MAIMEIMI P10 Pro OBD2 Car LCD Head Up Display User Manual

1. Introduction

Thank you for purchasing the MAIMEIMI P10 Pro OBD2 Smart Digital Device. This head-up display connects to your car's OBD2 interface via an OBD cable to display crucial driving data such as vehicle speed, engine RPM, water temperature, and fuel consumption. It is designed to help drivers keep their eyes on the road, enhancing safety by reducing the need to look down at the dashboard. The P10 Pro does not alter any car ECU data.

The device features powerful error code detection, displaying error information in text form and allowing for fault code clearing. It also includes accelerating competitive mode, brake performance test mode, and the ability to read the entire vehicle data stream.

2. Package Contents

Please check the box for the following items:

• 1 x P10 Pro Head Up Display Unit
• 1 x OBD Cable
• 1 x Anti-slip Mat
• 1 x User Manual (this document)

3. Technical Specifications

4. Setup and Installation

4.1. Compatibility Check

The P10 Pro is a dual-system head-up display suitable only for gasoline vehicles. It is compatible with cars that have an OBDII (On-Board Diagnostics II) or EUOBD (European On-Board Diagnostics) agreement.

• Gasoline vehicles with OBD2 agreement produced in the United States after 2004.
• Gasoline vehicles with OBD2 agreement produced in other regions after 2008.

Note: Some cars may still not be compatible. Please confirm compatibility before purchasing.

4.2. Identifying Your Vehicle's OBDII Port

To determine if your vehicle is compatible and to locate the diagnostic port:

1. Open the engine hood and look for a sticker that says "OBDII CERTIFIED" (see Figure 2, Picture 1). If present, the device can be installed.
2. Locate the 16-pin diagnostic link, usually found under the steering wheel (see Figure 2, Picture 2).

4.3. Connection

Once you have confirmed compatibility and located the OBDII port, connect the P10 Pro to the vehicle using the provided OBD cable. The device is designed for auto-match models, plug and play.

5. Operating Instructions

5.1. Device Overview

5.2. Setting Button Functions

The setting button is a multi-directional control:

• Short press (in):
  1. Switches the display mode.
  2. Confirms menu selections when inside a menu.
• Push left:
  1. Switches the left area functions.
  2. Changes function settings when inside a menu (decreases value).
• Push right:
  1. Switches the right area functions.
  2. Changes function settings when inside a menu (increases value).
• Long press (in): After entering a menu and finishing settings, long press for 5 seconds to save and exit.

5.3. Display Modes

The P10 Pro offers multiple display modes to suit your preferences. You can switch between these modes by short pressing the setting button.

5.4. Setting Mode

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

Available settings include:

• Language Set: Choose your preferred language (e.g., English, Simplified Chinese, Traditional Chinese, Russian).
• Sound Switch: Turn the buzzer on/off (default is on).
• 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 device will alarm if coolant temperature exceeds this value.
• RPM Alarm: Default value is 6000 RPM. The device will alarm if engine RPM exceeds this value.
• BAT Alarm: Default value is 10.5V. The device will alarm if battery voltage drops below this value.
• Speed Adjust: Adjust the speed displayed to match your dashboard. Default is 107%.
• Speed Offset: If the device shows a speed (e.g., 5 KM/H) when the vehicle is off, adjust this value to match the displayed offset.
• BAT Adjust: Adjust if the battery voltage displayed differs from the vehicle's actual voltage.
• Engine Size: Default is 1.6 L. Adjust this if your car's displacement is significantly different to ensure accurate fuel consumption readings.
• Fuel Adjust: Default is 100%. Can be adjusted for accuracy.
• Change Color 1/2/3: Adjust the color of different display areas (top, left, right). Note: Color changes only apply to the open first interface.
• Brightness: Default is 0 (automatic brightness). Values 1-6 allow manual adjustment, with higher numbers indicating stronger brightness.
• CWT Unit: Default coolant temperature unit is °C, can be changed to °F.
• Speed Unit: Default is KM, can be changed to Mile.
• Sum Distance: Allows setting the total driving distance to match the dashboard (e.g., if dashboard shows 30000 Km, set device to 30000 Km).
• Power Off Time: Default is 10s. For cars with auto start/stop, set to 180-240s.
• Sleep Voltage: This is the power off voltage. If the device doesn't auto-off, adjust this voltage to 13.2V or higher.
• Factory Set: Short press to reset to factory defaults.

