A door control module/actuator may fail. Our technicians recommend finding an expert to repair them. Taking the door trim panels off requires expert knowledge because they can break and the pieces are very expensive.Google+
Car Problem Reports
Mercedes-Benz S500 Door Control Modules May Fail
Mercedes-Benz S500 Problem
Average Mileage: 118,232 mi (96,000 mi - 136,698 mi)
Visitor, 2005 Mercedes-Benz S500
The door locks, mirror and trunk release stop working from the key pad.
door control module on drivers side stop working so seat adjustment and heated seats are not working, did not fix as of yet. module is 500 buck not including labor or diagnositic which they alway pinn on to cost. Will have to wait to fix that shit too.