1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the iManAuto Wireless Carplay Retrofit Kit Decoder. This device enhances your Mercedes Benz infotainment system by adding Wireless/Wired Apple CarPlay, Android Auto, and other multimedia functionalities.
1.1 Safety Information
Please read all instructions carefully before installation and operation. Improper installation may cause damage to the device or your vehicle. Ensure the vehicle's ignition is off and the battery is disconnected before beginning installation. Professional installation is recommended.
2. Product Overview and Features
The iManAuto Wireless Carplay Retrofit Kit Decoder integrates seamlessly with your Mercedes Benz NTG4.5 or NTG5.0 system, providing modern smartphone connectivity and entertainment options.
2.1 Key Features
- Wireless/Wired Apple CarPlay
- Wireless/Wired Android Auto
- Youtube functionality for video playback
- Support for factory original and aftermarket reverse cameras, parking radar, and 360 cameras
- Support for front view camera DVR (CVBS input)
- Mirror Link (Wireless Airplay for iPhone, Wired Autolink for Android)
- Utilizes original car knob and steering wheel controls for seamless interaction
2.2 Compatibility
This kit is compatible with the following Mercedes Benz models and NTG systems:
| NTG System | Compatible Models | Years |
|---|---|---|
| NTG4.5 | A / B / C / E / GLK / GLA / ML / SLK Class | 2012-2014 |
| NTG5.0 | A / B / C / S / GLK / GLA / ML / SLK / GLC Class | 2015-2018 |
For specific model compatibility, please refer to the DIP switch settings in the installation section.
2.3 Product Components
The kit typically includes the following components:
- CarPlay Retrofit Decoder Box
- Main Wiring Harness
- LVDS Cable
- USB Cable
- Bluetooth Antenna
- WiFi Antenna
- Auxiliary Audio Cable (3.5mm)
- Camera Input Cables
3. Installation Guide
Before starting the installation, ensure your vehicle's ignition is off and the battery is disconnected. Refer to your vehicle's service manual for specific panel removal instructions.
3.1 DIP Switch Settings
The DIP switches on the decoder box must be configured correctly for your specific Mercedes Benz model and screen size. Refer to the table below for common settings. If the installation is abnormal, you may need to adjust these settings.
| Model | Screen Size | System | DIP Setting |
|---|---|---|---|
| S | 12.3" | NTG5.0 | 6,8 ON |
| X/V/C/GLC | 8.4" (960*575) | NTG5.0 | 5,6,8 ON |
| C/GLC/GLS/E | 7/8.4" (800*480) | NTG5.0 | 8 ON |
| C | 6.3" | NTG5.0 | 5,8 ON |
| A/B/CLA/GLA/GLE/E/S | 12.3" | NTG4.7 | 4,6,8 ON |
| 8.4" (960*575) | NTG4.7 | 4,5,6,8 ON | |
| 7/8.4" (800*480) | NTG4.7 | 3,4,6,8 ON | |
| 6.3" | NTG4.7 | 3,4,5,6,8 ON | |
| GLB/CLA/CLS | 12.3" | NTG4.8 | 3,4,8 ON |
| 8.4" (960*575) | NTG4.8 | 3,4,5,8 ON | |
| 7/8.4" (800*480) | NTG4.8 | 3,4,5,8 ON | |
| 6.3" | NTG4.8 | 3,4,5,8 ON |
Note: The DIP switches of the preceding models are for reference. If the installation is abnormal, you can replace the DIP switches of the other two systems.
3.2 Connection Schematic Diagram (USB Audio Solution)
Follow the diagram and instructions below for proper wiring. This diagram illustrates the connections for the NTG5.0 system using a USB audio solution.
- **Power Supply**:
- Connect the CarPlay power cable to the OEM CD host.
- Remove the optical fiber from the original car power cable and connect it to the CarPlay power cable.
- Connect power supply for reverse camera, front camera/DVR, 12V input reverse detect, 12V Reverse Camera out, 12V ACC out, Back/Reverse Detect, Front camera video input, Reverse camera video input.
- **LVDS Connection**:
- Connect the CarPlay LVDS cable to the OEM CD host.
- Transfer the LVDS cable removed from the OEM CD host to the CarPlay unit.
- **USB Port**: Connect USB flash drives or mobile phones.
- **Audio Connection**: Connect the 3.5mm AUX cable (USB sound card) to the glove box. Ensure Audio GND and GND are connected if there is no sound.
- **Antennas**: Connect the Bluetooth antenna and WiFi antenna. Keep the WiFi antenna away from metal objects.
For a more detailed visual guide, you can refer to the official user manual PDF: User Manual (PDF).
4. Operating Instructions
Once installed, the retrofit kit allows you to access CarPlay, Android Auto, and other features through your car's display and controls.
4.1 Switching to CarPlay/Android Auto Interface
Typically, you can switch to the CarPlay/Android Auto interface by pressing and holding a specific button on your car's console or steering wheel (e.g., the "Return" button or a dedicated voice control button for 3 seconds).
