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tpms altitude temperature

  1. TPMS: altitude/ ambient temp ???

    I took the truck up to the Tenn mountains this past week. TPMS light came on the 1st day after arrival. Checked PSI in all 5 tires = OK. Light remained on entire time while in Tenn but went off somewhere south of Atlanta. I'm wondering if the 'nominal' change in temperature from FL vs TN or the...