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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.

Related Articles:
  • Replace ABS Wheel Speed Sensor Toyota Camry 2012-2017 XV50
  • Diagnose Warning Lights Mercedes-Benz GLA-Class X156 2014-2019
  • Replace ABS Wheel Speed Sensor Mazda 3 2013-2018
  • How to Find Why ABS Light On
  • Run Flat Inoperative, ABS, ESP Malfunction on Mercedes-Benz
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© 2015-2025 YOUCANIC®, owned by Bohotina LLC. All rights reserved. YOUCANIC® delivers expert automotive guides and DIY solutions empowering vehicle owners to diagnose and fix car problems with confidence. While we strive for technical accuracy, our content is for educational purposes and cannot substitute for professional mechanical advice. Use of this site constitutes acceptance of our Privacy Policy and Terms of Service. Need help? Contact our dedicated Customer Service team.

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  • HOME
  • SHOP
    • UCAN-II Pro Car & Light Truck Scanner
    • Semi Truck & Heavy Equipment Scanner UCAN-HD-A
    • High Capacity Jump Starter RB6000A
    • Battery & Charging System Tester
    • Adapters
      • 12+8 FCA Chrysler Dodge
      • BMW 20 Pin Adapter
      • Mercedes 38 Pin Multiplexer
      • DOIP Adapter
    • Check Coverage
  • REPAIR RESOURCES
    • Find by Vehicle
    • Video Library
    • Trusted Repair Shops
    • Pro Manuals
    • Code Library (DTC)
    • Parts Lookup
    • Glossary
  • TOOLS
    • VIN Decoder
    • Tire Comparison
    • Used Car Inspection Checklist
    • Brake Pad Wear Calculator
    • Battery Group Finder
    • Torque to Horsepower Converter
    • Trip Cost & Fuel Calculator
    • Battery Charging Time
    • 2-Stroke Oil Mixture Calculator
    • DIY Repair Savings Calculator
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