Why is the vehicle tire pressure warning light on?
2 Answers
The reasons for the vehicle tire pressure warning light being on are: 1. Abnormal tire pressure; 2. Inaccurate setting of the tire pressure warning system; 3. ABS system malfunction. Methods to eliminate the tire pressure warning light: 1. Check the tire pressure when the vehicle is cold and unloaded, and adjust it to the appropriate level; 2. Reset the tire pressure warning system; 3. Inspect the ABS pump and sensors for any faults. Hazards of incorrect tire pressure: 1. Reduced tire friction and adhesion, affecting braking performance; 2. Causes steering wheel vibration and deviation, reducing driving comfort; 3. Accelerates uneven wear of the central tread pattern, shortening tire lifespan; 4. Increases vehicle body vibration, indirectly affecting the lifespan of other components; 5. Overextends and deforms the tire cords, reducing tire elasticity and increasing the load on the vehicle while driving; 6. Increases the friction coefficient with the road surface, leading to higher fuel consumption.
I've been driving on the road for over a decade, and the tire pressure light coming on is quite common. It's mainly due to low tire pressure, such as slow leaks, air contraction when temperatures suddenly drop, or rapid leaks from a nail puncture. It could also be slightly high pressure, especially noticeable when expanding during high-speed driving in summer. You should immediately pull over to a safe spot and check, using a simple pressure gauge to measure all four tires. The ideal values are listed on the label by the driver's door. If it's low, inflate to the standard value; if it's high, release some air. If the light remains on, the TPMS sensor might be faulty, the battery could be dead, or the system might be giving a false alarm, requiring a visit to the repair shop to scan for trouble codes. Don't ignore it—low pressure increases fuel consumption, lengthens braking distance, and raises the risk of a blowout. Make it a habit to check tire pressure regularly to prevent problems before they occur.
