P82.85-A075-79
Shown on model 222 |
A1 | Instrument cluster | A40/8 | Audio/COMAND display | N112/9 | HERMES control unit (with code 360 (HERMES UMTS) or code 362 (HERMES LTE)) | ||
A2/18 | FM, AM, CL, DAB and KEYLESS-GO antenna amplifier | A40/9 | Audio/COMAND control panel (with code 448 (Touchpad)) | N135 | Steering wheel electronics | ||
A2/32 | Rear window antenna | A40/9s10 | Navigation button (with code 448 (Touchpad)) | S163/2 | Head unit multifunction steering wheel button group | ||
A2/37 | Vehicle Information and Communication System (VICS) control unit (with code 498 (Japan version), dealer option) | A40/9s13 | Volume control button (with code 448 (Touchpad)) | S163/2s16 | Volume adjustment switch | ||
A2/54 | Left emergency call system antenna (with code 360 (HERMES UMTS), with code 362 (HERMES LTE) or with code 503 (Pre-installation for Remote Parking Pilot) and code 536 (SIRIUS satellite radio)) | A50/6 | Dedicated Short-Range Communications control unit (with code 498 (Japan version), Dealer Option) | CAN A | Telematics CAN | ||
A2/55 | Right emergency call system antenna (with code 362 (HERMES LTE) or with code 503 (Pre-installation for Remote Parking Pilot) or with code 503 (Pre-installation for Remote Parking Pilot) and code 536 (SIRIUS satellite radio)) | A90/5 | Multimedia connection unit | CAN D | Diagnostic CAN | ||
A2/83 | WLAN antenna | A105 | Touchpad (with code 446 (Touchpad only) or code 448 (Touchpad)) | CAN HMI | User interface CAN | ||
A2/94 | DSRC antenna (with code 498 (Japan version), dealer option) | B25/20 | Driver hands-free system microphone | CAN LR | Steering wheel CAN | ||
A2/109 | Telephone antenna splitter | N30/4 | Electronic Stability Program control unit | Flex E | Chassis FlexRay | ||
A2/138 | FM2, DAB and TV2 antenna amplifier | N40/3 | Sound system amplifier control unit (with code 810 (Sound system)) | MOST | Media Oriented System Transport | ||
A8/7 | Remote control (with code 864 (Rear Seat Entertainment system)) | N40/7 | Advanced Sound System amplifier control unit (with CODE 811 (Advanced Sound System)) | LIN A3 | LCP LIN | ||
A26/17 | Head unit | N72 | Lower control panel (with code 446 (Touchpad only)) | HSVL | High-speed video link | ||
A26/18 | Rear Seat Entertainment system controller unit (with code 864 (Rear Seat Entertainment System)) | N72s10 | Navigation button | A | Touchpad (with code 446 (Touchpad only)) | ||
A28/11 | Multifunction antenna | N72s13 | Volume control button | B | Touchpad (with code 448 (Touchpad)) | ||
A40/5 | Left rear display (with code 864 (Rear Seat Entertainment system)) | N73 | Electronic ignition switch control unit | C | With code 362 (HERMES LTE) up to 31.05.2019 or except code 362 (HERMES LTE) | ||
A40/6 | Right rear display (with code 864 (Rear Seat Entertainment system)) | N80 | Steering column module control unit |
P82.85-A074-79
Shown: model 217 |
A1 | Instrument cluster | A40/9 | Audio/COMAND control panel (with code 448 (Touchpad)) | N135 | Steering wheel electronics | ||
A2/18 | FM, AM, CL, DAB and KEYLESS-GO antenna amplifier | A40/9s10 | Navigation button (with code 448 (Touchpad)) | S163/2 | Head unit multifunction steering wheel button group | ||
A2/25 | Emergency call system antenna splitter (with code 362 (HERMES LTE)) | A40/9s13 | Volume control button (with code 448 (Touchpad)) | S163/2s16 | Volume adjustment switch | ||
A2/32 | Rear window antenna (model 217.3) | A50/6 | Dedicated Short-Range Communications control unit (with code 498 (Japan version), Dealer Option) | CAN A | Telematics CAN | ||
A2/37 | Vehicle Information and Communication System (VICS) control unit (with code 498 (Japan version), dealer option) | A90/5 | Multimedia connection unit | CAN D | Diagnostic CAN | ||
