1. Introduction
The MAIMEIMI C1 Navigation Head-Up Display (HUD) is an innovative device designed to enhance driving safety by projecting essential driving data directly onto your car's windshield. This allows drivers to view information such as speed, RPM, water temperature, voltage, and navigation instructions without diverting their eyes from the road. The C1 HUD features a dual working system, supporting both OBD2 and GPS modes, making it compatible with a wide range of vehicles.
This manual provides detailed instructions for the installation, operation, and maintenance of your C1 HUD, along with troubleshooting tips to ensure optimal performance.
2. Package Contents
Please check the box for the following items:
- 1 x Head Up Display (C1 Navigation Unit)
- 1 x User Manual
- 1 x Anti-slip Mat
- 1 x Cleaning Cloth
- 1 x USB Cable
- 1 x OBD Cable
3. Specifications
3.1 General Specifications
- Model: C1 Navigation
- Working System: OBD+GPS 2 in 1 dual system
- Interface: EU OBD interface (wired)
- Display Technology: Suspended virtual display with free-form surface technology
- Optical Coating: 10-layer optical coating for clear, ghost-free images
- Brightness Adjustment: 12-level automatic light perception (photosensitivity), manual adjustment, or APP control
- Positioning: GPS + Beidou double positioning
- Material: Polycarbonate and ABS, high-temperature and non-deformation, UV resistant
- Cooling: Fanless multi-position air cooling design (no noise, high energy efficiency, high reliability)
- Language Support: Multiple languages (Google Custom version)
3.2 Dimensions
- Length: 128mm (5.04in)
- Width: 77mm (3.03in)
- Base Width: 110mm (4.33in)
- Display Height: 64mm (2.52in)
- Base Height: 42mm (1.65in)
4. Installation
Follow these steps to install your MAIMEIMI C1 HUD:
- Connect Power: Plug the OBD socket connector or USB cable into your car's power source (e.g., cigarette lighter or OBD port).
- Route Cable: Carefully insert the wire into the A-pillar seal to conceal it and keep it tidy.
- Position HUD: Connect the OBD cable to the HUD unit. Place the HUD on your dashboard in the desired position, ensuring it is stable and does not obstruct your view. The anti-slip mat can be used to secure the device.
5. Operating Modes and Functions
The C1 HUD operates in two primary modes: OBD and GPS. It automatically detects the mode based on connection.
5.1 OBD Mode (On-Board Diagnostics)
When connected via the OBD port, the HUD displays comprehensive vehicle data:
- Information Display: Vehicle speed, water temperature, voltage, fuel consumption, RPM, single mileage, total cumulative mileage, travel time, system time, intake pressure, oil temperature, air-fuel ratio, turbine pressure, acceleration test, brake test, and read data stream.
- Alarms: Overspeed alarm, Speed alarm, High water temperature alarm, Low voltage alarm, Engine fault alarm, Clear fault code.
- Units: Free switching between kilometer and miles (KM/h & MPH), and Celsius & Fahrenheit (°C & ℉).
5.2 GPS Mode
For vehicles without an OBD2 port or when using navigation features, the GPS mode provides:
- Information Display: Speed, travel time, satellite time, altitude, number of satellites, driving direction, single mileage, voltage, acceleration test, brake test.
- Alarms: Overspeed alarm, Low voltage alarm.
- Units: Free switching between kilometer and miles.
5.3 Detailed ECU Data (OBD Mode)
The C1 HUD can display up to 48 data points from your car's ECU. Below is a table of common parameters:
| Category | Parameters |
|---|---|
| Diagnostic Trouble Codes | DTCs Status, Freeze DTCs, Loop Status, Distance (DTCs) |
| Engine Performance | Engine Load, RPM, Ignition, Engine Runtime, Tacho |
| Temperatures | Coolant Temp, Oil Temperature, Air Temperature, Warm-ups Count |
| Pressures | Intake Pressure, Turbine Pressure, Barometric Pre, Fuelrail Press, FRP REF MANIFO |
| Fuel & Air | Fuel Consumption, Fuel Level, Air-Fuel Ratio, MAF Rate, Throttle Pos, Intake Air Temp, Oxygen Sen (V-11, V-12, V-14, V-21, V-22, V-23, V-24, POS1, POS2) |
| Electrical | Voltage, Battery Voltage |
| Driving Data | Speed, Single Mileage, Total Cumulative Mileage (ODO Distance), Trip Distance, Trip Drivetime, Speed (Average), L/H (TYPE1, TYPE2, TRIP, HISTORY, AVERAGE) |
| Other | System Time, Altitude, Number of Satellites, Driving Direction, Acceleration Test, Brake Test, AUXLNPUTSTATUS, OBD Type |
6. Navigation Setup
The C1 HUD supports mobile phone navigation synchronization. Ensure your phone has Bluetooth 4.0 or higher, and Android OS version 4.4-12.0 or iOS version 5.0 or later.
- Download App: Scan the QR code provided in the user manual (or search for "wiiyii HUD" in your app store) to download and install the companion application. Confirm the HUD displays normally after power-on.
