Audio/COMAND Function - GF82.85-P-0014RFM
Model 253 (except 253.99)
as of model year 2020
Function requirements for Audio/COMAND, general
- Circuit 30t ON status
- 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.
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:
- Sound system amplifier control unit (N40/3) (with code 810 (Sound system))
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.
Some applications can also be shown 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 contains the following subfunctions, which are described separately:
- Audio mode function
- Speaker output function
- Mobile phone system function
- Internet connection function
- Voice control system function
- Front camera video recording function (with code 21U (Video recording function (dash cam)))
- TV mode function (with code 865 (TV tuner))
- Navigation mode function (with code 355 (Extended MBUX functions), with code 365 (Hard-disc navigation), with code U19 (Augmented reality))
- Video mode function (with code 549 (Connect 20 HIGH (NTG6)))
- Dedicated Short-Range Communications (DSRC), function (with code 498 (Japan version))
The head unit supports the following subfunctions, which are described separately:
- Emergency call system function (with code 362 (HERMES LTE))
- Telematics services function (with code 362 (HERMES LTE))
- Hybrid vehicle telematics services function (plug-in hybrid or model 253.99)
The head unit supports the following subfunctions, which are described below:
- Revitalization
- Gesture recognition system (with code 77B (contactless gesture control at the front))
- Integration of smart phones (with code 14U (Smartphone integration package))
Additional function requirements for revitalization
- Circuit 15R on
Revitalization
The revitalization functions should enhance the well-being and health of the vehicle occupants. Operation is through the head unit. The following revitalization functions are available:
- Seat kinetics
- Comfort control (with code PBP (ENERGIZING Package), or with code PBR (ENERGIZING Package Plus))
Additional function requirements for seat kinetics
- Electric seat adjustment
Seat kinetics
Seat kinetics use minor movements of the seat cushion and seat backrest on the driver's seat to increase or ease the strain on the driver's muscles and joints.
The lumbar support is also actuated cyclically.
Comfort control (with code PBP (ENERGIZING Package), or with code PBR (ENERGIZING Package Plus))
Comfort control combines several comfort functions and groups them into programs. The programs support the driver, for example, in monotonous driving situations with the aid of energizing programs and, in emotionally-stressful situations, with relaxing programs.
To implement the programs, comfort control actuates the following systems depending on the equipment installed and the selected program:
- Speaker system (music output)
- Audio/COMAND display (screen animations)
- Ambiance illumination
- Multicontour seat massage function
- Air conditioning system including fragrancing/ionization
- Armrest heating
- Steering wheel heater
- Seat climate control
Comfort control is performed by the head unit. With code 362 (HERMES LTE), the comfort control assistant is also available as a digital service. From the available data about the given driving situation (e.g. time, driving time, weather conditions) and, where applicable, fitness trackers linked to the Mercedes me connect user account, the comfort control assistant will initiate programming recommendations. Program recommendations can be shown through the head unit's notification center on the Audio/COMAND display.
Gesture recognition system (with code 77B (contactless gesture control at the front))
The hand motion sensor (B84/15) in the overhead control panel records the driver's and front passenger's hand movements using a camera, and converts the recognized gestures into operation signals.
The gesture detection system provides the following functions:
- Activation of functions, e.g. Favorites, through recognition of pre-determined hand gestures.
- Highlighting of displays on the Audio/COMAND display when a hand is moved in close proximity to the touchpad (A105), or the Audio/COMAND display.
- Showing functions in menus when a hand approaches the touchpad or the Audio/COMAND Display.
- Switches reading lamps on an off by recognition of a hand moving in close proximity to the inside rearview mirror or a gripping motion above the front passenger seat.
The gesture recognition system whether the driver or the front passenger carries out the hand movement.
The gesture recognition system can be switched on and off and configured via a menu in the head unit.
Integration of smart phones (with code 14U (Smartphone integration package))
The head unit enables the integration of smart phones. In order to ensure that the content is prepared in a vehicle-compatible way, only smartphone applications (apps) that have been developed for the following integration standards are supported:
- CarPlay (Apple) (with code 16U (CarPlay smartphone integration))
- Android Auto (Google) (with code 17U (Google Automotive Link smartphone integration))
- CarLife (Baidu) (with code 18U (Baidu CarLife smartphone integration))
To be able use the smartphone applications, the smartphone must be connected to USB port 2 (A90/5x2) (except code 897 (Wireless mobile phone charging), and except code 899 (Multifunction telephony)) of the multimedia connection unit (A90/5), or to the front center console USB port (X115/5) (with code 897 (Wireless mobile phone charging), or with code 899 (Multifunction telephony)), and the required integration standard must be selected. Automatic connection can also be selected in the settings.
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"). When the integration mode is used, the smartphone apps are shown on the Audio/COMAND display and they can be operated using the head unit controls.
When smartphone integration is active with a smartphone, there are the following restrictions:
- Only one route guidance may be active at a time. If the user starts route guidance on the smartphone and route guidance is active on the head unit, the head unit ends route guidance.
- It is not possible for the integrated smartphone to use the media mode through Bluetooth®.
