Welcome to the forums. Phones are normally paired with cars as a phone and media device, options chosen during pairing. It sounds like yours may have missed the phone. Remove the pairing from both the car and phone. Re-pair and pay attention to choices during that process, be sure you take both. If still a problem, your car audio system may not support all the functions of the A5. Contact your dealer and see if they have a firmware update for your audio system.
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