Mercedes-Benz C-class Operator's Manual page 192

Emergency call
Important!
If you press button
number stored in memory location 1 (for example 911)
will be dialed.
The 911 emergency call system is a public service.
Using it without due cause is a criminal offence.
You can make an emergency call to an emergency
rescue station with a mobile communications network.
The emergency call will be placed as long as the
corresponding mobile communications network is
available. To do this, switch the telephone on if you have
not already done so.
The call will also be placed if the unlock-code is not
entered.
Audio system
Instruments
Operation
and controls
for more than 1 second, the
Instrument
Driving
cluster display
Emergency calls may not be possible with all telephone
networks or if certain network services and/or
telephone functions are active. Check with your local
network operating company. It may take some time to
set up an emergency call.
To use this function you must ensure that the number
stored in memory location 1 is the number to be dialed
in case of emergency.
Note:
183
Practical hints Car care
If an emergency call cannot be
connected, the message
"SYSTM BUSY" appears.
Technical
data
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