Equipment variants
The following table depicts the special equipment and standard equipment (SE) in combination with the head unit, and the national versions for Europe, the USA (with code 494 USA version), and Japan (with code 498 (Japan version)).
| Function/code | Code 547 (Connect 20 Entry (NTG6)) (Europe) | Code 548 (Connect 20 MID (NTG6)) (Europe or with code 494 (USA version)) | Code 549 (Connect 20 HIGH (NTG6)) (Europe or with code 494 (USA version), or with code 498 (Japan version)) |
|---|---|---|---|
| Two USB ports in multimedia connection unit | SE | SE | SE |
| Media Interface, integrated into the head unit | SE | SE | SE |
| Video mode | Unavailable | Unavailable | SE |
| Voice control system | SE | SE | SE |
| Basic telephony | SE | SE | SE |
| Bluetooth® Audio | SE | SE | SE |
| Internet access | SE | SE | SE |
| WLAN (Wireless Local Area Network) hotspot | SE | SE | SE |
| Digital Owner's Manual | SE | SE | SE |
| Dedicated Short-Range Communications (DSRC) | Unavailable | Unavailable | SE (with code 498 (Japan version)) |
| Vehicle Information and Communication System (VICS) | Unavailable | Unavailable | SE (with code 498 (Japan version)) |
| Code 13U (EV services for plug-in vehicles) | SE with hybrid vehicle | SE with hybrid vehicle | SE with hybrid vehicle |
| Code 14U (Smartphone integration package) | Special equipment | SE (special equipment) (with code 494 (USA version)) Special equipment (except code 494 (USA version)) |
SE (special equipment) (with code 494 (USA version)) Special equipment (except code 494 (USA version)) |
| Code 21U (Video recording function (dash cam)) | Unavailable | Unavailable | Special equipment (Europe) |
| Code 77B (Front contactless gesture control) | Special equipment | Special equipment | Special equipment |
| Code 351 (Emergency call system (HERMES)) (limited regional availability) |
SE | SE | SE |
| Code 355 (Extended MBUX functions) | Unavailable | SE (with code 494 (USA version), or with code 498 (Japan version)) Special equipment (Europe) | SE (with code 494 (USA version), or with code 498 (Japan version)) Special equipment (Europe) |
| Code 362 (HERMES UMTS) (Limited regional availability) | SE | SE | SE |
| Code 365 (Hard-disc navigation) | Unavailable | Special equipment | Special equipment |
| Code 367 (Live Traffic Information) | Unavailable | Special equipment | Special equipment |
| Code 446 (Touchpad only) | SE | SE | SE |
| Code 518 (Media interface) (Adapter cable for the integrated Media Interface) | Special equipment | Special equipment (Europe) | Special equipment (Europe or with code 498 (Japan version)) |
| Code 536 (SIRIUS satellite radio) | Unavailable | Special equipment (with code 494 (USA version)) | Special equipment (with code 494 (USA version)) |
| Code 537 (Digital radio (DAB)) | Special equipment | Special equipment (Europe) | Special equipment (Europe) |
| Code 810 (Sound system) | Special equipment | Special equipment | Special equipment |
| Code 853 ("Midline" sound system) | Special equipment | Special equipment | Special equipment |
| code 865 (TV tuner) | Unavailable | Unavailable | SE (with code 498 (Japan version)) Special equipment (Europe) |
| Code 866 (Pre-installation for Rear Seat Entertainment system) | Special equipment | Special equipment | Special equipment |
| Code 897 (Wireless mobile phone charging) | Special equipment | Special equipment | Special equipment |
| Code 899 (Multifunction telephony) | Special equipment | Special equipment (Europe) | Special equipment (Europe) |
| Code B63 (Sporty engine sound) | Special equipment (engine specific) | Special equipment (engine specific) | Special equipment (engine specific) |
| Code U19 (Augmented reality) | Unavailable | Unavailable | Special equipment |
| Code U82 (USB charge socket in rear passenger compartment) | Special equipment | Special equipment (Europe) | Special equipment (Europe or with code 498 (Japan version)) |
| Audio/COMAND operating instructions | GF82.85-P-0014-11RFM | ||
| Engine sound, function | Model 253 (except 253.99) as of model year 2020 with code B63 (Sporty engine sound) |
GF82.60-P-0019RF | |
| Internet connection function | GF82.60-P-2040RFM | ||
| Front camera video recording, function | Model 253 (except 253.99) as of model year 2020 with code 21U (Video recording function (Dash cam)) |
GF82.60-P-2042RFM | |
| Speaker output function | GF82.62-P-4212RFN | ||
| Mobile phone system, function | GF82.70-P-0007RFM | ||
| Voice control, function | GF82.70-P-3020RFM | ||
| TV-mode, function | Model 253 (except 253.99) as of model year 2020 with code 865 (TV tuner) |
GF82.85-P-2011RFN | |
| Navigation mode, function | Model 253 (except 253.99) as of model year 2020 with code 355 (Extended MBUX functions) Model 253 (except 253.99) as of model year 2020 with code 365 (Hard drive navigation) Model 253 (except 253.99) as of model year 2020 with code U19 (Augmented reality) |
GF82.85-P-2012RFN | |
| Audio mode, function | GF82.85-P-2030RFN | ||
| Video mode, function | Model 253 (except 253.99) as of model year 2020 with code 549 (Connect 20 HIGH (NTG6)) |
GF82.85-P-2040RF | |
| Telematics services function | Model 253 (except 253.99) as of model year 2020 with code 362 (HERMES LTE) |
GF82.85-P-2060RF | |
| Hybrid vehicle telematics services, function | Model 253 (except 253.99) as of model year 2020 with code 362 (HERMES LTE) with code ME05 (HYBRID DRIVE 80KW VARIANT (INCLUDING PLUG-IN)) |
GF82.85-P-2061RF | |
| Dedicated Short-Range Communications (DSRC), function | Model 253 (except 253.99) as of model year 2020 with code 498 (Japanese version) Dealer option |
GF82.88-P-2001RFJ | |
| Emergency call system, function | Model 253 (except 253.99) as of model year 2020 with code 351 (Emergency call system (HERMES)) |
GF82.95-P-0004RFB |