For Opel OBD 2 Function: Use this tool to RESET the 'INSPECTION' & 'OIL SERVICE' reminders on your Reset Inspection Intervall for Opel 15.000 km or 1 year 15.000 km or 2 years 30.000 km or 2 years (LONGLIFE). Suitable for Opel Astra built after 1998, Zafira built after 1998, Corsa built after 2000 . Features : 1. New in box. Includes: Unit with built-in Extension Cable. 2. Small and portable. 3. Plug & Play, easy to use, no batteries needed Workable Model: Operating Instructions: 1 Plug the Device into the OBD2 socket of the car .All LED`s will blink and then stay on . 2 Turn ignition key to enable the board electronic but don`t turn on the motor 3 Press the button for the operation you want to perform .shortly , The LED of the choosen operation will light and the other LED`s will be off .LED`s will perform a light chain which means reset is done.