Originally Posted by dcohio
I have similar issues with my Droid RAZR MAXX HD and my 2012 Subaru Outback. The ONLY workaround I have found is to adjust the music volume slider in settings/sound/volumes after bluetooth is connected and audio is playing. I haven't found any common link between downloaded audio vs streaming. I have had issues with ICS and now JB with the bluetooth on the MAXX HD. My previous Droid RAZR worked with the same bluetooh system just fine.
I'm having the exact same problem with my Droid RAZR and 2013 GLK350. Only with the default 'Play Music' application, does the car bluetooth system seem to realize that music has started playing and not act like the phone player is paused and report music metadata to the player. In Pandora, Slacker, Audible, Amazon player and any other app I've tried it's as if it the phone is not sending a proper 'I'm playing music now' cue to the car. As stated in the post above, if I go into Settings/Sound/Volume and just touch the Music volume slider the audio then plays and the music metadata the car displays is the last notification ringtone that phone has played. I've even tried putting a shortcut or widget from AudioManager on one of my home pages to adjust the volume so that I can more easily tap that instead of going through the Settings menu but this doesn't work either - whatever the bug is, the only workaround is an actual notification playing on the phone or the 'manual' volume adjustment. After the volume adjustment is made however, I can skip to the next song or chapter or whatever in the app I am currently using so it doesn't seem like the problem is in AVRCP. It is such a frustrating problem because it seems like it shouldn't be that hard to solve. I've had this problem in ICS and now the JB update that Verizon recently sent down. I was hoping the problem would be fixed with the JB update but unforetunately not.