I just bought a used 2014 MKZ Hybrid. When I first go the car the "startup" sounds were going through the radio speakers and sounded great. All of a sudden it stopped doing that and all I get is the beeping sound which sounds like its coming from the dashboard somewhere. Same for the backup beep sound when you get close to obstructions when in reverse. How do I get it back to sounding like it did when I first go it. And this is not in my head, I've had the car a month now and this all just started yesterday.