Mercedes-Benz 2005 C 230 Kompressor Operator's Manual page 237

Controls in detail
Audio system
Placing a "911" emergency call using
audio head unit with the phone un-
locked
Press h button to switch to tele-
phone operation.
Enter 911 using the number keypad on
the audio head unit.
Press s button for dialing to begin.
DIALING appears in the audio display
while the telephone establishes the
connection.
Wait until the emergency call center
answers, then describe the emergency.
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