I have a 2012 VW GTI and when I first bought the car my Bluetooth worked through my radio to play Pandora. Recently, I have been getting a message saying that my Bluetooth audio is "not compatible"... my friend has an iPhone 4 and it connects just fine. The weird part of this is that my phone works with voice calls and whatnot but no audio can be played. Since his phone plays audio there is no issue with the car.. any ideas?