What is the reason why the tire pressure alarm does not sound after reset?
3 Answers
The reason why the tire pressure alarm does not sound after reset is that there is a problem with the tire pressure monitoring system, and the tires need to be checked. The following are precautions for car tire maintenance: 1. Pay attention to tire pressure: Pressure is the lifeblood of tires. Both too high and too low pressure will shorten the service life of the tire. If the pressure is too low, the deformation of the tire body increases, cracks are prone to appear on the sidewall, and flexural motion occurs, leading to excessive heat generation, which accelerates rubber aging, fatigue of the cord layer, and breakage of the cords. 2. Regularly check front wheel alignment: Front wheel alignment has a significant impact on tire service life, with front wheel toe-in and camber being the main factors. Excessive camber mainly accelerates shoulder wear (i.e., uneven wear), while improper toe-in mainly accelerates wear on the inner and outer sides of the tire. 3. Pay attention to driving habits: While driving, choose the road surface carefully to avoid sharp objects such as stones, glass, and metal that may puncture or scratch the tires, and avoid contact with chemical spills that may adhere to and corrode the tires. When driving on roads with significant curvature, try to stay in the center to reduce uneven tire wear caused by increased load on one side.
After resetting the tire pressure warning, if it doesn't alarm, it's mainly because the reset was successful and the tire pressure has returned to the normal range, so there's no need for an alarm. However, sometimes issues still arise, such as incorrect reset steps, not pressing the button long enough as required or waiting for the system self-check during operation; or the sensor battery is depleted, and over time, it runs out of power and can't send signals; it's also possible that the vehicle has just started, and the system needs to drive a certain distance to activate the alarm function, usually a couple of kilometers will do; the tire pressure itself may have issues but the sensor has aged and failed; the reset status wasn't saved in the vehicle settings, which can be checked on the central control screen; loose circuits may also cause signal interruptions. As someone who frequently drives long distances, I suggest manually checking the tire pressure gauge after resetting, ensuring all four tires are consistent, waiting ten minutes before hitting the road to test. If it still doesn't work, it might be a hardware failure, and you should seek a professional shop to repair or replace the sensor. During regular maintenance, have the technician check the TPMS system to prevent unexpected issues.
The tire pressure warning light not turning off after reset is most commonly due to an incomplete reset process, such as not operating with the ignition on or failing to drive to activate the system, directly causing the signal not to update. Another issue could be the sensor battery, which typically lasts 6-10 years; when the battery is low, it fails to send alerts. Indirect TPMS relies on ABS wheel speed data to calculate tire pressure differences, requiring the vehicle to exceed 30 km/h after reset to re-evaluate. In rare cases, a blown fuse or poor wiring connection can disrupt the entire signal chain. An ECU control module failure, whether due to software or hardware errors, may also prevent data processing. I'm familiar with these systems and recommend ensuring the vehicle is stationary with the engine running during reset, followed by a short test drive. If the issue persists, use a diagnostic tool to read fault codes and replace the sensor. Regular maintenance should include sensor checks to prolong their lifespan.
