1. Introduction
The HIWORLD CANBUS BZ11.20 Wiring Harness is designed to integrate aftermarket car multimedia systems with your vehicle's existing CANBUS network. This allows for seamless communication, enabling features such as steering wheel control functionality, display of vehicle information, and proper power management for your new head unit.
Package Contents:
- HIWORLD CANBUS BZ11.20 Module
- Vehicle-specific Wiring Harness
- RCA Audio/Video Cables (if applicable)
- Antenna Adapter (if applicable)
Figure 1: Complete HIWORLD CANBUS BZ11.20 Wiring Harness and Module.
2. Vehicle Compatibility
This CANBUS wiring harness is compatible with various Mercedes-Benz models. Please verify your vehicle's make, model, and year against the list below:
- A-Class W169 (2004-2012, Gen 2)
- A-Class W176 (2012-2017, Gen 3)
- B-Class W245 (2005-2011, Gen 1)
- B-Class W246 (2012-2017, Gen 2)
- C-Class W204 (2008-2014, Gen 3)
- CLK Class W209 (2002-2009, Gen 1)
- E-Class (2009-2015, Gen 4.C2007)
- GL350/400/450/X164 (2005-2013, Gen 2)
- GLK-Class, X204 (2008-2015, Gen 1)
- ML Class, W163 (1997-2005, Gen 1)
- ML300/350/450/W164 (2005-2011, Gen 2)
- M-Class, W166 (2011-2016, Gen 3)
- R-Class, W251 (2006-2014, Gen 2)
- S-Class, W220 (1999-2005)
- SL300 (2011-2020)
- Sprinter, NCV3 (2006-2018, Gen 2)
- Viano (2010-Present, Gen 2)
- Vito, W639 (2003-2013, Gen 2)
- Metris (2016-Present)
The CANBUS module label also indicates compatibility for specific models and years:
- 05-11 B200
- 05-11 ML350
- 16 Metris
- 06-14 R350
- 03-13 Vito
Figure 2: Close-up view of the CANBUS module label.
3. Setup and Installation
Important Safety Precautions:
- Always disconnect the vehicle's battery before beginning any electrical work to prevent short circuits or damage.
- Ensure the vehicle is turned off and the key is removed from the ignition.
- If you are unsure about any step, consult a professional car audio installer.
Installation Steps:
- Remove Existing Head Unit: Carefully remove your vehicle's factory head unit according to your vehicle's service manual or a reliable online guide.
- Identify Vehicle Wiring: Locate the factory wiring harness connector(s) in your dashboard.
- Connect to Aftermarket Head Unit: Connect the HIWORLD CANBUS BZ11.20 wiring harness to your new aftermarket multimedia head unit. Ensure all connections are secure.
- Integrate CANBUS Module: Connect the HIWORLD CANBUS BZ11.20 module into the designated connector on the wiring harness. The module facilitates communication between the head unit and the vehicle's CANBUS system.
- Connect to Vehicle: Plug the vehicle-specific end of the HIWORLD wiring harness into your car's factory wiring harness connector(s).
- Connect Ancillary Cables: If your setup includes RCA cables for audio/video, antenna adapters, or other auxiliary connections, connect them now.
- Initial Test: Before fully reassembling the dashboard, temporarily reconnect the vehicle's battery. Turn on the ignition and test the basic functions of your new head unit, including power, audio, and steering wheel controls.
- Secure Wiring and Reassemble: Once all functions are verified, disconnect the battery again. Neatly route and secure all wiring to prevent rattles or interference. Reassemble the dashboard components.
- Final Test: Reconnect the battery and perform a comprehensive test of all head unit features and vehicle integrations.
4. Operating Instructions
The HIWORLD CANBUS BZ11.20 Wiring Harness and module operate automatically once correctly installed. Its primary function is to translate signals between your aftermarket head unit and your vehicle's CANBUS system.
- Steering Wheel Controls: After installation, your aftermarket head unit should recognize and respond to your vehicle's factory steering wheel audio controls (e.g., volume up/down, track skip, mode). Some head units may require a brief setup or learning process for these controls, which can usually be found in the head unit's own instruction manual.
