ABS, TCS And Brake lights stay on

**cwk269** · 10-28-2009, 10:00 AM

The tree lights stay on constantly and the TCS switch is not functioning. Any ideas? I was told on of the ABS sensors could be bad causing this. Any help would be apprecitated.

**bigrondownhiller** · 10-28-2009, 02:25 PM

Most likely one of the abs sensors. I have had the abs inop/tc come on but not the brake light. You can try cleaning the sensors. If that doesn't help you need to go to the dealer or someone with a tech 2 scanner to get the abs codes.

**Z28boy2000** · 11-01-2009, 06:18 PM

had the same problem, cleaned the sensor and poof their gone

**35th-ANV-SS** · 11-01-2009, 06:35 PM

I agree with above. Check to make sure all your connection to all your ABS sensors are secure and that the sensors themselves are clean. Your TCS light will always be on if your ABS inop light is on. The TCS cannot function without the ABS working. Once you fix your ABS issue, I bet your TCS light goes away also.

Good luck.

**DaddySS** · 11-02-2009, 12:41 AM

Also check the wiring in the rear - mine was rubbing due to the car being lowered and broke one of the wires.

**joedude02** · 11-02-2009, 03:04 AM

i put on et streets and the tire was 26' tall. that set mine off unless i lowered the air pressure. probably not your issue, but that's what caused mine.

**01 SS Vert** · 11-02-2009, 06:17 AM

When mine came on, I bought an ABS scanner and it was the entire control module that bad. I thought it was a speed sensor, but they turned out to be fine. I bought a used module for under $60. I love the scanner!