1. Introduction
The KJ-NAVI Car Radio Multimedia Player is an advanced infotainment system designed specifically for Audi A4 models from 2000 to 2009 (including B6, B7, S4, and RS4 variants). It features an Android 14 operating system, GPS navigation, WiFi, Bluetooth connectivity, and optional 4G support, providing a comprehensive and modern driving experience.

Product Highlights
- Android 14 Operating System
- Built-in GPS Navigation
- WiFi Connectivity
- Bluetooth for calls and music
- Optional 4G Network support
- Support for Steering Wheel Control
- Split Screen Functionality
- Optional ADAS DVR, Rear View Camera, and 360 Panoramic Camera
- Optional Built-in DSP for enhanced audio
2. Vehicle Compatibility
This multimedia player is compatible with Audi A4 models manufactured between 2000 and 2009, including the B6, B7, S4, and RS4 variants. Please ensure your vehicle's original center console matches the product's design for proper fitment.

Important Note:
If your car is equipped with a "JBL" system or an amplifier, an additional CANBUS module may be required for proper functionality. Please consult with a professional installer or the seller for specific requirements.

3. Specifications
The KJ-NAVI Multimedia Player comes in various configurations (H, Y1, Y2, T1, X20 series) with differing specifications. Please refer to the table below for a detailed comparison.

| Feature | Specification |
|---|---|
| Brand Name | KJ-NAVI |
| Operating System | Android |
| Display Size | 9" |
| Resolution | 1024*600P / 1280*720P / 2000*1200P (depending on series) |
| RAM | 1G/4G/8G (depending on series) |
| ROM | 32G/64G/128G/256G (depending on series) |
| Max External Memory | 128G |
| Voltage | 12 V |
| Item Weight | 1.6kg |
| Din | One Din |
| Is touch screen | Yes |
| Built-in Screen | Yes |
| Built-in DVD Player | No |
| Built-in CD player | No |
| TF/Micro SD Slot | 0 |
| Digital Media Format | Mp3, MP4, WMA, JPEG |
| OSD Language | Multi-language support (Chinese, English, German, Russian, Spanish, etc.) |
| Certification | CE, FCC, RoHS |
4. Package Contents
Upon opening the package, please verify that all the following items are included:

- Main Multimedia Player Unit
- Power Cable
- RCA Cable
- GPS Module
- Video Input Cable
- USB Cable (x2)
- 4G SIM RCA Cable (Only for models with 4G function)
- Installation Tools
5. Installation and Initial Setup
Warning: Professional installation is highly recommended. Incorrect installation can damage the device or your vehicle's electrical system.
5.1 Pre-Installation Checklist
- Ensure your vehicle is turned off and the battery is disconnected.
- Verify all package contents are present.
- Read through this manual completely before starting.
- Gather necessary tools (provided in package, plus any additional automotive tools).
5.2 Installation Steps (General Guide)
- Remove Original Head Unit: Carefully remove your vehicle's existing radio or multimedia unit. Refer to your Audi A4's service manual for specific instructions on dashboard disassembly.
- Connect Wiring Harness: Connect the provided power cable and RCA cables to the corresponding ports on the new multimedia player and your vehicle's wiring harness. Ensure all connections are secure.
- Install GPS Module: Connect the GPS module and place it in a location with a clear view of the sky (e.g., on the dashboard or under the windshield).
- Connect USB Cables: Connect the USB cables for external devices or optional accessories.
- Connect Video Input Cable: If installing a rear view camera or other video input, connect the video input cable.
- Connect 4G SIM RCA Cable (if applicable): For models with 4G functionality, insert your SIM card into the 4G SIM RCA cable and connect it to the unit.
- Test Functionality: Before fully reassembling the dashboard, temporarily connect the battery and power on the unit to test basic functions (power, display, audio, touch screen, steering wheel controls).
- Secure the Unit: Once tested, carefully mount the multimedia player into the dashboard opening.
- Reassemble Dashboard: Reassemble all removed dashboard components.
- Final Checks: Reconnect the battery, start the vehicle, and perform a comprehensive test of all features.
5.3 Cooling Fan Installation (for Y1, Y2, T1, X20 series)
The cooling fan helps dissipate heat and maintain optimal operating temperature for the unit. The H series does not support this feature.

6. Operating Instructions
6.1 User Interface (UI)
The Android Smart System provides a brand new navigation experience with a customizable user interface. The theme UI of different styles and types will be updated over time, allowing you to choose freely according to your personal preferences.

6.2 GPS Navigation & WiFi
The unit features built-in GPS navigation to help you drive safer. With the built-in WiFi function, you can fully enjoy internet browsing and online services in your car. Note: The H series does not support GPS function.

6.3 Bluetooth Function
Support Bluetooth calls, Bluetooth music, and Bluetooth phonebook for hands-free communication and audio streaming.

