1. Introducción
Thank you for choosing the FOXWELL NT726 OBD2 Scanner. This device is a professional, OE-level diagnostic tool designed to assist automotive technicians and enthusiasts in diagnosing vehicle issues efficiently. Based on the Android 9.0 operating system, the NT726 offers comprehensive system diagnostics and a range of essential reset services. This manual provides detailed instructions for the proper setup, operation, and maintenance of your scanner to ensure optimal performance and longevity.
2. Producto terminadoview
The FOXWELL NT726 is a top-tier Android-based scan tool featuring a 5.5-inch LCD touchscreen for intuitive navigation and clear display of diagnostic data. It is equipped with a robust Android 9.0 system and 32GB of memory, ensuring fast and compatible operation. The device supports one-click WiFi updates for lifetime free software enhancements.

Image 2.1: The FOXWELL NT726 diagnostic scanner highlighting its key features including a 5.5-inch touchscreen, Android 9.0 operating system, WiFi connectivity for updates, and 32GB internal memory.
3. Configuración y uso inicial
3.1 Desembalaje y encendido
- Carefully unpack the NT726 scanner and its accessories from the packaging.
- Connect the OBDII cable to the scanner.
- Plug the other end of the OBDII cable into your vehicle's OBDII port, typically located under the dashboard on the driver's side. The scanner will power on automatically.
3.2 WiFi Connection and Updates
- Upon first use, navigate to the 'Settings' menu on the scanner's touchscreen.
- Select 'Wi-Fi' and connect to an available wireless network.
- Once connected, go to the 'Update' icon on the main screen.
- Perform a one-click update to ensure your scanner has the latest software, vehicle coverage, and bug fixes. Regular updates are crucial for optimal performance.
4. Instrucciones de funcionamiento
4.1 Diagnóstico completo del sistema
The NT726 scanner provides comprehensive diagnostic capabilities across all available control modules in a vehicle. This includes, but is not limited to, Engine, Transmission, ABS (Anti-lock Braking System), SRS (Supplemental Restraint System), EPB (Electronic Parking Brake), Immobilizer, IC (Instrument Cluster), DSC (Dynamic Stability Control), HVAC (Heating, Ventilation, and Air Conditioning), TPMS (Tire Pressure Monitoring System), BMS (Battery Management System), SAS (Steering Angle Sensor), Headlamp, DPF (Diesel Particulate Filter), and EVAP (Evaporative Emission Control System).

Image 4.1: Illustration of the extensive ECU modules covered by the NT726 scanner, demonstrating its full system diagnostic capabilities.
Las funciones de diagnóstico clave incluyen:
- Leer códigos: Retrieve Diagnostic Trouble Codes (DTCs) from the vehicle's control modules.
- Códigos claros: Erase DTCs after repairs have been made.
- Datos en tiempo real: View Datos y parámetros del sensor en tiempo real.
- Información de la ECU: Display control unit information such as part numbers and software versions.
4.2 8 Hot Reset Services
The NT726 is equipped with 8 commonly used maintenance and reset functions to address various vehicle service needs:

Image 4.2: Visual representation of the 8 hot reset services available on the FOXWELL NT726 scanner.
- Purga del ABS: Purga el aire del sistema de frenos después de reemplazar el componente.
- Coincidencia del acelerador: Vuelve a aprender la posición del cuerpo del acelerador después de limpiarlo o reemplazarlo.
- Regeneración del DPF: Inicia el proceso de regeneración del filtro de partículas diésel.
- Restablecimiento del EPB: Restablece el freno de estacionamiento electrónico después de reemplazar las pastillas de freno.
- Codificación del inyector: Codifica nuevos números de inyectores en la ECU.
- Reinicio de aceite: Restablece la luz de servicio de aceite y calcula el intervalo óptimo de cambio de vida útil del aceite.
- Restablecimiento de SAS: Calibrates the Steering Angle Sensor after steering system repairs.
- Restablecimiento de TPMS: Restablece el sistema de monitoreo de presión de neumáticos después de la rotación de neumáticos o el reemplazo del sensor.
4.3 Live Data Stream and Analysis
The NT726 allows for a deep dive into auto diagnostics by providing live data streams. This feature enables users to view, graph, record, and playback real-time sensor data, which is crucial for identifying intermittent problems and verifying repairs.

Image 4.3: The NT726 interface demonstrating live data stream capabilities, including graphing, recording, playback, and options for sharing diagnostic reports.
- Graficando: Visualize data parameters over time for easier analysis.
- Registro: Save live data sessions for later review.
- Reproducción: Review recorded data to pinpoint issues.
- Intercambio: Generate and share diagnostic reports via email or other methods.
4.4 Compatibilidad del vehículo
The FOXWELL NT726 offers extensive vehicle compatibility, supporting over 100 vehicle brands and 10,000+ car models manufactured after 1996 and up to 2021 (12V vehicles only). This broad coverage ensures its utility across a wide range of vehicles from various regions including USA, Europe, and Asia.

Image 4.4: A partial list of vehicle manufacturers supported by the NT726, demonstrating its wide compatibility across different regions.
5. Mantenimiento
- Limpieza: Utilice un paño suave y seco.amp cloth to clean the scanner's screen and body. Avoid abrasive cleaners or solvents.
- Actualizaciones de software: Regularly connect the device to Wi-Fi and perform software updates to ensure access to the latest vehicle data, functions, and bug fixes. FOXWELL provides lifetime free WiFi updates for the NT726.
- Almacenamiento: Store the scanner in a dry, cool environment, away from direct sunlight and extreme temperatures. Use the provided protective case (if applicable) to prevent physical damage.
- Cuidado de cables: Inspect the OBDII cable regularly for any signs of wear or damage. Replace if necessary to ensure reliable connection.
6. Solución de problemas
- El escáner no se enciende: Ensure the OBDII cable is securely connected to both the scanner and the vehicle's OBDII port. Verify the vehicle's battery has sufficient charge.
- Error de comunicación con el vehículo: Check that the vehicle's ignition is on. Ensure the OBDII cable is properly connected. Verify the vehicle is OBDII compliant (most vehicles after 1996). Try a different vehicle to rule out scanner issues.
- Error en la actualización del software: Ensure a stable Wi-Fi connection. Check for sufficient storage space on the device. Restart the scanner and try the update again.
- La pantalla no responde: Perform a soft reset by holding the power button (if available) or by letting the battery drain and recharging. If the issue persists, contact FOXWELL support.
7. Especificaciones
| Característica | Especificación |
|---|---|
| Marca | FOXWELL |
| Modelo | NT726 |
| Sistema operativo | Androide 9.0 |
| Mostrar | Pantalla táctil LCD de 5.5 pulgadas |
| Memoria | 32 GB (interno) |
| Conectividad | Wifi |
| Fuente de poder | Vehicle Battery (via OBDII) |
| Volumen del vehículotage | Sólo 12 V |
8. Garantía y soporte
The FOXWELL NT726 scanner comes with lifetime free WiFi updates, ensuring your device remains current with the latest vehicle data and diagnostic functions without additional subscription fees. For technical assistance, warranty claims, or any operational questions not covered in this manual, please contact FOXWELL customer support through their official webSitio web o distribuidores autorizados. Siempre proporcione el modelo y el número de serie de su producto al solicitar asistencia.