This tire pressure reset tool is designed for resetting the TPMS (Tire Pressure Monitoring System) after tire rotation, sensor replacement, or module changes. It ensures accurate tire pressure readings and system functionality.Operation Steps: 1. Ensure the vehicle is in TPMS learning mode. 2. Follow the vehicle manufacturers procedure. Position the tool near each tires sidewall close to the valve stem (air inlet), starting with the front left, then front right, rear right, and rear left. Press the reset button for each tire. 3. The green LED (TX light) will illuminate, indicating signal transmission. When the vehicles horn beeps, the matching process for that tire is complete. 4. Repeat the process for all remaining tires.Features: - Compact and portable design - Real-time tire pressure system reset capability - Includes diagnostic sensing function - Compatible with most vehicles equipped with TPMS - For GM vehicles with 315 MHz or 433 MHz TPM systems, this tool supports the Sensor Relearn Procedure required after tire service, sensor replacement, or module changes - Suitable for use on 2012 and later models; compatible with procedures used on 2014 GM vehicles - Note: Only authorized diagnostic tools can access tire pressure sensor data on certain 2012 and newer modelsPackage Included: 1 x Tire Pressure Reset Tool