Tire Pressure Warning Light (TPMS) Light Coming On in Cold Weather? Here’s Why

TPMS Light On TPMS Light Coming On in Cold Weather? Here’s Why! If your TPMS (tire pressure monitoring system) warning light goes on during a cold snap, it may not mean your tire has a leak. Fun Fact Tire pressure can decrease about 1 PSI (pound per square inch) for every 10 degrees the temperature drops. It's not that more air is escaping your tires, but rather the air inside the tire condenses, taking up less space when it's cold. It's similar to how a cake, just out of the oven, flattens out a bit as it cools. [...]