A2/49a1 | Telematics services antenna | A105 | Touchpad (with code 446 (Touchpad only) or code 448 (Touchpad)) | CAN HMI | User interface CAN | ||
A2/49a2 | GPS antenna | B25/20 | Driver hands-free system microphone | CAN LR | Steering wheel CAN | ||
A2/54 | Left emergency call system antenna (with code 360 (HERMES UMTS), with code 362 (HERMES LTE) or with code 503 (Pre-installation for Remote Parking Pilot) and code 536 (SIRIUS satellite radio)) | N30/4 | Electronic Stability Program control unit | Flex E | Chassis FlexRay | ||
A2/55 | Right emergency call system antenna (with code 362 (HERMES LTE) or with code 503 (Pre-installation for Remote Parking Pilot) or with code 503 (Pre-installation for Remote Parking Pilot) and code 536 (SIRIUS satellite radio)) | N40/3 | Sound system amplifier control unit (with code 810 (Sound system)) | MOST | Media Oriented System Transport | ||
A2/82 | SDARS antenna (with code 536 (SIRIUS satellite radio)) | N40/7 | Advanced Sound System amplifier control unit (with CODE 811 (Advanced Sound System)) | LIN A3 | LCP LIN | ||
A2/83 | WLAN antenna | N72 | Lower control panel (with code 446 (Touchpad only)) | HSVL | High-speed video link | ||
A2/94 | DSRC antenna (with code 498 (Japan version), dealer option) | N72s10 | Navigation button | A | Touchpad (with code 446 (Touchpad only)) | ||
A2/118 | Windshield antenna (model 217.4) | N72s13 | Volume control button | B | Touchpad (with code 448 (Touchpad)) | ||
A2/138 | FM2, DAB and TV2 antenna amplifier | N73 | Electronic ignition switch control unit | C | With code 362 (HERMES LTE) up to 31.05.2019 or except code 362 (HERMES LTE) | ||
A26/17 | Head unit | N80 | Steering column module control unit | D | With code 362 (HERMES LTE) as of 01.06.2019 | ||
A40/8 | Audio/COMAND display | N112/9 | HERMES control unit (with code 360 (HERMES UMTS) or code 362 (HERMES LTE)) |
Information on touchpad
The touchpad is installed in two variants.
Variant 1 (with code 448 (Touchpad)): The touchpad is installed together with the Audio/COMAND control panel. The touchpad is connected only to the telematics CAN.
Variant 2 (with code 446 (Touchpad only)): The touchpad is installed instead of the Audio/COMAND control panel. In this case, the lower control panel is connected to the touchpad via the UBF-LIN. The touchpad is also connected to the telematics CAN.
Function requirements, general
Circuit 30t ON
Transport mode not active
Signal reception from at least three global navigation system (GPS) satellites
No smartphone connected via Android Auto or CarPlay.
Navigation mode
The navigation module is integrated in the head unit. The navigation system includes the following functionalities:
Position finding
Destination entry
Route calculation
Display of navigation maps
Intersection zoom
Visual driving instructions in form of pictograms
Acoustic driving instructions
The location of the vehicle and the direction and distance to the destination are determined continuously with the aid of the navigation system. After entering or selecting a destination location, route calculation starts.
Depending on national version, various options can be selected for route calculation, e.g.: :
"Fast route"
"Dynamic route"
"Eco Route"
"Short route"
Avoid options (e. g. "Avoid area", "Avoid tunnel", "Avoid ferries", "Avoid toll sticker roads")
If observance of the options is not possible, they are ignored for the stretches in question. Visual and acoustic signals are also output. The set options can be changed at any time. When the route is being calculated, the message "Calculating route" is output. Following calculation, the route is displayed by arrow pictograms on the Audio/COMAND display. If the vehicle is no longer traveling along the precalculated route, the route is recalculated. If the recalculated values are plausible for the navigation system, then the modified route is displayed.
