Help with new (to me) Grand Cherokee Dash Warning Freakout

Just bought a 2023 Grand Cherokee L Overland, 33k miles a few days ago. Love the vehicle, everything I ever wanted. My honeymoon phase was smashed this weekend when I turned it on, a bunch of warnings came up (disabled blind spot, service power steering, disabled forward collision, ect). I drove it for about a half hour and the next time I started it, it turned to just a check engine. Eventually in another half hour, started it again, no lights at all. I'm going to take it to dealer anyway to document it and see if they can find anything, but I'm a little worried since the warranty is up soon. Could it have been a fluke? Bad battery? Sign of a serious problem? I'm just wondering if this is a common thing and any advice for how to proceed with the dealer (Its a ford dealership, but a mopar dealership is physically next to them with same owner). I really don't want to deal with undoing the purchase, I love it otherwise.