6.4 Multimedia Playback
Enjoy high-definition videos and MP3 music directly on the unit. You can play media from USB drives or stream online content via WiFi.

6.5 Split Screen Function
The split screen feature allows you to run two applications simultaneously, such as watching maps while playing videos, listening to music, or browsing web pages, saving time and enhancing multitasking.

6.6 Steering Wheel Control
The unit supports steering wheel button control, allowing you to freely switch functions without taking your hands off the wheel.

6.7 Radio (FM/AM/RDS)
The radio supports automatic and manual station search. Different series offer varying radio capabilities: H/Y1 Series only support FM, Y2 Series only support FM/RDS, while T1 and X20 series support FM/RDS/AM.

6.8 Color Button Lights
You can freely choose the color of the button lights to match your vehicle's interior or personal preference. Note: The X20 series does not support this feature.

7. Optional Accessories
Enhance your driving experience with various optional accessories compatible with your KJ-NAVI Multimedia Player.
7.1 ADAS DVR (Optional)
Connect a USB ADAS DVR for advanced driver-assistance features, such as lane departure warnings and front collision alerts. Note: H/Y1 series do not support ADAS DVR.

7.2 Rear View Camera (Optional)
An AHD rear view camera provides excellent night vision and automatically switches to the reversing screen with parking lines when backing up, aiding in safer parking.

7.3 360 Panoramic Camera (Optional)
Eliminate blind spots and prevent scratches with an optional 360 panoramic camera system, offering a comprehensive surround view. Note: H/Y1/Y2 series do not support the 360 camera. This feature is only available for T1/X20 series.

7.4 4G Network (Optional)
Connect to the 4G network (for supported models) to watch live streams, listen to music online, and enjoy a true 4G experience. Note: H/Y1/Y2 series do not support 4G function.

7.5 Built-in DSP (Optional)
DSP sound effects offer a more dynamic and smoother audio experience. You can customize sound quality according to your preferences. Note: H Series do not support DSP function.

7.6 Wireless CarPlay & Wired Android Auto (Optional)
Enjoy seamless integration with your smartphone using Wireless CarPlay or Wired Android Auto for navigation, music, calls, and more. Note: The H series does not support this feature.

8. Care and Maintenance
- Cleaning: Use a soft, dry cloth to clean the screen and exterior. Avoid abrasive cleaners or solvents.
- Temperature: Do not expose the unit to extreme temperatures or direct sunlight for prolonged periods.
- Moisture: Keep the unit dry. Moisture can damage internal components.
- Software Updates: Periodically check for software updates to ensure optimal performance and access to new features. Follow the on-screen instructions for updates.
9. Troubleshooting
If you encounter issues with your multimedia player, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on | Loose power connection, blown fuse, vehicle battery issue. | Check power cable connections. Inspect vehicle fuses. Ensure vehicle battery is charged. |
| No sound | Volume too low, mute activated, incorrect audio settings, loose speaker wires. | Increase volume. Check mute status. Verify audio output settings. Inspect speaker connections. |
| GPS not working/inaccurate | GPS antenna not properly connected or positioned, outdated maps, H series unit (no GPS). | Ensure GPS antenna has a clear view of the sky and is securely connected. Update maps if necessary. Confirm your unit series supports GPS. |
| Bluetooth connection issues | Bluetooth off on unit or phone, device not paired, interference. | Ensure Bluetooth is enabled on both devices. Re-pair the device. Move away from sources of interference. |
| Touch screen unresponsive | Software glitch, screen protector interference. | Restart the unit. Remove and reapply screen protector if applicable. |
| Unit freezes/crashes | Software issue, too many apps running, overheating. | Restart the unit. Close unnecessary applications. Ensure proper ventilation (check cooling fan if applicable). |
If the problem persists after trying these solutions, please contact customer support for further assistance.
10. User Tips
- Regular Updates: Keep your system software and navigation maps updated for the best performance and latest features.
- Personalize Settings: Explore the various settings for audio, display, and button colors to customize your experience.
- Safe Driving: Always prioritize safe driving. Use voice commands and steering wheel controls to minimize distractions.
- Backup Data: Regularly back up important data from your device to prevent loss.
11. Warranty and Support
11.1 Product Warranty
This product comes with a 1-year original factory warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. Please note that accessories are typically excluded from this warranty.
11.2 Warranty Exclusions
The warranty will be invalid under the following circumstances:
- Damage caused by abnormal wear and tear, dirt, misuse, improper installation or operation, negligence, or accidents.
- Any damage resulting from improper packaging when the product is returned for service.
- Disassembly or repair performed by unauthorized personnel.
11.3 Customer Support
For technical assistance, troubleshooting, or warranty claims, please contact the seller or manufacturer's customer support. Provide your purchase details and a clear description of the issue to expedite the support process.
12. Product Demonstration Video
Watch this video for a visual overview of the product's features and functionalities.





