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Part 1 of 6: Locate the ABS module
Electronic braking systems are controlled by the electronic brake control module, or EBCM for short. The EBCM reads all of the braking system’s sensors and activates the ABS or traction control system when it detects it is necessary.
The anti-lock braking system or quite popularly known as ABS control module prevents your vehicle’s wheels from locking while you are driving. Driving with the bad abs module can bring in many disadvantages to the car’s performance and will also degrade the efficiency of the engine.
A bad ABS module can behave erratically, making your brakes lock up even under normal braking. You might even notice unusual behavior from the brakes, like random clicking noises. These can also indicate ABS module failure.
The average cost for ABS control module replacement is between $916 and $943. Labor costs are estimated between $101 and $128 while parts are priced at $815. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location.
It is often one or more sensors, or the wiring to the sensors. The most common ABS problems occur when sensors become contaminated with debris or metal shavings. Malfunctions also occur when sensor wiring becomes damaged, resulting in intermittent or no continuity.
If your ABS Warning Light turns on frequently, your mechanic can try to reset the ABS control module (like resetting a computer) to see if it fixes the problem by: Disconnecting the positive cable from the vehicle battery. Holding down on the brake pedal to drain the vehicle’s electrical system.
The first thing to do to bleed the ABS module is to start the car or turn the key to where the battery is on. Then you need to depress the brake pedal. It is important the system is under pressure before doing this to help force the air out. After the brake pedal is depressed to loosen the brake sensor.
Without a scan tool, open the front bleeder screw at the modulator. There are two, so be sure you open the front one. Then bleed the modulator. Close the screw, then bleed both front brakes starting with the right one first.
Bleeding brakes by gravity Then you might just want to let the force of gravity do the bleeding for you. This method works for nearly all modern cars, and anything as long as the master cylinder is up high on the firewall, above the level of the wheels. Close the bleeder screw and top off the master cylinder.