Steering wheel control adapter for Mercedes a, b, c, e, r, clk, slk, gl, ml most25 amplifier.

When replacing the factory radio with an aftermarket radio, the original functions of the steering wheel remote control must be retained. Depending on the vehicle equipment and the scope of functions and software of the retrofit device, individual operating functions may be omitted or replaced by other functions. Compare the adapter plugs shown with the plugs in your vehicle and make sure that they match visually and technically. Also check whether one of the specified original factory radios is installed in your vehicle. Before final installation, check the vehicle's operation, vehicle settings and the steering wheel remote control for functionality. Note: CAN BUS Connection: 40-pin Mercedes Quadlock connector Connection: OEM MOST25 sound system > Cinch(m) red/white Vehicles with OEM 2-DIN Audio 20 Vehicles with OEM 2-DIN Audio 50 APS Comand NTG2/NTG2.5 navigation* Vehicles with OEM MOST25 sound system** Vehicles without OEM Audio 10 Vehicles without Comand 2.0 navigation / 2.5 OEM Vehicles without D2B OEM sound system DIP switch settings for the retrofit device manufacturer (see BDA) Cinch(m) > front preamplifier output for retrofit radio Fader function is 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 - 05.2010The following signals are provided: Re-imported vehicles or vehicles with different software may have incompatible functions. red: ignition terminal +12V 15 orange: lighting terminal +12V 58 purple/white: reversing signal +12 V 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 Ralais coil resistance 150 Ohms 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 **OEM additional components > Remove CD changer/TV tuner/telephone module from MOST ring: MOST ring fiber optic cable connector > Article: 771000-2100 Fiber optic loop (f) MOST ring > Article: 771000-2101General installation instructions:Test:1: Check all operational functions and vehicle setting functions of the OEM device2: Dismantle the OEM device without voltage3: Check all interface connections for correctness and continuity without voltageConnection and connection sequence:1: Make settings and hardware configuration of the interface without voltage2: Check the configuration of the radio connection cable3: Connect the radio connection cable according to the operating instructions of the retrofitted device4: Make all other connections according to the operating instructions of the retrofitted device5: Connect the entire installation to the vehicle with 6: Configure the interface software according to the information in the article text and in the BDA7: Configure the retrofit device according to the operating instructions for the retrofit device steering wheel remote control/camera/FSE/phantom power supply for the antenna and others8: Functional test of the steering wheel remote control and the vehicleChanges to the hardware configuration of the interface and the cable for connecting the radio:1: Make changes without voltage2: Connection after modification, see 5 to 8 aboveIf the interface or the vehicle does not function properly:1: Update to the OEM device2: Operate the OEM device3: Establish CAN bus silence4: Check the hardware configuration of the interface5: Connection after CAN bus rest, see 5 to 8 aboveThe 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 extensions of connections:1: Connections and Only trained specialists should carry out the changes2: Before connecting, check the connections and changes for any manufacturer approvals or manufacturer warranty conditions that may be affected by the changes3: Before connecting, check the connections and changes for operation and correctness by measuring and comparing them using the vehicle's wiring layout4: Connected