GF82.85-P-3004TC Data Exchange Between the Operating Unit and Instrument Cluster, Function

GF82.85-P-3004TC Data Exchange Between The Operating Unit And Instrument Cluster, Function

15.03.07 The document has been updated to this date and will no longer be subject to revision.

Operation of the audio system at the multifunction steering wheel (MFL)
With the aid of the buttons on the MFL and the multifunction display (A1p13) of the instrument cluster (A1), various systems controlled via the Media Oriented System Transport (MOST) ring can be operated and information on the systems displayed. These include:
^ Audio systems such as radio, CD changer, etc.
^ Telephone

The entire data exchange between the instrument cluster (A1) and the radio (A2) takes place via the MOST and the Controller Area Network bus class B (interior) (CAN-B). All the button operations on the MFL are read in voltage-coded by the steering column module (N80) and placed on the Controller Area Network (data bus/CAN bus) (CAN).

The instrument cluster (A1) recognizes the coded messages and initiates the display of the system that is currently active or operated (audio, navigation, telephone) via the multifunction display (A1p13).
At the same time, the radio (A2) picks up the commands for controlling the functions (audio, navigation, telephone) within the MOST system. It converts them into light pulses and thus actuates the necessary system components.
The instrument cluster (A1) receives from the control panel the current time, since it is automatically received via the Global Positioning System (GPS) and thus does not have to be adjusted.

Operating and display options on the multifunction display Radio
Readout:
^ Set frequency band and where applicable memory location number (e.g. FM1)
^ Name (only for RDS station) and frequency of station
^ Information as to whether the station search takes place via the frequency or the stored station list (SP)

Operation:
^ Volume
^ Station search using station list or frequency "Next/previous station"

CD changer
Readout:
^ Number of CD currently playing
^ Number of CD track currently playing

Operation:
^ Volume
^ Select title next/previous title

Telephone
Readout:
^ Entry request for PIN (personal identification number)
^ Name of provider
^ Vehicle outside transmit or receive range of telephone network
^ Telephone number (if stored) or name of caller (if also transferred via radio).

Operation:
^ Volume
^ Selection of name from stored telephone book, display of telephone number and memory location number of party called
^ Start making a call
^ Accepting a call
^ Redial
^ Reject or end call