How to Solve Indirect Tire Pressure Monitoring Fault?
2 Answers
Here are the solutions for indirect tire pressure monitoring faults:1. Direct tire pressure monitoring: The direct tire pressure monitoring device uses pressure sensors installed in each tire to directly measure the tire pressure, and uses a wireless transmitter to send the pressure information from inside the tire to the central receiver module, which then displays the tire pressure data for each tire. When the tire pressure is too low or there is a leak, the system will automatically alert.2. Indirect tire pressure monitoring: The working principle of indirect tire pressure monitoring is that when the pressure of a tire decreases, the weight of the vehicle will cause the rolling radius of that wheel to become smaller, resulting in its rotation speed being faster than the other wheels. By comparing the difference in rotation speed between the tires, the purpose of monitoring tire pressure is achieved. The indirect tire alarm system actually relies on calculating the rolling radius of the tire to monitor the pressure.3. Characteristics of the two types of tire pressure monitoring: These two types of tire pressure monitoring devices each have their own advantages and disadvantages. The direct tire pressure monitoring device can provide more advanced functions, measuring the actual instantaneous pressure inside each tire at any time, making it easy to identify the faulty tire.
When I first started driving, I encountered an indirect tire pressure monitoring system (TPMS) malfunction with the warning light constantly on, which made me quite nervous. It happened after I got new tires but forgot to reset the system. The solution was actually simple. First, manually check all four tires' pressure with a gauge to ensure they're consistent and match the manufacturer's recommended value, like around 230 kPa. Second, make sure all tires are the same size and have even wear, otherwise the system may misjudge. Third, drive for a while to let the computer relearn wheel speed differences—maintain speeds above 50 km/h for a few minutes, and sometimes the warning light will turn off by itself. If it persists, press the reset button or initialize the TPMS system via the infotainment menu (location specified in the user manual). If the issue recurs, it might be due to dirty or faulty ABS sensors, requiring professional diagnosis with a scan tool. Safety first—never ignore this, as tire blowouts at high speeds are dangerous. Plus, regular tire pressure checks can prevent many issues.
