Wheel Speed Sensor

ABS wheel speed sensors are used to monitor the speed of a vehicle’s wheels and send this information to the ABS computer. The ABS computer uses this information to determine if a wheel is locking up or skidding during braking, and if so, it will pulse the brakes to allow the wheel to continue to rotate and prevent skidding.

ABS (Anti-lock Braking System) wheel speed sensors are typically mounted on or near the wheel hub assembly. They are designed to measure the rotational speed of the wheel and send that information to the ABS control module, which uses it to determine if a wheel is locking up and needs to be slowed down.

The symptoms of a bad ABS wheel speed sensor can include:

  • Warning light on the dashboard
  • Brake warning light or ABS warning light
  • Reduced braking performance
  • Unusual noises while braking
  • Vehicle pulling to one side during braking
  • Reduced stability control or traction control
  • Difficulty in keeping the vehicle in a straight line while braking
  • Failure of the ABS system to engage during a panic stop.

It is important to note that a malfunctioning ABS wheel speed sensor can cause other issues with the braking system, such as reduced braking performance and increased stopping distance. It is always recommended to have a proper diagnosis and repair done by a professional mechanic.