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

Is the Platinum 399 Worth It for Professional Shops?

The ThinkCar Platinum 399 is the flagship 14-inch diagnostic tablet with ECU coding, bi-directional control, and the largest display in the ThinkCar lineup. For professional shops handling complex diagnostics daily, it provides dealer-level capability without annual subscription costs.

The ThinkCar Platinum 399 is the largest tablet in the Platinum line — a 14-inch professional diagnostic scanner designed for high-volume shops and dealership-level work. If you need a screen big enough to read wiring diagrams, live data graphs, and topology maps without squinting, this is the tool. It supports full bi-directional control, ECU coding, and online programming across passenger and commercial vehicles.

At 14 inches, the 399 gives you workspace that smaller tablets simply cannot. When you're graphing multiple PIDs simultaneously or reviewing a pre/post scan report with a customer, the screen real estate makes a real difference. The tablet runs on Android with enough processing power to handle complex diagnostic routines without freezing mid-scan.

What You Can Do With It

Beyond standard code reading and clearing, the Platinum 399 supports ECU coding — letting you match replacement modules, enable or disable features, and program new keys on supported vehicles. The bi-directional controls let you command actuators directly: cycle ABS valves, fire injectors individually, test blend door motors, and run system-specific self-tests. You get 41 maintenance resets covering everything from oil service intervals to DPF regeneration to battery registration.

• Full system bi-directional diagnostic scanning
• ECU coding and online programming
• 41 maintenance reset functions
• ADAS calibration support (with ThinkADAS accessory)
• Built-in TPMS service antenna
• Remote diagnostics capability via THINKLINK
• Topology module mapping
• Enhanced diagnostic reports with pre/post scan
• J2534 and CAN FD protocol support

Hardware

• 14-inch HD touchscreen — the largest in the ThinkCar lineup
• Android operating system
• 8GB RAM / 256GB storage
• 13MP rear camera
• Dual WiFi and Bluetooth
• Long-lasting rechargeable battery

Coverage

Full passenger vehicle coverage with 2-year software updates. Optional heavy duty coverage for commercial trucks. Compatible with ThinkADAS Elite for ADAS calibration, ThinkPROG 3 for key programming, and all ThinkCar modular accessories.

Why Buy From Us?

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

Questions? Call our diagnostic experts: (866) 217-0063 — we'll walk you through the differences between the 394, 399, and S20 so you pick the right one.