Thanks to anyone with any ideas on this.  Recently had all four tires replaced.  Shortly thereafter the TPMS light came on.  There was a slow leak in one of the tires, I took it back to the Tire shop where they (for free minus the balancing charge) took the tire off and resealed it.  Pressure is now holding steady but TPMS light is on again.  My gut is telling me its a bad TPMS sensor (Pressure on all four tires are perfect) or they didnt replace one when replacing tires.  That particular model doesn't seem to have a recalibration button nor can you do it through the main computer.  My scan tool isn't high end and doesn't offer the option.  Do I just take it back to the tire place (National chain) or is there another fix that I am unaware of.  I'm thinking either needs to be recalibrated or sensor is bad?  

Thanks for anyone's thoughts! Love this community