1. Introduction
Thank you for choosing the GOHHDL Android 15 Car Radio. This manual provides detailed instructions for the installation, operation, and maintenance of your new car stereo system. This unit is specifically designed for Toyota Aygo, Peugeot 108, and Citroen C1 models manufactured between 2015 and 2020. It features an Android 15 operating system, 4GB RAM, 128GB ROM, a 9-inch touch screen, and supports Carplay, Android Auto, GPS navigation, WiFi, Bluetooth, FM/RDS radio, 32-band EQ, Steering Wheel Control (SWC), and a rear camera.
Please read this manual thoroughly before use to ensure proper operation and to maximize your enjoyment of the product.
2. Packing List & Components
Before installation, please verify that all items listed below are included in your package. If any items are missing or damaged, please contact your retailer.

Image: Packing List and Dimensions. This image illustrates the main unit's dimensions (9-inch screen, 232mm width, 222mm height, 49mm depth) and lists the included accessories. The accessories include the main power cable, RCA cables, USB cables, camera input cable, radio antenna, GPS antenna, AHD rear camera, installation tools, microphone, and a user manual.
- Main Head Unit (9-inch touch screen)
- Power Cable
- RCA Cable
- USB Cable (x2)
- Camera Input Cable
- Radio Antenna
- GPS Antenna
- AHD Rear Camera
- Installation Tool
- External Microphone
- User Manual
3. Setup & Installation
Installation of this car radio requires technical knowledge and experience. It is highly recommended to have the unit installed by a qualified professional to avoid damage to the product or your vehicle's electrical system.
3.1 Basic Wiring Connections
- Power Cable: Connect the main power harness to your vehicle's power supply (ACC, B+, GND). Ensure correct polarity.
- Radio Antenna: Connect the vehicle's radio antenna to the unit's antenna input.
- GPS Antenna: Mount the GPS antenna in a location with a clear view of the sky, typically on the dashboard or under the windshield, and connect it to the unit.
- USB Cables: Connect the provided USB cables for external devices or data transfer.
- Rear Camera: Connect the AHD rear camera cable to the dedicated camera input on the unit. Ensure the reverse trigger wire is connected to your vehicle's reverse light circuit.
- RCA Cables: Use RCA cables for external amplifiers or additional audio/video inputs/outputs if desired.
- Steering Wheel Control (SWC): Connect the SWC wires to your vehicle's steering wheel control interface. Configuration will be done in the settings menu.
3.2 Initial Power On
After all connections are securely made, turn on your vehicle's ignition. The unit should power on automatically. Follow any on-screen prompts for initial setup, such as language selection and time zone.
4. Operating Instructions
4.1 Wireless Carplay & Android Auto
This unit supports wireless Carplay and Android Auto, allowing seamless integration with your smartphone for navigation, music, calls, and more.

Image: Wireless Carplay, Android Auto, and Mirror Link. This image displays the user interface for Carplay and Android Auto, showing various apps like Spotify, WhatsApp, and navigation. It also illustrates the Mirror Link feature, which can be connected both wired and wirelessly.
- Ensure your phone's Bluetooth and Wi-Fi are enabled.
- On the car radio, open the Carplay or Android Auto application.
- Follow the on-screen instructions to pair your smartphone.
- Once connected, you can use voice commands (e.g., "Hey Siri" or "OK Google") to control various functions.
4.2 Mirror Link (Wired/Wireless)
Mirror Link allows you to display your smartphone's screen directly onto the car radio's display. This can be done via a wired USB connection or wirelessly.
- Wired Connection: Connect your smartphone to the car radio using a USB cable. Enable USB debugging or screen mirroring on your phone if prompted.
- Wireless Connection: Ensure both devices are connected to the same Wi-Fi network or use the unit's Wi-Fi hotspot. Follow the instructions in the Mirror Link app on the head unit.
4.3 Bluetooth, FM/RDS Radio & 32-Band EQ
The unit features integrated Bluetooth for hands-free communication and audio streaming, a high-quality FM/RDS radio, and a 32-band equalizer for audio customization.

Image: Bluetooth, FM/RDS, and 32-Band EQ. This image shows the Bluetooth calling interface, the FM radio tuner with frequency display, and the graphical interface for the 32-band equalizer, allowing detailed sound adjustments.
- Bluetooth: Go to the Bluetooth menu, enable Bluetooth on your phone, search for the car radio, and pair the devices. You can then make/receive calls and stream music.
- FM/RDS Radio: Select the Radio app. Use the touch screen to scan for stations, save presets, and view RDS information (if available). The unit supports storing up to 30 stations.
- 32-Band EQ: Access the Equalizer settings to adjust audio frequencies for a personalized sound experience.
4.4 GPS Navigation & WiFi
The car radio has built-in GPS for navigation and WiFi for internet connectivity.
- GPS Navigation: Open the Navigation app. The unit supports both online and offline maps. Ensure the GPS antenna is properly installed for optimal signal reception.
- WiFi: Connect to a local Wi-Fi network or use your phone's hotspot to access the internet. This allows you to download apps, stream media, and browse online.
4.5 Rear Camera & Steering Wheel Control (SWC)
Enhance driving safety with the included rear camera and integrate your vehicle's steering wheel controls.

