ELMScan Toyota is a professional diagnostics application for Toyota, Lexus, and Scion vehicles manufactured between 1998 and 2010. Developed by ElmScan Software, this free Android app provides a comprehensive list of supported control units, including engine, transmission, immobilizer, and rain sensor.

To use the app, you need an ELM327. Once connected, you can read vehicle information such as model code, engine size, VIN, and Calibration ID. You can also read and clear diagnostic trouble codes, view real-time parameters like vehicle speed, engine RPM, coolant temperature, and fuel corrections, perform active tests and control actuators. The app supports numeric and graphic representations of real-time parameters and allows you to reset ECU adaptations.