1. Introduction and Overview
The VJOYCAR V70 OBD2 Gauge Cluster HUD is an advanced automotive diagnostic and display tool designed to provide real-time vehicle information directly to the driver. This device connects to your vehicle's On-Board Diagnostics (OBD2) port, offering a comprehensive view of critical engine parameters and driving statistics on its 5.8-inch HD LCD screen. It enhances driving safety and awareness by providing timely alerts for various conditions.

Figure 1: VJOYCAR V70 OBD2 Gauge Cluster HUD
2. Key Features
- Large HD LCD Display: Features a classic 5.8-inch screen for clear visibility of driving speed (MPH or KM/H) and other data.
- Broad Compatibility: Built-in support for all OBD2 protocols, including J1850/CAN/EOBD, ensuring compatibility with most cars and some pickup trucks manufactured since 1997. Note: Older or special cars may display limited data.
- Comprehensive Data Display: Capable of displaying approximately 96 PIDs (Parameter IDs) including vehicle speed, RPM, engine coolant temperature, odometer, engine load value, intake air temperature, voltage, EGR error, fuel level, and Fuel Rail Pressure. Actual displayed data may vary based on vehicle protocol compatibility.
- Smart Diagnostic Tool: Monitors engine data and activates alarms for overspeed, RPM, engine coolant temperature (ECT), and voltage. Alarms are customizable and can be turned off.
- Performance Testing: Includes a 0-100KM speed-up time measurement function.
- Adjustable Brightness: Screen brightness can be adjusted for optimal viewing in various lighting conditions.
- Screen Rotation: Supports 180° screen rotation for flexible installation options (dashboard or upside-down on windshield).
- Plug and Play Installation: Simple connection via a Type-C to OBD 16-pin cable. The device powers on automatically when the car's ACC is on and turns off when ACC is off.

Figure 2: Multi-functions of the V70 HUD

Figure 3: V70 HUD Compatibility with Various Car Models
3. Setup and Installation
- Locate your vehicle's OBD2 port. This is typically found under the dashboard on the driver's side.
- Connect the Type-C end of the provided cable to the V70 HUD device.
- Connect the OBD 16-pin end of the cable to your vehicle's OBD2 port.
- Mount the V70 HUD in a suitable location on your dashboard or windshield using the provided stand. Ensure it does not obstruct your view of the road.
- Start your vehicle. The V70 HUD will automatically power on, search for your car's engine protocol, and begin displaying public engine data.

Figure 4: V70 HUD Product Dimensions and Adjustable Stand
4. Operating Instructions
The V70 HUD features intuitive controls for navigation and settings adjustment. Use the buttons on the device to scroll through menus and confirm selections.
4.1. Menu Navigation
Press the 'OK' button to enter the main menu. Use the 'Up' and 'Down' buttons to navigate through options such as Language, System Para Set, OBD Para Set, Alarm Set, OBD Diagnose, 0-100KM Time, and About. Press 'OK' to select an option.
4.2. Setting Alarms
To set alarm values for RPM, VSS (Vehicle Speed Sensor), ECT (Engine Coolant Temperature), or VOL (Voltage):
- From the Main Menu, select "Alarm Set".
- Choose the specific alarm you wish to set (e.g., "RPM Alarm").
- Use the 'Up' and 'Down' buttons to adjust the alarm threshold.
- Press 'OK' to confirm the setting.
When the vehicle reaches the set alarm point, the device will automatically trigger an audible alarm.
4.3. Viewing Data Stream and Diagnostics
The V70 HUD can display a wide range of real-time data and perform diagnostic functions:
- From the Main Menu, select "OBD Diagnose".
- Choose "Data Stream" to view live vehicle data such as Calculated LOAD Value, Engine Coolant Temperature, Intake Manifold Absolute Pressure, Engine RPM, Vehicle Speed, and many more (up to 92 functions).
- You can also select "Read Codes" to view diagnostic trouble codes (DTCs) or "Clear Codes" to erase them.

Figure 5: OBD Stream and Diagnostic Functions
4.4. 0-100KM Time Test
To test the vehicle's acceleration time from 0 to 100 KM/H:
- From the Main Menu, select "0-100KM Time".
- Follow the on-screen prompts to initiate the test.
4.5. Customizing Display Functions
The V70 HUD allows you to choose your preferred functions to display on the main interface, such as RPM or Speed, along with other parameters like coolant temperature, intake air temperature, and more.

Figure 6: Custom Functions Display Options
4.6. Language Settings
The device supports multiple languages, including English, Spanish, and Russian. You can change the language from the "Language" option in the Main Menu.

Figure 7: Language Options on V70 HUD
4.7. Official Product Video
Video 1: VJOYCAR V70 New Car OBD2 HUD On-Board Computer. This video demonstrates the device's menu navigation, alarm setting, data stream viewing, and 0-100KM time test features.
5. Maintenance
To ensure the longevity and optimal performance of your VJOYCAR V70 HUD, follow these maintenance guidelines:
- Keep the device clean by wiping it with a soft, dry cloth. Avoid using abrasive cleaners or solvents.
- Ensure the OBD2 cable connections are secure and free from damage.
- Avoid exposing the device to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
- Store the device in a cool, dry place when not in use.
6. Troubleshooting
If you encounter issues with your VJOYCAR V70 HUD, consider the following:
- Device not powering on: Ensure the OBD2 cable is securely connected to both the device and the vehicle's OBD2 port. Verify that the vehicle's ignition (ACC) is on.
- Limited data display or no data: While the V70 supports a wide range of vehicles, some older cars (pre-2008) or specific models may have limited OBD2 protocol compatibility, resulting in fewer data points being displayed or no data at all. This is due to the vehicle's internal systems, not a defect in the HUD.
- Inaccurate readings: Ensure the device is properly configured for your vehicle's units (MPH/KM/H). If issues persist, refer to the "System Para Set" menu for calibration options if available, or contact customer support.
- Alarm not sounding: Check the "Alarm Sound" setting in the "System Para Set" menu to ensure it is enabled. Verify that alarm thresholds are set appropriately.
For any fast assistance or if the device cannot work on your car, please contact VJOYCAR customer service. They are available 7 days a week, 24 hours a day.
7. Specifications
| Item Model Number | V70 |
| Brand | VJOYCAR |
| Screen Size | 5.8 Inches |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Item Weight | 0.15 Kilograms |
| Dimensions (L x W x H) | 0.01 inches (approximate, as per provided data) |
| First Available Date | December 11, 2020 |
8. Warranty and Support
VJOYCAR is committed to providing excellent customer service. If you require any assistance during the usage of your V70 HUD, please do not hesitate to contact VJOYCAR customer support. They are available to help 7 days a week, 24 hours a day.
Additionally, protection plans may be available for purchase to extend coverage beyond the standard warranty. Please refer to your purchase documentation or retailer for details on available protection plans.



