2004 Toyota Sienna Toyota Sienna 2004

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2004 Toyota Sienna repairs by problem area

Engine (26%)

Transmission and Drivetrain (5%)

Brakes and Traction Control (5%)

Suspension and Steering (20%)

Electrical and Air Conditioning (23%)

Paint, Rust, Leaks, Rattles, and Trim (6%)

Other (15%)

Chart based on 522 repairs.
See TSBs and recalls for the 2004 Toyota Sienna.

2004 Toyota Sienna engine repair cost distribution

$2500+ (4%)

$1000 - $2499 (14%)

$500 - $999 (18%)

$100 - $499 (38%)

< $100 (27%)

Worried about potential repair costs? An extended warranty can provide peace of mind.

Chart based on 128 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2004 Toyota Sienna 4dr Minivan, ext.

230-horsepower 3.3L V6 5-speed automatic FWD

135000 mi

US $160
coolant plug on engine block was leaking 
143000 mi

US $2000
fluid leak in block 
177600 mi

US $257
Flexible pipe between resonator and catalytic converter 
147500 mi

US $50
leaks in exhaust system 
158000 mi

US $400
Exhaust leaks. Bad flex pipe. 
171400 mi

US $200
Leaking coolant from block heater plug 
249000 mi

US $720
Replaced catalytic converter after multiple codes misfired 
102340 mi

C $120
Exhaust flex hose had leak - new flex joint installed. 
104780 mi

C $484
Replace Bank 2 Sensor 2 
161200 mi

C $220
exhause flex pipe leaking - was replaced. THis was welded to repair about 4 years ago 
99500 mi

US $2800
Heater would not heat on driver side and they have to replace the heater block. 1500 plus for parts and 1200 for labor. It will require 12 hours for repair. This has been a problem for a year and they have tested it before to find problem 
226400 mi

US $126
Engine block off plate corroded and was leaking coolant. Replaced plate and replaced coolant 
238400 mi

US $962
Replace leaky radiator 
250000 mi

US $286
Replace exhaust system gasket to repair leak, $70 
277000 mi

US $355
Replace section of exhaust downstream of catalytic converter Replace belts 
296000 mi

US $252
Cut and splice weld front flex exhaust 
304000 mi

US $192
Weld pipe for exhaust 
316000 mi

US $420
Tighten squealing belt. 
173900 mi

US $800
replaced catalytic converter 
183300 mi

US $1300
Corroded radiator caused the trans fluid lines to mix with the anti-freeze lines. The transmission suffered, the engine overheated. New radiator was needed; new condensor needed as it could not be removed from radiator w/out damage to seal 
203000 mi o2 sensors 
114000 mi

US $944
Both oxygen and air fuel sensors replaced. 
103000 mi

US $1106
Replaced radiator assembly 
129000 mi

US $2500
Cylinder sensor, timing belt 
136800 mi

US $900
Fuel pump, first fuel pump was faulty, the second fixed the issue 
217000 mi

US $1500
Had to replace both front and rear catalytic converters. 
122000 mi

US $125
Rusted through exhaust pipe 
124000 mi

US $10
New radiator cap to fix collapsing upper radiator hose. 
129000 mi

US $1800
Leaking radiator replaced. Also did the thermostat for good measure. 
18500 mi

US $2200
CAT Converter Replacement. 
85000 mi

US $700
Needed to replace fuel oxygen sensor. Sensor seized and mechanic could not get it out (or at least he stopped trying). So we had to replace the exhaust manifold (to which the sensor is attached). I'm still angry about this one... 
161500 mi

US $275
Radiator was leaking. Radiator & coolant were replaced. 
139000 mi

US $3500
Needed new radiator and a new coil. Coolant leak was cleaned up. 
152000 mi

US $400
broken thermostat housing unit 
163000 mi

US $60
Engine light came on. Error code P0430 came up on the scanner, but mechanic did not find any leaks. The car drives fine, no lack of power, no strange smell, no decrease in gas efficiency. 
170000 mi

US $750
Radiator was leaking. Replaced. 
177000 mi While on a trip in 100 degree weather the car overheated and lost power. Feared engine failure. Turned out water pump had seized and chewed up the timing belt. Engine fine otherwise. 
Transmission wouldn't stay in 2nd gear, skipped from 1st to 3rd Radio fell apart 
90000 mi Replaced timing belt and water pump 
182000 mi

US $45
replaced MAF sensor and pcv valve 
158000 mi Minor exhaust leak in a hose. Hose was replaced. 
82460 mi

