Universal Smart Head-Up Display (HUD) Instruction Manual

1. Introduction

Thank you for purchasing the MAIMEIMI Universal Smart Head-Up Display. This device is designed to enhance your driving experience by projecting essential vehicle data directly into your line of sight, reducing the need to look down at your dashboard. It connects via your car's OBD2 interface (for P10/P10-PRO models) or GPS (for Y03 models) and displays various driving parameters such as vehicle speed, engine RPM, water temperature, fuel consumption, and more. This manual provides detailed instructions for installation, operation, and troubleshooting to ensure optimal use of your new HUD.

2. Product Models

This product is available in different models, primarily distinguished by their data acquisition method:

• P10 & P10-PRO: These models are OBD2 speedometers with car diagnostic tools. They connect to your vehicle's On-Board Diagnostics (OBD2) port to retrieve data.
• Y03-KMH & Y03-MPH: These models are GPS speedometers with car diagnostic tools. They are universally compatible with all cars as they rely on GPS signals for speed and other data, powered via USB.

3. Main Functions & Features

• Plug and Play: Easy installation with the provided OBD cable (P10/P10-PRO) or USB cable (Y03).
• Display: Real 2.6" TFT LCD multi-color smart display for clear visibility.
• Vehicle Protocol Detection: The device automatically detects the vehicle protocol upon first scan.
• New Functions: Includes accelerating competitive mode and brake performance test.
• Comprehensive Data Display: Shows vehicle speed, engine RPM, water temperature, oil temperature, intake pressure, voltage, instantaneous fuel consumption, average fuel consumption, driving distance measurement, driving time.
• Alarm System: Features low voltage alarm, high water temperature alarm, over speed alarm, and engine fault code alarm.
• Fault Code Management: Ability to eliminate engine fault codes.
• Customizable Display: Multi-function display mode or simple function display mode can be switched freely.
• Unit Switching: Freely switch between kilometers (KMH) and miles (MPH).
• Language Options: English, Simplified Chinese, Traditional Chinese.
• Automatic Operation: Automatic power on/off with the car.

4. Setup and Installation

4.1. P10/P10-PRO (OBD) Installation

1. Check Vehicle Compatibility: The OBD smart digital device works with cars that have an OBDII or EU OBD agreement. Open your car's engine hood and look for a sticker that says "OBDII CERTIFIED" (Figure 1). If present, the device can be installed.
2. Locate OBD2 Port: Find the 16-pin diagnostic link (Figure 2), usually located under the dashboard on the driver's side.
3. Connect Device: Plug the provided OBD cable into the vehicle's OBD2 port and then into the HUD device.
4. Cable Management: Route the cable discreetly to avoid interference with driving. You can tuck it along the dashboard edges and A-pillar.

4.2. Y03 (GPS) Installation

1. Placement: Place the Y03 GPS HUD on your dashboard in a position that does not obstruct your view of the road.
2. Power Connection: Connect the provided USB cable to the MINI USB port on the device and then to a USB port in your car or a cigarette lighter car charger port.
3. Non-destructive Installation: The Y03 model offers non-destructive installation, simply plug and play.

5. Operation

5.1. Key Functions

The device features a multi-functional setting button and a light sensor:

1. Setting Button: This button can be pushed left/right, short-pressed, or long-pressed to navigate and confirm settings.
2. Light Sensor: Automatically adjusts display brightness based on ambient light.
3. OBD Interface: (P10/P10-PRO only) Connects to the vehicle's OBD2 port.

5.2. Setting Button Functions

• Short Press (in):
  1. Switches the display mode.
  2. Confirms the menu selection after entering a menu.
• Push Left:
  1. Switches the left area functions.
  2. Decreases the function setting value after entering a menu.
• Push Right:
  1. Switches the right area functions.
  2. Increases the function setting value after entering a menu.
• Long Press (in): After entering the menu and finishing settings, long press for 5 seconds to save and exit.

