GL 320 BLUETEC (164.825) V6-3.0L DSL Turbo (642.820) (2009)
13
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Central gateway control unit
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Engine compartment CAN
The following components are checked each over a discrete line:
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TELE AID backup antenna
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GPS antenna splitter, with code (512) COMAND APS including DVD changer
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Restraint systems control unit
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TELE AID antenna
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GPS antenna
If a malfunction is not present, the two red LEDs integrated into the SOS pushbutton switch extinguish after approx. 4 s signaling that the emergency call
system is ready for operation.
If a malfunction is present, the two red LEDs integrated into the SOS pushbutton switch are actuated continuously by the emergency call system control
unit over a discrete 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:
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Diagnostic CAN
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Central gateway control unit
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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 over a discrete line. This is also displayed in the instrument cluster and on the
display on the COMAND operating, display and controller unit. This is displayed on the instrument cluster over the following path:
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Diagnostic CAN
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Central gateway control unit
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Interior CAN
This is displayed on the COMAND operating, display and controller unit over the following path:
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Diagnostic CAN
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Central gateway control unit
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Interior CAN
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 over a discrete line. This is also displayed in the instrument cluster and on the display on
the COMAND operating, display and controller unit. This is displayed on the instrument cluster over the following path:
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Diagnostic CAN
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Central gateway control unit
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Interior CAN
This is displayed on the COMAND operating, display and controller unit over the following path:
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Diagnostic CAN
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Central gateway control unit
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Interior CAN
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 telediagnosis button, the emergency call system control unit actuates the LED integrated into
the telediagnosis button intermittently over a discrete line. This is also displayed in the instrument cluster and on the display on the COMAND operating,
display and controller unit.
This is displayed on the instrument cluster over the following path:
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Diagnostic CAN
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Central gateway control unit