What does it mean to check cold tire pressure on the X-Trail?
1 Answers
The cold tire pressure check alert on the X-Trail vehicle is a tire pressure warning indication, signaling that one or more of the car's wheels have abnormal tire pressure, which may be either below or above the standard value. In such cases, it is advisable to promptly visit a tire repair shop to inspect the car tires for any leaks, insufficient air, or overinflation, and carry out necessary repairs in a timely manner. Tire pressure monitoring involves real-time automatic monitoring of tire pressure while the vehicle is in motion, with alerts for tire leaks or low pressure to ensure driving safety. There are three commonly used methods for tire pressure monitoring: Direct tire pressure monitoring: Direct tire pressure monitoring devices use pressure sensors installed in each tire to directly measure the tire's air pressure. The pressure information is then transmitted wirelessly from inside the tire to a central receiver module, which displays the tire pressure data for each tire. The system automatically alerts when the tire pressure is too low or if there is a leak. Indirect tire pressure monitoring: When the pressure in a tire decreases, the vehicle's weight causes the rolling radius of that wheel to become smaller, leading to a faster rotation speed compared to the other wheels. By comparing the differences in rotation speeds between the tires, the system monitors tire pressure. Indirect tire pressure alert systems essentially rely on calculating the rolling radius of the tires to monitor pressure. Introduction to Tire Pressure Monitoring System (TPMS): It combines the advantages of both the above systems, equipping direct sensors in two diagonally opposite tires and incorporating a four-wheel indirect system. Compared to using only a direct system, this hybrid system can reduce costs and overcome the limitation of indirect systems, which cannot detect when multiple tires simultaneously have low pressure. However, it still cannot provide real-time data on the actual pressure inside all four tires as a direct system does.
