2003 Toyota Sienna Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 Toyota Sienna

2003 Toyota Sienna Problems

Problem With Door Mechanism in Electric Sliding Doors

Models with electric sliding doors can develop problems with the door mechanism. The cable in the door becomes frayed, which will damage the electric motor.

Oxygen Sensor May Fail

One or more oxygen sensors may fail resulting in illumination of the Check Engine Light.

Sludge Buildup on Engine Due to Infrequent Oil Changes

Sludge can build up in the engine because Toyota did not recommend frequent enough oil changes. Lexus will sometimes offer a discount on cleaning the engine if necessary. Owners who changed their oil every 3,000 miles did not experience these problems. This sludge build up can lead to excessive oil consumption.

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2003 Toyota Sienna Questions

Repair costs (1 answer)

I had a Prius it was difficult to repair and expensive. I had to take it to the dealership just to have the oil changed due to it being a hybrid.
Now I am looking at a buying a Sienna. Are they difficult to repair? Could I do basic repairs?
Thx

AC quits cooling after about 1 to 1-1/2 hours continuous use and ac light blinks (1 answer)

After non-use for a while it will cool again. New condenser and Freon.

P0155 oxygen sensor heater circuit bank 2 sensor 1 (1 answer)

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2003 Toyota Sienna Recalls

Toyota Recalls 1998–2010 Siennas Due to Problems with Spare Tire Carrier and Assembly Cable

Toyota is recalling 1998–2010 Sienna models manufactured or registered in twenty-two Eastern and Midwestern states because of problems with the spare tire carrier and assembly cable due to road salt corrosion. This may cause the spare tire assembly cable to break and the spare tire to separate from the vehicle, increasing the risk of a crash. Toyota will notify owners via letter with instructions on how to remedy the problem. For a list of the affected states, call Toyota at 1-800-331-4331.

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2003 Toyota Sienna Reviews

I bought it new. It is now at 108K. Nothing has gone wrong except one thermostat and word out brakes. Chaged timing belt and water pump at 100K. This is a completely reliable great car. I plan to give it to my son and expect that it will go another 100K miles.

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