1. Product Overview
The MAIMEIMI P25 is a multi-functional full LCD instrument designed to enhance your driving experience by displaying essential vehicle data directly in your line of sight. It combines OBD2 and GPS functionalities, offering a comprehensive set of monitoring and alarm features.
This device is not only a multi-functional display but also a tester, featuring enhanced stability with dual-core chips. It offers various customizable interfaces and full language operation for easy understanding.
Image: The P25 HUD showcasing its multi-functional display with inclinometer, accelerometer, and ambient light features.
2. Package Contents
Please check the package for the following items:
- 1 x P25 HUD Unit
- 1 x OBD Cable (Type-C)
- 1 x Bracket Holder
- 1 x User Manual
- 2 x Non-slip Stickers
Image: Contents of the P25 HUD package, including the main unit and connection accessories.
3. Installation Guide
3.1 Compatibility Check
The P25 HUD supports both OBD2 and GPS modes. For OBD2 functionality, your vehicle must be compatible:
- Dual-system head-up display is only suitable for gasoline vehicles.
- Gasoline vehicles with OBD2 agreement produced in the United States after 2004.
- Gasoline vehicles with OBD2 agreement produced in other regions after 2008.
- Some cars may still not be compatible; contact support if unsure.
3.2 Locating the OBD2 Port
To determine if your vehicle has an OBD2 port, check for a sticker under the hood indicating "OBD2 CERTIFIED" (Figure 1) or locate the automobile diagnosis port under the steering wheel (Figure 2).
Image: Visual guide for identifying OBD2 compatibility and port location.
3.3 Connecting the Device
- Locate your vehicle's OBD2 interface, typically found under the dashboard near the steering column.
- Plug the provided Type-C OBD cable into the OBD2 port.
- Connect the other end of the Type-C cable to the P25 HUD unit.
- Route the cable neatly along the dashboard and A-pillar to avoid obstruction.
Video: A demonstration of connecting the OBD cable to the vehicle's port and routing the cable for a clean installation.
3.4 Mounting the HUD
The P25 HUD offers multiple installation methods using its split bracket, which supports 360° rotation for adjusting the visual angle and height.
- Mount on the dashboard using the non-slip mat.
- Attach to the windshield for a head-up display effect.
Image: Illustration of the flexible installation options and adjustable bracket for the P25 HUD.
4. Operating Instructions
4.1 Power On and Mode Selection
Once connected, the device will initialize. If your vehicle supports OBD2, both OBD and GPS functions will be displayed by default. If OBD2 is not supported, only GPS functions will be available.
Image: The P25 HUD's language selection interface, allowing users to choose their preferred language.
4.2 Navigating Menus and Display Interfaces
The P25 HUD features a wheel button for simple operations. You can switch between various display interfaces and settings.
- Multiple Screen Operations: Use the wheel button to cycle through different display modes and settings.
- Interface Customization: The device offers a variety of new interface designs with larger fonts for clearer and smoother readability.
- Vehicle Logo Setting: Personalize your display by setting your vehicle's logo. The P25 supports many common car brands, with more being added through software updates.
Image: Examples of different customizable display interfaces available on the P25 HUD.
Image: The vehicle logo setting feature on the P25 HUD, allowing for personalized branding.
4.3 Displayed Data and Alarm Functions
The P25 HUD provides extensive data monitoring and various alarm functions to enhance driving safety.
OBD2 Mode Functions:
- Vehicle speed, RPM, clock, gear, voltage, water/oil temperature, fuel consumption time, average fuel consumption.
- Single driving time, single driving mileage, cumulative driving direction, longitude and latitude, kilometers per liter.
- Intake pressure, oil temperature, air-fuel ratio column, turbine pressure, intake temperature, oil pressure, throttle valve, engine load, transmission oil temperature.
- Satellite quantity, altitude, accelerometer G value, up and down slope angle, left and right tilt angle.
- Acceleration test, brake test, read rich PID data stream, read car fault codes and clear fault codes.
