| 1 | 0 | 3 | 4 | 3 | 4 |
2008 Toyota Sienna repairs by problem area
Engine (23%)
Transmission and Drivetrain (5%)
Brakes and Traction Control (4%)
Suspension and Steering (27%)
Electrical and Air Conditioning (27%)
Paint, Rust, Leaks, Rattles, and Trim (9%)
Other (6%)
Chart based on 270 repairs.
2008 Toyota Sienna engine repair cost distribution
$2500+ (2%)
$1000 - $2499 (7%)
$500 - $999 (14%)
$100 - $499 (34%)
< $100 (43%)
Chart based on 56 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.
2008 Toyota Sienna
Engine not specified
| 19000 mi US $4000 |
The engine accelerated by itself. Brake applied and didn't stop the car on time. The car crashed into a building. EDR data proved the engine problem. |
2008 Toyota Sienna 4dr Minivan, ext.
266-horsepower 3.5L V6 5-speed automatic FWD
| 34100 mi | Stumble at start. Ran a bit rough for first 10 seconds and engine light came on followed shortly by abs and vsc lights. Restarting few times seemed to run fine. Drove around all seemed good. Cancelled lights 9 days ago, all good still. |
| 69200 mi US $120 |
Serpentine belt replaced. |
| 62000 mi US $48 |
Radiator hose failed. Replacement part not available, temporary fix with flexible radiator hose to get home. Ordered part for permanent fix. |
| 53940 mi C $700 |
water pump leaking |
| 161000 mi US $1200 |
Water pump |
| 76360 mi C $300 |
replace oxygen sensor after error code showed up. bank 1 sensor 1. |
| 113460 mi C $200 |
replaced spark plug and ignition coil |
| 111547 mi | replaced idler pulley, tensioner and tensioner pulley, alternator pulley. Access required removal, reinstall, and recharge of AC. replace sqeaking fan belt pulleys and tensioner. |
| 117000 mi | Remember that recall for the VVT-i oil lines? While replacing my sway bar end links I noted some oil seepage from an area behind the power steering pump. I haven't attempted the fix yet, but the lower banjo bolt for that line is leaking. |
| 138000 mi US $860 |
Squealing sound, not unlike a slipping belt. Took to local independent shop. One idler pulley and alternator pulley found bad. The alternator is difficult to get to and a replacement wasn't available in the area, so the van remained in the shop over a weekend. |
| 172000 mi US $150 |
replaced ignition coil |
| 107000 mi US $250 |
Failure of rubber hoses of oil line between oil filter and oil cooler. Known problem with this model - TSB out. Metal part to replace rubber hoses |
| 63860 mi C $600 |
Engine oil leak from cooler line. Engine ran dry, not covered by powertrain warranty. TSB issued/part redesigned years earlier to eliminate rubber portions. Common problem with 3.5 v6. Mfg/dealer covered 2/3 after I filed a BBB complaint. |
| 91760 mi C $460 |
Chnange water pump. Original was leaking. |
| 120000 mi | lost all oil at highway speeds. towed to dealer and found the rubber line to the oil cooler blew out. fixed under factory recall on known oil line issue. dealer paid for tow also. excellent customer service. |
| 18260 mi | Air/fuel sensor dies; replaced under warranty by the dealership. |
| 115000 mi US $600 |
The water pump was failing. The pump and related parts (pulley, belt) were replaced. |
| 67000 mi US $350 |
Hose that runs from engine to oil cooler developed a pin hole leak and had to be replaced. Oil was rapidly dripping from front of engine and was spraying on exhaust and was smelly. |
| 84000 mi US $50 |
Exhaust shields around exhaust pipe -- the clamps were rusting and rattling. The shop removed them. |
| 93000 mi US $60 |
More exhaust shields were removed -- fasteners corroded |
| 39000 mi US $400 |
Oxygen sensor went bad. Sensor 1 bank 1 right against the firewall. |
| 130300 mi US $190 |
Oxygen sensors replaced by myself, as fuel mileage had declined and exhaust was getting sooty. |
| 142000 mi US $60 |
Serpentine idler roll squealing. Bearing worn out; replaced roll. |
| 149900 mi | oil leak in back of engine. suggested removing engine to determine source |
