GL 320 CDI (164.822) V6-3.0L DSL Turbo (642.940) (2008)
Emergency Contact Button: Description and Operation
GF82.95-P-3211GZU MB-Info and Breakdown Assistance Button Group, Component Description
GF82.95-P-3211GZU MB-Info And Breakdown Assistance Button Group, Component Description
- with CODE (359) TELE AID emergency call system
Component Identification
Location
The MB-Info and telediagnosis button group is located in the center console to the right of the UPCI portable CTEL holder (Universal Portable CTEL
Interface) (A34/15).
The telematics service must be authorized.
Design
The MB-Info and telediagnosis button group is designed as follows:
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2 integrated LEDs for night illumination (c. 58d)
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2 integrated LEDs for display of operating status (roadside assistance call and MB-Info call)
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Both buttons have a control resistor in parallel to the switch contact
Task
Either a roadside assistance call or MB-Info call be actuated with the MB-Info-and telediagnosis button group. Moreover, the current operating state is
indicated to the driver by the 2 integrated LEDs.
Function
In the park position, electric current flows through the control resistor installed in the MB-Info and telediagnosis pushbutton switch (parallel to switch
contacts). When current is flowing through the resistor, the emergency call system control unit (N123/4) knows that the voltage supply line and the
ground line are functioning properly. When one of the buttons in the MB-Info and telediagnosis button group is pressed, the control resistor is bridged by
the switch contact. The MB-Info and telediagnosis button group is read in by the emergency call system control unit over 2 discreet lines. When one of
the buttons is pressed, the emergency call system control unit transmits the corresponding request. The emergency call system control unit then actuates
the LED for visual indication that the function has been actuated.