TPMS reading rear tire pressures incorrectly

[Another JR]

My 2021 3500 cclb srw has a placard rear tire pressure of 80 psi for max axle load. It seems to put up the warning when a rear tire sensed pressure drops below 60 psi for longer than some amount of time. I had my RR tire give a warning at 59 psi on a recent morning. The LR was at 60. Driving around raised them to 62 but the RR warning remained for the next few days. I had to inflate it to around 65 before the warning cleared, and then lower it back to 62 cold where I wanted it (to be just above the warning level). 

[msmanuel]

Just a quick update. I received the relearn tool from Amazon and went through the relearn process. That set everything back to operating properly. It's been a couple of days now and still OK.