96 E300D Right Rear window does not work-Switch, regulator, motor all tested good. New Ignition switch, K40. I switched wiring with left door and all worked on right door. Is there a relay between the switch on the door and the Central Contol Unit as I hear it click when I push the switch but nothing happens. If I buy a new CCU does it have to be programed to my car if it is the same part number,210-820-39-26. It is in back of the K40 closet to the firewall in the engine compartment on the passenger side. What else should I check???
Thanks for any help,
Ron