1. Introduction
This manual provides instructions for the Road Top 12.3-inch Wireless Car Touchscreen, designed to upgrade your Mercedes Benz infotainment system. It integrates wireless CarPlay, wireless Android Auto, and wireless Mirrorlink functionalities while retaining the original OEM system features. The touchscreen offers a 1920 x 720 HD resolution for enhanced visual clarity.
2. Compatibility
This touchscreen is compatible with Mercedes Benz A/C/V Class, GLA, and CLA models (W176, C117, X117, X156, W447) manufactured between 2015 and 2018, equipped with the NTG 5.0, 5.1, or 5.2 system.
- Mercedes Benz A/CLA/GLA Class: Utilize your vehicle's factory screen mount for installation.
- Mercedes Benz C/GLC/V Class: Use the provided Road Top mounting bracket for installation.
3. Product Features
- Linux System Touchscreen: Replaces the original car screen with a 12.3-inch Linux-based touchscreen. Note: This system does not support Google Play Store app downloads.
- High-Resolution Display: Features a 1920 x 720 HD resolution for clear visuals.
- Wireless CarPlay & Android Auto: Provides full-screen functionality for navigation, phone calls, music streaming (Spotify), Siri voice control, and video playback via wireless or wired connection. Compatible with iOS and Android devices.
- Wireless Mirrorlink: Allows mirroring of your smartphone screen to the car display.
- Camera Support: Supports original factory reversing camera and parking radar. Also compatible with aftermarket reversing cameras, 360-degree cameras, and front-view DVR cameras (CVBS input). The reversing camera activates automatically when reverse gear is engaged.
- Original Function Retention: Preserves all original vehicle functions, including car radio, amplifier, factory joystick control, and original reversing camera. No software modifications are made to the vehicle's control units.
- Automatic Light Sensitivity: Adjusts screen brightness between day and night modes based on the car's original headlights for optimal viewing comfort.
Image: The 12.3-inch touchscreen showing the CarPlay interface with various application icons, integrated into a car dashboard with circular air vents.
Image: The infotainment system demonstrating the ability to switch between the CarPlay interface and the original Mercedes Benz OEM system, highlighting various display and navigation options.
Image: A close-up of the car dashboard screen displaying the smartphone integration interface, including app icons and indicators for Bluetooth and AUX connections, positioned near the climate control vents.
Image: A smartphone screen illustrating a game interface with a 1920x720 resolution, surrounded by various social media and application icons, demonstrating the display capabilities.
Image: The car infotainment system displaying a rear camera view, alongside other vehicle interface options and camera perspectives.
4. Setup and Installation
The Road Top 12.3-inch touchscreen is designed for plug-and-play installation using the original car cables, eliminating the need for cutting or breaking wires. This ensures a non-destructive installation process.
4.1. Installation Considerations
- For Mercedes Benz A/CLA/GLA Class, use your factory screen mount.
- For Mercedes Benz C/GLC/V Class, use the mounting bracket provided with the product.
- Before final reassembly, confirm that all features are functioning correctly.
Image: A visual comparison of a car dashboard before and after installation, highlighting the replacement of a smaller original screen with the larger 12.3-inch touchscreen displaying the CarPlay interface.
Image: A detailed view of the rear of the 12.3-inch touchscreen, illustrating its various connection ports and mounting points for installation.
Image: The essential components included with the touchscreen: the power cable, the LVDS/USB cable, and the mounting bracket, all necessary for installation.
5. Operating Instructions
5.1. Language Setup
To change the system language, navigate through the settings menu as shown in the video below.
Video: Demonstrates how to access the system settings, navigate to 'System', then 'Language', and select the desired language from the available options on the touchscreen interface.
5.2. Connecting to Wireless CarPlay
Follow these steps to connect your iPhone to the touchscreen via wireless CarPlay:
- Ensure the 'CarPlay' option is enabled in the touchscreen's settings: Setup -> Smart Phone -> Smart Phone Setting.
- On your iPhone, turn on the Wi-Fi switch.
- On your iPhone, turn on the Bluetooth switch.
- Search for the screen's Bluetooth device (named 'CAR-BT-XXXX') on your iPhone and pair with it.
