MERCEDES-BENZ G500 2008 W463 Owner's Manual

370 Practical hints
Unlocking/locking in an emergency
Close the driver’s door.
Slide the mechanical key out of the
SmartKey (
page 368).
Insert the mechanical key into the
driver’s door lock cylinder until it stops.
Turn the mechanical key clockwise.
The vehicle is locked.
Check if the tailgate is locked. If
necessary lock the tailgate with the
mechanical key.
Fuel filler flap
The emergency release is located on the
passenger side of the cargo compartment
behind the rear trim panel.1 Edge protection
2 Rear trim panel
Open the tailgate.
Remove edge protection 1 from the
door pillar.
Remove rear trim panel 2. 3
Release strap
Pull release strap 3 upwards.
The fuel filler flap is unlocked.
Open the fuel filler flap (page 264).
iThis procedure does not arm the anti-theft
alarm system, nor does it lock the fuel filler flap.

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371
Practical hints
Unlocking/locking in an emergency
Manually unlocking the gear selector
lever
In case of power failure the gear selector
lever can be manually unlocked, e.g. to tow
the vehicle.
1 Tool
Insert a suitable tool 1 (e.g. a ball
point pen) into the covered opening.
Perform the following two steps
simultaneously:
Push tool 1 down in direction of
the arrow.
Move the gear selector lever from
park position P.
Remove tool 1 from the opening.
The cover returns to its closed position
after moving the gear selector lever to
positions D+ and D-.
iThe gear selector lever is locked again when
moving it to park position P.
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372 Practical hints
Opening/closing in an emergency
Tilt/sliding sunroof
You can open or close the tilt/sliding
sunroof manually should an electrical
malfunction occur.
The tilt/sliding sunroof drive is located on
the driver’s side of the cargo compartment
behind the rear trim panel.1 Edge protection
2 Rear trim panelOpen the tailgate.
Remove edge protection 1 from the
door pillar.
Remove rear trim panel 2.
3 Key
4 Screwdriver
Take the vehicle tool kit out of its
storage compartment (
page 364).
Take key 3 and screwdriver 4 out of
the vehicle tool kit.
Fit key 3 into hexagon nut of drive.
Insert screwdriver 4 (as a lever) into
hole of key 3.
Turn screwdriver 4 clockwise to

slide sunroof closed

raise sunroof at the rear
Turn screwdriver 4 counterclockwise
to

slide sunroof open

lower sunroof at the reariDo not disconnect electrical connectors.
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373
Practical hints
Brush guard
 Brush guard
The brush guard is available on G 55 AMG
(U.S vehicles only).
Lowering and raising brush guard
1 Locking and unlocking handle
2 Quick lock
3 Lock
4 End stop joint Lowering
While holding brush guard firmly, open
quick lock
2 using locking and unlock-
ing handle 1.
Gently lower brush guard until it
reaches its fully lowered position.
Raising and securing
Flip up brush guard until it contacts end
stop joint 4.
Quick lock stop pin 2 must engage
the cross slot recess in lock 3.
Now turn quick lock 2 so that quick
lock makes contact with end stop
joint 4.
Lock quick lock 2 on both sides of
brush guard using locking and unlock-
ing handle 1.
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 inju ry 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 pins 2 are
seated fully in lock 3.
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374 Practical hints
Replacing SmartKey batteries
If the batteries in the SmartKey are
discharged, 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. Replacement batteries: Lithium, type
CR 2025 or equivalent.
Remove the mechanical key from the
SmartKey (
page 368).
1 Mechanical key
2 Slide
3 Battery compartment
Insert mechanical key 1 in direction
of the arrow in side opening.
Using mechanical key 1, push gray
slide 2 to unlatch battery
compartment 3.
Pull battery compartment 3 out of the
housing in direction of the arrow. 4
Battery
5 Contact spring
Remove discharged batteries 4 in
direction of the arrow.
Using a lint-free cloth, insert new
batteries under contact spring 5 with
the positive terminal (+) facing up.
Return battery compartment 3 into
the housing until it locks into place.
Slide mechanical key 1 back into the
SmartKey.
Check the operation of the SmartKey.
Warning!G
Keep the batteries out of reach of children.
If a battery is swallowe d, seek medical help
immediately.
iWhen inserting the batteries, make sure
they are clean and free of lint.
iWhen replacing batteries, always replace
both batteries.
The required replacement batteries are available
at any Mercedes-Benz Light Truck Center.
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375
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 adju stment 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 352).
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376 Practical hints
Replacing bulbs
Front lampsRear lamps
LampType
1Additional turn signal
lampLED
2Locator lighting lampW6W
3Turn signal lamp1156 NA
4Side marker lampT4W
5Bi-Xenon headlamp:
Low and high beam1
1Bi-Xenon headlamp: Low beam and high beam use
the same D1S-35 W lamp. Do not replace the
Bi-Xenon bulbs yourself. Contact an authorized
Mercedes-Benz Light Truck Center.
D1S-35 W
Parking and standing
lampW5W
Blue vision
6Front fog lampH11 (55 W)
LampType
7High mounted brake
lampLED
8Turn signal lampPY 21 W
Brake and tail lampP21/5W
Tail, parking and
standing lampW5W
9Backup lampP21W
aLicense plate lampsC5W
bRear fog lampP21W
cSide marker lampT4W
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377
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.
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378 Practical hints
Replacing bulbs
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
position M (
page 117). Bi-Xenon headlamp
Parking and standing lamp bulbLeft headlamp shown, right headlamp
laterally reversed
1Securing screw (trim panel)
2 Headlamp trim panel
Loosen and remove securing
screws 1.
Remove headlamp trim panel 2 in
direction of arrow and the seal.
iG 55 AMG (U.S. vehicles only):
Fold the brush guard down before replacing
bulbs (
page 373).
G55AMG:
Remove the protective grille before replacing the
bulbs.
Warning!G
Do not remove the low beam/high beam
cover for the Bi-Xenon headlamp. Because
of high voltage in Xeno n lamps, it is danger-
ous to replace the bulb or repair the lamp
and its components. We recommend that
you have such work done by a qualified
technician.
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379
Practical hints
Replacing bulbs
Left headlamp shown, right headlamp
laterally reversed
3
Securing screw (headlamp)
4 Adjusting screw (headlamp)
5 Headlamp
Loosen and remove headlamp-securing
screws 3.
Remove headlamp 5. 5
Headlamp
6 Bulb socket
Hold headlamp 5, push gently onto
bulb socket 6, and turn bulb
socket 6 counterclockwise to its
stop.
Pull bulb socket 6 out of
headlamp 5. 7
Bulb
Pull bulb 7 out of its bulb socket.
Insert the new bulb into the bulb
socket.
Hold headlamp 5, insert bulb
socket 6 into headlamp 5, and turn
bulb socket 6 clockwise to its stop.
Insert headlamp 5 and install and
tighten headlamp-securing screws 3.
Install headlamp trim panel 2 and the
seal.
Install and tighten securing screws 1.
iDo not turn adjusting screw 4. If adjusting
screw 4 is turned, the headlamp adjustment
must be checked at a Mercedes-Benz Light
Truck Center.
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