Quote:
Originally Posted by Joe Bauers
On my 1979 300TD wagon, I had the same problem. On the advice of an MB tech, I took out the wiper relay and banged it on my work bench. Put it back in and the problem was solved. That was several years ago. On the 123, the relay is located behind the instrument cluster; not sure on the 126.
Joe B.
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That's also a possibility.
The relay for the interval wipe control is on the far right side of the fuse box. It's the first relay at the front of the box.