Roinvou Roinvou-A7290A3195A4MI2US31-CC251
Roinvou 9-Inch Android 13 Car Stereo User Manual
For Toyota Yaris Vios (2007-2012) - Model: Roinvou-A7290A3195A4MI2US31-CC251
Important Safety Information
Read all instructions carefully before installation and use. Improper installation or operation can lead to vehicle damage or personal injury. Always consult a professional for installation if you are unsure.
- Ensure the vehicle's power is disconnected before installation.
- Do not operate the device in a way that distracts you from driving.
- Keep the volume at a level that allows you to hear outside traffic sounds.
- Avoid exposing the unit to extreme temperatures or direct sunlight for prolonged periods.
Package Contents
Verify that all components are present before beginning installation.
- Roinvou Car Stereo for Toyota Yaris Vios
- Power Cable
- RCA Harness
- GPS Antenna
- AHD Backup Camera
- External Microphone
- Rear Camera Input Cable
- Dual USB Cable
- Installation Tool

Image: Overview of the Roinvou car stereo package contents.
Installation Guide
This section outlines the general steps for installing the Roinvou car stereo. Specific vehicle wiring may vary. Professional installation is recommended.
1. Pre-Installation Check
- Ensure your Toyota Yaris Vios is within the 2007-2012 model range.
- Verify that your vehicle does not have an original large screen or Bose sound system, as these are not supported.
- Disconnect the negative terminal of your car battery.

Image: Compatibility check for Toyota Yaris Vios dashboards (2007-2012).
2. Wiring Connections
Connect the provided cables to the corresponding ports on the car stereo and your vehicle's wiring harness. Refer to the wiring diagram for detailed connections.

Image: Detailed wiring diagram for the car stereo system.
- Power Cable: Connect to the vehicle's power supply.
- RCA Harness: For audio output and auxiliary input.
- GPS Antenna: Mount in a location with a clear view of the sky.
- AHD Backup Camera: Connect the camera to the rear camera input cable and power it from the reversing lamp.
- Dual USB Cable: For connecting USB devices and Android Auto/CarPlay (wired).
- External Microphone: For improved call quality.
3. Mounting the Unit
Carefully insert the car stereo into the dashboard opening. Secure it using the provided mounting brackets and screws. Ensure all cables are tucked away and not pinched.
Operating Instructions
1. Initial Power On and Setup
- Reconnect the car battery.
- Turn on the vehicle ignition. The stereo should power on automatically.
- Follow the on-screen prompts for initial setup, including language and time zone.
2. User Interface and Themes
The unit features an Android 13 operating system with a 9-inch IPS touch screen. You can customize the interface with 28 different desktop themes.

Image: Multiple user interface themes displayed on the car stereo screen.
Video: Demonstrates UI functions, Carplay, and Android Auto connection on the Roinvou car stereo.
3. Wireless Carplay & Android Auto
Connect your smartphone wirelessly or via USB for seamless integration with Apple CarPlay or Android Auto. This allows access to navigation, music, calls, and messages directly from the stereo screen.

Image: Wireless Carplay and Android Auto functionality.
- Wireless Connection: Enable Bluetooth and Wi-Fi on your phone and the stereo. Pair your phone with the stereo's Bluetooth. Follow on-screen prompts to activate CarPlay or Android Auto.
- Wired Connection: Connect your phone to the stereo using a USB cable. Ensure USB debugging is enabled for Android Auto if prompted.
- Note: Some Samsung phones may have restrictions with CarPlay/Android Auto.
4. GPS Navigation & WiFi
The unit includes a built-in GPS module. You can use pre-installed offline maps or connect to Wi-Fi/hotspot for online navigation apps like Waze and Google Maps. Access the Play Store to download additional applications.

Image: Online and offline GPS navigation capabilities.
5. Bluetooth & FM/RDS Radio
Pair your phone via Bluetooth for hands-free calling, music playback, and contact synchronization. The FM/RDS radio provides access to local stations with clear reception and real-time information.

Image: Bluetooth functionality for calls and music.

Image: FM/RDS radio interface.
6. Steering Wheel Control (SWC)
The unit supports steering wheel controls. The connection method depends on whether your vehicle has a CANBUS decoder.

Image: Steering Wheel Control setup screen.
- Without CANBUS Decoder: Connect the steering wheel control wires (Key1/Key2) in the power cable to the corresponding port. Use the "SteeringWheelKey" manual match function to assign button functions.
- With CANBUS Decoder: Connect the CANBUS before powering on. Navigate to Apps > Settings > Factory Settings (1234) > CAN Settings. Select the brand and model year of the CANBUS decoder to enable SWC.
7. Backup Camera
The included AHD backup camera provides a clear view when reversing. Ensure it is properly connected and powered by the reversing lamp.

Image: Backup camera display with reversing input.
Maintenance
- Screen Cleaning: Use a soft, lint-free cloth to clean the touch screen. Avoid abrasive cleaners.
- Software Updates: Periodically check for software updates through the system settings to ensure optimal performance and access to new features.
- General Care: Avoid spilling liquids on the unit. Do not attempt to disassemble the unit yourself.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | Incorrect wiring, blown fuse, loose connection. | Check power cable connections. Inspect vehicle fuses. Ensure battery is connected. |
| No sound. | Volume too low, incorrect audio settings, loose speaker wires. | Increase volume. Check audio output settings. Verify speaker wire connections. |
| Touch screen unresponsive. | Software glitch, temporary freeze. | Perform a soft reset (refer to device settings for reset option). If persistent, contact support. |
| CarPlay/Android Auto not connecting. | Incorrect phone settings, incompatible phone, faulty USB cable. | Ensure Bluetooth/Wi-Fi is on (wireless). Check USB debugging (Android). Try a different USB cable. Verify phone compatibility. |
| Backup camera not displaying. | Incorrect wiring, camera power issue. | Check camera input cable connection. Ensure camera is receiving power from the reversing lamp. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | Roinvou-A7290A3195A4MI2US31-CC251 |
| Operating System | Android 13 |
| RAM/ROM | 2GB RAM + 64GB ROM |
| Screen Size | 9 Inches |
| Screen Resolution | 1024 x 600 IPS Touch Screen |
| Connectivity | Bluetooth, USB, Wi-Fi |
| Special Features | CarPlay, Android Auto, GPS Navigation, DSP, SWC, FM/RDS Radio, Mirror Link, 28 Desktop Themes |
| Product Dimensions | 11.46 x 3.15 x 8.66 inches |
| Item Weight | 3.16 pounds |
Warranty and Support
Roinvou provides customer support for this product. For technical assistance, troubleshooting, or warranty inquiries, please contact Roinvou customer service.
- Warranty: The product typically comes with a one-year warranty. Please refer to your purchase documentation for specific warranty terms.
- Contact Support:
- Email: roinvouservices@163.com
- Via Amazon: Access the seller's store page on Amazon and click "Ask a question".

Image: Customer support contact information.