1. Introduction
This manual provides comprehensive instructions for the setup, operation, maintenance, and troubleshooting of your TomTom ONE N14644 Global Positioning System (GPS) device. Designed for automotive use, this device assists with navigation by providing detailed maps and voice guidance.
2. Product Overview
The TomTom ONE N14644 is a compact GPS receiver featuring a 3.5-inch touchscreen display. It is designed for easy integration into vehicles.

Figure 2.1: Front View of the TomTom ONE N14644. This image displays the front of the TomTom ONE N14644 GPS device, featuring its 3.5-inch screen and the "TomTom" logo centered below the display.

Figure 2.2: Back View of the TomTom ONE N14644. This image shows the rear of the TomTom ONE N14644 GPS device, highlighting the integrated speaker grille with a hand logo, and various regulatory markings and ports at the bottom edge.

Figure 2.3: TomTom ONE N14644 with OEM Car Charger. This image presents the TomTom ONE N14644 GPS device alongside its included OEM car charger and USB cable, illustrating the complete package for in-vehicle use.
3. Setup
3.1 Charging the Device
Before initial use, ensure your TomTom ONE N14644 is fully charged. Connect the provided OEM car charger to the device and plug it into your vehicle's cigarette lighter socket. The device is powered via the automobile engine when connected. A full charge typically provides up to 3 hours of battery life.
3.2 Mounting the Device
The TomTom ONE N14644 is designed for windshield mounting. Attach the suction cup mount (sold separately or included with specific kits) to a clean, smooth area of your windshield, ensuring it does not obstruct your view. Secure the device onto the mount.
3.3 Initial Power On and Configuration
- Press and hold the power button until the TomTom logo appears.
- Follow the on-screen prompts to select your language, region, and other initial settings.
- You can save a home address using the "Favorites" feature for quick navigation to your primary destination.
3.4 Connecting to TomTom Home
The device is compatible with TomTom Home, a desktop application that allows you to manage data, update maps, and access additional services. Connect your device to a computer using a USB cable and follow the instructions provided by the TomTom Home software.
4. Operating the Device
4.1 Basic Navigation
- Entering a Destination: Tap the screen to access the main menu. Select "Navigate to..." and choose your preferred method (e.g., Address, Point of Interest, Favorites).
- Map Display: The device displays maps with detailed destination information, including your current position, the next major road, and traffic information (where available).
- Voice Guidance: The TomTom ONE N14644 incorporates voice-signaling to provide clear, turn-by-turn directions, allowing you to keep your eyes on the road.
- Using Favorites: Access your saved destinations quickly by selecting "Navigate to..." and then "Favorites."
4.2 Touchscreen Interaction
The 3.5-inch touchscreen allows for intuitive control. Tap icons and buttons to select options, and use drag gestures to pan across maps. Ensure your fingers are clean and dry for optimal responsiveness.
5. Maintenance
- Cleaning: Use a soft, lint-free cloth to clean the screen and exterior of the device. Avoid abrasive cleaners or solvents.
- Software Updates: Regularly connect your device to TomTom Home on your computer to check for and install the latest software and map updates. This ensures optimal performance and up-to-date navigation data.
- Battery Care: To prolong battery life, avoid exposing the device to extreme temperatures. If storing for an extended period, ensure the battery is partially charged.
6. Troubleshooting
If you encounter issues with your TomTom ONE N14644, consider the following common solutions:
- Device Not Powering On: Ensure the device is fully charged or connected to the car charger. Check the charger connection.
- No GPS Signal: Ensure the device has a clear view of the sky. Avoid using it in enclosed spaces or areas with tall buildings that may obstruct the signal.
- Screen Unresponsive: Perform a soft reset by pressing and holding the power button for approximately 10-15 seconds until the device restarts.
- Incorrect Directions: Verify that your maps are up to date via TomTom Home. Ensure the correct destination address has been entered.
For further assistance, visit the official TomTom support website.
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | ONE N14644 |
| Screen Size | 3.5 Inches |
| Scanner Resolution | 480 x 272 pixels |
| Product Dimensions | 3.62 x 3.07 x 0.98 inches |
| Item Weight | 5.2 ounces |
| Battery Type | 1 Lithium Polymer battery required |
| Battery Life | Up to 3 Hours |
| Connectivity Technology | USB |
| Special Features | Touchscreen, Voice Guidance |
| Included Components | OEM Car Charger |
| Mounting Type | Windshield Mount |
8. Warranty and Support
This product is sold "AS IS" with no warranty supplied or implied. Returns are not accepted. For technical support or further inquiries, please refer to the official TomTom website or contact their customer service directly.
For more information, visit: TomTom Support





