1. Product Overview
The EKIY KK5 Car Radio is an advanced Android 10 multimedia system designed specifically for the Volkswagen Polo Mk4 IV (2001-2009). It features a high-resolution QLED display, integrated GPS navigation, and a suite of smart car functionalities to enhance your driving experience. This unit is a 2-Din car stereo, but it does not include a built-in DVD player.

Figure 1: EKIY KK5 Car Radio installed in a Volkswagen Polo dashboard.
2. Package Contents
Please check the package contents carefully upon receipt:
- EKIY KK5 Head Unit (with frame for Volkswagen Polo Mk4 IV)
- AHD Camera
- Microphone (MIC)
- Cooling Fan
- Power Cable
- GPS Antenna
- USB Cables (x2)
- V-IN Cable
- WiFi RCA Cable (for KK1/KK2 models)
- 4G SIM RCA Cable (for KK3/KK5 models)
- 4G Antenna (for KK3/KK5 models)

Figure 2: Included components in the package.
3. Setup and Installation
This unit is designed for plug-and-play installation in compatible Volkswagen Polo Mk4 IV models. However, professional installation is highly recommended for car electronics to ensure proper functionality and avoid damage.
3.1 Wiring Connections
Ensure all cables are securely connected according to the provided wiring diagrams. The unit supports CAN-Bus for integration with your vehicle's existing systems.

Figure 3: Wiring for Carplay and Android Auto.

Figure 4: Optical Fiber and Coaxial Digital Signal Output (KK5 only).
4. Operating Instructions
4.1 Basic Navigation and Interface
The EKIY KK5 operates on Android 10 with a user-friendly touch screen interface. Navigate through apps and settings by tapping and swiping.

Figure 5: KK5 User Interface.
4.2 GPS Navigation
The unit includes built-in GPS and supports various navigation applications such as IGO, Navitel, Waze, Sygic, and Google Maps. Ensure your maps are updated for optimal performance.

Figure 6: GPS Navigation interface.
4.3 Multimedia Playback
Play various digital media formats including MP3, MP4, WMA, and JPEG. Access your music and videos through the dedicated player apps.
Video 1: Product demonstration showing various features including music and video playback.
4.4 Radio Functions
The unit supports FM/AM/RDS radio. Additionally, Network Radio allows you to listen to online radio stations without noise interference.

Figure 7: Network Radio interface.

Figure 8: Excellent Radio Signal with TDA 7708 chip.
4.5 Bluetooth Connectivity
Connect your smartphone via Bluetooth for hands-free calls, phonebook access, and music streaming. KK3/KK5 models support Bluetooth 5.0, while KK1/KK2 support Bluetooth 2.1.

Figure 9: Bluetooth 5.0 interface.
4.6 CarPlay & Android Auto
Enjoy seamless smartphone integration. KK3/KK5 models offer wireless and wired CarPlay/Android Auto. KK2/KK3 models support wired connections. For KK1, an external CarPlay dongle is required.

Figure 10: CarPlay & Android Auto interfaces.
4.7 Split Screen Functionality
Run two applications simultaneously on the screen, such as navigation and a video player.

Figure 11: Split Screen in action.
4.8 Steering Wheel Controls
The unit supports original steering wheel controls, allowing you to manage audio and other functions without taking your hands off the wheel. If your car lacks SWC buttons, optional external buttons can be purchased.

Figure 12: Steering Wheel Buttons learning interface.
4.9 AI Voice Assistant (Optional)
Control your head unit with voice commands for navigation, music, and more. Language support includes English, Russian, Spanish, Portuguese, German, Italian, and French.

Figure 13: AI Voice Assistant.
4.10 Display Settings
Customize the button backlight color to match your vehicle's interior or your personal preference.

Figure 14: Button Color Changing Function.
4.11 Language Settings
The system supports multiple languages. You can change the display language in the settings menu.

