Originally Posted by ctuna
Was it one of the new HU's that include bluetooth and usb internaly?
I would see if you can reporgram the head unit first it may take care or
I don't believe so, It was a radio out of a 2008 M3. I just keep thinking it's a most problem, and that's why the amp wont turn on. The voice command also does nothing. I will try coding the radio, and see what that does.