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Media interface function - GF82.60-P-2020G

MODEL 463.306 /336 /346 up to 31.5.12 with CODE (EH3) Media Interface as of Model Year 2011 /YoM 10 

MODEL 463.202 /222 /236 /237 /270 /271 /303 /340 /341 up to 31.5.12 with CODE (EH3) Media Interface as of Model Year 2009 /YoM 08 

Shown on code (EU9) Surround sound system (harman/kardon Logic 7) 

Fig 1: Media Interface Function Diagram
G07891385Courtesy of MERCEDES-BENZ USA

Function requirements, general 

IMPORTANT Depending on the equipment installed one of the following control units will be installed, hereafter referred to as the "audio unit":

Media interface, general 

The media interface function enables the connection of the following portable end devices via an adapter cable, media interface connector 1, the media interface control unit and MOST to the audio equipment:

The AUX devices without operation are connected to the AUX jack. iPods are connected to the iPod connector. USB devices can be connected to the USB jack. MTP devices can be connected to the USB jack and AUX jack.

IMPORTANT The conventional AUX jack installed in the glove box is eliminated.

IMPORTANT As of 1.9.09 (without code (EF5) MB Audio 20 CD radio, (NTG 2.5):

With the audio source "AUX" (via media interface adapter cable (accessories)) the selections "Standard" and "Boost" are possible in the "Volume" menu. The input level can be increased by selecting "Boost".

Media interface operating instructions 

The portable devices listed are controlled using one of the following controls:

Menu guidance and graphic representation of the menu guidance occur on the display of the audio equipment and depend on the respective portable end device connected.

Function sequence for media interface 

The media interface control unit is supplied with voltage via two direct lines (circuit 31 and circuit 30). If a portable device is connected, it is recognized by the media interface control unit via the following route:

The media interface control unit then sends an electrical wake-up signal to the audio equipment via a direct line. The audio equipment is switched on and simultaneously activates (wakes up) the MOST if the audio equipment has not yet been switched on by a previous action from another system.

Simultaneously the audio signals and data of the connected portable end device connected are transferred to the audio equipment via the following route:

The video signals and data are transferred from media interface connector 1 to the audio equipment via direct lines.

The user can now display the audio signals and data or video signals and data in the display of the audio equipment by selecting the menu item "Media Int." in the "Disk" menu as well as the respective submenu item "Media Int." or "Music". The video signals and data are transferred to the display of the audio equipment internally in the audio equipment.

The "Media Int." menu item in the "Disc" menu and the relevant submenu item are selected using one of the following controls:

The control signals of the control buttons on the audio equipment are processed internally.

The control signals of the multifunction steering wheel button groups are forwarded to the audio equipment over the following route:

Following evaluation of the control signals in the audio equipment, they are forwarded by the audio equipment to the connected portable end device via the following route:

The connected portable end device evaluates the control signals and sends the corresponding audio signals and data to the audio equipment via the following route:

The video signals and data are transferred by the media interface connector to the audio equipment via direct lines.

Showing the video signals and data on the display of the audio equipment is performed internally in the audio equipment.

The audio signals and data are output on vehicles with code (EU9) Surround sound system (harman/kardon Logic 7) by the audio equipment via MOST to the sound system amplifier and from there via direct lines to the following speakers:

On vehicles without code (EU9) Surround sound system (harman/ kardon Logic 7), the audio signals are output by the audio equipment via direct lines over the following speakers:

  Radio control panel, component description A2
With code (EF5) MB audio 20 CD radio, (NTG 2.5)		 GF82.60-P-3116G 
  Component description for COMAND operating, display and controller unit A40/3
With code (EU1) COMAND, APS without code (ZJ1) Japan version		 GF82.85-P-3134GB
With code (EU1) COMAND, APS with code (ZJ1) Japan version GF82.85-P-3134GAJ
  Component description for sound system amplifier N40/9
With code (EU9) Surround sound system (harman/kardon Logic 7)		 GF82.62-P-6003G 
  Electronic ignition/starter switch control unit (EZS), component description N73 GF80.57-P-6000G
  Component description for steering column tube module N80 GF54.21-P-6050G
  Component description for media interface control unit N125/1 GF82.60-P-5000G 
  LIN converter, component description N135 GF82.90-P-4023G
  Multifunction steering wheel button group, component description S110, S111 GF82.90-P-4001G
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