Why wont my tire pressure light go off after filling tires?
If you've recently filled your tires to the recommended pressure but the tire pressure monitoring system (TPMS) light remains on, you're not alone. This is a common issue that can be caused by several factors. In this article, we'll explore the possible reasons why your TPMS light won't turn off and what you can do to resolve the issue.
Understanding How the TPMS Works
The TPMS is designed to alert you when one or more of your tires are significantly underinflated, which can lead to unsafe driving conditions. Modern vehicles use either direct or indirect TPMS systems:
- Direct TPMS: Uses sensors inside the tires to measure air pressure and send data to your car's computer.
- Indirect TPMS: Relies on the car's ABS system to detect differences in wheel speed, which can indicate low tire pressure.
Understanding which type of TPMS your vehicle uses can help you troubleshoot the issue more effectively.
Reasons Your Tire Pressure Light Won't Turn Off
Even after inflating your tires to the correct pressure, the TPMS light may stay on for several reasons:
- Incorrect Tire Pressure: Double-check that all tires are inflated to the manufacturer's recommended PSI, including the spare tire if your car monitors it.
- Faulty TPMS Sensor: A damaged or malfunctioning sensor inside the tire can prevent the system from resetting.
- Temperature Changes: Sudden drops in temperature can cause tire pressure to decrease slightly, triggering the TPMS light.
- System Needs Resetting: Some vehicles require a manual reset of the TPMS after adjusting tire pressure.
- Uneven Tire Wear: Significant differences in tire wear can confuse an indirect TPMS system, causing the light to stay on.
Identifying the root cause is the first step toward resolving the issue and ensuring your TPMS functions correctly.
Steps to Reset Your TPMS Light
If you've confirmed that your tires are properly inflated and the light is still on, try the following steps to reset the TPMS:
- Drive your car at a speed of 50 mph or higher for about 10 minutes. This can recalibrate the TPMS in some vehicles.
- Turn the ignition to the "on" position without starting the engine, then press and hold the TPMS reset button (usually located under the steering wheel) until the light blinks three times.
- Check your vehicle's owner's manual for specific instructions on resetting the TPMS for your make and model.
- If the light remains on, visit a professional auto repair shop to inspect the sensors and system for faults.
Following these steps can often resolve the issue, but if the problem persists, professional assistance may be necessary.
When to Seek Professional Help
If you've tried all the above steps and the TPMS light still won't turn off, it may indicate a more serious issue, such as a faulty sensor or a problem with the TPMS module. At Kevin's Autos, we specialize in diagnosing and repairing TPMS issues to ensure your vehicle is safe and road-ready. Don't hesitate to contact us for expert assistance.
Remember, driving with improperly inflated tires can lead to reduced fuel efficiency, uneven tire wear, and even accidents. Addressing TPMS issues promptly is essential for your safety and the longevity of your vehicle.
Frequently Asked Questions
Why is my tire sensor light staying on?
When the TPMS light comes on – and stays on – at least one of your tires is at a low pressure level. Check the pressure of all of the tires with a gauge and determine the cause of pressure loss and add air or service the tire(s) as appropriate.
Can I reset my TPMS myself?
Hold the TPMS reset button until the tire pressure light blinks three times, then release it. Start the car and wait about 20 minutes for the sensor to refresh. You will find the tire pressure monitor reset button under the steering wheel. Refer to your vehicle's owner's manual if you can't find it.
Why wont my tire light go off after filling tires?
If you've added air but the air pressure warning light stays on, there's a problem with your Tire Pressure Monitoring System or you have a slow leak... Quick Tip: If the TPMS warning light comes back on after you've filled the tire with air, recheck the tire to make sure it is inflated to the proper air pressure.
How do I know if my tire pressure sensor is messed up?
Sensor Malfunctions: If your tire pressure is within the recommended range, but the sensor triggers a warning light, it may be malfunctioning. Handling Differences: Should you notice handling changes like swerving or flat tires without a TPMS alert, the sensor might be failing to detect these crucial pressure drops.
Why is my tire pressure warning still on after pumping tires?
If the light remains on after adjusting the tire to the proper PSI, you may need to repair your tire, have your TPMS inspected, or try one of the following: Go for a 10-minute drive. Get up to 50 MPH, if possible.
How long does it take for tire pressure sensor to go off?
Once you have properly inflated your tires, the tire pressure light should automatically go off. However, if it doesn't, there are a few different things that you can try: Drive at or above 50 mph to reset the sensor for 10 minutes. This causes your sensor to reset the next time you turn on your car.
What happens if you pump too much air in a tire?
It can cause uneven wearing through the centre of the tyre's tread, and can even effect handling. As a result of this damage, the inflated tyres will lose traction, less successfully react to hazards on the road, and make the car less pleasant to drive.
How long does it take for tire pressure light to go off after filling?
Once your tires are at the appropriate pressure, the light may go off on its own. If it doesn't go off right away, driving at 50 mph for about 10 minutes should help the tire pressure sensor reset.
Why is my tire pressure light still on after putting air in my tires?
The causes can be a malfunction, or the weather changes. Other reasons why your TPMS light may still be blinking is because your tire may be damaged, or you might have gotten a recent tire replacement. Overall, the reasons can be vast, which is why it is best to take your car to a technician for professional diagnosis.
Why is my TPMS light on when my tires are full?
If you've inflated your tires to the proper air pressure, but the warning light stays on, you may have a leak or there's a problem with the TPMS in one or more of your tires. It's simple enough to check if there's a leak in a tire. Just use your tire gauge to recheck the air pressure in all your tires.
