What Causes the “ABS Light” to Come On and Go Off?

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You are driving the car and suddenly the “ABS light” shows up on the dashboard. A wave of uncertainty and concern flows through the heart of drivers when the ABS light illuminates. You can easily remove the tension if you know how to fix ABS light on car with or without a scanner.

What does ABS Light Mean?

How to fix ABS light on car

The ABS light, or anti-lock brake system light, is a warning light on your car’s dashboard that indicates a problem with the anti-lock brake system (ABS). The ABS is a safety feature that helps to prevent your wheels from locking up and skidding when you brake hard on slippery surfaces.

It also affects other safety features in the car such as electronic stability control, traction control system, brake assist, FCW, and others. So it is important to fix the problem as soon as possible to avoid any major accidents.

what causes the abs light to come on and go off?

There are a few reasons why the ABS light might come on and go off. Here are some of the most common causes:

1. Faulty wheel speed sensor

Wheel speed sensors monitor the speed of each wheel and send this information to the ABS control module. If one of the sensors is malfunctioning, the ABS light may come on. This is a common cause of the ABS light coming on and going off, as the problem may be intermittent.

2. Low brake fluid level

The ABS system uses brake fluid to pressurize the brakes, so a low level of brake fluid can cause the ABS light to come on. This is because the system may not have enough pressure to operate properly.

3. Blown fuse

The ABS system is powered by a fuse, so if the fuse blows, the ABS light will come on. This is a less common cause of the ABS light coming on and going off, but it is still possible.

4. Problem with the ABS control module

The ABS control module is the brain of the ABS system, so if it is malfunctioning, the ABS light will come on. This is a more serious problem, and it may require replacing the control module.

how to fix abs light on car without scanner

You can fix the ABS light even if you don’t have a scanner tool. Here are the methods of fixing ABS light without a scanner.

1. Check the brake fluid level.

If the brake fluid level is low, add more brake fluid to the reservoir.

2. Check the fuses.

The ABS system is powered by a fuse, so if the fuse blows, the ABS light will come on. Check the fuse box for the ABS fuse and replace it if it is blown.

3. Inspect the wheel speed sensors.

The wheel speed sensors monitor the speed of each wheel and send this information to the ABS control module. If one of the sensors is malfunctioning, the ABS light may come on. Inspect the wheel speed sensors for any damage or debris.

4. Clean the ABS connectors.

The ABS connectors can get dirty or corroded, which can cause the ABS light to come on. Clean the ABS connectors with a cleaner and a wire brush.

5. Reset the ABS system.

Some cars have a way to reset the ABS system without a scanner. Check your car’s owner’s manual to see if your car has a reset procedure.

is it safe to drive my car with the abs light on

In general, it is safe to drive your car with the ABS light on, but It is especially dangerous to drive with the ABS light on in slippery conditions, such as rain, snow, or ice.

If you can, it is best to avoid driving with the ABS light on. However, if you must drive, please follow these tips:

  • Drive slowly and carefully.
  • Leave plenty of space between you and the car in front of you.
  • Avoid hard braking.
  • Be extra cautious in slippery conditions.

Here are some of the risks of driving with the ABS light on:

  • Increased risk of skidding and accidents: The ABS system helps to prevent your wheels from locking up and skidding, which can lead to accidents. When the ABS light is on, it means that the ABS system is not working properly, and your wheels are more likely to lock up.
  • Decreased braking performance: The ABS system also helps to improve your braking performance, especially in slippery conditions. When the ABS light is on, it means that the ABS system is not working properly, and your braking performance may be decreased.
  • Reduced safety: The ABS system is a safety feature that helps to protect you and your passengers in the event of an accident. When the ABS light is on, it means that the ABS system is not working properly, and your safety may be reduced.

How much does it cost to fix ABS light?

The cost to fix an ABS light can vary depending on the cause of the problem. Here is a general estimate of the cost to fix the most common causes of the ABS light coming on:

  • Faulty wheel speed sensor: $100 to $300
  • Low brake fluid level: $20 to $50
  • Blown fuse: $10 to $20
  • Problem with the ABS control module: $500 to $1,500

Frequently asked questions about ABS light

Check out the FAQs related to ABS light fixing.

How long can I drive with the ABS light on?

You can drive as long as you want until you get into slippery, snowy, and rainy conditions.

Can a low battery cause the ABS light to come on?

Yes, a low battery can sometimes cause the ABS light to come on. But you will have other problems such as dimming light, faulty air conditioning, and others.

Can worn brake pads cause ABS light to come on?

Yes, worn brake pads deplete brake fluid that can trigger the ABS light to come on.

How do I identify which ABS component is causing the issue? 

Use an OBD-II scanner tool to find the error codes and identify the components causing the problem.

If the ABS light goes off by itself, do I still need to have it checked? 

You should check the system even if the ABS light goes off by itself. There might be a problem that caused the light to come on.


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