Will the Tire Pressure Alarm Go Off If the Pressure Is Too High?
2 Answers
Both excessively high and low tire pressure will trigger an alarm in a car. When the system detects inconsistent air pressure among the four wheels, it will illuminate the tire pressure warning light on the dashboard and emit an audible alert to notify the driver. Tire pressure alarms generally come in two forms: direct tire pressure monitoring and indirect tire pressure monitoring. Below is a detailed introduction: 1. Direct tire pressure monitoring involves installing a pressure sensor inside the tire to directly measure the internal tire pressure. The sensor then sends pressure monitoring signals to the receiving module of the tire pressure monitoring system, where the processed signals display simulated values on the dashboard. This is the tire pressure reading you see. The advantage of this system is that it continuously monitors the actual instantaneous pressure inside each tire, making it easy to identify the faulty tire when an issue arises. 2. Indirect tire pressure monitoring compares the wheel speed sensor signals of the car's tires to detect differences in rotational speed between them, generating a simulated tire pressure signal. After processing, this signal is displayed on the dashboard. When the tire pressure is too low, the weight of the car causes the diameter of the tire to decrease, leading to a deviation in the rotational speed of that wheel compared to the others, thereby triggering the tire pressure alarm.
Yes, high tire pressure usually triggers an alarm. Last time when I drove on vacation during extremely hot weather, the tire pressure suddenly increased and a yellow exclamation mark immediately flashed on the dashboard, which startled me. Later I learned this is called the Tire Pressure Monitoring System (TPMS), which constantly monitors each tire's pressure. If the pressure becomes too high or too low – for instance, exceeding about 20% of the manufacturer's recommended value – the system will sound an alarm or illuminate a warning light. The reason is simple: excessive pressure causes accelerated wear on the central part of the tire and increases the risk of a blowout, especially during highway driving or in hot seasons. I recommend developing a habit of checking monthly with a home tire pressure gauge to maintain values close to the standard indicated on the door label. Since tire pressure fluctuates easily with significant temperature changes between winter and summer, paying extra attention can save you considerable trouble and repair costs. Driving safety comes first – never overlook these seemingly minor issues.
