My TPMS this week has been acting very weird. Monday on the way to/from work, the TPMS light was flashing for about a minute or so after starting the jeep, then shut off. The next day and a half, the TPMS light was on again, but a steady on. Somehow yesterday after work, the TPMS came on at startup for its usual system check, then shut off. Today, the light came back after startup as a steady on. Tires are not lower than usual, but starting to think something is really messed up w/ the TPMS. Any ideas?