Description
The THINKTOOL Expert 191 is THINKCAR’s latest advanced diagnostic tool, featuring a brand new user interface and sleek, lightweight design. With a large 10-inch screen, bi-directional control, and support for CAN-FD and DOIP protocols, it delivers professional-grade diagnostics for modern vehicles.
Screen: 10″
Storage: 128GB ROM / 4GB RAM
Maintenance Functions: 35
Battery: 12600mAh / 3.8V
Operating System: TCOS
Product Description
The THINKTOOL Expert 191 is a best-value bi-directional scanner that combines advanced diagnostic capabilities with an intuitive, user-friendly interface. As a 2025 new arrival, it represents THINKCAR’s latest generation of automotive diagnostic tools — lighter, thinner, and more powerful than ever before.
What’s New
The THINKTOOL Expert 191 introduces several key upgrades:
Brand new user interface and design — lighter and thinner for improved handling
Support for CAN-FD and DOIP protocols — essential for diagnosing modern vehicles
Larger 10-inch screen — clear, detailed views of diagnostic data
Expanded functionality — ready for additional modules and accessories
Advanced Diagnostic Functions
The Expert 191 delivers a comprehensive range of diagnostic capabilities:
Full system scan — complete vehicle health check across all available ECUs
Bi-directional control — activate components like windows, lights, and actuators directly from the scanner
Advanced coding — perform module coding and adaptations
Special functions — access maintenance resets and service procedures
Key Features
35 Maintenance Functions
Includes oil reset, brake-pad reset, steering angle calibration, battery matching, ABS bleeding, throttle adaptation, DPF regeneration, airbag reset, injector reset, and many more essential service procedures.
10-Inch Large Screen
The high-resolution 10-inch display provides clear, easy-to-read data and comfortable operation during extended diagnostic sessions.
Bi-Directional Control
Go beyond reading codes — actively test components and systems to verify functionality and pinpoint issues faster.
Expansion Functional Module Support
The Expert 191 is designed to grow with your needs. It supports a range of additional modules:
THINKCAR TPMS programmer
THINKCAR video scope
THINKCAR scope box
THINKCAR printer (USB)
THINKEASY battery tester
Who Is the THINKTOOL Expert 191 For?
The Expert 191 is ideal for:
Professional workshops needing advanced diagnostic capabilities
Independent mechanics who work on a wide range of vehicle makes and models
Technicians requiring bi-directional control for component testing
Workshops looking for future-proof tools with expandable functionality
Service centres handling modern vehicles with CAN-FD and DOIP protocols
Vehicle Coverage
The THINKTOOL Expert 191 supports all major OBD2-compliant passenger vehicles, with advanced protocol support including CAN-FD and DOIP for diagnosing modern vehicles.
What’s in the Box
THINKTOOL Expert 191 main unit
OBD2 diagnostic cable
USB charging cable
Power adapter
Quick start guide
Carry case













