Tire Pressure Monitoring System (TPMS): What It Is & How to Reset It
Your vehicle’s Tire Pressure Monitoring System (TPMS) plays a critical role in safety, fuel efficiency, and tire longevity. When the TPMS warning light appears on your dashboard, it’s your vehicle’s way of alerting you to a tire pressure issue that should not be ignored. Understanding how TPMS works, why the warning light turns on, and how to reset it after tire service can help keep your vehicle running safely and efficiently.
At Art Morse Auto Group, our service teams regularly assist drivers with TPMS diagnostics, tire pressure adjustments, and sensor replacement when needed.
What Is a Tire Pressure Monitoring System (TPMS)?
TPMS is an electronic system designed to monitor the air pressure inside your vehicle’s tires. When one or more tires drop below the manufacturer’s recommended pressure level, the system activates a dashboard warning light.
There are two main types of TPMS used in modern vehicles:
Direct TPMS: Uses pressure sensors mounted inside each wheel to measure real-time tire pressure and transmit data to the vehicle’s computer.
Indirect TPMS: Uses wheel speed sensors from the ABS system to estimate tire pressure based on tire rotation differences.
Both systems are designed to improve vehicle safety and help drivers respond quickly to underinflated tires.
Why the TPMS Warning Light Turns On
The TPMS warning light can activate for several reasons, including:
Low Tire Pressure
Temperature changes, especially cold weather, can cause tire pressure to drop. Even a small decrease can trigger the warning light.
Tire Damage or Leaks
Punctures, valve stem leaks, or worn tires can cause slow air loss.
Tire Rotation or Replacement
After tire service, the system may need to be recalibrated to recognize sensor locations.
Faulty TPMS Sensor
TPMS sensors rely on batteries that typically last 5–10 years. When they fail, the warning light may remain on.
Seasonal Tire Changes
Switching between summer and winter tires can trigger the TPMS light if the system is not reset properly.
How to Reset TPMS After Tire Service or Pressure Changes
In many cases, resetting the TPMS is simple once tire pressure has been corrected. General reset methods include:
Drive the Vehicle
Some systems automatically reset after driving at 40–50 mph for 10–20 minutes once tires are inflated to the correct PSI.
Use the TPMS Reset Button
Many vehicles have a TPMS reset button located under the dashboard or in the glove compartment. With the ignition on, hold the button until the light blinks.
Reset Through the Vehicle Menu
Newer vehicles allow TPMS reset through the infotainment or driver information menu.
Professional TPMS Reset
If the warning light stays on, the system may require specialized diagnostic tools to relearn sensor positions.
Because reset procedures vary by make and model, your owner’s manual provides the most accurate instructions. When in doubt, professional service ensures the system is functioning correctly.
Why Proper Tire Pressure Matters
Maintaining proper tire pressure offers several benefits:
- Improved fuel efficiency
- Even tire wear and longer tire life
- Better handling and braking performance
- Reduced risk of tire blowouts
Ignoring the TPMS warning light can lead to poor vehicle performance and increased safety risks.
Contact Art Morse Auto Group for TPMS Service
If your TPMS warning light won’t reset or continues to come on, the certified technicians at Art Morse Auto Group are here to help. We provide TPMS diagnostics, sensor replacement, tire inflation, oil changes, brake repair, ac repair, and full tire service using manufacturer-approved equipment.
Schedule your service appointment today or visit our Battle Ground, WA, location to ensure your tires and TPMS are working properly.