Why does it still show low tire pressure after inflating?

[BriannaLee]

After inflating, the system still indicates insufficient tire pressure because the tire pressure has not been recalibrated. Simply recalibrate the tire pressure on the central control panel. If the system indicates insufficient tire pressure some time after inflating, but there are no punctures in the tire, it may be due to air leakage caused by wheel rim deformation. It is recommended to check the wheel rim and replace it if necessary. Here are the factors that affect tire pressure: Load capacity: For empty or half loads, refer to the lower limit of the tire pressure indicated on the vehicle's sticker as the reference value. For full loads, refer to the upper limit of the tire pressure indicated on the vehicle's sticker as the reference value. Tire pressure measurement environment: The tire pressure of a cold tire and a hot tire is different, with a difference of about 0.2-0.3. To obtain an accurate tire pressure reading, it is best to measure it after the vehicle has been parked for several hours. Otherwise, subtract 0.2-0.3 from the hot tire measurement to get the tire's cold inflation pressure. Driving conditions: If you frequently drive long distances on highways, the tire pressure should not be too low. Adjust it slightly higher by about 0.2 based on the standard tire pressure. If you frequently drive on rough roads, adjust it slightly lower by about 0.1-0.2 based on the standard tire pressure. Under normal conditions, this can be negligible.

[MacFinley]

I've encountered quite a few cases where the tire pressure warning light remains on after inflation, which is quite common. The main reason could be a slow leak in the tire, such as a small nail puncture that's not obvious—after inflation, the air slowly leaks out, causing the system to detect a drop in pressure. Another key issue could be with the tire pressure sensor or the system itself. The sensor might be faulty, dirty, or have a weak battery, sending incorrect signals. Sometimes, a system reset is needed to recognize the new pressure. Temperature also plays a big role; in cold weather, the air contracts, naturally lowering the tire pressure. If you don't inflate the tires when parked, the readings might still trigger a warning. It's recommended to drive a few kilometers after each inflation to allow the system to calibrate, manually check with a tire pressure gauge to ensure accurate readings, and if problems persist, visit a professional shop for a comprehensive check to avoid long-term low pressure damaging the tires.

[HarleyMarie]

As an ordinary driver, I find it particularly frustrating when the tire pressure warning light stays on after inflating the tires. Just the other day, my car had the same issue - the tires looked fully inflated, but the dashboard kept giving warnings. The possible reasons could be a slow leak or an overly sensitive sensor. I checked some forums, and many people mentioned that slow leaks are common, such as tiny invisible cracks in aging tires allowing air to escape. It could also be that the valve wasn't tightened properly during inflation, or the tire pressure monitoring system needs time to adjust to the new data. Some cars have complex designs where the system may delay if the vehicle hasn't been driven for too long, and the light might turn off automatically after driving for a while. However, don't ignore it - low pressure accelerates tire wear, increases fuel consumption, and most importantly, compromises safety. It's best to keep a tire pressure gauge handy and check regularly, addressing any issues promptly when found.

[EmeryMarie]

The tire pressure monitoring system continuously monitors pressure via sensors. If it still indicates low pressure after inflation, the primary reasons include system response lag or inaccuracies, requiring several minutes for data updates or even triggering during driving. Sensor malfunctions such as component damage or signal interference can lead to incorrect readings; sudden temperature drops causing pressure loss may be misinterpreted as hazardous by the system. Additionally, the system logic might not reset, necessitating manual calibration after power loss. Solutions include verifying manual pressure readings, checking sensor health, consulting the vehicle manual for reset procedures, and ensuring reliable system operation to prevent false alarms.