1. Introduction
This manual provides detailed instructions for the installation, operation, maintenance, and troubleshooting of your MekedeTech Android Car Radio Stereo. Please read this manual thoroughly before using the product to ensure proper functionality and to maximize your user experience. This device is designed to upgrade the in-car entertainment system for Mercedes Benz Smart 453 Fortwo models from 2015 to 2020.
2. Product Overview
The MekedeTech Android Car Radio Stereo is an advanced head unit featuring a 9-inch IPS touch screen with a resolution of 1280x720. It operates on Android 12 OS, powered by an 8-Core A53 1.8GHz CPU, with 6GB RAM and 128GB ROM. Key features include built-in wireless CarPlay and wired Android Auto, 4G LTE connectivity, Wi-Fi, Bluetooth 5.0, GPS navigation, and a DSP sound system for enhanced audio quality. The unit is designed for a seamless plug-and-play installation, retaining original steering wheel control functions.
3. Package Contents
Verify that all items listed below are included in your package:
- MekedeTech Android Car Radio Stereo Head Unit
- Dash kit (specific for Mercedes Benz Smart 453 Fortwo)
- Power cable
- RCA cable
- Reversing camera cable
- USB cables
- User Manual (this document)
4. Specifications
| Feature | Detail |
|---|---|
| Model | 8-Core 6+128G |
| Operating System | Android 12 OS |
| CPU | 8-Core A53 1.8GHz |
| Memory | 6GB RAM, 128GB ROM |
| Display Size | 9 Inches |
| Display Resolution | 1280x720 IPS Touch Screen |
| Power Output | 4*50W |
| Connectivity | 4G LTE, Wi-Fi, Bluetooth 5.0 |
| Special Features | Wireless CarPlay, Wired Android Auto, GPS Navigation, DSP Sound System |
| Vehicle Service Type | Car (Mercedes Benz Smart 453 Fortwo 2015-2020) |
| Audio Formats | APE/FLAC/WAV/MP3/WMA etc. |
| Video Formats | MKV/RMVB/AVI/MP4/MDV etc. |
| Picture Formats | PNG/JPEG/JPG/GIF/WBMP/BNP etc. |
5. Setup and Installation
This Android car radio is designed for a plug-and-play installation in Mercedes Benz Smart 453 Fortwo models from 2015 to 2020. All necessary accessories, including the dash kit and wiring, are provided for a straightforward setup. It is recommended to have the installation performed by a qualified professional if you are unfamiliar with car audio system installations.
5.1 Compatibility Check
Before proceeding with installation, ensure your vehicle's dashboard configuration matches the compatible models. Refer to the image below to confirm compatibility.
Figure 5.1: Installation compatibility and before/after views. The top left image shows a dashboard configuration that is not compatible, while the top right shows a compatible configuration. The bottom left shows the dashboard before installation of the new head unit, and the bottom right shows it after installation.
5.2 Basic Installation Steps
- Preparation: Disconnect the vehicle's battery to prevent electrical shorts.
- Remove Original Unit: Carefully remove the existing car radio and dashboard trim.
- Connect Wiring: Connect the provided power cable, RCA cable, reversing camera cable, and USB cables to the new head unit and the vehicle's harness. Ensure all connections are secure.
- Install Dash Kit: Mount the new head unit into the provided dash kit.
- Secure Head Unit: Insert the assembled head unit into the dashboard opening and secure it.
- Reconnect Battery: Reconnect the vehicle's battery and test the unit.
The unit is designed to retain all original steering wheel control functions, allowing you to easily switch songs, channels, and adjust volume without removing your hands from the steering wheel.
Figure 5.2: Visual guide for initial setup steps, including connecting the main power cable and navigating through system settings to configure Wi-Fi, display, GPS, and other features. It also illustrates the activation of the cooling fan.
6. Operating Instructions
Your MekedeTech Android Car Radio Stereo offers a wide range of functions. This section covers the basic operation of its key features.
6.1 Touch Screen Navigation
The 9-inch IPS touch screen provides intuitive control. Tap icons to open applications, swipe to navigate between screens, and use pinch-to-zoom gestures where applicable. The Android 12 OS interface is similar to a smartphone or tablet.
6.2 Wireless CarPlay and Android Auto
The unit supports both wireless CarPlay (for iOS devices) and wired Android Auto (for Android devices), allowing seamless integration of your smartphone for navigation, music, calls, and messages.
Figure 6.1: Instructions for connecting to Wireless CarPlay (iOS) and Wireless Android Auto (Android). Both systems require connecting via Bluetooth first, then using the 'Car Link' application. Android Auto also supports a wired USB connection.
