Mercedes Benz 2007 r 320 cdi User Manual

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Safety and Security
Anti-theft systems
Anti-theft systems
Immobilizer
The immobilizer prevents unauthorized 
persons from starting your vehicle.
Activating
With the SmartKey
Remove the SmartKey from the starter 
switch.
With KEYLESS-GO*
Press the KEYLESS-GO start/stop 
button (
page 41) once.
The engine is turned off.
Open the driver’s door.
Deactivating
With the SmartKey
Turn the SmartKey in the starter switch 
to position 2 (
With KEYLESS-GO*
Switch on the ignition (
Anti-theft alarm system
Once the alarm system has been armed, a 
visual and audible alarm is triggered when 
someone opens
a door
the tailgate
the hood
The alarm will stay on, even if the activat-
ing element (a door, for example) is imme-
diately closed.
The alarm system will also be triggered 
when
the vehicle is opened with the mechan-
ical key, see “Unlocking the vehicle” 
(
a door is opened from the inside, see 
“Opening the doors from the inside” 
(
i
Starting the engine will also deactivate the 
immobilizer.
In case the engine cannot be started (yet the 
vehicle’s battery is charged), the system is not 
operational. Contact an authorized 
Mercedes-Benz Light Truck Center or call
1-800-FOR-MERCedes (in the USA), or 
1-800-387-0100 (in Canada).