Geloo A401 Car HUD Head Up Display User Manual

1. Introduction and Overview

The Geloo A401 Head Up Display (HUD) is a versatile automotive accessory designed to project essential driving information directly into your line of sight. It features a dual system, supporting both OBD2 and GPS modes, to provide comprehensive vehicle data. This device enhances driving safety by allowing you to monitor speed, engine RPM, water temperature, voltage, and more without diverting your attention from the road. The display is rotatable, allowing for flexible installation on either the A-pillar or dashboard.

Image 1.1: Geloo A401 HUD Head Up Display showcasing its multi-function display capabilities.

2. Package Contents

Please verify that all items are present in the package:

• 1x Geloo A401 Head Up Display Unit
• 1x OBD2 Cable
• 1x User Manual
• 1x Adhesive Tape
• 1x Hexagon Wrench
• 1x Crowbar (for trim removal during installation)

Image 2.1: All components included in the Geloo A401 HUD package.

3. Key Features

• OBD2 + GPS Dual System: The HUD operates in two modes. OBD mode is compatible with most vehicles manufactured after 2012. GPS mode is universally compatible with all vehicles. If your vehicle is not compatible with OBD mode, the device will automatically switch to GPS mode.
• High-Resolution Display: Features a 240*240 resolution screen for clear and rich data display.
• Flexible Installation: The 270-degree rotatable screen allows for installation on the car's A-pillar or dashboard.
• Comprehensive Data Display:
  • OBD2 System Data: Speed, Clock, RPM, Water Temperature, Voltage, Fuel Consumption, Driving Time, Driving Distance, Turbo Pressure, Acceleration Test, Brake Test, Clear Fault Code, Oil Temperature.
  • GPS System Data: Speed, Clock, Driving Time, Satellite Number, Altitude, Driving Distance, Compass.
• Easy Installation: Simple plug-and-play setup. Connects directly to the OBD2 port.
• Wide Vehicle Compatibility: Suitable for cars, buses, and trucks with a voltage range of 8-18V.

Image 3.1: Overview of data displayed in OBD and GPS modes.

4. Installation Guide

The Geloo A401 HUD offers flexible installation options to suit your vehicle's interior.

1. Choose Installation Location: Decide whether to install the HUD on your vehicle's A-pillar trim or directly on the dashboard. The rotatable screen allows for optimal viewing in either position.
2. Secure the Unit: Use the provided adhesive tape to firmly secure the HUD unit in your chosen location. Ensure the surface is clean and dry for best adhesion.
3. Connect the OBD2 Cable: Locate your vehicle's OBD2 port, typically found under the dashboard on the driver's side. Plug the provided OBD2 cable into the port.
4. Route the Cable: Carefully route the OBD2 cable to the HUD unit, ensuring it does not interfere with driving controls or airbags. Use the crowbar tool to tuck the cable neatly under trim panels if necessary.
5. Connect to HUD: Plug the other end of the OBD2 cable into the designated port on the HUD unit.
6. Power On: Start your vehicle. The HUD should power on automatically and begin displaying data.

Image 4.1: Examples of A-pillar and dashboard installation.

Image 4.2: The compact size of the Geloo A401 HUD for easy placement.

5. Operation

5.1 Power On/Off

The HUD powers on automatically when the vehicle is started and powers off when the vehicle is turned off. Upon vehicle power-off, the display will show the trip driving distance for a brief period.

5.2 Switching Display Interfaces

Short press the [M] button to cycle through the available display interfaces. The device offers 8 different display interfaces, including simple function, speed, multi-function, turbo pressure, acceleration test, brake test, and data stream views.

Image 5.1: Operation overview, including button functions and display interface switching.

5.3 Entering Settings Menu

To access the settings menu, long press the [M] button for 5 seconds. Once in the settings menu, use the [<] or [>] buttons to navigate between different setting options. Press the [OK] button to enter a setting or save changes.

Available settings include:

• Speed Set
• RPM Set
• Fuel Set
• Turbo Set
• Clock Set
• System Set

6. Troubleshooting

If you encounter any issues with your Geloo A401 HUD, please refer to the following common troubleshooting steps:

• No Power/Display: Ensure the OBD2 cable is securely connected to both the vehicle's OBD2 port and the HUD unit. Check if the vehicle's ignition is on.
• OBD Mode Not Working: If your vehicle is older than 2012, it may not support the OBD2 protocol. The device should automatically switch to GPS mode. If not, manually switch to GPS mode in the settings.
• Inaccurate Speed Reading: The speed displayed in GPS mode relies on satellite signals. Ensure the unit has a clear view of the sky. In OBD mode, speed calibration might be necessary via the settings menu.
• Display Not Clear: Adjust the viewing angle of the HUD. Ensure the screen is clean and free from dust or smudges.
• Error Codes Displayed: If the HUD displays fault codes, consult your vehicle's manual or a qualified mechanic for diagnosis and resolution. The HUD can clear fault codes via its settings.

For persistent issues, please contact Geloo customer support for further assistance.

7. Specifications

Image 7.1: Dimensions of the Geloo A401 HUD.

8. Warranty and Support

Geloo products undergo strict quality inspection before leaving the factory to ensure reliability and safety. If you have any questions, concerns, or require technical assistance regarding your Geloo A401 HUD, please do not hesitate to contact our customer support team. We are committed to providing satisfactory solutions and support for our products.

Please refer to the contact information provided with your purchase or visit the official Geloo website for support details.