Image: Rear Camera and Steering Wheel Control. This image displays the view from the AHD rear camera, highlighting its waterproof, wide-angle, and night vision capabilities. Below it, the steering wheel control learning interface is shown, allowing users to map vehicle steering wheel buttons to radio functions.
- Rear Camera: When the vehicle is put into reverse gear, the display will automatically switch to the rear camera view. The AHD camera provides a clear, wide-angle, waterproof, and night vision image.
- Steering Wheel Control: In the unit's settings, navigate to the SWC configuration menu. Follow the on-screen instructions to program your steering wheel buttons to control functions like volume, track change, and mode selection.
4.6 Split Screen Function & Additional Connectivity
The unit supports split-screen multitasking and various external device connections.

Image: Split Screen and Connectivity Options. This image demonstrates the split-screen feature, allowing two applications (e.g., radio and settings) to be viewed simultaneously. It also highlights support for external accessories such as DAB+, OBD2, DVR, external microphone, and USB devices.
- Split Screen: To use split screen, open an application, then long-press the recent apps button or drag an app to the side of the screen (depending on the Android version) to select a second app to run simultaneously.
- Additional Connectivity: The unit supports external DAB+ tuners, OBD2 diagnostic tools, DVRs (dash cameras), external microphones, and USB storage devices. These accessories are typically sold separately.
5. Maintenance
Proper maintenance ensures the longevity and optimal performance of your car radio.
- Cleaning the Screen: Use a soft, lint-free cloth slightly dampened with water or a screen cleaner specifically designed for electronics. Avoid harsh chemicals or abrasive materials.
- Software Updates: Periodically check for available software updates through the unit's settings menu or the manufacturer's website. Updates can improve performance and add new features.
- Avoid Extreme Temperatures: Do not expose the unit to extreme heat or cold for extended periods, as this can affect its components.
6. Troubleshooting
If you encounter issues with your car radio, refer to the following common problems and solutions.
- No Power:
- Check all power connections (ACC, B+, GND) to ensure they are secure and correctly wired.
- Verify the vehicle's fuse for the radio is not blown. - No Sound:
- Check speaker connections.
- Ensure the volume is not muted or set to zero.
- Verify audio output settings in the unit's menu. - GPS Signal Loss:
- Ensure the GPS antenna is properly installed and has a clear view of the sky.
- Check the GPS settings in the unit. - Bluetooth Connection Issues:
- Ensure Bluetooth is enabled on both the car radio and your smartphone.
- Delete previous pairings and try re-pairing the devices.
- Restart both devices. - Unit Freezes or Responds Slowly:
- Restart the unit by turning off the vehicle's ignition and then restarting.
- If the issue persists, a factory reset may be necessary (note: this will erase all user data and settings).
For persistent issues not covered here, please contact GOHHDL customer support or your installer.
7. Specifications
Detailed technical specifications for the GOHHDL Android 15 Car Radio.

Image: IPS Screen 1280 x 720. This image highlights the high-resolution IPS display of the car radio, emphasizing its clarity and vibrant colors.
| Brand | GOHHDL |
| Operating System | Android 15 |
| RAM | 4GB |
| ROM | 128GB |
| Screen Size | 9 Inches |
| Display Type | IPS Touch Screen (1280 x 720 resolution) |
| Connectivity Technology | AUX, Bluetooth, USB, Wi-Fi |
| Controller Type | Touch Screen + Smartphone App |
| Special Features | Apple CarPlay, Android Auto, GPS Navigation, FM/RDS, 32-Band EQ, Steering Wheel Control, Rear Camera Support |
| Compatible Devices | Smartphone, Tablet |
| Audio Output Mode | Stereo, Surround |
| Number of Channels | 32 (EQ) |
| Supported Internet Services | Carplay, Android Auto |
| Audio Output Type | Stereo, Surround, Bluetooth, RCA |
8. Warranty & Support
For warranty information, please refer to the documentation provided with your purchase or contact your retailer. GOHHDL is committed to providing quality products and customer service.
If you require technical assistance or have questions not covered in this manual, please contact GOHHDL customer support through the contact information provided on the product packaging or the official GOHHDL website.
