Sony Personal Audio Docking System - iOS7

This would seem to mimic the problems I related in my post from two days ago-

After updating to iOS7 I find that my iPhone 5 has connection issues with the audio system in my 2013 Mercedes ML350. When first plugged in the phone switches the audio system to the iPhone input and begins to play iTunes which it always did, however it resets the connection every ten seconds or so making the interface unusable. It also takes over the audio system so that when I switch to radio for example, which with iOS6 put the iTunes player in pause and switched to the radio, now the radio will play for a few seconds and then when the phone connection resets the phone takes control away from the radio.

Not sure if this is an iOS7 bug or if something in setup needs to be different. It is very annoying however and because the phone takes control I can no longer charge it in the car.

Basic phone functions all work through bluetooth and are fine.

I too have the same problem, however rebooting it has not solved the problem. Any other suggestions?