1992 300TE W124 4Matic Question
 

Light is on all of the time. On occasion, it blinks. We have it in "Test" mode.

Where are the easiest places to start to find out the problem, and where do I go from there?

If it ends up being a ridiculously expensive repair, can I just drive it in "Test" with no issues?

Thank you for your time.

That would be great. How can I know that's the problem?

sorry wrong thread lol

Does the light blink when you turn the steering wheel or just randomly?

The most common cause of malfunctions in this system is the brake light switch and the OVP.

Randomly and not very often. I have only seen it blinking three times.

Is the brake light switch under the brake pedal? Is the switch to be swapped out or is there another problem with it?

What's an OVP? :o

Thanks! :cool: