Why Is My ABS Light On? What It Means and What to Do

Your car’s dashboard lights are built to keep you informed — and safe. If your ABS light comes on and stays on, you might be wondering: why is my ABS light on, and is it dangerous? While your car can still stop without ABS, it won’t stop as safely — especially in wet or slick conditions.

In this blog, we’ll explain what the ABS light means, what causes it to turn on, and how Round Rock Auto Center can help you fix the issue before it becomes a bigger problem.

What Is the ABS System?

The Anti-lock Braking System (ABS) helps prevent your wheels from locking up during hard braking. It allows you to maintain steering control while slowing down — especially helpful in rain, snow, or emergency stops.

When your ABS light turns on, it means the system has detected a fault and disabled itself. Your brakes will still work — but without the safety of anti-lock control.

Why Is My ABS Light On? What It Means and What to Do

Top Reasons Your ABS Light Is On

1. Faulty Wheel Speed Sensor

Each wheel has a sensor that monitors its speed. If one fails, the ABS system won’t be able to detect lockup and may shut down.

Watch for:

• ABS light on

• Traction control light also on

• Inconsistent braking or stability issues

We’ll scan your ABS system and pinpoint which sensor is faulty or dirty.

2. Damaged ABS Wiring or Connectors

The wiring that connects sensors to the ABS module can become damaged by road debris, salt, or moisture — especially near the wheels.

Look for:

• ABS or traction light after driving in harsh conditions

• No other brake warning signs

• Visible wiring damage near wheel wells

We’ll inspect and repair any corroded or broken wiring to restore full function.

3. ABS Module or Hydraulic Pump Failure

The ABS module controls the pump and valves that manage brake pressure. If it fails, the entire ABS system shuts off.

Symptoms include:

• ABS light on constantly

• Clicking or buzzing sounds from under the hood

• Inconsistent brake pedal feel

We use advanced diagnostic tools at Round Rock Auto Center to test modules and pumps for electrical or mechanical issues.

4. Low Brake Fluid

If your brake fluid is too low, the ABS system may detect pressure problems and trigger the warning light.

Check for:

• ABS and brake warning lights on together

• Fluid level below the “MIN” line

• Possible fluid leak or worn pads

We’ll top off or flush your brake fluid and check the system for leaks.

5. Blown Fuse or Internal ABS Relay Failure

Sometimes, the issue is electrical. A blown fuse or failed relay can interrupt the ABS system and trigger the warning light.

What to expect:

• ABS light comes on randomly

• May reset after restarting the car

• No other brake-related symptoms

We’ll check all fuses, relays, and connections as part of a complete ABS diagnostic.

Is It Safe to Drive With the ABS Light On?

Technically, yes — your standard brakes will still work. But without ABS, you risk losing control during emergency stops or slippery road conditions. It’s best to get the issue checked and fixed as soon as possible.

Final Thoughts

Still wondering why is my ABS light on? From faulty sensors to wiring or fluid issues, ABS problems are easier and cheaper to fix when caught early.

At Round Rock Auto Center, we offer expert ABS diagnostics and repairs using factory-grade tools — so you can stop with confidence, no matter the conditions.

Schedule your ABS check today and keep your brake system performing safely.