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Q: Where Is the ABS Sensor Typically Located?

A: The anti-lock braking system (ABS) sensor measures the speed at which the wheels of your vehicle rotate. It sends the data to the engine control module to help the computer determine which wheels are locking up.

The ABS sensor is usually in the wheel hub. However, older vehicles typically have this sensor outside the wheel hub (on the steering hub or differential housing). It’s often paired with the ring gear, which is usually mounted on the brake rotor and brake drum.

Tips on How to Access the ABS Sensor

Accessing the ABS sensor involves using a jack to lift the vehicle. Be sure to park your vehicle on a flat and even surface away from busy places like roads before your start. After this, you must disable the car battery because the ABS sensor runs on electricity. Wear protective equipment like safety glasses or goggles.

Once you’re well-protected, you can disconnect the negative battery cable. Don’t neglect this step. If you forget to do this, you might accidentally create sparks with any metal tools you use. Not only can this hurt you, but you can also cause the battery to short-circuit and destroy itself.

See also  Symptoms of a Bad Wheel Speed Sensor and Other FAQ

Because the location of the ABS sensor varies from vehicle to vehicle, your best bet is to consult your owner’s manual. More often than not, the manual will have specific instructions to help you find and access the ABS sensor.

You can watch this video to get an idea how to replace your rear ABS sensor:

About The Author
CarParts Research Team
Written By Research Team

Automotive and Tech Writers

The Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

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