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2012 C300 Sport 4Matic and 2003 CLK430 Cabrio
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1,919 Posts
Discussion Starter #1
My left turn signal keeps coming on for no reason! It will stay on for 20 min then just go off and be normal. Other than replacing the multi switch, is there anything to clean or adjust?
 

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2005 Mercedes-Benz S500, 1982 300SD, and about 4 other parts cars in rubbermaid bins in the garage
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306 Posts
Maybe a bad SAM?

But the multsw is most likely the culprit.

Have an IDE scan it with STAR to see if the request for the left turn signal is coming from the multsw to the SAM or if the SAM is just tripping.

Also clean your water drain in the pass side towards the cabin of the car.
 
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