2008 MERCEDES-BENZ R320 stop start

106 Safety and Security
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 position2 (
page 39).
With KEYLESS-GO*
Switch on the ignition (page 39).
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”
(
page 474)

a door is opened from the inside, see
“Opening the doors from the inside”
(
page 118)
iStarting 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).

107 Safety and Security
Anti-theft systems
Arming the alarm system
The alarm system indicator lamp is located
to the lower left of the hazard warning
flasher.
1Alarm system indicator lamp
Lock the vehicle with the SmartKey or
with KEYLESS-GO* (
page 67).
The turn signal lamps flash three times
to indicate that the vehicle is locked.
Alarm system indicator lamp 1 starts
flashing.
Disarming the alarm system
Unlock the vehicle with the SmartKey
or with KEYLESS-GO* (
page 38).
The turn signal lamps flash once to
indicate that the vehicle is disarmed.
Alarm system indicator lamp 1 goes
out.Canceling the alarm
With the SmartKey
Insert the SmartKey in the starter
switch.
or
Press theŒ or ‹button on the
SmartKey.
With KEYLESS-GO*
Grasp an outside door handle.
The SmartKey with KEYLESS-GO must
be within 3 ft (1 m) of the vehicle.
or
Press the KEYLESS-GO start/stop
button (
page 41).
The SmartKey with KEYLESS-GO must
be inside the vehicle.
iIf the alarm stays on for more than
30 seconds, a call to the Response Center is
initiated automatically by the Tele Aid* system
(
page 322) provided that the Tele Aid* service
was subscribed to and properly activated, and
that necessary cellular service and GPS cover-
age are available.
iIf the turn signal lamps do not flash three
times, one of the following elements may not be
properly closed:

a door

the tailgate
Close the respective element and lock the
vehicle again.
iThe alarm system will rearm automatically
again after approximately 40 seconds if neither a
door nor the tailgate is opened.

115 Controls in detail
Locking and unlocking
Important notes on using KEYLESS-GO*

You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
(
page 110).

You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with the ‹button).

Always carry the SmartKey with
KEYLESS-GO with you.

Never store the SmartKey with
KEYLESS-GO together with

electronic items such as a cellular
phone or another SmartKey with
KEYLESS-GO

metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.

To lock or unlock the vehicle, the
SmartKey with KEYLESS-GO must be
located outside the vehicle within
approximately 3 ft (1 m) of the respec-
tive door or the tailgate.

If the vehicle has been parked for more
than 72 hours, you must pull an outside
door handle in order to activate the
KEYLESS-GO function

In order to start the engine with the
SmartKey with KEYLESS-GO:

The SmartKey with KEYLESS-GO
must be located in the vehicle.

The KEYLESS-GO start/stop button
must be inserted in the starter
switch (
page 41).

The brake pedal must be firmly
depressed. Do not depress the
accelerator.

If the SmartKey with KEYLESS-GO is
positioned farther away from the vehi-
cle, the system may no longer recog-
nize the SmartKey with KEYLESS-GO.
The vehicle then cannot be locked or
the engine started via the KEYLESS-GO
system.

If you have started the engine with the
KEYLESS-GO start/stop button
(
page 54), you can turn it off again by

pressing the KEYLESS-GO
start/stop button (
page 66)

inserting the SmartKey into the
starter switch when the vehicle is at
a standstill and the automatic
transmission is in position P
(
page 66)

116 Controls in detail
Locking and unlocking

If the SmartKey with KEYLESS-GO is
removed from the vehicle (e.g. if a
passenger exits the vehicle with the
SmartKey with KEYLESS-GO)

when pressing the KEYLESS-GO
start/stop button or trying to lock
the vehicle with the lock button on
an outside door handle, the mes-
sage
Key Not Detected appears in
the multifunction display

with the engine running, the mes-
sage
Key Not Detected appears in
the multifunction display while
driving off
Find the SmartKey with KEYLESS-GO
or change its present location immedi-
ately (e.g. place it on the front passen-
ger seat or insert it in shirt pocket).

Remember that the engine can be
started by anyone with a SmartKey
with KEYLESS-GO that is left inside the
vehicle.
Possibility 1: (One SmartKey with
KEYLESS-GO in the vehicle, one
SmartKey with KEYLESS-GO outside
the vehicle):
If you leave the SmartKey with
KEYLESS-GO behind when exiting and
locking the vehicle, no message
appears in the multifunction display.
Possibility 2: (One SmartKey with
KEYLESS-GO in the vehicle, no
SmartKey with KEYLESS-GO outside
the vehicle):
When exiting and trying to lock the
vehicle, the message
Key Detected In
Vehicle
will appear in the multifunction
display. The vehicle will not be locked.Factory setting
Global unlocking
Grasp an outside door handle.
All turn signal lamps flash once. The
locking knobs in the doors move up.
The anti-theft alarm system is dis-
armed.
The vehicle will lock again automatically
and rearm the anti-theft alarm system
within approximately 40 seconds of
unlocking if

neither door nor tailgate is opened

the central locking switch is not
activated
iThe vehicle could be inadvertently unlocked
if the SmartKey with KEYLESS-GO is within
3ft(1m) of the vehicle and

an outside door handle is splashed
with water
or

you attempt to clean an outside door handle

119 Controls in detail
Locking and unlocking
Front doors
Pull on inside door handle2 on the
respective front door to open door.
If the door was locked, locking knob1
will move up.
Rear doors
Pull up locking knob1 on the respec-
tive rear door to unlock door.
Pull on inside door handle2 on the re-
spective rear door to open door.
Tailgate/Power tailgate*
A minimum height clearance of
7.2 ft (2.20 m) is required to open the
tailgate.iIf the vehicle has previously been locked
from the outside with the SmartKey or with
KEYLESS-GO*, opening a door from the inside
will trigger the anti-theft alarm system.
To cancel the alarm, do one of the following:
With the SmartKey

Insert the SmartKey in the starter switch.