Figure 15: Language Switch menu.
5. Optional Features and Accessories
Enhance your driving experience with these optional accessories (may require separate purchase):
- Rear View Camera: Automatically switches to the back-up camera view with parking lines when reversing. Available in 720P AHD or 480P D.T. camera options.
- 360° Camera: (For KK3/KK5 models only) Provides a panoramic view of your car's surroundings, automatically switching views when turning or reversing.
- DVR + ADAS: 1080P HD ADAS DVR for recording and advanced driver-assistance features like Forward Collision Warning and Lane Departure Warning.
- OBD II: On-board diagnostics to monitor your car's status via a compatible app.
- TPMS (Tire Pressure Monitoring System): Real-time display of tire pressure and temperature, with alarms for abnormal readings.
- Video-out: Allows rear seat passengers to watch videos on headrest monitors.
- DAB+ Radio: Universal for Android radios in countries with DAB+ signals.

Figure 16: Rear View Camera display.

Figure 17: 360° Camera views.

Figure 18: USB DVR+ADAS features.

Figure 19: OBD II interface.

Figure 20: TPMS display.

Figure 21: Video-Out function.
6. Maintenance
To ensure the longevity and optimal performance of your EKIY KK5 Car Radio, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the screen and exterior. Avoid abrasive cleaners or solvents.
- Software Updates: Periodically check for and install system updates to ensure you have the latest features and bug fixes.
- Temperature: Avoid exposing the unit to extreme temperatures.
- Power: Ensure stable power supply to prevent damage.
7. Troubleshooting
If you encounter issues with your EKIY KK5 Car Radio, refer to the following common troubleshooting steps:
- No Power: Check all power connections. Ensure the car's ignition is on.
- No Sound: Verify speaker connections and volume settings. Check DSP settings if applicable.
- Touch Screen Unresponsive: Try restarting the unit. If issues persist, a touch screen calibration might be needed (accessible in Factory settings).
- GPS Signal Issues: Ensure the GPS antenna is properly installed and has a clear view of the sky.
- Bluetooth Connectivity Problems: Ensure Bluetooth is enabled on both the head unit and your device. Try re-pairing the devices.
- System Lag/Freezing: Close unnecessary background applications. Consider a factory reset if the issue is persistent (backup important data first).
- Accessing Factory Settings: Some advanced settings, such as CAN-Bus type or video format, are located in the 'Factory' menu and may require a password (e.g., '3368' or '123456').
8. Specifications
The EKIY KK5 Car Radio offers various configurations. Below is a general overview and a comparison table for different models (KK1, KK2, KK3, KK5).
| Feature | Specification |
|---|---|
| Operating System | Android 10 |
| Display Size | 9 inch |
| Resolution | 1280*720 (QLED Blu-ray) |
| CPU | 8-Core UIS7862 (2*A75+6*A55 12NM ARM) |
| RAM & ROM Options | 1G+16G, 2G+32G, 4G+32G, 4G+64G, 8G+128G, 8G+256G |
| Out Power | 4*45w |
| Voltage | 12 V |
| Item Weight | 1.5kg |
| Digital Media Format | Mp3, MP4, WMA, JPEG |
| OSD Language | Chinese (Simplified/Traditional), Arabic, English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Thai, Turkish, Vietnamese, and many more. |
| Special Features | Built-In Speaker/Microphone, WiFi, Steering Wheel Control, 3G/4G Network, Can-Bus, Built-in GPS, Charger, Mobile Phone, MP3 players, Reversing Input, Split Screen |
| Built-in DVD Player | No |
| Built-in CD Player | No |
8.1 Model Comparison

Figure 22: EKIY KK1, KK2, KK3, KK5 Model Comparison.
9. User Tips
- Vehicle Compatibility: The included frame is designed for Volkswagen Polo Mk4 IV models from 2001-2009. Always double-check compatibility with your specific vehicle year and model.
- Steering Wheel Controls & Sensors: The unit supports original steering wheel controls. Existing reverse sensors should continue to function or can be integrated with the unit's display.
- Television Functionality: While the unit supports video playback, it typically does not include a built-in tuner for broadcast television. External TV tuners may be required for this functionality.
- Factory Settings Access: Some advanced configuration menus (e.g., 'Factory' settings) may require a password. Common passwords include '3368' or '123456'. Refer to the system information for details.
10. Warranty and Support
Your EKIY KK5 Car Radio comes with a warranty:
- 15 days return for refund
- 365 days return for repairing
For technical support or warranty claims, please contact your seller or the EKIY customer service directly. Ensure you have your purchase details and product model information ready.





