GF82.95-P-2023RCU Display Of Emergency Call System Status, Function
GF82.95-P-2023RCU Display Of Emergency Call System Status, Function
- with CODE (359) TELE AID emergency call system
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) present
Triggering of the correspondingly vehicle-related services listed is described in detail in the respective subfunctions.
Depending on the equipment installed, one of the following control units will be installed, hereafter referred to as the "audio unit":
- Radio (A2), with code (510) Audio 20 including CD changer
- COMAND operating, display and controller unit (A40/3), with code (512) COMAND APS with DVD changer
General
The two red light-emitting diodes (LEDs) 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 breakdown assistance button (S93/6s2) flashes when the breakdown assistance is active. This is also indicated in the instrument cluster and on the display of the "audio unit".
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 display of the "audio unit".
Moreover, when the breakdown assistance or 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 including 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 pushbutton switch illuminate for t = 3.5 s during the emergency call system control unit self-test.
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 restraint systems control unit (N2/7) and ESP and BAS control unit (N47-5)
- SOS pushbutton switch function (e.g. jammed or opened SOS pushbutton switch)
- Emergency call system left backup antenna (A2/54) and emergency call system right backup antenna (A2/55) function
- Emergency call system antenna splitter (A2/25) function
- GPS antenna splitter function (A2/5), with code (512) COMAND APS including DVD changer
- Rod antenna (A28) function
- Left antenna amplifier module (A2/64) function
- GPS antenna function (A2/23)
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 restraint systems control unit ("LIFE signal" every 500 ms) in the following way:
- Interior CAN
- Central gateway control unit
- Diagnostic CAN
The emergency call system control unit communicates with the ESP and BAS control unit in the following way:
- Engine compartment CAN
- Central gateway control unit
- Diagnostic CAN
The following components are checked each over a discrete line:
- Emergency call system left backup antenna and emergency call system right backup antenna
- Emergency call system antenna splitter
- GPS antenna splitter, with code (512) COMAND APS including DVD changer
- Restraint systems control unit
- Rod antenna
- Left antenna amplifier module
- GPS antenna
If a fault 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 is present, the two red LEDs integrated into the SOS pushbutton switch are actuated continuously by the emergency call system control unit over a direct 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 (partially off) 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 display of the "audio unit". This is displayed on the instrument cluster over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
The display on the "audio unit's" screen is transmitted in the following way:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
- "Audio unit"
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 (partially off) 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 display of the "audio unit". This is displayed on the instrument cluster over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
The display on the "audio unit's" screen is transmitted in the following way:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
- "Audio unit"
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 breakdown assistance button, the emergency call system control unit actuates the LED integrated into the breakdown assistance button intermittently (partially off) via a direct line. The LED flashes during the actuation period. This is also indicated in the instrument cluster and on the display of the "audio unit".
This is displayed on the instrument cluster over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
The display on the "audio unit's" screen is transmitted in the following way:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
- "Audio unit"
Function requirements for emergency call system status for MB-Info call
^ Circuit 30
Function sequence for emergency call system status for MBInfo 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. The LED flashes during the actuation period. This is also indicated in the instrument cluster and on the display of the "audio unit".
This is displayed on the instrument cluster over the following path:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
The display on the "audio unit's" screen is transmitted in the following way:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
- "Audio unit"
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 LEDs integrated into the SOS pushbutton switch intermittently (partially off) via a direct line. Moreover, the emergency call system control unit displays the message on the instrument cluster in the following way:
- Diagnostic CAN
- Central gateway control unit
- Interior CAN
Component Identification:
