1. Introduction
This manual provides detailed instructions for the operation and maintenance of the Foxwell NT680 Pro All System Diagnostic Scan Tool. The NT680 Pro is a professional handheld diagnostic tool designed for comprehensive system coverage across a wide range of vehicle manufacturers. It offers advanced features for diagnosing and servicing various automotive systems.
Package Contents:
- Foxwell NT680 Pro Scan Tool
- 1.5m OBD connection cable (16-pin EOBD / OBD-II connector)
- USB update cable
- Quick installation guide
- 16GB Micro SD Card (pre-installed in tool)
- Tough Plastic Carrying Case
2. Product Overview
The Foxwell NT680 Pro features a robust design suitable for workshop environments, equipped with a clear color display and intuitive navigation buttons.

Figure 2.1: Front view of the Foxwell NT680 Pro displaying the main menu with options like AutoVin, EOBD, Diagnostic, Maintenance, Settings, Data Manager, and Update.
Key Components:
- 4.3-inch TFT Color Display: Provides clear visibility of diagnostic data and menu options.
- Navigation Buttons: Directional arrows, F1-F3 function keys, Back, Enter, Help, and Power buttons for easy menu navigation and selection.
- OBD-II Connector Port: Located at the top of the device for connecting to the vehicle's diagnostic port.
- USB Port: For connecting to a computer for software updates.
3. Setup
Follow these steps to prepare your Foxwell NT680 Pro for first use.

Figure 3.1: The Foxwell NT680 Pro, OBD-II cable, and USB cable neatly stored within its protective carrying case.
- Unpack the Device: Remove the NT680 Pro and all accessories from the carrying case.
- Micro SD Card: Ensure the 16GB Micro SD card is properly inserted into the device. It comes pre-installed.
- Power On: Connect the OBD-II cable to the device and then to the vehicle's OBD-II port. The device will power on automatically. If not, press the power button.
- Language Selection: Upon first boot, you may be prompted to select your preferred language.
- Software Registration and Updates: It is recommended to register your device on the Foxwell website and perform a software update to ensure you have the latest vehicle coverage and functions. Use the provided USB cable to connect the device to a computer with internet access.
4. Operating Instructions
This section details how to navigate the NT680 Pro and perform various diagnostic functions.
4.1. Basic Navigation
- Use the Up/Down/Left/Right arrow keys to move the cursor.
- Press Enter to confirm a selection or enter a menu.
- Press Back to return to the previous screen or exit a function.
- The F1, F2, F3 keys perform context-sensitive functions displayed on the screen.
- Press Help for on-screen assistance.
4.2. Connecting to a Vehicle
- Locate the vehicle's 16-pin Data Link Connector (DLC), usually under the dashboard on the driver's side.
- Ensure the vehicle's ignition is in the 'ON' position (engine can be off or running, depending on the test).
- Connect the NT680 Pro's OBD-II cable to the vehicle's DLC. The tool will power on.
4.3. Performing a Diagnostic Scan
From the main menu, select 'Diagnostic' to begin. The tool will automatically identify the vehicle's VIN (AutoVin) or allow manual selection.

Figure 4.1: The NT680 Pro displaying a list of control modules available for diagnosis, such as Engine, Airbag, AIRCON, BCM, ABS/ESP, and TPMS.
- AutoVin: Automatically identifies vehicle information for quick diagnostics.
- EOBD: Accesses generic OBD-II functions for engine and emissions-related diagnostics.
- Diagnostic: Allows selection of specific vehicle manufacturers and systems (e.g., Engine, ABS, Airbag, Transmission, BCM, etc.) for in-depth scanning.
4.4. Reading and Clearing Trouble Codes
After selecting a system, you can read Diagnostic Trouble Codes (DTCs).

Figure 4.2: The NT680 Pro displaying a list of active and historical trouble codes with their descriptions, such as P0030 and P0130.
- Read Codes: Displays current, pending, and historical DTCs with their descriptions.
- Clear Codes: Erases DTCs from the vehicle's computer. Ensure the underlying issue is resolved before clearing codes to prevent recurrence.
4.5. Live Data Stream
The tool can display real-time sensor data from various systems, which is crucial for diagnosing intermittent problems.
- Select 'Live Data' from the system menu.
- Choose parameters to view. Data can be displayed in text, graph, or merged graph format.
- The tool can also record live data for later review.
4.6. Advanced Service Functions (Maintenance Menu)
From the main menu, select 'Maintenance' to access special functions:
- Electronic Park Brake (EPB) Service: Safely performs brake pad replacement on vehicles with electronic parking brakes.
- Oil Service Reset: Resets the oil service light and sets new oil change intervals.
- Diesel Particulate Filter (DPF) Regeneration: Initiates forced DPF regeneration to clear blockages.
- Battery Configuration: Registers new batteries and performs battery management system resets.
- Steering Angle Sensor (SAS) Calibration: Calibrates the steering angle sensor after repairs.
- Throttle Position Sensor (TPS) Adjustment: Adjusts the throttle body position.
- Continuous Variable Transmission (CVT) Functions: Performs specific maintenance for CVT systems.
5. Maintenance
Proper care ensures the longevity and reliability of your NT680 Pro.
- Cleaning: Use a soft, damp cloth to clean the device. Avoid abrasive cleaners or solvents.
- Software Updates: Regularly update the software to ensure compatibility with new vehicle models and access to the latest diagnostic functions. Connect the device to a computer via the USB cable and use the Foxwell update client software.
- Storage: Store the device in its protective carrying case in a dry, clean environment when not in use.
6. Troubleshooting
If you encounter issues with your NT680 Pro, refer to the following common problems and solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Loose OBD-II connection; vehicle's ignition off; vehicle battery low. | Ensure OBD-II cable is securely connected. Turn vehicle ignition to 'ON'. Check vehicle battery voltage. |
| Communication error with vehicle. | Incorrect vehicle protocol selected; faulty OBD-II cable; vehicle's ECU issue. | Verify vehicle information. Try another vehicle to test the tool. Check for damaged OBD-II cable. |
| Software update fails. | Poor internet connection; incorrect update software; insufficient storage on SD card. | Ensure stable internet connection. Use the official Foxwell update tool. Check SD card space. |
| Screen freezes or device is unresponsive. | Software glitch; low power. | Disconnect from vehicle, then reconnect. If issue persists, perform a hard reset (if applicable, refer to quick guide). |
7. Specifications
- Display: 4.3-inch TFT color display (480 x 272 pixels)
- Operating System: Windows 7 (internal system for updates)
- Power Source: 8-18 Volts via vehicle battery
- Working Temperature: 0 to 60°C (32 to 140°F)
- Storage Temperature: -20 to 70°C (-4 to 158°F)
- Dimensions: Approximately 200 x 110 x 40 mm
- Weight: Approximately 1.8 kg
- Supported Protocols: OBD-II, EOBD, and various manufacturer-specific protocols
8. Warranty and Support
The Foxwell NT680 Pro comes with free lifetime software updates after registration, ensuring your tool remains current with the latest vehicle data and functions.
For technical support, warranty claims, or further assistance, please refer to the contact information provided in your quick installation guide or visit the official Foxwell website.







