I've had my '88 300E for almost 2 years now and for the first year i didn't replace the seat adjustment switches because I didn't need to. I got fed up with everyone in the family complaining about not being able to adjust the seat so I got to it and in doing so discovered that you CAN adjust the seat as long as the door was OPEN. Weird. Is this just a simple crossing of wires somewhere along the way? Any advice would be much appreciated.