Component Description For Audio/COMAND Control Panel - GF54.21-P-4501GR
MODEL 166 up to model year 2016
Shown on model 166.0
Location
The Audio/COMAND control panel is located on the center console between the front seats.
Task
The Audio/COMAND control panel includes:
- Audio/COMAND controller for navigation within the menu and selection of menu items, for operation of character bar on Audio/COMAND display (A40/8) and for navigating on the Internet
- "Back" button, to jump back a level within a menu
- "Delete" button, to delete individual characters or complete entries
- Left free programming button and right free programming button, to jump to a user-defined menu or to be able to activate the multicontour seats (with CODE 399 (Front multicontour seats with massage function)) function
The Audio/COMAND control panel performs the following:
- Operating unit for entertainment and communication systems integrated into vehicle
- Transmission and reception of signals
- Actuation of system components
Operating unit for entertainment and communication systems integrated into vehicle
The audio equipment provides the user with a structured and standard interface for the following system components, which can be operated using the Audio/COMAND control panel:
Audio:
- Radio
- CD (also MP3) AUX electrical connection (X39/45) up to 13.12.2013, for external audio equipment (except CODE 518 (Media Interface))
- USB electrical connector (X115)
- Media interface electrical connector (X18/70) (with CODE 518 (Media interface))
Video:
- DVD audio/DVD video (with CODE 512 (COMAND APS with DVD changer), CODE 527 (COMAND APS with single DVD drive (with navigation)) and CODE 528 (COMAND incl. DVD changer))
- TV (with CODE 863 (Digital/analog TV tuner) or CODE 865 (TV tuner))
- Telephone
- Internet (with CODE 527 (COMAND APS with single DVD drive (with navigation)), with CODE 512 (COMAND APS with DVD changer) except CODE 494 (USA version), with CODE 512 (COMAND APS with DVD changer) with CODE 348 (Emergency call/Assist system))
- Navigation (with CODE 512 (COMAND APS with DVD changer), with CODE 527 (COMAND APS with single DVD drive (with navigation)))
Transmission and reception of signals
The signals are sent and received over the following connections:
- Direct lines
- Controller Area Network (data bus/CAN bus) (CAN)
Direct lines
The Audio/COMAND control panel contains the following direct connections:
- Terminal 30g
- Circuit 31
Controller Area Network (data bus/CAN bus) (CAN)
The Audio/COMAND control panel sends control data to the components of the telematics CAN (CAN A).
Actuation of system components
The Audio/COMAND control panel can be used to select the audio equipment functions.
Schematic view of operating functions
The buttons are designed as push/push buttons.
The following individual operations are possible with the Audio/COMAND control panel:
- Press: Down vertically
- Turn: To left or right
- Slide: In four quadrants (Y and X direction, and in diagonal direction)
| Technical data Designation |
Unit | Values | Tolerance range | Remarks |
|---|---|---|---|---|
| Audio/COMAND control panel (A40/9) | ||||
| Voltage supply | V | 12...15 | Battery voltage U B | |
| Voltage limits | V | 9 | Minimum U Bmin | |
| V | 16 | Maximum U Bmax | ||
| Power consumption | A | Unknown | Readiness (I B ) | |
| mA | 70 | Action (I Action ) | ||
| mA | < 0.1 | No-load current I 0 | ||
| Reverse polarity protection | Yes | |||
| Additional specific parameters | None | |||
| Special features | None | |||
| Flash capability/coding capability | YES / k. A. |
| Wiring diagram, front central operating unit | A40/9 | PE82.00-P-2060-97NAA |