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Old 11-15-2012, 08:44 PM
fishwater fishwater is offline
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Cold will not affect the sensors unless it is extreme cold like -30. The tires will have lower psi when cold than hot. If you checked them as soon as you got home from driving them expect them to be about 2-3lbs higher in the winter when they are hot vs. cold. In the Summer you can see 4-6psi difference. So in other words when you started the truck the tires were cold so the TPMS light went on, when you came home even the tires registering 30psi hot are still too low. The system will reset itself when the tires are set to the tire placard spec. The sensors are reading whenever the wheel is in motion & sends the data constantly for the module to read.
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