Toyota Techstream is the official diagnostic and reprogramming platform for Toyota, Lexus and Scion. It combines fault-code functions, live Data List, Active Tests, utility procedures (e.g., key registration, TPMS ID write, service resets), and—when paired with a valid Professional Diagnostic TIS subscription—ECU calibration updates.



What’s New in v18.00.008

• Coverage: All 2023 and earlier models fully supported; initial 2024 coverage (e.g., Lexus NX, Toyota bZ4X).
• New utility: MT/CVT/HEV Vehicle Setting Initialization for 2023~ Yaris BSM (Master/Slave).

Known Issue (per Toyota)]
Techstream up to v18.0 does not communicate with the 2023 GR Corolla EMPS system.

Highlights

• Read/clear DTCs with freeze frame and health checks
• Live data graphing and snapshot save/replay
• Active Tests and guided utilities (e.g., ABS bleed, steering angle, immobilizer/key where applicable)
• ECU reprogramming with valid TIS subscription and supported hardware
• Generic OBD-II and CAN functions

Compatibility
Official support: Windows 10 and Windows 11.
Tested in-house on Windows 10 LTSC (2019). If using older Windows, verify in your environment.

Minimum System Requirements (per Toyota)]

• CPU: 1 GHz or faster
• RAM: 2 GB (Win10) / 4 GB (Win11)
• Disk: 32 GB (Win10) / 64 GB (Win11) available
• Display: 800×600 or higher

Notes
For ECU programming and full diagnostic access, a Professional Diagnostic TIS subscription and supported Techstream hardware (ADVi or Techstream Lite with J2534/VCI) are required.

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Disclaimer
Information here is compiled from public sources for educational purposes. Any files, if referenced, are hosted by third parties; our forum does not store or distribute software. Use only with vehicles you are authorized to service and follow the official EULA and local laws.

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