Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your FELLOSTAR Car Stereo Head Unit. This unit is specifically designed as a radio upgrade for 2017-2018 Mazda CX-5 vehicles, featuring an 8-Core processor, 2GB RAM, 32GB ROM, and a 9-inch touchscreen with integrated CarPlay and Android Auto functionality. Please read this manual thoroughly before use to ensure proper operation and to maximize your driving experience.

Image: The FELLOSTAR 9-inch car stereo head unit, ready for installation, showcasing its design and included mounting hardware.
Setup
1. Installation
The FELLOSTAR Car Stereo is designed for a plug-and-play installation in compatible Mazda CX-5 models (2017-2018). It replaces the factory radio while retaining original equipment manufacturer (OEM) functions such as steering wheel controls. Professional installation is recommended to ensure correct wiring and functionality.

Image: Comparison of the Mazda CX-5 dashboard before and after the installation of the FELLOSTAR 9-inch touchscreen car stereo, demonstrating the integrated appearance.
2. Initial Power On
- After installation, ensure all connections are secure.
- Turn on your vehicle's ignition. The head unit should power on automatically.
- Follow any on-screen prompts for initial setup, such as language selection and time zone.
- Connect to a Wi-Fi network or insert a 4G SIM card (if supported by your model) to enable online features and updates.
Operating Instructions
1. User Interface and Android System
The head unit operates on an Android system, providing a familiar and intuitive interface. It features an 8-core processor, 2GB RAM, and 32GB ROM for smooth performance. The 9-inch IPS touchscreen with 1280x720 resolution offers clear and vibrant visuals.

Image: Visual representation of the core features of the Android 13 system, highlighting the processor, display, and connectivity options.
2. CarPlay and Android Auto
Connect your iPhone or Android smartphone to access CarPlay or Android Auto. This allows for safe and convenient use of navigation, music, calls, and messaging directly on the car stereo's display. Both wireless and wired connections are supported.

Image: Demonstrates the integration of CarPlay and Android Auto, including voice control and phone connectivity for navigation, music, and calls.

Image: Shows the Carlink interface, emphasizing the ability to use maps, music, and phone functions from a connected smartphone on the head unit's screen, also demonstrating split-screen capability.
3. Bluetooth Connectivity
The unit supports Bluetooth for hands-free calling and audio streaming. Pair your smartphone to make and receive calls, sync contacts, and play music wirelessly.

Image: Depicts the Bluetooth functions, including phone dialing and music playback, for seamless integration with mobile devices.
4. GPS Navigation
A built-in GPS antenna provides reliable navigation. The system supports both online and offline navigation applications. Offline maps may require prior download.

Image: Illustrates the GPS navigation feature, displaying a map with route guidance and destination information.
5. FM/AM Radio
Access FM/AM radio stations. The unit supports RDS (Radio Data System) for station identification and traffic alerts where available.

Image: Displays the radio interface, allowing users to tune into FM/AM stations and manage presets, alongside a depiction of the steering wheel control learning function.
6. Steering Wheel Control
The head unit is designed to retain your vehicle's original steering wheel control functionality. This allows you to manage volume, change tracks, and answer calls without taking your hands off the wheel.
Refer to the unit's settings for learning or configuring steering wheel buttons if necessary.
7. Split Screen Functionality
Utilize the split-screen feature to run two applications simultaneously, such as navigation and music playback, enhancing multitasking capabilities.
(Refer to the image in section 2. CarPlay and Android Auto for a visual example of split-screen functionality.)
8. Digital Sound Processor (DSP)
The integrated DSP module allows for customizable audio settings, providing an enhanced and immersive sound experience. Adjust equalizer settings and sound profiles to suit your preferences.
Maintenance
- Screen Cleaning: Use a soft, lint-free cloth to gently wipe the touchscreen. Avoid abrasive cleaners or solvents.
- Software Updates: Periodically check for system software updates via the settings menu to ensure optimal performance and access to new features.
- General Care: Keep the unit free from dust and extreme temperatures.
Troubleshooting
- No Power:
- Check all power connections and vehicle fuses. Ensure the ignition is on.
- No Sound:
- Verify speaker connections. Check volume levels and audio output settings. Ensure the mute function is not active.
- GPS Signal Issues:
- Ensure the GPS antenna is properly installed and has a clear view of the sky. Update navigation software if necessary.
- Touchscreen Unresponsive:
- Restart the unit by turning off and on the vehicle's ignition. If the issue persists, perform a factory reset (refer to settings menu, note this will erase user data).
- CarPlay/Android Auto Not Connecting:
- Ensure your phone's operating system is up to date. Check USB cable connection (if wired). Verify Bluetooth pairing (if wireless). Restart both the head unit and your phone.
Specifications
| Brand | FELLOSTAR |
| Model | 8-Core 2+32G Head Unit |
| Compatible Vehicles | Mazda CX-5 (2017-2018) |
| Display Size | 9 Inches |
| Screen Resolution | 1280x720 (IPS) |
| Operating System | Android (Latest version as of manufacturing) |
| Processor | 8-Core |
| RAM | 2GB |
| ROM (Internal Storage) | 32GB |
| Connectivity | Bluetooth, Wi-Fi, 4G (Hotspot), GPS |
| Features | Wireless/Wired CarPlay, Android Auto, DSP, Split Screen, FM/AM Radio, Steering Wheel Control Support |
Warranty and Support
For warranty information and technical support, please refer to the documentation included with your purchase or contact FELLOSTAR customer service directly. Contact details can typically be found on the manufacturer's official website or through your point of purchase.
Online resources and FAQs may also be available to assist with common inquiries.