6.2.1 Wireless CarPlay (iOS System)
- Connect Bluetooth: On your iPhone, go to Bluetooth settings and pair with the car stereo's Bluetooth.
- Open Car Link: On the car stereo, open the "Car Link" application.
- Wait for Connection: The system will automatically connect to CarPlay. (CarPlay can also be connected via USB Cable if preferred).
6.2.2 Wireless Android Auto (Android System)
- Connect Bluetooth: On your Android phone, go to Bluetooth settings and pair with the car stereo's Bluetooth.
- Open Car Link: On the car stereo, open the "Car Link" application.
- Wait for Connection: The system will automatically connect to Android Auto. (Android Auto can also be connected via USB Cable if preferred).
6.3 GPS Navigation
The unit comes with built-in GPS navigation. Access the navigation application from the main menu. Ensure a stable GPS signal for accurate positioning and routing. Maps can be updated via Wi-Fi or 4G LTE connection.
6.4 Audio and Video Playback
Play various audio and video formats from USB drives, internal storage, or streaming services via internet connection. The built-in DSP sound system provides multi-dimensional surround lossless sound effects for a high-quality audio experience.
Figure 6.2: Illustration of the built-in 4G LTE and Wi-Fi capabilities, including the SIM card slot location. Also highlights the DSP processor for enhanced audio quality.
7. Connectivity
The MekedeTech head unit offers robust connectivity options to keep you connected on the go.
7.1 4G LTE
Insert a 4G SIM card into the designated slot to access the internet anytime, anywhere, without relying on a mobile hotspot. The machine includes two SIM card slots: one on the back of the main unit and one on the RCA cable.
7.2 Wi-Fi
Connect to available Wi-Fi networks or use your smartphone's hotspot to access online features, download apps, and update maps.
7.3 Bluetooth 5.0
Bluetooth 5.0 provides stable and high-quality connections for hands-free calling and audio streaming from your mobile devices.
8. Maintenance
Proper maintenance ensures the longevity and optimal performance of your car stereo.
- Screen Cleaning: Use a soft, lint-free cloth specifically designed for electronics to clean the touch screen. Do not use harsh chemicals or abrasive materials.
- Software Updates: Periodically check for system software updates via the settings menu to ensure you have the latest features and security patches.
- Temperature Control: Avoid exposing the unit to extreme temperatures. The built-in cooling fan helps manage internal temperatures during prolonged use.
- General Care: Keep the unit free from dust and debris. Ensure all cables are securely connected.
9. Troubleshooting
This section addresses common issues you might encounter. For problems not listed here, please contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit does not power on. | Loose power connection, blown fuse, vehicle battery issue. | Check all power cables and connections. Inspect vehicle fuses. Ensure vehicle battery is charged. |
| No sound output. | Incorrect audio settings, loose speaker wires, amplifier issue. | Verify audio settings in the system menu. Check speaker wire connections. Ensure external amplifier (if used) is powered and connected correctly. |
| GPS signal is weak or inaccurate. | Antenna obstruction, poor satellite reception. | Ensure the GPS antenna is properly installed and has a clear view of the sky. Move to an open area. |
| CarPlay/Android Auto not connecting. | Bluetooth not paired, "Car Link" app not open, phone settings. | Ensure Bluetooth is enabled and paired on both devices. Open the "Car Link" app on the head unit. Check phone settings for CarPlay/Android Auto permissions. Try a different USB cable for wired connection. |
| Unit becomes hot during operation. | Prolonged use, high ambient temperature. | The unit has a built-in cooling fan to manage temperature. Ensure the fan is active (check settings as shown in Figure 5.2). If overheating persists, reduce usage or ensure proper ventilation around the unit. |
| 4G LTE not working. | SIM card not inserted correctly, no signal, incorrect APN settings. | Ensure the 4G SIM card is correctly inserted into one of the slots. Check for network signal strength. Verify APN settings in the system menu. |
10. Warranty and Support
10.1 Warranty Information
This MekedeTech Android Car Radio Stereo comes with a 1-Year Warranty from the date of purchase. This warranty covers manufacturing defects and malfunctions under normal use. It does not cover damage caused by improper installation, misuse, accidents, unauthorized modifications, or natural disasters. Please retain your proof of purchase for warranty claims.
10.2 Customer Support
For technical assistance, warranty claims, or any questions regarding your product, please contact MekedeTech customer support through the retailer where you purchased the product or visit the official MekedeTech website for contact information. When contacting support, please have your product model number (8-Core 6+128G) and proof of purchase readily available.