I have a 95 525i. When I close my sun roof, the back driver window starts to open (This happens if I hold down the sun roof button). Then when I roll that window up, the driver side window goes down (While holding the back window button up), so when you roll that one up, the sun roof pops open again.
Is this something common or no? And what are your ideas on what's happening here? Because the only place I've seen this is when people install window regulators for those fancy alarms where the windows roll down when you unarm the alarm