GF82.95-P-2025CEU Additional Telematics Services Function

GF82.95-P-2025CEU Additional Telematics Services Function

MODEL 204.0
- with CODE (359) TELE AID emergency call system
- as of model year 2009 /YoM 08
MODEL 204.3 /9
- with CODE (359) TELE AID emergency call system

Function requirements
- Terminal 30
- Each vehicle-related service 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 vehicle owner is registered and authorized at the Service Center
- A higher-priority vehicle-related service is not active (except when transmitting navigation data as part of another service)

Additional telematics services in general
The function of the following telematics services for the emergency call system is described in this document:
- Tracking and notification in the event of antitheft warning
- Roadside assistance
- MB Information service
- Vehicle remote unlocking
- Vehicle remote locking
- Transmission of navigation data

In the event of poor reception or a multifunction antenna malfunction (A28/11) (e.g. defective because of rollover) the emergency call system control unit automatically uses the emergency call system antenna (A2/52) to transmit mobile phone signals.

Tracking and notification in the event of antitheft warning
The following points are vehicle tracking objectives:
- Retrieval of stolen or misappropriated vehicles
- Fast assistance if vehicle stolen or in the event of a holdup

The vehicle tracking function consists of the following subfunctions:
- Function sequence for "antitheft alarm system" (with code (551) Antitheft alarm system (ATA [EDW]))
- Function sequence for vehicle theft telephone message from vehicle owner to police and then to Service Center
- "Tracking" function sequence

Function requirements for "antitheft alarm system" (with code (551) Antitheft alarm system (ATA [EDW]))
- Antitheft alarm system (ATA [EDW]) active for t > 30 s

Function sequence for "antitheft alarm system" (with code (551) Antitheft alarm system (ATA [EDW]))
If the antitheft alarm system is triggered, the emergency call system control unit receives an "ATA [EDW] alarm" message in the following way:
- Rear SAM control unit with fuse and relay module (N10/2)
- Interior CAN (CAN B)
- Front SAM control unit with fuse and relay module (N10/1)
- Diagnostic CAN (CAN D)

The "ATA [EDW] alarm" message is transmitted by the communication module integrated into the emergency call system control unit to the Service Center over the following path:
- Direct line
- Frequency switchover control unit (N96), with code (389) Mobile phone preinstallation with universal interface USA/Canada, and direct line
- Multifunction antenna

The Service Center receives the "ATA [EDW] alarm" message and advises the vehicle owner by telephone that the ATA [EDW] alarm has been triggered. "Vehicle tracking" not yet triggered by the Service Center.

Function requirements for vehicle theft telephone message from vehicle owner to police and then to Service Center
- Vehicle owner notices that vehicle has been stolen

Function sequence for vehicle theft telephone message from vehicle owner to police and then to Service Center
If the vehicle owner has been informed by the Service Center that his/her vehicle has been stolen or if the vehicle owner himself/herself notices that the vehicle has been stolen, it is first necessary for the vehicle owner to report the theft to the police. The vehicle owner receives a special number from the police, which confirms that the vehicle theft has been reported.
With this number, the vehicle owner can report to the Service Center, by telephone, and give this number to the employee there. The Service Center checks the request and legitimation (authorization) of the vehicle owner.

Function requirements for "tracking"
- Vehicle reported as stolen by vehicle owner, by telephone, to police and then to Service Center as well as legitimation (authorization) by Service Center

Function sequence for "tracking"
After reporting the theft to the Service Center and legitimation (authorization) by the Service Center, an initiation command is sent to the vehicle.

The initiation command is received by the communication module integrated into the emergency call system control module over the following path:
- Multifunction antenna
- Direct line
- Frequency switchover control unit, with code (389) Mobile phone preinstallation with universal interface USA/Canada, and direct line

The emergency call system control unit then activates the GPS position finding and also the voice connection to the vehicle, if necessary. Then the communication module integrated into the emergency call system control unit sends the position data to the service provided in the same manner as the "ATA [EDW alarm" message.

The position data is transmitted cyclically and for the following events:
- Exceeding a certain distance
- Circuit 15 ON or circuit 15 OFF (switching the ignition on or off)

The Service Center forwards the location of the vehicle to the responsible command staff (e.g. police). The command staff can then decide whether or not to speak to the driver.

Vehicle tracking can only be deactivated by the Service Center.

Function requirements for breakdown assistance
- Triggering of breakdown assistance through pressing the breakdown assistance button (S93/6s2) for t > 2 s

Roadside assistance
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 now take further vehicle-specific data into consideration to initiate effective assistance measures.

After reading in the breakdown assistance button, the emergency call system control unit sets up a voice connection to the Service Center. The emergency call system receives the signal from the breakdown systems button from the emergency call system control unit over a direct line.

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 via the integrated communication module:
- Vehicle position
- Customer identification data
- Vehicle identification data

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

The communication module integrated into the emergency call system control unit transmits and receives the mobile phone signals via the following route:
- Direct line
- Frequency switchover control unit (N96), with code (389) Mobile phone preinstallation with universal interface USA/Canada, and direct line
- Multifunction antenna

The light emitting diode integrated into the breakdown assistance button flashes as long as the breakdown assistance is active. This is also indicated in the instrument cluster (A1) and on the Audio/COMAND display (A40/8).

In the event of a breakdown assistance instance, the Service Center can transmitted with navigation data to the vehicle if necessary. The data are made available to the navigation module of the COMAND controller unit (with code (512) COMAND APS with DVD changer).

