ABS Sensor after rear brake replacement

Asked by Mar 08, 2019 at 09:57 AM about the 2013 Buick Encore Convenience FWD

Question type: Maintenance & Repair

My car's ABS sensor light came on 2 weeks after having the rear brakes
replaced and the rotors turned.  The ABS sensor that failed was the rear.  Is
this a coincidence or could the sensor have been affected by the brake job?

3 Answers


If this is actually a failed sensor, it's not likely that a brake shop would cause this unless they accidentally damaged a wire, and then failure would have been immediate. But if the brake job was done incorrectly, like failing to bleed lines properly, this night the cause, but you would see affects of this, like a soft brake peddle. If it was shop related, it might be that they got dirt or brake dust on the wheel speed sensor. But it's more likely that this would happen while car was moving after service. Ask the shop to check the system and they'll see if cleaning the sensor is all that's necessary.

I picked up the car from the Dealership and on the repair order the following description was provided. "Magnetic trigger on back of bearing has contacted speed sensor causing damage." I questioned the Service Manager and he provided schematics and the old bearing to show me were the sensor is located. I even asked if in removing and replacing the brake pad or turning the rotors could have had a impact on the magnetic trigger, they responded in the negative. I am always concerned of being taken advantage of because I am a woman and would appreciate any additional confirmation.


From your follow-up, it appears you have an honest mechanic.

Your Answer:


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