Hi,
Got an A6 Avant 45TFSI last week and no issues until yesterday apple car play stopped showing, phone still connect and can stram on bluetooth but won't display car play. It coincided with me both installing a sim car and registering with the my adui app etc but did work for a short while after that. I have tried removing the phone from the car system and then starting again and car play is ticked in the bluetooth setting on the phone and the phone has the most up to date firmware etc.
It is booked in to Audi but not for 4 weeks and in case it is a simple fix I thought I would ask here, thanks. I did do some searches first and couldn't find an obvious topic that covers this so hope it's not a duplication.