4.2 CarPlay and Android Auto Functions
- **Wireless/Wired iOS CarPlay**: Connect your iPhone wirelessly or via USB. Access navigation (Apple Maps, Google Maps, Waze), make calls, send messages, and play music.
Figure 5: CarPlay Navigation 
Figure 6: CarPlay Phone Calls 
Figure 7: CarPlay Messages 
Figure 8: CarPlay Music - **Wireless/Wired Android Auto**: Connect your Android phone wirelessly or via USB. Access navigation, communication, and media apps optimized for driving.
- **Siri Voice Control**: To activate Siri, press and hold the voice control button on the steering wheel or long-press the car knob.
4.3 Multimedia Playback (Youtube)
The kit supports Youtube playback, allowing passengers to watch videos. Ensure the vehicle is stationary for safety when viewing videos.
4.4 Camera Functions
The system supports various camera inputs:
- **Original Reverse Camera**: Automatically displays when shifting into reverse.
- **Aftermarket Reverse Camera**: Connect to the designated input for aftermarket cameras.
- **360 Camera**: If installed, connect to the appropriate input.
- **Front View Camera/DVR**: Connect to the CVBS input for front camera or DVR functionality.
4.5 Control Methods
The system integrates with your vehicle's existing controls:
- **Original Car Knob**: Use the central control knob to navigate menus and select options.
- **Steering Wheel Controls**:
- Voice Control Button: Supported for activating Siri/Google Assistant.
- Tel Button: Supported for answering/ending calls.
- Voice "+" and "-" Buttons: Supported for volume control.
- Other steering wheel buttons may not be supported.
4.6 Mirror Link
- **Wireless Airplay (iPhone)**: Mirror your iPhone screen wirelessly to the car display.
- **Wired Autolink (Android)**: Mirror your Android phone screen via a wired connection.
- This feature allows viewing YouTube, navigation, and other HD videos directly from your phone.
5. Maintenance
The iManAuto Wireless Carplay Retrofit Kit Decoder is designed for durability and minimal maintenance. To ensure optimal performance and longevity:
- Keep the decoder box and connections free from dust and moisture.
- Avoid exposing the unit to extreme temperatures.
- Do not attempt to open or modify the decoder box, as this will void the warranty.
- Regularly check all cable connections to ensure they are secure.
6. Troubleshooting
If you encounter issues with your CarPlay Retrofit Kit, refer to the following common problems and solutions:
- **No Sound**:
- Ensure the 3.5mm AUX cable is securely connected.
- Verify that the Audio GND and GND connections are properly made (as per the wiring diagram).
- Check your car's audio input settings to ensure AUX is selected.
- **CarPlay/Android Auto Not Activating**:
- Confirm that the DIP switch settings match your vehicle's model and screen size.
- Ensure your phone is properly connected (wirelessly or via USB).
- Try restarting your phone and the car's infotainment system.
- If using wireless connection, ensure Bluetooth and Wi-Fi are enabled on your phone and connected to the decoder box.
- A user reported "Carplay is not working". This could be due to incorrect DIP switch settings or connection issues. Double-check all wiring and DIP switch configurations.
- **Display Issues (e.g., blank screen, distorted image)**:
- Check the LVDS cable connection for proper seating.
- Verify the DIP switch settings for screen resolution.
- **Controls Not Responding**:
- Ensure all control wiring is correctly connected.
- Confirm that the specific steering wheel buttons you are using are supported by the decoder box (voice control, Tel, volume +/-).
- **Software Issues / New Features**:
- If your software doesn't support a new feature (e.g., Youtube), contact the seller for a new update file.
If the problem persists, consult the full user manual PDF or contact customer support.
7. Specifications
| Feature | Specification |
|---|---|
| Brand Name | iManAuto |
| Din | One Din |
| Interface | USB |
| Voltage | 12 V |
| Item Weight | 1.5kg |
| Output Type | Colored |
| ROM | 2 G |
| Digital Media Format | VIDEO CD, MP4, WMA |
| Display Size | 2.5" (Note: This likely refers to a small internal display or a generic spec, as the product integrates with larger car screens.) |
| Origin | Mainland China |
| Certification | CE |
| Functions Supported | Wireless/Wired Apple Carplay, Android Auto/Mirror, USB Flash Play, Reverse/Front/360 Camera, Waze, Spotify, Google Maps, Youtube, Airplay, iOS Mirroring, Android Mirroring |
8. User Tips
- **Software Updates**: If you notice new features advertised or experience issues, check with the seller for the latest software update files. Keeping your software updated can resolve bugs and add new functionalities.
- **Audio Quality**: If you experience poor audio quality, ensure all audio connections, especially the Audio GND, are secure and free from interference.
- **Wireless Connectivity**: For stable wireless CarPlay/Android Auto, ensure your phone's Bluetooth and Wi-Fi are strong and not interfered with by other devices. Keep the WiFi antenna clear of metal obstructions.
- **DIP Switch Accuracy**: Always double-check the DIP switch settings against your specific car model and screen size before finalizing installation to avoid compatibility issues.
9. Warranty and Support
For warranty information, technical support, or further assistance, please contact the iManAuto Store directly through your purchase platform. Keep your purchase records handy when seeking support.