Why does the dashboard show low tire pressure when the tires are fine?
2 Answers
If the low tire pressure warning persists after inflating the tires, it's because you haven't recalibrated the tire pressure. Simply recalibrate the tire pressure through the central control system. If the warning appears some time after inflation but there are no punctures in the tires, it may be due to air leakage caused by wheel deformation. It is recommended to check the wheels and replace them if necessary. Standard tires: 2.4-2.5bar; Reinforced tires: 2.8-2.9bar; Maximum pressure: should not exceed 3.5bar. Solutions for insufficient tire pressure: If no damage is visible, simply inflate to the normal tire pressure and reset the tire pressure system; If a puncture is found upon inspection, drive to a tire shop promptly for repair, then reinflate; If the warning appears some time after inflation but there are no punctures, it may be due to air leakage caused by wheel deformation. It is recommended to check the wheels and replace them if necessary.
I've been driving for over a decade and often encounter the strange phenomenon where the dashboard warns of low tire pressure but the actual tire pressure checks out normal. This is usually an issue with the tire pressure monitoring system, with aging sensor batteries leaking being the main culprit, especially in older vehicles that have been driven for five or six years or more, where battery depletion is highly probable. Sudden cold weather causing air contraction and tire pressure fluctuations can also trigger false alarms from the sensors, with false warnings commonly occurring when starting the car after it's been parked in the garage overnight. Another possibility is that the system isn't properly calibrated or there's poor contact with a wheel sensor, preventing signal transmission. My personal approach is not to panic but to first use a backup handheld tire pressure gauge to re-measure all four tires, ensuring they're within the recommended range in the vehicle's manual. If everything checks out, it's most likely a sensor malfunction, requiring a visit to the repair shop for a professional to reset or replace it with specialized tools. During regular maintenance, I always remind the technician to check the sensors to prevent unexpected issues, as safety is paramount, and ignoring warnings could mask real risks.
