Additional Telematics Services Function - GF82.95-P-2025RFA
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
with code 05U (Remote Online)
except code 348 (Emergency call/assistant system)
Model 253
with code 06U (Mercedes connect me standard services)
except code 348 (Emergency call/assistant system)
Function requirements for further telematics services, general
- Circuit 30
- Transport mode is not active.
- Each vehicle-related service is authorized separately.
- The telematics services communications module (N112/1) is configured with the telephone number of the corresponding service provider.
- The vehicle owner is registered and authorized at the Service Center.
Additional telematics services in general
At the vehicle side, the telematics services are realized by the telematics services communications module via a mobile radio connection to the Service Center. The telematics services communications module sends and receives mobile phone signals over the communications module/stationary heater antenna (A2/129), and over the communications module/stationary heater antenna splitter (A2/125) (with code B24 (Remote control for stationary heater)).
In vehicles with code 06U (Mercedes connect me basic services) the following services are also available:
- Breakdown service ("Accident Management"): The customer can request technical assistance after an accident via a voice connection.
- Breakdown assistance ("Breakdown Management"): The customer can request technical assistance via a voice connection. With the consent of the customer, vehicle data can be transmitted in order to provide quicker and more effective assistance.
- Service and maintenance ("Maintenance and Teleguard"): If the customer has taken out a service and maintenance contract, vehicle data is transmitted via the Service Center to the service partners if necessary; the service partner then notifies the customer that service is required using the medium selected by the customer (e.g. "MyMercedes", email, telephone). If the customer has not taken out a service and maintenance contract, a pop-up window appears on the Audio/COMAND display (A40/8) 5 days before the calculated service date, asking whether a connection to the customer center should be set up. If the customer selects "Call now", a voice connection is established to the Service Center. If the customer selects "Call later", the pop-up window is displayed again later. If the customer selects "No, thank you", no pop-up window is displayed when the service is due.
In vehicles with code 05U (Remote Online), various app services can also be enabled. These app services allow the customer to use his terminals (e.g. Smartphone, tablet or PC) to transmit information and operating requests to the vehicle via the Service Center and receive up-to-date vehicle data that has been prepared by the app. For example, the following app service are available:
- Geographical vehicle monitoring: The customer is informed on-line as soon as his vehicle leaves or reaches an area marked by the customer.
- Vehicle locating: The customer is informed online of the current vehicle location by transferring geo-coordinates; the activation of this function is indicated in the vehicle by an icon on the Audio/COMAND display.
- Vehicle location: The customer can locate the vehicle within an area of 1.5 km using the Smartphone; this makes it easier to find the vehicle, e.g. in a large car park or in unfamiliar cities.
- Vehicle status remote query: vehicle data such as the status of the doors and the fuel level can be retrieved on-line.
The telematics services function encompasses the following subfunctions:
- Voice connection between vehicle and service center (with code 06U (Mercedes connect me basic services))
- Position finding
- Forwarding of vehicle data, display messages, data queries and operating requests
Voice connection between vehicle and Service Center
By selecting the reserved telephone book entry "MB-Contact" or by operating the breakdown assistance button, MB-Info button, the telematics services communications module sets up a voice connection over the communications module/stationary heater antenna to the Mercedes-Benz service center.
The setup of a voice connection to the Mercedes-Benz Service Center is aborted after several unsuccessful dialing attempts, and a corresponding message appears on the Audio/COMAND display.
Model 205
with code 06U (Mercedes connect me standard services)
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
with code 06U (Mercedes connect me standard services)
with code 350 (Ecall emergency call system, Europe)
except code 348 (Emergency call/assistant system)
Telematics services, e.g. the breakdown service, can also be triggered by the Service Center following an emergency call with the customer's consent. In this case, the voice connection that was set up for the emergency call is used again by means of transferring within the Service Center. The emergency call is then converted into a service with lower priority.
The voice connection function between the vehicle and the Service Center is split up into the following subfunctions:
- Selection of telephone book entry "MB Contact"
- Connection set up through the "MB-Contact" telephone book entry
- Connection set up through the overhead control panel control unit (N70)
- Mute function
- Hands-free
Selection of telephone book entry "MB Contact"
The permanently reserved telephone book entry "MB-Contact" can be selected using one of the following components:
- Audio/COMAND control panel
- Multifunction steering wheel button groups
- Voice control system (VCS [SBS]) (with code 531 (COMAND APS))
- Touchpad (up to 31.05.2015 with code 522 (Audio 20 radio), with code 531 (COMAND APS); as of 01.06.2015 with code 448 (Touchpad))
Audio/COMAND control panel
The control signals from the Audio/COMAND control panel are forwarded to the head unit via telematics CAN.
Multifunction steering wheel button groups
The control signals from the multifunction steering wheel button groups are forwarded over the following components:
Steering wheel electronics (N135) →
Steering LIN (LIN E1) →
Steering column tube module control unit (N80) →
Chassis FlexRay (Flex E) →
Electronic ignition lock control unit (N73) →
User interface CAN (CAN HMI) →
Instrument cluster (A1) →
User interface CAN →
Head unit
Voice control system (VCS [SBS]) (with code 531 (COMAND APS))
The voice control system is activated on the left multifunction steering wheel button group. The voice control system is automatically switched off when the call is set up.
The control signal from the left multifunction steering wheel button group is forwarded as follows:
Steering wheel electronics →
Steering LIN →
Steering column tube module control unit →
Suspension FlexRay →
Electronic ignition lock control unit →
User interface CAN →
Instrument cluster →
User interface →
Head unit
When the voice control system is active, the voice commands are recorded by the hands-free system microphone (A67b1) and forwarded over a direct line to the head unit.
The individual voice commands are listed in the "Linguatronic operator's manual".
