Mine has done that periodically. Light comes on, I pull over, visually check, and also check with pressure guage including spare tire, all is good. Hit the road again, light goes out eventually. I do have to say though, the light has come on when I've had a flat. But I agree, the crying wolf gets annoying.I have had very bad service from the TPMS- it is a POS in my opinion. I have complained to the NHTSA as mine randomly shows the light and then goes off w/o changing the pressure. It doesn’t tell which tire is down even if it is working. Several dealers have looked at it and declared it fine. They say it will go off if I drive it. 6,000 miles later it might. I finally lowered my pressure to 60 as then the TPMS is than on all the time which is better than having it on and off for no reason. You know the story of the boy who called wolf, right?
Sorry I can’t really help.