2013 centurion enzo sv230. The lower 1/4 of my touchscreen no longer responds to touch input. I can't empty my pro port ballasts or turn on cruise control as a result. I was hoping there was some recalibration I could do, but I can't figure out how to get into dealer settings. I know the code is "91" but I can't figure out where to provide the code. How do I get to a screen where I can provide the code to enter dealer settings? I tried turning on the ignition while holding one of the 4 buttons next to the touchscreen, but it just says "Booting..." forever and never boots.