sorry for the delay................
Greetings...... "Hi, I'm Don (aka MOLurch) and I look forward to helping you!"
There is a TECH Bulletin on this:
91 08 53
October 30, 2008
It states to:
Use VAS scan tool
Disconnecting the power supply of the satellite tuner usually resets the tuner, and the MMI system is operative again for an unspecified period of time.
Therefore, do not disconnect the satellite tuner
Disconnecting the satellite tuner will cause the MMI system will be operative again for an unspecified period of time but will not address the root cause.
Scan vehicle with GFF. Generate a 00 printout and perform a ring break diagnosis from 19 - Gateway. Save the printout to a memory stick.
Submit a Technical Assistance Center ticket. Attach log with ring break. This procedure is mandatory for all Audi Dealers.
So, the fix is going to be with the Dealer, as there is no customer input without the use of Dealer Scan Tool for latest updates.
IF you disconnect to "reset" the reset may not be for very long
My goal is to provide you with excellent service - if you feel you have received anything less, please reply back as I am happy to address follow-up questions.
Kindly rate me when you are done.