Audio/COMAND function

GF82.85-P-0014RF

01.08.2019

Model	205
Model	253 (except 253.99)
	up to model year 2020
Model	253.99

Function requirements for Audio/COMAND, general

 Circuit 30g ON (model 205 up to model year 2019, model 253 (except 253.99))

 Circuit 30t ON (model 205 as of model year 2019, model 253.99)

 Transport mode not active

Audio/COMAND, general

The head unit (A26/17) is the central control unit for the entertainment and communication systems integrated into the vehicle.

On vehicles with code 814 (DVD changer) the DVD drive of the head unit is designed as a changer. In other words , up to six CDs or DVDs can be selected.

The head unit acts as a gateway. The head unit routes the signals from the user interface CAN (CAN HMI) to the components of the telematics CAN (CAN A) and the Media Oriented System Transport (MOST), thereby setting up the communications interface.

The head unit communicates with the following control units over MOST:

 Tuner unit (A90/4) (model 205 up to model year 2019, 253 (except 253.99) with code 536 (SIRIUS satellite radio) or code 537 (Digital radio (DAB)) or code 865 (TV tuner))

 Midline sound system amplifier control unit (N40/2) (model 205 as of model year 2019 with code 853 ("Midline" sound system)) or sound system amplifier control unit (N40/3) (with code 810 (Premium sound system))

 TV tuner control unit (N143) (model 205 as of model year 2019, model 253.99 with code 865 (TV tuner))

All the displays and menu representations for the Audio/COMAND display (A40/8) are generated by the head unit when a smartphone is not integrated.

 Various applications can also be displayed on the instrument cluster (A1), e.g. audio, telephone, navigation.

Via Ethernet, the head unit receives software uploads for all MOST subscribers from the diagnostic connector (X11/4) connected to the diagnostic unit.

The head unit includes the following partial functions, which are described in separate documents:

 Audio mode function

 Mobile phone system function

 Speaker output function

 Engine sound, function (with code B63 (Sporty engine sound))

 Disk changer, function (with CODE 531 (COMAND APS) and with CODE 814 (DVD changer))

 Video mode, function (with code 531 (COMAND APS))

 TV mode function (with code 865 (TV tuner))

 Internet connection function

 In-car hotspot function (with code 531 (COMAND APS))

 Voice control system function (with code 531 (COMAND APS))

 Navigation mode, function (with code 531 (COMAND APS))

 Navigation mode, function (with code 357 (Map navigation))

 Telematics services, function (with code 360 (HERMES UMTS) or with code 362 (HERMES LTE))

 Dedicated Short-Range Communications (DSRC) function (with CODE 498 (Japan version), dealer option)

The head unit supports the following partial functions, which are described in separate documents:

 Emergency call system function with code 347 (Mercedes-Benz emergency call system) or with code 350 (eCall Europe emergency call system), with code 348 (Emergency call/assist system), with code 351 (Emergency call system (HERMES) or code 362 (HERMES LTE)

 Additional telematics services function (with code 348 (Emergency call/Assist system) or code 05U (Remote Online))

 Hybrid vehicles telematics services function (for hybrid vehicles (Plug-in) with code 348 (Emergency call/Assist system) on model 205.047, with code B57 (COM MODULE battery level) or code 360 (HERMES UMTS) or code 362 (HERMES LTE))

 Telematics services, function (with code 360 (HERMES UMTS) or with code 362 (HERMES LTE))

The head unit supports the following function, which is described below:

 Integration of smartphones (with code 14U (Smartphone integration package))

Integration of smartphones (model 205 as of model year 2019, model 253 with code 14U (Smartphone integration package))

The head unit enables the integration of smartphones. In order to ensure that the content is prepared so as to be compatible with the vehicle, only smartphone applications (apps) that have been developed for the following integration standards are supported:

 Android Auto (Google)

 CarPlay (Apple)

To use the smartphone applications, the smartphone must be connected to USB port 1 (A90/5x1) (with code 506 (Audio 20 NTG 5.5 radio) or code 531 (COMAND APS) and code 897 (Wireless mobile phone charging) or code 899 (Multifunction telephony)) or to USB port 2 (A90/5x2) (with code 506 (Audio 20 NTG 5.5 radio) or code 531 (COMAND APS)) of multimedia connection unit (A90/5) or to front center console USB port (X115/5) (with code 899 (Multifunction telephony)) and the integration standard selected in the "Connect" menu. If automatic connection was selected under "Settings", activation via the menu is not applicable.

 With the Android Auto integration standard, a Bluetooth® connection between the smartphone and the head unit is required as well as the connection via USB (Universal Serial Bus) (the connection is established automatically).

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

 Media player

 Navigation (equipment dependent)

 Voice control system (VCS [SBS])

 Telephony (with CarPlay)

The radio functions, vehicle settings and safety-relevant functions such as, e.g. the emergency call function (with code 360 (HERMES UMTS) or code 362 (HERMES LTE)) can still be used.

