I am getting some front end body work done on my 1994 E320. After it was put back together the drivers side headlight wiper started running backward i.e. wiping down toward the bumper instead of across the headlight. The body shop couldn't figure it out so they took it into the local Mercedes dealer.
The dealer examined it and says there are 2 passenger side wiper motors on the car but I am told that the wiper motors were not changed out. Is there a way that the polarity could have gotten switched on the motor?
Any other ideas. Thanks