Touchpad (up to 31.05.2015 with code 522 (Audio 20 radio), with code 531 (COMAND APS); as of 01.06.2015 with code 448 (Touchpad))
The head unit receives the control signals from the touchpad via the telematics CAN.
Connection set up through the "MB-Contact" telephone book entry
If the "MB Contact" telephone book entry was selected, the head unit sends a prompt to set up a voice connection as follows:
User interface CAN →
Electronic ignition lock control unit →
Diagnostic CAN →
Telematics services communication module
The telematics services communications module establishes a voice connection to the Service Center via the communications module/stationary heater antenna and transmits vehicle data.
Connection set up through the overhead control panel control unit
The towing services, breakdown assistance as well as some functions related to service and maintenance service can be used by pressing the breakdown assistance button (N70s12) or the MB-Info button (N70s13) of the overhead control panel.
The telematics services communications module receives the control signal from the buttons as follows:
Roof LIN (LIN B13) →
Front SAM control unit (N10/6) →
Interior CAN (CAN B) →
Electronic ignition lock control unit →
Diagnostic CAN (CAN D) →
The telematics services communications module establishes a voice connection to the Service Center via the communications module/stationary heater antenna and transmits vehicle data.
Mute function
When a voice connection is set up, the telematics services communications module sends a signal to mute the audio sources over a direct line to the following component, which actuates the speaker system:
- Sound system amplifier control unit (with code 810 (Sound system))
- Head unit (except CODE 810 (Sound system))
Hands-free
The hands-free system is not available for telephone calls for the duration of the voice connection.
After a data telegram has been transmitted to the Mercedes-Benz Service Center, the user can speak to a service receptionist via the voice connection. The Mercedes-Benz Service Center carries out the call in the language that was selected in the system settings of the head unit and transmitted in the data telegram.
The telematics services communications module receives the outgoing voice signals from the hands-free system microphone over the head unit.
The telematics services communications module emits the incoming voice signals over the center instrument panel speaker (H4/27).
The volume of the voice output can be adjusted using the following controls:
- Right multifunction steering wheel button group
- Head unit
- Audio/COMAND control panel
- Touchpad (up to 31.05.2015 with code 522 (Audio 20 radio), with code 531 (COMAND APS); as of 01.06.2015 with code 448 (Touchpad))
Position finding
Determining the current vehicle location is vital for many telematics services, for which reason the telematics services communications module has its own position finding module. The telematics services communications module uses the satellite-supported global positioning system (GPS) to find its location. GPS is available worldwide. GPS position finding is irretrievable after vehicle transport (e.g. by train or ferry or after towing). Recalculation of the GPS position (following an interruption in satellite reception) can take several minutes. A basic position finding routine runs in parallel to the GPS position finding routine that makes it possible to also locate the position of the vehicle if GPS reception fails.
The telematics services communications module can also access the head unit's positioning data.
The head unit sends the positioning data as follows:
User interface CAN →
Electronic ignition lock control unit →
Diagnostic CAN →
Telematics services communication module
The position finding function consists of the following component functions:
- GPS position finding
- Basic position finding
GPS position finding
In vehicles with code 520 (Audio 20 USB), the telematics services communications module receives the GPS signal from the GPS antenna (A2/23).
In vehicles with code 522 (Audio 20 radio) or with code 531 (COMAND APS) the head unit receives the GPS signal from the GPS antenna and routes it as follows to the telematics services communications module:
User interface CAN →
Electronic ignition lock control unit →
Diagnostic CAN
Additional function requirement for basic position finding
- Circuit 15 R On
Basic position finding
The telematics services communications module requires the following signals for basic position finding:
- Wheel speed and yaw rate signals from the Electronic Stability Program control unit (N30/4)
- Steering wheel angle sensor (N49)
The telematics services communications module receives the wheel speed and yaw rate signals from the Electronic Stability Program control unit via the following route:
Suspension FlexRay →
Electronic ignition lock control unit →
Diagnostic CAN
The telematics services communications module receives the signal from the steering wheel angle sensor via the following route:
Steering column tube module control unit →
Suspension FlexRay →
Electronic ignition lock control unit →
Diagnostic CAN
The telematics services communications module uses the data to calculate the current vehicle position (longitude and latitude).
Position finding errors, rolling backwards with "circuit 15 OFF" (ignition switched off) or transport of the vehicle falsify the basic position finding. In both cases, this deviation is automatically corrected on receipt of GPS data.
Forwarding of vehicle data, display messages, data queries and operating requests
The telematics services communications module forwards the data queries and operating requests that have been received via the mobile radio connection to the Service Center via the diagnostic CAN to the electronic ignition lock control unit. The telematics services communications module receives vehicle data from the electronic ignition lock control unit via the diagnostic CAN, and forwards this data and the data of the integrated position finding module over the communication module/stationary heater antenna to the Service Center to meet requirements.
The content shown on the Audio/COMAND display (e.g. pop-up window, vehicle locating symbol) is sent by the telematics services communications module as follows:
Diagnostic CAN →
Electronic ignition lock control unit →
User interface CAN →
Head unit →
LVDS line →
Audio/COMAND display
| Electrical function schematic for telematics services function | PE82.95-P-2074-97FBC | ||
| Overview of system components, telematics | Model 205 up to model year 2017 with code 05U (Remote Online) except code 347 (Mercedes-Benz emergency call system) except code 348 (Emergency call/assistant system) Model 205 up to model year 2017 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 up to model year 2017 with code 05U (Remote Online) except code 348 (Emergency call/assistant system) Model 253 up to model year 2017 with code 06U (Mercedes connect me standard services) except code 348 (Emergency call/assistant system) |
GF82.85-P-9999RF |