Why does the tire pressure alarm not trigger after reset?

[DelMaria]

Tire pressure alarm not triggering after reset is likely due to a faulty tire sensor that needs replacement. Under normal circumstances, it's unlikely for all four tires to have abnormal pressure simultaneously. This issue may stem from the tire pressure system or tire pressure sensors, and it is recommended to have it checked at a 4S shop. Abnormal tire pressure can occur for the following reasons: Abnormal tire pressure: Generally, the alarm will trigger if the pressure is below 1.8 bar or above 3.0 bar. In such cases, tire inspection and pressure adjustment are necessary. Tire pressure monitoring not reset: After inflating the tires, if the tire pressure monitoring system is not reset promptly, it will continue to record the previous data, causing the tire pressure monitoring indicator to light up. Simply performing a tire pressure reset will resolve this issue. Damaged tire pressure sensor: The tire pressure sensor, which monitors tire pressure, is directly installed inside the tire and connected to the tire inflation valve. If the sensor is damaged during driving, it can cause the tire pressure warning light to illuminate. For sensor damage, the only solution is to replace it with a new component.

[Emilia]

The tire pressure warning light stopped alarming after reset, which I've experienced before. Last time it happened when my car reached 5 years old. After reset, if the light doesn't come on, either the tire pressure has returned to normal or there's an issue with the sensor. The battery life of TPMS sensors is typically 5-7 years - they may have automatically shut down due to depleted battery. Incomplete reset is another common reason; some models require driving a few kilometers for recalibration after reset - I once had to drive on the highway before it worked again. If the sensor is broken, it won't send signals to the system, so the warning light naturally won't illuminate. I recommend manually checking each tire's pressure with a gauge. If all readings are normal, monitor for a few days. If the issue persists, have a professional shop scan the sensor status with a diagnostic tool. Never ignore safety risks - underinflated tires are extremely dangerous. The solution is simple but must be addressed promptly.

[SkylarDella]

My car had a similar issue before. The TPMS warning light went off after resetting the system, but I later found out it was caused by a faulty sensor that had stopped reporting for a long time. The TPMS design is such that if the system detects no problem or loses sensor signals after reset, it remains silent. Sensors can get damaged from impacts, water intrusion, or circuit aging. The reset procedure also requires attention to detail—some cars need to be turned off first before pressing the reset button, waiting for the light to flash, and then restarting. Dead batteries are common; I once saw a mechanic replace a sensor battery to fix the issue. It's best to recheck if tire pressure meets standards. If manual tests show normal readings but the system still doesn't work, it's likely a hardware problem. Don't attempt DIY repairs—consult a professional to avoid blowouts or accidents on the road. Driving safety should always come first.

[OIsabel]

This is quite common. If the tire pressure warning system doesn't alert after reset, it means either no abnormality was detected or there's an issue. Your tire pressure might have returned to normal, so the warning light went off. Alternatively, the reset procedure might have been incorrect - I suggest carefully following the manual's steps again, such as starting the engine and pressing the button while parked. If the sensors are old or damaged, they may lose connection and cause the system to stop working. I recommend regularly checking tire pressure with a gauge to ensure it's within the recommended range. For safety, if the warning still doesn't activate after reset, visit a professional shop for inspection - don't delay too long to avoid potential road hazards.