Toyota Prius Toyota Prius

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Toyota Prius repairs by problem area

Engine (29%)

Transmission and Drivetrain (2%)

Brakes and Traction Control (9%)

Suspension and Steering (12%)

Electrical and Air Conditioning (36%)

Paint, Rust, Leaks, Rattles, and Trim (7%)

Other (6%)

Chart based on 2033 repairs.

Toyota Prius engine repair cost distribution

$2500+ (8%)

$1000 - $2499 (7%)

$500 - $999 (18%)

$100 - $499 (48%)

< $100 (18%)

Chart based on 354 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2015 Toyota Prius 4dr Hatch

98-horsepower 1.8L I4 Hybrid CVT FWD

8000 mi Engine check lightr oln due to a gas cap not fully seated 
16000 mi

US $90
Engine light came on again. Suspected leaky gas cap. No repair - just reset the computer 

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2014 Toyota Prius 4dr Hatch

98-horsepower 1.8L I4 Hybrid CVT FWD

32000 mi

US $225
Oil leak 
15300 mi Check engine light came on - the code said it was a loose gas cap - they checked for leaks and reset the code, no charge 
17500 mi Complete hybrid failure caused by some error code. Dealer cleared the code and the car drives perfect again. 
19000 mi Ever since the hybrid failure, MPG has topped out to 37-39 MPG. Dealer tested everything out and can't find anything wrong. This car gets NOWHERE NEAR the 48-51 EPA MPG. If I wanted 39 MPG, I would have bought a Ford Focus. 

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2013 Toyota Prius 4dr Hatch

98-horsepower 1.8L I4 Hybrid CVT FWD

6000 mi Making loud rattle noise/shake under hood on initial startup. Would go away after warmup. Toyota recommended having it towed to shop and sent tow truck. Dealer had car for 2 days. Has made same noise 1 time since. Replaced intake manifold. 

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2012 Toyota Prius

Engine not specified

41000 mi Water pump failure 

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2012 Toyota Prius 4dr Hatch

98-horsepower 1.8L I4 Plug-in Hybrid CVT FWD

41300 mi

US $875
Power management control unit, 12 volt battery 
55700 mi

US $600
Water pump failed for radiator 
9000 mi Plug In Hybrid making unusual knocking noise when under the moderate load to the engine. Dealers could not find the problem and deemed as normal operation. I had Regular Prius Hybrid (Not Plug In), and never had this issue before. 

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2012 Toyota Prius 4dr Hatch

98-horsepower 1.8L I4 Hybrid CVT FWD

37000 mi

US $58
Check engine light came on because of fuel tank vacuum leak. Techs tightened fuel cap and cleared alarm. 
48700 mi DC/DC converter also know inverter unit warranty repair 
36580 mi Replace EGR Fume smell when accelerating. 
32000 mi Timing cover oil leak. Seals were replaced. 

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2011 Toyota Prius 4dr Hatch

98-horsepower 1.8L I4 Hybrid CVT FWD

4000 mi Oil warning light directing me to take the car to the dealer where I bought it. 
20000 mi

US $700
Engine ran rough with a knocking noise on cold start. Found a TSB mentioning the problem and fix of replacing intake manifold. Shop couldn't reproduce the problem but fixed according to TSB 
5000 mi Rough start after cold soak per TSB 
8000 mi extremely retarded valve timing. replaced camshaft oil control valve 
21440 mi Accelerate and smell went into cabin-Not fixed. 
38160 mi Smell coming from engine bay. Fixed by replacing sponge at engine bay. 
40300 mi Timing chain knocking to engine body during cold start 
42780 mi Engine metal knocking during cold start. Replaced fuel injector and manifold. Problem still occured. Root cause was carbon deposit on fuel injector causing the morning cold start knocking. Needed special coated fuel injector. 
66000 mi

US $3500
Stone came through opening in front and damaged inverter cooling radiator. Coolant was lost and inverter failed and was ruined. Cost was covered by road hazard insurance Note: Prius has no grill work in front opening to catch stones 

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2010 Toyota Prius

Engine not specified

59000 mi The air regulator flap mnalfunctioned 

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2010 Toyota Prius 4dr Hatch

98-horsepower 1.8L I4 Hybrid CVT FWD

32700 mi Water pump Emissions valve 
17000 mi When engine started, it sounded like rocks were in it. Problem has been reported by other 2010 Prius owners (see youtube videos). 
66000 mi Complete system failure, every light lit up on dash, no regen braking. Dealer said they are replacing most of the braking system including master cylinder, etc. Have Toyota extended warranty, told it would cost over $4500 otherwise. 
75000 mi

US $20
Poor mileage, so replaced PCV valve. Valve is located under intake manifold, so replacement requires working above and below engine 
34720 mi oxygen and fuel / air sensor replaced 
3600 mi Piece of bottom shield came loose, was hanging down to the ground, attached at the front and hanging down behind - front right side, ~12 inches long, 4-5 inches wide. They resecured it with clips. 
80000 mi

US $168
Part of the splash shield broke due to a clip falling off at some point. They had to replace the front right fender (wheel well) lining. $120 parts and $40 labor. 
290000 mi

US $1700
Blown head gasket 
350000 mi

US $205
Engine overheat at high power only. Replaced Electric engine water pump. 
24000 mi Check engine light came on. Dealer installed software update. 
57040 mi Hybrid battery needed changing - was changed for free under extended guarentee 
53300 mi Hybrid system hesitation during extreme heat after parked for several hours (hot battery pack). Possible protection mode, but wanted to be sure. Dealer attempted reproduction, then told it was normal, and discouraged "battery mode use". 
70000 mi Hybrid system sluggish, not using battery power when battery hot. Battery gets hot easily. 
82000 mi Hybrid performance poor when battery is above 45C. Battery easily heats to or above this temp during normal use. Car sluggish in this state and has poor fuel economy. 
84000 mi Poor fuel economy when hybrid battery hot. Battery easily gets heated and takes a while to cool, partially due to heat soak, partially due to not cabin. 20% drop in FE. 
87000 mi Cylinder 3 misfire. Dealer cleared code and it did not come back on. Engine, battery and system checked out OK. 
109000 mi

US $72
Engine light flashed, car fails to start on occasion. Dealership found no code stored and no issue. 12V Battery tested ok. 
117000 mi

US $203
Replace oil pan gasket 
60760 mi Traction battery capacity was reduced significantly 
39000 mi Replace inverter 
48360 mi

C $180
Intake manifold replacement (vehicle failed to start in cold weather) 
52260 mi Hybrid system (check hybrid system error came on). Dealer could not localize problem. Possibilities included the battery fan and high humidity in the battery compartment. No repairs made and problem has not recurred. 
128000 mi Intelligent Power Module failure. 
147000 mi

US $850
Fuel problem. EGR valve clogged. No reason this car should have an EGR valve. 
80000 mi

US $70
Car sounds like a truck when starting up. Brought it to the dealer in Downey. Dealer refused to follow Toyota Service Bulletin explaining the problem. Told me it expired at end of April. So did NOTHING. 
126260 mi

C $130
P2A00 check engine code. Defective front oxygen sensor 89467-28090. Replaced it. Problem solved. 
82000 mi Replaced VVTI Gear for $2800 (Extended Warranty covered 100%). But noticed large amount of carbon deposits. My mileage has dropped to 32mpg from my previous average of 55-58. 
130700 mi

US $200
Hybrid battery died. $11k to repair. I was out of warranty but Toyota stepped up and paid all but 2900 of it as a courtesy gesture after I bitched to corp for a few days. 
90000 mi intake manifold changed under warranty 
65720 mi

C $1750
Started losing oil last August. Checked over, compression test to confirm. Put in new block. Freak thing and not normal at all. Probably should have changed oil more often than every 10000 km. 
56000 mi Motor mount replaced under T-SB-0204-11 to fix vibration. The new motor mount seems to have made things worse instead of better. 
85000 mi The new motor mount actually made the vibration a little worse, but never tried to get it fixed because the new mount was the fix. 
73700 mi REPLACED TIMING CHAIN TENSIONER O-RING, WHICH WAS BEGINNING TO SEEP OIL BELOW HEAD GASKET 
116700 mi Misfire, replaced spark plugs. 
147300 mi Oil consumption of 1.5qt every 5,000 miles. Toyota states it's not a problem until consumption is 1 qt every 1500 miles. With oil change intervals of 10,000 miles I see this as an issue. Toyota will not repair under extended warranty. 
101000 mi Transistors for power inverter burned out 
102300 mi

US $50
Broken spring inside the oil filter canister, I think. 
5000 mi My car failed its emission inspection. I took it to the dealer and was told I needed to drive it on at least 3 trips of at least 75 miles each to "reset" the computer. 
10000 mi I haven't actually taken it to be repaired yet; my impression is that the car jumps forward at times when I hit the brakes. It happens intermittently, not constantly. 
179000 mi

US $500
Engine set P003 code after rough start on cokd soak. Intake manifold and EGR gasket replaced per TSB. Asked for help on price due to TSB, declined due to miles on car. 
259000 mi

US $150
Timing chain tensioner oil seal failure. Replaced seal. 
96000 mi

US $350
Prius is burning oil. 1qt per 500 miles 
100000 mi Burning oil. 

