Display of emergency call system status, function - GF82.95-P-2023GQU
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 for display of emergency call system status
- Emergency call system authorized and operating properly
- The following vehicle-related services are authorized separately:
- Automatic emergency call (E-Call)
- Manual emergency call (E-Call)
- Breakdown assistance (Roadside Assistance)
- MB-Info call
- Vehicle remote door unlock
- The customer is registered and authorized at the service center
- 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
- One mobile phone network is available in sufficient strength and quality
- Triggering of correspondingly listed vehicle-related services
- Global positioning system (GPS) reception is available and operating properly
Triggering the vehicle-related services listed is described in detail in the respective separate service information.
General
The two red light-emitting diodes (LED) integrated into the SOS pushbutton switch (S93/3) serve to indicate the following actions:
- Emergency call system self-test
- Emergency call system ready state
- Automatic or manual emergency call active
Malfunctions in the emergency call system are also indicated on the instrument cluster (A1), depending on the type of malfunction.
The LED integrated into the Tele-diagnosis button (S93/6s2) flashes when the breakdown assistance is active. This is also displayed in the instrument cluster and on the display on the COMAND operating, display and controller unit (A40/3).
The LED integrated into the MB-Info button (S93/6s1) flashes when an MB-Info call is active. This is also displayed in the instrument cluster and on the display on the COMAND operating, display and controller unit.
Moreover, when the breakdown assistance and an MB-Info call is active, the Remote Destination Feed or Points of Interest (POI) are shown on the display of the COMAND operating, display and controller unit, on vehicles with code (512) COMAND APS with DVD changer.
The execution of the vehicle remote door unlock is displayed by a message in the instrument cluster. In addition, the red LED in the SOS pushbutton switch flashes.
The display function for the emergency call system status consists of the following subfunctions:
- Function sequence for emergency call system status in non-actuated state
- Function sequence for emergency call system status for automatic emergency call
- Function sequence for emergency call system status for manual emergency call
- Function sequence for emergency call system status for breakdown assistance
- Function sequence for emergency call system status for MB-Info call
- Function sequence for emergency call system status for vehicle remote door unlock
Function requirement for emergency call system status in non-actuated state
- Circuit 15R
Function sequence for emergency call system status in non-actuated state
As soon as circuit 15R is activated, the two red LEDs integrated into the SOS push button switch come on during the emergency call system control unit self-test for approx. 4 s.
Actuation is accomplished by the emergency call system control unit via a discrete line.
This signals the self-test and check of the following emergency call system states:
- Emergency call system control unit power supply
- Functions within the emergency call system control unit (e.g. integrated communication module or memory)
- Communication with restrain systems control unit (N2/7) and ESP control module (N47-5)
- SOS pushbutton switch function (e.g. jammed or opened emergency call system button)
- TELE AID backup antenna function (A2/50)
- GPS antenna splitter function (A2/5), with code (512) COMAND APS including DVD changer
- TELE AID antenna function (A2/93a4)
- GPS antenna function (A2/93a6)
Circuit 15R receives the emergency call system control unit from the EIS control unit (N73) over the following path:
- Interior CAN
- Central gateway control unit (N93)
- Diagnostic CAN
The emergency call system control unit communicates with the restrain systems control unit ("LIFE signal" every 500 ms) and the ESP control unit over the following path:
- Diagnostic CAN
- Central gateway control unit
- Engine compartment CAN
The following components are checked each over a discrete line:
- TELE AID backup antenna
- GPS antenna splitter, with code (512) COMAND APS including DVD changer
- Restraint systems control unit
- TELE AID antenna
- GPS antenna
If a malfunction is not present, the two red LEDs integrated into the SOS pushbutton switch extinguish after approx. 4 s signaling that the emergency call system is ready for operation.
If a malfunction is present, the two red LEDs integrated into the SOS pushbutton switch are actuated continuously by the emergency call system control unit over a discrete line. Depending on the fault type, a message is displayed in the instrument cluster and filed in the memory of the emergency call system control unit.
The message is displayed in the instrument cluster by the emergency call system control unit in the following way:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
Function requirements for emergency call system status for automatic emergency call
- Circuit 15R
Function sequence for emergency call system status for automatic emergency call
After an automatic emergency call has been triggered (crash recognition including crash level), the emergency call system control unit actuates one of the two red LEDs integrated into the SOS pushbutton switch intermittently over a discrete line. This is also displayed in the instrument cluster and on the display on the COMAND operating, display and controller unit. This is displayed on the instrument cluster over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
This is displayed on the COMAND operating, display and controller unit over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
Function requirements for emergency call system status for manual emergency call
- Circuit 30
Function sequence for emergency call system status for manual emergency call
After a manual emergency call has been triggered with the SOS pushbutton switch, the emergency call system control unit actuates one of the two red LEDs integrated into the SOS pushbutton switch intermittently over a discrete line. This is also displayed in the instrument cluster and on the display on the COMAND operating, display and controller unit. This is displayed on the instrument cluster over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
This is displayed on the COMAND operating, display and controller unit over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
Function requirements for emergency call system status for breakdown assistance
- Circuit 30
Function sequence for emergency call system status for breakdown assistance
After the breakdown assistance has been triggered with the tele-diagnosis button, the emergency call system control unit actuates the LED integrated into the tele-diagnosis button intermittently over a discrete line. This is also displayed in the instrument cluster and on the display on the COMAND operating, display and controller unit.
This is displayed on the instrument cluster over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
This is displayed on the COMAND operating, display and controller unit over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
Function requirements for emergency call system status for MB-Info call
- Circuit 30
Function sequence for emergency call system status for MB-Info call
After triggering the MB-Info call using the MB-Info button, the emergency call system control unit intermittently (partially off) actuates the LED integrated into the MB-Info button via a discrete line. This is also displayed in the instrument cluster and on the display on the COMAND operating, display and controller unit.
This is displayed on the instrument cluster over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
This is displayed on the COMAND operating, display and controller unit over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
Function requirements for emergency call system status for vehicle remote door unlock
- Circuit 30
Function sequence for emergency call system status for vehicle remote door unlock
After the vehicle remote door unlock feature has been triggered by a telephone call to the service center, the emergency call system control unit actuates the red LED integrated into the SOS pushbutton switch intermittently over a discrete line. Moreover, the emergency call system control unit displays the message on the instrument cluster over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
State displays, emergency call system status
| Electrical function diagram for status display of emergency call system, function | Model 164 | PE82.95-P-2061-97MAA | |
| Model 251 | PE82.95-P-2061-97RAA | ||
| 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 | |
| ESP control unit, component description | N47-5 | GF42.45-P-5118GM | |
| Component description for the EZS control unit | N73 | GF80.57-P-6003GM | |
| Central gateway control unit, component description | N93 | GF54.21-P-4170GM | |
| Emergency call system control unit, component description | N123/4 | GF82.95-P-3212GQU |