Emergency calls:911 calls, Emergency calls “911 – Mercedes-Benz 2006 C-Class User Manual
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Controls in detail
Audio system
Placing a second call
If you wish to place another call during an 
already active call, you can place the 
second call and switch between the callers 
or combine them into one call. Note that 
this feature is dependent on availability 
from your mobile phone service provider. 
ț
Placing a second call
̈
Place a new call by entering 
telephone number manually.
̈
Press
s button.
You are connected to the second 
caller; the first caller is kept on 
hold.
ț
Terminating a call
̈
Press
t button.
The current call is terminated. The 
connection to the caller previously 
kept on hold is also interrupted; 
however, reconnection is indicated 
by an acoustic signal.
ț
Combining two calls
̈
Press
s button.
The calls are combined into one 
call.
ț
Terminating a combined call
̈
Press
t button.
The connection to both callers is 
terminated.
Emergency calls “911”
The following describes how to dial a “911” 
emergency call using the audio system 
head unit when a Mercedes-Benz specified 
mobile phone* is inserted in the phone 
cradle*. Unless otherwise specified, the 
descriptions refer to the audio system 
head unit. 
Consult the separate telephone operating 
instructions that came with your mobile 
phone* for information on how to place a 
“911” emergency call on the mobile 
phone*. 
Warning!
G
The “911” emergency call system is a public
service. Using it without due cause is a crim-
inal offense.