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2009 Toyota Prius 4dr Hatch

76-horsepower 1.5L I4 Hybrid CVT FWD

101000 mi

US $382
replace inverter coolant pump 
60000 mi

US $16
Service engine light went on. A scan indicated that the number 4 cylinder was misfiring. Ordered a used ignition coil from eBay and that fixed the problem. Note that a new ignition coil goes for over $100 plus mechanic's labor cost. 
81300 mi

US $149
Replace timing cover gasket due to engine oil leak. Replace valve cover gasket due to engine oil leak. OCV Sensor broken. Replaced. 
119500 mi

US $75
p1121 code from ck egg. lite. Replaced flow control valve 
82300 mi

C $250
I had the check engine light go on, and when the dealership checked into it it was a stuck coolant fluid control valve. I basically paid $250-$300 for them to reset the code as they were replacing and flushing my coolant anyway. 
90000 mi

US $700
Water pump failed (not the hybrid electric one). Caused all kinds of mischief with the electrical system, had to be towed to the shop. 
136700 mi

US $100
Evidence of crankcase pressure - had PCV valve replaced as precaution. 
87000 mi

US $88
Coolant valve stuck shut, engine overheated causing service light to come on 
48000 mi

US $800
coolant control valve 
180000 mi Hybrid Cooling Pump recall hadn't been done; it left us stranded. Towed via AAA to nearest dealer and repaired at not cost. 
26000 mi Replaced the electric hybrid water pump. 
28000 mi The recirculating valve for the A/C unit (coolant side) opened slowly causing a check engine light. 
66000 mi Exhaust mounting bracket weld had broken. Local private Tyre and Exhaust company was able to improvise repair with metal clamp which worked perfectly. fixed free-of-charge. 
36700 mi inverter pump 
40000 mi

US $512
coolant flow control valve 

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2008 Toyota Prius 4dr Hatch

76-horsepower 1.5L I4 Hybrid CVT FWD

89000 mi

US $281
The traction battery failed and was replaced with a new battery. 
8680 mi Engine check light came on. Took vehicle to local dealer who determined via the code that there was a misfire problem. Cleared Engine Check light. Suggested we had picked up water in gas. Added 150ml TSP water eliminator. No further problem. 
53000 mi 3 Way coolant valve needed to be replaced. Was under warranty. 
80000 mi

US $294
Leaking main engine water pump 
24460 mi

C $216
I had a thermostat changed as I suspected it was sticking (via ScanGauge II water temp readings). Dealer software could not i.d. any trouble and was not recommending a change. I insisted and the new thermostat has cleared up the symptoms 
43400 mi Leaking water pump replaced under extended warranty 
52700 mi

US $100
Serpentine belt was cracked and replaced 
65000 mi

US $600
Battery was found to be inadequate when I took the car in due to a "check engine" light that turned out to be caused by a defective gas cap. 
100500 mi

US $120
Replace drive belt. 
63000 mi Cooling system 
62000 mi noticed the battery was not reaching full charge ... diagnostic was OK .. it was the heat .. we have a heat waze ( over 40) so the battery efficiency is reduced and will not charge as fully. Noticed improvments with cooler weather now. 
59000 mi

US $458
Water pump needed replacing 
150040 mi PCV Valve replaced to try to improve oil consumption. Didn't help. 
45000 mi water pump leaking coolant, replaced water pump and belt... 
24000 mi

US $300
Replaced leaking water pump. 
69500 mi Transmission drain and fill Replc Pcv valve 
121700 mi emission check engine p0456 
123000 mi replace fuel tank failed emmision test 
192000 mi

US $250
Car was losing 2 quarts oil between regular maintenance (5,000 miles) PCV valve was replaced. Have not yet taken car back to dealer for oil consumption test. Update: problem persists. 
250000 mi Check engine light came on. Service dept. put it on the computer and 2 codes came up, 1. was the catalytic converter and 2: was a problem possibly with the gas cap. No definitive fix was given but an $1800.00 price was given for the repa. 
260500 mi

US $943
Replace catalytic converter. 
277000 mi

US $500
Replace hybrid cooling system 
102000 mi

US $145
The dealer technician noticed cracking in the drive belt. They replaced the drive belt with no problems. No problems since. 
83000 mi

US $58
Kept getting red emergency triangle light in dashboard and " problem " across screen of brain unit before brain unit stopped working. After brain unit was replaced warning idiot light conditions still lit up intermittent. Found low oil. 
94500 mi Have had an intermittent check engine light for the past year. Dealer could never find anything. I eventually found it was very low on oil. Seems to be burning it. Not happy that dealer didn't discover the problem one of the times I took it in. 
102500 mi

US $472
Check Engine light. First visit #2 cylinder problem. Change plugs, clean injectors. Mechanic also recommended cracked serpentine belt and possible water pump leakage. I okayed replace serpentine belt. 
103000 mi

US $487
30 days and 500 miles after repair on 4/01/2016 the same condition again on 5/07/16. Check engine light. Dealer found bad injector cylinder # 2 again. Replaced faulty injector. Now problem is corrected . 
130000 mi Needed catyltic convertor, new tires and was losing oil 
71000 mi

US $600
Diverter valve in coolant system was not closing. Check engine light on. Fixed with valve replacement. 
96000 mi

US $340
Water pump was leaking, had a new after market water pump installed. 
187000 mi

US $478
Running exceedingly rough. Had to replace spark plugs & other electronic parts. Wanted to replace brakes, but decided not to at this time. 
350000 mi

US $4500
Engine was using oil, about a quart every two weeks, and had to be replaced with a used engine. 
60000 mi

US $30
running a little rough at idle 
28520 mi Leak in water pump discovered during routine maintenance. Replacement covered by warranty. 
100000 mi

US $250
Water pump replaced as it was beginning to leak. Cost of about 250 
115500 mi

US $5
Cleaned throttle body and air filter. Added dry gas to fuel tank 
83000 mi Oil change, engine and cabin air filters replaced, radiator cap replaced due to signs of leakage 
115500 mi

US $100
Lag in response, cleaned dirty throttle body. 
45000 mi replaced water pump 
94000 mi

US $185
Leak in fuel pump 
40000 mi Replaced water pump. 
50000 mi Notice a slight misfire when coming to a stop. WAs not reproducible at shop and no codes stored in current flow but cylinder misfire was in history. Throttle cleaned. 
79000 mi

US $600
Hybrid system water pump 
84000 mi

US $60
Resonator pipe broke from catalytic converter 
88000 mi

US $600
Leaky water pump and worn timing belt replaced. Car happened to be in the shop for a replacement accessory battery. 
83000 mi

US $120
Thermostat on coolant pump that pumps hot coolant to a thermos tank next to the engine failed and had to be replaced. 
60000 mi

US $700
Water pump leak at the housing. Replaced pump, gaskets and coolant Replaced accessory drive belt that was worn and frayed. 
32000 mi Cruise control was activated at 65mph on a rainy day on the highway and a car cut me off. I braked to override the cruise control. Instead of disengaging, the car sped up. I piled on top of the brake and changed lanes. Called Toyota and they blew me off. 
154000 mi Replaced inverter cooling pump under recall 
53000 mi

