Why is my Cadillac ABS Light On?

In this guide, you will learn what it means when Cadillac ABS light stays on, common problems, and how to troubleshoot the Anti-lock Brake System (ABS) system. 

If your Cadillac ABS light stays on, the anti-lock brake system has detected a problem. Anti-lock brakes, traction control, and stability control will be disabled.

Symptoms

Cadillac abs light on
  • ABS Light Stays On,
  • Longer stopping distance,
  • Service Stabilitrak Warning Message
  • Service traction control light ON
  • Traction control and stability lights ON

When your ABS fails, you may also get a warning message asking you to service ABS, Traction Control, and Stabilitrak.

Why is my Cadillac ABS light on? 

The most common problem that triggers the ABS light to stay on in a Cadillac vehicle is a faulty ABS wheel speed sensor. Cadillac vehciles have four ABS wheel speed sensors, one for each wheel. To find out which one is faulty, follow the steps below to read the codes from the ABS module. 

Possible problems that can trigger the ABS light on a Cadillac include:

  • A faulty or dirty wheel speed sensor,
  • Defective steering angle sensor,
  • Damaged wires,
  • Bad ABS module 
  • Blown fuse
  • Bad ABS relay

Any of these issues can trigger the Cadillac ABS light to stay on.

How to Read and Reset Cadillac ABS Light

To find out why your Cadillac ABS light is on, you need to read the ABS module's fault codes. This procedure can be performed by your Cadillac dealer, a local auto mechanic, or yourself.

In this guide, we are going to show you how to read fault codes from the ABS module of your Cadillac. Once you get the codes, you will need to fix the related problem before you can reset the ABS light. 

What you will need

Procedure

Follow these instructions to read and reset ABS fault codes on Cadillac vehicles 1996 and newer. This method works on models such as ATS, CTS, XTS, CT6, XT5, Escalade, SRX, DTS, STS, BLS, XLR, and Deville.

  1. Park your Cadillac in a safe area where you can work. Locate the Cadillac OBD-2 port under the dashboard.
  2. Connect your OBD-II scanner.  Read Cadillac ABS BRAKE light codes
  3. Turn on the ignition. All Cadillac dashboard lights should turn on but do not start the engine. If your Cadillac has START/STOP button, press it twice without pressing on the brake pedal.Turn on Cadillac to read erase ABS light 
  4. Allow your Cadillac OBD-2 scanner to connect to the Engine Control Unit (ECU). This may take a few seconds. ABS light troulbeshooting Cadillac ATS, CTS, XTS, CT6, XT5, Escalade, SRX, DTS, STS, BLS, XLR
  5. Select Cadillac from the menu. Manually select the Anti-lock Brake System menu. Cadillac ABS Problem
  6. Read codes from the Cadillac ABS module using a Level 2 OBDII scanner such as Launch Reader.  
  7. Once you fix the problem that was discovered in the previous step, come back to the ABS menu and clear Cadillac ABS codes. Select Cadillac

Don't use a generic OBD-II scanner. A generic scanner will display no error codes even if the ABS light is on. For this procedure, an ABS Scanner is needed. 

If your scanner cannot communicate with the ABS module, it is possible that the ABS module is defective and it needs to either be replaced, which can be an expensive repair, or use a third party that provides Cadillac ABS Module Repair Service on eBay.

Comments

Visitor, April 6, 2018
It really is dangerous! I always advise people to get this checked asap. You don't want a problem to occur if you are on the highway. However, I am curious about your issue? Did you finally get a replacement or did you just get your sensors replaced?
Visitor, April 6, 2018
My Cadillac CTS abs light turns on randomly. My brakes will stop working and are very hard to press. I took it into a mechanic and he said that I need a replacement master cylinder. The brake sensor is the problem and from what I've read, most people with this car have this same problem. The problem will occur while driving, ABS light come on, Brakes stop working. Very dangerous.