1. Introduction
This instruction manual provides detailed guidance for the installation, operation, and maintenance of your LEXXSON Retrofit Kit Decoder. This device integrates Wireless CarPlay, Android Auto, and MirrorLink functionalities into your Audi A6 or Q7 vehicle equipped with the MMI 3G System and a 6.5-inch or 7-inch screen, manufactured between 2009 and 2015. It allows for seamless integration with your vehicle's original controls and display, enhancing your driving experience with modern connectivity features.
2. Setup
2.1. Compatibility Check
Ensure your vehicle is compatible with this retrofit kit. This product is specifically designed for Audi A6 and Q7 models from 2009-2015 with the MMI 3G System and a 6.5-inch or 7-inch screen. It is crucial to verify both your vehicle model and system version. If the system version is incompatible, the product cannot be used.


2.2. What's in the Box
The package includes the following components:
- LEXXSON Retrofit Decoder Unit
- Power Cable
- RCA/USB Cable
- Transfer Gateway Cable (for passenger seat)
- LVDS IN/OUT Cables
- WiFi Antenna
- User Manual

2.3. Installation
The installation process is designed to be fully integrated into the original vehicle system without modifying the vehicle's wiring. It is a plug-and-play setup. Professional installation is recommended if you are not familiar with car electronics.

3. Operating Instructions
3.1. Wireless CarPlay & Android Auto
The kit supports both wireless and wired CarPlay and Android Auto. After the initial connection, your device will automatically connect for convenience.


3.2. Dual System Control
The original car button allows you to seamlessly switch between the vehicle's original system and the CarPlay/Android Auto interface. All original vehicle functions are retained.

3.3. Navigation & Voice Control
Utilize real-time navigation apps like Waze and Google Maps. The system supports voice commands (e.g., "Hey Siri") and original steering wheel buttons for control, allowing for hands-free operation.



3.4. Parking Assistant Integration
The system is compatible with 360° HD camera systems (PAL/NTSC/CVBS) and features dynamic guide lines, original radar connection, and parking distance control. Please note that cameras are sold separately.
3.5. MirrorLink Functionality
The device supports MirrorLink, allowing you to mirror your smartphone's screen directly onto the car's display.
3.6. Operational Videos
Video 3.1: Demonstration of the system's features including navigation, music playback, touch screen functionality, steering wheel controls, voice commands, switching between original and new systems, Airplay, Autolink, and rear camera display in an Audi vehicle.
Video 3.2: Instructions on how to configure the language settings for CarPlay within the system.
Video 3.3: Guide on enabling and connecting the original Bluetooth function for CarPlay.
4. Maintenance
The system offers software update services to ensure it remains current with the latest features and improvements. Its efficient heat dissipation system ensures stable operation even at temperatures up to 70 °C.
5. Troubleshooting
If you encounter any issues, please refer to the detailed troubleshooting section in the full user manual (if available) or contact customer support. Ensure all connections are secure and that your smartphone's operating system is up to date.
6. Specifications
| Feature | Detail |
|---|---|
| Model Number | RM-AD3503Q |
| Dimensions | 27 x 17 x 11 cm |
| Weight | 1.3 kg |
| Material | Plastic |
| Connectivity Technology | Bluetooth, 2.4 GHz RF, 5.8 GHz RF |
| Compatible Standards | Bluetooth 5.0, IEEE 802.11b/g/n/ac, CarPlay, Android Auto, MirrorLink |
| Control Method | Touch, Voice |
| Audio Output Type | Bluetooth, RCA |
| Power Source | Electric Cable |
7. Warranty
This product comes with a 1-year warranty from the date of purchase. Please retain your proof of purchase for warranty claims. The warranty covers manufacturing defects and malfunctions under normal use conditions.
8. Support
For technical assistance, troubleshooting, or any inquiries regarding your LEXXSON Retrofit Kit Decoder, please refer to the contact information provided with your product packaging or visit the official LEXXSON website for customer support resources.