US $500
Water pump also identified as needing replacement on this trip. 
55000 mi P1121 code - known frequent problem with Priuses of this vintage; eventually got manufacturer to pay for full replacement of coolant flow control valve! 
76000 mi Engine Air Flow Sensor Failed - Check Engine - Computer kept shutting down engine - Had to tow to not wear down hybrid battery 
167000 mi

US $350
Coolant flow sensor for inverter - replaced sensor and valve 
210000 mi

US $250
Inverter coolant pump failed and was replaced 
310000 mi

US $770
Hybrid Coolant Pump Failure 
34000 mi Can't completely fill up the gas tank. They told me the gas tank has a bladder in it and probably because of it being so cold it won't fill up all the way. I should wait and see if it gets better when it warms up outside. 
91000 mi

US $150
Exhaust heat shield rusted and needed to be replaced 
77000 mi Catalytic Converter Failed at 77,400 mi. Normal Car warranty expired however dealer replaced at no cost with a new one using the federal emissions warranty which covers this repair for vehicles under 80,000 mi 
79300 mi Water Pump leaking - replaced water pump 
44000 mi Engine water pump and hybrid water pump and battery 
103000 mi

US $400
Replaced engine coolant pump 
49700 mi

US $166
Odd symptoms intermittent, happened only twice with my wife driving - engine revs up when removing foot for accelerator at 55 mph to slow down for stop light. Service Advisor recommended Injector Flush & Induction Service 79.95 each. Not fixed. 
90000 mi

US $750
Carbon buildup on engine intake has to be cleaned. 
99000 mi

US $2400
Failed catalytic converter had to be replaced. 

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2007 Toyota Prius 4dr Hatch

76-horsepower 1.5L I4 Hybrid CVT FWD

101000 mi

US $400
water pump leak 
84160 mi Leaking engine water pump replaced under extended warranty while performing 135000 km service. 
56000 mi

US $250
Water pump leaking; replaced 
67000 mi Water pump leaking - replaced on extended warranty 
116847 mi

US $492
Replaced leaking water pump (W/coolant) and drive belt. 
128000 mi Hybrid Traction Battery replaced. Received P0A80 error on Tuesday, Aug. 13, 2013. Drove to Poway Toyota. Battery replaced under warranty (150k mi) 
71300 mi

US $620
The pump for the inverter needed replacing. 
61360 mi

A $300
Engine water pump failed, got replaced with genuine part, repaired by a certified independent mechanic. 
138220 mi

A $991
Replaced hybrid battery with a reconditioned one. 
107000 mi

US $2000
The hybrid battery went out. We bought another one from Napa and installed it ourselves. 
83700 mi

US $450
Coolant control valve stuck 
145000 mi

US $5
Hole in exhaust, at a spot difficult to get to. Attempted to seal, repair failed after one week. Now living with a noisy Prius. 
145000 mi Car refuses to run more than ~10 seconds. Multiple error codes suggesting issue with throttle control. Have attempted to take apart throttle control, difficult and complex to diagnose. Car is currently broken awaiting more of my free time 
128000 mi Replaced hybrid battery due to premature failure. 
115000 mi hybrid battery was replaced under warrenty 
165000 mi

US $1300
serpentine belt, pulley replaced 
101000 mi

US $291
Mass airflow sensor showed error code, part replaced. 
113000 mi

US $750
Hybrid system water pump and valve were seen to need replacement during a routine service. Parts were replaced. 
157300 mi

US $150
Unusual engine oil consumption in the past several months. Engine sludge was suspect and engine was flushed with special detergent. The oil consumption drastically reduced after this engine flush. 
162300 mi

US $90
Traction pack failure. I just replaced two individual cells in the pack, did the work myself, overall cost to fix was $90 and about 5 hours of time. 
116000 mi

US $2100
Hybrid Battery Failed 
150300 mi

US $1700
Replaced hybrid traction battery 
137000 mi The Hybrid battery was bad. 
185000 mi

US $300
Clean mass air flow sensor and throttle body. These issues were causing check engine light. 
126000 mi

US $4000
Had to have Prius hybrid battery replaced 
134700 mi Codes p1121and p1116 set check engine light, and failed smog test. ONLY because I had a documented smog test failure, this was covered under the prius 15 year, 150,000 mile warranty. It was a sticking coolant control valve. 
205000 mi

US $1
DTCs p1116 & p1121. Replaced coolant flow valve & mech. water pump. 
215300 mi

US $400
Radiator replacement with new coolant. Radiator developed pin-holes and was leaking Water pump replaced - leaking from shaft 
133000 mi

US $570
Failed relay from high voltage battery 
37000 mi

US $28
Heat shields on exhaust system became loose causing a very annoying clanking noise when motor was running. New bolts were used to tighten heat shields. No more noise. 
48000 mi check engine light on. mechanic stated it was related to the emissions control system. Mechanic suggested I do not try to repair problem as repair work would probably cause rusted parts to break off causing more repair work. No charge. 
61000 mi

US $956
Dash light indicating need to take car in for service. Service indicated the cooling pump needed replacement and water pump had leak and should be repaired. Had both repaired. 
101000 mi

US $900
replace manual water pump, evaluate transmission problem (none found). Drain and refill invertor coolant. Replace cabin air filter. 
111000 mi

US $3450
Replaced hybrid battery 
112000 mi

US $450
Involved coolant control valve which had to be replaced 
146000 mi

US $3050
Problem with hybrid battery. I was told 3 out of 20 cells degraded, and the battery needs replacement. I am disappointed with 1 year Toyota warranty for hybrid battery. 12V auxillary battery has 7 years limited warranty at the same time. 
99000 mi

US $150
Replaced cracking drive belt. Pretty good I think to have gotten 100k on original one! 
56000 mi hybrid battery replaced under warranty 
73700 mi

US $962
Power inverter coolant pump valve 
254300 mi

US $5000
Bent valve rod. Dealer recommends replacing vehicle. A new engine is recommended. Repairs not economically feasible. 
255000 mi

US $4335
Original engine died at 254500. Replaced engine with used engine (52000 miles).  Replaced entire exhaust system at the same time. 
289000 mi

US $450
Water pump leaking and heater hose leaking. Replaced both. 
302000 mi Engine light on. Water temp sensor bad. 
144000 mi

US $500
Said I needed water pump although I have never lost any coolant. 
41700 mi

US $500
Coolant control valve Drive belt replacement recommended by dealer 
109000 mi

US $345
Hybrid water pump needed to be replaced. 
127000 mi

US $373
MPG falling. Diagnostic. performed. Trans. fluid changed, spark plugs and air filter replaced. 
87000 mi Main drive battery went out, but still had 12,000 miles of warranty left so it was free of charge. Wait time was due to the main drive battery was on back order. 
96000 mi water pump cracked, needed replaced 
66500 mi

US $40
Cylinder 2 was misfiring occasionally at idle. I determined the problem was fueling rather than ignition and replaced injector. 
263300 mi P0420 code, perhaps because it is burning 500-700 ml per 1000 miles 
277000 mi

US $182
Replaced catalytic converter to clear p0420 code. Fuel economy and power are back and engine light is gone! 
137000 mi

US $55
Hybrid battery failure. Trouble code P0A80 This is the one all Prius owners fear. However, I ordered a couple battery modules from Ebay and did the repair myself. That was 24 days ago and it is still running smooth. 
181000 mi

US $500
Had to replace the "inverter cooling pump" (?). Was explained this part controls cooling for both the regular and hybrid engines. Check engine light came on then dealer attached a computer to find the code. 
83000 mi

US $265
Replaced worn serpentine belt. 
85000 mi

US $400
Replaced leaking water pump 
30000 mi

US $300
needed new water pump 
17000 mi Electric motor in Hybrid system seems weak. Less resistance than when new, lower gas mileage than when new. 
58000 mi HV Battery (High Voltage) replaced due to one block with one volt low. Toyota process required multiple trips to the dealer over a few weeks while driving with the check engine light on to confirm and repair the battery pack failure. 
63000 mi

US $60
Working on the brakes to sand glaze off of the pads and rotors (showed almost no use after 60K miles), I spun the wheels off ground. The computer went nuts and gave all the brake warning lights. Dealer was kind and reset the computer for $60. 
5000 mi Car died. Towed to dealer. They said originally battery defective under warranty plus bad fusible link. Later said inverter bad therefore nothing covered under warranty. Want $5500 plus tax to repair. Asked why no warranty. Answer nothing defective. 
5000 mi

