All, my newly acquired 1991 Mercedes Benz 560SEL windshield wipers mostly only work on full speed and they don't park. Sometimes they do work at slow speed but move very very slowly. I thought it was the replay, but I swapped it out with a new one without luck.

Has anyone experienced this before?

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With best regards

Al

you need a new wiper motor but it wouldnt hurt to check the wiper circuits and the multifuntion switch either

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2001 E55

2001 E320 Sedan

2001 Subaru Legacy

2006 SLK280

2016 Subaru Outback 3.6

He probably does not need a new motor. I had the same problem with the SL and it turned out to be the multi-function switch. It was a very easy replacement.

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1985 500SL Euro w/ AMG bits 130k
1984 300SD Turbodiesel 192k
1980 240D Stick China 188k
2001 CLK55 AMG 101k
2007 S600 Biturbo 149k Overheated Project, IT'S ALIVE!!!

Tyler could also be correct. I had the same issue like you but It turned out to be a wiper motor instead of the Multifunction switch, Just make sure you check all circuits and diagnose the problem accurately.

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2001 E55

2001 E320 Sedan

2001 Subaru Legacy

2006 SLK280

2016 Subaru Outback 3.6

Thanks, I also suspect the combo switch, I bought a new one some weeks ago but have not bothered installing it as i very quickly bought a 560sec right after this car which i have been driving on a regular bases. I have some time off coming up and will replace the switch. The odd thing is that I switched relays and it fixed the problem for a very short while, then it came back again.

__________________
With best regards

Al