STWEI T3 7-inch Car Multimedia System User Manual

1. Product Overview

The STWEI T3 is a 7-inch Android 13/14 car multimedia system designed for Mercedes Benz E Class W207 and A207 models. It features a powerful Qualcomm Snapdragon 680/6225 8-core processor, offering seamless integration with your vehicle's existing systems while providing advanced multimedia and navigation capabilities.

Key Features:

• Operating System: Android 13 / Android 14
• Processor: Qualcomm Snapdragon 680 / 6225, 8-core, up to 2.4GHz
• Display: 7-inch HD Touch Screen (1920x720 resolution)
• Memory: Up to 8GB RAM, 256GB ROM (configurations vary)
• Connectivity: Wireless CarPlay, Wireless Android Auto, Bluetooth 5.1, 4G+WIFI network
• Audio: Built-in DSP Processor for various sound effects
• Navigation: Supports Google Maps, iGo Maps, Waze, and other navigation apps
• Multimedia: HD Video Playback, online music, online movies, local media playback
• Integration: Supports original car functions including steering wheel control, original CD, and media knob.
• Reversing System: Supports high-definition reverse camera.

2. Package Contents

Please verify that all items are included in your package:

• Screen Unit
• Base Unit
• Power Cable
• USB + LVDS Cable
• LVDS Cable
• Converter Box
• GPS Antenna
• 4G Antenna
• AMI Cable
• MIC (Microphone)
• Screws for installation

Note: A reversing camera may be included as a gift. Please confirm with the seller if your original car does not have a reversing image system.

3. Installation and Setup

Professional installation is highly recommended. Ensure the vehicle's power is off before beginning installation.

3.1. Identifying Your Original Mercedes Benz System

It is crucial to identify your car's original NTG system (NTG4.0, NTG4.5, or NTG5.0) to ensure compatibility and correct installation. Refer to the image below for guidance:

3.2. Installation Steps (E-Class)

The following steps outline the general installation process for the E-Class. Always consult the detailed installation instructions provided in the package or the PDF manual for your specific model.

1. Central Control Effect: Observe the central control effect of the original vehicle.
2. Pry out Original Screen Frame: Carefully pry out the original screen frame.
3. Remove Fixing Screws: Remove the fixing screws of the original display screen.
4. Pry off Fixing Clips (Air Vent Panel): Pry off the fixing clips of the central control air vent panel.
5. Pry off Fixing Clips (Air Vent Panel): Continue prying off the fixing clips of the central control air vent panel.
6. Lift Hook (Air Vent): Use a small flat screwdriver to lift the hook inside the air vent toward the middle.
7. Lift Hook (Air Vent): Repeat lifting the hook inside the air vent toward the middle.
8. Pry Central Control Air Vent Panel: Carefully pry the central control air vent panel of the original vehicle.
9. Pry Central Control Air Vent Panel: Continue prying the central control air vent panel of the original vehicle.
10. Twist out CD Fixing Screws: Twist out the CD fixing screws of the original vehicle a little, then push down to remove the CD host.
11. Twist out CD Fixing Screws: Repeat twisting out the CD fixing screws of the original vehicle a little, then push down to remove the CD host.
12. Connect Video Screen Switch Box: Connect the video screen switch box to the original vehicle screen cable. Connect the red power cable to the host output power.
13. Install Special Face Frame: Install the provided special face frame and fix the fixing screws.
14. Fasten Special Panel: Fasten the special panel.
15. Application Interface: Verify the application interface of the effect picture after loading.

For detailed wiring diagrams and specific instructions, please refer to the user manual PDF: User manual (PDF)

4. Operating Instructions

The STWEI T3 system offers a user-friendly interface with various functions. Navigate through the menus using the touch screen.

Video: Product demonstration showing Bluetooth, Navigation, Music, Video, Settings, Instrument, DSP, Carplay, and Split Screen functions.

4.1. Wireless CarPlay & Android Auto

The system supports wireless Apple CarPlay and Android Auto for seamless mobile phone integration. Connect your iOS or Android device wirelessly to access navigation, music, calls, and other apps directly on the car's screen.