With Android Auto, the following usage restrictions apply for the telephony: Calls can only be made through the connected smartphone.

If an integration standard is activated, the head unit supports the smartphone apps in the following manner:

 Volume adaptation for all audio signals

 Forwarding of operation signals (e.g. from the Audio/COMAND control panel (A40/9) (except code 446 (Touchpad only)), from the touchpad (A105) (with code 446 (Touchpad only) or with code 448 (Touchpad)), from voice control switch ON and Favorites (S163/2s17) (long press) or from the accept/terminate phone call switch (S163/2s15))

 Forwarding of signals from the driver hands-free system microphone (B25/20)

 Audio outputs (for example for voice control or telephony) via the speaker system or forwarding signals to the sound system amplifier control unit (with code 810 (Premium sound system)) or to the midline sound system amplifier control unit (with code 853 ("Midline" sound system))via MOST

 Mute function (muting of audio sources) in the head unit, 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

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

If the smartphone is used for making a call, the head unit transmits and receives the telephone signals from and to the smartphone with Android Auto via the Bluetooth® antenna (A2/91) and with CarPlay via the USB connection (Universal Serial Bus) to the multimedia connection unit.

Audio/COMAND equipment variants

The following table depicts the equipment options in combination with the head unit.

Function/code	With code 520 (Audio 20 USB)	With code 522 (Audio 20 radio)	With code 506 (Audio 20 NTG 5.5 radio)	With code 531 (COMAND APS) and code 494 (USA version)	With code 531 (COMAND APS) and code 498 (Japan version)	With code 531 (COMAND APS), except code 494 (USA version) and except code 498 (Japan version)
Two USB connectors (in the multimedia connection unit)	Standard	Standard	Standard	Standard	Standard	Standard
Media Interface, integrated into the head unit	Standard	Standard	Standard	Standard	Standard	Standard
Secure Digital (SD) card slot (in the multimedia connection unit (A90/5))	Unavailable	Special equipment (with code 355 (Preinstallation for navigation retrofit))	Standard	Standard	Standard	Standard
Single-CD drive	Unavailable	Standard	Unavailable	Unavailable	Unavailable	Unavailable
Picture viewer	Unavailable	Unavailable	Standard	Standard	Standard	Standard
Video mode	Unavailable	Unavailable	Unavailable	Standard	Standard	Standard
Voice control system	Unavailable	Special equipment (with code 357 (Map navigation))	Special equipment (with code 357 (Map navigation))	Standard	Standard	Standard
Navigation	Unavailable	Special equipment (with code 357 (Map navigation))	Special equipment (with code 357 (Map navigation))	Standard	Standard	Standard
Basic telephony	Standard	Standard	Standard	Standard	Standard	Standard
Bluetooth® Audio	Standard	Standard	Standard	Standard	Standard	Standard
Internet access	Standard	Standard	Standard	Standard	Standard	Standard
Wireless Local Area Network (WiFi hotspot)	Unavailable	Unavailable	Unavailable	Standard	Standard	Standard
Integration of smartphones (via Android Auto and CarPlay)	Unavailable	Unavailable	Special equipment	Standard	Standard	Standard
Digital Owner's Manual	Standard	Standard	Standard	Standard	Standard	Standard
Dedicated Short-Range Communications (DSRC)	Unavailable	Unavailable	Unavailable	Unavailable	Dealer option	Unavailable
Vehicle Information and Communication System (VICS)	Unavailable	Unavailable	Unavailable	Unavailable	Dealer option	Unavailable
Code 14U (Smartphone integration package) (integration of smartphones via Android Auto or CarPlay)	Unavailable	Unavailable	Special equipment	Series (model 205 as of model year 2019, model 253.99) Special equipment (model 253 (except 253.99) up to model year 2020)	Series (model 205 as of model year 2019, model 253.99) Special equipment (model 253 (except 253.99) up to model year 2020)	Series (model 253.99) Special equipment (model 205, 253 (except 253.99))
Code 351 (Emergency call system (HERMES)) (limited regional availability)	Series (where regionally available)	Series (where regionally available)	Standard	Standard	Standard	Series (where regionally available)