Dynamic route guidance (with "Dynamic route", "Dynamic route with confirmation" or "Eco route" ): An alternative route is offered under dynamic route guidance, in the event of a sufficiently long traffic jam or road closure on the calculated route.
For a valid subscription, the navigation system also has apps with information (e.g. weather, gas station prices) or lists, map data of points of interest (e.g. restaurant, gas station, parking area), which can be selected as the destination or for a stopover.
Destinations can be transmitted to the vehicle from the Internet via the "Mercedes-Benz Application Gateway" and imported into the navigation system.
Model 217, 222
as of model year 2018
except code 498 (Japanese version)
Routes can be transmitted to the vehicle from the Internet via the "Mercedes-Benz Application Gateway" and imported into the navigation system.
Model 217, 222
as of model year 2018
with code 494 (US version)
Destination entries or points of interest can be made available to the navigation module of the head unit by the Service Center.
Model 222
as of model year 2018
with code ME05 (Hybrid drive 85kW/90kW VARIANT (incl. Plug-in))
The map data is used for the route-based & foresighted energy management.
The navigation system can be operated with the following components:
Audio/COMAND control panel (with code 448 (Touchpad))
The Audio/COMAND control panel transmits the control signals via telematics CAN to the head unit.
Touchpad (with code 446 (Touchpad only) or code 448 (Touchpad))
The touchpad transmits the operation signals over the telematics CAN to the head unit.
Head unit multifunction steering wheel button group
The control signals of the head unit multifunction steering wheel button group are forwarded via the following route:
Steering wheel electronics
Steering wheel CAN
Steering column tube module control unit
Suspension FlexRay
Electronic ignition lock control unit
User interface CAN
Instrument cluster
User interface CAN
Head unit
Voice control system
When operating with the voice control system, voice input takes place using the driver hands-free system microphone. The words spoken are converted into an electric signal and routed to the head unit.
Remote control with code 864 (Rear Seat Entertainment System)
The "Drive Show" function can be activated in the navigation system ("Drive Show" sequence of pictures which show the current position, route, traffic information along the route, area around the destination, and the altitude course of the route covered so far). The left rear display or the right rear display must be selected using the remote control wheel. The remote control's Kleer® radio signals are received via the following route:
Left rear display or right rear display
HSVL
Rear Seat Entertainment system controller unit
MOST
Head unit
For the voice control system of navigation, in particular for destination entry, additional name lists are available in the navigation system. Name lists exist for the following information, for example, place names for selected towns/cities on the data storage medium, street names for all towns, town centers and special destinations.
The navigation mode function includes the following subfunctions:
GPS position finding
Basic position finding
Route calculation
Destination-oriented navigation
Dynamic route guidance (except code 498 (Japan version) and except code 367 (Live Traffic Information))
Vehicle Information and Communication System (VICS) over the FM multiplexer (with code 498 (Japan version))
Dynamic route guidance with VICS (with code 498 (Japan version), Dealer Option)
Dynamic route guidance with real-time traffic data via the HERMES control unit (with code 367 (Live Traffic Information))
Map function
Extended navigation functions
The navigation system uses a special interface to provide data that is used by other systems in the vehicle. The head unit transmits the data via the user interface CAN.
GPS position finding
The GPS is a satellite-based position finding system, which is available on a global basis. GPS position finding is irretrievable after vehicle transport (e.g. by train or ferry or after towing). Recalculating the GPS position (after interruption of the satellite reception) can take several minutes (up to 5 minutes during initial commissioning). The accuracy of the position finding and the actual calculation are essentially based on the measurement of the run times of the signals sent synchronously by the various satellites. A vital precondition is the synchronicity of the clocks in the satellites and in the receiver. To ensure synchronicity, the receiver is equipped with an automatic time correction that is possible thanks to the satellite signals. The head unit calculates the current position of the vehicle from the GPS signals. The direction of travel is determined with the aid of the sequence of locations calculated with the GPS system.
With code 362 (HERMES LTE), as of 01.06.2019, the HERMES control unit receives GPS signals from the multifunction antenna (model 222) or from the GPS antenna (model 217) and forwards them to the head unit.
