I am having this same issue on my BMW F30 and other Bluetooth devices. My car will show that the phone is connected, but I have to go to the phone and hit play becuase hitting play on the car will do nothing. I have a similar issue with my beats head phones. When I turn them on my phone will connect to my headphones, but if I hit play there is no sound. I have to disconnect my head phones and reconnect everytime to hear music.
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