Component description for COMAND controller unit

P82.60-9362-05

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 (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 (with CODE 531 (COMAND APS) (Map navigation with data from the 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 (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:

 Android Auto (Google)

 CarPlay (Apple)

In order to be able to use the smartphone apps, the smartphone must be connected to USB connector 2 (A90/5x2) of the multimedia connection unit (A90/5) and the integration standard selected through the telephone menu (unless automatic connection has been selected under "Options").

If a smartphone is connected and the integration standard CarPlay is activated, the COMAND controller unit is switched to a special operating mode ("Integration mode"), in which not all functions can be used. The following functions of the COMAND controller unit are not available if Android Auto or CarPlay is activated:

 Media player

 Navigation

 Voice control system

 Telephony (with CarPlay)

The "radio", "vehicle settings" and safety-relevant functions such as the emergency call function (with code 348 (Emergency call/assist system), with code 350 (eCall Europe emergency call system) or with code 351 (Emergency call system (HERMES))), can still be used.

With Android Auto, the following usage restrictions apply for the telephony: Calls can only be made through the connected smartphone. Telephony with code 379 (Telephone module with Bluetooth® (SAP)) is not possible.

If an integration standard is activated, the COMAND controller unit supports the smartphone applications as follows:

 Volume setting for all audio signals

 Forwarding control signals (e.g. from buttons on the COMAND controller unit, from Audio/COMAND control panel (A40/9) or from right multifunction steering wheel button group (S111))

 Forwarding of signals from the hands-free system microphone (B25/12) (e.g. for voice control or telephony)

 Audio outputs (e.g. for voice control or telephony) over the speaker system or forwarding of the signals to the sound system amplifier control unit (N40/3) (with code 810 (Sound system))

 Muting radio reception (mute function), e.g. for smartphone telephony

 Forwarding of position data (e.g. GPS signals (global navigation system), gyro sensor signals, wheel speed signals)

 Forwarding of generated video signals from the smartphone to the Audio/COMAND display

 Forwarding of status information for displaying in the instrument cluster (A1)

 If the smartphone is being used to make a call, with Android Auto, the COMAND controller unit receives and sends the telephone signals from and to the smartphone over the Bluetooth® antenna (A2/91), and with CarPlay over 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, e.g. the control signals from the Audio/COMAND control panel over the telematics CAN.

 The COMAND controller unit sends control signals to the Audio/COMAND display, for example, via telematics CAN.

 Via the interior CAN, the COMAND controller unit receives e.g. the signals of the left multifunction steering wheel button group (S110) and the right multifunction steering wheel button group from the instrument cluster, as well as from the electronic ignition lock control unit (N73) it receives the wheel speed signals from the Electronic Stability Program control unit (N30/4), among other things.

 Via the interior CAN, the COMAND controller unit sends e.g. navigation displays (with CODE 531 (COMAND APS)) to the instrument cluster.

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))

 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, AM and CL [ZV] antenna amplifier (A2/18) (input)

 FM2, DAB, and TV2 antenna amplifier (A2/138) (except model 117.3) (input)

 FM 2 and DAB antenna amplifier (A2/19) (model 117.3) (input)

 Hands-free system microphone (input)

 GPS antenna (A2/23) (with code 531 (COMAND APS), model 246, 242 except code 536 (SIRIUS satellite radio), model 117.9, 156, 176), on vehicles with code 348 (Emergency call/Assist system) over the Global Positioning System antenna splitter (A2/5)) (input)

 Multifunction antenna (A28/11) (with code 531 (COMAND APS), model 246, 242 with code 536 (SIRIUS satellite radio), model 117.3), on vehicles with code 348 (Emergency call/assist system) over the global positioning system antenna splitter) (input)

 Muting of the audio sources from the emergency call system control unit (N123/4) (with code 348 (Emergency call/assist system), except code 810 (Sound system)) (input)

 Muting of the audio sources from the telematics services communications module (N112/2) (with code 350 (eCall Europe emergency call system), except code 810 (Sound system)) (input)

 Muting of audio sources from the HERMES control unit (N112/9) (with code 360 (HERMES UMTS) or code 362 (HERMES LTE), except code 810 (Sound system)) (input)

 LVDS line (Low Voltage Differential Signal) from the tuner unit (with code 862 (TV preinstallation) or with code 865 (TV tuner)) (input)

 Reversing camera control unit (N66/2) (with code 218 (Reversing camera)) or 360° Camera control unit (N148) (with code P44 (Parking Package)) (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)

 LVDS line for video data to the Audio/COMAND display (output)

 Wake-up line for MOST (output)

 Audio output (speaker) (except CODE 810 (Sound system)) (output)

 USB line for the wake-up signal to the multimedia connection unit (output)

 Wake-up line for the mobile phone contact plate (X237/1) and the cellular telephone system antenna amplifier/compensator (A28/3) (as of 01.06.2016) (with code 386 (Comfort telephony)) (output)

 Wake-up- line to the telephone and stationary heater antenna changeover switch (A2/155) (with code 386 (Comfort telephony) and code B24 (Remote control for stationary heater), as of 01.06.2016)

 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 to HERMES control unit (with code 351 (Emergency call system (HERMES))) (output)

Structure

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

 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))

 SD card slot (Secure Digital)

 COMAND electrical fuse (A40/3f1) on rear of device

 GPS receiver

 Gyro sensor and 3D acceleration sensor

 Navigation processor and traffic data recorder