41000 mi	Second oxygen sensor replaced under our extended warranty (aka prepaid service agreement)
49000 mi	Heard unusual sound; read TSB's consulted dealer, who then replaced the water pump.

116000 mi US $2100

Hybrid Battery Failed

210000 mi US $110

Hybrid battery pack issue

93000 mi €275

Second oxygen sensor caused error P0138 the MIL turned on.

127000 mi US $80

a piece of the exhaust pipe was replaced.

176000 mi

traction battery failing - red triangle of death. Cell block showing much lower voltage.

132700 mi US $500	Hybrid battery cooling fan failure; short in remote wires.
136800 mi	A coolant control valve needs replacement and throws a specific trouble code, but I've chosen to live with it (will repair eventually) as it doesn;t really affect the car's performance. It's the engine coolant; code is P1121; for a "secondary" tank that helps the engine warm up faster (hence why it's a non-essential repair).

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. Edit - After doing a few of these, I'd say it's doable in 6+ hours by yourself, but you definitely need something to help compress the modules in the pack so you can install the bolts on the pack's underside. I use wooden boards of differing widths and a couple wood clamps. If someone is helping you out and they're reasonably handy, you might be able to do this in 3-4 hours.

208000 mi US $100

Another battery module went sideways, but this time it threw one of the "block XX becomes weak" because the module was weak, but hadn't failed (internal short) yet. I had picked up another 2007 Prius from a friend for $1500, so I PNO'ed this Prius and have been driving that since. I have a few decent modules I purchased off ebay to swap into the pack, but I'm planning to pull it and do some thorough testing and possibly rehydrating to see if that improves the pack's performance. TODO - Pull pack, cycle/measure battery modules, try to rehydrate modules with limited capacity, cycle/test those modules again, reassemble, test how the pack does in the car.

113200 mi £60	Pipe separated from flange due to corrosion/wear. Repaired by welding.
148000 mi £20	Exhaust pipe separated from flange due to corrosion/wear ( again ). Repaired by welding.

270000 mi US $1300	HV battery died @ 268K. Replaced with warranted reman unit.
320000 mi US $30	Remanufactured HV battery had bad cell outside of 18 month warranty. Bought used cell off of Amazon for $35 and replaced myself.

93000 mi	Warranty/Service Campaign replacement of the inverter electric cooling pump.
103600 mi US $120	coolant control valve, water pump, thermostat
105000 mi US $50	Cabin heat stopped working
113000 mi US $35	Radiator fill tube replaced. Seal failed causing coolant leak.
112000 mi US $600	Hybrid battery reconditioning

110000 mi

hybrid battery needed to be replaced. Toyota has extended battery warranty to 150k miles.

135800 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.
161800 mi US $800	P3190 and P3191. Replaced fuel tank assembly (includes fuel pump).

284000 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.

163000 mi	hybrid system inverter pump was replaced under campaign warranty.
320000 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
345100 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.

205000 mi US $120	Gasoline engine water pump noisy. Replaced the water pump
246200 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.

133200 mi US $153	Replaced serpentine belt.
182000 mi US $350	Exhaust system replacement

53000 mi US $3879

Hybrid battery failed and needs to be replaced. Will trade car instead.

119500 mi US $200

HV Battery at 40%. Deep cycled 3x.

138700 mi	Replaced hybrid battery pack under warranty
166000 mi US $2000	Hybrid battery pack failure, required replacement

278000 mi US $330

Exhaust pipe patched

97000 mi US $1000	Water pump replaced
101000 mi US $2650	The main battery replaced

174500 mi US $300

Coolant control valve was stuck causing the engine light to come on. Valve replaced.

223000 mi	Traction Battery Cell went bad. Had to pull, rebuild, electrically cycle and rebalance charge on cells.
223000 mi US $2000	I originally was working to rebalance my hybrid battery, but I never got the vehicle back to good condition. I chose to replace with a new hybrid (traction) battery.

98000 mi US $585	Leaky water pump. Pump making rattling noise. Pump replaced, drive belt replaced, system fluid changed and system vacuumed down.
117000 mi US $2600	Replaced traction battery in vehicle after it failed.
117000 mi US $300	Catalytic converter stolen, replaced. Covered by comprehensive insurance. $300 deductible. Repair cost $1800 without insurance.

185000 mi US $28	Oil change
188000 mi US $100	Battery pack errors. Using Dr. Prius app and guidance from Eric Powers I identified and replaced a bad module. But I didn't check the back sides of the bus bars. Reinstalled pack ended up also coding after ten minutes. Removed pack and found one bus bar was black on the back. Cleaned it, reinstalled pack, now working well.

118 mi US $600	Inverter coolant reservoir cracked and discharged, causing car to go into limp mode (25mph) on the highway. Received CEL and notifications on car MFD. OBDII code indicated cam shaft sensor. Took to mechanic, verified diagnosis and replaced cam shaft position sensor.
160000 mi US $300	Replaced PCV. Also replaced spark plugs.

65000 mi US $750

water pump replacement

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 $.

180000 mi US $650

Internals of front catalytic converter had broken loose and were rattling around in the housing. Replaced the whole center pipe and both converters rather than welding.

