THINKTOOL Expert 391 is a brand new diagnostic tool with a powerful online programming function. It supports 120+ passenger vehicles, 70+ EV vehicles (with optional EV package), and 150+ heavy-duty vehicles (with optional HML package). Features the new TCOS system, Dual Video Remote Diagnostics, and 41 maintenance reset functions.
The new Expert 391 supports advanced diagnostics functions such as full system scans, actuation tests, ECU coding, and online programming (supported for Audi, BMW, Land Rover, Mercedes-Benz, Nissan, Porsche, Seat, Skoda, Subaru, VW, and more).
Key Advantages:
Superior Hardware: 10.1-inch 1280x800 IPS screen, 4-core MT8766 processor, and 4GB+128GB memory for fast operation.
THINKLINK Lite VCI: Supports CAN 2.0, CAN FD, DOIP, and J2534 diagnostic protocols.
Dual Video Remote Diagnostics: Get cloud-based help via audio/video calls from qualified technicians.
41 Maintenance Resets: Includes Oil Reset, TPMS, SAS, DPF, Gearbox Learn, IMMO, and many more.
Expandable: Supports add-on modules like battery testers, video scopes, TPMS tools, and ADAS calibration.



