How does the ABS control module work?

Asked By: Eniko Klaussen | Last Updated: 2nd May, 2020
Category: automotive auto safety technologies
4.5/5 (89 Views . 15 Votes)
The ABS control module is a microprocessor that runs diagnostic checks of a vehicle's antilock braking system and processes information from wheel-speed sensors and the hydraulic brake system to determine when to release braking pressure at a wheel that's about to lock up and start skidding.

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Likewise, what are the symptoms of a bad ABS module?

Symptoms of a Bad or Failing ABS Control Module

  • Unresponsive brake pedal. In certain cases, depending on the model of vehicle, when the ABS module fails, the brake pedal may become unresponsive.
  • Brake pads require more effort to push.
  • The ABS Light is on.
  • The brakes are locking up.

Also Know, does an ABS module need to be programmed? The ABS module will need to be programmed once everything is installed. This procedure also will vary quite a bit depending on the manufacturer.

Secondly, what causes ABS module to fail?

Rarely is a malfunction the module or ABS itself. 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. False feedback causes the ABS to trigger when it shouldn't, or not function when it should.

How do I reset my ABS system?

How to Reset an Anti-Lock Brake Light

  1. Disconnect the positive cable from the car battery, and then hold down on the brake pedal to drain the car's electrical system. This will reset the car's central computer.
  2. Change the ABS sensor if the light comes back on.

24 Related Question Answers Found

Can you drive without ABS module?

Yes, you can drive without ABS but be careful. The ABS control module in these cars also control front/rear brake bias.

How do you get air out of ABS module?

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.

Do I need to bleed ABS module?

Normal bleeding procedures can be used to bleed the individual brake lines provided no air has entered the ABS modulator. But if air has entered the modulator, the system will have to be bled using a pressure bleeder and scan tool: Connect the pressure bleeder to the master cylinder reservoir.

What happens when the ABS control module fails?

Signs of a failing ABS module
Illuminated warning lights: A failed ABS module may trigger many warning lights, such as the ABS indicator, red brake light, traction control light and more. Loss of antilock braking ability: An ABS module that has gone bad will usually prevent anti-lock braking from working.

Can an ABS module be repaired?


ABS/EBCM Module Repair & Return (Like New, Only Better)
This is a repair and return service where the module is rebuilt, tested, and shipped back. MyAirbags will rebuild your original part to make it as good as new! You will not need your ABS module coded to your vehicle VIN because it is the original module.

Can a bad ABS module cause transmission problems?

Yes, ABS does affect the transmission. Namely, the vehicle speed sensor is part of the ABS system. This is where your truck reads road speed. The transmission tuning is also based on road speed, and controls when the truck upshifts, downshifts, and when to lock the torque converter.

How much does it cost to fix the ABS system?

Costs to repair anti-lock brakes
ABS wheel sensors cost anywhere from $100 to $200 each, while ABS control modules run from $200 up to $600 apiece. In addition, expect to pay between $80 and $150 per hour for labor and anticipate at least an hour to an hour and a half of work.

How much does it cost to fix ABS module?

The average cost for an ABS control module replacement is between $865 and $924. Labor costs are estimated between $100 and $127 while parts are priced between $765 and $797. Estimate does not include taxes and fees.

Can ABS cause spongy brakes?

Most likely your car will be equipped with some sort of ABS (Anti-Lock Brake System.) When your ABS system malfunctions is can also cause spongy brake pedal. Your ABS system is designed to allow the driver to maintain more control of the car in a high speed stop.

How do you diagnose a bad ABS pump?


Brakes Locking Up
However, if your brakes are locking up under normal driving conditions this may be caused by a faulty ABS pump. If you start to experience some strange behaviour from your brakes or notice random clicking noises or pumping of the brakes, these can be the first indicators of this problem.

Can bad rotors cause ABS light to come on?

Worn pads can also cause the ABS/Brake light to illuminate. My prediction is that if the rotors are THAT warped, then by the time you turn them they will be below or close to the minimum thickness and will need to be replaced anyway. Brake fluid is fine, pads are almost brand new.

Where is my ABS control module located?

Locate the ABS control module. It is generally installed in the engine compartment or in the frame rail on the driver's side. If the module is located in the latter position, you will need a jack stand to lift the vehicle to continue replacing the module.

Where is the ABS module located?

Where is the ABS Control Unit Located? Typically, in most modern vehicles the common design requires the ABS control unit module to be installed and mounted within the engine compartment. It can also be present in the frame rail of the left side of the vehicle or typically the driver's side.

What is an IVD module?

IVD is a function of the ABS module. It uses ABS and traction control functions together to help steer the body of the vehicle to match the driver's demand. IVD systems with only that ability are also referred to as stability assist. Roll Stability Control (RSC) is an IVD system that also aims to limit body roll.

How do you reset the ABS light on a Ford?


Keep pushing and releasing the "Set" button on the DIC control panel until "ABS" is shown. Hold the "Set" button for about 5 seconds to reset the light and turn it off. Turn the key in the ignition to the "Off " position and remove the key.