5.5. OBD Diagnose Set

• Scan DTCs: Scans the ECU for error codes and displays error details.
• Clean DTCs: Switch to 'Clean the DTCs' option and short press the button to clear fault codes.

5.6. Driving Test

• Speedup Test: Displays speed, distance, and time for 400m and 100m acceleration tests.
• Brake Test: Displays speed, brake distance, and time for braking performance.

5.7. Data Stream

This function displays all available vehicle data streams.

6. Troubleshooting

6.1. Screen without any display, and no power

• Start the car engine.
• Check if the OBD cable is tightly connected. Try pulling down and re-inserting the OBD cable multiple times.
• Ensure the product power switch is turned on.
• If still no display, test the device in another compatible car to determine if the issue is with the device or the car's OBD diagnostic interface. If the car's OBD interface is faulty, repair it.

6.2. Only shows car voltage and automatically powers off after 60 seconds

This indicates the product is not fully compatible with your vehicle's OBD system. The P10 Pro is only available for cars with OBD2 and EU-OBD agreements (European region: after 2003; Other regions: after 2007). It does not support JOBD and OBDI. Try testing it in another compatible car.

6.3. Inaccurate Speed

• First, check if the speed unit (KM/H or MPH) is correct in the settings. Adjust if necessary.
• If the displayed speed is consistently different from your dashboard (e.g., dashboard shows 100, device shows 101), enter the setting mode, navigate to 'Speed Adjust', and adjust the value (e.g., to 106% if the device is consistently 1% higher).
• If the device shows a speed (e.g., 5 KM/H) when the vehicle is off, adjust the 'Speed Offset' value to match this offset.

6.4. Inaccurate Fuel Consumption

Check your car's engine displacement and set the 'Engine Size' in the device settings to match it (e.g., if your car is 2.0L, set the device value to 2.0L). The 'Fuel Adjust' setting can also be used for fine-tuning, but it's generally not recommended to change it as data is read directly from the car's ECU.

6.5. RPM Alarm / Over Speed Alarm

If these alarms are triggering incorrectly or not at desired thresholds, refer to the 'Setting Mode' section to adjust the 'RPM Alarm' and 'Speed Alarm' values.

6.6. The device cannot auto power off

• If the device continues to display speed after the vehicle turns off, adjust the 'Speed Offset' value to match the displayed speed when off.
• If the device continues to display RPM after the vehicle turns off, switch to the 'Sleep Voltage' setting and set the value to 13.2V or higher.

6.7. Auto start and stop cars

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

6.8. Wrong operation leads to crashes

If the device crashes or behaves unexpectedly, perform a 'Factory Set' from the settings menu.

6.9. Car dashboard fault code bright

Universal OBD devices support multiple communication modes, but generally, each car only supports one specific communication protocol. If your dashboard fault code light illuminates, it might be due to incompatible pins. When the vehicle turns on, unplug the OBD cable and re-plug it. The device will then display the detected protocol. If the issue persists, you may need to identify and pull up unneeded pins according to the specific communication protocol (e.g., ISO15765 CAN Bus, ISO14230 KWP2000, ISO 9141-2) as detailed in the full PDF manual.

7. User Tips

• For optimal visibility, place the HUD in a position that minimizes glare and allows for easy viewing without obstructing your view of the road.
• Regularly check the OBD cable connection to ensure it remains secure, especially after driving on rough roads.
• Experiment with different display modes to find the one that best suits your driving style and provides the most relevant information at a glance.
• If you frequently drive in varying light conditions, consider using the automatic brightness setting for convenience.

8. Maintenance

• Keep the device clean by wiping it with a soft, dry cloth. Avoid using harsh chemicals or abrasive cleaners.
• Ensure the OBD port and cable connectors are free from dust and debris to maintain a reliable connection.
• Store the device in a cool, dry place when not in use for extended periods.

9. Additional Resources

A detailed user manual in PDF format is available for download. This PDF contains comprehensive information, including specific wiring diagrams for different OBD communication protocols (ISO15765 CAN Bus, ISO14230 KWP2000, ISO 9141-2) and instructions on how to adjust pins if necessary to resolve dashboard fault codes. You can access the PDF manual at: P10 Pro User Manual (PDF).