4.2. Navigation

Utilize popular navigation applications like Google Maps, iGo Maps, and Waze directly on the 7-inch display for accurate and real-time directions.

4.3. Bluetooth 5.1

Connect your smartphone via Bluetooth 5.1 for clear audio streaming, hands-free calling, address book access, and recent call history. The advanced Bluetooth ensures excellent sound quality even at high speeds.

4.4. Split Screen Display

Enhance multitasking with the split-screen function, allowing you to run two applications simultaneously, such as navigation and video playback, for more convenient operation.

4.5. HD Video Playback

Enjoy HD digital video playback compatible with various video formats. Stream online movies, listen to online music, or play local media files to make your driving experience more enjoyable.

4.6. Built-in DSP Processor

The integrated Digital Sound Processor (DSP) offers various scene mode sound effects, including pop, rock, jazz, classic, and theater music, allowing you to customize your audio experience.

4.7. Original Car Function Support

The system fully supports your original Mercedes Benz car functions, including steering wheel controls, the original CD player, media knob, and original audio system. The new system operates without affecting the original car's functionalities.

4.8. Reversing System

The unit supports high-definition reverse cameras. If your original car has a reversing image system, the new unit will integrate with it. If not, a compatible reversing camera may be provided as a gift (please confirm with the seller).

5. Maintenance

To ensure the longevity and optimal performance of your STWEI T3 multimedia system, follow these general maintenance guidelines:

• Cleaning: Use a soft, dry cloth to clean the screen and exterior. Avoid abrasive cleaners or solvents that could damage the display or finish.
• Software Updates: Periodically check for and install software updates to ensure the system runs efficiently and securely.
• Temperature: Avoid exposing the unit to extreme temperatures, both hot and cold, for extended periods.
• Power: Ensure the vehicle's electrical system is stable. Avoid frequent power fluctuations.

6. Troubleshooting

If you encounter issues with your STWEI T3 multimedia system, refer to the following common problems and solutions:

• No Power: Check all power connections to ensure they are securely fastened. Verify the vehicle's fuse box for any blown fuses related to the multimedia system.
• No Sound: Check the volume settings on the unit and your car's original audio system. Ensure all audio cables are correctly connected. Verify DSP settings are not muting audio.
• Touch Screen Unresponsive: Try restarting the unit. If the issue persists, ensure the screen is clean and free from debris.
• CarPlay/Android Auto Not Connecting: Ensure Bluetooth and Wi-Fi are enabled on both the unit and your smartphone. Try forgetting the device on both ends and re-pairing.
• Navigation Issues: Ensure GPS antenna is properly installed and has a clear view of the sky. Check that navigation apps are updated and have necessary permissions.
• Reversing Camera Not Displaying: Verify the camera connection to the unit. If using an aftermarket camera, ensure it is compatible and correctly wired.
• System Lag/Slow Performance: Close unnecessary background applications. Clear cache or perform a factory reset if persistent (note: this will erase user data).

For more complex issues, please contact customer support.

7. Specifications

8. User Tips

• App Installation: The Android system allows you to download and install various applications online, such as YouTube or additional map services.
• Left/Right Hand Drive: The product supports both left-handed and right-handed driving configurations. Please inform the seller of your specific vehicle configuration before purchasing to ensure the correct unit is provided.
• Original Car Controls: The system is designed to retain all original car controls, including steering wheel buttons and the media scroll knob.
• Integrated CarPlay: The CarPlay module is integrated directly into the screen unit, requiring no additional external equipment.

9. Warranty and Support

9.1. Warranty Terms

All STWEI products come with a 1-year warranty, effective from the shipping date. This includes one year of post-paid maintenance covering material and labor costs.

This warranty does not cover damages resulting from accidents, artificial damage, unauthorized attempts to modify the product, or the use of third-party accessories. Consequential damages are also not covered.

9.2. Technical Support

STWEI offers technical support to its customers after sales, including video-based quick technical guidance. For any questions or issues, please contact customer support.

Contact Information:

• WhatsApp: +86 189 0299 0594
• WeChat: +86 13713887814