User Manual: OEM Screen Upgrade Decoder Box

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the OEM Screen Upgrade Decoder Box. This retrofit kit adds Apple CarPlay and Android Auto functionality to your Audi A6 or Q7 (2009-2015) equipped with the MMI 3G platform and a 6.5" or 7" screen. The system integrates seamlessly, retaining the original display and MMI controls (rotary controller and steering wheel controls) for an OEM-like experience.

2. Product Features

• Dedicated CarPlay Video Interface for Audi A6/Q7 (2009-2015) with MMI 3G Platform (6.5"/7" Screen).
• Built-in 2.4G and 5.8G WiFi for stable wireless connection.
• Bluetooth 5.0 Technology for enhanced connectivity.
• Supports Apple CarPlay, Android Auto, Mirror Link, and USB Flash drive playback.
• Control via original steering wheel controls, MMI rotary knob, and touch control (if vehicle specification allows).
• Voice control functionality (e.g., "Hey Siri...").
• Integrated GPS navigation with support for popular apps like Google Maps, Waze, Apple Maps, NAVER Maps, and T Maps, including live traffic information.
• Built-in DSP (Digital Signal Processor) with fully adjustable Audio EQ for optimal sound quality.
• Two RCA inputs for connecting aftermarket rear and front cameras (PAL, NTSC, CVBS AHD).
• Supports HD 360 panoramic cameras and dynamic guidance lines for parking, retaining OEM parking style.
• Plug-and-play, non-destructive installation without cutting original wires.
• Seamless switching between CarPlay/Android Auto display and the original factory system using existing controls.

3. Compatibility

This decoder box is compatible with specific Audi A6 and Q7 models equipped with the MMI 3G platform and a 6.5-inch or 7-inch screen. Please verify your car's system before installation.

To confirm your MMI 3G system version, navigate to the "Setup" menu on your car's display and check the "Version information" or "Informazioni versione" section. Examples of compatible software versions include MMI 3G Low/Basic, MMI 3G High, and MMI 3G+.

4. Package Contents

Verify that all items listed below are included in your package:

• 1 x AUDI CarPlay Unit (Decoder Box)
• 1 x Power Harness
• 1 x RCA/USB Cable
• 1 x LVDS IN/OUT Cable
• 1 x WiFi Antenna
• 1 x Transfer Gateway from Passenger Seat Cables

5. Setup and Installation

Important: Installation should ideally be performed by a qualified professional. Disconnect the car's battery before beginning any electrical work. This kit is designed for non-destructive installation, utilizing existing connectors.

5.1. General Installation Steps

1. Ensure the vehicle's ignition is off and the battery is disconnected.
2. Carefully remove the necessary trim panels and the original MMI display unit to access the wiring.
3. Connect the provided cables to the decoder box and the corresponding ports in your vehicle, following the wiring diagram.
4. Secure the decoder box in a suitable location within the dashboard, ensuring it does not interfere with other components.
5. Reconnect the original MMI display and any other components that were removed.
6. Reconnect the car battery and test the system.
7. Reassemble all trim panels.

5.2. Wiring Diagram Overview

The following diagram illustrates the connections required for the decoder box. Pay close attention to each connection point.

• LVDS Connection: Connect the provided LVDS cable from the decoder box to the original display cable.
• Power & CAN Bus: Connect the CAN Power cable to the vehicle's CAN bus system. Ensure 12V OUT, Camera 12V, GND, and BACK (for reverse signal) wires are correctly connected to the original power cable and relevant vehicle systems.
• Video Inputs: Use the RCA connectors for Rear View CVBS and Front View CVBS if installing aftermarket cameras.
• Audio & USB: Connect the MIC IN for voice control and the USB port for media playback or wired CarPlay/Android Auto.
• AUX Connection: Connect the AUX cable. Note: If you experience noise, try unplugging the AUX cable to see if the noise disappears, then re-seat it firmly.
• Air Conditioning Cable: Connect the provided cable to the original air conditioning cable.

6. Operating Instructions

6.1. Switching Between Systems

To switch between the original Audi MMI system and the CarPlay/Android Auto interface, use your vehicle's factory controls. The specific button or sequence may vary slightly depending on your Audi model and MMI version, but it typically involves pressing and holding a specific button (e.g., NAV, MEDIA, or INFO) or using the MMI rotary controller.

6.2. Connecting to CarPlay / Android Auto

The decoder box supports both wired and wireless connections for Apple CarPlay and Android Auto.

• Wireless Connection:
  1. Ensure Bluetooth is enabled on your smartphone.
  2. On the car's display, select the CarPlay or Android Auto interface.
  3. Follow the on-screen prompts to pair your phone via Bluetooth. Once paired, the system will automatically connect wirelessly for future use.
• Wired Connection:
  1. Connect your smartphone to the provided USB port using a high-quality USB cable.
  2. The system should automatically detect your phone and launch CarPlay or Android Auto.

6.3. Using CarPlay / Android Auto Features

• Navigation: Access your preferred navigation apps (Google Maps, Waze, Apple Maps, etc.) for real-time traffic and turn-by-turn directions.
• Voice Control: Activate Siri (for CarPlay) or Google Assistant (for Android Auto) by saying "Hey Siri" or "Hey Google" (or pressing the voice command button on your steering wheel) to make calls, send messages, get directions, and control music.



• Music Playback: Stream music from your phone's apps or play media from a USB flash drive connected to the decoder box.



• Mirror Link: Stream content from your smartphone directly to the car's display.



• Camera Support: If connected, the system supports factory original reverse cameras, parking radar, and aftermarket reverse/360 cameras with dynamic guidance lines.

6.4. Controls

The system integrates with your car's existing controls:

• Touch Screen: If your Audi has a touch-enabled screen, you can interact directly with the CarPlay/Android Auto interface.
• Steering Wheel Controls: Use the buttons on your steering wheel to control audio, calls, and navigation.
• MMI Knob Control: The original MMI rotary controller can be used to navigate menus and select options within the new interface.

7. Maintenance

To ensure the longevity and optimal performance of your decoder box:

• Keep the unit and surrounding areas clean and free from dust. Use a soft, dry cloth for cleaning.
• Avoid exposing the unit to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
• Ensure all cable connections remain secure. Periodically check for any loose connections.
• Do not attempt to open the decoder box or perform unauthorized repairs, as this may void any warranty.

8. Troubleshooting

If you encounter issues with your decoder box, refer to the following common problems and solutions:

If these steps do not resolve the issue, please contact customer support for further assistance.

9. Specifications

10. User Tips

• For the best wireless performance, ensure your phone is updated to the latest operating system.
• Use high-quality USB cables for wired connections to avoid connectivity issues.
• Familiarize yourself with your car's original MMI controls before installation, as they will be used to switch between systems.
• When using navigation apps, ensure your phone has a strong GPS signal for accurate positioning.

11. Warranty and Support

For any warranty claims, technical support, or further inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.