That might be the feature to that tells you have inflated the tire enough. That feature is documented my the 2019 Jeep manual.This happened to me today for the first time. I've had my 2020 Cherokee for about a week now and I went to the gas station to air up the tires. I left the Cherokee running while I hopped out to air up the tires. As I was airing up a tire, I heard my horn honk lightly. I thought to myself well that was weird but kept airing up the tire and it honked again. At that point I was thinking what the heck?? I stopped with the tire and got inside the driver's side and noticed the emergency flashers on. I tried turning them off with the button and no luck. Turn the Cherokee off and on again was the only way I could get the flashers to turn off. The temp here is 35F-40F today and I have the standard plastic key (insert to start), no remote or push button start.