THINKCAR ThinkTool Expert 399 – 14-Inch AI Professional Diagnostic Platform
The THINKCAR ThinkTool Expert 399 is THINKCAR's flagship diagnostic tablet, built for workshops that want one serious, expandable system. A 14-inch 2.5K IPS display, premium hardware, the ThinkLink Pro VCI and the TCOS platform bring passenger vehicle, EV and heavy-duty diagnostics together, with AI-assisted diagnosis and support for two vehicles at once.
Who It Suits
Busy multi-bay and specialist workshops that want broad passenger, EV and commercial coverage in one tablet, and room to add ADAS, TPMS, key programming and other modules.
Advanced Diagnostic Capability
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OE-level full-system diagnostics: scan systems, read and clear fault codes, view live data and carry out active tests
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Bi-directional control and special functions: command components and run service functions on compatible vehicles
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Advanced coding and supported online programming: go deeper into modern vehicle systems where the vehicle supports it
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One platform for three vehicle types: passenger, EV (including Tesla software) and heavy-duty software, each with two years of free updates
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AI-assisted diagnostics: TCOS includes AI functions that guide technicians through fault finding
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Dual-vehicle diagnostics: with an additional compatible VCI (sold separately) two vehicles can be diagnosed side by side
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Split screen: VCI data syncs to the tablet in real time for side-by-side viewing
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Video remote diagnostics: connect with THINKCAR experts for live help
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Integrated maintenance resets: 48 resets listed by THINKCAR
ThinkLink Pro VCI
The included ThinkLink Pro supports CAN FD, DoIP, J2534 and RP1210, along with SAE J1850, ISO 9141, ISO 14230 (KWP2000), ISO 15765 (CAN), ISO 14229 (UDS), SAE J1939 and more, for modern passenger and commercial vehicles.
Expandable Workshop Platform
Supports ADAS calibration services, comprehensive TPMS services, key programming, battery testing, endoscope, printer and oscilloscope modules. These are sold separately unless stated.
Built for the Busiest Bays
The Expert 399 is THINKCAR's flagship tablet, designed to sit at the centre of a workshop's diagnostic setup. The large 14-inch 2.5K display gives plenty of room to show live data, module lists and repair menus clearly, and the octa-core processor with 8GB RAM and 256GB storage keeps the TCOS platform responsive.
Passenger, EV and Heavy-Duty in One Tablet
Passenger, heavy-duty and EV software (including Tesla) is included with two years of free updates, so mixed workshops can serve cars, light commercials and electric vehicles from the same tool. The ThinkLink Pro VCI supports CAN FD, DoIP, J2534 and RP1210 for modern passenger and commercial vehicles.
Two Vehicles at Once
With an additional compatible VCI (sold separately), the Expert 399 can diagnose two vehicles at the same time. Split-screen view synchronises VCI data to the tablet in real time, so data and modules can be compared side by side.
Tough Enough for the Workshop
The titanium alloy body is just 8.15mm thick and has passed a 1.2m drop test. A 22,400mAh battery covers long shifts, and the included charging stand brings a full charge in about 2 hours.
Technical Specifications
- Operating system: TCOS (Android-based)
- Processor: octa-core, up to 2.2GHz
- Display: 14-inch IPS touchscreen, 2560 x 1600
- Memory: 8GB RAM, 256GB storage
- Battery: 22,400mAh, 3.8V
- Cameras: 20MP rear, 8MP front
- Body: titanium alloy, 8.15mm thick, passed 1.2m drop test
- Charging: fast-charging stand included, full charge in about 2 hours
- Diagnostic interface: ThinkLink Pro
Package Contents
- ThinkTool Expert 399 tablet and charging stand
- ThinkLink Pro VCI
- OBD diagnostic cable and OBD adapter
- Cigarette lighter cord and clipper cable
- Fuses (AC250V/5A, 5 x 20mm and 6 x 30mm)
- Adapters: BMW-20, BZ-38, TA-17, TA-22, HA-3, G/A-12, M/H-12+16, CR-6, NN-14+16, FT-3, CAT-9 (HD), OBD-9 (HD) and OBD-6 (HD)
- Ethernet cable, programming cable, Type-A to Type-C USB cable and mini-HDMI to HDMI cable
- Charging cable and power adapter with US, UK and EU plugs
- Quick start manual and packing list
The additional VCI for dual-vehicle diagnosis is not included.
Software Updates & Support
Includes two years of free updates for passenger, HD and EV software. Coverage and functions vary by vehicle make, model and year, so contact us with your vehicle details to confirm before purchase.
