Mercedes CLK wiper malfunction

I had a similar wiper problem on my Opel. Check the wiper motor relay. A bad relay can act like a bad wiper switch. Also, check the turn signal stalk, since the wiper switch is part of it. A problem there could affect both. Is the wiper blade assembly moving okay, or is something blocking it?

Thanks for the quick reply. Can you explain how to check the wiper motor relay and what to look for to see if it's working right? Also, would a bad turn signal always cause problems with the turn signals, or could it just affect the wipers?

To check the relay, look for continuity and the right voltage. A multimeter helps. A bad turn signal doesn't always affect the turn signals; sometimes it only affects the wipers. Given the error code and how complex the system is, a technician might be best. The estimated cost of 95€ sounds fair for checking and fixing it.

Thanks for the help. I took it to a technician as you suggested. It was a bad connection in the wiper switch. The repair cost 95€, just like you thought, and fixed the problem. Thanks again for your help.