Before you take it into the dealer check the battery voltage. I had the same type of problems with my 2015 and while perusing the net I discovered that it's a symptom of a failing or low batter. Mine went into the categories and then the touch screen wouldn't work and I had to reset it from the settings after restarting the truck. Sometimes it worked and sometimes if didn't. So I went out and bought a cheap battery tester and when it acts up I can see if my battery is run down and run the truck till it gets charged up. What's odd is that the dealership said they'd never heard of this issue.
Hope this helps or at least puts you on the right path.