Hi,
I have recently installed a 4200NEX into my 2013 Ford Fusion. It required purchasing and installing a Metra Turbo Kit that interfaces the car to the HU. My issue is, when I attempt to play a DVD, sometimes I get the video and sometimes I do not, regardless of my parking brake being engaged or the transmission being in or out of "PARK". (I always get audio) What I do get onscreen is the "Startup Warning" with a grayed out "OK" button.
What makes it hard to diagnose any problem is when something works sometimes and not others, when no known changes have been made. I have checked the wiring