I have a Nexus 4 and it is paired with my Q50 (with all options). I have no problem using bluetooth audio streaming and talking over bluetooth through the car. However, I noticed that when I use Google Maps on my cell phone, no audio is coming from the phone or the car. Does the car need to be in BTA mode to get the audio? I was hoping that I could listen to the Radio/CD and still get Nav directions from my phone over the car speakers.