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i have a 1983 mercedes 380sl.
car starts , after driving , and stop engin, it will not start, after wating 15 to 20 minutes it will start

I have a 83 Mercedes and the power windows will not work. I have measured the power at the fuses (with the car running) and have no power. Is there a relay or another breaker/fuse to check. I tried to find a schematic on the web but failed to find one. Thanks for all help.

the odometer and heater dont work, why?

I have a 1998 CLK320 with 65,000 miles. For the first 20-30 minutes after starting the car, when the car is in drive but I am completely stopped, the car has a very loud idle and strong vibration. As soon as I step on the gas or put the car into park or reverse, the noise and vibration stops. After 20-30 minutes it stops and idles normally with no vibration. What could be causing this? I am getting a little nervous, on some days the vibration and noise is really bad. Thanks