Component description for COMAND controller unit - GF82.85-P-3136FQB

MODEL 218.3 as of model year 2013 up to model year 2015 with CODE 512 (COMAND APS with DVD changer) 

MODEL 218.3 as of model year 2013 up to model year 2015 with CODE 527 (COMAND APS with single DVD drive (with navigation)) 

MODEL 218.3 as of model year 2013 up to model year 2015 with CODE 528 (COMAND with DVD changer) 

MODEL 218.9 up to model year 2015 with CODE 512 (COMAND APS with DVD changer) 

MODEL 218.9 up to model year 2015 with CODE 527 (COMAND APS with single DVD drive (with navigation)) 

MODEL 218.9 up to model year 2015 with CODE 528 (COMAND with DVD changer) 

Shown on model 218.3 with CODE 512 (COMAND APS with DVD changer) 

Location 

The COMAND controller unit is located in the center console.

Task 

The COMAND controller unit fulfills the following tasks:

• Central operating unit for entertainment and communication systems integrated into vehicle 
• Reading in the controls and input signals 
• Evaluation of input factors 
• Activation of output media and system components 

Central operating unit for entertainment and communication systems integrated into vehicle 

The COMAND controller unit provides the user with a structured and uniform user interface for the following system components:

• Audio
• Radio
• CD/DVD audio
• Secure Digital (SD) memory card
• Bluetooth® Audio
• USB electrical connector (X115) in stowage compartment (telephone compartment) under the armrest
• AUX connection electrical connector (X39/45) (up to 28.2.13) in stowage compartment (telephone compartment) beneath the armrest, for external audio equipment (except CODE 518 (Media Interface), up to 28.2.13)
• Video
• DVD video
• TV (with CODE 865 (TV tuner))
• Media interface for external audio or mass storage devices (with CODE 518 (Media Interface))
• Telephony
• Internet (except CODE 528 (COMAND incl. DVD changer))
• Navigation (map navigation with data from the internal hard disk) (except CODE 528 (COMAND incl. DVD changer))
• Voice control system (VCS [SBS]) (except CODE 528 (COMAND incl. DVD changer))

Reading in the controls and input signals 

The input factors are read in via the following connections:

• CAN 
• Media Oriented System Transport (MOST) 
• Direct line 
• Infrared interface (with CODE 867 (SPLITVIEW)) 

CAN 

• The COMAND controller unit is a telematics CAN (CAN A) subscriber.
• The COMAND controller unit is an interior CAN (CAN B) subscriber.

Media Oriented System Transport (MOST) 

The COMAND controller unit receives control and audio signals from the following control units:

• Sound system amplifier control unit (N40/3) (with CODE 810 (Sound system) or CODE 811 (Advanced sound system))
• Digital Audio Broadcasting control unit (N87/3) (with CODE 537 (Digital radio))
• Satellite Digital Audio Radio (SDAR) control unit (N87/5) (with CODE 536 (SIRIUS satellite radio))
• Media interface control unit (N125/1) (with CODE 518 (Media interface))
• TV digital tuner (A90/3) (with CODE 865 (TV tuner))

Direct line 

The COMAND controller unit has the following direct connections:

• Circuit 30g
• Circuit 31
• Wake-up for MOST
• AUX connection electrical connector (access beneath armrest) (except CODE 518 (Media Interface), up to 28.2.13)
• USB electrical connector (access beneath armrest)
• Audio muting of the emergency call system control unit (N123/4) (with CODE 348 (Emergency call/assist system))
• FM 1, AM, CL and KEYLESS-GO antenna amplifier (A2/18) (model 218.3)
• Rear window antenna amplifier 1 (A2/71) (model 218.9)
• FM 2 and DAB antenna amplifier (A2/19) (model 218.3)
• FM 2, DAB and TV antenna amplifier (A2/19) (model 218.9)
• Bluetooth antenna (A2/91)
• Multifunction antenna (A28/11)
• Hands-free system microphone (A67b1) (2 microphones)
• COMAND fan motor (M4/13) (diagnosis)
• Y brightness (luminance)/C color information (chrominance) (Y/C) lines from digital TV tuner (A90/3) (with CODE 865 (TV tuner))
• Y-lines from Night View Assist control unit (N101) (with CODE 610 (Night View Assist))
• Composite Video Baseband Signal (CVBS [FBAS]) from the reversing camera control unit (N66/2) (with CODE 218 (Reversing camera))
• CVBS [FBAS] signal from Media Interface electrical connector (with CODE 518 (Media Interface))
• CVBS [FBAS] signal with navigation retrofit (with CODE 355 (Preinstallation for navigation retrofit))
• Universal Serial Bus (USB) connection with the telematics services communications module (N112/2) (Real-time traffic data) (with CODE B54 (Live Traffic Information))
• VICS control unit (A2/37) (with CODE 498 (Japan version), Dealer Option)
• Dedicated Short-Range Communications control unit (A50/6) (with CODE 498 (Japan version), Dealer Option)

Infrared interface (with CODE 867 (SPLITVIEW)) 

• Control signals from the remote control (A8/7)

Evaluation of input factors 

The input values are processed in the COMAND controller unit.

