Why is the tire pressure warning still displayed on the dashboard after patching the tire?
2 Answers
It indicates that the air pressure of the newly patched tire is abnormal (usually overinflated). It must be adjusted to match the pressure of the other three tires. Here are the details: 1. Tire pressure warning cannot be cleared: If the tire pressure warning cannot be cleared, it means the tire pressure is either too high or too low. It is recommended to check the air pressure of all four tires. The normal tire pressure values are usually marked on the driver's side door edge or fuel tank cap, typically 2.2 for front tires and 2.4 for rear tires. 2. Tire pressure adjustment: Generally, car tire pressure should be checked at least once a month, and adjusted with each season change. The ideal times for adjustment are November and May. In November, as winter approaches, tire pressure usually decreases and should be slightly adjusted. In May, as the weather gets hotter, it is advisable to check if the tire pressure is normal. Special attention should be paid to ensuring that the tire pressure is not significantly higher than the standard range, and there is no need to deliberately reduce the tire pressure.
I also encountered an instrument display issue after my last tire repair. The tire seemed fixed but the warning light remained on, usually because the tire pressure monitoring system wasn't promptly reset. The system is designed to automatically detect changes, but without manual reset, it might still retain old data. You can check your vehicle's user manual for TPMS reset methods: typically involves holding a button or menu operation. Wait a few minutes after resetting for system refresh. If the light persists, don't rush to replace parts—first confirm the tire isn't actually leaking (possible unsealed puncture or loose valve core). I'd also recommend getting a tire pressure gauge to manually check all four tires' pressure, ensuring uniformity to avoid highway hazards. I've seen this situation several times—patient troubleshooting always resolves it.