230000 mi US $100	High voltage battery failure had to replace 2 bad modules
245000 mi US $40	Replaced one bad battery module took 3 hours and 40$.
248000 mi US $40	Replaced 1 bad battery module took 2hrs and 40$
253000 mi US $120	Replaced 3 hybrid battery modules 2 different repair.
273000 mi US $30	Replace 1 hybrid battery module
280000 mi US $80	Replaced 2 bad battery module

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.

114000 mi US $300

Hybrid battery failure and fix

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.

245000 mi US $2300	CEL P0A80: Hybrid Battery Failure. Battery level would quickly charge to full and quickly fall, causing the engine to run constantly. Reduced power.
245500 mi	Code P0A80: Hybrid Battery Failure. Battery failed again two weeks after the first replacement. Replaced under warranty. Same symptoms.

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

158000 mi US $3000	Mass airflow sensor needed to be cleaned or replaced
160000 mi US $500	Exhaust needed replacement

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.

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.
129000 mi	Check engine light came on. Shop read code and diagnosed issue with coolant valve. Will cost approx $500 to repair. Have not made repairs yet.

22000 mi

Traded car with broken transmission coolant pump drive. Dealer performed repair after trade.

124100 mi US $395	thermostat for hybrid cooling system replaced
136000 mi US $3200	Inverter for the power brakes had to be replaced.

110900 mi US $200

Electric coolant recovery pump was making noise so I replaced it.

148700 mi US $2300	Hybrid battery needed replacement.
152000 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.
247000 mi US $300	O2 sensor was 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!

54900 mi US $300

water pump and belt replaced

85000 mi US $240

Thermostat replacement.

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
106000 mi	Hybrid battery failure

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.
102700 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.

98000 mi

Engine water pump weeping coolant- was replaced.

168000 mi US $580	Engine water pump had a slight leak, so it was replaced along with the thermostat (preventative).
180000 mi	Hybrid water pump was replaced

102000 mi	Replace cat converter...what a drag and big bucks!!!
200000 mi	replaced water pump  replaced water pump

41540 mi C $706

Replace water pump (I think it was leaking). done under warranty !!

170000 mi US $240

Rusted exhaust pipe replaced

63000 mi US $498

Grinding type noise noted when gas engine engaged.

37000 mi	Electric coolant pump replaced at Toyota's option due apparently to pre-empt premature failure.
45000 mi	Dealership introduced H2O into the ignition coil areas of 2 spark plugs during routine service. Severe misfiring occurred on engine warm-up. Dealer clean up and dried affected area at no charge (imagine that). Problem fixed.

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).

83000 mi

Went in for routine oil change. When backing out of the garage, the next day, noticed oil spill all over floor. Took car back to dealer, and they had overtightened the oil pan gasket and cracked it, so they had to replace it. No more oil leak!

186000 mi US $35

Burning some oil...had the engine cleaned

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.

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.
157000 mi US $100	Drive belt was cracked so it was replaced.
175000 mi US $1600	Hybrid battery finally died. A private company came to my house and replaced it in under an hour.

78000 mi

inverter water pump failed.

61000 mi US $120

Coolant control valve failed. Part of Emissions system. Required replacement to pass State Inspection. Code P1121.

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 replaced 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

78000 mi	Electric Hybrid Water Pump p/n 04000-32528 replaced under a Toyota Limited Service Campaign. No symptoms noticed, no cost. 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.
101200 mi US $447	Replaced inverter water pump. Also recall C0T - Steering shaft.

73000 mi US $307

Check Engine light went on. Oxygen sensor was replaced. Check Engine light went off.

57000 mi

Coolant transfer pump was squeaking in cooler temperatures, replaced under warranty.

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.
162500 mi US $200	Prior codes were leftovers. Actual codes indicated inverter overheat. Electric side water pump failed. Replaced, ok now.
175860 mi US $1600	Main battery failed. Not the little 12 volt starter, the big high voltage hybrid battery. Replaced with used / reconditioned battery with a 18 month full warranty and 5 year prorated. Could have gotten a 1 year warranty battery for about $800, or a new battery from the dealer for $2400, but the dealer would not offer ANY warranty!
198000 mi US $325	Main (hybrid) battery failed again. Replaced under warranty at cost of labor only.
199000 mi	Cooling valve failed. Replaced by part from China via Amazon. Failed again a few months later. Cooling system valve failed AGAIN. Purchased / replace with dealer part.

61000 mi US $1000

Replaced Engine Seal. HV Water Pump Recall. Replaced Leaking Water Pump and cracked 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.
120000 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

217000 mi US $1800

Catalytic converter

139000 mi US $80

hybrid main battery failure

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.

112000 mi US $350

Replaced leaking water pump and replaced engine coolant

237460 mi C $200	Coolant Diverter Valve replaced.
267620 mi	Engine Water pump replaced
285100 mi C $140	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.
336040 mi C $68	Dealer was unable to resolve no heat problem despite over $800 in costs. I reverse-flushed the heater core numerous times and finally a quantity of what looked like flakes of black paint came out. It now appears to be heating normally

150000 mi US $350

water pump valve needed to be replaced

192500 mi US $2600	Replaced the hybrid traction battery ourselves.
247000 mi US $45	The water pump was making lots of noise when it was spinning; possibly a bad bearing. Replaced the water pump.