1995 BMW M3 Nothing works since service!

Just spent about $6,000 to have my baby undergo some plastic surgery as well as 65000-mi physical. I had the driver's side door panel replaced as it was separated from door frame. Other work was on tires, engine, shimming taken care of, routine stuff.

Since getting car back, the driver's seat's automatic adjustments won't work, neither windows nor sunroof will open, and all sorts of alarm lights stay on after car has been running a bit. First, airbag light stayed on; now it doesn't stay on as long, but the break-fluid light is constantly on even tho break fluid is fine; now break pad light comes on and break fluid light is off.

Could all these problems possibly have occurred from just having door panel replaced? Of course, I'm going to contact the dealer re these problems but wanted a little bit of knowledge before talking with them. The only thing electrical I can figure out they came near was the door panel replacement.

Thanks for replies and assistance!
Allie