Manual or automatic emergency call, function - GF82.95-P-2024GQU
MODEL 164.1 with CODE (359) TELE AID emergency call system as of model year 2009/Modification Year 2008 model refinement package
MODEL 164.8 with CODE (359) TELE AID emergency call system as of model year 2009/Modification Year 2008
MODEL 251.0 with CODE (359) TELE AID emergency call system as of model year 2009/Modification Year 2008
MODEL 251.1 with CODE (359) TELE AID emergency call system as of model year 2009/Modification Year 2008
Function requirements, general
- Emergency call system authorized and operating properly
- The vehicle-related manual or automatic emergency call (E-Call), including police emergency number "911", is authorized separately
- An emergency call system control unit (N123/4) communication module authorized for the corresponding vehicle-related service is configured ex-factory with the telephone number of the corresponding service provider
- The customer is registered and authorized at the service center
- One mobile phone network is available in sufficient strength and quality
- Global positioning system (GPS) reception is available and operating properly
- Communication between the emergency call system control unit and the restraint systems control unit (N2/7) is operating error-free
- Production mode deactivated (accomplished following final factory inspection)
Improper actuation of a manual or automatic emergency call is punishable by law!
General
In the event that a driver is confronted with an emergency situation in a remote location, a service center employee can obtain an overview of the situation inside the vehicle with the aid of the data received from the emergency call system control unit (voice connection and SMS) and initiate the appropriate action required for help. An emergency call be triggered manually or automatically. The purposes of these emergencies calls are as follows:
- Automatic alerting of the rescue services after an accident
- Alerting of rescue workings at the press of a button (own emergency situation, observed accident)
- Reduction of rescue times through fast emergency notification with details on exact location involved
The emergency call function consists of the following subfunctions:
- Function sequence for initiating manual emergency call
- Function sequence for initiating automatic emergency call
- Function sequence for transmission of emergency call data and communication with the service center
Function requirements for initiating manual emergency call
- Circuit 30
- Triggering a manual emergency call by pressing the SOS pushbutton switch (S93/3) > 0.5 s
- A higher-priority vehicle-related service is not active
Function sequence for initiating manual emergency call
The emergency call system control unit reads in the SOS pushbutton switch directly via a discrete line.
Function requirements for initiating automatic emergency call
- Circuit 15R
- Triggering an automatic emergency call by the crash signal and receiving the crash level from the restrain systems control unit
Function sequence for initiating automatic emergency call
The emergency call system control unit receives the crash signal from the restraint systems control unit via a discrete line.
Simultaneously. the emergency call system control unit receives the crash signal (redundant) and the crash level from the restrain systems control unit over the following path:
- Engine compartment CAN
- Central gateway control unit (N93)
- Diagnostic CAN
Function sequence for transmission of emergency call data and communication with the service center
After a manual or automatic emergency call has been triggered, the emergency call system control unit completes a voice connection to the service center.
After the service center replies with a special tone, the emergency call system control unit automatically sends an SMS with the following data to the service center over the integrated communication module:
- Vehicle position, direction of ravel and history
- Vehicle data and crash evaluation (severity of accident)
The communication module integrated into the emergency call system control unit transmits and receives the mobile phone signals or data in the following way:
- Direct line
- TELE AID antenna (A2/93a4)
If connection to the service center cannot be established when an automatic emergency call is triggered, a voice connection is automatically set up using the emergency number "911" and it is then necessary to communicate the listed data verbally.
When a manual or automatic emergency call is active, this status is indicated by the two red light-emitting diodes (LED), integrated into the SOS pushbutton switch, flashing. This is also displayed in the instrument cluster (A1) and on the display on the COMAND operating, display and controller unit (A40/3).
In the event of a manual or automatic emergency call, other vehicle-related services (e.g. MB-Info call) and, on model 164 vehicles with code (389) Mobile phone preinstallation with universal interface, USA/Canada, any mobile phone connections active are interrupted.
In the event of failure of the TELE AID antenna (e.g. defective due to rollover), the emergency call system control unit automatically uses the TELE AID backup antenna (A2/50) to transmit the mobile phone signals or data.
| Electrical function diagram for manual or automatic emergency call, function | Model 164 | PE82.95-P-2066-97MAA | |
| Model 251 | PE82.95-P-2066-97RAA | ||
| Instrument cluster, component description | A1 | GF54.30-P-6000GM | |
| COMAND operating, display and controller unit, component description | A40/3 With code (528) COMAND including DVD changer without navigation With code (512) COMAND APS with DVD changer |
GF82.85-P-3134GQ | |
| Restraint systems control unit, component description | N2/7 | GF91.60-P-4048GM | |
| Central gateway control unit, component description | N93 | GF54.21-P-4170GM | |
| Emergency call system control unit, component description | N123/4 | GF82.95-P-3212GQU |