Steering wheel button control adapter for BMW ACV SWC 42XBM012-0

Steering Wheel Control Adapter for BMW ACV SWC 42XBM012-0

Maintain the original steering wheel radio control functions when replacing the factory radio with an aftermarket unit. Depending on the vehicle's equipment, scope of functions, and software of the newly installed radio, some functions may be limited or replaced with others. Compare the displayed wiring connectors with those in your vehicle to ensure they match both technically and visually. Verify if one of the listed OEM radios was originally installed. Before final installation, check the vehicle's functionality, system settings, and proper steering wheel control (SWC) operation.

Designed for Cars

• BMW Series 1 [E81, E82, E87, E88] (2004 -> 2013) - original radio BMW Business, Professional.
• BMW Series 3 [E90, E91, E92, E93] (2005 -> 2013) - original radio BMW Business, Professional.
• BMW Series 5 [E60, E61] (2003 -> 2010) - original radio BMW Business, Professional.
• BMW X5 [E70] (2007 -> 2013) - original radio BMW Business, Professional.
• BMW X6 [E71, E72] (2008 -> 2014) - original radio BMW Business, Professional.

CAN Bus Information

Connectors and Power:

• Connector: 40-pin BMW Quadlock.
• Power: +12 V constant current (Terminal 30, fuse) – yellow wire.
• OEM MOST audio system connection to RCA (cinch) – red/white connector.
• Output for OEM steering wheel control: 3.5mm jack or free wire.

Settings:

• Set DIP switches according to the manufacturer of the aftermarket radio used.

Vehicle Compatibility:

• Vehicles with original Business/Professional radio.
• Vehicles with OEM MOST audio system.
• Vehicles without iDrive.

Vehicles with Parking Sensors (PDC):

• PDC supported, warning tones not supported (item: can-pdc).

Additional Connection Information:

• Cinch (RCA) – connect to the front pre-amplifier output of the aftermarket radio.
• Fader function not supported.

Available Auxiliary Signals:

• +12 V ignition (Terminal 15).
• +12 V lighting (Terminal 58).
• +12 V reverse.
• Speed signal.
• GND for handbrake signal.

Important Additional Information

• Designed for aftermarket radios Sony, Kenwood, JVC, Pioneer, Blaupunkt, Clarion, Alpine, LG, Zenec, XZent, Digital Dynamics, ESX, Snooper, and universal "China HU" with Key1/Key2/GND wires or 3.5mm jack depending on type.
• A connecting cable for the specific radio brand is required for full adapter activation.

General Installation Guidelines

Pre-installation Verification:

1. Check all control functions and vehicle settings with the original OEM head unit.
2. Perform radio removal without power.
3. Check all interface connections to ensure they are correctly connected – without power.

Connection and Wiring Order:

1. Perform interface setup and hardware configuration without power.
2. Check the configuration of the connection cable to the HU.
3. Connect the cable to the HU according to the aftermarket device manual.
4. Connect other wires according to the device manual.
5. Connect the entire installation to the vehicle – connect the main power connection last.
6. Perform software configuration of the interface according to the product description or manual instructions.
7. Configure the aftermarket HU (steering wheel control, camera, handsfree, antenna power, etc.).
8. Conduct a functional test of the steering wheel control and vehicle communication.

Changing Interface and HU Cable Configuration:

• Make all changes without power.
• After changes, repeat steps 5 to 8 above.

In Case of Interface or Vehicle System Malfunction:

• Reinstall the original OEM HU.
• Start the original unit.
• Wait for the CAN Bus system to sleep.
• Check HW configuration of the interface.
• After CAN Bus sleeps, repeat steps 5 to 8 above.

When Modifying Wiring or Cabling:

• Wiring and modifications should only be performed by professionally trained personnel.
• All changes must be verified for manufacturer approval or warranty impact before connection.
• All modifications must be verified by measurement and comparison with the vehicle's wiring diagram before connection.
• Modifications are made at your own risk, with no guarantee of functionality.
• Modifications are at your own risk, with no guarantee against vehicle, device, or interface damage.
• Changes to pre-installed cabling may result in loss of product warranty.

Product comments

Evaluation

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