MERCEDES-BENZ R500 2006 W251 Owner's Manual

470 Practical hintsReplacing bulbsLow beam and high beam flasher spot
bulbsFront turn signal lamp bulbs

Pull bulb socket 1 out of the head-
lamp housing.

Pull the turn signal bulb out of bulb
socket 1.

Insert the new turn signal bulb into bulb
socket 1.

Insert bulb socket 1 into the head-
lamp housing.Parking and standing lamp bulbs
1Bulb socket for parking and standing
lamp

Turn bulb socket 1 counterclockwise.

Pull bulb socket 1 out of the housing.

Pull the bulb out of bulb socket 1.

Insert the new parking and standing
lamp bulb into bulb socket 1.

Insert bulb socket 1 into the housing.

Turn bulb socket 1 clockwise until it
engages.
Warning!
G
Do not remove the low beam/high beam
cover for the Bi-Xenon* headlamp. Because
of high voltage in Bi-Xenon* lamps, it is dan-
gerous to replace the bulb or repair the lamp
and its components. We recommend that
you have such work done by a qualified
technician.

471 Practical hints
Replacing bulbs
Corner-illuminating front fog lamp*
bulbs
1Corner-illuminating front fog lamp*
2Cover
3Retaining screw
Remove retaining screw3.

Insert a suitable object (e.g. screwdriv-
er) at point indicated by the arrow and
pry out cover 2.
Cover 2 is released.

Swing cover 2 outwards and take it
off.4Retaining screws

Remove screws4 that retain front fog
lamp 1.

Remove corner-illuminating front fog
lamp 1.5Corner-illuminating front fog lamp bulb
socket

Turn bulb socket 5 counterclockwise.

Pull bulb socket 5 out of the housing.

Pull the bulb out of bulb socket 5.

Insert the new corner-illuminating front
fog lamp bulb into bulb socket 5.

Insert bulb socket 5 into the housing.


472 Practical hintsReplacing bulbs
Turn bulb socket 5 clockwise until it
engages.

Insert corner-illuminating front fog
lamp 1 back into bumper.

Fasten retaining screws4.

Reinsert cover 2 and press it in until it
engages.

Fasten retaining screw3.Additional turn signal lamps bulbs
The additional turn signal lamps in the
exterior rear view mirrors have LEDs.
If a malfunction occurs or LEDs fail to func-
tion, the entire turn signal unit must be re-
placed. Have the turn signal unit replaced
by an authorized Mercedes-Benz Light
Truck Center.
Front sidemarker lamp bulbs
Since replacing the sidemarker lamp bulbs
is a technically highly demanding process,
we recommend you have the sidemarker
lamp bulbs replaced by an authorized
Mercedes-Benz Light Truck Center.
Replacing bulbs for rear lamps
Before you start to replace a bulb for a rear
lamp, do the following first:
Turn the combination switch to
positionM (
page 147).
Tail lamp unit

Open the tailgate (
page 122).
iTo access the tail lamp units, you have
to remove the cover in the correspond-
ing side trim panel of the cargo com-
partment.


473 Practical hints
Replacing bulbs
Opening the side trim panels
1Lock
2Cover in left side trim panel
1Lock
2Cover in right side trim panel

Insert a suitable object such as a coin
into the slot of lock1.

Turn lock1 clockwise (left side trim
panel) or counterclockwise (right side
trim panel) by 90° in direction of arrow.

Remove cover2.
Replacing bulbs
1Tail, sidemarker, standing, and parking
lamp bulb socket
2Turn signal lamp bulb socket
3Fog lamp bulb socket
(driver’s side only)
4Backup lamp bulb socket

Depending on which bulb needs to be
replaced, turn the respective bulb
socket 1 - 4 counterclockwise.

Pull the bulb socket out of the housing.

Similarly turn the bulb counterclock-
wise carefully and pull the bulb out of
bulb socket.

Insert the new bulb into the bulb sock-
et.

Turn the bulb in the bulb socket clock-
wise carefully.

Insert the bulb socket into the housing.

Turn the bulb socket clockwise until it
engages.

474 Practical hintsReplacing bulbsLicense plate lamp
1License plate lamp cover
2Screw
Loosen screws2.

Remove license plate lamp cover1.

Replace the license plate lamp bulb.

Reinstall license plate lamp cover1.

Retighten screws2.