C $450
RADIATOR HAVE SMALL LEAKS. REPLACED RADIATOR AND COOLANT ANTIFREEZE BY OWNER. 
270000 mi

US $260
Replaced timing belt and tensioner under warranty. 
85000 mi

US $1600
Water pump, timing benlt, drive belts, engine seals d/t wear 
98000 mi

US $1700
coolant leak noticed at time of service 
145000 mi

US $950
Thermostat and housing Intake manifold gasket 
148000 mi

US $250
2 oxygen sensors 
152000 mi

US $900
catalytic converter, check engine light on. 
195500 mi

US $85
Emissions system, gas cap. 
200000 mi

US $1900
Motor Mount. 
52080 mi Dealer service tech identfied that radiator was leaking. Parts unavailable at the time. Dealer replaced radiator at no cost. Although original warranty had expired for this item dealer found a Toyota WAB (unsure of acronym or meaning) which covered 100% of costs (parts & labour). Would have been costly! 
176700 mi

US $60
Exhaust leak at Crossover to Catalytic pipe joint, replace gasket and hardware. 
192500 mi

US $112
Slight radiator leak for several years, only several ounces of coolant lost per year. Major increase in leakage suddenly. Removed and epoxy repaired leak areas, reinstalled radiator, replaced upper and lower hoses. 
193700 mi

US $12
Pipe to muffler flange leak. Replaced gasket. 
188500 mi

US $429
Coolant leak, replaced Intake Manifold Gaskets. 
215000 mi

US $6
Patched leaking Front Bellows Joint on exhaust. 
220500 mi

US $979
Flex joint and flange/gasket failures. Replace all gaskets, Y, resonator and tail pipe, muffler. Kept main CAT. 
248000 mi

US $304
Failed AM middle (resonator) exhaust pipe at rear flange. Replaced. 
249000 mi

US $45
Intermittent rubbing noise when in D. Engine pulleys rubbing when engine/trans-axel under load. Replaced upper torque strut for broken/worn shock mounting. 
235000 mi

US $145
Worn motor mount needed to be replaced. 
246000 mi

US $200
Replaced all four motor mounts. 
260000 mi

US $593
Replaced radiator fan assembly. 
262200 mi

US $200
Radiator needed to be replaced as transmission fluid was being mixed with engine coolant due to internal leak. 
263000 mi Failed smog check 
76000 mi

US $50
poor heat therefore changed thermostat, problem fixed. 
103000 mi

US $3000
Radiator leak while driving. Radiator could not be changed by itself so condensor had to be changed too. Hoses, belts and thermostat changed while it was in the shop. 
130000 mi

US $1500
Oxygen sensor. catalytic converter 
139000 mi

US $160
Flex Exhaust pipe off manifold pipe. 
163000 mi

US $850
Catalytic converter , 1 of 3 on the car 
206000 mi

US $400
Muffler pipes only not muffler 
234000 mi

US $40
Temperature sensor Catalytic converter code I used catalytic converter cleaner cost $25 a bottle but was on sale, but one get one free at advanced auto. Add cleaner to 1/4 tank of gas or 4 gallons drive 10-15 miles and fill up tank. Worked like a charm! 
117000 mi

US $898
Y-pipe replaced ... leaking loudly. 
72000 mi

US $450
vehicle failed mass. inspection due to exh leak in flex section between manifold and exh pipe to cat converter. not covered by emission warranty. 
102600 mi

US $1000
oxygen sensors, 2 within 2 days 
104000 mi

US $600
coolant leak at a freeze plug on front of engine. 
106000 mi

US $600
2 oxygen sensors out of 3 in system failed a few days apart 
88000 mi

US $450
Flexible exhaust pipe had a crack in the seam. 
105500 mi

US $500
Timing belt, big end seal, cam seals, motor mount 
120200 mi

US $200
Down pipe between the engine headers 
65000 mi

US $280
O2 sensor failed. 
71000 mi Radiator leak. Radiator replaced. (Covered under extended warranty) 
80000 mi "Traction Control" sensor came on and car would not accelerate. 
108000 mi

US $410
intake and exhaust valves bent b/c of faulty installation of timing bel 
120000 mi

US $870
Radiator replaced. 
134900 mi

US $140
Coolant leak. It was not the water pump nor a hose; I don't remember the term used by the mechanic. Apparently it is a common problem for Siennas. 
79000 mi

US $2000
Coolant leak. Required a lot of work to fix it. 
91760 mi

C $700
Exhaust pipe @ manifold had a hole in it. 
104780 mi

C $240
There was a cracked gasket that was causing a slow antifreeze leak in the cold weather. 
67000 mi Front engine motor mount replaced. Changed front engine mount. Flushed/filled transmission, brake, and power steering fluid. 
88000 mi

