We currently have a 2013 Cmax Energi with no navigation. Over the past few weeks, when playing music using a USB thumb drive or hard drive, I get some sort of error flashing on the screen (Comes up and leaves too quick to read), then the system shuts off, reboots, says it is doing scheduled maintenance, then works OK for about 10-15 minutes before it does it all again. I do not have the problem if nothing is plugged into the USB ports and I am playing the CD player or radio. I just downloaded so