1. Introduction
Thank you for choosing the CAIXI 8Core Universal Android Car Radio. This device is designed to enhance your driving experience with advanced multimedia features, navigation, and smart connectivity. This manual provides detailed instructions for installation, operation, and maintenance to ensure optimal performance and user satisfaction.
2. Product Features
The CAIXI 8Core Universal Android Car Radio offers a wide range of features:
- Operating System: Android 11
- Processor: 8Core 1.8 GHz (8CPU+8GPU)
- Memory & Storage: Various RAM/ROM options (e.g., 1G+32GB, 2G+32GB, 4G+64GB, 8G+256GB)
- Display: 7, 9, or 10.1-inch QLED IPS screen (1280*720 resolution for 4G version IPS)
- Connectivity: Built-in WiFi, optional 4G LTE SIM support (dual SIM card slots for GX9 Plus), Bluetooth 5.1
- Audio: Built-in HiFi DSP with subwoofer output, 7-channel RCA cable
- Navigation: Built-in offline map with free updates (supports Navitel/Igo), Google Maps support
- Multimedia: Supports various digital media formats (CD, DVD-R/RW, DVD-RAM, VIDEO CD, Mp3, MP4, WMA, JPEG), video output for headrest displays
- Special Functions: Support steering wheel control, Mobile Phone Mirror Link (iPhone & Android), CarPlay, Android Auto, Reversing Input (rear view camera), Split Screen, Voice Control (optional AI Voice Car System), ADAS DVR (optional), TPMS (optional)
- User Interface: Advanced UI with customizable button colors (7 options for Q9/S9 Plus/W9/GX9 Support)
- Additional: Built-in cooling fan (for GX9 Pro, W9/GX9 Plus), external microphone support (optional)
3. Package Contents
Please check the box for the following items:

- 1x Main Unit (Car Radio)
- 1x Power Cable
- 1x RCA Cable (7 channels including subwoofer cable)
- 1x Camera Input/BT Antenna
- 2x USB Cables
- 1x GPS Antenna
- 1x Bracket + Frame (7-inch frame included)
- For 4G Version Only: 1x 4G SIM Cable, 1x 4G Antenna
- Optional: 1x Microphone
4. Installation Guide
Proper installation is crucial for the optimal performance of your car radio. It is recommended to have this device installed by a professional technician.
4.1. Physical Installation
The unit comes with a bracket and frame for secure mounting. Ensure the correct size (7, 9, or 10.1 inches) is selected for your vehicle's dashboard.

4.2. Wiring Diagram
Refer to the following diagrams for correct wiring connections:

Key Connections:
- 11 Back: Reverse signal input.
- 12 +ILL: Illumination signal.
- 13 ANT: Antenna connection.
- 14 SW2, 15 SW1: Steering Wheel Control inputs.
- 16 GND: Ground.
- 17 ACC: Accessory power (switched with ignition).
- 18 B+BATTERY: Constant 12V power.
- 19 REAR L+, 20 REAR L-, 21 REAR R-, 22 REAR R+, 23 FRONT R+, 24 FRONT R-, 24 FRONT L+, 24 FRONT L-: Speaker outputs.
4.3. Rear View Camera Wiring
Connect the rear view camera as shown in the diagram. Ensure the power cable is connected to the reversing light for automatic activation.

Steps:
- Connect the camera's video cable to the AV input on the car radio.
- Connect the camera's power cable (positive) to the reversing light's positive terminal.
- Connect the camera's power cable (negative) to a suitable ground point.
- Connect the trigger line (red wire) from the video cable to the reversing light electrode and the display trigger line on the car radio.
4.4. SIM Card Insertion (for 4G Version)
For 4G versions, insert the SIM card with the chip facing the hardware back cover and the bevel facing outward.

5. Initial Setup
5.1. First Power-On
After successful installation, turn on your vehicle's ignition. The car radio should power on automatically.
5.2. Language Settings
The device supports over 70 languages. Navigate to 'Settings' to select your preferred language.

5.3. Wallpaper and Boot Logo
Customize your device's appearance:
- Wallpaper: Go to 'Settings' > 'Display' > 'Wallpaper' to choose from gallery or pre-installed wallpapers.
- Boot Logo: In 'Car Settings' or 'Factory Settings', locate 'Logo Settings' to select a custom boot logo from various car brands or set a default Android logo.
5.4. Adjustable Button Color
For supported models (Q9/S9 Plus/W9/GX9), you can adjust the button light color. There are 7 options available in the settings.

6. Operating Instructions
6.1. User Interface Navigation
The main screen provides access to various applications and settings. Swipe left/right to navigate between screens. Common apps include Navigation, Radio, Bluetooth, Apps, Music, and Settings.

