Dang Cd player (DEH-P7300)

I have a pioneer DEH-P7300 when i drive two things happen under the button display on the right three bars pop up and turn the bass up when i go above 50mph or i hit a bump.It's driving me crazy i can't listen to music with this and also the damn thing is so hard to tune.

check all the connections on the cd player something could possibly be loose, and 50mph just happens to be when ur car shakes enough to cause the problem