Thinkcar Thinktool Expert 391

The Future of Professional Diagnostics – THINKCAR THINKTOOL Expert 391

The THINKCAR THINKTOOL Expert 391 is not just another scan tool — it is a complete workshop diagnostic platform. Designed for professional automotive technicians, fleet managers, and advanced repair workshops, this tool combines dealer-level diagnostic capability with the flexibility of a connected, cloud-powered device.

TCOS Operating System – A Smarter Diagnostic Experience

The Expert 391 runs on THINKCAR’s newly developed TCOS system, purpose-built for automotive diagnostics. The interface is clean, intuitive, and optimized for speed — reducing the time it takes to navigate between systems, run scans, and access service functions. Whether you’re a seasoned technician or stepping up from an entry-level tool, TCOS makes every job feel effortless.

OE-Level Full System Diagnostics

This tool goes far beyond reading and clearing fault codes. The Expert 391 provides OE-level full system diagnostics including:

• Full system scan across all vehicle ECUs
• Live data stream, freeze frame, and data comparison
• Actuation tests and bi-directional controls
• ECU coding and adaptations
• Online ECU programming

No need for brand-specific dealer tools – the Expert 391 gives your workshop dealer-grade access at a fraction of the cost.

Powerful Online ECU Programming

One of the Expert 391’s standout capabilities is online ECU programming, supported for a wide range of global brands including Audi, BMW, Hyundai, Jaguar, KIA, Land Rover, Mercedes-Benz, Nissan, Porsche, Renault, SEAT, Skoda, Subaru, Volkswagen, SAIC MG, Maxus, Honda, Sprinter, and more — with additional brands being added regularly through software updates.

Dual Video Remote Diagnostics – Expert Help When You Need It

Through the THINKCAR cloud platform, the Expert 391 connects you to a network of qualified cloud technicians via audio or video call. Get real-time assistance for complex jobs including ECU programming, anti-theft key matching, ADAS calibration, advanced coding, and fault diagnosis — right from inside your workshop.

THINKLINK Lite VCI – Multi-Protocol Connectivity

The included THINKLINK Lite VCI supports all major vehicle communication protocols: CAN 2.0, CAN FD, DoIP, and J2534 Pass-Thru. This ensures wide and reliable vehicle coverage across passenger cars, electric vehicles, and heavy-duty commercial vehicles — over 300 vehicles in total across all available packages.

41 Maintenance & Reset Functions

The Expert 391 covers 41 essential service and reset functions, including: Oil Reset, EPB (Electronic Parking Brake), DPF Regeneration, EGR Adaptation, BMS Reset, TPMS Reset, SAS (Steering Angle Sensor), Throttle Adaptation, Injector Coding, ABS Bleeding, Gearbox Adaptation, Window Calibration, Sunroof Calibration, Seat Calibration, Stop/Start Reset, Transport Mode, ODO Meter Correction, A/F Reset, Suspension Reset, and many more.

Expandable Modular System

The Expert 391 is designed to grow with your workshop. Via USB or Bluetooth, it connects to THINKCAR’s range of expansion modules including:

• TPMS Activation & Programming Tool
• Video Scope / Endoscope
• Oscilloscope Box
• THINKEASY Battery Tester
• PROG Key Programmer
• ADAS Calibration System

One tablet. Unlimited workshop capability.

Superior Hardware Built for Daily Professional Use

Powered by a high-performance MT8766 Quad-core processor with 4GB RAM and 128GB internal storage, the Expert 391 handles large data streams and multi-system scans without lag. The 10.1-inch IPS touchscreen delivers sharp, clear visuals at 1280×800 resolution. The 13MP rear camera with flash allows you to document vehicle conditions, and the 12,600mAh battery ensures all-day use on a single charge.

Dual Wi-Fi support means faster downloads, quicker updates, and a more stable remote connection.