2006 MERCEDES-BENZ R350 engine

104 Safety and SecurityAnti-theft systemsImmobilizer
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 40) 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 38).
With KEYLESS-GO*


Switch on the ignition (
page 38).
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 raised, see “Tow-away
alarm” (
page 106)


the vehicle is opened with the mechan-
ical key, see “Unlocking the vehicle”
(page 459)


a door is opened from the inside, see
“Opening the doors from the inside”
(page 121)
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).

116 Controls in detailLocking 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 ap-
proximately 3 ft (1 m) of the respective
door or the tailgate.


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

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


All doors must be closed.


The brake pedal must be firmly de-
pressed. Do not depress the accel-
erator.
iCanada only:
This device complies with RSS-210 of
Industry Canada. Operation is subject
to the following two conditions:
(1) This device may not cause
interference, and
(2) this device must accept any inter-
ference received, including interfer-
ence that may cause undesired
operation of the device.
Any unauthorized modification to this
device could void the user’s authority
to operate the equipment.iYou can also open and close the power
windows (
page 248) and tilt/sliding
sunroof* (page 255), or the
tilt/sliding panel* (
page 259) using
the SmartKey with KEYLESS-GO.

117 Controls in detail
Locking and unlocking


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 the SmartKey with KEYLESS-GO is re-
moved from the vehicle while starter
switch position1(e.g. if a passenger
exits the vehicle with the SmartKey
with KEYLESS-GO), the message
Key
not detected
will appear in the multi-
function display while driving off.
Find the SmartKey with KEYLESS-GO or
change its present location immediate-
ly (e.g. place it on the front passenger
seat or insert it in shirt pocket).


If the SmartKey with KEYLESS-GO is re-
moved from the vehicle with the engine
running (e.g. if a passenger exits the
vehicle with the SmartKey with
KEYLESS-GO), the message
Key not
detected
will appear in the multifunc-
tion display while driving off.
Find the SmartKey with KEYLESS-GO or
change its present location immediate-
ly (e.g. place it on the front passenger
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 ve-
hicle, the message
Key detected in
vehicle
will appear in the multifunc-
tion display. The vehicle will not be
locked.

148 Controls in detailLighting
Manual headlamp mode
The low beam headlamps and the parking
lamps can be switched on and off with the
exterior lamp switch.
Automatic headlamp mode
The following lamps switch on and off au-
tomatically depending on the brightness of
the ambient light:

Low beam headlamps


Tail and parking lamps


License plate lamps


Side marker lamps
iWith the SmartKey removed from the
starter switch and the driver’s door
open, a warning sounds if the parking
lamps or low beam headlamps are
switched on.
The message
Switch off lights

appears in the multifunction display.
iWith the daytime running lamp mode
activated and the engine running, the
low beam headlamps cannot be
switched off manually.
For information on how to activate the
daytime running lamp mode, see “Day-
time running lamp mode”
(page 149).
Warning!
G
If the exterior lamp switch is set toU,

the headlamps may switch off unexpect-
edly when the system senses bright
ambient light, for example light from
oncoming traffic


the headlamps will not be automatically
switched on under foggy conditions
To minimize risk to you and to others,
activate headlamps by turning exterior lamp
switch toB when driving or when traffic
and/or ambient lighting conditions require
you to do so.
In low ambient lighting conditions, only
switch from positionU toB with the
vehicle at a standstill in a safe location.
Switching fromUtoB will briefly
switch off the headlamps. Doing so while
driving in low ambient lighting conditions
may result in an accident.
The automatic headlamp feature is only an
aid to the driver. The driver is responsible for
the operation of the vehicle’s lights at all
times.

149 Controls in detail
Lighting

Turn the exterior lamp switch to
positionU.
With the starter switch in position1
(page 38), only the parking lamps
will switch on and off automatically.
When the engine is running, the low
beam headlamps, the tail and parking
lamps, the license plate lamps, and the
side marker lamps will switch on and
off automatically.Daytime running lamp mode

Turn the exterior lamp switch to
positionM orU.
When the engine is running, the low beam
headlamps are switched on.
In low ambient light conditions, the
following lamps will switch on additionally:


Tail and parking lamps


License plate lamps


Side marker lamps
For nighttime driving you should turn the
exterior lamp switch to positionB to
permit activation of the high beam head-
lamps.Canada only
The daytime running lamp mode is manda-
tory and therefore in a constant mode.
When the engine is running and you shift
from a driving position to positionN orP,
the low beam headlamps will switch off
with a three-minute delay.
When the engine is running and you


turn the exterior lamp switch to
positionC, the parking lamps
switch on additionally


turn the exterior lamp switch to
positionB, the manual headlamp
mode has priority over the daytime
running lamp mode
The corresponding exterior lamps
switch on (
page 58).
iWith the daytime running lamp mode
activated and the exterior lamp switch
in positionM, the high beam head-
lamps cannot be switched on.
The high beam flasher is available at all
times.

