2004 Toyota Avalon Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Toyota Avalon

Repair Estimates

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2004 Toyota Avalon
$275 to $604
2004 Toyota Avalon
$260 to $533
2004 Toyota Avalon
$481 to $757
2004 Toyota Avalon
$391 to $711
2004 Toyota Avalon
$351 to $697

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The Check Engine Light may illuminate because a component of the oxygen sensor stops working. As a result the engine computer is unable to determine the proper ratio of air to fuel for the engine. Replacing the failed oxygen sensor should correct this concern.


On higher mileage vehicles, an engine misfire may develop and/or the Check Engine Light may illuminate due to a failed ignition coil. It is not uncommon to replace all the coils when the first one fails in order to prevent return trips to the repair shop.

The Evaporative system may have problems with the vapor canister releasing charcoal pellets that plug the vent valve. Typically a Code P0441, P0442 and P0446 will be set. The key code is the P0446 which is a vent valve electrical failure. The proper repair is to replace the entire canister with all the valves as a unit. This is located on top of the fuel tank and is expensive. Our Technicians tell us that for awhile Toyota was covering these problems, but this may have changed. It would not hurt to call the dealer if this problem occurs to see if Toyota is still helping with these repairs.

See More Problems 5

The airbag control module can fail prematurely due to electrical noise beyond the tolerance it was designed for. As a result the front airbags, side airbags, and/or seatbelt pretensioners could deploy inadvertently while the vehicle is being operated, increasing the risk of personal injury and/or a crash. Dealers will replace the airbag control module and front and/or side impact sensors as required to correct this concern.

Circuits in the supplemental restraint system may short, resulting in damage that may unintentionally deploy the front air bags and / or seat belt pretensioners. Dealers will install a noise filter between the air bag control module and the affected wiring harness free of charge to resolve the concern.

The amount of adhesive applied between the inner and outer parts of the crankshaft pulley may be inadequate. If this is the case, the outer ring may become misaligned and/or not properly rotate with the inner ring, causing an abnormal noise and/or illumination of the Check Engine Light. In some cases, the power steering belt could come off resulting in a loss of power steering assist, increasing the risk of a crash. Dealers will inspect the crankshaft pulley and replace it if necessary.

See More Recalls 4

Bought our car new Oct ’03. My wife picked this car over any other car, mainly for its roomy back seat and comfortable ride. At the time I didn’t even know that Toyota made a model called the Avalon. I have come to like this car for its overall economy in MPG, maintenance and great ride. In 53,000 miles we have replaced 4 tires and the rear brakes. It’s not a head turner, nor a tire burner, b...

Bought this one used with 114,000 miles. Have had nothing but continuous expensive repairs. Love the looks of the car, both inside and out. Love the ride and all the conveniences but hate the expense. From papers left in car, new price was $35,774. I paid $7900. Have paid out about $7500. Which means I paid over $15,000 for a car that list at 12,000.

this car is like a Camry XLE from later years...solid as can be...

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