I just use the steering wheel.
Also, I guess technically that grab handle is removable but not sure you would want to do it. The highlighted cover just pops off so that you can get to the two bolts that secure the handle/a-pillar trim piece to the a-pillar. The handle is typically integral to...
The upper left icon looks like a spray bottle so my guess is a screen lockout mode for cleaning. For the one below it my only guess is some sort of valet mode?
I find it interesting they have a button for the Traveler rear lift gate. Not sure what the point/use would be with the swing out tire carrier that has to be opened manually first. The Terra would make sense for the tailgate jut not sure about the Traveler unless they somehow make the tire...