US $3400
Car died. Battery determined defective. Also found a fuse and inverter bad. Only battery and tow covered under warranty. Owner paid the rest. 
26000 mi Coolant pump sounding noisy. Replaced pump under warranty. 
71000 mi Clunking noise from front. Service manager found a service bulletin about the issue. He ordered motor mount. I went back in a bout a week and they installed the motor mount, 3 hours. 
94000 mi

US $968
Replaced gas engine water pump and coolant control valve. Cell in hybrid battery failed at 93000 miles. Dealer replaced the hybrid battery assembly under warranty. 
104000 mi Hybrid water pump replaced under TSB. Check Engine light on, and high engine temperature was noted. Engine could have overheated withput proper repair. Air bubble at h20 pump caused lack of coolent circulation. 
30380 mi

C $105
Defective sensor. Leaking water pump. Install sensor. Install water pump. 
68000 mi

US $200
Engine light came on, faulty catalytic converter repaired and covered under original emissions warranty. 
54700 mi

US $500
found internal combustion engine pump was leaking, replaced both pumps. 
32000 mi Battery died out due to low voltage problem, (multiple codes in system). Dealer called Southeast Toyota (SET) who advised Dealer to replace Inverter Assembly. After replacement, problem was solved. 
116000 mi Oil pan replaced by dealer who sold the car to me at their cost as part of car sale. 
41000 mi

US $37
Noisy electric cooling pump replaced under warranty. TSB exists and was ordered done.  
42000 mi Possible small leak in water pump discovered during oil change. Warranty fully covered repair. 
45000 mi The water pump that operates after the car is turned off to pump coolant into an insulated tank had a bad bearing. Common failure, apparently. About 4 hours of labor, but under warranty. 
41000 mi Northridge Toyota claims coolant pump is making a funny noise after vehicle shutdown. Independent research confirms this is normal for the Prius. Decided to get a second opinion at a different dealer with next service. I don't trust Northridge Toyota. 
46000 mi Had coolant pump that Northridge Toyota said was a problem checked out at North Hollywood Toyota. They could not identify any issues - as I had expected. 
75700 mi Was told hybrid system water pump was leaking. They replaced it but it started making sloshing noises immediately upon driving out of the dealership so took it back and they bled the system (again supposedly) which fixed . 
75000 mi

US $120
Water pump on IC engine was leaking and needed to be replaced. 

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2006 Toyota Prius

Engine not specified

62000 mi

US $400
Computer died this time battery car would not shut off transmission kept shifting in neutral while driving all dash lights came on car would not start or shift water pump leaking replaced battery had no brakes! 
46000 mi CEL came on, Toyota replaced a sensor under extended warranty (some sensor related to the cooling system).  

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2006 Toyota Prius 4dr Hatch

76-horsepower 1.5L I4 Hybrid CVT FWD

68000 mi

US $50
Replace leaking water pump 
69000 mi Water pump leakage identified during oil change and lube 
101000 mi

US $940
Three way valve in coolant system was stuck. Also, water pump had minor leak. Both were replaced 
50500 mi

US $50
water pump seepage fix and recall work related to acceleration fix (shortening the pedal) 
135000 mi

US $350
Water pump leaking coolant, discovered while replacing serpentine belt. Pump replaced. 
167500 mi

US $3900
Traction battery failing. Red triangle and check engine illuminated, could not accelerate to high speeds. Hybrid battery replaced. 
79000 mi Hybrid traction battery failure 
119000 mi

US $114
Inverter coolant pump faulty per Toyota TSB/recall. Throwing up error messages on the dashboard and about to fail completely. Parts replaced under warranty. 
128700 mi

US $140
Serpentine belt replacement. Made noise, dealer said it was fraying. 
203000 mi

US $2500
Hybrid Battery died 
224000 mi

US $129
Replaced 3 cells in the traction battery and completed a discharge/ charge "refresh" on all cells and tracked initial voltage, internal resistance and final voltage 
85700 mi Main hybrid battery pack failed. 
113000 mi

US $500
Coolant sensor triggered "check engine" light; replaced 
45000 mi

US $135
While in for Oil, Filter, and wheel alignment the technician discovered that the water pump was leaking which also affected several belts. The water pump and belts were replaced under warranty. 
59000 mi water pump was leaking causing a loss of coolant. Car was flatbed towed to dealer for repair. 
215500 mi

US $2300
Was burning oil; about 1 qt/350 miles. Replaced engine. 
165000 mi Still a problem. Weird pattern of warning lights including at times the CEL Car still runs just fine but there is a question as to what systems are working correctly. Will report more as this story unfolds. 
180000 mi

US $40
Car suddenly started to misfire. Check engine light flashed at first then became steady. No problems previously at all. Turned out to be worn spark plugs. I have never known plugs to fail suddenly. 
89000 mi

US $900
Cracked radiator, leaking water. Water pump, etc repaired/replaced. 
124000 mi Hybrid battery failed and was replaced under warranty 
185000 mi

US $3665
Replaced high voltage hybrid battery. 
195000 mi

US $125
Replaced spark plugs at 65,000 miles. One was found to be defective. 
35000 mi

US $450
CEL on w/ many codes-most caused by aftermarket installation. Xtra time taken for repair to isolate & repair real problem-dirty sensor. 
156000 mi

US $1497
Water pump was leaking 
172000 mi

US $1945
Hybrid battery pac needed to be replaced 
190000 mi

US $150
Hybrid battery replacement from February 2015. Failed and was replaced under warranty 
25000 mi

US $887
Clean Throttle Plate Replace Water Pump Replace Belts 
88300 mi

US $250
water pump seal was leaking and was replaced 
91216 mi

US $319
Water Pump was leaking identified on previous periodic maintenance check. REplaced pump and belt 
106398 mi

US $454
Replaced the engine coolant control valve sensor and coolant. 
186000 mi

US $2800
Broken rod in engine, presumably due to wear. Entire engine was replaced with used engine (68K) as it was much more expensive to rebuild. 
10000 mi vehicle lost power on hwy 680 nothing was done by toyota to fix this 
32000 mi Mechanic found that the water pump was leaking and replaced it on warrantee. 
30000 mi

US $115
I went in for 30k maintenance and also for squeaky coolant pump under TSB 0087-08, and also a squeaky rear window. They could not replicate either of my problems, and nothing was fixed. I was very disappointed and angry with them for not fixing anything 
35000 mi squealing noise coming from coolant pump. replaced under TSB 0087-08 
41000 mi Slow (at the time of repair) coolant leak at the water pump. Water pump replaced under warranty and the leak was fixed. 
130000 mi

US $3300
Hybrid battery needed replacement. Dealer tried charging me 4400 even though two other dealers had lower quote. Dealer did not lower price until I actually sent a tow to tow it somewhere else! This is even after I talked to manager! 
36000 mi Inverter pump failed. 
60000 mi Noisy thermos water pump. 
110300 mi

US $200
Replace muffler - can rusted through, no longer attached to pipe towards resonator. 
150000 mi

US $60
Slow coolant weeping from internal combustion engine water pump, replaced with OEM (Aisin) part from Amazon plus a gallon of Valvoline Asian Car 50/50 coolant. 
5000 mi

US $50
Tire press. light came on while driving, stopped and put air in and tried to reset but the light did not go off. More user error- I didn't hold the set button down long enough and they put in a little more air. 
85000 mi

US $470
Water pump was just starting to leak 
120000 mi

US $500
Water pump replacement 
36000 mi Coolant transfer pump made high pitched whine on start-up and shut-down, especially in cold weather. Pump replaced under warranty. 
121000 mi

US $315
Weeping engine coolant pump replaced. 
135000 mi

US $850
Replaced HV battery due to reduced battery capacity resulting in poor climbing performance. 
90000 mi

US $450
Leaking water pump was replaced by dealer. Requested new serpentine belt since old one had 88,250 on it and there would be no additional labor charge. 
52000 mi Inverter coolant pump replaced under powertrain TSB warranty 
137000 mi