| 11300 mi | Catalytic converter replaced. Engine lights came on. Still under Toyota warranty but we did buy the extended service contract just because of the problems with the T&C. they kept it 5 days due to wrong part came in and had to reorder part. It is working. Catalytic converter replaced |
| 22000 mi US $650 |
We smelt a strong smell of gasoline. After two visits the charcoal filter and associated pipework were replaced. Smell has now gone. |
| 83000 mi US $1500 |
Oil leak from oil pan gasket. |
| 112000 mi | Car would not start. AAA called and mechanic got it started and recommended taking the minivan immediately to the dealer - suspected fuel filter or fuel pump issue. Dealer could not replicate the problem. |
| 158000 mi US $1500 |
Engine began to overheat. Replaced coolant and leaks detected. Water pump diagnosed at the dealer and replaced. Upon inspection severe rust on the radiator and that was replaced as well. |
| 56300 mi | quick lube shop damaged car causing oil leak |
| 206000 mi US $110 |
Replaced water pump. Found worn bearings/small squeak when changing serpentine belt. Haynes manual indicated need for engine to be removed, not true. Toyota quoted 6 hrs labor. Have read a good tech can do in less than 3 hrs. took me 6 hrs. |
| 237000 mi | Get a P0456 check engine code every 3rd day or so. this code is a small evap leak, checks after 4-6 hours being off. Waiting for warmer weather to troubleshoot. |
| 262000 mi US $200 |
Replaced serpentine belt tensioner assy and the other two idlers. There was a small amount of slop in idler bearings. The tensioner made noise as it pivoted. |
| 282300 mi US $41 |
Had a low pitch rattle in exhaust at low rpm. Replaced Gasket at forward side of resonator. Tech said this junction acts like a flex pipe. |
| 346000 mi US $110 |
Replaced leaking radiator |
| 108900 mi US $80 |
Check engine light came on for cam alignment (timing?). Mechanic said it's a normal response to sludge buildup in 6-cyl Toyotas & did a flush out with an oil change. |
| 71500 mi US $175 |
some hose broke and all the engine oil leaked out and was sprayed around the engine compartment. Car had to be towed. Cost of repair was like $7 for the hose and about $170 for diagnosis, repair, and cleanup. |
| 51000 mi | Replaced O2 sensor under extended warranty |
| 68000 mi | Oil return line burst. Dealer replaced oil line, no charge |
| 130000 mi US $370 |
Coolant was leaking out of hose - had to repair the hose and also repair thermostat that wasn't working. |
| 55000 mi | noise in acc belt on engine shutoff. noise is intermittant. i replaced belt, noise went away for 2 weeks but came back |
| 81000 mi US $30 |
Idler pulley bearing worn, made squealing noise. |
| 95500 mi US $420 |
Leaking oil. Found VVTI tube assy is leaking and pintle hose. |
| 177000 mi US $633 |
water pump |
| 117000 mi US $100 |
Engine was randomly misfiring on longer trips. Would usually go away after turning the car off and back on. Spark plugs and coils were replaced, but problem kept happening. No final solution was reached. Car hasn't misfired in a few months, but nothing was done to fix it. |
2008 Toyota Sienna 4dr Minivan, ext.
266-horsepower 3.5L V6 5-speed automatic AWD
| 150153 mi US $425 |
Water Pump was leaking. Water pump and thermostat were replaced. |
| 100000 mi | replaced leaking radiator timing chain cover oil leak. had to remove engine and reseal |
| 120000 mi US $800 |
replaced water pump and top radiator hose replaced all pulleys that touch the belt to stop noise, belt |
| 228700 mi US $251 |
Replaced one of the catalytic converters. |
| 370000 mi US $500 |
oil seals near oil filter came loose. lost all my engine oil. replaced the seals and refilled with oil. running ok with some minor oil leaks. |
| 4000 mi | Coolant smell -was told it was a "new car thing" |
| 130000 mi US $200 |
Loose gasket in exhaust system replaced |
| 90000 mi | ENTIRE ENGINE HAD TO BE REPLACED. Waterpump as well. Radiator had to be replaced. |
| 142000 mi US $438 |
Engine oil was leaking due to a small tear tear in oil tube. |
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