functions activation, reset and matching on the vehicles which comes with the tire pressure Sensors up to December, 2017 year. the vehicle is the TPMS Learn mode,and follow the service procedure.Hold tool against the sidewall of the tire,near the valves stem. Depress the button on the top of the device while holdings the tool against the tire sidewall. When the car horn sounds, press the button belows the device. Package includes: 1x TPMS Relearn Tool