I have a 1992 400E and after anywhere from a month to a couple of months the windows and sun roof just stop working. They will stay inoperable for anywhere from a week to a few weeks, then they begin working again. Unfortunately everytime they have acted up has been during a period I have been too busy to get out the old volt/ohm meter and start tracking.

Any suggestions I hope?

Thanks

Bof

There is a "convenience" computer under the REAR seat bottom on the drivers side that operates ONLY the windows & sunroof..would imagine that computer is the problem. start by checking the electrical connections on that computer.

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Great lead, thanks; I'll do that tomorrow. I should see something despite the problem having done another temporary resolve today.

bof

It is amazing. M.B. Doc is truly an expert. First lead and hit, no guessing around.

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1996 E320 since 1/16/08, 171K miles as of Feb 2011

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1989 300CE - R.I.P. Dec 29 2007
Other MBs (sold): 1992 300E-24 - 1979 350SLC - 1984 230E - 1990 300CE