Page 239 of 416
239 Operation
Engine compartment
Closing
Lower hood and let it drop into lock
from a height of approximately 0.7 ft
(20 cm).
The hood will lock audibly.
Check to make sure the hood is fully
closed.
If you can raise the hood at a point
above the turn signals to the left and
right of the hood, then it is not properly
closed. Open it again and let it drop
with somewhat greater force.
Engine oil
The amount of oil your engine needs will
depend on a number of factors, including
driving style. Higher oil consumption can
occur when
the vehicle is new
the vehicle is driven frequently at
higher engine speeds
Engine oil consumption checks should only
be made after the vehicle break-in period.
Warning!
G
The engine is equipped with a transistorized
ignition system. Because of the high voltage,
it is dangerous to touch any components (ig-
nition coils, spark plug sockets, diagnostic
socket) of the ignition system
with the engine running
while starting the engine
if ignition is “on” and the engine is
turned manually
Warning!
G
Be careful that you do not close the hood on
anyone.!Do not push the hood closed manually,
as this could damage it.
iDo not use any special lubricant addi-
tives, as these may damage the drive
assemblies. Using special additives not
approved by Mercedes-Benz may
cause damage not covered by the
Mercedes-Benz Limited Warranty.
More information on this subject is
available at any Mercedes-Benz Light
Truck Center.
Page 282 of 416
282 OperationVehicle careEngine cleaning
Prior to cleaning the engine compartment,
make sure to protect electrical compo-
nents and connectors from the intrusion of
water and cleaning agents.
Corrosion protection, such as
MB Anticorrosion Wax should be applied to
the engine compartment after every en-
gine cleaning. Before applying, all control
linkage bushings and joints should be lu-
bricated. The poly-V-belt and all pulleys
should be protected from any wax.Vehicle washing
Do not use hot water or wash your vehicle
in direct sunlight. Use only a mild car wash
detergent, such as Mercedes-Benz ap-
proved Car Shampoo.
Thoroughly spray the vehicle with a dif-
fused jet of water. Direct only a very weak
spray towards the ventilation intake. Use
plenty of water and rinse the sponge and
chamois frequently.
Rinse with clear water and thoroughly dry
with a chamois. Do not allow cleaning
agents to dry on the finish.
Due to the width of the vehicle, fold in ex-
terior rear view mirrors prior to running the
vehicle through an automatic car wash to
prevent damage to the mirrors.
In the winter, thoroughly remove all traces
of road salt as soon as possible.
When washing the underbody, do not for-
get to clean the inner sides of the wheels.Ornamental moldings
For regular cleaning and care of very dirty
chrome-plated parts, use a chrome
cleaner.
Headlamps, tail lamps, side marker,
turn signal lenses
Use a mild car wash detergent, such as
Mercedes-Benz approved Car
Shampoo, with plenty of water.
To prevent scratches, never apply strong
force and use only a soft, non-scratchy
cloth when cleaning the lenses. Do not at-
tempt to wipe dirty lenses with a dry cloth
or sponge.
Page 297 of 416
297 Practical hints
What to do if …
On the pages that follow, you will find a
compilation of the most important warning
and malfunction messages that may ap-
pear in the multifunction display.
For your convenience the messages are
divided into two sections:
Text messages (
page 298)
Symbol messages (
page 302)
Warning!
G
No messages will be displayed if either the
instrument cluster or the multifunction dis-
play is inoperative. Systems that have a sig-
nificant influence on handling performance
may not be functioning.
Contact your nearest authorized
Mercedes-Benz Light Truck Center.
iSwitching on ignition (
page 35),
causes all instrument cluster lamps
(except high beam headlamp indicator
lamp and turn signal indicator lamps
unless activated) as well as the multi-
function display to come on. Make sure
the lamps and multifunction display are
all in working order before starting your
journey.
Page 312 of 416
312 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
.
3RD BRAKE LIGHT
CHECK LIGHT!
The high mounted brake lamp is malfunc-
tioning. This message will only appear if
all light emitting diodes have stopped
working.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
ADD. TURN SIG., L
CHECK LIGHT!
