Telematics services communications module, component description - GF82.85-P-0220FLM

MODEL 212 with CODE 350 (Ecall emergency call system, Europe)

MODEL 212 with CODE B54 (Live Traffic Information)

Shown on model 212.0 with CODE B54 (Live Traffic Information) as of 02.03.2015

Fig 1: Telematics Services Communications Module - Shown On Model 212.0 With Code B54

Courtesy of MERCEDES-BENZ USA

Shown on model 212.0 except CODE B54 (Live Traffic Information) as of 02.03.2015

Fig 2: Telematics Services Communications Module - Shown On Model 212.0 Except Code B54

Courtesy of MERCEDES-BENZ USA

Shown on model 212.0 with CODE B54 (Live Traffic Information) up to 01.03.2015

Fig 3: Telematics Services Communications Module - Shown On Model 212.0 With Code B54 Up To 01.03.2015

Courtesy of MERCEDES-BENZ USA

Location

The telematics services communication module is located in the trunk under the floor mat on the crossmember.

Tasks

The telematics services communications module establishes the connection to the service provider and controls the functions connected to the telematics services in the vehicle.

During navigation with real-time traffic data (with CODE B54 (Live Traffic Information)), the telematics services communications module has the following tasks:

Via the emergency call system antenna (A2/52), the telematics services communications module receives real-time traffic data from the service provider and forwards it via a USB (Universal Serial Bus) connection to the COMAND controller unit (A40/3) (with CODE 531 (COMAND APS)).
The telematics services communications module receives position data from the COMAND controller unit via a USB connection and sends it to the service provider via the emergency call system antenna.

In the emergency call system (with CODE 350 (Ecall Europe emergency call system)), the telematics services communications module has the following tasks:

Self-diagnosis
Prioritization of the services in the internal arithmetic unit
Receiving and transmitting operating, status and control signals from and to the emergency call system button (S93/3) (input and output)
Establishing a voice or data link to the service provider via the emergency call system antenna (input and output)
Transmitting a mute signal to the sound system amplifier control unit (N40/3) (with CODE 810 (Sound system) or with CODE 811 (Advanced Sound System)) or to the audio equipment (except CODE 810 (Sound system) and except CODE 811 (Advanced Sound System)) (output)
Receiving the microphone signals from the audio equipment (input) during hands-free mode
Sending audio signals in hands-free mode to the center instrument panel speaker (H4/27) (output)
Receiving GPS (Global Positioning System) data for position finding from the multifunction antenna (A28/11) (except CODE 357 (SD card navigation, except CODE 522 (Audio 20 radio) and except CODE 531 (COMAND APS)) (input)
CAN communication via the diagnostic CAN (CAN D) with the front SAM control unit with fuse and relay module (N10/1)

With the emergency call system (with CODE 350 (Ecall Europe emergency call system)), the telematics services communications module can receive the following CAN signals, among others, via the front SAM control unit with fuse and relay module:

Status of "circuit 15 R" from the electronic ignition lock control unit (N73) as trigger signal for self-diagnosis of the emergency call system
Cyclic standby signal ("vital sign") of the supplemental restraint system control unit (N2/10) as a check signal
Crash signal from supplemental restraint system control unit as trigger signal for the automatic emergency call
"Central locking emergency opening" signal from the front SAM control unit with fuse and relay module as a redundant trigger signal for the automatic emergency call
Control signals of the button groups on the multifunction steering wheel from the instrument cluster (A1) (e.g. volume control, muting, establish or disconnect connection)
Signals of the steering angle sensor (N49) from the steering column tube module control unit (N80), for position finding
Wheel speed signals from the Electronic Stability Program control unit (N30/4) (except model 212.095/195/098/298 and except CODE 233 (DISTRONIC PLUS)), from the regenerative braking system control unit (N30/6) (model 212.095/195/098/298) or from the Premium Electronic Stability Program control unit (N30/7) (with CODE 233 (DISTRONIC PLUS)), for position finding
Position data from the audio equipment (with CODE 357 (SD card navigation), with CODE 522 (Audio 20 radio) or with CODE 531 (COMAND APS)), for position finding

The telematics services communications module can send, e.g. the following CAN signals in the emergency call system (with CODE 350 (Ecall Europe emergency call system)):

Display messages for display on the Audio/COMAND display (A40/8) to the audio equipment

Variants

The telematics services communications module is installed in the following variants:

In vehicles up to 01.03.2015, the telematics services communications module does not have an antenna input for receiving GPS signals.
In vehicles as of 02.03.2015 except CODE B54 (Live Traffic Information), the telematics services communications module does not have a USB connection to the audio equipment.

Wiring diagram for telematics services communications module control unit

N112/2

PE82.85-P-2105-97DAA