I have a 2001 slk 320 and the seats both quit working at the same time. I have checked the fuses and they are fine. I dont believe it would be the motor seeing as they both quit working at the same time. I have heard there might be a relay somewhere that controls them but i am unable to find it. Any help would be appreciated. Thank you very much.

 

Sorry, i don't have electric seats so i can't help. Good luck though