LOL at TPMS on a jeep.
Check all four tire pressures plus your spare(if equipped).
Press. should be 35ish. not sure at what psi the alarm comes in at. Was it cold outside? sometime ambient conditions mess w them.
Anyway, if it doesnt clear after all pressures are verified, and youve driven some, drive it off a cliff. Or take it to the dealer.
or read your owners manual on the part about TPMS