81 Safety and Security
Occupant safety
You cannot remove the active head
restraint on the driver’s and front
passenger’s seats.
For removal of the active head restraints
we recommend that you contact an
authorized Mercedes-Benz Light Truck
Center.
For information on head restraint adjust-
ment, see “Seats” (
page 43).
For information on resetting the activated
active head restraints, see “Resetting acti-
vated head restraints” (page 479).
Rear head restraints
Do not attach any objects (e.g. hangers) to
the head restraints posts. Otherwise, the
active head restraints may not be able to
function properly or offer the intended
degree of protection in the event of an
accident.Warning!
G
For your protection, drive only with properly
positioned head restraints.
Adjust head restraint so that it is as close to
the head as possible and the center of the
head restraint supports the back of the head
at eye level. This will reduce the potential for
injury to the head and neck in the event of
an accident or similar situation.
Warning!
G
Do not drive the vehicle without the seat
head restraints installed when the rear seats
are occupied. Head restraints are intended
to help reduce injuries during an accident.
With a rear seat occupied, make sure to
move the respective head restraint up from
the lowest non-use position and have the
occupant adjust the head restraint properly.
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint in such a way that
it is as close to the head as possible and the
head restraint supports the back of the head
at eye level. This will reduce the potential for
injury to the head and neck in the event of
an accident or similar situation.
87 Safety and Security
Occupant safety
When the OCS senses that the front passen-
ger seat occupant is classified as being
heavier than the weight of a typical
12-month-old child seated in a standard
child restraint or as being a small individual
(such as a young teenager or a small adult),
the 59indicator lamp will illu-
minate for approximately 6 seconds when
the engine is started and then, depending on
occupant weight sensor readings from the
seat, remain illuminated or go out. With the
59indicator lamp illuminated,
the front passenger front air bag is deacti-
vated. With the 59indicator
lamp out, the front passenger front air bag is
activated.
When the OCS senses that the front passen-
ger seat occupant is classified as an adult or
someone larger than a small individual, the
59indicator lamp will illumi-
nate for approximately 6 seconds when the
engine is started and then go out, indicating
that the front passenger front air bag is
activated.
If the 59indicator lamp is illu-
minated, the front passenger front air bag is
deactivated and will not be deployed.
If the 59indicator lamp is not
illuminated, the front passenger front air
bag is activated and will be deployed:
in the event of certain frontal impacts
if impact exceeds a preset deployment
threshold
independently of the side impact air
bags.
If the front passenger front air bag is de-
ployed, the rate of inflation will be influ-
enced by:
the rate of vehicle deceleration as
assessed by the air bag control unit
the front passenger’s weight category
as identified by the Occupant Classifica-
tion System (OCS)
Warning!
G
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing position. Thus, we strongly recommend
that children be placed in the rear seats
whenever possible. Regardless of seating
position, children 12 years old and under
must be seated and properly secured in an
appropriate infant or child restraint
recommended for the size and weight of the
child.
The infant or child restraint must be properly
secured with the vehicle’s seat belt, the seat
belt and top tether strap, or lower anchors
and top tether strap, fully in accordance
with the child seat manufacturer’s
instructions.
126 Controls in detailLocking and unlockingIf 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.Automatic central locking
The doors and the tailgate lock automati-
cally when the ignition is switched on and
the wheels are turning at vehicle speeds of
approximately 9 mph (15 km/h) or more.
You can open a locked door from the in-
side. Open door only when conditions are
safe to do so.For information on towing the vehicle, see
“Towing the vehicle” (
page 518).
You can deactivate the automatic locking
mode using the control system
(
page 176).
Locking and unlocking from the inside
You can lock or unlock the doors and the
tailgate from inside using the central lock-
ing or unlocking switch. This can be useful,
for example, if you want to lock the vehicle
before starting to drive.
The fuel filler flap cannot be locked or un-
locked with the central locking or unlock-
ing switch.
i
To prevent a possible inadvertent lockout,
the tailgate will open automatically if a SmartKey
with KEYLESS-GO* is recognized inside the
vehicle.
i
The doors unlock automatically after an
accident if the force of the impact exceeds a
preset threshold.
The vehicle automatically locks when the ignition
is switched on and the wheels are turning at
vehicle speeds of approximately 9 mph
(15 km/h) or more. You could therefore lock
yourself out when the vehicle
is pushed or towed
is on a test stand
Warning!
G
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children unat-
tended in the vehicle, or with access to an
unlocked vehicle. Unsupervised use of vehi-
cle equipment may cause an accident
and/or serious personal injury.
141 Controls in detail
Lighting
Driving forward
Switching on corner-illuminating front
fog lamps
Switch on the left or right turn signal
(page 60), depending on whether
you are turning left or right.
The respective front fog lamp comes on
and illuminates the area in the direc-
tion into which you are turning.
or
Turn steering wheel in desired direc-
tion.
The front fog lamp on the side of your
steering direction comes on.Switching off corner-illuminating front
fog lamps
The combination switch for the turn signal
resets automatically after major steering
wheel movements. This will switch off the
corner-illuminating front fog lamps if they
were activated by switching on the left or
right turn signal.
If the turn signal should stay on after
making the turn, the turn signal and the
corner-illuminating front fog lamps can be
switched off by returning the combination
switch to its original position.Driving rearward
Switching on corner-illuminating front
fog lamps
Shift the automatic transmission to
reverse gearR (
page 187).
