E430 Strangest Brake light electrical problem - PeachParts Mercedes-Benz Forum

accatlett · #1 07-18-2008, 09:08 PM

The strangest thing has happened; instrument cluster says light failure when I hit the brakes. Ok – usual brake light or contact failure, I cleaned everything up but still got the warning.

I happened to try to further trace the problem this evening as it got dark and found that with the LIGHTS OFF if I hit the brake pedal the brake lights come on and so does the FRONT driver’s side marker light and running light and the warning inside. Foot off the brake and they all go out again. With the lights ON all three brake lights are on constantly.

Any ideas where to turn first to trace this?

thanks
2002 E430 4Matic