With code 362 (HERMES LTE) up to 31.05.2019 or except code 362 (HERMES LTE), the head unit receives GPS signals from the multifunction antenna (model 222) or from the GPS antenna (model 217).
As GPS operates in the gigahertz (GHz) range and the signals are weak, the following events may lead to reception interference: Atmospheric interference disturbances (e.g. bad weather, water vapor, mist), multiple reception through signal reflexions (e.g. on house walls) or signal shadowing (e.g. in built-up areas, in tunnels, due to tall buildings or trees).
Basic position finding
If no GPS signals are received during route guidance, navigation is still possible with basic position finding. A defect, e. g. in the GPS antenna is therefore not immediately perceptible. Basic position finding runs parallel to GPS position finding.
For basic position finding the head unit requires the following information:
Wheel speed and wheel rotation direction (forwards or backwards) from the Electronic Stability Program control unit
The Electronic Stability Program control unit transmits information on the wheel speed and direction of rotation via the following route:
Suspension FlexRay
Electronic ignition lock control unit
User interface CAN
Head unit
Angular velocity of the rotation from the gyro sensor in the head unit
Ramp detection via the 3D acceleration sensor in the head unit
The head unit calculates the current vehicle position (longitude and latitude) around once per second.
Location faults during position finding, rolling backwards with circuit 15 OFF or vehicle transportation falsify basic position finding. The deviation is automatically corrected by the navigation processor integrated in the head unit when GPS data is received.
Calibration
The calibration following a tire replacement is performed automatically.
Because of the tire abrasion, a constant recalibration of the tire circumference is required. Recalibration is carried out automatically and uses the difference between the calculated and actually traveled distance between two turning points that has been determined using map-based position finding.
Route calculation
Route calculation is accomplished using the options set to the best possible extent. If observance of the options is not possible, they are ignored for the stretches in question. Visual and acoustic signals are also output. The set options can be changed at any time. When the route is being calculated, the message "Calculating route" is output. Following calculation, the route is displayed by arrow pictograms on the Audio/COMAND display. If the vehicle is no longer traveling along the precalculated route, the route is recalculated. If the recalculated values are plausible for the navigation system, then the modified route is displayed.
Destination-oriented navigation
The integrated navigation processor continuously compares the route calculation data with the position finding data and uses the data to deduce measures for further route guidance. The route guidance is carried out by outputting visual and acoustic information and is divided up into the following areas:
Map route guidance
Route guidance through driving lane recommendations
Route guidance by means of voice output
Map route guidance
Route guidance via a map is shown on the Audio/COMAND display or the instrument cluster.
The head unit transmits a switch-on request to the Audio/COMAND display via the telematics CAN. At the same time, the head unit generates the signals for visually depicting route guidance (map navigation), and transmits these to the Audio/COMAND display via the HSVL line. For visualization in the instrument cluster, the head unit transmits corresponding video signals for high-resolution visualization via the HSVL line to the instrument cluster.
Route guidance through driving lane recommendations
For certain turnoff situations on multiple-lane exit points (e. g. freeway intersections), driving lane recommendations are shown in the bottom line. When a turnoff recommendation is given, the distance to the turnoff point is also displayed using a bar graph. The lanes have arrows assigned to them, which indicate on which lane the destination can be reached or the best way to reach it.
With day design, the following colors are used on the Audio/COMAND display:
White: best or recommended lane
Light gray: the lane is correct, but a lane change will soon be required.
Dark gray: this lane will not take you to the destination.
Route guidance by means of voice output
Route guidance by means of voice output is an assistance function that assists the driver without distracting him from the traffic. Voice is output with the selected system language. The route guidance of the navigation system is supported by voice outputs with the following information:
Directional instructions
Name of the next road to turn into.
Further voice messages take place, e. g. at the start of route calculation, when an intermediate destination has been reached, or when the destination has been reached.
During dynamic route guidance, additional voice messages are issued due to traffic messages affecting the route. In some cases, special information is also issued via voice output in certain circumstances, e. g.:
Destination lies in area where driving is only possible to a limited extent
Route via ferry
The navigation processor of the head unit links word segments to form complete instructions or information during voice output.
