Pioneer AVH-P4300DVD issue

[spooky]

Hey guys, a new member here looking for help. I have a Pioneer AVH-P4300DVD that has worked flawlessly up until I had to work on my truck and un-hooked the battery. When I hooked it back up, the unit won't bring up Maps, Google Maps or Youtube on the screen...it stays black, but I can hear the sound. I can still get Netflix and music is fine......

I've tried to sync my iphone 4S to see if that would help...I've turned on the video in the "aux" section and turned off the background. I'm at a loss here.....any ideas?

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