This is a tire pressure reset tool designed to assist in the sensor relearn procedure. After each tire rotation, tire change, body control module replacement, or tire pressure sensor replacement, the sensor relearning process must be performed to ensure accurate tire pressure readings and proper display. Operation steps: 1. Ensure the vehicle is in TPMS learning state/mode. 2. Following the vehicle manufacturer’s instructions, place the tool near each tire in sequence (front left, front right, rear right, rear left), aligning it with the tire sidewall close to the valve stem, and press the reset button. 3. The green LED (TX light) will illuminate, indicating signal transmission. When the vehicle emits a chirp or horn sound, the matching is successful. 4. Repeat the process for the remaining tires. Specifications: - Compact and portable design - Enables real-time tire pressure signal transmission - Compatible with most vehicles equipped with TPMS systems - Suitable for use on vehicles requiring sensor relearn after tire service - Supports 315 MHz and 433 MHz TPMS systems, including GM models from 2012 and later - Relearn procedure required after tire rotation, sensor replacement, or module replacement - Specialized tool for use with designated diagnostic procedures Package Included: 1 x Tire Pressure Reset Tool