When I start the car, the touch screen always displays the map. I want it to display either the home screen or the audio screen. I can't figure out how and the manual isn't helpful.

 

Mine always returns to the last screen I had on when I shut the car off which is usually SiriusXM. No idea how that got set up, though.

 

Tap "Navi" on the bottom of the screen, then tap "Cancel Current Destination"and confirm.
It will now start with whatever was on the screen before you turn it off.
I make it a point now to always cancel the destination once I'm done with the navigation.

 

No option to cancel the destination. I gave up and yanked the SD card and put it back in, and it fixed things somewhat. Now it resets to whatever it was when I turned the car off. But when I turn off the audio before I shut off the car, it reverts to the map.

 

I think it's "Cancel route" or something. Top right corner of the first screen after tapping "Navi".