C 300 (204.054) V6-3.0L (272.947) (2008)
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Status "circuit 15R ON" in quiescent state and for automatic TELE AID emergency call (E-call)
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TELE AID system authorized and operating error-free
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The listed vehicle-related services are separately authorized
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The customer is registered and authorized in the Customer Assistance Center (CAC)
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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
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A mobile telephone network is available in adequate strength and quality
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Triggering of correspondingly listed vehicle-related services
The triggering of correspondingly listed vehicle-related services is described in greater detail in each respective subfunction.
Depending on equipment installed one of the following control units is installed:
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COMAND controller unit (A40/3), with code (512) COMAND APS with DVD changer
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Radio (A2), with code (494) USA version
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Radio, with code (510) Audio 20 with CD changer
The function description uses the term "master control unit".
General
The two red light emitting diodes (LED) integrated into the emergency call system button (S93/3) are used to indicate the following actions:
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TELE AID system self-test
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Operational readiness of TELE AID system
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Automatic or manual TELE AID emergency call active
Faults in the TELE AID system are also displayed in the instrument cluster (A1) depending on the fault type.
The LED integrated into the breakdown assistance button (S93/6s2) flashes when breakdown assistance is active.
The LED integrated into the MB-Info button (S93/6s1) flashes when an MB-Info call is active.
The vehicle remote door unlock is executed by means of a message in the instrument cluster.
In the event of breakdown assistance and an MB-Info call, additional services, e.g. Freetext (transmission of text messages), are also shown on the
Audio/COMAND display (A40/8). This is sent from the emergency call system control unit to the Audio/ COMAND display in the following way:
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Diagnostic CAN
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Front SAM control unit with fuse and relay module (N10/1)
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Interior CAN
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"Master control unit"
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Low Voltage Differential Signaling (LVDS) line
The TELE AID status display function is made up of the following subfunctions:
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TELE AID system status in quiescent state function sequence
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TELE AID system status function sequence for automatic TELE AID emergency call
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TELE AID system status function sequence for manual TELE AID emergency call
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TELE AID system status for breakdown assistance function sequence
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TELE AID system status for MB-Info call function sequence
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TELE AID system status for vehicle remote door unlock function sequence
TELE AID system status in quiescent state function sequence
As soon as the "circuit 15R ON" status is achieved the two red LEDs integrated into the emergency call system button light up during the self-test of the
emergency call system control unit for t = 4 s. Actuation takes place from the emergency call system control unit via a discrete line.
This indicates a self-test and testing of the following TELE AID system states:
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Emergency call system control unit power supply
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Functions within the emergency call system control unit (e.g. integrated communication module or memory)
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Authorization of the TELE AID system (e.g. of the communication module integrated into the emergency call system control unit) or the customer
through the CAC
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Communication with the supplemental restraint system control unit (N2/10) and the Electronic Stability Program control unit (N30/4)
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Emergency call system button function (e.g. jammed or open emergency call system button)
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Emergency call system antenna (A2/52)
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Global positioning system antenna splitter function (A2/5), with code (512) COMAND APS with DVD changer
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Multifunction antenna (A28/11)
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Frequency switchover control unit (N96), with code (389) Mobile phone preinstallation with universal interface, USA/ Canada
The "circuit 15R ON" status is received by the emergency call system control unit from the electronic ignition lock control unit (N73) in the following
way:
