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Home >> Mercedes Benz >> 2009 >> E350 Base >> Repair and Diagnosis >> Accessories & Equipment >> Steering Column Switches >> COMAND, Entertainment, Navigation, Phone & Tele Aid -- Basic Knowledge -- E350 (211.256) >> Basic Knowledge >> Data exchange between operating unit and instrument cluster, function - GF82.85-P-3004TJ

Data exchange between operating unit and instrument cluster, function - GF82.85-P-3004TJ

MODEL 211.0/2 with CODE (529) HIGH Class Japan 

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

With the aid of the left multifunction steering wheel button group (S110), the right multifunction steering wheel button group (S111) and the multifunction display (A1p13) of the instrument cluster (A1), the following systems that are controlled via the MOST ring can be operated and system information can be displayed:

All the data is exchanged between the instrument cluster (A1) and the COMAND operating, display and control unit (A40/3) via the Media Oriented Systems Transport (MOST) and the CAN interior (CAN-B).

All button operations on the multifunction steering wheel are Voltage-coded steering column module (N80) read-in and placed on the CAN interior (CAN-B). The instrument cluster (A1) detects the coded messages and initiates, via the multifunction display (A1p13), the presentation of the system which is currently active or operated (audio, navigation, telephone) in the instrument cluster (A1).

In parallel with this, the audio gateway control module (N93/1) picks up the commands for controlling the functions within the MOST system, converts these into light pulses and with them actuates the necessary system components.

IMPORTANT The instrument cluster (A1) receives the current time from the COMAND operating, display and control unit (A40/3), since it is automatically received vie GPS and therefore does not have to be adjusted.

COMAND-specific operating and display options on the multifunction display 

Radio 

Readout:

Operation:

CD changer (A2/6) or MD player (mini disc drive) 

Readout:

Operation: 

Navigation system 

Readout:

Operation:

Telephone 

Readout:

Operation:

Audio gateway control module location/task/design/function GF82.62-P-3102TJ
Operating, display and control module, location/purpose/design/function GF82.85-P-3114TJ