Page 360 of 457
359 Practical hints
What to do if …
Display symbolDisplay messagePossible cause/consequencePossible solution
.Turn signal
in left side
mirrorThe turn signal in the left exterior rear
view mirror is malfunctioning. This
message will only appear if a critical num-
ber of LEDs have stopped working.Contact an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
Turn signal
in right side
mirrorThe turn signal in the right exterior rear
view mirror is malfunctioning. This
message will only appear if a critical num-
ber of LEDs have stopped working.Contact an authorized Mercedes-Benz
Light Truck Center as soon as
possible.
Turn off
lights or
remove keyYou have opened the driver’s door while
the exterior lamp switch is in
positionU and the SmartKey is still in
the starter switch.
The parking lamps are still on.Switch off the headlamps using the
exterior lamp switch (
page 117).
or
Remove the SmartKey from the starter
switch.
Page 376 of 457

375 Practical hints
Brush guard
Brush guard
The brush guard is available on G 55 AMG
(U.S vehicles only).
Lowering and raising brush guard
1Locking and unlocking handle
2Quick lock
3Lock
4End stop jointLowering
While holding brush guard firmly, open
quick lock2 using locking and unlock-
ing handle1.
Gently lower brush guard until it
reaches its fully lowered position.
Raising and securing
Flip up brush guard until it contacts end
stop joint4.
Quick lock stop pin2 must engage
the cross slot recess in lock3.
Now turn quick lock2 so that quick
lock makes contact with end stop
joint4.
Lock quick lock2 on both sides of
brush guard using locking and unlock-
ing handle1.
Warning!G
The brush guard is designed solely to
enhance 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 headlamps
or to replace bulbs.
!Make sure both quick stop pins2 are
seated fully in lock3.
Page 378 of 457
377 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
assemblies are in good working order at all
times.
Correct headlamp adjustment is extremely
important. Have headlamps checked and
readjusted at regular intervals and when a
bulb has been replaced. See an authorized
Mercedes-Benz Light Truck Center for
headlamp adjustment.iIf the headlamps or front fog lamps are
fogged up on the inside as a result of high
humidity, driving the vehicle a distance with the
lights on should clear up the fogging.iSubstitute bulbs will be brought into use
when the following lamps malfunction:
Turn signal lamps
Tail lamps
Parking lamps
Rear fog lamp
Read and observe the messages in the
multifunction display (
page 354).
Page 380 of 457

379 Practical hints
Replacing bulbs
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, contact an authorized
Mercedes-Benz Light Truck Center.Have the LEDs and bulbs for the following
lamps replaced at an authorized
Mercedes-Benz Light Truck Center:
the additional turn signal lamps in the
exterior rear view mirrors
the high mounted brake lamp
the Bi-Xenon lamps
the locator lighting lamps in the
exterior rear view mirrors
Warning!G
Bulbs and bulb sockets can be very hot.
Allow 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.
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.
!Do not replace the LEDs yourself. You could
otherwise damage the LEDs or parts of the vehi-
cle. Only have the LEDs replaced at an autho-
rized Mercedes-Benz Light Truck Center.