I have a g37x 2010. I purchased it used and for the first couple months the USB port in the center console worked perfectly fine. Over time I would make a turn or go over a bump and the music would stop playing/charging my phone so I thought it was possibly the cord, so I replaced the cord. Not the issue. Now the USB does not work at all. Help.

 

If you are still under warranty take it back to the dealer. I have a 11x Sedan, and sometimes it plays my usb and other times it wont read it at all. Since I'm still under warranty it is covered.