Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hi, my name is***** wipers are activated by the front SAM unit. The SAM is located under the right front seat. Most likely water has found it's way into the front SAM as well. I've attached a picture below.
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First you need to access the SAM and confirm that it is wet. It might fix itself if it dries out. Otherwise you will need to replace the front SAM. Fuse 100 in the fuse and relay box located at the right front of the engine compartment is for the wiper motor.