5.3. Function Abbreviations

The display uses abbreviations for various parameters:

• ECT: Engine Coolant Temperature
• RPM: Revolutions Per Minute
• VLT: Voltage
• FUE: Fuel Consumption
• ODO: Odometer
• DIS: Single Driving Distance
• TIM: Single Driving Time

5.4. Multiple Display Modes

The device supports various display modes to suit different driving preferences. You can switch between these modes using the setting button.

5.5. Automatic Power On/Off

The device is designed to automatically turn on when the car starts and turn off when the car is turned off, preventing power theft (for Y03 GPS model) or unnecessary battery drain (for P10/P10-PRO OBD models).

6. Settings Menu

To enter the setting mode, long press the setting button. Use push left/right to navigate and short press to confirm. Long press to save and exit.

6.1. General Settings

• Language Set: Choose your preferred language (English, Simplified Chinese, Traditional Chinese).
• Warning Tone: Turn the buzzer on or off. Default is on.
• Brightness: Default is 0 (automatic brightness). Values 1-6 allow manual adjustment, with higher numbers indicating stronger brightness.
• CWT Unit: Set the coolant temperature unit to °C (default) or °F.
• Speed Unit: Set the speed unit to KM (default) or Mile.
• Sum Distance: Adjust the total driving distance to match your car's dashboard.
• Power Off Time: Default is 10s. For cars with auto start/stop, set to 180-240s.
• Sleep Voltage: If the device doesn't auto-off, adjust this value (e.g., to 13.2V or higher).
• Factory Set: Short press to reset to factory defaults.

6.2. Alarm Settings

• Speed Alarm: Default value is 150. The HUD will alarm if speed exceeds this value. Adjust by pushing left (decrease) or right (increase).
• Coolant Alarm: Default value is 120°C. The HUD will alarm if coolant temperature exceeds this value.
• RPM Alarm: Default value is 6000 r/min. The HUD will alarm if engine RPM exceeds this value.
• BAT Alarm: Default value is 10.5V. The HUD will alarm if battery voltage drops below this value.

6.3. Calibration Settings

• Speed Adjust: Adjust the displayed speed to match your car's dashboard. Default is 107%.
• Speed Offset: If the device shows speed (e.g., 5KM/H) when the vehicle is off, adjust the Speed Offset value to match (e.g., set to 5).
• BAT Adjust: If the battery voltage displayed differs from the vehicle's actual voltage, it can be adjusted.
• Engine Size: Default is 1.6 L. Adjust this to your car's displacement if fuel consumption readings are inaccurate.
• Fuel Adjust: Default is 100%. Can be adjusted for more accurate fuel consumption readings.

6.4. Display Color Settings

• Change Color 1: Adjusts the color of the top display area (e.g., speed).
• Change Color 2: Adjusts the color of the left display area.
• Change Color 3: Adjusts the color of the right display area.

Note: For color changes, only the open first interface can be modified.

7. Driving Tests

The device offers two driving test modes:

• Speedup Test: Displays speed, distance, and time taken for 400m and 100m acceleration.
• Brake Test: Shows speed, brake distance, and time.

8. Data Stream

The device can display the entire vehicle data stream, providing deep inspection and diagnosis capabilities. This includes scanning and clearing Diagnostic Trouble Codes (DTCs), viewing frozen frame data, fuel loop status, component tests, O2 sensor monitor tests, ON-Board monitor tests, battery voltage & ignition, and reading vehicle information.

9. Troubleshooting

9.1. Screen Without Display, No Power

1. Start the car engine.
2. Check if the OBD cable line is tightly connected. Try pulling down and re-inserting the OBD cable multiple times to ensure a secure connection.
3. Check if the product power switch is turned on.
4. If still no display, test the device in another car to determine if the issue is with the device or the car's OBD diagnostic interface. If the car's interface is faulty, repair it.

