2012 Toyota Avalon Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2012 Toyota Avalon
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2012 Toyota Avalon ProblemsCheck Engine Light Due to Failed Oxygen Sensor
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.
The motor for the rear window sunshade in the Toyota Avalon is known to fail. When this occurs, the sunshade will not extend down the window, and a grinding noise is heard until the motor fails as well.
Replacement of the sunshade assembly is necessary to correct this failure, however, removing the fuse for the sunshade will stop the motor from making the irritating grinding noise.
The VVT-i oil line is known to burst. This is a very large leak which covers the ground, engine, and undercarriage.
If the oil line ruptures while driving, the low engine oil message and engine oil pressure warnings will illuminate. Continued use after these warnings will result in complete engine failure due to oil starvation.
The line is known to be defective, and a revised part has been issued by Toyota, however, this revised part is known for the same issue.
To repair the issue, the line must be replaced, and the engine bay and undercarriage must be cleaned thoroughly.
2012 Toyota Avalon QuestionsWhat would cause rear suspension thump noise during cold temperatures? (1 answer)
2012 Avalon with 16,000 miles on it. On 11/10/2012 and 01/28/14, car was brought to the dealership for a rear suspension thumping noise happening during cold weather. Both times mechanics said they cannot find anything wrong, nothing is lose with the suspension, and there are no TSBs. Noise happe...
2012 Toyota Avalon RecallsSubwoofer Speaker
These vehicles are being recalled because of an electrical fault with the subwoofer, a component of the stereo system. A short circuit may develop which can result in fire. While a remedy hasn't been announced, an interim fix which disconnects the subwoofer has been implemented by dealers.
As part of normal operation of the air conditioning system, condensation will accumulate in the condenser housing behind the dashboard. A drain is incorporated so that excess water can drain out. This drain hose can become plugged, the accumulated water can leak onto the airbag control module. This can result in an electrical short in the control module. If this were to occur the airbags could become disabled or deploy unexpectedly. Improper airbag operation increases the risk of personal injury and/or a crash. The power steering assist could also become inoperable resulting in increased steering effort. Dealers will seal the air conditioning condenser housing and install a protective cover on the airbag control module to correct this concern.