Function requirements for MB-Info
- Triggering of an MB-Info call through pressing the MB-Info button (S93/6s1) for t > 2 s

MB Information service
The MB-Info call function enables the driver to call up information on Mercedes-Benz brand products as well as further voice-based services (e.g. hotel booking). This vehicle-related service is primarily an oral information service that is provided via the communications module integrated into the emergency call system control unit.

In the event of an MB-Info call, other vehicle-related services with lower priority (e.g. vehicle remote door unlock) are interrupted.

The emergency call system receives the signal from the MB info button from the emergency call system control unit over 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 to the Service Center over the integrated communication module:
The automatic SMS of the emergency call system control unit to the Service Center contains the following data:
- 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 via the following route:
- Direct line
- Frequency switchover control unit, with code (389) Mobile phone preinstallation with universal interface USA/Canada, and direct line
- Multifunction antenna

The MB-Info button's integrated light emitting diode flashes as long as the MB-Info call is activated. This is also indicated in the instrument cluster and on the Audio/COMAND display.

In the event of an MB-Info call instance, the Service Center can transmitted with navigation data to the vehicle if necessary. The data are made available to the navigation module of the COMAND controller unit (with code (512) COMAND APS with DVD changer).

Function requirements for vehicle remote door unlock
- Telephone request for vehicle remote door unlock with legitimation (authorization) at the Service Center
- Actuation of trunk lid external operation switch (S88/8) (model 204.0/3) or liftgate external operation switch (S88/8) (model 204.9) for at least t = 15 s at a time agreed with the Service Center

Vehicle remote unlocking
The vehicle remote door unlock function enables the driver to have the Service Center remotely unlock his/her vehicle, e.g. if he/she has left the transmitter key (A8/1) in the vehicle and a second transmitter key is not available.

The actuation of the trunk lid external operation switch (model 204.0/3) or liftgate external operation switch (model 204.9) is received by the emergency call system control unit via the following route:
- Direct line
- Rear SAM control unit with fuse and relay module
- Interior CAN
- Front SAM control unit with fuse and relay module
- Diagnostic CAN

The emergency call system control unit then automatically transmits an SMS with the following data to the Service Center, via the communication module integrated into emergency call system control unit:
- Vehicle position
- Customer identification data
- Vehicle identification data

The communication module integrated into the emergency call system control unit transmits the mobile phone signals via the following route:
- Direct line
- Frequency switchover control unit, with code (389) Mobile phone preinstallation with universal interface USA/Canada, and direct line
- Multifunction antenna

The Service Center compares the data sent with the request and driver legitimization and, if the data matches, a "vehicle remote door unlock request" is sent to the vehicle.

The communication module integrated into the emergency call system control unit receives the "Vehicle remote door unlock request" and the mobile phone signals over the following path:
- Multifunction antenna
- Direct line
- Frequency switchover control unit, with code (389) Mobile phone preinstallation with universal interface USA/Canada, and direct line

After receiving the "vehicle remote door unlock request", the emergency call system control unit sends the request over the diagnostic CAN to the electronic ignition lock control unit.

The electronic ignition lock control unit then unlocks all vehicle doors as well as the trunk lid or liftgate.

The execution of the vehicle remote door unlock is displayed by a message in the instrument cluster. In addition, the red light-emitting diodes in the emergency call system button flash (S93/3).

If the "Vehicle remote door unlock request" is refused by the Service Center because, for example, the external operation switch was not actuated at the time agreed on or legitimization was incorrect, the vehicle remote door unlock function is disabled for t = 15 min.

In the event of poor reception or a multifunction antenna malfunction (e.g. defective because of rollover) the emergency call system control unit automatically uses the emergency call system antenna to transmit mobile phone signals.

Function requirements for vehicle remote door lock
- Telephone request for vehicle remote door lock with legitimation (authorization) at the Service Center

Vehicle remote locking
The vehicle remote door locking function enables the driver to lock his/her vehicle remotely through a Service Center if he/she has forgotten to lock the vehicle.
The Service Center checks the request and legitimation (authorization) of the driver. If the data matches, the Service Center issues a "vehicle remote door lock request" to the vehicle.
The "vehicle remote door lock request" is received by the communication module integrated into the emergency call system control unit via the following route:
- Multifunction antenna
- Direct line
- Frequency switchover control unit, with code (389) Mobile phone preinstallation with universal interface USA/Canada, and direct line

After receiving the "vehicle remote locking request", the emergency call system control unit sends the request to the electronic ignition lock control unit (N73) via the following route:
- Diagnostic CAN
- Front SAM control unit with fuse and relay module
- Interior CAN

The electronic ignition lock control unit then checks whether the locking of all vehicle doors and the locking of the liftgate is possible. If the vehicle doors and the liftgate can be locked, the EZS control unit initiates the locking process.

Transmission of navigation data
Destination entries or points of interest (POI) can be made available by the Service Center to the navigation module of the COMAND controller unit (A40/3) (with code (512) COMAND APS with DVD changer).

If the transmission of navigation data on vehicles except code (512) COMAND APS with DVD changer has been actuated, a message is shown on the Audio/COMAND display stating that the required action could not be performed.

Navigation data are transmitted either as part of an emergency call, a breakdown assistance or an MB-Info call (prioritization matches each currently active service). Or this occurs because the vehicle owner has sent the navigation data over the Internet to the service provider (lowest priority).

The Service Center sends the navigation data by mobile phone signals to the COMAND controller unit via the following route:
- Multifunction antenna
- Direct line
- Frequency switchover control unit, with code (389) Mobile phone preinstallation with universal interface USA/Canada, and direct line
- Emergency call system control unit
- Diagnostic CAN
- Front SAM control unit with fuse and relay module
- Interior CAN

More information on starting the navigation is available in the system description for the COMAND controller unit.