- Allow contact and favorites sync when prompted on your iPhone.
- Click 'Use CarPlay' on your iPhone to activate the CarPlay function.
Video: A step-by-step guide demonstrating how to enable CarPlay in the system settings, then connect an iPhone by turning on Wi-Fi and Bluetooth, pairing the device, and initiating CarPlay.
5.3. Connecting to Wireless AirPlay
To connect your iPhone for wireless AirPlay (screen mirroring), follow these instructions:
- Ensure the 'AirPlay' option is enabled in the touchscreen's settings: Setup -> Smart Phone -> Smart Phone Setting.
- On your iPhone, search for the screen's Wi-Fi network (named 'CAR-XXXX') and connect to it.
- If prompted for a password, enter '66668888'.
- From your iPhone's Control Center, select 'Screen Mirroring' and then choose 'AirPlay'.
Video: Illustrates the process of enabling AirPlay in the system settings, connecting an iPhone to the screen's Wi-Fi, entering the password if required, and then activating AirPlay from the iPhone's screen mirroring options.
5.4. Switching Between New and Original Systems
The touchscreen allows seamless switching between the new Linux-based system and your car's original OEM system.
- To return to the new system from the original system: Touch anywhere on the screen.
- To return to the original system from the new system: Click 'Original car interface' on the new system's home screen or hold the 'Menu' button on your car's iDrive controller for 3 seconds.
Video: Demonstrates how to switch between the new CarPlay interface and the original car's system using both touchscreen input and the physical iDrive controller button.
5.5. Day and Night Mode
The screen features automatic light sensitivity, adjusting between day and night modes based on your car's original headlights. This ensures optimal visibility and comfort in varying light conditions.
Image: A car dashboard screen displaying a navigation map, with a split view illustrating the automatic adjustment between normal (day) and night vision modes based on ambient light.
6. Troubleshooting
Most issues encountered with the Road Top touchscreen are often related to incorrect cable connections or configuration settings. Please review your installation and settings carefully.
- No Display/Intermittent Display: Check all cable connections to ensure they are secure and correctly seated. Verify power supply.
- No Audio/Poor Audio Quality: Ensure the audio connection (e.g., AUX) is properly configured and selected in both the new system and the original car system. Some users reported needing to change the sound connector from the original radio to the screen's connector for optimal audio.
- CarPlay/Android Auto Connection Issues: Double-check that Wi-Fi and Bluetooth are enabled on your smartphone and the correct Bluetooth device is paired. Ensure the CarPlay/Android Auto option is enabled in the touchscreen's Smart Phone settings.
- Original System Not Accessible: Ensure you are using the correct method to switch back (either the 'Original car interface' button on the new system or holding the iDrive 'Menu' button for 3 seconds).
- Screen Not Responding to Touch: Verify that the system is in the new Linux interface, as the original system does not support touch input on this screen.
7. Specifications
| Brand | Road Top |
| Model Name | RT-LN-NTG50-12-GLC |
| Product Model Number | RTLin-BCC512-de1 |
| Screen Size | 12.3 Inches |
| Resolution | 1920 x 720 |
| Operating System | Linux |
| Special Feature | Touchscreen |
| Connectivity Technology | Bluetooth |
| Compatible Devices | Smartphone |
| Control Method | Touch |
| Mounting Type | Dashboard Mount |
| Supported Navigation System | GPS |
| Dimensions | 39.5 x 18.4 x 17.3 cm; 1.3 kg |
8. What's in the Box
The product package includes:
- 12.3-inch Touchscreen Unit
Image: A diagram illustrating the front and back views of the 12.3-inch touchscreen, its homescreen interface, and the included accessories: a power cable, an LVDS/USB cable, and a mounting bracket.
9. Warranty and Support
Road Top provides technical support for its products. If you require assistance with installation or have any questions, please contact Road Top directly through the Amazon platform.
9.1. How to Contact Support
- On the Amazon product page, click on the 'Road Top' seller name (usually located near the 'Add to Cart' button).
- On the seller's page, click the 'Ask a question' button.
The Road Top team aims to respond promptly to all inquiries.
Image: An illustration of how to locate and click the 'Road Top Direct' seller link and the 'Ask a question' button on the Amazon product page to contact support.