Display of emergency call system status, function - GF82.95-P-2023LEU
MODEL 216 with CODE (359) TELE AID emergency call system as of model year 09/YoM 08
MODEL 221 with CODE (359) TELE AID emergency call system as of model year 09/YoM 08
Function requirements
- 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
- Vehicle remote door lock
- 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) present
Triggering of the listed vehicle-related services is described in detail in the respective subfunctions.
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 Telediagnosis button (S93/6s2) flashes when the breakdown assistance is active. This is also indicated in the instrument cluster and on the COMAND display (A40/8).
The LED integrated into the MB-Info button (S93/6s1) flashes when an MB-Info call is active. This is also indicated in the instrument cluster and on the COMAND display.
The execution of the vehicle remote door unlock is displayed by a message in the instrument cluster. In addition, a red LED in the SOS push button 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 sequence for emergency call system status for vehicle remote door lock
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 pushbutton switch illuminate during the emergency call system control unit self-test for t = 3.5 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)
- Emergency call system antenna splitter (A2/25)
- Emergency call system left backup antenna function (A2/54)
- Emergency call system right backup antenna function (A2/55)
- Antenna splitter function (A2/5)
- Frequency switchover control unit (N96) function, model 221 with code (389) Mobile phone preinstallation with universal interface, USA/Canada
- Emergency call antenna (A2/52) function, model 216
- Telephone and GPS roof antenna (A2/49) function, model 221
The emergency call antenna is integrated in the GPS antenna (A2/49a2) in model 216.
Circuit 15R receives the emergency call system control unit from the EIS control unit (N73) via the following route:
- Chassis 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 via the following route:
- Diagnostic CAN
- Central gateway control unit
- Chassis CAN
The following components are checked each over a discrete line:
- Emergency call system antenna splitter
- TELE AID backup antennas
- Antenna splitter
- Restraint systems control unit
- Emergency call antenna, model 216
- Telephone and GPS roof antenna, model 221
- Frequency switchover control unit, model 221 with code (389) Mobile phone preinstallation with universal interface, USA/Canada
If a malfunction is not present, the two red LEDs integrated into the SOS pushbutton switch extinguish after t = 4 s signaling that the emergency call system is ready for operation.
If a fault exists, it is stored in the memory of the emergency call system control unit. Depending on the fault type, a message is also displayed in the instrument cluster and the two red LEDs integrated in the SOS push button are permanently actuated by the emergency call system control unit via a direct line.
The message is displayed in the instrument cluster by the emergency call system control unit via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central 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 push button intermittently via a direct line. One of the two LEDs flashes throughout the actuation period. This is also indicated in the instrument cluster and on the COMAND display. This is displayed on the instrument cluster via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central CAN
The display on the COMAND screen is transmitted via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central CAN
- COMAND controller unit (A40/3)
- Low voltage differential signal (LVDS) line
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 push button, the emergency call system control unit actuates one of the two red LEDs integrated into the SOS push button intermittently via a direct line. One of the two LEDs flashes throughout the actuation period. This is also indicated in the instrument cluster and on the COMAND display. This is displayed on the instrument cluster via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central CAN
The display on the COMAND screen is transmitted via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central CAN
- COMAND controller unit
- LVDS line
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 telediagnosis button, the emergency call system control unit actuates the red LED integrated into the telediagnosis button intermittently via a direct line. The LED flashes during the actuation period. This is also indicated in the instrument cluster and on the COMAND display.
This is displayed on the instrument cluster via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central CAN
The display on the COMAND screen is transmitted via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central CAN
- COMAND controller unit
- LVDS line
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 actuates the red LED integrated into the MB-Info button via a direct line. The LED flashes during the actuation period. This is also indicated in the instrument cluster and on the COMAND display.
This is displayed on the instrument cluster via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central CAN
The display on the COMAND screen is transmitted via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central CAN
- COMAND controller unit
- LVDS line
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 push button intermittently via a direct line after actuating the trunk lid external operation switch (S88/8). Moreover, the emergency call system control unit displays the message on the instrument cluster via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central CAN
Function sequence for emergency call system status for vehicle remote door lock
After the vehicle remote door lock 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 push button intermittently via a direct line. The emergency call system control unit also displays the message in the instrument cluster after actuating the transmitter key (A8/1) via the following route:
- Diagnostic CAN
- Central gateway control unit
- Central CAN
State displays, emergency call system status
| Electrical function diagram for status display of emergency call system, function | Model 216 | PE82.95-P-2061-97CAA | |
| Model 221 | PE82.95-P-2061-97SAA | ||
| Instrument cluster, component description | A1 | GF54.30-P-6000LE | |
| COMAND controller unit, component description | A40/3 | GF82.85-P-3136LEU | |
| COMAND display, component description | A40/8 | GF54.30-P-6110LE | |
| Restraint systems control unit, component description | N2/7 | GF91.60-P-4048LE | |
| ESP control unit, component description | N47-5 | GF42.45-P-5118LE | |
| Component description for the EZS control unit | N73 | GF80.57-P-6003LE | |
| Central gateway control unit, component description | N93 | GF54.21-P-4170LE | |
| Emergency call system control unit, component description | N123/4 | GF82.95-P-3212LEU |