GreenMax Reset Check Engine OBD2 Scan Tool - Newest Release-summer 2015- BlueTooth Android/WindowsPhone ONLY EASY. Use your smart device to reset the check engine light. Bluetooth enabled Android/Windows Phone. POWERFUL. Just install one of several compatible apps and you have a powerful OBDII code reader! SAVES MONEY. Helps you diagnose and fix your own engine problems. INDUSTRY STANDARD. Many apps available for free or for purchase separately. Not for use with iOS devices. QUALITY. Buy with confidence! USA based Quality Assurance Program.