Code 355 (Preinstallation for navigation retrofit)	Unavailable	Special equipment	Special equipment	Unavailable	Unavailable	Unavailable
Code 357 (Card navigation)	Unavailable	Special equipment	Special equipment	Unavailable	Unavailable	Unavailable
Code 360 (HERMES UMTS) (limited regional availability)	Series (where regionally available)	Standard (where regionally available) (except code 494 (USA version))	Unavailable	Unavailable	Unavailable	Unavailable
Code 362 (HERMES LTE) (limited regional availability)	Special equipment (where regionally available)	Standard (with code 494 (USA version)) Special equipment (where regionally available) (except code 494 (USA version))	Standard	Standard	Standard	Standard
Code 367 (Live Traffic Information)	Unavailable	Special equipment (where regionally available) (with code 357 (Map navigation))	Series (where regionally available)	Series (where regionally available)	Unavailable	Series (where regionally available)
Code 379 (Telephone module with Bluetooth® (SAP profile))	Special equipment	Special equipment (except code 494 (USA version))	Unavailable	Unavailable	Unavailable	Unavailable
Code 386 (Comfort telephony)	Special equipment	Special equipment (except code 494 (USA version))	Unavailable	Unavailable	Unavailable	Unavailable
Touchpad (model 205 as of 01.06.2015 up to model year 2019, model 253 (except 253.99) as of 01.06.2015)	Unavailable	Standard (with code 494 (USA version))	Unavailable	Standard	Standard	Special equipment with code 448 (Touchpad)
Touchpad (up to 31.05.2015)	Unavailable	Special equipment (except CODE 494 (USA version) and except CODE 498 (Japan version))	Unavailable	Standard	Standard	Standard
Touchpad (model 205 as of model year 2019, model 253.99 with code 446 (Touchpad only))	Unavailable	Unavailable	Standard (with code 494 (USA version)) Special equipment (except code 494 (USA version))	Series (automatic transmission)	Series (automatic transmission)	Series (automatic transmission)
Touchpad (model 205 as of model year 2019 with code 448 (Touchpad))	Unavailable	Unavailable	Standard	Special equipment	Special equipment	Special equipment
Code 518 (Media interface) (Adapter cable for the integrated Media Interface)	Special equipment	Special equipment (except code 494 (USA version))	Special equipment	Special equipment	Special equipment	Special equipment
Code 536 (SIRIUS satellite radio)	Unavailable	Special equipment (with code 494 (USA version))	Special equipment (with code 494 (USA version))	Standard	Unavailable	Unavailable
Code 537 (Digital radio (DAB))	Unavailable	Special equipment (except code 494 (USA version))	Special equipment (except code 494 (USA version))	Unavailable	Unavailable	Standard
Code 810 (Premium sound system)	Unavailable	Special equipment	Special equipment	Special equipment	Special equipment	Special equipment
Code 853 ("Midline" sound system)	Unavailable	Unavailable	Special equipment	Special equipment	Special equipment	Special equipment
code 865 (TV tuner)	Unavailable	Unavailable	Unavailable	Unavailable	Standard	Special equipment
Code 866 (Preinstallation for Rear Seat Entertainment system)	Special equipment	Special equipment	Special equipment	Special equipment	Special equipment	Special equipment
Code 897 (Wireless mobile phone charging)	Unavailable	Unavailable	Special equipment	Special equipment	Special equipment	Special equipment
Code 899 (Multifunction telephony)	Unavailable	Unavailable	Special equipment (except code 494 (USA version))	Unavailable	Unavailable	Special equipment
Code B54 (Live Traffic Information)	Unavailable	Special equipment as of 01.06.2015 (except code 494 (USA version) and except code 498 (Japan version))	Unavailable	Special equipment	Special equipment	Standard
Model 205, 253 up to model year 2017 with code B57 (COM MODULE battery level)	Standard	Standard (except CODE 494 (USA version) and except CODE 498 (Japan version))	Unavailable	Special equipment	Special equipment	Unavailable
Code B63(Sporty engine sound)	Unavailable	Unavailable	Special equipment (engine specific)	Special equipment (engine specific)	Special equipment (engine specific)	Special equipment (engine specific)

