I have a non-idrive 328 and today I have an unexpected issue. I was steering through a parking lot and holding the volume decrease toggle. The radio was unresponsive but eventually the volume reduced. Then I tried to switch from AUX to radio and the screen blanks out and then goes back to AUX. Then I tried to turn off the radio and it wouldn't turn off. All of the buttons are unresponsive; on/off, volume, menu, everything. So I turn off the ignition and remove the key and the radio display is still illuminated with 'AUX' and the ignition button is still lit. Engine is off, lights are off, but the ignition is still lit and the radio display is still lit. If I pull the fuse for the radio will it come back on or will it think that it's been stolen and stay dead? Thanks for any help.