US $400
Hybrid battery failure. Rebuild a spare and replaced. 
61000 mi Dealer reported leak @ water pump while trouble shooting an open circuit in air bag system. Decided to have local Goodyear dealer install. Do not trust, repeat - do not trust Toyota dealer where we purchased our Prius. 
85000 mi

US $330
Needed new H20 pump. 
142000 mi

US $100
Replaced idler pulley. 
198700 mi

US $1000
Hybrid battery failed. 
120000 mi

US $650
Engine water pump was leaking. Had it replaced. 
51000 mi Hybrid inverter pump broke. 
117700 mi

US $978
Two cells of the HV battery were not working and all dash lights came on quite unexpectedly. Diagnosis by dealer confirmed HV battery needed to be replaced. Dealer replaced the HV battery and two cables. Toyota covered 70%; I paid 30%. 
108160 mi

R 90
I took my car to Toyota and they pulled a P3110 "IGCT Relay Malfunction" and a B2799 "Immobilizer Malfunction" code. They reset, checked and cleared everything and the error hadn't occurred since. Cost me $90. 
123380 mi

R 100
Leaking engine water pump (not the inverter).Replaced along with new V belt 
163060 mi

R 2500
Main traction battery failed 
110000 mi The main hybrid battery failed. Replaced under 150k warranty. 
179300 mi

US $717
New muffler 
153000 mi

US $1900
Hybrid Battery 
186620 mi

C $100
Changed coupling between muffler and exhaust system (donut) 
109000 mi

US $1800
Replaced traction battery at 106,000 miles, in March. Used rebuilt battery. I had a surging when first started for the first 5-10 minutes when parked in the direct sun, in very hot weather for 4 years. Trouble code 3-14. New battery eliminated problem. 
43000 mi Inverter pump was starting to make a lot of noise at shut down. While my car was being serviced for the recall, I mentioned the problem to the dealership, and there was a tsb out on the problem. They replaced the pump quickly and well. 
76000 mi

US $340
Coolant Water Pump was replaced as it was weaping coolant. 
100000 mi Hybrid battery defective. Battery was on back order and took over 6 weeks to arrive at dealership 
145000 mi

US $4200
Hybrid battery failure 
162000 mi

US $710
Water pump, $480 
56000 mi Prius stopped running, but limped to dealership. Main battery and several other items replaced. Cost not disclosed. 
58000 mi To diagnose low gas mileage; reported to be result of higher ethanol levels & not a problem with car; skeptical. 
137000 mi

US $200
belt replacement required 

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2006 Toyota Prius 4-door

4-cylinder hybrid CVT 2WD

41000 mi Noisy coolant recirculating pump. Installed parts. 

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2005 Toyota Prius

Engine not specified

41000 mi Second oxygen sensor replaced under our extended warranty (aka prepaid service agreement) 

Return to top

2005 Toyota Prius 4dr Hatch

76-horsepower 1.5L I4 Hybrid CVT FWD

158700 mi

US $3000
Mass airflow sensor needed to be cleaned or replaced 
160000 mi

US $500
Exhaust needed replacement 
60000 mi water pump leak, caught by mechanic during routine service for oil change, etc. Water pump replaced under warranty (2 weeks before end of 5 year warranty). 
78000 mi Mysterious rattle/clunk in front end when going slowly over washboard road or RR track. Shop proposed an engine mount TSB that is a) not important, and b) $400, so I'm ignoring it for now. Also, I don't think it's an engine mount problem. 
101300 mi

US $447
Replaced inverter water pump. Also recall C0T - Steering shaft. 
210000 mi

US $110
Hybrid battery pack issue 
26000 mi Traded car with broken transmission coolant pump drive. Dealer performed repair after trade. 
207000 mi

US $80
Got the red triangle of doom. ECU gave an HV battery code. Checked and one pair (block) was 1V low. Bought used pair for 80 and swapped them in. Going slow repair is 5+ hours, going fast it can be done in under 3. 
73000 mi

US $307
Check Engine light went on. Oxygen sensor was replaced. Check Engine light went off. 
114000 mi

US $2900
Dealer said car was due for drive belt replacement, likely original, over 110,000 miles at that point. 
115000 mi

US $1005
The hybrid traction battery failed. Initial estimate to repair was $5300. I called Toyota and a different dealer who was honest about the battery core charge, etc.. Toyota kicked in about $1950 towards the repair. 
139300 mi Replaced hybrid battery pack under warranty 
62000 mi

US $130
Inverter water pump failed and had to be replaced - although car is out of warranty, manufacturer paid for all but $130 of repair cost and provided free loaner vehicle 
116000 mi Hybrid battery failure 
186000 mi

US $35
Burning some oil...had the engine cleaned 
98000 mi Engine water pump weeping coolant- was replaced. 
64000 mi The engine coolant valve needed replacement and was replaced under warranty. 
100000 mi

US $400
Some kind of water pump was leaking. Had to do with the engine. Also had 2 recall items performed, which was how the issue was discovered. 
31862 mi

US $2516
Exhaust mangled by road hazard. Replaced exhaust pipe assy FP# 17410-21500 plus 2 gaskets. Replaced all 4 tires Oil change/filter/fluids 
77392 mi

US $50
Hybrid inverter cooling pump failed. Dealer replaced (waited 1 week due to backorder) under Extn. Warr. Also request coolant storage pump replace (TSB-0087-08) due to loud squealing after shutoff. Dealer could not replicate/no repair 
93000 mi

€275
Second oxygen sensor caused error P0138 the MIL turned on. 
139000 mi

US $80
hybrid main battery failure 
168000 mi

US $580
Engine water pump had a slight leak, so it was replaced along with the thermostat (preventative). 
78000 mi inverter water pump failed. 
120300 mi

US $200
HV Battery at 40%. Deep cycled 3x. 
61000 mi

US $1000
Replaced Engine Seal. HV Water Pump Recall. Replaced Leaking Water Pump and cracked Belt. 
128000 mi

US $80
a piece of the exhaust pipe was replaced. 
163000 mi

US $38
One of the 28 cells in the hybrid HV battery went bad I bought a new one for $37.50 on Ebay and did the repairs myself. Fairly easy fix. 
77000 mi

US $3879
Hybrid battery failed and needs to be replaced. Will trade car instead. 
109300 mi

US $200
Electric coolant recovery pump was making noise so I replaced it. 
170000 mi

US $240
Rusted exhaust pipe replaced 
100000 mi Oxygen sensor in exhaust required replacement. The error message recurred twenty minutes after leaving the garage. When re-examined the garage thinks it is due to using a non-standard catalytic converter. Too expensive for minor benefit. 
103300 mi Leaking water pump required replacement 
108000 mi

£50
VSC and Regenerative Braking warning lights on. Hybrid battery low charge only abnormality found by workshop. Recharging hybrid battery cured warning lights. 
85000 mi

US $240
Thermostat replacement. 
98000 mi

US $250
Dealer replaced one of the two water pumps on a recall and said the other was leaking, and not covered, so we took it to our regular mechanic and he replaced the second pump. 
93000 mi Warranty/Service Campaign replacement of the inverter electric cooling pump. 
102000 mi Replace cat converter...what a drag and big bucks!!! 
200000 mi replaced water pump 
137000 mi Engine doesn't run; can drive a few more miles on the battery. Throws codes 3190, 3191, and 3193. CEL and large triangle with ! inside lights up on dash. After sitting 30-40 minutes, car drives normally again. 
162700 mi

US $800
P3190 and P3191. Replaced fuel tank assembly (includes fuel pump). 
237460 mi

C $200
Coolant Diverter Valve replaced. 
267820 mi Engine Water pump replaced 
289200 mi

C $280
Began losing coolant. one dealer diagnosed as faulty replacement ICE water pump and replaced at no charge (They had already replaced pump 8 months earlier. Coolant loss continued so I took it to another dealer who diagnosed faulty rad cap. Second dealer diagnosed and replaced faulty rad cap. Cost $130, No problem since. 
296360 mi

C $5430
Continued coolant loss eventually diagnosed as cracked engine block. Replaced the gasoline engine. 
283000 mi

US $5
~1" through-hole in the exhaust pipe between rear flange and muffler. Welded a piece of pipe in to patch the hole. 
41400 mi

US $756
Two of the four coil packs failed and required replacement of all four spark plugs + two coil packs. The car was out of service for two days. 
42628 mi

