Why is my TPMS light on when my tire pressure is fine?
If your tire pressure monitoring system (TPMS) light is illuminated on your dashboard, even though your tire pressure appears to be normal, there could be a few potential reasons. The TPMS light is designed to alert you when there is an issue with your vehicle's tire pressure, but it can sometimes turn on for other reasons unrelated to actual tire pressure.
Potential Reasons for TPMS Light Being On
- Tire Pressure Fluctuations: The TPMS system is sensitive and may detect small changes in tire pressure that don't necessarily require immediate attention. Slight pressure fluctuations due to temperature changes or other factors can sometimes trigger the TPMS light.
- Sensor Malfunction: The TPMS sensors located in each tire can sometimes malfunction or fail, causing the warning light to illuminate even if the tire pressure is normal.
- Low Battery in TPMS Sensor: TPMS sensors have small batteries that power the sensors. If the battery is low, it can cause the TPMS light to turn on.
- Incorrect Tire Pressure Setting: The TPMS system is calibrated to specific tire pressure levels. If the recommended tire pressure is changed but the TPMS system is not recalibrated, the light may stay on.
- Damaged TPMS Sensor: If a TPMS sensor is physically damaged, such as from hitting a pothole or curb, it can trigger the warning light.
If the TPMS light is on and your tire pressure appears normal, it's a good idea to have your vehicle inspected by a professional to diagnose the underlying issue. They can use a TPMS diagnostic tool to identify the specific problem and make the necessary repairs or adjustments.
