Install a new ABS sensor by removing the old sensor first. This requires lifting the car enough to remove the wheel, locating the old sensor and removing the speed control actuator. Once the old sensor is removed, pull the old sensor free and replace it with a new one.
To replace the ABS sensor, gather the following tools:
- 10mm socket with extensions and driver
- Phillips head screwdriver
- Vise grips
- Floor jack
- Jack stands
- Brake cleaner
- Lug nut wrench
- Universal pry bar or flat-head screwdriver
Although many models may be different, the steps below are a basic guide to replacing the rear ABS sensor on many types of automobiles.
- Loosen the wheel
- Remove the wheel
- Remove the speed control actuator cover
- Take off the actuator
- Unplug the ABS sensor
- Prepare for a new sensor
- Insert the new sensor
- Route the sensor
- Replace the speed actuator
- Mount the tire
- Reprogram the ABS sensor
Using the lug nut wrench, loosen the lug nuts, but do not remove them.
Jack up the vehicle and place it on the jack stands. Remove the wheel by taking off the lug nuts.
Remove the screws holding the speed control actuator cover in place. Take off the cover.
Take off the speed control actuator by removing the bolts holding it in place. If necessary, loosen them just enough to move the actuator out of the way.
Unplug the ABS sensor. Remove the bolt holding it in place by using the socket, ratchet and extension. Pull out the sensor.
Prepare the hole for the new sensor by cleaning it with a wire brush and brake cleaner. Use a paper towel to clean the inside of the hole, removing any metal bits or rust.
Place the new sensor in the prepared hole and tighten it with the bolt removed in the above step.
Route the sensor wires along the inside of the fender and attach them to the sensor grommets.
Replace the speed actuator and secure it using the screws. Replace the cover.
Mount the tire. Replace the lug nuts, lower the car and tighten the wheel.
Reprogram the ABS sensor according to the automobile manufacturer's directions.