What Does It Mean When the Tire Pressure Warning Light Is On but No Abnormality Is Found in the Tires?

[LaAnderson]

If the tire pressure warning light on the car's dashboard comes on, but no visible abnormalities are observed in the tires, the possible reasons are as follows: 1. Slow Tire Leak: The tire may be leaking air very slowly, making the leakage phenomenon extremely subtle and undetectable to the naked eye. Typically, when the warning light comes on, drivers immediately check all four tires. If the issue is not obvious, it can create a false impression. 2. System Malfunction or False Alarm: Due to certain reasons, the sensor or receiver module may be damaged, or the wiring may be faulty, leading to incorrect tire pressure detection. 3. Thermal Expansion Causing Increased Tire Pressure: After prolonged driving, the temperature of the tires rises. Due to thermal expansion, the tire pressure also increases. This may not be noticeable just by visual inspection. Once the tires cool down naturally, the tire pressure warning may automatically disappear.