US $1000
Exhaust leak in original exhaust. 
89000 mi

US $450
Coolant leak repaired. 
173600 mi

C $450
Exhaust pipe rusted through. 
129000 mi

US $25
Belt for alternator and compressor 
164000 mi

US $65
Cleaned MAF 
80000 mi

US $254
Fluid leak block off plate. 
108000 mi

US $600
water pump leaking. decided to replace instead of waiting for in use failure cracked engine mount, rear replaced 
112000 mi

US $180
Radiator was leaking - radiator was replaced - Toyota paid for 1/2 of new radiator & dealer paid for 1/4 so I was left with 1/4 of the bill...amazing 
112000 mi

US $180
Radiator was leaking - radiator was replaced - Toyota paid for 1/2 of new radiator & dealer paid for 1/4 so I was left with 1/4 of the bill...amazing 

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2004 Toyota Sienna 4dr Minivan, ext.

230-horsepower 3.3L V6 5-speed automatic AWD

77900 mi

US $200
Did the long overdue valve adjustment. Replaced or moved 17 shims. 
134735 mi

US $390
Mice chewed ignition wires, 2 coils replaced 
125000 mi

US $100
repair to exhaust system 
129000 mi

US $1500
Found radiator leaking. Replaced that and A/C condensor which supposedly could not be removed from radiator without stripping threads of bolts connecting it to the radiator.  
165000 mi

US $250
Replaced Knock Sensors due to code showing sensor failure. Replaced both even though code was only for #1. Replaced coolant crossover line that was leaking while the engine was open. Also replaced spark plugs and O rings on fuel injectors 
174000 mi

US $500
Muffler / Exhaust needed repair 
175000 mi

US $300
exhaust flex pipe broke 
186300 mi

US $400
o2 sensor bad 
203000 mi

US $700
flex pipe 
215000 mi

US $100
engine code due to bad thermostat in radiator - new thermostat and radiator fluid 
56420 mi Checked code and ordered an O2 sensor 
58280 mi

C $85
Installed o2 sensor and reset code, code has not returned at all. 
113620 mi

C $164
Engine warning light (& VSC) burning. Related to oxygen sensor(?) and problem with drivetrain. Computer replacement (#1) however did not fix it. Conclusion:faulty sensor. Needs replacing. 
116760 mi

C $715
Check Engine Light stays on. Replaced Bank 1 Sensor 2 Oxygen sensor. Drive belt screeching. Drive belt coming apart. 
2420 mi Replaced radiator due to anti-freeze smell. Covered under warranty. 
4250 mi Replaced radiator 2nd time due to antifreeze smell. Fixed center row seat belt that stopped retracting. Relubricated door seals due to rattle/clicking of seals against windows over bumps. Covered under warranty. 
7180 mi Replaced radiator for the 3rd time due to antifreeze smell. Attempted to fix rattling from front seat belt height adjusters - no fix, characteristic of vehicle. Relubricated door seals due to rattle/clicking against windows over bumps. Covered under warra 
61000 mi Major fluids leaking - had to take apart and replace all engine seals. While they were doing this, they also noticed that the cooling system had an issue causing the engine to run hot and had to replace those seals. 
86900 mi

US $100
Radiator leaking - 1100 to replace. Decided the car was not worth the investment and will be trading it in. 
96000 mi

US $403
Check engine light turned on and so we had car checked. We had an oxygen sensor replaced as the outcome. We were told it was just wear and tear and not covered by warranty. 
125000 mi

US $1143
The radiator leak (not hoses) was noticed in the shop. The radiator housing had cracked open. 
186000 mi

US $330
Oil pan leaking and gasket had to be replaced. 
122000 mi

US $1400
Engine check during annual inspection, problem with emissions. Parts & Labor >$4,500 by Toyota. Covered by extended warranty. Couple of months more and it would be on my dime. 
126000 mi

US $2500
Had problem with sensors and needed $2500 to fix. Decided to get a new car due to bad history of repairs with this car. No more Toyotas from now on. 
130000 mi

US $100
Front exhaust flex pipe 

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2004 Toyota Sienna 4-door

5-cylinder automatic 2WD

61000 mi

US $585
Found radiator leak two days before leaving on 2000ml vacation. My shop r/r radiator within 24hr and we took off. No problem. 

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2004 Toyota Sienna 4-door

4-cylinder automatic AWD

60000 mi

US $150
Replaced 02 sensors due to check engine light on and several other sensors. 

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2004 Toyota Sienna Engine Problems

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