Mercedes-Benz S-Class 2009 - Manual (Page 81)

Anti-theft systems
79
i PRE-SAFE ® Brake will remain passive
while DISTRONIC Plus is switched on
(
Y page 360).
After a hard collision or damage to the front
of the vehicle from an accident, have the
settings and operation of the radar sensors
checked by an authorized Mercedes-Benz
Center.
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized
persons from starting your vehicle.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle.
Activating
X With SmartKey: Remove the SmartKey
from the starter switch.
X With KEYLESS-GO: Turn off the engine and
open the driver’s door.
Deactivating
X Switch on the ignition.
i Starting the engine will also deactivate
the immobilizer.
In the event that the engine cannot be
started (yet the vehicle’s battery is
charged), the system is not operational.
Contact an authorized Mercedes-Benz
Center or call 1-800-FOR-MERCedes (in the
USA), or 1-800-387-0100 (in Canada).
Anti-theft alarm system
Once the alarm system has been armed, a
visual and audible alarm is triggered when
someone opens
R a door
R the trunk
R the hood
The alarm will stay on even if the activating
element (a door, for example) is immediately
closed.
The alarm system will also be triggered when
R the vehicle is opened with the mechanical
key
R a door is opened from the inside
To cancel the alarm after it has been
triggered, see “Canceling the
alarm” (
Y page 80).
i If the alarm stays on for more than
30 seconds, a call to the Response Center
is initiated automatically by the Tele Aid
system provided that you have subscribed
to the Tele Aid service and that it has been
activated properly, and that the necessary
mobile phone, power supply and GPS
coverage are available.
Safety and security
Z