OEM Diagnostic
Techstream is Toyota's official dealer diagnostic software for Toyota, Lexus, and Scion vehicles. Running on Windows with a Mongoose MFC or Toyota MVCI J2534 interface, it provides full-system DTC read/clear, live data, freeze-frame, bi-directional active tests, and a wide set of service and customization functions — such as hybrid battery diagnostics, zero-point/steering-angle calibration, brake-bleed routines, key/immobilizer registration, and dealer "Customize" settings. It also supports ECU reflashing/calibration updates on supported models. Independent Toyota specialists use Techstream where generic scanners cannot reach Toyota-specific systems or perform coding. It is the reference tool across a very large range of Toyota/Lexus model years and hybrid systems, and is regularly updated with new vehicle definitions.
Techstream is the OEM tool for Toyota diagnosis, coding, and flashing; Softechpro Solutions complements it at the file level with DPF/EGR/DTC-off edits and Stage tuning plus checksum correction applied to the ECU image, not through Techstream's dealer menus.
See Softechpro plansTry the file service