Mercedes-Benz S 450 4MATIC, Operator'S Manual

Page: 83 / 801

82
Safety and Security
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
When leaving the vehicle, always take the
SmartKey or SmartKey with KEYLESS-GO*
with you, and lock the vehicle. The engine
can be started by anyone with a valid
SmartKey or SmartKey with KEYLESS-GO*
that is left inside the vehicle.
Activating
왘
With the SmartKey: Remove the
SmartKey from the starter switch.
왘 With the KEYLESS-GO*: Turn off the
engine ( 컄 page 372) and open the driv-
er’s door.
Deactivating
왘
Switch on the ignition (
컄
page 370).
Anti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens:
앫
a door
앫
the trunk
앫
the hood
The alarm will stay on even if the activating
element (a door, for example) is immedi-
ately closed.
The alarm system will also be triggered
when
앫
the vehicle is opened with the
mechanical key
앫
a door is opened from the inside
To cancel the alarm after it has been trig-
gered, see “Canceling the alarm”
(
컄
page 83).
i
Starting the engine will also deactivate the
immobilizer.
In case the engine cannot be started (yet the ve-
hicle’s battery is charged), the system is not op-
erational. Contact an authorized Mercedes-Benz
Center or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).