Internet connection function		GF82.60-P-2040RF
InCar Hotspot, function	Model 205 with code 531 (COMAND APS) Model 253 (except 253.99) up to model year 2020 with code 531 (COMAND APS) Model 253.99 with code 531 (COMAND APS)	GF82.60-P-0011RF
Engine sound, function	Model 205 with code B63 (Sporty engine sound) Model 253 (except 253.99) up to model year 2020 with code B63 (Sporty engine sound) Model 253.99 with code B63 (Sporty engine sound)	GF82.60-P-0019RF
Navigation, function	Model 205 up to model year 2019 with code 357 (Map navigation) Model 253 (except 253.99) up to model year 2020 with code 357 (Map navigation)	GF82.61-P-2003RF
	Model 205 as of model year 2019 with code 357 (Map navigation)	GF82.61-P-2003RFM
Speaker output function	Model 205 up to model year 2019 Model 253 (except 253.99) up to model year 2020	GF82.62-P-4212RF
	Model 205 as of model year 2019 Model 253.99	GF82.62-P-4212RFM
Mobile phone system, function	Model 205 up to model year 2019 Model 253 (except 253.99) up to model year 2020	GF82.70-P-0007RF
	Model 205 as of model year 2019 Model 253.99	GF82.70-P-0007RFM
Voice control, function	Model 205 as of model year 2019 Model 205 up to model year 2019 with code 531 (COMAND APS) Model 253 (except 253.99) up to model year 2019 with code 531 (COMAND APS) Model 253.99	GF82.70-P-3020RF
TV-mode, function	Model 205 up to model year 2019 with code 865 (digital TV) Model 253 (except 253.99) up to model year 2020 with code 865 (digital TV)	GF82.85-P-2011RF
	Model 205 as of model year 2019 with code 865 (digital TV) Model 253.99 with code 865 (digital TV)	GF82.85-P-2011RFM
Navigation mode, function	Model 205 up to model year 2019 with code 531 (COMAND APS) Model 253 (except 253.99) up to model year 2020 with code 531 (COMAND APS)	GF82.85-P-2012RF
	Model 205 as of model year 2019 with code 531 (COMAND APS) Model 253.99 with code 531 (COMAND APS)	GF82.85-P-2012RFM
Audio mode, function	Model 205 up to model year 2019 Model 253 (except 253.99) up to model year 2020	GF82.85-P-2030RF
	Model 205 as of model year 2019 Model 253.99	GF82.85-P-2030RFM
Disk changer function	Model 205 with code 531 (COMAND APS) with code 814 (DVD changer) Model 253 (except 253.99) up to model year 2020 with code 531 (COMAND APS) with code 814 (DVD changer) Model 253.99 with code 531 (COMAND APS) with code 814 (DVD changer)	GF82.85-P-2032RF
Video mode, function	Model 205 with code 531 (COMAND APS) Model 253 (except 253.99) up to model year 2020 with code 531 (COMAND APS) Model 253.99 with code 531 (COMAND APS)	GF82.85-P-2040RF
Telematics services function	Model 205, 253 (except 253.99) up to model year 2019 with code 360 (HERMES UMTS) Model 205 with code 362 (HERMES communications module LTE) Model 253 (except 253.99) up to model year 2020 with code 362 (HERMES communications module LTE) Model 253.99 with code 362 (HERMES communications module LTE)	GF82.85-P-2060RF
Hybrid vehicle telematics services, function	Plug-in hybrid or model 253.99	GF82.85-P-2061RF
Dedicated Short-Range Communications (DSRC), function	Model 205 with code 498 (Japanese version) Dealer optionModel 253 (except 253.99) up to model year 2020 with code 498 (Japanese version) Dealer optionModel 253.99 with code 498 (Japanese version)Dealer option	GF82.88-P-2001RFJ
Emergency call system, function	Model 205 with code 347 (Mercedes-Benz emergency call system) except code 348 (Emergency call/assistant system) except code 351 (Emergency call system (HERMES))	GF82.95-P-0004RF
	Model 205 up to model year 2017 with code 350 (Ecall emergency call system, Europe) except code 347 (Mercedes-Benz emergency call system) except code 348 (Emergency call/assistant system) Model 253 up to model year 2017 with code 350 (Ecall emergency call system, Europe) except code 348 (Emergency call/assistant system)	GF82.95-P-0004RFA
	Model 205 up to model year 2017 with code 348 (Emergency call/assistant system) except code 347 (Mercedes-Benz emergency call system) Model 253 up to model year 2017 with code 348 (Emergency call/assistant system)	GF82.95-P-0004RFU
	Model 205, 253.99 as of model year 2017 with code 351 (Emergency call system (HERMES)) Model 253 (except 253.99) as of model year 2017 up to model year 2020 with code 351 (Emergency call system (HERMES))	GF82.95-P-0004RFB
Additional telematics services function	Model 205 with code 347 (Mercedes-Benz emergency call system) except code 348 (Emergency call/assistant system) except code 350 (Ecall emergency call system, Europe)	GF82.95-P-2025RF
	Model 205 with code 05U (Remote Online) except code 347 (Mercedes-Benz emergency call system) except code 348 (Emergency call/assistant system) Model 205 with code 06U (Mercedes connect me standard services) except code 347 (Mercedes-Benz emergency call system) except code 348 (Emergency call/assistant system) Model 253 (except 253.99) up to model year 2020 with code 05U (Remote Online) except code 348 (Emergency call/assistant system) Model 253 (except 253.99) up to model year 2020 with code 06U (Mercedes connect me standard services) except code 348 (Emergency call/assistant system) Model 253.99 with code 05U (Remote Online) except code 348 (Emergency call/assistant system) Model 253.99 with code 06U (Mercedes connect me standard services) except code 348 (Emergency call/assistant system)	GF82.95-P-2025RFA
	Model 205 with code 348 (Emergency call/assistant system)	GF82.95-P-2025RFU
Overview of system components, telematics		GF82.85-P-9999RF

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