9.2. Only Shows Car Voltage, Automatic Power Off After 60 Seconds (P10/P10-PRO)

This indicates a compatibility issue. The P10/P10-PRO models are only compatible with cars that have an OBD2 or EU-OBD agreement (generally, cars produced after 2004 for US automakers, and after 2008 for European/Asian automakers). This product does not support JOBD and OBDI protocols. If your car falls outside these specifications, it is recommended to test with another compatible car.

9.3. Inaccurate Speed

1. First, ensure the speed unit (KM/H or MPH) is correctly set in the device settings.
2. If the speed is still inaccurate, enter the setting menu, navigate to 'Speed Adjust', and adjust the value to match your car's dashboard speed. For example, if your dashboard shows 100 and the device shows 101, adjust the default value to 106%.

9.4. Inaccurate Fuel Consumption

Check your car's engine displacement and set the device's 'Engine Size' parameter accordingly (e.g., if your car is 2.0L, set the device to 2.0L). While fuel consumption can be adjusted, it is generally not recommended as the data is read directly from the car's ECU.

9.5. RPM Alarm

If the RPM alarm is not functioning as expected, refer to the settings menu to adjust the default alarm value (default is 6000 r/min).

9.6. Over Speed Alarm

If the over speed alarm is not functioning as expected, refer to the settings menu to adjust the default alarm value (default is 150 KM/H).

9.7. Device Cannot Auto Power Off

1. Speed Display After Vehicle Off: If the device continues to display speed after the vehicle is turned off, switch to the 'Speed Offset' setting and adjust its value to match the speed displayed by the device (e.g., if it shows 5KM/H, set the offset to 5).
2. RPM Display After Vehicle Off: If the device continues to display RPM after the vehicle is turned off, switch to the 'Sleep Voltage' setting and adjust the value to 13.2V.

9.8. Auto Start and Stop Cars

For cars with auto start/stop functionality, change the 'Power Off Time' setting to 180-240 seconds to prevent premature shutdown.

9.9. Wrong Operation Leads to Crashes

If the device crashes due to incorrect operation, perform a 'Factory Set' reset.

9.10. Car Dashboard Fault Code Bright (P10/P10-PRO)

Universal OBD devices support multiple communication modes, but each car typically uses only one. If your car's dashboard shows a fault code after connecting the HUD, you may need to adjust the OBD communication protocol by pulling up unneeded pins from the OBD cable using pliers. The device will display the protocol when the vehicle turns on, then unplug and re-plug the OBD cable.

OBD Communication Protocol Examples:

• ISO15765 CAN Bus: Keep pins 4, 5, 6, 14, 16. Pull up other pins.
• ISO14230 KWP2000: Keep pins 4, 5, 7, 16. Pull up other pins.
• ISO 9141-2: Keep pins 4, 5, 7, 15, 16. Pull up other pins.

10. Technical Specifications

11. User Tips

• Check Compatibility Carefully: Before purchasing, especially for OBD models, verify your car's year and protocol. Older cars (pre-2004 US, pre-2008 EU/Asian) and certain vehicle types (electric, diesel, hybrid, pickup, passenger cars) may not be compatible with OBD models. If unsure, contact the seller with your car's make, model, year, and agreement type.
• GPS Model for Universal Use: If you need a HUD for any car, including those with compatibility issues for OBD models, the Y03 GPS model is a reliable universal option.
• Secure Cable Routing: When installing the OBD cable, take time to route it neatly and securely along the car's interior to prevent it from interfering with pedals or other controls.
• Adjust Brightness for Optimal View: While automatic brightness is convenient, manually adjust it if you find the display too dim or too bright in specific lighting conditions.
• Utilize Diagnostic Features: For OBD models, regularly check for and clear fault codes to maintain your vehicle's health and prevent minor issues from escalating.

12. Warranty and Support

For detailed warranty information and customer support, please refer to the official product documentation provided with your purchase. You can also find additional guides and documents, including a user manual in PDF format, by visiting the product page or contacting customer service. The PDF manual can be accessed here.

13. Product Demonstration Video

Watch this video for a visual guide on the product's features and in-car operation: