I've done a search for this specific problem, with no results. I have an '84 300D. The problem is that the parking brake indicator light remains on, even after the parking brake has been disengaged. If I raise the parking brake pedal up underneath with my foot a few inches, the light goes off. I adjusted the brake at the rear wheels to tighten up the slack, but this didn't cure the problem. Any solutions to this problem would be appreciated.