What to Do When the TPMS Light Comes On?

[NaomiLee]

When the TPMS light comes on, you should immediately reduce your speed and avoid sharp steering and sudden braking, then check the tire pressure. TPMS stands for Tire Pressure Monitoring System, and if the indicator light is on, it indicates that the pressure in one of the tires may be too low. If you have a simple inflation tool in your car, you can measure the pressure of each tire and inflate them yourself. If you don't have a simple inflation tool, you can drive slowly to the nearest repair shop for inflation. There are two types of tire pressure monitoring systems based on different monitoring principles: one is direct tire pressure monitoring, which involves pressure sensors installed in each tire to directly measure the tire pressure. The pressure information is transmitted wirelessly from inside the tire to a central receiver module, which then displays the pressure data for each tire. The other is indirect tire pressure monitoring, where when the pressure in a tire decreases, the vehicle's weight causes the rolling radius of that tire to become smaller, making it rotate faster than the other wheels. By comparing the rotational speed differences between the tires, the system monitors the tire pressure.