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 330 of 416
330 Practical hintsBrush guard*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.!Make sure both quick stop pins2 are
seated fully in lock3.
Page 331 of 416
331 Practical hints
Replacing SmartKey batteries
Replacing SmartKey batteries
If the batteries in the SmartKey are dis-
charged, the vehicle can no longer be
locked or unlocked. It is recommended to
have the batteries replaced at an autho-
rized Mercedes-Benz Light Truck Center.Batteries contain materials that can harm
the environment if disposed of improperly.
Recycling of batteries is the preferred
method of disposal. Many states require
sellers of batteries to accept old batteries
for recycling.Warning!
G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting the batteries, make
sure they are clean and free of lint.iWhen replacing batteries, always re-
place both batteries.
The required replacement batteries are
available at any Mercedes-Benz Light
Truck Center.
Page 332 of 416
332 Practical hintsReplacing SmartKey batteriesSmartKey
Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove mechanical key (
page 325).
1Mechanical key
2Battery compartment
Insert mechanical key1 in side open-
ing and push gray slide.
Battery compartment2 is unlatched.
Pull battery compartment out of the
housing in direction of arrow.
Remove the discharged batteries.
3Battery
4Contact spring
Using a lint-free cloth, insert new
batteries3 under contact spring4
with the plus (+) side facing up.
Return battery compartment2 into
the housing until it engages.
Slide mechanical key1 back into the
SmartKey.
Check the operation of the SmartKey.
Page 333 of 416
333 Practical hints
Replacing bulbs
Replacing 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 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 dis-
tance with the lights on should clear up
the fogging.
iBackup bulbs will be brought into use
when lamps malfunction. Observe the
messages in the multifunction display
(page 296).
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.
Page 336 of 416
336 Practical hintsReplacing bulbsReplacing 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 110).Headlamp unit
Left headlamp, right headlamp laterally
reversed1Securing screw (trim panel)
2Headlamp trim panel
3Headlamp4Securing screw (headlamp)
iFor vehicles with brush guard*:
Fold the brush guard* down before
replacing bulbs (
page 329).
G55AMG:
Remove the protective grille before
replacing the bulbs.