Liiiyuan M2 Head-Up Display User Manual

1. Introduction

The Liiiyuan M2 is a GPS-based Head-Up Display (HUD) designed for automotive use. It projects essential driving information, primarily speed, onto your car's windshield, allowing drivers to view data without diverting their gaze from the road. This device features a simple, minimalistic design with large, clear fonts and an automatic light-sensing function for optimal visibility in various lighting conditions. It is a plug-and-play unit compatible with all vehicles.

The M2 HUD utilizes GPS technology to accurately display vehicle speed in MPH or Km/H. Its compact body is designed for easy placement on the dashboard without obstructing the driver's view. The integrated light shield helps prevent glare, ensuring clear visibility day and night.

2. What's in the Box

Please check the package contents to ensure all items are present:

• M2 Head-Up Display Unit
• Type-C USB Cable
• Reflective Film
• English User Manual
• 3M Sticker (for mounting)

Image: All components included in the Liiiyuan M2 Head-Up Display package.

Image: Detailed view of product accessories and dimensions.

3. Setup Instructions

1. Choose Placement: Select a suitable flat area on your dashboard where the HUD will not obstruct your view of the road. The compact design allows for flexible placement.
2. Secure the Device: Use the provided 3M sticker to firmly attach the M2 HUD to your chosen dashboard location. Ensure the device is stable.
3. Connect Power: Use the included Type-C USB cable to connect the M2 HUD to a USB power source in your car (e.g., a car USB port or a cigarette lighter adapter). The device is designed for plug-and-play operation.
4. Apply Reflective Film (Optional): If you experience a double image or prefer a sharper projection, apply the reflective film to your windshield directly above the HUD unit. Clean the windshield thoroughly before application.
5. Start Engine: Turn on your car's engine. The M2 HUD will power on automatically.
6. GPS Signal Acquisition: Upon startup, a small icon on the HUD display may flash. This indicates that the device is searching for satellite signals. The speed will be displayed once a stable GPS signal is acquired. This process may take a few moments, especially during the first use or in areas with poor satellite reception.

Image: The compact design of the M2 HUD allows for versatile placement on the dashboard.

Image: Installation steps and power connection for the Liiiyuan M2 HUD.

4. Operating Instructions

The Liiiyuan M2 HUD is designed for straightforward operation:

• Automatic Power On/Off: The device will automatically power on when your car's engine starts and power off when the engine is turned off, provided it is connected to a switched USB power source.
• Speed Display: Once a GPS signal is acquired, your current vehicle speed will be displayed prominently on the windshield. The display uses large, clear fonts for easy readability.
• Automatic Brightness Adjustment: The M2 HUD features a built-in light sensor that automatically adjusts the display brightness according to ambient light conditions. This ensures the display is clear during the day and not overly bright or distracting at night.
• Speed Unit: The unit displays speed in MPH. Refer to the included English manual for instructions on how to switch between MPH and Km/H, if this feature is available and desired.

Image: The M2 HUD projecting speed information onto the windshield, showing the speed, unit, and light sensor.

Image: Real-world view of the HUD display during day and night driving.

Image: The integrated hood design of the M2 HUD for glare reduction.

5. Maintenance

To ensure the longevity and optimal performance of your Liiiyuan M2 Head-Up Display, follow these simple maintenance guidelines:

• Cleaning: Use a soft, dry cloth to gently wipe the surface of the HUD unit. Avoid using abrasive cleaners or solvents, as these can damage the display or casing.
• Cable Care: Ensure the Type-C USB cable is not kinked, pinched, or subjected to excessive tension. Damaged cables can affect power supply and device functionality.
• Environmental Conditions: While designed for automotive use, avoid exposing the device to extreme temperatures (very hot or very cold) for extended periods when not in use.
• Reflective Film: If the reflective film becomes dirty or damaged, gently clean it with a soft, damp cloth. If replacement is needed, ensure the new film is specifically designed for HUD use.

6. Troubleshooting

If you encounter issues with your Liiiyuan M2 HUD, please refer to the following common problems and solutions:

• No Display/Device Not Turning On:
  • Check the USB cable connection to both the HUD unit and the car's power source.
  • Ensure the car's engine is running, as the device powers on automatically with the engine.
  • Try a different USB port or power adapter to rule out a faulty power source.
• Speed Not Displaying or Flashing Icon:
  • A flashing icon indicates the device is searching for GPS satellite signals. This can take a few minutes, especially in areas with limited sky visibility (e.g., tunnels, dense urban areas, or underground parking).
  • Ensure the HUD unit has a clear view of the sky for optimal GPS signal reception. Avoid placing it under metallic objects or tinted areas of the windshield that might block signals.
  • If the issue persists, try moving the vehicle to an open area to facilitate signal acquisition.
• Inaccurate Speed Reading:
  • The M2 HUD uses GPS for speed measurement. GPS speed can sometimes differ slightly from your car's speedometer due to various factors (e.g., tire size, speedometer calibration).
  • Ensure the device has a strong GPS signal. Weak signals can lead to less accurate readings.
  • If the discrepancy is significant, consult the detailed English manual for any calibration options, if available.
• Double Image on Windshield:
  • This can occur due to the multi-layered structure of some windshields. Apply the provided reflective film to the windshield directly above the HUD unit to eliminate the double image and enhance clarity.

7. Specifications

8. Warranty and Support

Liiiyuan products undergo a thorough quality inspection before leaving the factory. We offer a one-year warranty for any unresolved product issues from the date of purchase.

For any questions, concerns, or technical support regarding your Liiiyuan M2 Head-Up Display, please contact our customer service team directly via email. We are committed to providing excellent after-sales service and will assist you promptly.

Please refer to the contact information provided in your purchase documentation or on the official Liiiyuan website for the most up-to-date support channels.