Steering wheel button control adapter for Mercedes ACV SWC 42XMC013-0

Steering wheel button control adapter for Mercedes ACV SWC 42XMC013-0

Retain the original steering-wheel radio control functions when replacing the factory radio with an aftermarket unit. Depending on vehicle equipment, available functions and the software of the newly installed radio, some functions may be limited or replaced by others. Compare the shown wiring connectors with the connectors in your vehicle and make sure 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 control (SWC).

Designed for vehicles

• Mercedes CLS-class (W219) (10/2004 -> 06/2008)
• Mercedes E-class (W211) (03/2002 -> 02/2008 — glove box electric function not supported)
• Mercedes SLK-class (R171) (03/2004 -> 03/2008)

CAN Bus information

Connectors and power:

• Connector: 2-pin Mercedes.
• Connector: 2-pin CAN Bus distributor.
• Connector: OEM amplifier system MOST > RCA(m) red/white.

Compatibility and limitations:

• Vehicles with 2-DIN Audio 50 APS Comand NTG2 / NTG2.5 OEM Sat Nav.
• Vehicles with Harman Kardon OEM amplifier system.
• Vehicles with MOST25 OEM amplifier system.
• Vehicles with Audio gateway.
• Vehicles without Comand 2.0 / 2.5 OEM Sat Nav and without D2B Optical Bus.
• Fader function is not supported.
• Clock adjustment is not supported — if possible recode the vehicle to Audio 20 OEM HU.
• Antenna extension cable is not included (optional accessories below).
• In individual cases, depending on the OEM system and the aftermarket radio, increased noise or switching noises may occur when powering on/off.

Signals and output load capacity:

• Red: +12 V ignition-switched (terminal 15).
• Orange: +12 V illumination (terminal 58).
• Purple/white: +12 V reverse signal.
• Pink: speed pulse signal.
• Green: GND signal for parking brake.
• Max. output load: 250 mA. If consumption exceeds 250 mA use a relay — 1 relay with coil resistance min. 75 Ω, 2 relays with coil resistances min. 150 Ω.

Important additional information

• OEM units such as CD changer / TV tuner / telephone module must, if necessary, be removed from the MOST loop (optical MOST connector / optical loop).
• To fully activate the adapter, order the radio-specific connection cable for your radio brand.

Optional accessories

• Antenna extension cable Fakra(m) > Fakra(f) 200 cm.
• Antenna extension cable Fakra(m) > Fakra(f) 500 cm (ROKA).
• Antenna adapter Fakra Z(m) > DIN(m) passive (LEONI/ROKA).

General installation instructions

Checks before installation:

1. Check all steering controls and vehicle settings with the original OEM head unit installed.
2. Disconnect the original radio (OEM HU) with power off.
3. Check all interface connections to ensure they are correctly connected — with power off.

Connection and wiring sequence:

1. Check the interface settings and hardware configuration — with power off.
2. Check the configuration of the connection cable to the radio — with power off.
3. Connect the cable to the radio according to the aftermarket device manual.
4. Connect the other 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 HU (steering wheel control, camera, handsfree, 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.

If the interface or vehicle system fails:

• Reinstall the original OEM HU.
• Start the original unit.
• Initiate shutdown of the CAN Bus system.
• 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 must be carried out only by professionally trained personnel.
• All changes must be verified in terms of manufacturer approval or 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 warranty of functionality.
• Modifications are performed at your own risk, without guarantee against damage to the vehicle, device or interface.
• Pre-modified cabling may result in loss of product warranty.

Product comments

Evaluation

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