A wheel speed sensor, also called an “ABS sensor,” is part of the Anti-lock Brake System (ABS). It is located on the tires (near the brake rotors for the front tires and in the rear end housing for the rear tires).
Do rear wheels have speed sensors?
Modern vehicles have four wheel speed sensors: two front wheel speed sensors and two rear wheel speed sensors. That is, each wheel of your car has a wheel speed sensor.
What does a rear wheel speed sensor do?
The wheel speed sensor is responsible for relaying the wheel speed to the ECU so that it can tell the ABS system how much pressure to safely apply. When the wheel speed sensor is broken or not working as it should, one of the first things that are affected is the ABS system.
How do you know if your wheel speed sensor is bad?
Symptoms of a failing Wheel Speed Sensor
Warning lights. We get it. Speedometer doesn’t work. This is a bit of a rare symptom, but can occur, especially in older vehicles. Anti-lock brakes stop working. Traction control and stability control stop working.
How do you know if you have a bad wheel speed sensor?
Common signs include the ABS Light coming on, ABS not working properly, and the Traction Control Light staying on.
Is ABS sensor the same as wheel speed sensor?
The ABS sensor is also called the wheel speed sensor or ABS brake sensor. Since all the wheels do not turn at the same speed, the ABS sensors report the speeds of all the four wheels to the ECM, based on which the ECM determines if the wheels are locking up.
Does wheel speed sensor affect speedometer?
Most cars depend on signals from the wheel speed sensor to adjust their speedometer readings. A faulty sensor can result in inconsistent or erratic speedometer readings. Alternatively, it can result in no readings at all. This doesn’t mean that your car would simply stop working and you can’t drive it anymore.
Is a wheel speed sensor an ABS sensor?
Wheel speed sensors are often also called ABS sensors as they were used in vehicles for the first time when ABS was introduced. Wheel speed sensors can be designed as active or passive sensors, depending on how they operate.
Will a wheel speed sensor cause brake problems?
A malfunctioning wheel speed sensor does not normally impact regular brake functioning — only the anti-lock braking system. If your ABS warning and check brake lights are both illuminated on your dashboard, there is a serious problem with your vehicle.
Can you drive without wheel speed sensor?
If the wheel speed sensor isn’t working, it won’t send any information to the ECU when there’s a problem. The ABS system won’t know to begin working and you can lose control of your vehicle and cause a crash.
Can you drive with a broken speed sensor?
Can you drive with a bad speed sensor? In general, it is unsafe to drive a vehicle with a broken wheel speed sensor. The car’s computer will not be able to determine the speed that your vehicle is traveling, so it might apply the brakes at a faster rate than necessary or increase the engine power.
Where is the wheel sensor located?
Wheel speed sensors are often called ABS sensors. You’ll find them mounted on the axles of all ABS equipped vehicles. Look for this sensor on your wheel hubs, near the brake rotors. You’ll find the rear wheel speed sensor mounted on the rear axle housing or wheel cylinder.
How long does it take to change a wheel speed sensor?
Remove the old speed sensor. Replace it with a new one. The connector is in a plastic box hanging on the wheel well. 20 minutes.
How much does it cost to replace a wheel speed sensor?
The average cost for wheel speed sensor replacement is between $204 and $250. Labor costs are estimated between $62 and $78 while parts are priced between $142 and $172. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.
What happens when a vehicle speed sensor goes bad?
One of the most common signs of a bad speed sensor is abnormal automatic transmission operation. If the VSS is faulty, the transmission may exhibit symptoms such as delayed shifts, hard shifts, and limited gear operation.