During active voice output, the volume of the voice outputs can be regulated using the volume adjustment button of the Audio/COMAND control panel (with code 448 (Touchpad)), of the lower control panel (with code 446 (Touchpad only)), the volume adjustment switch of the head unit multifunction steering wheel button group or using the remote control (with code 864 (Rear Seat Entertainment System)).
The Audio/COMAND control panel (with code 448 (Touchpad)) transmits the status of the volume adjustment button to the head unit via the telematics CAN.
The lower control panel (with code 446 (Touchpad only)) transmits the status of the volume adjustment button via the following route:
LCP LIN
Touchpad (with code 446 (Touchpad only))
Telematics CAN
Head unit
The status of the head unit multifunction steering wheel button group's volume adjustment switch is forwarded via the following route:
Steering wheel electronics
Steering wheel CAN
Steering column tube module control unit
Suspension FlexRay
Electronic ignition lock control unit
User interface CAN
Instrument cluster
User interface CAN
Head unit
The remote control sends the status of the volume adjustment button via the following route:
Left rear display or right rear display (with code 864 (Rear Seat Entertainment System))
HSVL
Rear entertainment controller unit
On vehicles except CODE 810 (Sound system) and except CODE 811 (Advanced sound system), the voice output is forwarded to the speaker system by the head unit.
In vehicles with CODE 810 (Sound system), the head unit transmits the voice output via the MOST to the sound system amplifier control unit. The sound system amplifier control unit amplifies the signals and forwards them to the speaker system.
In vehicles with code 811 (Advanced sound system), the head unit sends the voice output over MOST to the Advanced sound system amplifier control unit. The Advanced sound system amplifier control unit amplifies the signals and forwards them to the speaker system.
Dynamic route guidance (except code 498 (Japan version) and except code 367 (Live Traffic Information))
Dynamic route guidance is performed in "Dynamic route", "Dynamic route with confirmation" or "Eco route" mode (except code 498 (Japan version)). During dynamic route guidance the current traffic situation is taken into consideration when appropriate traffic data is received. The traffic data recorder decodes the traffic information and forwards it internally to the navigation processor upon request. The navigation processor makes the decision whether the route should be changed.
During dynamic routing with confirmation, the user is notified of the effects of the route change on the travel distance and driving time. The route is only changed with the user's agreement.
If necessary, a message that the route should be changed is output via the speaker system.
The incoming information about the traffic situation can be received by the Radio Data System/Traffic Message Channel (RDS/TMC) function via FM radio or digital radio (DAB) (with code 537 (Digital radio (DAB))) if an appropriate station has been selected.
Dynamic route guidance via RDS/TMC occurs if no real-time traffic data is received via the HERMES control unit (e.g. no valid subscription or the vehicle is not within the geographical area for which the traffic data service is offered).
The head unit's FM receiver receives the traffic messages via the following route, and forwards them internally to the traffic data recorder:
Rear window antenna (model 217.3 and model 222) or windshield antenna (model 217.4)
FM, AM, CL, DAB antenna amplifier and KEYLESS-GO or FM2, DAB and TV2 antenna amplifier
Head unit
In vehicles with code 537 (Digital radio (DAB)), the DAB band III signals are forwarded via the following route:
Rear window antenna (model 217.3 and model 222) or windshield antenna (model 217.4)
FM2, DAB and TV2 antenna amplifier or FM, AM, CL, DAB antenna amplifier and KEYLESS-GO
Head unit
Vehicle Information and Communication System (VICS) over the FM multiplexer (with code 498 (Japan version))
The driver is provided with vital information by the VICS on the current traffic situation. Traffic impairments and traffic jams are shown on the map, however they are not incorporated into the dynamic route guidance. The VICS messages are transmitted as FM radio signals, and are received as follows:
Rear window antenna (model 217.3 and model 222) or windshield antenna (model 217.4)
FM, AM, CL, DAB antenna amplifier and KEYLESS-GO or FM2, DAB and TV2 antenna amplifier
Head unit
The VICS information is processed in the FM multiplexer integrated in the head unit. The head unit then transmits the data required for displaying the information to the Audio/COMAND display via the HSVL line.
