Sorry for the long post, I hope I can get some help to save some debugging time. I'm new to MB/diesels and am still learning. Also thanks in advance for any advice!

1. Rear window defroster – When I click the button to turn on the rear window defroster, the light in the switch brightens up and eventually goes back dim. Problem is, the rear window is still fogged up. It has never worked since I purchased the car about a month ago. I have gone in and replaced all fuses, hoped I might get lucky with an easy fix. Any suggestions on a place to start debugging?

2. Wobble @ take off – sometimes when I start driving, the car seems to wobble back and forth a little. Once I get a little speed, the wobble subsides. Any ideas on a cause or should I just not worry?

3. Sound from under rear of car – When I let of the accelerator peddle I hear what I can best describe as a rubbing/grinding noise. It is not loud, if I have the window open or radio on, I cannot hear it. I do not hear the noise as I accelerate (as best one can in a 240D ). Again, any ideas?

4. Cruise Control – I have searched and found much info on cruise control issues. I would still like to put this question before the user community. When I got the car, I pressed the cruise lever to engage the cruise the first time. The car accelerated, but would not hold speed. The next time I pressed the lever, nothing happened. Later, I had the vales adjusted. I decided to try the cruise again. Accelerated and would not hold speed. All tests between my first test and since the valve adjustment result in, nothing happens when I press the lever to engage/accelerate. And I know it is a 240D and I’m sure it’s not accelerating!

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1981 240D, Auto Trans, 160k miles -- CRASHED!