Weird thing just happened. TPMS warning light goes off flashing like I'm about to die while I'm driving to the store. Started maybe 2 minutes before I pull into the parking lot. I get what I need, stop at the gas station to put in a bit of air to get it to 39 psi where I normally have it. It's only down 2 or 3 psi, driving home it's screaming at me the whole time... flashing the low pressure light and dinging the dash for a tpms fault. Whatever I'm going to 4wp to get the tires checked out anyways, i don't care.
I go back out there because I realize I need some supplies for a project I'm working on; turn the truck on to drive to the hobby store and it the light or alarm never comes on once. Complete mystery to me. Never once happened in 10 years of ownership.