2000 bmw M5 radio appears to be locked up
So, has anyone else experienced this problem? I'm using a 2000 M5 with the normal radio and a BSW ipod kit. Everything was good for four months, and now my radio appears to be locked up. I can't turn it off, and the volume knob is the only one that works. Other buttons do not function. I can't change the radio stations, but I can on the steering wheel (only to the preset ones). I tried unplugging the battery to do a "*******" reset, but it didn't work.
Any assistance would be highly appreciated.