What is an ABS speed sensor?
An ABS speed sensor is a part of the anti-lock braking system (ABS) in your vehicle. It’s a metal ring that connects to each of your front wheels and rear wheels. It can be integrated into your wheel hub assembly or steering knuckle, depending on the make and model of your vehicle.
The ABS speed sensor detects the speed at which your wheels turn. It consistently sends signals to your vehicle’s computer to assist the ABS system in determining whether or not to engage traction control during dangerous driving conditions.
When should I replace the ABS speed sensor on my car?
The average ABS speed sensor should be replaced every 30,000 to 50,000 miles. The most common signs of a faulty ABS speed sensor are:
ABS warning light: An illuminated ABS warning light on your vehicle’s dashboard could be the result of various things, such as a poor battery or a sensor wiring issue. However, another common error could be a failing ABS speed sensor. When your ABS speed sensor breaks, the ABS light, check engine light, or traction control light may turn on, alerting you of a potential problem.
Loss of anti-braking system: Your vehicle’s ABS system consists of several components, including the ABS speed sensor, ABS control module, valves, and pump. All of these parts work together to assist you in controlling your vehicle in emergency situations. If your ABS speed sensor fails, it can stop your entire ABS system from working, decreasing your chances of coming to a safe stop when putting pressure on your brake pedal.
Loss of traction control: When your ABS system is disengaged, your vehicle will lose traction and stability control. As a result, your wheels will have trouble gripping on slick and icy roads, making it difficult to brake and complete a stop action.
Faulty speedometer: While this symptom doesn’t happen often in modern vehicles, it’s possible for your speedometer to stop working when your ABS speed sensor is broken.
If you notice any of these symptoms when driving, it’s best to proceed with caution and then contact a mechanic to have your ABS speed sensor examined and replaced.
How often should an ABS speed sensor be replaced?
ABS speed sensors are designed to last for years, only needing replacement every 30,000-100,000 miles. However, since ABS speed sensors are subject to high mechanical pressure and can be affected by road debris, it’s possible for them to deplete earlier.
If you are experiencing ABS speed sensor failure, take your vehicle to the closest automotive repair shop to have it inspected by a professional mechanic.
Can I replace my ABS speed sensor myself?
Yes, you can replace an ABS speed sensor on your own. However, you’ll need to remove the tire, brake calipers, and brake pads in order to replace the ABS speed sensor. Plus, the new sensor will only work if it’s in exact alignment with the tone ring and wheel bearing. If you’re not confident of your ability to do those things—or if you don’t have the correct tools—bring your car to a licensed professional.