2009 Toyota Corolla - Japanese built ABS/brake warning lights at approximately 31,000 miles. 1. diagnostic computer indicates trouble codes C0210 (speed sensor failure) and C1238 (plug to right rear wheel assembly). Plug to ABS sensor and terminal repair kit work at 32, 126 miles. 2. 2nd diagnostic computer reading indicates "inactivity with left rear ABS sensor". ABS/brake warning lights again. In addition, lights are now accompanied by frequent loud noises in the engine compartment, significant vibration though the brake pedal, momentary partial brake failure. 3. return for 3rd inspection of both left/right rear wheel hub assemblies. Mechanics again reinspect, clean and apply electric grease to both rear ABS sensors and road test the vehicle. Same issues reappear after only few miles of 3rd repair. Mechanics now determine there is too much corrosion in the right rear ABS speed sensor connection in the right rear wheel hub assembly for the ABS speed sensor plug to connect securely and the right rear wheel assembly must be replaced. This is an expensive part at $372-$443 retail plus labor for either Japanese/North american built Corollas. The accompanying loud noise in the engine compartment has been determined to be the separate but associated ABS module within the engine compartment. The defective ABS speed sensor/rear wheel hub assembly in the right rear wheel causes incorrect readings by the ABS module in the engine compartment, incorrectly assuming there is wheel slippage at certain wheels and "causing the ABS module to go haywire" in attempts to correct what it thinks is wheel slippage. This appears to be a common defect since similar complaints have been filed; see "consumer complaints/ODI case numbers 10381428 (2/10/11) and 10320698 (3/18/10).

- Liverpool, NY, USA