Adapter for steering wheel control Mercedes A, B, C, E, R, CLK, SLK, GL, ML amplifier MOST25.

Description

When replacing a factory radio with an aftermarket radio, the original steering wheel remote control functions must be retained.
Depending on the vehicle's equipment and the functionality and software of the retrofit device, individual operating functions may be omitted or replaced with other functions.
Compare the adapter plugs shown with those in your vehicle and ensure a visual and technical match.
Also check whether your vehicle is equipped with one of the listed original factory radios.
Before final installation, check the vehicle's operation, vehicle settings, and steering wheel remote control for functionality.

Attention:

• CAN BUS
• Connection: 40-pin Quadlock Mercedes connector
• Connection: OEM sound system MOST25 > Cinch(m) red/white
• Vehicles with OEM 2-DIN Audio 20 device
• Vehicles with OEM 2-DIN Audio 50 APS Comand NTG2/NTG2.5 navigation*
• Vehicles with OEM MOST25 sound system**
• Vehicles without OEM Audio 10 device
• Vehicles without Comand 2.0 / 2.5 OEM navigation
• Vehicles without D2B OEM sound system
• DIP switch settings for the manufacturer of the retrofit device (see BDA)
• Cinch(m) > front preamplifier output for retrofitted radio
• Fader function not supported

Make and model:

• Mercedes A-Class (C169/W169) 10/2004 – 04/2008
• Mercedes A-Class (C169/W169) 06/2008 – 06/2012
• Mercedes B-Class (T245) 07.2005 – 04.2008
• Mercedes B-Class (T245) 04.2008 – 09.2011
• Mercedes C-Class (CL203/S203/W203) 02/2004 – 09/2007
• Mercedes CLK-Class (W209) 04.2005 – 01.2010
• Mercedes GL-Class (X164) 09.2006 – 05.2009
• Mercedes GL-Class (X164) 05.2009 – 07.2012
• Mercedes M-Class (W164) 07/2005 – 04/2008
• Mercedes M-Class (W164) 10/2008 – 07/2011
• Mercedes ML (W164) 07/2005 – 04/2008
• Mercedes ML (W164) 10/2008 – 07/2011
• Mercedes R-Class (W251) 09/2005 – 05/2007
• Mercedes R-Class (W251) 05/2007 – 05/2010

The following signals are provided:

• Re-imported vehicles or vehicles with different software may have incompatible features.
• red: ignition terminal +12V 15
• orange: lighting terminal +12V 58
• purple/white: +12V reverse signal
• pink: speed signal
• green: handbrake signal ground GND
• Output load capacity: max. 250 mA.
• Current requirements greater than 250 mA:
• 1 relay coil resistance 75 ohms min.
• 2 Coil resistance Ralais 150 Ohm min.
• Steering wheel remote control
• OEM MOST25 Sound System > Fader function not supported
• *Time settings not supported > If possible, code vehicles to OEM Audio 20 device
• **Additional OEM components > Remove CD changer/TV tuner/phone module from MOST ring:
• MOST ring fiber optic cable connector > Article: 771000-2100
• Fiber optic loop (f) MOST ring > Article: 771000-2101

General installation instructions:

Test:
1: Check all operational and vehicle setup functions of the OEM device
2: Disassemble the OEM device with no voltage
3: Check all interface connections for correctness and continuity with no voltage

Connection and connection sequence:
1: Perform settings and hardware configuration of the interface without voltage
2: Check the configuration of the radio connection cable
3: Connect the radio connection cable according to the operating instructions of the retrofitted device
4: Make all other connections according to the operating instructions of the retrofitted device
5: Connect the entire installation to the vehicle with the live connection as the last
step 6: Configure the interface software according to the information contained in the article text and in the BDA
7: Configure the retrofitted device according to the operating instructions of the retrofitted device remote control on the steering wheel/camera/FSE/phantom power supply of the antenna and others
8: Functional test of the remote control on the steering wheel and the vehicle

Changes to the hardware configuration of the interface and the cable for connecting the radio:
1: Make changes without voltage
2: Connection after modification, see 5 to 8 above

If the interface or vehicle is not working properly:
1: Update to OEM device
2: Operate OEM device
3: Establish CAN bus silence
4: Check interface hardware configuration
5: Connect after CAN bus rest, see 5 to 8 above

Connections, changes to connections, alternative connections, connections of loose cables or extensions of connections of loose cables given in the information text or operating instructions are for orientation and information purposes only for trained specialist personnel.

Additional connections, changes to the wiring configuration in the wiring harness or the use of alternative connections or connection extensions:
1: Connections and changes must only be carried out by trained specialists
2: Before connecting, connections and changes must be checked for any manufacturer approvals or manufacturer warranty conditions that may be affected by the changes
3: Before connecting, connections and changes must be checked for functionality and correctness by measuring and comparing using the vehicle's wiring diagram
4: Connections and changes are made at your own risk and functionality is not guaranteed
5: Connections and changes are made at your own risk and there is no guarantee of damage to the vehicle, retrofit device or interface
6: Modifications to the pre-assembled wiring harness may void the product warranty