1. Introduction
The VJOYCAR M41 Plus is a state-of-the-art OBDii Head-up Display (HUD) designed to enhance driving safety by projecting crucial driving data directly onto your windshield. This mirror-style HUD features a large screen and displays information such as speed, RPM, water temperature, and voltage, allowing drivers to monitor vehicle performance without diverting their gaze from the road. Its white and blue display design is optimized for visual comfort, ensuring clear visibility both day and night.
2. Package Contents
Please verify that all items are present in your package:
- 1x HUD Unit (M41 Plus)
- 1x OBD Cable
- 1x User Manual
- 1x Fixing Tool (Crowbar)
- 2x Velcros
- 1x Tape
3. Setup and Installation
The VJOYCAR M41 Plus HUD is designed for plug-and-play installation using the EUOBD & OBD cable (full 16 pins).
3.1. Compatibility Check
The OBD2 working mode may not be compatible with all vehicles. Please note the following:
- Almost 98% of cars manufactured before the year 2004 (including 2004) are not compatible.
- Some older oil and electricity mixing vehicles, diesel-powered cars, pickup trucks, SUVs, ORVs, and mini-buses may not be compatible.
- A few special cars manufactured after 2008 might also not be compatible with standard OBD2 protocols.
If you are unsure about your vehicle's compatibility, please consult your vehicle's manual or contact customer support.
3.2. Installation Steps
- Connect OBD Cable: Locate your car's OBD2 interface (usually under the dashboard on the driver's side) and connect one end of the provided OBD cable.
- Hide OBD Cable: Carefully route and hide the OBD cable along the seams of your car's interior to ensure a neat and secure installation. The included crowbar tool can assist with tucking the cable.
- Connect to HUD: Connect the other end of the OBD cable to the HUD unit. Once connected, the HUD should power on with the engine.
4. Operating Instructions
The M41 Plus HUD is designed for ease of use, automatically powering on and off with your vehicle's engine.
4.1. Automatic Power On/Off
The HUD unit will automatically power on when your car's engine starts and power off when the engine is turned off. This feature ensures convenient operation without manual intervention.
4.2. Display Features
- Large Screen & Wide Angle: The 160mm widescreen display provides a clear and natural view from various angles.
- HD LCD Mirror Display: Utilizes mirror projection for a bright and clear display without ghosting, even in direct sunlight.
- Brightness Auto-adjustment: An integrated light sensor automatically adjusts display brightness according to ambient light conditions, ensuring optimal visibility day and night without dazzling the driver.
- Speed Unit Switch: Easily switch between KM/H and MPH speed units.
- Gradient RPM Bar: A modern design element where each segment of the RPM bar represents 800 RPM.
4.3. Multi-function Display Interfaces
The M41 Plus offers six different display interfaces, allowing you to customize the information shown:
- Speed
- Speed + RPM
- Speed + RPM + Clock
- Speed + RPM + Coolant Temperature
- Speed + RPM Value + RPM Bar
- Speed + RPM Bar + Voltage
You can switch between these interfaces using the control buttons on the HUD unit.
4.4. Control Buttons
The HUD unit features several buttons for navigation and settings adjustment:
- Down Button: Navigate down through menu options or decrease values.
- OK Button: Confirm selections or enter menus.
- Up Button: Navigate up through menu options or increase values.
- Menu Button: Access the main settings menu.
- On/Off Switch: Manual power control (though automatic power is standard).
5. Maintenance
To ensure the longevity and optimal performance of your VJOYCAR M41 Plus HUD, follow these simple maintenance guidelines:
- Keep the display surface clean using a soft, dry cloth. Avoid abrasive cleaners or solvents.
- Ensure the OBD cable connections are secure and free from damage.
- Avoid exposing the unit to extreme temperatures or direct prolonged sunlight when not in use, if possible.
6. Troubleshooting and Alarms
6.1. Multiple Alarms for Driving Safety
The HUD is equipped with several alarm functions to improve driving safety:
- Over-speed Alarm: Alerts you when exceeding a preset speed limit.
- Coolant Alarm: Warns of high engine coolant temperature.
- Voltage Alarm: Notifies you of low vehicle battery voltage.
- Fatigue Driving Reminder: Prompts you to take a break after extended driving periods.
- Engine Fault Alarm: Indicates detected engine issues.
- Clear Faulty Code: Allows you to clear certain engine fault codes.
6.2. Common Issues
- HUD not powering on: Ensure the OBD cable is securely connected to both the vehicle's OBD2 port and the HUD unit. Check vehicle compatibility (refer to Section 3.1).
- Inaccurate readings: Verify that the correct speed unit (KM/H or MPH) is selected in the settings. If issues persist, consult the manual for calibration options or contact support.
- Double image/ghosting: The M41 Plus is designed to prevent double images. If you experience this, ensure the unit is positioned correctly and the windshield is clean.
7. Specifications
| Feature | Specification |
|---|---|
| Product Name | Mirror HUD head up display |
| Model | M41 Plus |
| Output Frequency | OBD2 HUD Mirror |
| Rated Power | Car Speed Projector |
| Size Name | 173*85*31 mm |
| Wire or Wireless | Wired |
| Speed Unit | KMH, MPH |
| Cable Length | 1.8M |
| Installation Position | Center Console |
| Compatible with | All Cars (OBD2 compatible), Automotive Tools |
| Certificates | CE, FCC, RoHS |
8. User Tips
- Check Compatibility First: Before installation, always confirm your vehicle's compatibility with OBD2 devices, especially if your car is older than 2008 or is a hybrid/diesel model.
- Optimal Placement: Experiment with different placements on your dashboard to find the position that offers the clearest view without obstructing your line of sight.
- Utilize Multi-function Display: Take advantage of the six different display interfaces to customize the information most relevant to your driving needs.
9. Warranty and Support
9.1. Warranty
The VJOYCAR M41 Plus HUD comes with a 1-year warranty from the date of purchase. During this period, if you encounter any manufacturing defects or functional issues, please contact our support team for assistance, including unit exchange or accessory replacement.
9.2. Technical Support
We offer lifelong free technical support for your VJOYCAR M41 Plus HUD. If you have any questions regarding installation, operation, or troubleshooting, please do not hesitate to contact us. Our team is ready to assist you.
