Why would this happen? The RNS-e works fine, sat nav works etc, CD shows as plying and the time lapse on songs shows, but no sound. Not even a buzz. Checked with vag com and cant see anything obvious, it did at first say Navigation - Not registered, but i don't know if it was like that before battery was removed. I have now recoded the CAN for navigation and that error has gone, but still no soundd from any speaker in the car.