I've had an iPhone 4 for the past two weeks and it was working flawlessly with my 2010 G37 sedan nav system. Could access playlists throug USB connection, could stream music via bluetooth, etc.

Two days ago when I plugged in the phone via USB, the ipod playlists would show up on the screen, I could select a playlist, I could select a song, but when I hit play the screen would revert back to the original option screen (playlist, album, song, etc.) and no music would play.

Not sure why I started having problems after two weeks. Any ideas?

 

There's a TSB that just came out for the 2010 models for Nav, iphone/ipod updates. I bet this will solve your problems. Call your dealer and ask about it.

 

Thanks much