What Causes the Tire Pressure Light to Keep Flashing?

[SanOlive]

Here are the reasons why the tire pressure light keeps flashing: 1. The tire pressure monitoring light may illuminate due to a punctured tire, which usually causes a very slow air leak. In such cases, it might be difficult to immediately identify which tire is affected. You can use a tire pressure gauge to measure the pressure. If the tire is underinflated, inflate it to the proper level and then observe the tire pressure warning light. 2. Sometimes, the tire pressure monitoring light comes on due to overinflation. According to international standards, the recommended inflation pressure for passenger car tires is as follows: standard tires: 2.4 to 2.5 bar; reinforced tires: 2.8 to 2.9 bar; maximum pressure should not exceed 3.5 bar. 3. The tire pressure monitoring light may also illuminate after prolonged driving with low tire pressure. This usually occurs when one tire is significantly underinflated, causing the tire temperature to rise during high-speed driving, which in turn increases the tire pressure. In such cases, you should stop and rest or replace the tire with a spare one as soon as possible.

[DelAngelina]

When the tire pressure warning light flashes continuously, it usually indicates low tire pressure or a system malfunction. The most common cause is insufficient pressure due to a tire leak, which triggers the system to flash the warning light. It could also be a fault in the tire pressure monitoring sensor, such as a depleted battery or internal damage preventing proper operation. During frequent vehicle use, slow leaks caused by punctures like nails may lead to gradual pressure loss, resulting in persistent alerts. Extreme temperature changes can affect pressure readings—for example, cold winter temperatures may cause a drop in tire pressure, potentially triggering false alarms. Ignoring this warning increases fuel consumption, accelerates tire wear, and even poses a risk of blowouts, compromising driving safety. I recommend immediately checking all tire pressures with a gauge and inflating them to the standard levels specified in the vehicle manual. If the light continues flashing after inflation, a professional repair shop should scan for fault codes to rule out sensor or wiring issues. Regular maintenance of the tire pressure system can effectively prevent such unexpected problems.

[KeeganFitz]

The sudden flashing of the tire pressure warning light really startled me, reminding me of a similar experience while driving. I immediately pulled over to check the tires and noticed the left front tire was slightly flat, likely due to a slow leak from a nail puncture. After quickly inflating it at a gas station, the light returned to normal. A friend shared a similar experience, mentioning that if it's a new car, the system might not be properly initialized, causing the light to flash as a warning. The key is not to ignore it—check the tire pressure immediately to avoid risks at high speeds. If the light continues to flash after confirming normal pressure, it might indicate aging sensors or poor wiring contact, requiring repair. Developing a habit of checking tire pressure monthly can reduce unexpected issues and ensure a smooth, worry-free drive.

[DeSophie]

A flashing tire pressure light is a serious warning signal, indicating insufficient tire pressure or abnormal risks. Driving with low tire pressure increases friction and overheating, which can lead to tire blowouts, especially affecting handling and safety during high-speed driving or cornering. You should immediately slow down, stop the vehicle, and move away from hazardous areas. Use onboard tools such as a tire pressure gauge to check the pressure of each tire. If low pressure is detected, inflate the tires to the standard value as soon as possible to address the root cause. If the light continues to flash after inflation, professional diagnosis is needed to determine whether it's a sensor malfunction or a system calibration error. Do not delay in addressing this issue—safety is the top priority. Consistently maintain regular maintenance habits.