MMI quit
 

Hi,
Curious, I have my 2010 A4 Prem Plus with Nav since mid August. Last week I was in a 4 floor covered municipal garage, programed my GPS to return to my hotel, backed out of the parking spot...rear view camera stayed on for quite a while because I was going very slow.
When I exited the garage the whole MMI shut down...no GPS, no music, nothing worked.
At the next stop light I shut the motor and restarted and the system started about 3 mins later.
Did anyone experience this? Was it because my rear camera stayed on too long, or
was it the covered garage?
This happeden only once.

Any comments.