2021 Ford Ranger XLT Sport 4x4 Crew Cab

Backstory: I started my truck with the app before leaving the house. Unlocked the doors, got in, drove to Taco Bell, shut it down. Got out, ate, Came back out, unlock didn't work... tried it, nothing.

Tried lock, nothing... smacked key fob (in case battery lost connection), no luck. Odd, but not unheard of. Used key to unlock vehicle. Got in, stuck key in ignition, tried to turn on. No response. Totally weird. However, accessory device through 12v worked...

Well, this sucks... Maybe low voltage?

Checked app. No trouble... Tried remote start on app... Started right up. stuck key in, moved to run. No issues. Drove home, no issues, got out, shut door, hit lock button, doors locked. Hit unlock, doors unlocked... Now it seems to be fine...

Any clue what could have caused this? Will it happen again?

Thanks everyone for the insight...