Data transfer between COMAND and instrument cluster function - GF82.85-P-3008B

MODEL 208, 210 with CODE (352a) COMAND operating and display system

Networking of components

Fig 1: Identifying Instrument Cluster And Multifunction Display

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Operation of COMAND operating, display and control module (A40/3) using multifunction steering wheel

With the aid of the switches on the multifunction steering wheel and the multifunction display (A1p13) on the instrument cluster (A1) the following system controlled by COMAND can be operated and information about the systems displayed:

Audio systems : Radio, CD changer...
Navigation system
Telephone:

Data transfers between the instrument cluster (A1) and the COMAND operating, display and control module (A40/3) take place via the CAN (A40/3-A1):

All button presses on the multifunction steering wheel are read in by the instrument cluster (A1) (voltage coded).

The instrument cluster (A1) connects these signals to the system currently displayed on the multifunction display (navigation, audio, 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) .

The instrument cluster (A1) receives the current date and time from COMAND, since this information is automatically received via GPS and therefore does not need to be altered.

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

Cassette drive

(can be connected using separate socket in glove box)

Readout:

Operation:

Volume

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 track

Telephone (optional)

Readout:

Request for PIN entry
Name of provider
Vehicle outside transmit or receive range of telephone network
Telephone number (if stored) or name (if also transmitted by radio) of caller

Operation:

Volume
Selection of name from stored telephone book, display of telephone number and memory slot number of person called
Accepting a call
Redial

Navigation

Readout:

Street vehicle is currently on
Next street to turn off into
Distance to next turn-off point (in distance units or as distance bar)
Turn-off arrow

Operation:

Voice output volume

	Radio operation function		GF82.60-P-2001E
	CD player operation function		GF82.60-P-2002D
	Cassette operation function		GF82.85-P-2010C
	Navigation operation function		GF82.85-P-2012D
	Telephone operation function		GF82.85-P-2007D
	Volume/tone settings function		GF82.60-P-2003D