Thinkcar Platinum 399 14-Inch Professional Diagnostic Tablet - Bi-Directional OBD2 Scanner with ECU Coding

The ThinkCar Platinum 399 is ThinkCar's 2024 flagship professional diagnostic tablet, built around a 14-inch HD IPS touch screen and the new TCOS operating system. This is the top of the Platinum line — the tool you reach for when a shop needs OE-level coverage on passenger cars, electric vehicles, and heavy-duty trucks from a single tablet. ECU coding, online programming, bi-directional control, full-system diagnostics, and 41 maintenance reset functions are all built in, and the tablet supports two simultaneous vehicle diagnostic sessions when a second VCI is added.

OE-Level Diagnostics on Passenger, EV, and Heavy Duty

The Platinum 399 covers full-system diagnostics across all major control modules — engine, transmission, ABS, SRS, body, chassis, infotainment, and ADAS. Capabilities include:

• ECU coding and online programming
• Bi-directional active tests and actuation control
• Advanced coding and adaptations
• 41 maintenance reset functions (oil reset, EPB, SAS, DPF, throttle, BMS, injector coding, gearbox learning, and more)
• Live data graphing with split-screen module view
• Read and clear DTCs across every available system
• Freeze frame data capture

Dual Vehicle Diagnostics

With the included THINKLINK PRO VCI plus an optional second VCI, the Platinum 399 can run diagnostic sessions on two vehicles at the same time. The split-screen interface lets a technician monitor live data, modules, and active tests on one bay while a coding or programming job finishes on another — useful for high-volume shops that don't want a $5,000 tablet sitting idle during long routines.

14-Inch HD Display and TCOS System

The 14-inch IPS touch screen is the largest in ThinkCar's lineup, giving room for split-screen multitasking, full wiring diagrams, and side-by-side data PID comparisons without zooming. TCOS is ThinkCar's purpose-built diagnostic OS with a redesigned UI for the 399 — menus, vehicle selection, and module navigation are reorganized for fewer taps to reach common functions. VCI status, battery voltage, and connection data sync to the tablet in real time.

CAN FD and DoIP Protocol Support

The THINKLINK PRO VCI supports the modern communication protocols required for late-model and EV diagnostics, including CAN FD (CAN with Flexible Data-Rate) for newer GM, Ford, and Stellantis platforms, and DoIP (Diagnostics over Internet Protocol) for BMW, Jaguar Land Rover, Mercedes-Benz, Volvo, VAG, and Tesla. Legacy CAN, K-Line, J1850, and J1939/J1708 heavy-duty protocols are also covered.

Software Coverage and Updates

• Passenger Software: 2-year free update included from date of activation
• EV Software: Optional — includes Tesla coverage, purchased via T-Code through your authorized distributor
• HD (Heavy Duty) Software: Optional — purchased via T-Code through your authorized distributor

After the included 2-year window, passenger software updates are available through annual renewal.

Expandable Functions and Additional Services

The Platinum 399 platform supports add-on modules and service packages so a shop can grow capability without replacing the tablet:

• Battery test module
• Video scope (borescope)
• Wireless printer
• Scope box (oscilloscope)
• ADAS calibration services
• Comprehensive TPMS service
• Key programming services
• Video remote diagnostics (call out for OE-level support on complex jobs)

Hardware Specifications

• Operating System: TCOS System
• Screen: 14-inch HD IPS touch display
• Storage / Memory: 256 GB ROM / 8 GB RAM
• Battery: 22,400 mAh / 3.8 V
• Charging: 45W fast-charge dock — full charge in approximately 2 hours
• Rear Camera: 20 MP
• Front Camera: 8 MP
• VCI: THINKLINK PRO (Bluetooth + USB)
• Connectivity: Wi-Fi, Bluetooth, USB

Who the Platinum 399 Is For

This is a tool for independent shops, advanced workshops, dealership techs running a side bay, and mobile diagnostic specialists who need one tablet that handles passenger, EV, and heavy-duty work without juggling three platforms. The dual-vehicle capability and 14-inch screen make it especially well-suited to shops where the diagnostic tablet is the bottleneck — programming sessions and ECU coding jobs no longer block the rest of the bay's workflow. If a shop is currently running an older 10-inch tablet and waiting on long programming routines, the 399 is the upgrade path.

How the Platinum 399 Compares to Lower Platinum Models

The Platinum line includes several tiers, and the 399 sits at the top. Compared to the smaller Platinum tablets, the 399 adds the 14-inch display, 256 GB of storage (versus 128 GB on mid-tier models), 8 GB of RAM, the 22,400 mAh extended-runtime battery, the 45W fast-charging dock, dual-VCI diagnostics, and the 20 MP rear camera for documenting damage, VIN plates, and connector locations. The TCOS UI, full CAN FD and DoIP coverage, and the 41 maintenance reset library are shared across the Platinum line, so a shop already familiar with a Platinum 199 or 299 will be productive on the 399 within minutes.

Warranty and Support

The Platinum 399 ships with the full ThinkCar manufacturer warranty against defects in materials and workmanship. Software support, vehicle coverage questions, and diagnostic walk-throughs are handled by our trained staff — call before, during, or after the sale. Tech support is free for the life of the tool.

What's in the Box

• Platinum 399 14-inch diagnostic tablet
• THINKLINK PRO VCI
• 45W fast-charging dock
• OBD II main cable
• Power adapter and USB cable
• Carry case
• 2-year passenger software subscription (activated at registration)

Why Buy From Us?

• Authorized ThinkCar distributor
• Free ground shipping
• Free tech support from trained diagnostic staff
• Full manufacturer warranty

Questions? Call our diagnostic experts: (763) 703-0707 — trained staff available to help you choose the right tool for your shop.