Page 16 of 416

16 IntroductionSymbolsThe following symbols are found in this
Operator’s Manual:
* Optional equipment is identified
with an asterisk. Since standard
equipment varies between models,
the descriptions and illustrations in
this manual may differ slightly from
the actual equipment of your
vehicle.
This symbol points to instructions for
you to follow.
A number of these symbols appearing
in succession indicates a multiple-step
procedure.
Page This symbol tells you where to
look for further information on a
topic.
This continuation symbol marks
an interrupted procedure which
will be continued on the next
page.
-> In the glossary of technical
terms, this symbol is used to in-
dicate cross-references to term
definitions.
Display
Words appearing in the multi-
function display are printed in
the type shown here.
Warning!
G
Warning notices draw your attention to haz-
ards that may endanger your health or life,
or the health or life of others.!Highlights hazards that may result in
damage to your vehicle.iHelpful hints or further information you
may find useful.
Page 111 of 416

111 Controls in detail
Lighting
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
Turn the exterior lamp switch to
positionU.
With the SmartKey in starter switch
position1 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.
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
TURN OFF LIGHTS!
ap-
pears in the multifunction display.
Warning!
G
If the exterior lamp switch is set toU,
the headlamps may switch off unexpect-
edly when the system senses bright am-
bient 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 to
B
when driving or
when traffic and / or ambient lighting
conditions require you to do so.
In low ambient lighting conditions, only
switch from position U
to
B
with
the vehicle at a standstill. Switching
from
U
to
B
will briefly switch
off the headlamps. Doing so while driv-
ing 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.
Page 181 of 416

181 Controls in detail
Driving systems
Warning indicator
Visual signals indicate to the driver the rel-
ative distance between the sensors and an
obstacle. The warning indicator is located
next to the tailgate.Warning indicatorAs your vehicle approaches an object, one
or more segments will come on, depending
on the distance. When the sixth segment
lights, you have reached the minimum dis-
tance.An intermittent acoustic warning will
sound when the first yellow segment
comes on. This signal quickens with each
additional segment lit. When all segments
illuminate, the acoustic warning becomes
a constant signal. The signal is canceled
when the gear selector lever is placed in
position D or P.
Rear Parking Assist malfunction
There is a malfunction in the Rear Parking
Assist system if:
a low warning tone sounds while the
vehicle is reversing
The Rear Parking Assist sensors are
dirty or malfunctioning.
Clean the Rear Parking Assist sys-
tem sensors (
page 283).
Switch on the ignition again.
no segments come on and no warning
sounds
The Rear Parking Assist is malfunction-
ing.
Have the Rear Parking Assist sys-
tem checked by an authorized
Mercedes-Benz Light Truck Center
as soon as possible.
Malfunction may also be caused by inter-
ference from other radio or ultrasonic sig-
nals.
Check the Rear Parking Assist opera-
tion at another location to rule out in-
terference from outside radio or
ultrasonic signals.
Page 329 of 416
329 Practical hints
Brush guard*
Brush guard*
Warning!
G
The brush guard is designed solely to en-
hance the appearance of the vehicle and
help protect grille and headlights from minor
mishaps, either on- or off-road. Since the
safety characteristics are limited in the
event of an accident, brush guards are not
intended to prevent injury or damage in the
event of an accident. Also check state and
local regulations on installation and use.
Raise and lower brush guard in an open
space with plenty of room.
To help prevent personal injury when open-
ing or closing the brush guard, use extreme
caution not to trap hands or feet.
The brush guard must be in raised and
locked position while driving.
iOnly lower brush guard to clean head
lamps or to replace bulbs.
Page 335 of 416

335 Practical hints
Replacing bulbs
Notes on bulb replacement
Use only 12 volt bulbs of the same type
and with the specified watt rating.
Switch lights off before changing a bulb
to prevent short circuits.
Always use a clean lint-free cloth when
handling bulbs.
Your hands should be dry and free of oil
and grease.
If the newly installed bulb does not
come on, visit an authorized
Mercedes-Benz Light Truck Center.
Have the LEDs for the following lamps re-
placed by an authorized Mercedes-Benz
Light Truck Center.
Additional turn signals in the exterior
rear view mirrors
High mounted brake lamp
Lamps in the exterior rear view mirrors
Warning!
G
Bulbs and bulb sockets can be very hot. Al-
low the lamp to cool down before changing
a bulb.
Keep bulbs out of reach of children.
Halogen lamps contain pressurized gas.
A bulb can explode if you:
touch or move it when hot
drop the bulb
scratch the bulb
Wear eye and hand protection.
iHave the headlamp adjustment
checked regularly by a Mercedes-Benz
Light Truck Center.
Do not turn the headlamp adjusting
screws. If the adjusting screws are
turned, the headlamp adjustment must
be checked by a Mercedes-Benz Light
Truck Center.
Page 355 of 416

355 Practical hints
Jump starting
The jump-start contacts are located in the
engine compartment.
Make sure the two vehicles do not
touch.
Turn off all electrical consumers.
Apply parking brake.
Shift gear selector lever to positionP.1Cover
2Positive (+) terminal
3Negative (-) terminal
Open cover1 of the positive terminal
of both vehicles.
Connect the positive terminals2 of
the batteries with the jumper cable.
Clamp cable to charged battery first.
Start engine of the vehicle with the
charged battery and run at idle speed.
Connect negative terminals3 of the
batteries with the jumper cable. Clamp
cable to charged battery first.
Start the engine of the disabled
vehicle.
Now you can again turn on the electrical
consumers. Do not turn on the lights under
any circumstances.
Remove the jumper cables first from
negative terminals3 of the batteries
and then from positive terminals2.
You can now turn on the lights.
Have the battery checked at the
nearest authorized Mercedes-Benz
Light Truck Center.
Warning!
G
Keep flames or sparks away from battery.
Do not smoke.
Observe all safety instructions and precau-
tions when handling automotive batteries
(page 351).