The corner-illuminating front fog lamp
opposite to your steering direction
comes on.
Switching off corner-illuminating front
fog lamps
Shift the automatic transmission to a
gear other than reverse gearR
(page 187).
The respective corner-illuminating
front fog lamp goes out.
i
The corner-illuminating front fog lamps
temporarily come on on both sides of the vehicle
if you turn the steering wheel in one direction
and then again in the other direction shortly
thereafter.
i
The corner-illuminating front fog lamps will
come on automatically depending on the steer-
ing angle and vehicle speed, 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 and vehicle
speed.
i
There may be a brief delay before the
corner-illuminating front fog lamps switch off.
145 Controls in detail
Instrument cluster
Instrument cluster
For a full view illustration of the instrument
cluster, see “Instrument cluster”
(page 26).
1To dim instrument cluster illumination
2Reset button
3To brighten instrument cluster
illumination
The instrument cluster is activated when
you
open a door
switch on the ignition (
page 40)
press reset button2
switch on the exterior lamps
(page 136)You can change the instrument cluster
settings in the instrument cluster submenu
of the control system (
page 167).Adjusting instrument cluster illumina-
tion
Use button1 or3 to adjust the illumina-
tion brightness for the instrument cluster.
To brighten illumination
Press and hold button3 until the
desired level of illumination is reached.
To dim illumination
Press and hold button1 until the
desired level of illumination is reached.
Warning!
G
No messages will be displayed if either the
instrument cluster or the multifunction
display is inoperative.
As a result, you will not be able to see infor-
mation about your driving conditions, such
as speed or outside temperature, warn-
ing/indicator lamps, malfunction/warning
messages or the failure of any systems.
Driving characteristics may be impaired.
If you must continue to drive, do so with
added caution. Contact an authorized
Mercedes-Benz Light Truck Center as soon
as possible.
i
The instrument cluster illumination is
dimmed or brightened automatically to suit am-
bient light conditions.
The instrument cluster illumination will also be
adjusted automatically when you switch on the
vehicle’s exterior lamps.
146 Controls in detailInstrument clusterResetting trip odometer
Make sure you are viewing the trip odome-
ter display (
page 147).
If it is not displayed, press buttonè
orÿ on the multifunction steering
wheel (
page 148) repeatedly until
the trip odometer appears in the multi-
function display.
Press and hold reset button2 in the
instrument cluster (
page 145) until
the trip odometer is reset.
Tachometer
The red marking on the tachometer
(page 26) 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 displayed in
the multifunction display (
page 147).The temperature sensor is located in the
front bumper area. Due to its location, the
sensor can be affected by road or engine
heat during idling or slow driving. This
means that the accuracy of the displayed
temperature can only be verified by com-
parison to a thermometer placed next to
the sensor, not by comparison to external
displays (e.g. bank signs etc.).
When moving the vehicle into colder ambi-
ent temperatures (e.g. when leaving your
garage), you will notice a delay before the
lower temperature is displayed.
A delay also occurs when ambient temper-
atures rise. This prevents inaccurate tem-
perature indications caused by heat
radiated from the engine during idling or
slow driving.
!
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.
153 Controls in detail
Control system
Menus, submenus and functions
Menu7
Menu8
Menu9
Menua
Menub
Menuc
DISTRONIC*
Vehicle status
message memory
1
1The vehicle status message memory menu is only displayed if there is a message stored.
Settings
Vehicle configuration
Trip computer
Telephone*
(page 162)
(page 163)
(page 164)
(page 178)
(page 180)
(page 182)
Commands/submenusCalling up settings
Calling up vehicle mal-
function, warning and
system status messages
stored in memory
Resetting to factory
settings
Distance warning
function* on/off
Fuel consumption
statistics from start
Loading
phone book
Instrument cluster
submenu
DSR (Downhill Speed
Regulation) pro-
grammed default speed
Fuel consumption
statistics since the
last reset
Searching for
name in
phone book
Time/Date sub-
menu
Distance to empty
Lighting submenuVehicle submenuComfort submenu*
i
The headings used in the menus table are
designed to facilitate navigation within thesystem and are not necessarily identical to those
shown in the control system displays. The firstfunction displayed in each menu will show you
which part of the system you are in.
158 Controls in detailControl systemSaving lap time and starting a new lap
Press buttonç while the timer is
running.
The intermediate time will be shown for
five seconds.
Press buttonç within 5 seconds.
The intermediate time shown will be
saved as a lap time.
The RACETIMER begins timing the new
lap. The new lap begins to be timed as
soon as the intermediate time is called
up.
1Gear indicator
2RACETIMER
3Best lap time
4Lap numberResetting current lap
Press buttonæ while the timer is
running.
The timer stops.
Press buttonç.
The lap time is reset to “0”.
Deleting all laps
Press buttonæ while the timer is
running.
The timer stops.
Press the reset button twice
(page 26).
Press buttonæ.
The timer starts. The saved laps are
deleted.Overall analysis
Press buttonè orÿ repeatedly
until you see the AMG menu.
Press buttonj repeatedly until you
see the overall analysis.
1Overall analysis of RACETIMER
2Overall driving time
3Maximum speed
4Overall distance driven
5Average speed
i
You can save up to nine laps.
i
It is not possible to delete a single saved lap.
i
When you switch off the engine, the
RACETIMER will be reset to“0” after 30 seconds.
All laps are deleted.
i
These functions are only available if you
have saved at least one lap and have stopped the
RACETIMER.