Why does the tire pressure warning light stay on?

[DiBella]

The first subject exam can be taken twice on the same day. If you fail the first attempt, you can take a free second attempt. If you still fail the second attempt, the exam for this subject will be terminated, and you can only schedule another exam after ten days. Below is a relevant introduction to the first subject exam: 1. Exam content: The first subject refers to the theoretical driver's test, conducted at the vehicle management office, which all license applicants must pass. The exam content includes the most basic knowledge such as driving theory fundamentals, road safety laws and regulations, traffic signals, traffic rules, plus local regulations. The scheduling of the theoretical driver's test is arranged by the local vehicle management office. 2. Exam sequence: The first subject is part of the teaching and examination outline for motor vehicle driver training. The examination part of this outline is divided into three subjects, organized by the traffic management department of the public security authority. The exams are conducted in the order of the first subject, the second subject, and the third subject. After passing the previous subject exam, you can proceed to the next subject exam; if you fail the previous subject exam, you must continue with the same subject exam.

[DeHailey]

The tire pressure warning light keeps coming on, which I think is quite common. As a seasoned driver with years of experience, I've encountered this issue many times. Usually, it's due to abnormal tire pressure, either too high or too low. In summer, the heat causes tires to expand and the pressure to rise; in winter, the cold weather lowers the pressure, making the light more likely to come on. Another common cause is a sensor issue—the small device inside the wheel hub. If its battery runs out after prolonged use, it may falsely report a fault. Once, I went to a 4S shop for a check-up and found that the sensor had aged; replacing it solved the problem. There are also cases where the initialization fails, and simply resetting the system will do the trick. Tire leaks or punctures from nails can also trigger the light, so it's best to check each tire with a pressure gauge. If the pressure is normal but the light remains on, it's necessary to visit a professional shop to diagnose the electrical wiring to avoid long-term neglect affecting driving safety. Safety first—don't delay!

[StCassidy]

From a technical perspective, the tire pressure monitoring system (TPMS) is part of automotive electronics. A constantly illuminated warning light usually indicates pressure deviation or sensor malfunction. Based on my analysis, TPMS sensors typically have a lifespan of around 5 years - when the battery depletes, the light remains on persistently. System reset also requires proper operation, such as long-pressing the dashboard button to recalibrate baseline values. Pressure fluctuations can trigger false alarms too, like sudden temperature changes or high-speed driving where tire heat causes pressure rise. I've personally tested this - using a simple tire pressure gauge to check each tire against the standard values (usually listed on the door frame label). If below standard, inflate to correct levels. Electrical interference from loose wiring may also cause issues. If all tire pressures are normal but the light persists, connecting a diagnostic tool to read fault codes can determine sensor failure, with replacement being the solution when necessary.

[ParkerLee]

The tire pressure light staying on without response poses significant safety risks, which I emphasize because it directly impacts driving stability and the potential for tire blowouts. Incorrect pressure accelerates tire wear, increases braking distance, and significantly raises risks during high-speed driving. A persistently illuminated light usually indicates ongoing issues, such as a slow leak in one tire or permanent sensor damage, and should never be ignored. Immediately find a safe place to pull over and manually check the tire pressure for obvious signs of underinflation or leaks. If none are found, visit a professional repair shop as soon as possible to diagnose the system, preventing minor issues from escalating. Regularly inspect tire pressure and sensor conditions during maintenance to prevent such failures and ensure worry-free travel.