Two problems related to wiring have been reported for the 2010 BMW 528. The most recently reported issues are listed below.
The insulaton of the wiring to both my headlight and parking light lamps is flaking off in small and large pieces leaving the copper wiring exposed.
I received a displayed message there was a malfunction with the rear lamp. When checking the tail light assembly and wiring, I noticed the connector on the tail lamp assembly was melted (plastic) where the brown ground wire connected. The male/female connector parts got so hot that the plastic connector was melted where the ground wire connects. This was on the drivers side, but it is likely the passenger side would have the same problem. The heat generated to melt the plastic connector could cause the ground wire to burn and the brake/rear lights to fail. With a failure of the rear lights, an accident could happen.