US $870
flush fuel injectors;replace 2 front tires; alignment; oil change; replace air cleaner and cabin filters; spark plugs 
61829 mi

US $461
Coolant flow control valve replaced 
190000 mi Driving and car died. Towed home and researched on internet that electric inverter coolant pump for hybrid engine was the cause. Replaced fuse and pump and car was good. Got recall 1 month later and sent Toyota my receipts and refunded $. 
163000 mi hybrid system inverter pump was replaced under campaign warranty. 
321300 mi

US $305
waterpump leaking coolant / pump and gasket replaced warning light was on / system failed test. Catalytic converter replaced. 
340000 mi

US $1878
Hybrid battery fail / replaced with used battery with 1 year warranty. part $1387.50 and labor $212.50 
349300 mi

US $394
radiator failed / replaced with used part $200.00 labor $157.50 
358000 mi

US $1384
5 months with the used hybrid battery it failed. It was on a 1 year warranty so the same shop installed (by my choice) a brand new Factory Battery deducting the price of the used one including labor. Has Factory warranty. 
61000 mi

US $120
Coolant control valve failed. Part of Emissions system. Required replacement to pass State Inspection. Code P1121. 
69000 mi

US $300
water pump and belt replaced 
133000 mi

US $500
Hybrid battery cooling fan failure; short in remote wires. 
41540 mi

C $706
Replace water pump (I think it was leaking). done under warranty !! 
110000 mi hybrid battery needed to be replaced. Toyota has extended battery warranty to 150k miles. 
79000 mi

US $430
Water pump for gas engine was leaking. 
146000 mi

US $400
The coolant valve was stuck and had to be replaced. 
126000 mi

US $220
Water pump and V belt replaced 
134000 mi

US $200
The check engine light came on and local Toyota dealer quoted $450 to $500. I ordered the coolant valve position sensor online for $80 and neighbor/friend installed for $100.00--all better now! 
114300 mi

£60
Pipe separated from flange due to corrosion/wear. Repaired by welding. 
112000 mi

US $350
Replaced leaking water pump and replaced engine coolant 
124300 mi

US $395
thermostat for hybrid cooling system replaced 
136000 mi

US $3200
Inverter for the power brakes had to be replaced. 
217000 mi

US $1800
Catalytic converter 
50000 mi

US $400
Valve in hybrid cooling system triggered P1121 CEL. Replaced by dealer at same time hybrid cooling pump recall service done for additional charge. 
57000 mi Coolant transfer pump was squeaking in cooler temperatures, replaced under warranty. 
205000 mi

US $120
Gasoline engine water pump noisy. Replaced the water pump 
246500 mi

US $200
Module in the hybrid battery failed. Replaced four modules and reinstalled the HV battery. Is functioning adequately for now. No idea how long this repair will last, could be months or years from now. 
149000 mi

US $2300
Hybrid battery needed replacement. 
153000 mi

US $400
Water pump (for ICE) needed replacement 
198000 mi

US $600
One of the cells in the rebuilt hybrid battery failed. A replacement cell cost only about $40. However,the labor to remove the bad cell and replace it, cost about $560. 
63000 mi

US $498
Grinding type noise noted when gas engine engaged. 
270000 mi

US $1300
HV battery died @ 268K. Replaced with warranted reman unit. 
133300 mi

US $153
Replaced serpentine belt. 
85000 mi

US $639
The inverter water pump was replaced. I have listed this under "electrical repair" because I understand that this pump cools the AC to DC mechanism. 
124000 mi

US $130
The triangular warning light was coming on intermittrntly. At the last lube and oil, it needed oil, for the first time ever. The PCV valve was replaced, no additional oil was needed at the most recent l&o and the light has not come on since 

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2005 Toyota Prius 4-door

4-cylinder automatic 2WD

193000 mi

US $2600
Replaced the hybrid traction battery ourselves. 
150000 mi

US $350
water pump valve needed to be replaced 

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2004 Toyota Prius

Engine not specified

129000 mi

US $453
Failure of the Inverter pump 

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2004 Toyota Prius 4dr Hatch

76-horsepower 1.5L I4 Hybrid CVT FWD

45000 mi Inverter Water Pump. Car not driveable. Parts had to be ordered. Took 2 days for parts to arrive and 1 day to install. 
106000 mi

US $400
Gas engine water pump was considered leaking by the dealer. Not noticed by owner. 
110700 mi

US $346
Water pump and thermostat had to be replaced 
20000 mi warranty software upgrade possible recall 
127000 mi

US $360
Ice was making more noise than usual, mentioned it when getting scheduled oil change, mechanic said bearings were going out on the water pump, replaced the belt as well. Purrs like a kitten now. 
56000 mi

US $600
water pump for electric motor failed 
110700 mi

US $545
P1121 code, changed coolant valve and also replaced gas hose and gas cap also replaced gas hose and gas cap 
112000 mi

US $239
Repaired in June. Car died on road. Wichita Toyota dealership replaced a fuse to repair,charged $240 service advisor lied as to which fuse I later found out. Replaced faulty cooling pump myself. 
85000 mi

US $500
Replace water pump. 
264000 mi

US $500
POA280 code. Replaced hybrid drive battery with one from a wreck. 
173000 mi

US $200
The traction battery went bad. I got a new battery from a 2007 Prius with 26k miles from a junk yard. The battery was 400 and Toyota gave me 150 back for the old battery. I will also sell the battery ECU for maybe 50. 
90300 mi Inverter pump failed, replaced under extended warranty. 
6262 mi Technical service bulletin. Replaced fuel filler tube. Reprogrammed ECU. 
7210 mi Check engine light on. Fixed leak in fuel evaporation canister. 
57040 mi

C $44
Check engine code P0138 post-catalytic converter O2 sensor. Part ordered. 
58900 mi

C $400
Dealer replaced O2 sensor, but check engine light still came on. I then purchased a ScanGauge for $170 to clear and diagnose the problem. 
61380 mi

C $366
Check Engine light P0031 fixed by replacing air-fuel ratio sensor. I purchased the replacement sensor over the Internet since dealer price was high. 
116560 mi

C $730
Replaced oxygen and air/fuel sensors to clear check engine light.  Also replaced a leaking exhaust gasket. Dealer also replaced inverter cooling pump at no cost (recall). Replaced brake fluid (maintenance item). 
140720 mi

C $350
Replaced stainless steel muffler since it had developed a hole. 
82000 mi Many warning light Coolant pump failure. 
22673 mi Dash warning lights on. Codes P0A60, P0A63, P0A72, P0A75, P0A7A, P0A78, P3212, P3222. Coolant leaking inside Inverter housing. Replaced Inverter. (Possible indication of MFD issues with that many codes?) 
44044 mi

US $422
Check engine and dash warning lights on. Codes for Inverter cooling system, high voltage ECU, and ABS-TRAC system. Repaired frayed wire to Inverter cooling pump. (Possible packrat damage or more evidence of intermittent MFD problems?) 
44121 mi Check engine light on. Error code P043A. Replaced water pump assembly. 
71000 mi

US $380
Had to replace cooling system for hybrid system. Inverter I believe they called it. Later recalled and reimbursed. 
101000 mi

US $400
Replaced inverter coolant pump 
123000 mi

US $300
Water pump early stages of failure (noise, binding, leaking). Replaced water pump and engine coolant. Also replaced water pump belt, spark plugs, PCV, oil/filter, air filter, and rotated tires. 
126000 mi

US $350
Hybrid Inverter Coolant Pump Failure (DTC P0A93). 2nd failure (first in June, 2008). Managed to limp home, then to dealer. 
130000 mi

US $450
Water pump replaced. Impellor bearing bad 
66000 mi

US $700
Water pump (main) was 'crusted over'. 
131000 mi

US $650
One of the water pumps (not under warranty) failed. This resulting in an overheating warning popping up on the car screen. Water pump was replaced. 
196000 mi

US $2000
HV battery failed at 194k miles. High RPM when accelerating. SOC fluctuated rapidly. MPG OK. Later the dashboard lit up - P0A80 code. ReInVolt (NC) supplied a refurbished battery for $1600 to my Dealer (CT) who installed it for $400. 
280000 mi

