Not sure if this engineering mode has been posted before. Sorry about poor quality, benign tremors, not Parky's. Only touched version info at the mo.

[Kithmo]

Got in to it, but chickened out on play other than the screen test..tapping the screen and going through the various colours..

I only pressed the version button, chickened out on everything else.
I have a similar screen on the Prius where one option called "vehicle signal check" shows the 12v battery voltage amongst other things.