Hi folks, I have this '90 560SEL that has had this problem since I bought it a couple of years ago.

If I have the drivers door open and also my foot is on the brakes, then the buzzer will sound. If I close the door OR take my foot off the brake the buzzer stops. A few times the buzzer has started and stopped in a rythmic(sic) pattern and the engine will slowly die(removing my foot or closing the door will let the engine start right up with no ill effects).

I am afraid I'm going to break down one of these days because of this. What could this be? A bad ground?

Thanks for any comments any of you might have.

100% normal. relax

__________________
MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

Thanks, it makes sense when you think about it. I wish I could fix the caster joints in such an easy manner.