2008 Jeep Commander Car turned itself off

Need more details than that. Do you mean the ignition switch turned itself or the engine simply stalled? If it stalled, what happened next? Did it fail to restart and the vehicle had to be towed back to the dealership? Did you simply restart the engine and it ran fine?

The most common thing with Chrysler products is low idle speed causing stalling when you approach a stop sign. That will occur after disconnecting the battery or letting it run dead because the Engine Computer loses its memory. It has to relearn "minimum throttle" before the computer will know when it has to be in control of idle speed. To meet the conditions for that relearn to take place is real complicated. Drive at highway speed with the engine warmed up, then coast for at least seven seconds without touching the pedals.

Often batteries will run down when a vehicle sits unused on the dealer's lot for more than three weeks. A simple jump-start is all that's needed to get it started, but the relearn procedure still might be needed.

I believe the ignition switch turned itselfoff, I just turned it back on and it was fine.

That's what all the problems are now with the GM recalls. It's due to the weight of other keys on the key ring pulling on the switch. That doesn't apply to Chrysler products.

There was a recall for some Chrysler models in the mid '90s for this same thing, but I doubt that's what's happening here. That repair involved popping two rubber plugs into a pair of holes in the back cover of the steering wheel. Those were access holes for the mounting screws for the air bag. If you hit a bump just right while turning, a key could hook in one of those holes and turn the ignition switch off.