Dynamic route guidance with VICS (with code 498 (Japan version), Dealer Option)
The Vehicle Information and Communication System (VICS) control unit and the Dedicated Short-Range Communications control unit are required for dynamic route guidance. The Vehicle Information and Communication System (VICS) control unit contains both the receiver and the antenna. The antenna communicates with the VICS beacons (transmitter masts) installed at the roadside which transmit microwave signals within a 2.5 gigahertz reception range or infrared signals. The received signals are transmitted to the head unit via the Dedicated Short-Range Communications control unit and decoded. The Dedicated Short-Range Communications control unit receives VICS signals in the 5.8 gigahertz reception range via the DSRC antenna and forwards them to the head unit. The traffic messages are stored in the traffic data recorder of the head unit, decrypted and forwarded to the navigation processor on request. The navigation processor makes the decision whether the route should be changed. If necessary, a message saying that the route was changed is issued.
Additional function requirements for dynamic route guidance with real-time traffic data via the HERMES control unit (with code 367 (Live Traffic Information))
Subscription for real-time traffic data
The vehicle is located within the geographical area that is covered by the traffic data service.
At the end of the subscription or outside of the geographical area for which the traffic data service is offered, only the dynamic route guidance with radio traffic messages is available.
Dynamic route guidance with real-time traffic data via the HERMES control unit (with code 367 (Live Traffic Information))
The HERMES control unit receives real-time traffic data from the service provider via the following antennas:
Left emergency call system antenna (with code 360 (HERMES UMTS) or with code 362 (HERMES LTE)) and right emergency call system antenna (with code 362 (HERMES LTE)), over the telephone antenna splitter (model 222 with code 362 (HERMES LTE)) or over the emergency call system antenna splitter (model 217 with code 362 (HERMES LTE))
Multifunction antenna (model 222 with code 360 (HERMES UMTS) or with code 362 (HERMES LTE))
Telematics services antenna (217 with code 360 (HERMES UMTS) or with code 362 (HERMES LTE))
The antennas form a sending/reception diversity.
The real-time traffic data not only include information gathered via satellite support. Via the car-to-X communication function, information on potential hazards in road traffic are also received, either via the recognition potential of the vehicle sensor system of other Mercedes-Benz vehicles or manually by the vehicle occupants within a radius of 10 km.
The HERMES control unit forwards real-time traffic data to the head unit. The HERMES control unit receives position data from the head unit at regular intervals. Data exchange between the HERMES control unit and the head unit takes place via a wireless connection between the HERMES control unit's integrated WLAN interface (Wireless Local Area Network) and the WLAN antenna.
The HERMES control unit transmits the position data to the service provider via the specified antenna connection. In this way, the HERMES control unit contributes to collecting the traffic information, from which the dynamic route guidance then benefits in turn.
Map function
The map display is always controlled by the head unit. The following display functions are supported:
Route guidance map
Positioning map
Route map
Scrollable map
Destination entry map
In vehicles with a valid subscription, software updates can be downloaded online in the vehicle. If software updates are stored on mass media storage devices, they can be transferred to the head unit via the multimedia connection unit.
Extended navigation functions
The navigation system is extended with regard to convenience, customization and tourist information by the following functions:
Integration of electronic travel guide, accumulation of destinations and downloading of routes via a Secure Digital (SD) card and the SD card slot of the multimedia connection unit
Special search engine that also makes fuzzy destination entries possible (e. g. parts of destination town, road or points of interest).
"Route flight" (provides a visual overview of the planned route from a bird's eye view)
"Drive Show" (sequence of pictures, which show the current position, route, traffic information along the route, vicinity of the destination and the altitude course of the route currently being navigated)
"Compass" (display of a compass screen, which also contains the geo-coordinates for the current position and the current altitude)
Possibility to access the Mercedes-Benz "Travel guide" (accessory) via the SD card slot in the multimedia connection unit
Data communication between the head unit and the SD card takes place via the USB connection between the head unit and the multimedia connection unit.
The extended navigation mode functions are implemented internally in the head unit and, where applicable, shown via the HSVL line on the Audio/COMAND display.