US $300
Rear Muffler - Hole in exhaust pipe 
76000 mi

US $176
Original water pump was leaking, so replaced water pump. 
110000 mi Inverter coolant pump failed. Dealer replaced the pump at no charge due to Toyota Limited Service Campaign for Inverter Coolant Pump. 
117000 mi

US $500
Replace faulty inverter coolant pump for main battery recharge system. P0A93 computer code. 
118000 mi

US $275
Hybrid Battery cooler pump failed. 
159000 mi

US $685
Hybrid (traction) battery replaced with one from 2007 wreck with 67000 miles. 
226000 mi

US $320
Pinging during half throttle going up hills. Throttle body and intake had carbon that may have been affecting fuel mixture. Components cleaned. 
272000 mi

US $85
Low engine power DTC, caused by a loose battery ground connection. Faulty ground caused engine to run rich, damaged the catalytic converter. Still need to be addressed. 
114000 mi Inverter coolant pump failed, Inverter temps got too high and CEL lit. Care did not operate at full power, lost AC. Had Recall notice in car but hadn't had it performed prior to event. Repaired at no cost. 
171000 mi

US $450
Leaking water pump Leaking radiator 
155000 mi

US $380
I.C. Engine water pump.Remove and replace. 
145000 mi

US $1500
Water pump was replaced. 
191700 mi

US $300
Replaced one of the coils 
96000 mi

US $200
Water pump leaking. Water pump was previously repaired under recall. 
151000 mi

US $1200
Replace hybrid water pump and leaking radiator. 
144500 mi

US $470
Inverter cooling control valve replacement (check engine light came on) 
161000 mi

US $3000
Replace Hybrid Battery Pack 
90000 mi

US $400
Replace water pump for gas engine 
176000 mi

US $480
Inverter coolant pump failed. Electric pump caused fuse to blow and system shutdown. Repaired in one day by dealer. 
114000 mi

US $350
Engine Water Pump replaced (technician noticed leak, and I had read they should be replaced in the Prius at ~100K). Noticed during inspection. 
164000 mi

US $147
I brought the car in for its standard 5000 mile oil change, tire rotation, and inspection. The inspection revealed drive belt appeared cracked/worn, so I opted to replace it. 
67000 mi

US $350
Inverter Pump...ordered but not yet replaced|car is in shop now. Also(after being told the car was safe to drive until part came in) 12V battery failed on interstate|lost all power and car automatically shifted into neutral|had car towed 
95480 mi

C $50
Water pump (the one for the ICE engine) preventive replacement, sign of light leaks, changed under warranty. 
106180 mi

C $200
One ignition coil was full of water. When the engine was warm (lean combustion) engine was knocking very hard, misfire on cylinder #1. The ignition coil has been replaced (95$ part + 1 hour work) and the problem has been solved. 
128000 mi

US $250
Leakage from the dealer installed recall water pump required install of new pump. 
147700 mi

US $360
Craig's List ad for main battery repair due to lower charging over several months and unusual charge rates. Check performed on all cells and two replaced. Solved inconsistency noted in battery feedback and MPG improved to 49 from 44. 
152000 mi

US $450
Had main battery checked and replaced three of 28 cells. Charging of battery had been rapid cycle indicating a problem which was resolved 
98580 mi Water pump changed after replacing the serpentine belt. The dealer suggested the replacement of the ICE water pump after seeing light coolant leak. The change was done under warranty. The dealer did the replacement on my second Prius too. 
119040 mi

C $100
Fuel injection system needed to be adjusted and cleaned. 
124000 mi

C $300
Water pump was leaking - needed to be replaced. 
115000 mi

US $460
While the car was at the dealership for an oil change, we were told that the inverter coolant pump was noisy and needed replacing. The car was taken to an indy shop, who said that there was no problem with the inverter coolant pump. 
262000 mi

US $30
Engine began missing, running rough. MIL came on in 20 miles. Replaced spark plugs to correct. They had at least 68K miles on them, the amount I put on the vehicle. 

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2003 Toyota Prius

Engine not specified

101000 mi

US $3100
Hybrid battery was leaking and past warranty. The warning lights,etc were the same as when the "throttle needing cleaning." Could they not have told me this before it was out of warranty? 

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2003 Toyota Prius 4dr Sedan

70-horsepower 1.5L I4 Hybrid CVT FWD

115340 mi

US $385
replaced waterpump 
160700 mi

US $2500
This car was not running right when i purchased and it's not running at all now. I removed the HV Battery and ordered a rebuilt one. 
96000 mi

US $250
Problem was with hybrid battery and systems. Original warranty covered repair. Also replaced water pump (owner expense). 
140000 mi

US $500
Replaced inverter cooling pump 
59982 mi ECU replaced under warranty. 
90482 mi

C $900
codes: p0440 p0441 p0446 p0300 p0202 p0504. Diagnosed faulty coolant pump. Replaced. Bled. Unknown at to why they did not get this covered under hybrid systems warranty. 
142600 mi

C $70
Engine was missing and running rough. Worse on wet days and when engine was warm. Problem was intermittent. Codes were random misfire on most cylinders. Codes P0300 P0302 P0303 P0304. It turned out to be one bad ignitor. One bolt to replace. 
160300 mi Misfiring cylinder 
176300 mi

US $1200
Catalytic converter 
96000 mi

US $360
Main hybrid battery gone bad. Too expensive to replace relative to value of car. Disposed of car 
101700 mi

US $50
Water pump bearing had been noisy for a couple months. I replaced it. 
134000 mi

US $887
electric pump in cooling system of hybrid/electrical drive system failed. Had to chase the problem, then take front bumper off and left headlight out, to replace this 'coolant pump'. 
161000 mi

US $760
Transmission mount broke, dropping transmission case onto left front axle... REquired new mount and new axle 
102000 mi

US $80
Belt on water pump cracked. 
47000 mi

US $2200
HCAC bypass valve stuck. Toyota has to replace entire exhaust and catalytic converter because of one small part that rusts shut. 
134000 mi

US $130
Cat needed holes closed 
160000 mi

US $500
Check engine light. Code 3130. Need new inverter coolant pump. Mechanic says radiator leaks. Cost estimate $1000. 

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2002 Toyota Prius 4dr Sedan

70-horsepower 1.5L I4 Hybrid CVT FWD

180500 mi

US $1600
Hybrid Battery needed rebuild 
148180 mi

A $155
Car displayed CEL with other warning lights and would not start after 12V battery went flat and was recharged. Workshop cleared codes and car started and ran without further issues. 
148780 mi

A $461
Inverter water pump replacement 
156860 mi

A $270
High voltage battery replaced 
129000 mi

US $799
Fuel pump failed - had to replace both pump and fuel tank as they are one unit in this Prius. This vehicle is a piece of s---. 
225000 mi

US $2150
HV battery failed and replaced 
229000 mi

US $5
P1436 code check engine light. Lubed and freed catalytic converter warmup valve. Sticks from road grime. 
234000 mi

US $120
exhaust gas leak. Attempted replacing both donut gaskets to no avail. trying other things next. 
295000 mi

US $1100
Plug for catalytic warm up valve broken wire 
131000 mi

US $105
The dealer cleaned the Mass Air Sensor to cure a stall-at-start-up problem that I used a work-around for 5 years to avoid (I shifted into Neutral after start-up and waited to hear a relay click before shifting into Drive). 
155500 mi

US $495
Hole in the radiator; had to replace radiator. 
109000 mi Replaced the oxygen sensors. Heater for one seems to be bad. 
1000 mi bad sensor on the catalytic converter. Covered under warranty 
110000 mi

US $2800
MG1 hybrid electric traction motor failed. 
79000 mi

US $500
Replace inverter coolant pump 
254000 mi

US $140
inverter pump quit, replaced 
119240 mi

€1500
Car entered limp mode, with only electric motors working (gasoline engine would not start). After a tow to the dealer, the car was diagnosed with a catalytic converter failure, which was replaced. 
119660 mi

€1500
Car drove normally, except for a loud whine and a shudder when starting from a complete stop. OBD2 scanner showed excessive MG2 temperatures, so the shop replaced the motor assembly. (Repair cost is approximate) 
120280 mi

