I put the summer wheels and DRs back on Black Betty today. I did the manual TPMS relearn process and all 4 wheels honked the horn as expected.
When I aired them up I could see the correct PSI in the DIC for all 4 wheels, however when I start the car it reads "Check LF tire pressure. Use inflator kit in trunk" and then the same message cycles through all 4 wheels. If I hit the check mark button on the dash the messages go away until the next restart.
My annual NC state inspection was due so I asked my local shop to see if their TPMS programming tool could re-caliberate them. They tried and got the same results - PSI reads on the DIC and all 4 TPMS respond to the tool, but we can't make the messages stop on the DIC.
Is there a control module somewhere that the TPMS report to / check in with that could be not working as expected?
Could that be part of the BCM?