One tire is not showing on the tire pressure monitor. Do I need to replace them all?

If the tire pressure is not displayed, there may be a problem with the sensor and it needs to be replaced. Under normal circumstances, it is impossible for the tire pressure of all four tires to be abnormal. This may be a problem with the tire pressure system or tire pressure sensor. Go to the 4S store for inspection. If the tire pressure of one tire is not displayed, first make sure that the tire pressure sensor of this wheel is installed correctly.

Solution: Remove the tire and reinstall it and try again. If it is not displayed yet, you can change the normal sensor to this wheel. If it does not display again, it means that the tire pressure display module is faulty. If it displays normally, it means that the sensor is broken. The solution is to replace related parts with new ones, or get a new set of tire pressure monitoring products.

Check whether the tire pressure of the four tires is normal. If it is not normal, after finding out the cause, it needs to be reset. The switch is set in front of the gear lever. The key is turned on or the instrument is idle for 3 seconds. The indicator light lights up once and there is a "ding" sound, proving that the initialization is completed.

Tire pressure monitoring methods:

1. Direct tire pressure monitoring: The connected tire pressure monitoring device uses a pressure sensor installed in each tire to directly measure the tire. Air pressure uses a wireless transmitter to send pressure information from inside the tire to the central receiver module, and then displays the air pressure data of each tire. When the tire pressure is too low or there is a leak, the system will automatically alarm.

2. Indirect tire pressure monitoring: The working principle of indirect tire pressure monitoring is: when the air pressure of a tire decreases, the weight of the vehicle will make the rolling radius of the wheel smaller, resulting in its rotational speed. Faster than other wheels. By comparing the speed differences between tires, the purpose of monitoring tire pressure is achieved. The indirect tire warning system actually relies on calculating the rolling radius of the tire to monitor air pressure.

3. Introduction to Tire Intelligent Monitoring System (TPMS): It has the advantages of the above two systems. It is equipped with direct sensors in two tires that are diagonal to each other and is equipped with a 4-wheel indirect system. . Compared with all direct systems, this composite system can reduce costs and overcome the shortcomings of indirect systems that cannot detect low air pressure in multiple tires at the same time. However, it still does not provide real-time data on the actual pressure within all 4 tires like a direct system