CL 550 4MATIC (216.386) V8-5.5L (273.961) (2009)
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Central CAN
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COMAND controller unit
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LVDS line
Function requirements for emergency call system status for MB-Info call
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Circuit 30
Function sequence for emergency call system status for MBInfo call
After triggering the MB-Info call using the MB-Info button, the emergency call system control unit intermittently actuates the red LED integrated into
the MB-Info button via a direct line. The LED flashes during the actuation period. This is also indicated in the instrument cluster and on the COMAND
display.
This is displayed on the instrument cluster via the following route:
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Diagnostic CAN
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Central gateway control unit
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Central CAN
The display on the COMAND screen is transmitted via the following route:
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Diagnostic CAN
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Central gateway control unit
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Central CAN
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COMAND controller unit
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LVDS line
Function requirements for emergency call system status for vehicle remote door unlock
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Circuit 30
Function sequence for emergency call system status for vehicle remote door unlock
After the vehicle remote door unlock feature has been triggered by a telephone call to the service center, the emergency call system control unit actuates
the red LED integrated into the SOS push button intermittently via a direct line after actuating the trunk lid external operation switch (S88/8).Moreover,
the emergency call system control unit displays the message on the instrument cluster via the following route:
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Diagnostic CAN
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Central gateway control unit
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Central CAN
Function sequence for emergency call system status for vehicle remote door lock
After the vehicle remote door lock feature has been triggered by a telephone call to the service center, the emergency call system control unit actuates the
red LED integrated into the SOS push button intermittently via a direct line. The emergency call system control unit also displays the message in the
instrument cluster after actuating the transmitter key (A8/1) via the following route:
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Diagnostic CAN
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Central gateway control unit
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Central CAN
Component Identification