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 CL500 Door Control Modules May Fail
Mercedes-Benz CL500 Problem
Average Mileage: 103,500 mi (57,000 mi - 150,000 mi)
Door Control buttons work intermittently. Also the locks and the trunk release are affected when it gets cold. They fail to respond to the remote control.
Visitor, 2002 Mercedes-Benz CL500, 150,000 mi
nothing on passenger side works