Description
The THINKCAR T391 is a new-generation professional automotive diagnostic platform developed for workshop technicians, diagnostic specialists, auto electricians and multi-brand repair centres. THINKCAR’s T391 documentation identifies it as a 2025-developed diagnostic platform built around the company’s TCOS operating system, a rugged 10.1-inch tablet and an intelligent VCI with its own 2.8-inch display.
It provides OE-level full-system diagnostics, bi-directional/active testing, ECU coding and data-writing functions, programming capability on supported applications, system topology, intelligent VIN identification, remote diagnostics/programming and 41 maintenance functions. It also supports expansion for TPMS, ADAS, EV battery diagnostics and other workshop applications.
An important distinction: this section covers the standard T391. THINKCAR also offers a T391 EV, which is a separate EV-oriented configuration with dedicated high-voltage battery and EV software coverage.
Specifications
| Technical Specifications | |
| Specification THINKCAR T391 | |
| Product Type Professional multi-system automotive diagnostic platform | |
| Operating System THINKCAR TCOS | |
| Main Display 10.1-inch touchscreen | |
| Display Resolution 1280 × 800 | |
| RAM 4 GB | |
| Internal Storage 128 GB | |
| Rear Camera 13 MP with flash | |
| Battery 12,600 mAh / 3.8 V | |
| Charging 5 V / 2.5 A | |
| Tablet Dimensions 280.8 × 191.3 × 33 mm | |
| Tablet Weight Approx. 1.54 kg | |
| USB USB + USB Type-C | |
| Wi-Fi Yes | |
| Bluetooth Yes | |
| Adjustable Stand Yes | |
| Full-System Diagnostics Yes | |
| Bi-Directional / Active Test Yes | |
| ECU Coding/Data Writing Yes, vehicle-dependent | |
| ECU Programming Supported in applicable functions/vehicles | |
| Remote Programming Yes, through supported remote service | |
| System Topology Yes | |
| AutoVIN / Smart Scan Yes | |
| Camera VIN Recognition Yes | |
| Maintenance Functions 41 | |
| CAN FD Supported | |
| DoIP Supported | |
| J2534 Supported by applicable VCI/workflow | |
| ADAS Supported with additional calibration equipment/activation | |
| TPMS Expandable with optional THINKCAR TPMS Tool | |
| EV Battery Diagnosis Available through appropriate T391/EV configuration and packages | |
| Passenger Vehicles Primary standard configuration | |
| EV Software Optional / T391 EV configuration | |
| Heavy-Duty Software Market/package dependent | |
| Operating Temperature -10°C to 50°C | |
| Storage Temperature -20°C to 60°C |
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