€150
Replaced HV battery wiring harness (corroded). Problem was discovered with Toyota OBD scanner while trying to diagnose another problem (engine not starting). Engine started then stalled after a few seconds. Fixed by cleaning the throttle body. 
168500 mi

US $1700
MG2 stator burnt, replaced. 
130000 mi

US $21500
main computer at 16,000 miles (very cold -25 degrees) replaced no problem. warranty No other problems / repairs 
155000 mi

US $1100
sensor, communication between motor and hybrid system 
70000 mi

US $7000
Power inverter coolant pump failed; told had to replace both pump and inverter. Requested dealer repair comp parts, since car only a couple of months out of warranty; they refused. When the car was returned the AC did not work, 2nd repair 
146300 mi

US $395
HV battery replacement. Replacement battery was a re manufactured battery from ReInvolt. 
153700 mi

US $250
inverter cooling pump failure. 
20539 mi Replace charcoal canister (warranty) 
57078 mi Replace ECM (warranty) 
64920 mi

US $150
Replace Crankshaft Position Sensor (warranty), replace weatherstripping in trunk 
116694 mi

US $1717
Replace Hybrid Battery - 50/50 split of cost with dealer 
156300 mi

US $1400
Catalytic converter replacement 
102889 mi I think this was the gas tank problem (warranty repair). Error code: TSB 0-180-09. Corrected by EG9016. 
165000 mi Cell 6 of HV battery is weak. Lots of conflicting advice from mechanics and Prius owners who have dealt with this problem. Can drive for a year or a day. 
224000 mi

US $516
Inverter electric water pump replaced,none in USA per dealer had to use rental for week. 
242000 mi

US $90
engine shuddered on start up. Replaced plugs because computer readout said misfire #2. Swapped coils around to verify not coil. Mechanic said valve cover gasket leak might be cause will cost $150 to replace. Then will have to do cmptr ck agn 
249000 mi Warning lights are on. As of late July still haven't taken it to the dealer. Shudder, gasket leak still present as well. 
250000 mi

US $2633
I found Greentec auto online and ordered a replacement 1st gen battery pack. They came down from Dallas and removed/installed battery pack behind back seat.The total bill was for labor, material and sales tax. 
251300 mi

US $50
I had a couple of warning lights come on that the manual said tow to dealer. I trailered it myself, it ran but I didn't know how long it would.They did a diagnostic test and said the battery pack was defective. Greentec auto called me and had me do some simple diagnostic tests involving the warning lights. They agreed the battery pack was defective and sent a tech with replacement battery pack. 

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2001 Toyota Prius

Engine not specified

126000 mi

US $700
I successfully rebuilt the main hybrid battery using gen 2 cells. 

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2001 Toyota Prius 4dr Sedan

70-horsepower 1.5L I4 Hybrid CVT FWD

US $450 replaced transmission with a donor (junk-yard) 
227000 mi

US $48
Cat Converter sensors indicated failure. Mechanic advised me to put tape over the indicator light and keep driving. Will not effect operation or mileage. 
264000 mi

US $100
Drive battery bit the dust. Failure warning. Cost to repair is $3,500+. Car is being sold for scrap. 
123000 mi

US $400
I got the triangle w/!, the car continued to function, I took it directly to my local shop, Ozzie's. Diagnosed (from the code) that the ignition coil was bad and needed to be replaced. They also replaced the spark plugs (1st time in yrs) 
132000 mi check engine light came on, it turns out it was just the gas tank cap. I had driven to the desert and back the day before and probably the change in altitude going over the mountains affected it. It was on empty when the light came on. 
78000 mi

US $3100
Big (270 volt) battery replaced. 
125860 mi

C $1500
Hybrid Inverter 
113000 mi

US $300
broken exhaust pipe; repair caused rattle fixed by dealer 
140000 mi

US $1000
Inverter water pump failure. 
134300 mi

US $2050
Received a reconditioned "main" battery pack, from Green Tec up in Sacramento, CA. Pack was installed at my home, and old battery pack went to them. $1700 plus $350 for installation. 
133000 mi

US $100
Getting a leak to ground fault. I had the problem diagnosed at a non-dealer shop, and took it to the dealer to get additional diagnosis. After spending $100. dealer gave me only the code I already had! Dealer did not provide subcodes. Replaced MG2 rotor. Replaced main battery 
110000 mi CC giving P0420 error. Apparently a known issue. $1500 to repair just for parts. Living with it. 
150000 mi

US $300
Replacement catalytic converter, generic part, to solve Check Engine light issue. 
245700 mi

US $1415
catalytic converter needed to be replaced, since Calif. will be requiring smog checks sometime in 2015 
137020 mi Malfunction of engine/drive system.. Car stalled out a few times, dealer could not repeat and no repair was done... Has not reoccurred but does show up at least once a year. 
117000 mi

US $1300
Failed emissions test for ongoing problem with ECM that causes the cel to come on in cold temperatures. Initially diagnosed in December 2007, but the repair was expensive and only intermittent, so I held off. After I called for appointment for previously listed problem, CEL came on and stayed on despite warmer temps. Mechanic notes: FOUND 3 DIFFERENT CODES STORED IN THE ECM, ECM CODE, CODE P0171 FOR A MASS AIR FLOW SENSOR, ALSO FOUND A 300 MISFIRE Replaced ECM. They reviewed my service history and agreed to cover cost given I'd had almost all maintenance done @ a dealership. 
118000 mi

US $431
Replaced Air Flow Sensor, $253 
130000 mi P0302 - Cylinder 2 Misfire Detected Since spark plugs had been done one year ago, that was not suspected as the problem. May have been a loose gas cap. Code reset, will see if comes back on. 
199000 mi

US $2450
traction battery (the big one) tested bad, with two cells failing. Throwing codes and red triangle warning icons. Installed refurbished battery 
277700 mi

US $2500
HV Battery replacement. Replaced with battery from re-involt. 
150040 mi

C $1500
Drive battery replacement 
114300 mi

US $110
Check engine light on signaling fault in fuel tank vapor recovery system. Dealer diagnosed as the filler cap or the vapor cannister. Suggested replacing the cap but didn't have one in stock. 
117700 mi

US $10
Car recorded an error code for fuel tank vapor recovery. Hose clamps on vacuum lines had rusted, allowing a vacuum leak at fittings. I replaced clamps and the code has not returned. 
65000 mi

US $100
Fan belt needed to be replaced. New air filter. 
230000 mi Car would not start (no "READY" light, and all error lights on). Mechanic traced to engine computer not communicating with hybrid computer. I declined repair due to the cost. I am not operating the car now even though it runs and drives. 
200000 mi

US $450
Water pump replaced that cools electric motor. 
148000 mi

US $3100
HV (hybrid) battery had a bad module, required replacing and new harnesses. 
187000 mi

US $510
Car had check engine and major warning lights come on. I coasted it to a stop, had it towed it to auto mechanic. DTCs included for Aux battery, transaxle, inverter. DTCs localized to MG2 (= the larger of 2 electric motor/generators in HV transaxle assembly). Said to replace full Transaxle for $5,400. Luscious Garage in SF does MG2 replacements for $2,700. But I'd need to get car towed to SF. 
202000 mi

US $3000
Replaced MG2, the motor generator. 
249000 mi

US $50
Replaced gas pedal assembly/ throttle position potentiometer defective and caused engine to stall/shut down / dealer price was $425.00. I purchased pedal from 25k mile salvage Prius for $45.00 off eBay+ $5 shipping.  
215000 mi

US $424
Had to clean the Mass Air Sensor and the intake. The motive battery charge was very low which caused the dire warnings and did not let the engine to keep running. 
232500 mi

US $80
Mass Air Flow sensor 
99000 mi

US $2157
replace main battery with refurbished. also replace serpentine belt, cracked, cooling system flush / inverter, drain and fill transmission fluid. car owner paid FULL cost of repair. 

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2001 Toyota Prius 4-door

4-cylinder automatic 2WD

87000 mi

US $998
Was told hybrid battery bad, would cost an additional 1675 (above 998 for brakes) told them to wait on battery, no $ for that now. 
95000 mi

US $890
Got triangle warning/check engine lights. Dealer said it was engine startup/misfiring problem in the fuel injection system and they would have to replace gas tank, clean the (something)plate, replace the spark plugs, etc. 

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Toyota Prius Engine Problems

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