I know there is a combination of keys for the 8.4 system I have in the Challenger.
This is what I know about the 8.4 system. I don't know if any of this will work for the 5.0 (or the 6.4).
- Press and hold both the temperature-up (red arrow) and temperature-down (blue arrow) buttons at the same time, for 5 or so seconds, you are presented with the "Engineering Menu."
- Hold the up, down, and front defrost buttons simultaneously for about 5 seconds and then you are presented with the "Dealer Mode" menu.
- Hold down the up, down, and Browse/Enter buttons simultaneously for about 5 seconds. That puts you into touchscreen calibration mode.
- Hold down the up, down, and rear defrost buttons simultaneously for about 5 seconds. That will write a screenshot (1.2MB .bmp file) to the flash drive in the console USB slot.