Hi Barbara, yes... driving to a meeting a few months ago, the warning indicator (!) came on. I pulled off the highway and checked all four tires - pressures were normal in all four. The warning light stayed on the rest of the day, despite several locking and unlocking cycles, and attempts to reset the TPMS. Got home, put the XC40 in the garage, attached the charger, and went to bed. Next day it was perfect, and it's never happened ever since, several months and 1,000+ miles later. Apparently it repaired itself. Go figure....My tire pressure warning light came in yesterday. I filled up my tires and looked like that solved the problem but the warning light came back on. This morning I checked my tires and the pressure looks fine yet the warning light is still on. Has anyone dealt with this issue? Thanks.