GF82.95-P-2020RCU Breakdown Assistance, Function

GF82.95-P-2020RCU Breakdown Assistance, Function
- with CODE (359) TELE AID emergency call system

Function requirements
^ Circuit 30
^ Emergency call system authorized and operating properly
^ The vehicle-related breakdown assistance service is separately authorized
^ An emergency call system control unit (N123/4) communication module authorized for the corresponding breakdown assistance 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
^ Triggering of breakdown assistance by pressing breakdown assistance button (S93/6s2) > 0.5 s
^ A higher-priority vehicle-related service is not active

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
With the breakdown assistance function it is possible for the customer to contact the service center in the event of a problem with the vehicle, for example. The service center can then perform remote diagnosis of the actual situation and initiate effective help measures, in consideration of further vehicle-specific data.
The breakdown assistance function consists of the two following subfunctions:
^ Breakdown assistance function sequence
^ Function sequence for Remote Destination Feed or Points of Interest (POI), with code (512) COMAND APS including DVD changer

Breakdown assistance function sequence
The breakdown assistance button is read in by the emergency call system control unit over a direct line. The emergency call system control unit then 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
- Customer identification data
- Vehicle identification data

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
- Left antenna amplifier module (A2/64)
- Direct line
- Rod antenna (A28)

As long as the breakdown assistance is active, the light- emitting diode (LED) integrated into the breakdown assistance button flashes. This is also indicated in the instrument cluster (A1) and on the display of the "audio unit".

In the event of breakdown assistance, other vehicle-related services (e.g. MB-Info call) are interrupted.

In the event of a failure of the rod antenna (defective e.g. due to rollover), the emergency call system control unit for transferring the mobile phone signals and data transmits and receives the mobile phone signals and data in the following way:
- Direct line
- Emergency call system antenna splitter (A2/25)
- Direct line
- Emergency call system left backup antenna (A2/54)
- Emergency call system right backup antenna (A2/55)

Function sequence for Remote Destination Feed or Points of Interest (POI), with code (512) COMAND APS including DVD changer
In the event of breakdown assistance, it is possible, for example, to load the address of a workshop into the navigation module of the COMAND operating, display and controller unit. The service center sends the address of the workshop by means of mobile phone signals or mobile phone data to the emergency call system control unit in the following way:
- Rod antenna
- Direct line
- Left antenna amplifier module
- Direct line

The customer confirms receipt of the workshop and can then start the navigation.

Detailed information on starting the navigation is given in the specific system description for the COMAND display, operating, display and controller unit.

The displays for Remote Destination Feed or Points of Interest (POI) are shown by the emergency call control unit on the display of the COMAND operating, display and controller unit over the following path:
- Diagnostic CAN
- Central gateway control unit (N93)
- Interior CAN
- COMAND operating, display and controller unit