How To Bleed Anti Lock Brakes? [Guide]

Generally, in the case of an ABS vehicle, bleeding has to be done exactly like any other vehicle. Hit the pedal, press the system, open a bleeder, close the same bleeder, and repeat. In general, brake systems with lock-resistant brakes in most vehicles can be bloated as usual, providing that no air has entered the ABS modulator component.

The regular bleeding methods will most probably clear the line of any unsought air if the only part that was changed is downstream (calipers, wheel cylinders, brake linings, or lines). But you may have to use the special procedures in some of the cars. Learn how to bleed anti lock brakes in this article.  

Why Do Brakes Have To Be Bled?

It’s a braking fluid that works when you push your vehicle brake pedal. Your leg motion moves a dive into the brake master cylinder that pumps fluid into and out the brake lines. The fluid exerts pressure on the brake pads to squeeze and slow down the braked discs in your car (or to transfer the brake shoes into the bucket contact).

If the air has entered the system, then it can cause the following things to the braking system-

1. Spongy Brakes

In most current automobiles, power brakes are standard and use brake fluids to work. Hydraulic force is delivered to the brake pads when you push the brake pedal. They then slow down or stop the car by pressing the pads in the braking rotors. Compared to the brake fluid, the air is substantially less thick.

This means it compresses too easily when air is in the lines. Your brakes will seem excessively soft or even spongy when this happens. It will result in poor braking action.

2. Crossion Issues In The Braking System

Two things occur in the case of moisture in the hydraulic fluid: a lower boiling point of the fluid causing the breakdown and a rubber formation inside the system which may impact seals, pistons, and hydraulic component bodies.

There is a leak that can lead to the air in the system, but one thing you need to keep in mind when you observe signs of rust on the hydraulic brake inner components. In the longer run, it will eventually destroy the system.

3. Abnormal ABS System Working

When sensors are polluted with scrap or metal shavings or dirty brake fluid, the most prevalent ABS problems will develop. Disturbances also arise when the sensor cable is damaged which results in continuity or not. Check physically all wires and brake sensors first when you have a fault in the ABS.

How To Bleed Anti Lock Brakes?

Sometimes, an ABS modulator or a hydraulic component such as a pump/motor or a master cylinder will have to be substituted for certain systems. If this is needed, you will be prepared for the work. This page provides an overview of certain techniques, instruments, and procedures necessary for these jobs.

1. Gravity Method To Bleed Brakes

The simplest single brake bleeding method is gravity. Attach the shaft to the bleeder, open the shaft, and watch the old fluid of the brake and the air flowing through the Aqua Virgo water pipeline on your way to Rome. The cheap Bleed-O-Matic type configurations work fine.

There is hardly much braking fluid in the little bottle, but it helps to avoid the reservoir from running out accidentally. For a simple reason, the magnet makes it simple to stick the bottle. This is a simple step for how to bleed anti lock brakes.

2. The Pump Method

Gravity does not always catch up for whatever reason and the two-person approach can take up where gravity fails. One person is sitting in the driver’s seat and pumping the brake pedal as the other fractures the bleeding screws. Pressurize. Hold. Repeat. Hold. Bleed.

Loud callouts like pumping it up or pressing it down and holding it down might make a garage or driving path sound like a Waffle House on Sunday morning, but a two-person operation is a tried-and-true approach to quickly blow out the brakes.

3. Bleed ABS Module With A Scan Tool

A very important step in the whole how to bleed anti lock brakes procedure. Select the scan tool for the Automatic Bleed Procedure. The scanning tool energizes the ABS solenoids and cycles them for one minute in the BPMV. Following this, the scan tool will tell you to bleed every wheel. The pump runs and the release valve cycles for one minute during that stage.

When everything is installed, the ABS module must be programmed. Depending on the manufacturer, this technique will change a little bit.

4. Vaccim Pull To Finish

The intention is to produce a vacuum that sucks the fluid brake and the air into a container out of the bleed torches. A hand-operated vacuum weapon is an appropriate alternative, particularly if you already have one. With all brake bleeding devices, this Mighty-Vac unit has tampered with fresh vinyl tubing.

First, link up the adapter for blue screws, hoses, and a container for catching. Then draw the vacuum, and fracture the screw of blood. The operation is difficult as the air is occasionally placed around the bleed threads and a bubble-filled tube is created. The vacuum bleeding ensures complete air evacuation.

How Much ABS Brake Bleeding Cost?

Depending on the type of fixing to be carried out on the ABS module and the labor cost the cost might vary from $340 to $1100. The usual bleeding is between $75 and $100, and you can think that mechanical bleeding will bleed your brakes. Depending on the brand, model, and year of the car which you drive or where you take it for the work, the costs will vary somewhat.


So it is very easy to understand how to bleed anti lock brakes. You should never skip this process as it ensures the proper working of the braking system and prevents any further chain of damage. The ABS system can save your life in an emergency. If you still have any doubts, then comment down below.

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