Steering wheel button control adapter for Mercedes ACV SWC 42XMC006-0

Steering Wheel Button Control Adapter for Mercedes ACV SWC 42XMC006-0

Preserve the original radio steering wheel control functions when replacing the factory radio with an aftermarket unit. Depending on the vehicle's equipment, the range of functions and the software of the newly installed radio, some functions may be limited or replaced by others. Compare the displayed wiring connectors with the connectors in your vehicle and ensure they match both technically and visually. Check whether one of the listed OEM head units was originally installed. Before final installation, verify vehicle functionality, system settings and correct operation of the steering wheel controls (SWC).

Intended for vehicles

• Mercedes C-class (W203) (03/2000 -> 04/2004)

CAN Bus information

Connectors and power:

• Connector: ISO / 10-pin ISO.
• Connector: OEM SWC > 3.5 mm jack / free wire.

Compatibility and limitations:

• Vehicles with Audio 10 / Audio 30 OEM head units.
• Vehicles with Comand 2.0 OEM sat nav with CAN Bus on the 18-pin AMP connector: Pin 8 brown – CAN low, Pin 9 red-brown – CAN high. This is not a Robert Bosch CAN.

Signals and output load capacity:

• Red: +12 V ignition-switched power (Terminal 15).
• Orange: +12 V illumination (Terminal 58).
• Purple/white: +12 V reverse signal.
• Pink: speed signal (speed pulse).
• Green: ground signal for parking brake.
• Max. output load: 250 mA. For currents above 250 mA use relays – 1 relay with coil resistance min. 75 Ω, or 2 relays with coil resistances min. 150 Ω.

Important additional information

• Steering wheel control (SWC) via CAN Bus. Reimported vehicles or vehicles with different software may experience function incompatibilities.
• To fully activate the adapter, you must order the brand-specific connection cable for the radio.

General installation instructions

Checks before installation:

1. Check all steering wheel control functions and vehicle settings with the original OEM head unit.
2. Disconnect the original radio (OEM head unit) with power off.
3. Check all interface connections to ensure they are correctly attached – with power off.

Connection sequence:

1. Check the interface settings and hardware configuration – with power off.
2. Check the configuration of the radio connection cable – with power off.
3. Connect the cable to the radio according to the aftermarket device manual.
4. Connect the remaining wires according to the device manual.
5. Connect the entire installation to the vehicle – connect the main power last.
6. Perform the software configuration of the interface according to the product description or manual.
7. Configure the aftermarket head unit (steering wheel control, camera, hands-free, antenna power and others).
8. Perform a functional test of the steering wheel controls and communication with the vehicle.

Changing the interface configuration and HU cable:

• Make all changes with power off.
• After changes, repeat steps 5 to 8 listed above.

In case of interface or vehicle system malfunction:

• Reinstall the original OEM head unit.
• Start the original unit.
• Initiate CAN Bus shutdown.
• Check the hardware configuration of the interface.
• After CAN Bus shutdown, repeat steps 5 and 6 listed above.

When modifying wiring or cable routing:

• Wiring and modifications should only be carried out by professionally trained personnel.
• All changes must be verified for manufacturer approval or potential impact on the vehicle warranty before connection.
• All modifications must be verified by measurement and compared with the vehicle wiring diagram before connection.
• Modifications are carried out at your own risk, without guarantee of functionality.
• Modifications are undertaken at your own risk, with no guarantee against damage to the vehicle, devices or interface.
• Modifying pre-assembled wiring may result in loss of the product warranty.

Product comments

Evaluation

• Car stereos Steering wheel button control adapters Mercedes-Benz steering wheel adapters
• Car stereos Steering wheel button control adapters Mercedes-Benz steering wheel adapters Mercedes C_Class steering wheel adapters
• Mounting material and ACV reduction