How to Reset Tire Pressure Light

Is your TPMs light on even after you have inflated your tires? There’s a chance you need to reset the system to make the flashing tire pressure light stop. Your tire pressure monitoring system (TPMS) is an essential safety component of your vehicle and must remain activated. To help reset it, we’ve created an easy-to-follow guide that you can use right at home, or you can visit our West Chester service center and have one of our factory-trained technicians look at your vehicle.

Resetting Your Tire Pressure Light: Step-by-Step Guide

Once you have inflated your tires, the TPMS light should go off. However, if the light remains on, there are a few things you can do:

• Drive at or above 50 mph, this resets the sensor for 10 minutes. Doing this could make your sensor reset the time you turn on your car.
• With the vehicle off, turn the key to the “ON” position without actually starting the car. Hold the TPMS reset button until the tire pressure light blinks three times, then release it. Start the car and wait 20 minutes so the sensor can refresh. You will find the tire pressure monitor reset button beneath the steering wheel. Check the user’s manual if you can’t find it.
• Inflate all tires to 3 PSI over the recommended amount, then deflate all of them completely. This includes the spare tire because it could have a sensor as well. Once deflated, reinflate the tires to the recommended tire pressure.
• With the vehicle off, use a wrench to disconnect the positive battery cable. Turn the car on and honk the horn for roughly three seconds to discharge any power that’s still stored in the vehicle. Then reconnect the battery.

What Does The Flashing Tire Pressure Light Mean?

Since the tire pressure sensors sometimes use a battery, the flashing tire pressure light often means the battery needs to be replaced. It can also be a sign there’s an issue with one of the sensors. You can schedule a service appointment with our Cincinnati-area service center, and our team will take care of the rest!

Get Additional Service Tips at Mercedes-Benz of West Chester!

Even though you now know what to do when the TPMS light is on, you can still contact our service center if you have any questions along the way.