2021 1500 Laramie, loaded to the gills including 12" UC and power steps, 5,000mi.
Same situation described above--side step manual deployment as well--dead dawg come mornin'.
I'll take it in tomorrow and will post back what/if any answer they offer. Don't expect much or wait for it. We had massive issues with our 2019 electronics which they never fixed over 20+ times in service.
Edit: For the record, I just tried some of the suggestions above while the vehicle is charging. Opened and closed all of the doors (waiting until the step had fully deployed and retracted each move). O&C the tailgate. Pressed the 'screen off' UC button.
Returned in 5 minutes without the key-fob, and the dash display and UC were off. I'm debating whether to waste my time taking the vehicle in, expecting "Well, we can't find it. Let us know if it happens again." My guess is--as suggested by others--this is just
another of those things on a heavy accessory and electronics vehicle which makes it's brain go stupid. From our 2019 and unrelated issues with our 2020, I also suspect these will be more things they'll not address with current vehicles--IOW, you're SOL--and may or may not on subsequent years.
K2