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

MODEL 166 as of model year 2016 with CODE 531 (COMAND APS) 

MODEL 292 with CODE 531 (COMAND APS) 

Shown on model 292 

Location 

The COMAND controller unit is located in the center console.

Tasks 

The COMAND controller unit fulfills the following tasks:

• Central control unit for the entertainment and communication systems integrated into the vehicle 
• Integration of smartphones (model 166 as of 14.12.2015, model 292 as of 01.12.2015) 
• Reading in of input signals as well as actuation of output media and system components 

Central control unit for the entertainment and communication systems integrated into the vehicle 

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

• Telephony
• Internet (including WLAN hotspot (Wireless Local Area Network))
• Voice control system (VCS [SBS])
• Navigation (map navigation with data from internal hard disk) including extended functions
• Digital operator's manual (interactive)
• Audio (e.g. radio, CD/DVD, Bluetooth® audio, SD card (Secure Digital), Universal Serial Bus (USB))
• Video (in high resolution or frequently used video formats such as MPEG, DIVX, WMV)
• TV (with CODE 865 (TV tuner))

The user interface is shown on the Audio/COMAND display (A40/8).

Using the "Vehicle functions" menu, equipment-dependent contents and functions of additional systems (e.g. climate control, seat adjustments) can be shown and controlled on the Audio/COMAND display.

Integration of smartphones (model 166 as of 14.12.2015, model 292 as of 01.12.2015) 

The COMAND controller unit allows for the integration of smartphones. In order to ensure that the content is prepared in a vehicle-related way, only apps that have been developed for the following integration standards are supported:

• Automotive Link (Google)
• CarPlay (Apple)
• MirrorLink 1.1 (Car Connectivity Consortium)

In order to use the smartphone applications, the smartphone must be connected via Universal Serial Bus (USB) to the multimedia connection unit (A90/5) and integration standard is selected via a menu of the COMAND controller unit. If a smartphone is connected and an integration standard is active, the COMAND controller unit is brought into a special operating mode ("integration mode"), in which the media player, the telephone and navigation of the COMAND controller unit cannot be used. The "radio", "vehicle settings" and safety relevant functions, such as emergency call function (with CODE 348 (Emergency call/assist system) or with CODE 350 (Ecall Europe emergency call system)), can still be used.

In integration mode, the COMAND controller unit supports smartphone applications in the following ways:

• Forwarding of control signals (e.g. from the Audio/COMAND control panel (A40/9), from the touchpad (A105), from the + and - button, setting specific functions and volume control (S111s1), from the accept/end phone call button (S111s3))
• Forwarding of signals from the hands-free system microphone group (A67b1) (e.g. for voice control or telephony)
• Audio outputs (e.g. for voice control or telephony) via the speaker system or forwarding of the signals to the sound system amplifier control unit (N40/3) (with CODE 810 (Sound system) or CODE 811 (Advanced sound system))
• Muting of the radio reception in the COMAND controller unit, e.g. for smartphone telephony
• Forwarding of position data (e.g. GPS signals, gyro sensor signals, wheel speed signals)
• Forwarding of generated video signals from the smartphone to the Audio/COMAND display

No smartphone applications are shown in the instrument cluster (A1).

If the smartphone is being used to make a call, the audio equipment receives and transmits the telephone signals from and to the smartphone using Automotive Link and MirrorLink 1.1 via the Bluetooth® antenna (A2/91), and with CarPlay via the USB connection to the multimedia connection unit.

Reading in of input signals as well as actuation of output media and system components 

The COMAND controller unit sends and receives signals via the following connections:

• CAN 
• Media Oriented System Transport (MOST) 
• Ethernet 
• Direct line 

CAN 

The COMAND controller unit is a subscriber of the telematics CAN (CAN A) and the interior CAN (CAN B):

• The COMAND controller unit receives the control signals from the Audio/COMAND control panel and from the touchpad, for example, via telematics CAN.
• The COMAND controller unit sends control signals to the Audio/COMAND display, for example, via telematics CAN.
• From the instrument cluster the COMAND controller unit receives the signals of the left multifunction steering wheel button group (S110) and the right multifunction steering wheel button group (S111), for example, via interior CAN, as well as from the electronic ignition lock control unit (N73) the rpm signals from the Electronic Stability Program control unit (N30/4) among other things.
• Via interior CAN, the COMAND controller unit sends navigation displays to the instrument cluster for example.

