TPM (Tire Pressure Monitoring) lights can sometimes illuminate when there are rapid temperature changes, particularly when transitioning from hot to cold weather. This occurrence is due to the ideal gas law, which states that the pressure of a gas (such as the air inside your tires) is directly proportional to its temperature.

When the weather turns colder, the air inside your tires contracts, causing a decrease in tire pressure. This decrease in pressure can trigger the TPM light to come on because it indicates that the tire pressure is below the recommended level.

Conversely, when the weather warms up, the air inside the tires expands, causing an increase in tire pressure. This increase in pressure can also trigger the TPM light if the pressure exceeds the recommended level.

It’s important to note that while temperature changes can affect tire pressure, other factors such as leaks or punctures can also cause fluctuations in tire pressure and trigger the TPM light. Therefore, it’s a good idea to check your tire pressure regularly, especially when there are significant temperature changes, to ensure optimal safety and performance.