Component Description For COMAND Controller Unit - GF82.85-P-3136GWA

Model 463 

as of model year 2017 up to model year 2019 

with code EU4 (COMAND Online) 

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 
• 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))
• 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, e.g. MPEG, DIVX, WMV)
• Voice control system (VCS [SBS])
• Navigation (map navigation with data from internal hard disk) including extended functions
• TV (with code EM8 (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 

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 in the telephone menu. If a smartphone is connected and the integration standard Android Auto or CarPlay is activated, the COMAND controller unit is switched to a special operating mode ("integration mode") in which the following functions of the COMAND controller unit cannot be used:

• Media player
• Navigation
• Voice control system
• Telephony (with CarPlay)

The radio (AM and FM) functions, vehicle settings and safety-relevant functions such as, e.g. the emergency call function, (with code EK1 (HERMES - LTE communications module) or with code EM2 (HERMES - UMTS communications module)), 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 EG1 (Auto telephony) is not possible.

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

• Volume adaptation for all audio signals
• Forwarding of control signals (e.g. from buttons on the COMAND controller unit, from the Audio/COMAND control panel (A40/9), long press of the voice control system ON button (S111s4), pressing the accept/terminate phone call button (S111s3))
• Forwarding of signals from the hands-free system microphone (e.A67b1) g. for voice control or telephony)
• Audio outputs e.g. for voice control or telephony) over the speaker system or forwarding of signals to the sound system amplifier control unit (N40/3) (with code EU9 (Harman Kardon® Logic 7® surround sound system))
• Muting of the radio reception in the COMAND controller unit (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 video signals generated by the smartphone to the Audio/COMAND display
• Forwarding of status information for displaying in the instrument cluster (A1)

The smartphone applications themselves are not shown in the instrument cluster.

If the smartphone is being used to make a call, with Android Auto, the COMAND controller unit receives and transmits 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):

• Over the telematics CAN, the COMAND controller unit receives, e.g. the control signals from the Audio/COMAND control panel.
• Via the telematics CAN, the COMAND controller unit sends, e.g. control signals to the Audio/COMAND display.
• 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 (S111) from the instrument cluster as well as from the electronic ignition lock control unit (N73) it receives the rpm 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 to the instrument cluster or position data for the HERMES control unit (N112/9) (with code EK1 (HERMES - LTE communications module) or code EM2 (HERMES - UMTS communications module)) to the electronic ignition lock control unit.

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 EU9 (Harman Kardon® Logic 7® surround sound system))
• Tuner unit (A90/4) (with code EF6 (Digital radio (DAB)), code EM8 (TV tuner) or code ZU8 (USA national version))

Ethernet 

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

Direct line 

The COMAND controller unit has the following direct connections:

• Circuit 30g
• Circuit 31
• AM and FM 1 from AM and FM antenna amplifier (A2/33) (input)
• FM 2 from TV 2 antenna amplifier (A94/2) (input)
• Hands-free system microphone (input)
• GPS signals from the left front GPS antenna (A2/23) (input)
• Mute function signal from HERMES control unit (with code EK1 (HERMES - LTE communications module) or code EM2 (HERMES - UMTS communications module)) (input)
• Low Voltage Differential Signal (LVDS) line from tuner unit (with code EM8 (TV tuner)) (input)
• LVDS line from reversing camera (B84/3) (with code FR8 (Reversing 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 HERMES control unit (with code EM0 (Live Traffic capability (HERMES))) (input and output)
• DSRC control unit (A50/3) (with code ZJ1 (Version for Japan), 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 (speaker) (except code EU9 (Harman Kardon® Logic 7® surround sound system)) (output)
• Switch-on signal (Wake-up) for mobile phone contact plate (X237/1) and cellular telephone system antenna amplifier/compensator (A28/3) (with code EG1 (Auto telephony) or with code EP3 (Universal Telephony package)) (output)
• Microphone output to HERMES control unit (with code EK1 (HERMES - LTE communications module) or code EM2 (HERMES - UMTS communications module)) (output)

Structure 

The following components are integrated in the COMAND controller unit:

• Arithmetic unit
• Hard disk with searchable database for audio files (music server), including cover art, cover flow and Gracenote Database
• Operating elements
• Single DVD drive
• SD card slot
• 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 ZU8 (USA national version))
• 4-channel amplifier (except code EU9 (Harman Kardon® Logic 7® surround sound system))
• GPS receiver
• Gyro sensor and 3D acceleration sensor
• Navigation processor and traffic data recorder
• COMAND electrical fuse (A40/3f1) (at the rear panel)

Function 

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

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 and 3D acceleration sensor 

The gyro sensor 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	Model 463 as of model year 2017 up to model year 2019 with code EU4 (COMAND Online) except code ZJ1 (Version for Japan) except code ZU8 (National version for USA) Sheet 1	PE82.85-P-2101-97ZGF
		Model 463 as of model year 2017 up to model year 2019 with code EU4 (COMAND Online) except code ZJ1 (Version for Japan) except code ZU8 (National version for USA) Sheet 2	PE82.85-P-2101-97ZGG
		Model 463 as of model year 2017 up to model year 2019 with code EU4 (COMAND Online) with code ZJ1 (Version for Japan) except code ZU8 (National version for USA)	PE82.85-P-2101-97ZGI
		Model 463 as of model year 2017 up to model year 2019 with code EU4 (COMAND Online) with code ZU8 (National version for USA)	PE82.85-P-2101-97ZGH