What's the matter with the tire pressure warning?
3 Answers
The main reasons for the car's tire pressure warning are: 1. The tire pressure data was not reset after tire repair or inflation. After repairing or inflating the tire, the tire pressure data needs to be reset. Otherwise, even if the tire pressure is normal, the monitoring system will retain the original fault code, so the tire pressure light will still be on. Generally, you just need to go to a 4S shop and ask the staff to use a decoder to clear the original fault code. If there is a tire pressure reset button on the car, you can also perform a manual reset. 2. The battery of the tire pressure sensor is dead. Tire pressure monitoring sensors can be divided into external and internal types based on their installation position. The external type is installed on the tire's valve stem, while the internal type is installed inside the tire. Both types of sensors require batteries to operate. The battery life of the external type is 1-2 years, and the internal type is 5-8 years. Once the battery is exhausted, the tire pressure sensor will not work, causing the tire pressure light to come on even though the tire pressure is normal. 3. Valve stem leakage, the car being idle for too long, or external temperature effects. When the car's tire pressure is abnormal, the tire pressure warning light on the dashboard will come on. At this time, the owner should pay attention to checking the tires. If the tire pressure light comes on while driving, it is best to reduce speed, control the steering wheel, and find a safe place to check. Whether the tire pressure light disappears afterward or not, it is necessary to go to a nearby repair shop for a recheck as a precaution.
During my driving experience, I've encountered numerous tire pressure warning alerts. Common causes usually include either underinflated or overinflated tires, such as pressure dropping due to thermal expansion and contraction in summer, or air leakage from punctures like nails. When the warning light comes on, immediately reduce speed and find a safe place to pull over for inspection. Tap the tires by hand to feel if they're flat, and if you have a pressure gauge, quickly measure all four tires' values. Standard pressure is typically indicated on the door frame. If the issue can't be resolved, prioritize going to a nearby repair shop for troubleshooting to avoid blowouts or accidents on the road. Develop a habit of manually checking tire pressure monthly, especially before long trips, ensuring it's set within the recommended range to prevent many minor issues. Sensors might occasionally give false alarms, particularly in older vehicle models, so have mechanics check sensor battery levels or consider replacements during regular maintenance.
When I first learned to drive, the tire pressure warning light made me extremely nervous—it turned out to be a pressure issue. Simply put, it could be due to a puncture causing air leakage or significant temperature changes leading to pressure fluctuations. The solution is quite straightforward: pull over, take out a portable tire pressure gauge from the trunk to measure each tire's pressure, then compare it with the recommended values on the vehicle's label to either inflate or deflate. If one tire is severely underinflated, try replacing it with the spare tire and head to a repair shop. Don’t underestimate this—maintaining proper tire pressure not only saves fuel but also extends tire life. When the weather turns cold, add a bit more air. I always remind myself not to skip regular checks for the sake of convenience.
