10+ OBD2 FUNCTIONS: this scanner provides all OBD2 functions for vehicles compatible with OBD/EOBD/CAN (Controller Area Network) protocol. The most commonly used OBD features include reading and erasing DTCs, I/M readiness, graphic data stream, freeze frame, O2 sensor test, on-board monitor test, EVAP test, and vehicle information ONE-CLICK SMOG CHECKER: I/M readiness button checks the exhaust fumes to help automobiles pass emissions tests with one click FREE SOFTWARE UPDATE: this code reader can be upgraded for free, simply connect the device to a computer and install the updates through TOPDON's website. Scanners with similar features usually require yearly subscriptions EASY TO USE: plug the connector into the 16-pin DLC, turn on the ignition, and the scanner will automatically connect to the vehicle, displaying the main menu for easy navigation MULTI-LANGUAGE: both the menu and DTC definitions are available in 7 languages English, French, German, Italian, Spanish, Portuguese, Japanese. WIDE COMPATIBILITY: this OBD2 code reader works on most US-based cars since 1996, EU-based cars after 2000, and Asian-based cars after 2008. Our hotline provides 24-hour technical support for prompt problem resolution at support@topdon.com