150 Controls in detailLightingUSA only
By default, the daytime running lamp mode
is deactivated. Activate the daytime
running lamp mode using the control
system, see “Setting daytime running lamp
mode (USA only)” (
page 182).
When the engine is running, and you turn
the exterior lamp switch to positionC
orB, the manual headlamp mode has
priority over the daytime running lamp
mode.
The corresponding exterior lamps switch
on (
page 58).
Locator lighting and night security
illumination
The locator lighting and the night security
illumination are described in the “Control
system” section, see “Setting locator light-
ing” (page 183) and “Setting night secu-
rity illumination” (
page 184).Fog lamps
Warning!
G
In low ambient lighting or foggy conditions,
only switch from positionU toB with
the vehicle at a standstill in a safe location.
Switching fromU toB will briefly
switch off the headlamps. Doing so while
driving in low ambient lighting conditions
may result in an accident.iFog lamps will operate with the parking
lamps and/or the low beam headlamps
on. Fog lamps should only be used in
conjunction with low beam headlamps.
Consult your State or Province Motor
Vehicle Regulations regarding permis-
sible lamp operation.
iFog lamps cannot be switched on with
the exterior lamp switch in
positionU. For switching on the fog
lamps, turn the exterior lamp switch to
positionB first.

152 Controls in detailLighting
Push the combination switch in
direction of arrow1 to switch on the
high beam.
The high beam headlamp indicator
lampA in the instrument cluster
comes on (
page 24).

Pull the combination switch in direction
of arrow2 to its original position to
switch off the high beam.
The high beam headlamp indicator
lampA in the instrument cluster
goes out.
High beam flasher

Pull the combination switch briefly in
direction of arrow2.
Corner-illuminating front fog lamps*
The corner-illuminating front fog lamps im-
prove illumination of the road into which
you are turning.
The corner-illuminating front fog lamps will
operate with the engine running and with

the exterior lamp switch in
positionB (
page 147)
or


the exterior lamp switch in
positionU (
page 147)
or


the daytime running lamp mode
activated (
page 149)Driving forward
Switching on corner-illuminating front
fog lamps

Depending on whether you are turning
left or right, switch on the left or right
turn signal (
page 58).
The respective front fog lamp comes on
and illuminates the road onto which
you are turning.
iCorner-illuminating front fog lamps will
only come on in low ambient lighting
conditions.
The corner-illuminating front fog lamps
function is not available at a vehicle
speed above 25 mph (40 km/h).
iThe corner-illuminating front fog lamps
will come on automatically depending
on the steering angle, even if you did
not switch on either turn signal. If the
corner-illuminating front fog lamps
came on automatically, they will also
go out automatically depending on the
steering angle.


159 Controls in detail
Instrument cluster
Trip odometer
Make sure you are viewing the trip odome-
ter display (
page 161).

If it is not displayed, press buttonè
orÿ on the multifunction steering
wheel (
page 162) repeatedly until
the trip odometer appears in the multi-
function display.

Press and hold reset button 2
(page 158) until the trip odometer is
reset.
Tachometer
The red marking on the tachometer
(page 24) denotes excessive engine
speed.
To help protect the engine, the fuel supply
is interrupted if the engine is operated
within the red marking.
Outside temperature indicator
The outside temperature is indicated in the
multifunction display (
page 161).
!Avoid driving at excessive engine
speeds, as it may result in serious
engine damage that is not covered by
the Mercedes-Benz Limited Warranty.
Warning!
G
The outside temperature indicator is not de-
signed to serve as an ice-warning device and
is therefore unsuitable for that purpose.
Indicated temperatures just above the freez-
ing point do not guarantee that the road sur-
face is free of ice. The road may still be icy,
especially in wooded areas or on bridges.