Why Your ABS Light Is On and What It Means

Seeing your ABS light on can be unsettling—it’s a clear sign your braking system needs attention.

The ABS, or anti-lock braking system, is one of the most important safety features in your car. If this light is on, your car is telling you there’s a problem that needs fixing.

Let’s break down what could cause it and why it’s important to act quickly.

What Is the ABS and Why Does It Matter?

The ABS is what keeps your wheels from locking up when you brake hard, especially in wet or slippery conditions. This helps you maintain control of your car and avoid skidding.

If the ABS light is on, it means the system isn’t working properly. While your regular brakes will still work, the anti-lock feature won’t, which can be incredibly risky during emergencies.

ABS warning light, damaged sensor. illuminated car indicator close up

Why Is My ABS Light On?

Here are the most common reasons:

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Low Brake Fluid
Your ABS relies on brake fluid to function. If the fluid level is low, the system can’t work correctly. This might happen due to a leak or worn brake pads.

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Faulty ABS Sensor
Each wheel has a small sensor that tracks how fast it’s spinning. If one of these sensors is dirty, damaged, or not working, the ABS system won’t get the information it needs.

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Damaged ABS Module
The ABS module is like the brain of the system. If it’s faulty, the ABS can’t function. This is a more complex issue that needs a mechanic’s expertise.

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Blown Fuse
A simple blown fuse can cut off power to the ABS, turning on the warning light. This is an easy fix but shouldn’t be ignored.

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Worn Wheel Bearings
Wheel bearings play a role in helping the ABS sensor do its job. If they’re worn out, the sensor can’t read the wheel speed correctly.

Why You Shouldn’t Ignore It

Ignoring the ABS light can put your safety at risk. Without the anti-lock system, your car is more likely to skid in an emergency.

Plus, driving with a faulty ABS can lead to further damage and more expensive repairs.

Addressing the issue early is the best way to keep you safe and save you money.

The ABS sensor lights up orange in the car dashboard.

What Should You Do Next?

If your ABS light is on, here’s what to do:



Check the Brake Fluid
Low or dirty brake fluid could be the cause.

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Visit a Mechanic
ABS issues are often pretty complex and require professional diagnostics.

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Act Fast
Don’t wait—addressing the issue early prevents further damage and ensures your safety.

Get Your ABS Checked by the Experts

Don’t wait until a small problem turns into a big repair bill. At Keys Road Auto Service, we specialise in diagnosing and fixing ABS issues. With over 30 years of experience, our expert mechanics use advanced tools to quickly identify and repair the problem, so you can drive with confidence.

Your safety is our priority. Book online today or visit our Cheltenham workshop for your next ABS inspection. Get peace of mind knowing your brakes are in expert hands—don’t delay!

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