Press theŒ or ‹button on the
SmartKey.
With KEYLESS-GO*

Grasp an outside door handle.

Press the KEYLESS-GO start/stop button
(
page 41).
The SmartKey with KEYLESS-GO must be
inside the vehicle.
Warning!G
Make sure the tailgate is closed when the
engine is running and while driving.
Among other dangers, deadly carbon
monoxide (CO) gases may enter vehicle
interior resulting in unconsciousness and
death.
!The tailgate swings open upwards automat-
ically. Always make sure there is sufficient over-
head clearance.

123 Controls in detail
Locking and unlocking
Limiting opening height of tailgate*
In vehicles with power tailgate*, the tail-
gate opening height can be limited when
transporting goods on a roof rack*
(e.g. presence of an MB sport luggage
container*). When activated, the tailgate
opens to approximately 6.4 ft (1.95 m).
Activate the limiting opening height of
tailgate using the control system
(
page 183).
Closing the tailgate from the inside
You can close the tailgate from the inside
using the remote tailgate switch.
If the tailgate comes into contact with an
object while closing (e.g. luggage that has
been piled too high) the closing procedure
is stopped and the tailgate reopens.
Press remote tailgate switch1
(
page 122) until tailgate begins to
close.
The tailgate closes. While the tailgate is
closing an acoustic signal sounds.
To interrupt the closing procedure:
Press or pull remote tailgate switch1
(
page 122).
Warning!G
Maintain sight of the area around the rear of
the vehicle while operating the tailgate with
the door-mounted switch. Monitor the
closing procedure carefully to make sure no
one is in danger of being injured.
To interrupt the closing procedure, press or
pull the door-mounted remote tailgate
switch or press the Šbutton on the
SmartKey or SmartKey with KEYLESS-GO*.
Even with the SmartKey or the SmartKey
with KEYLESS-GO* removed from the
starter switch or the SmartKey with
KEYLESS-GO* removed from the vehicle,
the remote tailgate switch can be operated.
Therefore, do not leave children unattended
i n t h e v e h i c l e , o r w i t h a c c e s s t o a n u n l o c k e d
vehicle. A child’s unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.

124 Controls in detail
Locking and unlocking
Closing the tailgate from the outside
You can close the tailgate from the outside
using the tailgate closing switch or
theŠbutton on the SmartKey or
SmartKey with KEYLESS-GO*.
In vehicles with KEYLESS-GO*, you can
also simultaneously lock the vehicle.
If the tailgate comes into contact with an
object while closing (e.g. luggage that has
been piled too high), the closing procedure
is stopped and the tailgate reopens.
Vehicles without KEYLESS-GO*
1Tailgate closing switch
Vehicles with KEYLESS-GO*
1Tailgate closing switch
Press tailgate closing switch1 or the
Šbutton on the SmartKey or
SmartKey with KEYLESS-GO* briefly.
The tailgate closes and an acoustic
warning sounds.
Warning!G
Monitor the closing procedure carefully to
make sure no one is in danger of being in-
jured. To prevent possible personal injury,
always keep hands and fingers away from
the cargo compartment opening when clos-
ing the tailgate. Be especially careful when
small children are around. To stop the clos-
ing procedure, do one of the following:

Press tailgate closing switch1
(
page 124).

Press KEYLESS-GO locking/closing
switch* 1 (
page 125).

Press the Šbutton on the SmartKey
(
page 110) or SmartKey with
KEYLESS-GO* (
page 113).

Press or pull the remote tailgate switch
on the driver’s door (
page 122).
Even with the SmartKey removed from the
starter switch or the SmartKey with
KEYLESS-GO* removed from the vehicle,
the tailgate closing switch can be operated.
Therefore, do not leave children unattended
in the vehicle, or with access to an unlocked
vehicle. A child’s unsupervised access to a
vehicle could result in an accident and/or
serious personal injury.

128 Controls in detail
Seats
For information on seat adjustment, see
the “Getting started” section (
page 44).
For more information on folding the seats,
see “Loading” (
page 288).
Easy-entry/exit feature
Easy-entry/exit feature for driver’s
seat*
This feature allows for easier entry into and
exit from the vehicle. When entering and
exiting the vehicle, the steering wheel is in
its uppermost position.
The easy-entry/exit feature can be
activated or deactivated in the
Comfort
submenu of the control system
(
page 184).With the easy-entry/exit feature activated,
the steering wheel will return to the last set
position when you

close the driver’s door with the ignition
switched on
or

insert the SmartKey into the starter
switch or press the KEYLESS-GO*
start/stop button (
page 41) once
with the driver’s door closed
Warning!G
You must make sure no one can become
trapped or injured by the moving steering
wheel when the easy-entry/exit feature is
activated.
To stop steering wheel movement, do one of
the following:

Move steering wheel adjustment stalk*
(
page 47).

Press one of the stored position
buttons* or memory buttonM*
(
page 141).
Do not leave children unattended in the ve-
hicle, or with access to an unlocked vehicle.
Children could open the driver’s door and
unintentionally activate the easy-entry/exit
feature, which could result in an accident
and/or serious personal injury.
iThe last set steering wheel position is
stored when

the ignition is switched off (page 39)

the position is stored into memory
(
page 142)