GF82.85-P-3008RA Data Transfer Between COMAND and Instrument Cluster Function

GF82.85-P-3008RA Data Transfer Between COMAND And Instrument Cluster Function
- with CODE (352) COMAND operating and display system
- except CODE (491) USA version
- except CODE (498) Japan version

Component Identification:

COMAND operation on multifunction steering wheel
The following COMAND controlled systems can be operated and information on the system displayed with the aid of the buttons on the multifunction steering wheel and the multifunction display (A1p13) of the instrument cluster (A1):
^ Audio systems: Radio, CD changer,...
^ Navigation system
^ Telephone

All data exchange between the instrument cluster (A1) and the COMAND operating, display and control module (A40/3) takes place via the CAN passenger compartment:
Actuation of the buttons on the multifunction steering wheel are read in voltage-coded by the steering column module (N80) and transported to the instrument cluster (A1) via the passenger compartment CAN bus.

The instrument cluster (A1) links these signals with the systems momentarily displayed on the multifunction display (audio, navigation, telephone).
This interpretation is necessary because the operation of the buttons depends on the current content of the multifunction display (A1p13).
The interpreted data is subsequently put onto the CAN by the instrument cluster (A1) and received by the COMAND operating, display and control module (A40/3).
Changing the system on the multifunction display has no effect on the display on the COMAND operating, display and control module(A40/3), however, it does have an effect in the opposite direction.

The instrument cluster (A1) receives the current time from the COMAND module because the time is received automatically via GPS and does not require resetting.

COMAND-specific operating and display facilities on the multifunction display:

Radio
Readout:
^ Set frequency band and possible memory slot number (e. g. FM1)
^ Name (only for RDS station) and frequency of station
^ Information as to whether station search should take place using frequency or stored station list ("SP")

Operation:
^ Volume
^ Station search using station list or frequency

CD changer (optional)
Readout:
^ Number of CD currently playing
^ Number of currently stored CD track

Operation:
^ Volume
^ Select title

Navigation
Readout:
^ Name of the road currently being traveled along
^ Next street to turn off into
^ Distance to next turning point (in units of length or as distance beam)
^ Turn-off arrow

Operation:
^ Volume of voice output

Walkman (connectable via separate socket in glove compartment)
Readout:
^ None

Operation:
^ Volume

Telephone
Readout:
^ Request for PIN entry
^ Name of provider
^ Vehicle outside transmit or receive range of telephone network
^ Telephone number (if stored) or name of caller (if transferred via radio)

Operation:
^ Volume
^ Selection of name from stored telephone book, display of telephone number and memory location number of party called
^ Acceptance of a call
^ Redial