Regarding my brother's '84 190D, the RR window sometimes will not go down or up. However, when it does this, by holding the switch and banging on the door, the window will then work. At first I thought it was a switch problem but I don't see how banging there would affect the switch up in the center counsel. He was using that switch to show me the problem. What do you guys think is wrong with it? When I get time I'll pull the door panel and clean that switch as well as clean the center switches, but I don't think that is the problem, what say you guys?

Thanks
David

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2000 Honda Accord V6 137k miles

1972 300SEL 4.5 98k miles

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