I have a 2013 Corolla. The problem I'm having is that the radio turns on and off at random intervals. When it does, the sound keeps playing but I lose the functionality of all the buttons. The only way I have found to work around this is to hold down the power button to restart the radio. But even in the same trip, the radio can turn on and off again, where I lose the control of the buttons again. Anybody have a fix for this?