Activation of output media and system components 

• Audio output (speakers) (except CODE 810 (Sound system) and CODE 811 (Advanced sound system))
• Audio output to headphones electrical connector (cabled) (X39/6) (with CODE 867 (SPLITVIEW))
• Audio signals via infrared interface to radio frequency headphones (H8/3) (cordless) (with CODE 867 (SPLITVIEW))
• Video output: Low voltage differential signaling (LVDS) line sends picture signals to the Audio/COMAND display (A40/8)
• COMAND fan motor (power supply and speed control)
• Microphone output to the emergency call system control unit (with CODE 348 (Emergency call/assist system))
• USB connection to telematics services communications module (position data) (with CODE B54 (Live Traffic Information))
• VICS control unit (switching voltage) (with CODE 498 (Japan version), Dealer Option)
• Dedicated Short-Range Communications control unit (with CODE 498 (Japan version), Dealer Option)
• Activation signal (with CODE 386 (Comfort telephony)) to the mobile phone contact plate (X237/1) (as of 1.3.13) or the Bluetooth module (A34/7) (up to 28.2.13)

When digital radio (DAB) (with CODE 537 (Digital radio)) is active, the COMAND controller unit transmits FM signals that are received in parallel to the Digital Audio Broadcasting control unit via the MOST.

Shown on COMAND controller unit with CODE 512 (COMAND APS with DVD changer) 

Body 

The following components are integrated in the COMAND controller unit:

• Single drive or disk changer
• Arithmetic unit
• Hard disk (except CODE 528 (COMAND incl. DVD changer))
• Amplifier (except CODE 810 (Sound system) or CODE 811 (Advanced sound system))
• Bluetooth® receiver for basic telephony
• Radio tuner
• High definition (HD) radio tuner (with CODE 512 (COMAND APS with DVD changer) and CODE 494 (USA version), with CODE 528 (COMAND incl. DVD changer))
• Kleer® radio interface (with CODE 867 (SPLITVIEW))

Function 

• Operating elements 
• DVD drive 
• Navigation and GPS control unit 
• Gyro sensor 
• Control unit for voice control system (VCS [SBS]) 
• Card reader for SD memory cards 

Operating elements 

The buttons on the operating panel of the COMAND controller unit are read in and relayed to the arithmetic unit. The button operations undergo further processing in the arithmetic unit and are forwarded via the MOST, the telematics CAN or the interior CAN to the other system components in the form of messages. If the ON button on the COMAND controller unit is pressed, the COMAND controller unit is switched on. The volume is regulated for each audio source set by turning the ON button. The buttons switch over to the audio source desired by the user.

In the event of system fault or system crash, pressing the "ON" button for t = 8 s will reboot the COMAND controller unit.

DVD drive 

With the aid of the integrated DVD drive, audio CDs/DVDs or video DVDs can be played and data (e.g. updates) from the navigation DVD can be stored on the internal hard disk.

Navigation and GPS control unit 

The navigation processor is integrated into the COMAND controller unit and calculates the location of the vehicle using the incoming antenna signals. It also calculates the vehicle's route after the destination has been entered.

Gyro sensor 

The gyro sensor determines vehicle direction changes. It is installed into the navigation processor. Calibration is not required.

Control unit for voice control system (VCS [SBS]) 

The voice commands are processed and evaluated in the COMAND controller unit. The voice outputs for the dialog with the user are generated in the COMAND controller unit.

Card reader for SD memory cards 

With the aid of the integrated card reader, data and audio files from an SD memory card can be stored on the hard disk (except CODE 528 (COMAND incl. DVD changer)) and subsequently retrieved again.

In vehicles as of 1.3.13 the card reader can also read SDXC cards.

Variants 

The COMAND controller unit is available in the following variants:

• With CODE 527 (COMAND APS with single DVD drive (with navigation)): with or without CODE 867 (SPLITVIEW); as of 1.3.13 or up to 28.2.13
• With CODE 512 (COMAND APS with DVD changer): with or without CODE 867 (SPLITVIEW); as of 1.3.13 or up to 28.2.13
• With CODE 528 (COMAND with DVD changer)

Diagnosis 

The COMAND controller unit is the diagnosis gateway for all MOST users. The diagnostic communication takes place between the COMAND controller unit and the front SAM control unit with fuse and relay module (N10/1) via the interior CAN. The diagnostic communication between the front SAM control unit with fuse and relay module and the diagnostic connector (X11/4) connected to the ISE tester takes place via the diagnostic CAN (CAN D).

Cockpit Management and Data System (COMAND) control unit wiring diagram	MODEL 218.3 as of model year 2013 up to model year 2015 with CODE 512 (COMAND APS with DVD changer) MODEL 218.3 as of model year 2013 up to model year 2015 with CODE 527 (COMAND APS with single DVD drive (with navigation)) MODEL 218.3 as of model year 2013 up to model year 2015 with CODE 528 (COMAND with DVD changer) MODEL 218.9 up to model year 2015 with CODE 512 (COMAND APS with DVD changer) MODEL 218.9 up to model year 2015 with CODE 527 (COMAND APS with single DVD drive (with navigation)) MODEL 218.9 up to model year 2015 with CODE 528 (COMAND with DVD changer)	PE82.85-P-2101-97XAD
	MODEL 218.3 as of model year 2013 up to model year 2015 with CODE 512 (COMAND APS with DVD changer) MODEL 218.3 as of model year 2013 up to model year 2015 with CODE 527 (COMAND APS with single DVD drive (with navigation)) MODEL 218.3 as of model year 2013 up to model year 2015 with CODE 528 (COMAND with DVD changer) MODEL 218.9 up to model year 2015 with CODE 512 (COMAND APS with DVD changer) MODEL 218.9 up to model year 2015 with CODE 527 (COMAND APS with single DVD drive (with navigation)) MODEL 218.9 up to model year 2015 with CODE 528 (COMAND with DVD changer)	PE82.85-P-2101-97XAE