6.2. Radio
Access the 'Radio' app to tune into FM/AM stations. Use the self-motion search or manual tuning to find channels. Save your favorite stations for quick access.
6.3. Music and Video Playback
Play music and videos from internal storage or connected USB drives. The device supports various formats including MP3, MP4, WMA, JPEG, AVI, and more.
6.4. Navigation (GPS)
The unit comes with pre-installed offline maps (Navitel/Igo) and supports online navigation apps like Google Maps, Yandex, and Waze. Ensure the GPS antenna is properly connected for accurate positioning.

6.5. Bluetooth Connectivity
Connect your smartphone via Bluetooth 5.1 for hands-free calling and music streaming. The device supports phonebook synchronization with name search function and caller ID display.

6.6. CarPlay / Android Auto
Connect your iPhone or Android device to use CarPlay or Android Auto. This allows for intelligent and safe use of phone features like navigation, calls, messages, and music directly on the car radio screen.

6.7. ADAS DVR (Optional)
If an ADAS DVR is connected, the system can provide real-time monitoring, lane departure warnings, and front car distance warnings to enhance driving safety.

6.8. TPMS (Tire Pressure Monitoring System - Optional)
With optional TPMS sensors, the device displays real-time tire pressure and temperature. Alarms are triggered if limits are exceeded.

6.9. AI Voice Car System (Optional)
An optional AI Voice Car System allows you to control various functions using voice commands, such as navigation, music playback, and video control. This feature requires separate activation.

6.10. Steering Wheel Control
The device is compatible with most steering wheel control functions. You can learn and map controls in the settings to easily switch songs, channels, and adjust volume for a safer driving experience.

6.11. Sound Settings (DSP)
The built-in DSP allows for precise sound frequency control. Adjust subwoofer, low, mid, and high frequencies, or choose from preset equalizer modes like Custom, Classical, Jazz, and Pop. You can also adjust the sound field to optimize audio for different seating positions.

7. Maintenance
7.1. Cleaning
Use a soft, dry cloth to clean the screen and exterior of the unit. Avoid using harsh chemicals or abrasive materials that could damage the surface.
7.2. Software Updates
The system may receive periodic software updates to fix bugs and improve performance. Follow the official CAIXI store for automatic update information.
8. Troubleshooting
- No image from the camera: Ensure the camera is correctly wired to the AV input and the trigger line is properly connected to the reversing light. Check the camera settings in the car radio menu.
- Device not powering on: Verify all power connections (B+BATTERY, ACC, GND) are secure and receiving appropriate voltage (12V). Check vehicle fuses.
- Poor GPS signal: Ensure the GPS antenna is installed in a location with a clear view of the sky and is securely connected to the unit.
- Bluetooth connection issues: Make sure Bluetooth is enabled on both the car radio and your mobile device. Try unpairing and re-pairing the devices.
- Touch screen unresponsiveness: Restart the device. If the issue persists, check for any physical damage or contact support.
9. Specifications
| Feature | Specification |
|---|---|
| Operating System | Android |
| CPU | 8Core 1.8 GHz (8CPU+8GPU) |
| RAM | 8G (Optional: 1G, 2G, 4G) |
| ROM | 128G (Optional: 16G, 32G, 64G, 256G) |
| Display Size | 7", 9", 10.1" |
| Resolution | QLED 1280*720 (4G version IPS) |
| Output Power | 50WX4 |
| Voltage | 12 V |
| Item Weight | 1.3kg |
| Item Size | 240*146mm |
| Max External Memory | 128G |
| Interface | 2*USB, RCA, Bluetooth (Optional) |
| Digital Media Format | CD, DVD-R/RW, DVD-RAM, VIDEO CD, Mp3, MP4, WMA, JPEG |
| OSD Language | Chinese (Simplified/Traditional), Arabic, English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Spanish, Thai, Turkish, Vietnamese, and more (70+ languages) |
| Material | Abs+ |
| Certification | CE |
| Built-in Screen | Yes |
| Touch Screen | Yes |
| Built-in DVD Player | No |
| TF/Micro SD Slot | 0 |
| Din | Double Din |
| WiFi | Built-in (5G and 2.4G WiFi) |
| 4G LTE SIM | Optional |
| Subwoofer Output | Support |
| AV-OUT | WiFi version support, 4G version not support |
| Rear View Camera Input | Support (Free Gift) |
| Microphone | Built-in (External microphone optional) |

10. User Tips
- Compatibility Check: Always verify the car radio's compatibility with your specific car model and year before purchasing or attempting installation.
- Wiring Accuracy: For camera functionality, ensure all wiring, especially the trigger line, is correctly connected to avoid display issues.
- Power Requirements: The unit operates on 12V. Confirm your vehicle's power supply matches this requirement.
- Navigation Updates: While offline maps are pre-installed, you can download and install local navigation apps from the Google Play Store for updated information.
- Contact Information: Ensure your contact details (phone number, post code, delivery address) are accurate in the order system to prevent shipping delays.
11. Warranty and Support
For technical assistance, please refer to the warranty card included with your product or contact CAIXI customer support via the AliExpress messaging system. We aim to respond within 24 hours, accounting for time zone differences. Our commitment to service is lifelong, and we are always ready to help improve your experience.





