I just got my car back after replacing the bumper. When I remove the key, all lights on the dash stay on, the headlights stay on and the brake lights stay on. The key fob stopped working and the button to lock/unlock inside the car also stopped working. Here is a short video.
I tried reprogramming the key, no luck. Also disconnected the battery overnight as other threads I read suggested, also no luck. Any help is appreciated.
Car is a 2005 E46 M3 if that makes any difference.