- Vehicle Information Display: Depending on your aftermarket head unit's capabilities and your vehicle's CANBUS system, certain vehicle information (e.g., climate control status, door open warnings, parking sensor data) may be displayed on the head unit screen.
- Ignition and Accessory Power: The CANBUS module provides the correct ignition and accessory power signals to your head unit, ensuring it turns on and off with the vehicle and retains settings.
5. Maintenance
The HIWORLD CANBUS BZ11.20 Wiring Harness requires minimal maintenance. Follow these guidelines to ensure long-term performance:
- Regular Inspection: Periodically inspect the wiring and connections behind your head unit for any signs of wear, corrosion, or loose connections.
- Keep Dry: Ensure the CANBUS module and all connections remain dry and free from moisture.
- Avoid Physical Damage: Protect the wiring harness and module from physical stress or damage during any other work performed in the vehicle's dashboard area.
6. Troubleshooting
If you encounter issues after installing the wiring harness, refer to the following troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Head unit does not power on. | Loose power connection, incorrect wiring, blown fuse. | Check all power connections. Ensure the vehicle's battery is connected. Inspect vehicle fuses and head unit fuses. Verify wiring against diagrams. |
| No sound from speakers. | Loose speaker connections, incorrect speaker wiring, head unit settings. | Check all speaker wire connections. Ensure RCA cables (if used) are properly connected. Verify head unit audio settings. |
| Steering wheel controls not working. | CANBUS module not connected, incorrect CANBUS connection, head unit not configured. | Ensure the CANBUS module is securely connected to the harness. Check the head unit's settings for steering wheel control configuration or learning mode. Confirm vehicle compatibility. |
| Vehicle information not displayed. | Head unit incompatibility, CANBUS module issue, vehicle not supported for specific data. | Verify your aftermarket head unit supports displaying CANBUS data. Ensure the CANBUS module is functioning correctly. Not all vehicle data may be transmittable or displayable. |
| Intermittent issues or erratic behavior. | Loose connections, electrical interference. | Re-check all connections for tightness. Ensure wiring is not pinched or damaged. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand Name | alphakey |
| Model | BZ11.20 (HIWORLD CANBUS) |
| Item Type | Cables, Adapters & Sockets |
| Origin | Mainland China |
| Package Length | 18 cm |
| Package Width | 12 cm |
| Package Height | 6 cm |
| Package Weight | 0.16 kg |
| CANBUS Module ID | HIN4BZ110A 220607 |
| Part Number | 2473023681_3120510759 |
8. User Tips
- Verify Head Unit Compatibility: Before purchasing or installing, always confirm that your specific aftermarket multimedia head unit is designed to work with external CANBUS decoders and supports the features you expect (e.g., steering wheel controls).
- Double-Check Vehicle Model Year: Even within the same model, Mercedes-Benz vehicles can have different wiring or CANBUS protocols across different production years or generations. Ensure the BZ11.20 is explicitly listed for your exact vehicle year and generation.
- Professional Installation Recommended: While DIY installation is possible for experienced individuals, professional installation is recommended to ensure correct wiring and optimal performance, especially with complex vehicle electronics.
9. Frequently Asked Questions (FAQ)
- Q: Does this CANBUS harness work with a Pioneer 6650 multimedia system?
- A: Compatibility with specific aftermarket head units like the Pioneer 6650 depends on the head unit's design and its ability to interface with external CANBUS modules. Please consult the Pioneer 6650's instruction manual or Pioneer's support to confirm compatibility with universal CANBUS decoders.
- Q: Is this CANBUS compatible with a Mercedes ML 350 from 2012-2015?
- A: The BZ11.20 model is listed as compatible with ML350 (W164, 2005-2011). For ML350 models from 2012-2015, which typically fall under the W166 generation, please verify the specific generation and ensure the module's compatibility with your vehicle's exact specifications. The module label specifically mentions "05-11 ML350".
10. Warranty and Support
For any questions, technical assistance, or warranty claims, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.