Media Oriented System Transport (MOST) 

The COMAND controller unit exchanges data over MOST with the following control units:

• Sound system amplifier control unit (with CODE 810 (Sound system) or with CODE 811 (Advanced sound system))
• Tuner unit (A90/4) (with CODE 536 (SIRIUS satellite radio), with CODE 537 (Digital radio (DAB)) or with CODE 865 (TV tuner))

Ethernet 

The COMAND controller unit is connected to the diagnostic connector (X11/4) via the Ethernet.

Direct line 

The COMAND controller unit has the following direct connections:

• Circuit 30g
• Circuit 31
• FM 1, AM, CL [ZV] and KEYLESS-GO antenna amplifier (A2/18) (input)
• FM 2 and DAB antenna amplifier (A2/19) (model 292) or FM 2, DAB and TV antenna amplifier (A2/19) (model 166) (input)
• Hands-free system microphone group (input)
• Multifunction antenna (A28/11), in vehicles with CODE 348 (Emergency call/assist system) via the global positioning system antenna splitter (A2/5) (input)
• Audio muting from the emergency call system control unit (N123/4) (with CODE 348 (Emergency call/Assist system), except CODE 810 (Sound system) and except CODE 811 (Advanced Sound System)) (input)
• Audio muting from telematics services communications module (N112/2) (with CODE 350 (Ecall Europe emergency call system) or with CODE 06U (Mercedes connect me basic services), except CODE 810 (Sound system) and except CODE 811 (Advanced sound system)) (input)
• Low voltage differential signal line (LVDS) from tuner unit (with CODE 865 (TV tuner)) (input)
• Reversing camera (B84/3) (with CODE 218 (Reversing camera)) or 360° camera control unit (N148) (with CODE 501 (360° camera)) (input)
• Bluetooth® antenna (input and output)
• WLAN antenna (A2/83) (input and output)
• Multimedia connection unit (input and output)
• COMAND fan motor (M4/13) (input and output)
• USB line to the telematics services communications module (with CODE B54 (Live Traffic Information)) (input and output)
• Dedicated Short-Range Communications control unit (A50/6) (with CODE 498 (Japan version), dealer option) (input and output)
• Vehicle Information and Communication System (VICS) control unit (A2/37) (with CODE 498 (Japan version), dealer option) (input and output)
• Wake-up line for MOST (output)
• LVDS line for video data to the Audio/COMAND display (output)
• Audio output (speakers) (except CODE 810 (Sound system) and except CODE 811 (Advanced sound system)) (output)
• Switch-on signal (Wake-up) for mobile phone contact plate (X237/1) (with CODE 386 (Comfort telephony)) and cellular telephone system antenna amplifier/compensator (A28/3) (with CODE 386 (Comfort telephony)) (output)
• Microphone output to emergency call system control unit (with CODE 348 (Emergency call/assist system)) or to telematics services communications module (with CODE 350 (Ecall Europe emergency call system) or with CODE 06U (Mercedes connect me basic services)) (output)

Body 

The following components are integrated in the COMAND controller unit:

• Arithmetic unit
• DVD changer (with CODE 814 (DVD changer)) or single DVD drive (with CODE 815 (Single DVD drive))
• Hard disk with searchable database for audio files (music server), including cover art, cover flow and Gracenote Database
• SD card reader
• Bluetooth® receiver
• WLAN receiver
• Radio tuner for AM reception, FM phase diversity and separate FM tuner function for data services, e.g. traffic messages
• HD radio tuner (High Definition) (with CODE 494 (USA version))
• 4-channel amplifier (except CODE 810 (Sound system) or CODE 811 (Advanced sound system))
• GPS receiver (Global Positioning System)
• Gyro sensor (turn rate sensor) and 3D acceleration sensor
• Navigation processor and traffic data recorder
• COMAND controller unit electrical fuse (A40/3f1) (at the rear panel)

Function 

• DVD drive 
• Navigation and GPS control unit 
• Gyro sensor (turn rate sensor) and 3D acceleration sensor 
• Control unit for voice control system (VCS [SBS]) 

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 a 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 (turn rate sensor) and 3D acceleration sensor 

The gyrosensor and the 3D acceleration sensor are used to determine vehicle direction changes. They are installed in the navigation processor. Calibration is not required.

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

The COMAND controller unit processes the voice commands, evaluates them and creates the voice output for the dialog with the user.

Cockpit Management and Data System (COMAND) control unit wiring diagram

PE82.85-P-2101-97NBA