When you open the driver's door, no front interior light. (I know this is the seatbelt relay.) But now, the rear lamps (there are 4 on the pillars) are having problems. If you leave the switch on the dash set to the position where the lights turn on when the doors open, the lights stay on all the time, even when the doors are closed! If the switch on the dash is set to off all the time, the lights do just that. And if it is set to "on" all the time, that works as well. I am thinking the problem is some kind of contact switch in the tailgate, maybe? The close assist works fine.

Thanks in advance

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2002 Mercedes-Benz E320 4Matic
1995 Mercedes-Benz E320 Wagon
2005 Land Rover LR3 V8 SE
1999 Audi A8 4.2L quattro