Well, actually the closing assist on our 95 e320 wagon works fine, but the interior lights in the back do not turn off when the gate is shut. I don't think it is switches in the rear doors because I have swapped these. How are the rear lights turned on and off when the tailgate is opened / closed?

Also, the rear lock on the gate stopped actuating all the other door locks. It still locks and unlocks the rear gate, plus it turns the alarm on and off, it just doesn't make all the other doors lock and unlock. Any ideas?

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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