Originally Posted by wdimagineer
There was a slight revision to the Active Sound module but the change was minor and not something that seems to have changed the behavior you've described. The M5 Technician Training Manual doesn't mention complete disablement of the audio system.
Yes we only found out by "accident" that one can unplug the ASD module without any (at least initial) side effects. Ie audio system fully functional , no codes/errors etc.
I'd think BMW does not officially documents/endorse disabling/removing ASD hence they won't support an official procedure for it