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My TPMS lights were doing the exact same thing, but what I did ,was raise my tire pressure by 2 psi in each. No more light. Of course weather has warmed back up now, guess time will tell.

 

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Like others, I keep my tires around 36 psig and have never had the TPMS light come on. I'm wondering if the system is sensitive enough that, when the tires are at or near factory recommended pressure, the warning light will come on. Your comments would indicate that this wasn't the case before and is a new issue.

Interesting!

 

ALso, it is worth mentioning, that any issue that 2-5 psi might cause such as the light coming on when cooler, you should always check with different gauges. I knew someone that was a total nut about air pressure because of something he read. And he kept a gauge in every car, and checked every week. It ended up that the 3 gauges he had would read something like 28,30, and 35 on the same tire. Never trust 1 gauge, or 1 tire pump, if you care about how exact the reading is.