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Home >> Mercedes Benz >> 2012 >> S 350 BLUETEC (221.183) V6-3.0L DSL Turbo (642.868) >> Repair and Diagnosis >> Accessories and Optional Equipment >> Radio, Stereo, and Compact Disc >> Description and Operation >> GF82.60-P-2020LE Media Interface Function

GF82.60-P-2020LE Media Interface Function



GF82.60-P-2020LE Media Interface Function
- with CODE (518) Media interface

General function requirements
^ C. 30g ON or c. 15R ON

Media interface, general
The media interface function is also called the "Universal Consumer Electronic Interface".

The following portable devices can be connected to this universal consumer electronic interface cable using an adapter cable:
- AUX unit (class 1) (e.g. MP3-player)
- "iPod"
- Universal serial bus (USB) unit ("Device Subclass 3") (e.g. USB sticks, USB hard disks)

The AUX socket in the glove box is eliminated.

The portable device is connected to the COMAND controller unit (A40/3) via the adapter cable, the media interface connector 1 (X18/67), the media interface control unit (N125/1) and Media Oriented System Transport (MOST).

The following data formats are supported:
- MP3
- Windows Media Audio (WMA)

If the COMAND controller unit does not support the connected portable device, the portable device is deep discharged or the media interface connector 1 is defective, a corresponding message is issued via the COMAND display (A40/8) (without code (867) SPLITVIEW or the SPLITVIEW display (A40/10) with code (867) SPLITVIEW).

The portable device is operated via menu guidance in the COMAND controller unit, which can be operated via one of the following components:
- COMAND controller unit
- Front central operating unit (A40/9)
- Left multifunction steering wheel button group (S110) and right multifunction steering wheel button group (S111)

Function sequence for media interface
The media interface control unit is supplied with power via two direct lines (c. 31g and c. 30g).
Connection of the portable terminal is recognized by the media interface control unit.
The media interface control unit then sends an electrical wake-up signal to the COMAND controller unit over a direct line. The COMAND controller unit is switched on and simultaneously activates (wakes up) the MOST if the COMAND controller unit has not already been switched on by a previous action from another system.

The user can now have the audio or video data on the portable device displayed by selecting the relevant submenu:
- "Media interface" menu
- "Play lists"
- "Artists"
- "Albums"
- "Genres" or "Audiobooks"

The menu system is displayed on the COMAND display or via the SPLITVIEW display and varies depending on the portable device connected:

Selection of the "Media interface" menu item and the specific submenus is possible using one of the following controls:
- Buttons on the COMAND controller unit
- Front central operating unit
- Multifunction steering wheel button groups

The control signals from the buttons of the COMAND control unit are processed internally.

The settings via the front central operating unit are transmitted to the COMAND controller unit via the telematics CAN (CAN A).

The control signals of the multifunction steering wheel button groups are transferred to the COMAND control unit over the following path:
- Steering LIN (LIN E1)
- Steering column tube module (N80)
- Chassis CAN (CAN E)
- Central gateway control unit (N93)
- Central CAN (CAN F)

After the COMAND controller unit has processed the control signals, it transmits the corresponding requests to the portable device over the following route:
- MOST
- Media interface control unit
- Media interface connector 1
- Adapter cable

The audio signals and data are transmitted from the connected portable device to the COMAND controller unit over the following route:
- Adapter cable
- Media interface connector 1
- Media interface control unit
- MOST

The video signals and data are transmitted via a coaxial line to the COMAND controller unit. The video signals and data are then processed internally by the COMAND controller unit and transmitted to the COMAND display or to the SPLITVIEW display over a low voltage differential signaling (LVDS) line.

The audio signals are output over the vehicle's speaker system. For this purpose, the COMAND controller unit transmits the audio signals via MOST to the audio tuner control unit (N93/1), which processes them accordingly, amplifies them and outputs them over the vehicle's speaker system.

The speaker system in model 216 comprises the following components:
- Left door speaker group (H4/1)
(without code (810) Sound system)
- Right door speaker group (H4/2)
(without code (810) Sound system)
- Left door rear speaker (H4/3)
- Right door rear speaker (H4/4)
- Bass module speaker (H4/17)
- Center cockpit speaker (centerfill) (H4/27)
- In addition with code (810) Sound system:
- Left rear surround speaker (H4/54)
- Right rear surround speaker (H4/57)
- Left door sound tweeter (H4/68)
- Right door sound tweeter (H4/69)
- Left door sound woofer and midrange speaker group (H4/72)
- Right door sound woofer and midrange speaker group (H4/73)

The speaker system in model 221 comprises the following components:
- Left front door speaker group (H4/1)
(without code (810) Sound system)
- Right front door speaker group (H4/2)
(without code (810) Sound system)
- Left rear door speaker group (H4/3)
- Right rear door speaker group (H4/4)
- Bass module speaker
- Center cockpit speaker (centerfill)
- In addition with code (810) Sound system:
- Left rear surround speaker
- Right rear surround speaker
- Left front door sound tweeter (H4/68)
- Right front door sound tweeter (H4/69)
- Left front door sound woofer and midrange speaker group (H4/72)
- Right front door sound woofer and midrange speaker group (H4/73)





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