What Causes a Tire Pressure Monitoring System Malfunction?
2 Answers
Tire pressure monitoring system malfunctions may be caused by depleted battery power in the tire pressure sensors, sensor signal failures, sensor circuit issues, or faults in the body control module. Indirect tire pressure monitoring systems use wheel speed sensors to compare the rotational speeds of tires to determine if tire pressure is abnormal. If the tire pressure monitoring system displays a fault, it's likely due to problems with the wheel speed sensors or poor internal connections. Methods for checking tire pressure monitoring: 1. While driving, the system automatically monitors and detects changes in tire pressure in real-time. It provides warnings for tire leaks, low pressure, or pressure increases due to rising ambient temperatures through audible alerts and special indicators on the dashboard; 2. Promptly stop to inspect or perform maintenance to ensure safety for both the driver and vehicle when on the road. Vehicles equipped with tire pressure monitoring will have indicator lights on the dashboard; 3. Sometimes, after replacing new tires, the indicator light may illuminate. Driving slowly for approximately 10 kilometers will usually cause it to automatically turn off.
Last month my tire pressure monitoring system alarm went off, making me nervous the whole way. Actually, system failures are quite common, mostly due to these four issues: the small sensor inside the wheel running out of battery (designed lifespan is only 5-6 years), the sensor getting accidentally damaged during tire repair, the system not being reset after tire rotation, or oxidized wiring connections causing poor contact. I first used a mechanical tire pressure gauge to check all four tires myself to confirm there was no air loss before driving to the repair shop. The technician used a diagnostic tool and found the left front wheel sensor was indeed dead. Normally, be careful not to use high-pressure water jets directly on the valve stem, remind technicians to handle the sensor base gently during tire changes, and try manually resetting the system first if it gives false alarms. Underinflated tires not only increase fuel consumption but also raise the risk of blowouts on highways, so always prioritize addressing warning lights. Remember to check sensor status during seasonal maintenance each year.