The left turn signal in the exterior rear
view mirror is malfunctioning. This mes-
sage will only appear if all light emitting
diodes have stopped working.
Have the LEDs replaced as soon as
possible.
ADD. TURN SIG., R
CHECK LIGHT!
The right turn signal in the exterior rear
view mirror is malfunctioning. This mes-
sage will only appear if all light emitting
diodes have stopped working.
Have the LEDs replaced as soon as
possible.
AUTOM. LIGHT ON
REMOVE KEY!
You have left the SmartKey in the starter
switch.
Remove the SmartKey from the starter
switch.
BRAKE LIGHT
DRIVE TO WORKSHOP!
Brake lamp illumination is delayed or
lamp is permanently on.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
BRAKE LIGHT, L
CHECK LIGHT!
The left brake lamp is malfunctioning.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
Page 315 of 416
315 Practical hints
What to do if …
Display symbol
Display message
Possible cause
Possible solution
.
MARKER LIGHT, FL
CHECK LIGHT!
The left front side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
MARKER LIGHT, FR
CHECK LIGHT!
The right front side marker lamp is mal-
functioning.
Replace the bulb as soon as possible.
REAR FOGLIGHT
CHECK LIGHT!
The rear fog lamp is malfunctioning.
Replace the bulb as soon as possible.
REAR FOGLIGHT
TURN OFF
BACK-UP LIGHT ON!
A lamp is malfunctioning. A backup bulb
is being used.
Turn the rear fog lamp off.
REVERSE LIGHT, R
CHECK LIGHT!
The right backup lamp is malfunctioning.
Replace the bulb as soon as possible.
TAIL LIGHT, L
CHECK LIGHT!
BACK-UP LIGHT ON!
The left tail lamp is malfunctioning.
A backup bulb is being used.
Replace the bulb as soon as possible.
TAIL LIGHT, R
CHECK LIGHT!
BACK-UP LIGHT ON!
The right tail lamp is malfunctioning.
A backup bulb is being used.
Replace the bulb as soon as possible.
TURN SIG., LF
CHECK LIGHT!
BACK-UP LIGHT ON!
The left front turn signal lamp is malfunc-
tioning. A backup bulb is being used.
Replace the bulb as soon as possible.
Page 316 of 416
316 Practical hintsWhat to do if …Display symbol
Display message
Possible cause
Possible solution
.
TURN SIG., RF
CHECK LIGHT
!
BACK-UP LIGHT ON!
The right front turn signal lamp is mal-
functioning. A backup bulb is being
used.
Replace the bulb as soon as
possible.
TURN SIG., LR
CHECK LIGHT
!
BACK-UP LIGHT ON!
The left rear turn signal lamp is malfunc-
tioning. A backup bulb is being used.
Replace the bulb as soon as
possible.
TURN SIG., RR
CHECK LIGHT!
BACK-UP LIGHT ON!
The right rear turn signal lamp is mal-
functioning. A backup bulb is being
used.
Replace the bulb as soon as
possible.
VISIT WORKSHOP!
DISPLAY MALFUNCTION
The display for the lamps or the system
is malfunctioning.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
TURN SIG. MIRROR, L
CHECK LIGHT!
The left turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
TURN SIG. MIRROR, L
CHECK LIGHT!
The right turn signal in the side mirror is
malfunctioning. This message will only
appear if all light emitting diodes have
stopped working.
Visit an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
Page 334 of 416
334 Practical hintsReplacing bulbsBulbs Front lamps Rear lamps
Lamp
Type
1
Additional turn
signal lamp
LED
2
Turn signal lamp
1156 NA
3
Side marker lamp
T 4 W
4
High and low beam
H4 60 (55 W)
Parking and
standing lamp
T 4 W
5
Fog lamp
H3 (55 W)
Lamp
Type
6
High mounted brake
lamp
LED
7
Turn signal lamp
PY 21 W
Brake lamp
P 21 W
Tail, parking and
standing lamp
R 5 W
8
Backup lamp
P 21 W
9
License plate lamps
C 5 W
a
Rear fog lamp
P 21 W
b
Side marker lamp
T 4 W
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.
