My radio screen constantly keeps rebooting or going on and off. every time i hit a bump in the street or on the highway it goes off, then i hit another small bump and it comes back on. sometimes i don't have to do a anything, just be sitting parked, and it goes out, which in turn, i can not use my backup screen cause it's not there! that makes it dangerous cause i can not see cars or pedestrians behind me. as you know, my radio screen is key to other features that i can not use because of the constant rebooting or going off and on.