- Enable Connectivity: On your phone, turn on Bluetooth, network data, and GPS.
- Connect to HUD: Open the "wiiyii HUD" app. Your phone's Bluetooth will automatically connect to the HUD.
- Start Navigation: Within the app, enter your desired destination address and click "Simulated Navigation" to begin. Navigation instructions and lane reminders will be projected onto the HUD.
7. Display Customization
The C1 HUD offers extensive customization options for its display:
- Interface Colors: Choose from 8 interface colors.
- Multiple Interfaces: Over 100 small interfaces are available to freely match and display various data combinations.
- One-Click Switching: Easily switch between different data display interfaces.
8. Menu Operation
The C1 HUD features an intuitive menu for settings and adjustments. Use the 'Setting button' on the device to navigate and select options.
Key menu options include:
- Settings: General system settings.
- OBD Diagnose: Access OBD-related functions like Scan DTCs, Clean DTCs.
- Driving Test: Perform Acceleration Test, Brake Test.
- Data Stream: View real-time data streams.
- Language Set: Change display language.
- Sound Switch: Toggle sound alerts.
- Alarms: Configure Speed Alarm, Coolant alarm, RPM alarm, BAT Alarm.
- Display Adjustments: Speed Adjust, Speed Offset, BAT Adjust, Engine Size, Fuel adjust, Change Color (1, 2, 3), Brightness, CWT Unit, Speed unit, Sum distance, Power off time, Sleep Voltage, Time adjust.
- Factory Set: Reset to factory defaults.
9. Safety Features and Reminders
The C1 HUD integrates several features to enhance driving safety:
- Automatic Photosensitivity: A built-in light sensing system automatically adjusts screen brightness across 12 levels based on ambient light, ensuring visibility day and night without glare. Brightness can also be manually adjusted or controlled via the app.
- Smart Speed Reminders: An AI chip provides visual speed reminders:
- Yellow reminder for speeds over 100 KM/h.
- Red reminder for speeds over 120 KM/h.
- Comprehensive Alarms: Includes Overspeed alarm, RPM alarm, High Water Temperature alarm, Low Voltage alarm, Engine Fault alarm, and Fatigue Driving reminder.
- Lane Change Reminder: When using navigation, the HUD provides visual cues for lane changes in advance, helping to avoid traffic violations and improve navigation clarity.
- Optical Imaging: Utilizes advanced optical imaging with a 10-layer coating to correct image distortion and eliminate ghosting, providing a clear, high-definition display.
10. User Tips
- Vehicle Compatibility: The C1 HUD is designed to work with all vehicles using its dual OBD+GPS system. For OBD mode, ensure your vehicle supports the OBD2 standard. Users have reported successful operation with various models, including BMW F11 diesel and Toyota Proace Verso 2.0 D 2023.
- App Updates: Regularly check for updates to the "wiiyii HUD" app to ensure the best performance and access to new features, especially for navigation.
- Cable Management: Take care to properly route and secure the OBD/USB cable to prevent interference with driving controls and maintain a clean dashboard aesthetic.
11. Maintenance
- Cleaning: Use the provided cleaning cloth or a soft, dry microfiber cloth to gently wipe the display screen and the HUD unit. Avoid using harsh chemicals or abrasive materials that could scratch the surface.
- Storage: When not in use for extended periods, store the HUD in a cool, dry place away from direct sunlight and extreme temperatures.
- Cable Care: Inspect the OBD and USB cables periodically for any signs of wear or damage. Replace them if necessary to ensure reliable connection.
12. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/Power off | Loose cable connection, no power from OBD/USB port, device fault. | Check all cable connections. Ensure the car's ignition is on. Try a different USB port or OBD port if available. |
| Inaccurate speed/data | Incorrect unit setting (KM/h vs MPH), GPS signal interference, OBD data mismatch. | Adjust speed unit in settings. Ensure clear view of sky for GPS. If in OBD mode, check if your vehicle's ECU data is standard. Use the Speed Offset setting to calibrate. |
| Navigation not working | Bluetooth not connected, app not running, phone GPS/network off, outdated app. | Verify Bluetooth connection to HUD. Ensure "wiiyii HUD" app is open and has location permissions. Check phone's GPS and network status. Update the app to the latest version. |
| Ghosting or double image | Improper viewing angle, protective film not removed. | Adjust the HUD's position or angle. Ensure any protective films on the display screen are removed. The device features 10-layer optical coating to minimize ghosting. |
| Alarms not functioning | Alarm settings disabled or set too high/low. | Access the menu (Section 8) and verify alarm settings (e.g., Overspeed alarm, Water Temp alarm). Adjust thresholds as needed. |
13. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the seller's policies or contact the MAIMEIMI customer support directly. Keep your purchase receipt as proof of purchase.
14. Product Video Demonstration
Watch this video to see the MAIMEIMI C1 HUD in action, demonstrating its various display modes, navigation features, and real-time data projection during driving.