How to Troubleshoot an ABS System

An ABS system is an essential part of a car's safety equipment. The ABS--antilock brake system--helps to control and stop your car in emergency situations by preventing the wheels from locking and skidding. It's impossible to steer when you're tires are locked, and it takes longer for a skidding car to come to a stop. From time to time small problems may occur with an ABS system. A driver who is acquainted with the feel and sound of her car's ABS can quickly realize when something is not working correctly. The first step in correcting a problem is to locate the source of the problem. Troubleshooting your vehicle yourself can help to pinpoint ABS issues, some of which may be simple enough for you to correct without having to pay a mechanic.

Instructions

1

Replace your brake fluid if your brake pedal fades when you apply pressure to it. The brake fluid may be contaminated with water. It's possible, too, if you've had recent brake work done, that the brake fluid may not be the correct type for your vehicle. Replace old fluid with a fresh supply. Avoid getting air into the ABS controller when changing the brake fluid.

2

Determine whether your ABS warning light or your regular service brake warning light is on. The ABS light can come on for various reasons. You'll need to have the system scanned to identify the codes so that the problem can be determined. Your regular brakes will still function, but the ABS will be temporarily disabled.

3

Check for low brake fluid level or for leaks if a red brake warning light appears on your dashboard. Also, when the brake fluid becomes low, air will enter the system, causing poor braking conditions.

4

Determine if there are any unusual odors. If while driving you smell burning or smoke, there may be broken or loose parts inside your brakes. You'll need to repair the issue as soon as possible.