OBD2 Mode Alarms:
- Overspeed alarm, speed alarm, water temperature alarm, voltage alarm.
- Turbine pressure alarm, transmission oil temperature alarm, oil pressure alarm, slope tilt alarm.
- Fatigue driving reminder, vehicle fault alarm.
GPS Mode Functions:
- Vehicle speed, voltage, time, single driving time, single driving mileage, total mileage.
- Cumulative driving direction, latitude and longitude, number of satellites, altitude.
- Accelerometer G value, up and down slope angle, left and right tilt angle.
- Acceleration test, brake test.
GPS Mode Alarms:
- Overspeed alarm, voltage alarm, slope inclination alarm, fatigue driving reminder.
Image: Comprehensive display of various data points and their corresponding icons on the P25 HUD.
Image: The P25 HUD indicating various alarm conditions with visual cues.
4.4 Atmosphere Lamp
The P25 HUD features a cool strobe atmosphere lamp with different colors that can be displayed according to vehicle speed or engine speed. This lamp also functions as a linkage atmosphere light for abnormal conditions.
- RPM Atmosphere Light: Changes color with engine speed (default setting).
- Speed Atmosphere Light: Changes color with car speed.
Image: The P25 HUD's atmosphere lamp feature, illustrating how colors change with vehicle parameters.
5. Maintenance
To ensure the longevity and optimal performance of your P25 HUD, follow these general maintenance guidelines:
- Keep the device clean by wiping it with a soft, dry cloth.
- Avoid exposing the device to extreme temperatures or direct sunlight for prolonged periods.
- Ensure the OBD cable connection is secure and free from damage.
- Do not attempt to disassemble or repair the device yourself, as this may void any applicable warranty.
6. Troubleshooting
If you encounter issues with your P25 HUD, please refer to the following common solutions:
- No Display/Power: Ensure the OBD cable is securely connected to both the vehicle's OBD2 port and the HUD unit. Check your vehicle's ignition status.
- Only GPS Functions Available: If your vehicle does not support the OBD2 protocol (e.g., older models or non-gasoline vehicles), the device will automatically default to GPS mode. This is normal behavior.
- Inaccurate Readings: Ensure the device has a clear view of the sky for GPS signal acquisition. For OBD2 readings, verify your vehicle's compatibility.
- Alarms Triggering Frequently: Review your driving habits and the alarm settings within the HUD menu. Adjust thresholds if necessary.
- Screen Glare: Utilize the adjustable bracket to reposition the HUD for optimal viewing angle and to minimize glare from sunlight. The device also features automatic dimming at night.
7. Specifications
| Feature | Detail |
|---|---|
| Model | P25 |
| Material | ABS+PC |
| Screen Size | 3 Inch TFT |
| Color | Black |
| Function Modes | OBD / GPS (Dual System) |
| Rated Power | OBD+GPS LCD Display |
| Connectivity | Wired (Type-C OBD Cable) |
| Dimensions (W x H x D) | 114mm (4.49in) x 79mm (3.11in) x 37mm (1.47in) |
| High-concerned chemical | None |
Image: Detailed dimensions and component labels of the P25 HUD unit.
8. User Tips
- Optimal Placement: Experiment with different dashboard or windshield positions using the adjustable bracket to find the best viewing angle that minimizes distraction and maximizes visibility.
- Cable Management: Take time to neatly tuck away the OBD cable along the A-pillar or dashboard edges for a clean and professional look, preventing it from interfering with driving.
- Customization: Explore the various display interfaces and vehicle logo settings to personalize your HUD experience.
- Alarm Awareness: Pay attention to the atmosphere lamp and audible alarms, especially for overspeeding or high water temperature, to maintain safe driving conditions.
- Night Driving: The automatic dimming feature ensures comfortable viewing at night, but ensure no external lights cause excessive glare.
9. Warranty and Support
For any product-related inquiries, technical assistance, or warranty claims, please contact the seller directly through the platform where you purchased the device. Ensure you have your purchase details readily available.
