no audio/sound
 

Hey guys i have 2009 Q7. I start my car and the radio came on but i they was no audio coming from i can hear my parking sensor.

I've seen this on my once or twice. Did the Audi Ctl + Alt + Del trick to restart the MMI and that seemed to fix it.

With the car on hold down these buttons for 5 sec.
Setup + Dial Knob + Top right button next to the Dial Knob

You can google "reset MMI" or "force reboot MMI" and that should get you some pics and youtube videos on how to.