Page 419 of 539

418 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
.
3rd brake lamp
The high mounted brake lamp is
malfunctioning. This message
will only appear if all light emit-
ting diodes have stopped work-
ing.
Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Brake lamp, left
Substitute bulb on
The left brake lamp is malfunc-
tioning. A substitute bulb is be-
ing used.
Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Brake lamp, right
Substitute bulb on
The right brake lamp is malfunc-
tioning. A substitute bulb is be-
ing used.
Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Display malfunction
Visit workshop
The display for the lamps or the
system is malfunctioning.
Visit an authorized Mercedes-Benz Light
Truck Center as soon as possible.
Front foglamp,
left
The left front fog lamp is mal-
functioning.
Replace the bulb as soon as possible.
Front foglamp,
right
The right front fog lamp is mal-
functioning.
Replace the bulb as soon as possible.
Rear foglamp,
left
The left rear fog lamp is malfunc-
tioning.
Replace the bulb as soon as possible.
Rear foglamp,
right
The right rear fog lamp is mal-
functioning.
Replace the bulb as soon as possible.
Page 424 of 539
423 Practical hints
What to do if …
Display symbol
Display messages
Possible cause
Possible solution
H
Please rectify
tire pressure
The pressure is too low in one or
more tires.
Check and correct tire inflation pressure as
required.
Caution
Tire defect
One or more tires are deflating.
The respective tire is shown in the
multifunction display.
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
If necessary, change the wheel.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Page 425 of 539
424 Practical hintsWhat to do if …Display symbol
Display messages
Possible cause
Possible solution
H
Check tires
The tire pressure in one or more tires is
already below the minimum value.
The respective tire is shown in the
multifunction display.
Carefully bring the vehicle to a halt,
avoiding abrupt steering and braking
maneuvers.
Check and adjust tire pressure as
required.
If necessary, change the wheel.
Warning!
G
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle.
You may lose control of the vehicle. Contin-
ued driving with a flat tire will cause exces-
sive heat build-up and possibly a fire.
Page 432 of 539

431 Practical hints
Where will I find ...?
Trunk area shown with spare wheel
removed1Wheel bolt wrench with screwdriver
2Vehicle jack
3Collapsible wheel chock
4Spare fuses, fuse chart, fuse extractor
5Towing eye bolt
6Alignment bolt
7Wheel bolts for 17" light alloy rims or
Minispare wheel1Wheel bolt wrench
2Screwdriver
3Interchangeable slot
Screwdriver2 is placed inside the handle
of wheelbolt wrench1.Vehicle jack
iVehicles with scissors-type jack see
separate instructions.
!To prevent damage, always disengage
the elastic strap and lower the cargo
compartment floor (
page 430) be-
fore closing the tailgate.
Warning!
G
The jack is designed exclusively for jacking
up the vehicle at the jack take-up brackets
built into both sides of the vehicle. To help
avoid personal injury, use the jack only to lift
the vehicle during a wheel change. Never
get beneath the vehicle while it is supported
by the jack. Keep hands and feet away from
the area under the lifted vehicle. Always
firmly set parking brake and block wheels
before raising vehicle with jack.
Do not disengage parking brake while the
vehicle is raised. Be certain that the jack is
always vertical (plumb line) when in use, es-
pecially on hills. Always try to use the jack
on level surface.
Make sure that the jack arm is fully seated
in the jack take-up bracket. Always lower
the vehicle onto sufficient capacity jack-
stands before working under the vehicle.
Page 444 of 539

443 Practical hints
Replacing bulbs
Replacing bulbs
Bulbs
Safe vehicle operation depends on proper
exterior lighting and signaling. It is there-
fore essential that all bulbs and lamp as-
semblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals. See an
authorized Mercedes-Benz Light Truck
Center for headlamp adjustment.Front lamps
iSubstitute bulbs will be brought into
use when the following lamps malfunc-
tion:
Brake lamps
Parking lamps
Turn signal lamps
Tail lamps
Observe the messages in the multi-
function display (
page 418).
iIf the headlamps or front fog lamps are
fogged up on the inside as a result of
high humidity, driving the vehicle a dis-
tance with the lights on should clear up
the fogging.
Lamp
Type
1
Parking and standing
lamp
W5W
2
High beam/high
beam flasher lamp
H7 (55 W)
3
Low beam
1
1Vehicles with Bi-Xenon headlamps*: Do not re-
place the Bi-Xenon bulbs yourself. See your autho-
rized Mercedes-Benz Light Truck Center.
H7 (55 W)
Bi-Xenon*:
D2S-35 W
4
Additional turn signal
lamp
LED
5
Side marker lamp
WY 5 W
6
Turn signal lamp
3457 AK S-8
(30/2.2 cp
bulb)
7
Front fog lamp
H11 (55 W)
Page 445 of 539

444 Practical hintsReplacing bulbsRear lamps Notes on bulb replacement
Only use 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.
Lamp
Type
8
High mounted brake
lamp
LED
9
Brake lamp
P21W
a
Backup lamp
P21W
b
Turn signal lamp
PY 21 W
c
Side marker lamp
P21/4W
d
Tail, parking, standing
lamp, rear fog lamp
(only driver’s side)
P21/4W
e
License plate lamps
C5W
Warning!
G
Bulbs and bulb sockets can be very hot.
Allow the lamp to cool down before chang-
ing 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.
Because of high voltage in Xenon lamps, it is
dangerous to replace the bulb or repair the
lamp and its components. We recommend
that you have such work done by a qualified
technician.
Page 446 of 539
445 Practical hints
Replacing bulbs
Have the LEDs and bulbs for the following
lamps replaced by an authorized
Mercedes-Benz Light Truck Center:
Additional turn signals in the exterior
rear view mirrors
Bi-Xenon lamps*
Front fog lamps (vehicles with sport
package*)
High mounted brake lamp
Replacing bulbs for front lamps
Before you start to replace a bulb for a
front lamp, do the following first:
Turn the exterior lamp switch to
positionM (
page 138).
Open the hood (
page 326).
1Housing cover for low beam halogen or
Bi-Xenon* headlamp
2Housing cover for high beam halogen
bulb (vehicles with halogen bulbs: high
beam and high beam flasher; vehicles
with Bi-Xenon* headlamps: high beam
flasher only)
3Bulb socket for parking and standing
lamp bulb
4Bulb socket for turn signal lamp bulb
5Bulb socket for side marker lamp bulb
Page 452 of 539
451 Practical hints
Replacing bulbs
Example rear lamp passenger-side1Brake lamp
2Backup lamp
3Rear fog lamp (only driver’s side), tail
lamp, parking and standing lamp
4Side marker lamp
5Turn signal lamp
Turn the respective bulb socket with
the bulb counterclockwise and remove
it.
Press gently onto the respective bulb
and turn counterclockwise out of its
bulb socket.
Press the new bulb gently into its bulb
socket and turn clockwise until it en-
gages.
Align bulb socket and turn it clockwise.
License plate lamp
1License plate lamp cover
2Screw
Loosen both screws2.
Remove license plate lamp cover1.
Replace the tubular bulb.
Reinstall license plate lamp cover1.
Retighten screws2.
Adjusting headlamp aim
VVertical centerline
HHeadlamp mounting high, measured
from the center
iHigh beam adjustments simultaneous-
ly aim the low beam.
Vehicle should have a normal tailgate
load.