Data exchange between operating unit and instrument cluster, function with code 527 - GF82.85-P-3004SKA
MODEL 171.4 with CODE (527) COMAND APS with single DVD drive (with navigation)
Operation of the COMAND operating, display and control module (A40/3) on the multifunction steering wheel
With the aid of the multifunction steering wheel as well as the upper multifunction display (A1p13) of the instrument cluster (A1) various systems can be operated via the media-oriented system transport (MOST) and information displayed to the systems.
These include:
- Audio systems (radio, CD drive)
- Telephone
- Navigation system
The entire data exchange between the instrument cluster (A1) and the COMAND operating, display and control module (A40/3) is performed via the local interconnect network (LIN) bus, the MOST and the controller area network bus class B (interior) (CAN-B).
All button operations on the multifunction steering wheel are read in voltage-coded by the steering column module (N80) via the LIN-bus and placed on the interior CAN interior bus (CAN-B). The instrument cluster (A1) recognizes the coded messages and initiates display of the momentarily activated or operated systems (Audio or telephone) via the upper multifunction display (A1p13) 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.
Operation and display possibilities on upper multifunction display (A1p13)
Radio
Readout:
- Set frequency band and possible memory location number
- Name (only with RDS) and frequency of station
- Information whether station search was accomplished with frequency or via stored station list
Operation:
- Volume
- Station search via station list or frequency, next station/ previous station
CD drive
Readout:
- Number of CD currently playing
- Number of CD track currently being played
Operation:
- Volume
- Select track (next/previous track)
Telephone
Readout:
- Entry request for PIN (personal identification number)
- Name of provider
- Vehicle outside transmit or receive range of telephone network
- Call number (if stored) or name of caller (if transmitted at the same time with two-way radio)
Operation:
- Volume
- Selection of name from stored phone directory, display of phone number and memory location number of party being called.
- Start making a call
- Accepting a call
- Dial repeat
- Reject or end call
| Audio gateway control module, location/purpose/design/function | GF82.62-P-3102SK |
| Operating, display and control module, location/purpose/design/function | GF82.85-P-3114SK |