COMAND operating, display and controller unit, component description - GF82.85-P-3134TXB

MODEL 211, 219 with CODE (512) COMAND APS with DVD changer with CODE (527) COMAND APS with single DVD drive (with navigation) except CODE (494) USA version except CODE (498) Japan version as of Model Year 09/AEJ 08

MODEL 211, 219 with CODE (512) COMAND APS with DVD changer with CODE (528) COMAND with DVD changer with CODE (494) USA version as of Model Year 09/AEJ 08

Shown on model 211.0

Fig 1: Locating COMAND Operating, Display And Controller Unit

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location

The COMAND operating, display and controller unit is in the center console.

Task

The COMAND operating, display and controller unit has the following tasks:

Provide the interface for the different functions
Reads in the controls and input signals
Evaluating input factors
Actuates output media

Reads in the controls and input signals

The input factors are read in via the following connections:

Direct lines
Controller Area Network (bus/CAN bus)
Media Oriented System Transport (MOST)

Discrete lines

The COMAND operating, display and controller unit has the following direct connections:

Circuit 30
Circuit 31
Wake-up for MOST (bidirectional)
AUX input (accessible in glove compartment), except code 518 Media interface
Telephone MUTE
Antenna input, frequency modulation (FM) 1 and FM2
Bluetooth antenna (A2/91)
Microphone SBS (B25/7)
E-net compensator (A28/3)
Roof antenna (A2/49)
UPCI [UHI] cell phone holder (Universal Portable Cell Phone Interface) (A34/15) (except code 494 USA version)
Emergency call system control unit (N123/4) with code 359 TELE AID emergency call system
Television (TV) input, except code 494 USA version

Data bus/CAN bus

The COMAND operating, display and controller unit is a subscriber of the class B Controller Area Network Bus (interior) (CAN-B)

MOST

Control and audio signals from the following control units:

Amplifier for sound system (N40/3) with code 810 Sound system
Digital Audio Broadcasting control unit (N87/3), with code 537 Digital radio and code 833 Great Britain version
SDAR control unit (N87/5), with code 536 SIRIUS satellite radio and with code 494 USA version
Media interface control unit (N125/1), with code 518 Media interface
TV combination tuner (analog/digital) (A90/1), with code 863 Digital/analog TV tuner

Evaluation of input factors

The input values are processed by the COMAND operating, display and controller unit.

Actuates output media

The following direct output signals are possible:

Audio OUT (speakers), except code 810 Sound system
External fan (power supply, speed control and diagnosis)
Power supply (GPS antenna (A2/49a2), FM amplifier, Bluetooth)

Front view and button assignments (shown with code 512 COMAND APS with DVD changer)

Fig 2: Front View And Button Assignment Of Code 512 COMAND APS With DVD Changer

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The COMAND operating, display and controller unit consists of the following components:

Control panels for controlling the audio, navigation and telematics functions
Digital Versatile Disk (DVD) drive, with code 527 COMAND APS with single DVD drive (with navigation system)
6-disk DVD changer, with code 528 COMAND including DVD changer or with code 512 COMAND APS with DVD changer
Central computer
Hard disk, except code 528 COMAND with DVD changer
Navigation processor, except code 528 COMAND with DVD changer
Audio amplifier, except code 810 Sound system
Voice control, except code 528 COMAND with DVD changer

Variants

Single CD/DVD with SD drive and High End navigation module (integrated hard disk), with code 527 COMAND APS with single DVD drive (with navigation system)
6-disk CD/DVD changer with SD drive with High End navigation module (integrated hard disk) and voice control system, with code 512 COMAND APS with DVD changer
6-disk CD/DVD changer with SD drive, with code 528 COMAND with DVD changer