The Tire Pressure Monitoring System (TPMS) is a crucial safety feature in modern vehicles, designed to alert drivers when tire pressure falls below a certain threshold. Relearning or reprogramming TPMS sensors is a necessary task when replacing tires, wheels, or the TPMS sensors themselves. This comprehensive guide will walk you through the step-by-step process of relearning TPMS sensors, providing technical specifications and a detailed DIY approach.
Preparation and Accessing the TPMS Menu
Before you begin the relearning process, ensure that your vehicle’s ignition is off and the parking brake is engaged. Additionally, turn off the automatic light control to avoid any interference during the procedure.
Accessing the TPMS menu on your vehicle’s dashboard can vary depending on the make and model. For example, on a 2020 Chevrolet Traverse, you can bring up the tire pressure screen on the Driver Information Center (DIC) and press and hold the “OK” button for about 5 seconds until you see the “relearn” option.
Using a TPMS Reset Tool
To initiate the TPMS sensor reprogramming process, you’ll need a TPMS reset tool, such as the VXDAS Auto Tire Pressure Monitor Sensor TPMS Relearn Reset Activation Tool OEC-T5. These tools typically work by producing a low-frequency transmission that activates the TPMS sensors, causing them to enter a “learn” mode.
The TPMS reset tool works by transmitting a 125 kHz low-frequency signal, which is detected by the TPMS sensor. This signal triggers the sensor to transmit its unique identification (ID) number, allowing the vehicle’s TPMS system to associate the sensor with its corresponding tire location.
Sensor Activation and Reprogramming
To activate the TPMS sensors, hold the reset tool against the tire sidewall, near the valve stem. Press the button on the tool to initiate the activation process. You should hear a horn chirp or other confirmation signal, indicating that the sensor has been successfully activated.
Once the TPMS sensors have been activated, the vehicle’s TPMS system will assign each sensor’s unique ID number to the corresponding tire location. This process is typically done in a specific order, such as left front, right front, right rear, and then left rear.
Technical Specifications of TPMS Sensors
TPMS sensors vary in their technical specifications depending on the make and model of the vehicle. However, some general specifications include:
- Unique ID Number: Each TPMS sensor has a unique ID number that must be programmed into the vehicle’s TPMS system during the reprogramming process.
- Pressure Measurement Interval: TPMS sensors take a pressure measurement sample once every 30 seconds while in stationary mode.
- Pressure Change Threshold: If the tire pressure increases or decreases by more than 1.2 psi from the last pressure measurement, another measurement will occur immediately to verify the change in pressure.
- Sensor Activation: TPMS sensors respond to a low-frequency activation by transmitting in “learn” mode, allowing the vehicle’s TPMS system to identify and associate the sensor with its corresponding tire location.
DIY Guide to Relearning TPMS Sensors
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Purchase a TPMS Reset Tool: Ensure that you choose a TPMS reset tool compatible with your vehicle’s make and model. These tools can be found on Amazon or other online retailers.
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Follow the Instructions: Carefully read the instructions that come with your TPMS reset tool. These instructions will provide specific details on how to use the tool to reprogram your TPMS sensors.
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Access the TPMS Menu: Follow the steps outlined earlier to access the TPMS menu on your vehicle’s DIC or instrument cluster.
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Activate the TPMS Sensors: Use the TPMS reset tool to activate each TPMS sensor in the correct order, as specified in your vehicle’s instructions. Be sure to follow the instructions carefully to avoid any mistakes.
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Confirm the Reprogramming: Once the reprogramming process is complete, confirm that the TPMS warning light has turned off and that the sensors are functioning properly.
By following this comprehensive guide, you can successfully relearn your TPMS sensors and ensure that your vehicle’s tire pressure monitoring system is working correctly.
References:
– TPMS Relearn Procedure FYI
– GM TPMS Setup & Relearn Procedures
– TPMS Sensor Relearn Procedure
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