I ran into the same issue. I went online and read the following answer that worked for me. I disconnected the negative battery wire in the trunk behind the removable panel. I left it disconnected for a couple of hours and started the car and the USB ports had been reset. I heard you can touch the negative and positive battery cable's together for an instant reset, but getting to the positive one wasn't easy. The great thing is that the radio settings weren't lost and I can use my Apple Car play now
