Bought a new 22 ram rebel in March with 8.4 in display. 1st issue I have is rear passenger speaker not working. One on order with no arrival date from fca. That's not a big issue. A month or so later and now sometimes when I start the truck the radio will lock up and make a humming/scratching noise at the volume it was last at and the radio will reboot and work fine. Seems to mostly happen after driving, shutting off for a little bit, then restarting. Anyone else have this issue?