[boardtek]

I had a 12volt cell phone charger "burn up" whilst plugged into the back of the center console arm rest.

Immediately after, I got multiple system failure notifications, which align with symptoms of a "bad alternator".

The rear heated seat buttons will not stay on anymore when you push the button. The light stays on for 1/2 a second & then turns off, even when you hold the button down for a few seconds.

I replaced the fuze that was blown for the rear 12volt receptacle & have checked for other blown fuzes & cannot find any.

I replaced the alternator & replaced the BMW relay #6136-6901469 also.

I still get intermittent power surges & "dynamic drive malfunction / transmission error / etc." errors at random. Some days everything is great & no issues. Other days, the car idles up & down a little bit, which seem like "power surges".

I had ZERO of these issues before the cell phone 12volt charger burnt out.

Any ideas of the best route to troubleshooting this (besides going to the stealership) would be greatly appreciated.

Thanks,
boardtek