Do Car Tire Pressure Monitors Need Battery Replacement?
2 Answers
Tire pressure monitors require battery replacement. If not replaced, the tire pressure monitoring system cannot function properly, failing to achieve its monitoring purpose. Below is a partial introduction to the batteries: 1. The battery is placed together with the tire pressure sensor, and the batteries are divided into built-in and external types. 2. For external tire pressure monitors, replacing the battery does not require removing the tire, as the sensor is on the outside. Simply remove the battery, replace it, and then reinstall it in the original manner. 3. Replacing the battery in a built-in tire pressure monitor is more troublesome. First, remove the tire, take out the sensor, open the sensor, and then reassemble it in the original manner. 4. When the battery of the sensor on the car tire is low, an alarm will sound to alert the driver, and the corresponding tire icon on the display will also flash as a warning.
I just replaced the TPMS battery last year, and these things do require regular replacement. The built-in ones typically last 5-7 years, while the external ones need replacement every 2-3 years. If you notice the dashboard constantly showing abnormal tire pressure or the warning light coming on inexplicably, it's most likely a dead battery. Once before a long trip, my TPMS suddenly failed, and upon opening it, I found the coin battery had leaked. I recommend keeping a few CR1632 coin batteries in the glove box. Just remember to perform a tire pressure sensor relearn after replacement, or the system might not recognize the sensor. By the way, avoid directly spraying high-pressure water at the valve stem during car washes, as it can prematurely drain the battery.
