1. Introduction
Thank you for choosing the GISAEV Car Bluetooth Wireless Module. This device allows you to stream audio wirelessly from your Bluetooth-enabled smartphone, tablet, or MP3 player directly to your Mercedes-Benz car stereo system via the MMI (Media Interface) socket. Enjoy high-quality audio playback without the need for physical connections.
2. Safety Information
- Ensure the car's ignition is off before installation to prevent electrical damage.
- Do not expose the module to water or excessive moisture.
- Avoid extreme temperatures.
- Handle with care to prevent physical damage.
- If you are unsure about the installation process, consult a professional.
3. Package Contents
- 1 x GISAEV Car Bluetooth Wireless Module with MMI Cable
4. Specifications
| Feature | Specification |
|---|---|
| Brand Name | GISAEV |
| Model Name | MMI port |
| Item Type | Cables, Adapters & Sockets |
| Special Features | Bluetooth Music Wireless Receiver Aux For Benz |
| Bluetooth Version | 5.0 (also supports 3.0 / 2.0) |
| Bluetooth Name | JieRui-BT 5908 |
| Voltage Input | 4.5V - 14.6V DC |
| Operational Current | 600mA |
| Standby Current | 20mA |
| Out Power | 12V |
| Operating Temperature | -35°C to +75°C |
| DAC Resolution | 20bit |
| Total Harmonic Distortion | 0.05% |
| SN Ratio | 90dB |
| Frequency Response | 20HZ-20KHZ |
| Material | Plastic + Metal |
| Item Weight | 80g |
| Item Size | 20cm (cable length) |
| Origin | Mainland China |
Image: Internal circuit board of the Bluetooth module with detailed specifications.
Image: Overview of the GISAEV Bluetooth module with MMI connector and a phone displaying Bluetooth settings.
5. Setup Instructions
5.1. Locate the MMI Port
The Media Interface (MMI) port is typically located in your Mercedes-Benz glove box or under the armrest. Please ensure your car has an MMI socket. This module is compatible with Mercedes-Benz models from 2009 and up, including GLK, E, S, ML, and GL series.
Image: Examples of MMI port locations in Mercedes-Benz vehicles (glove box, armrest) and a close-up of the MMI port.
5.2. Connect the Module
- With the car's ignition off, insert the MMI connector of the Bluetooth module into your car's MMI socket.
- Connect the red wire to a 12V+ power source (e.g., car radio power).
- Connect the black wire to a ground point (e.g., car chassis). The module includes a fuse protection device and a non-destructive grounding ring terminal for safe installation.
Image: Side view of the GISAEV Bluetooth module and MMI connector.
5.3. Bluetooth Pairing
- Turn on your car's ignition and stereo system.
- On your car's radio, select 'AUX' as the audio input source.
- Enable Bluetooth on your smartphone or other audio device.
- Search for available Bluetooth devices. You should find a device named JieRui-BT 5908.
- Select JieRui-BT 5908 to pair with the module. No password should be required.
- Once paired, your device will be connected to the car's audio system.
6. Operating Instructions
After successful pairing, you can now play music from your phone, tablet, or MP3 player through your car's speakers. Simply start playing audio on your device, and the sound will be transmitted wirelessly to your car stereo. Adjust the volume using your car's audio controls or your connected device.
7. Maintenance
- Keep the module dry and away from liquids.
- Clean the module with a soft, dry cloth if necessary. Do not use harsh chemicals or abrasive cleaners.
- Ensure the MMI connector is free from dust and debris.
8. Troubleshooting
8.1. No Power to the Module
- Check the 12V+ and ground connections to ensure they are secure and correctly wired.
- Verify that the car's ignition is on.
8.2. No Sound Output
- Ensure your car stereo is set to the 'AUX' input source.
- Check the volume levels on both your car stereo and your connected Bluetooth device.
- Confirm that your Bluetooth device is successfully paired and playing audio.
8.3. Cannot Pair with Bluetooth Device
- Make sure the module is powered on (car ignition is on).
- Ensure Bluetooth is enabled on your smartphone/device.
- Try turning Bluetooth off and on again on your device.
- If the module was previously paired with another device, ensure that device's Bluetooth is off or out of range.
- Restart your car's stereo system.
9. User Tips
- MMI Compatibility: Always double-check that your Mercedes-Benz vehicle is equipped with an MMI (Media Interface) socket before purchasing and installing this module. This is crucial for proper function.
- Audio Quality: For the best audio experience, ensure your audio files are of good quality and your device's volume is set appropriately before adjusting the car stereo volume.
10. Warranty and Support
For any issues, questions, or support needs regarding your GISAEV Car Bluetooth Wireless Module, please contact the seller or manufacturer directly. Keep your purchase receipt for warranty claims.
