GF82.85-P-0003PM Cockpit Management and Data System (COMAND), Function
GF82.85-P-0003PM Cockpit Management And Data System (COMAND), Function
MODEL 203.0 /2 /7 as of 24.4.04
- with CODE (527) COMAND APS with single DVD drive (with navigation)
- up to Model Year 8
MOST Media Oriented System Transport
A1 Instrument cluster
A2/6 CD changer (in glove compartment)
A2/13 Sound amplifier
A2/22 Telephone antenna
A2/23 GPS antenna
A2/72 Window antenna amplifier module 2
A2/73 Amplifier module 3, window antenna
A28/3 E-network compensator
A34/15 UPCI portable CTEL holder (Universal Portable CTEL Interface)
A40/3 COMAND operating, display and control unit
B25/6 Sound amplifier microphone
N80 Steering column module
N123/1 UPCI control unit (Universal Portable CTEL Interface)
S110 Left multifunction steering wheel button group
S111 Right multifunction steering wheel button group
With the aid of the COMAND operating, display and control unit (A40/3) the following systems can be operated centrally:
- Integrated radio
- Integrated CD drive
- Navigation with dynamic route guidance
- Dynamic navigation system Germany
- CD changer 6 disc with code (819)
- Telephone "portable CTEL" UPCI system with code (388)
- Sound system with code (810)
- Voice control system (VCS) with code (813)
An electrical connection on the front side of the glove compartment enables audio signals from a Walkman to be transmitted to the radio.
The COMAND operating, display and control unit (A40/3) is the central component in the COMAND system. It contains a video capable LCD color display for showing information such as operating menus and map data for the navigation.
It is operated by means of fixed function keys and 2 rotary controls as well as menu-guided in the display. Several functions can also be activated with the aid of the pushbuttons on the multifunction steering wheel (MFL). It should be noted that all pushbutton operations on the multifunction steering wheel (MFL) are processed first by the instrument cluster (A1). The instrument cluster (A1) combines the incoming button presses with the current menu setting on the multifunction display (A1p13), and sends an appropriate Controller Area Network (data bus/CAN bus) (CAN) message to the COMAND operating, display and control unit (A40/3) if necessary.
The vehicle can also be equipped optionally with an infrared remote control for issuing commands from the rear passenger compartment and with code (813) a voice control system (VCS) for the telephone and several audio functions, which serve to enhance the operating convenience level yet further.
COMAND bus system
The digital components in the COMAND operating, display and control unit (A40/3) are interlinked through a bus system. The bus system is used to transmit data (control commands and useful information) between the various system components.
The individual components operate with different data formats and have different requirements in terms of transmission speed and reliability.
For this reason, various bus systems have been installed. These include the following:
- Media Oriented System Transport (MOST) The MOST bus is used to exchange data between the sound amplifier (A2/13), CD player with changer (in glove compartment) (A2/6) the telephone system and, if present, the voice control system A35/11. Both control data as well as the audio signals are transmitted.
- Controller Area Network bus Class B (interior) (CAN-B) Data interchange with the instrument cluster takes place over CAN-B (A1). Thus the instrument cluster (A1) receives the audio, telephone and navigation data from the COMAND operating, display and control unit (A40/3) for the multifunction display (A1p13) in the instrument cluster (A1) as well as the time via this bus.
With the "Audio AUX" function additional audio sources (e.g. MP3-players, Walkman) can be connected. To this end, an AUX socket is provided as a connection option in the glove compartment.