475 Practical hints
Replacing wiper blades
Replacing wiper blades
Front wiper blades Removing

Remove the SmartKey from the starter
switch.
or

Vehicles with KEYLESS-GO*:
Make sure the vehicle’s on-board
electronics have status0 (
page 39).

Fold the wiper arms forward until they
engage.1Wiper blade
2Tab
3Wiper arm

Press tabs2 together.

Tilt wiper blade 1 away from wiper
arm 3.

Take off wiper blade 1 in direction of
arrow.
!Never open the hood when the wiper
arms are folded forward.
Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the windshield.
Do not allow the wiper arms to contact
the windshield glass without a wiper
blade inserted.
Make sure the wiper blades are proper-
ly installed. Improperly installed wiper
blades may cause windshield damage.
For your convenience, we recommend
that you have this work carried out by
an authorized Mercedes-Benz Light
Truck Center.
Warning!
G
For safety reasons, switch off wipers and
remove the SmartKey from starter switch
(vehicles with KEYLESS-GO*: Make sure the
vehicle’s on-board electronics have
status0) before replacing a wiper blade.
Otherwise the motor could suddenly turn on
and cause injury.

476 Practical hintsReplacing wiper bladesInstalling
1Wiper blade
2Attachment
3Guide tab
4Opening
With guide tab 3 sliding into opening
4, place wiper blade 1 onto wiper
arm in direction of arrow.

Fold wiper blade 1 towards wiper
arm.
Tabs 2 must engage into both recess-
es of attachment 2.

Check whether the wiper blade is
securely fastened.

Fold the wiper arm backward to rest on
the windshield.
Make sure to hold on to the wiper when
folding the wiper arm back.
Rear wiper bladeWarning!
G
For safety reasons, switch off wipers and
remove SmartKey from starter switch
(vehicles with KEYLESS-GO*: Make sure the
vehicle’s on-board electronics have
status0) before replacing a wiper blade.
Otherwise the motor could suddenly turn on
and cause injury.!Hold on to the wiper when folding the
wiper arm back. If released, the force
of the impact from the tensioning
spring could crack the rear window.
Do not allow the wiper arms to contact
the rear window glass without a wiper
blade inserted.

477 Practical hints
Replacing wiper blades
Removing
Remove the SmartKey from the starter
switch.
or

Vehicles with KEYLESS-GO*:
Make sure the vehicle’s on-board
electronics have status0 (
page 39).

Fold wiper arm 1 away from the rear
window until it engages.
1Wiper arm
2Wiper blade

Turn wiper blade2 to form a right an-
gle with wiper arm 1 as shown.

Hold wiper arm 1 and disengage wip-
er blade 2 by carefully sliding it in
direction of arrow.

Remove wiper blade 2.Installing
1Wiper arm
2Wiper blade

Insert wiper blade 2 into wiper
arm1.

Hold wiper arm 1 and engage wiper
blade 2 by pushing it in direction of ar-
row until it locks into place.

Check whether the wiper blade is
securely fastened.

Fold the wiper arm to rest on the rear
window.
Make sure to hold on to the wiper when
folding the wiper arm back. Make sure the wiper blades are proper-
ly installed. Improperly installed wiper
blades may cause rear window dam-
age.
For your convenience, we recommend
that you have this work carried out by
an authorized Mercedes-Benz Light
Truck Center.

478 Practical hintsFlat tire
Preparing the vehicle
Park the vehicle in a safe distance from
moving traffic on a hard, flat surface
when possible.

Turn on the hazard warning flasher
(page 153).

Turn the steering wheel so that the
front wheels are in a straight-ahead
position.

Set the parking brake (
page 65).

Set the automatic transmission to P
(page 197).
Vehicles with SmartKey:

Turn off the engine (
page 66).

Remove the SmartKey from the starter
switch.Vehicles with KEYLESS-GO*:

Turn off the engine by pressing the
KEYLESS-GO* button once
(page 66).

Open the driver’s door (this puts the
starter switch in position 0, same as
with the SmartKey removed from the
starter switch). The driver’s door then
can be closed again.

Have any passenger exit the vehicle at
a safe distance from the roadway.
Warning!
G
The dimensions of the spare wheel are dif-
ferent from those of the road wheels. As a
result, the vehicle handling characteristics
change when driving with a spare wheel
mounted. Adapt your driving style accord-
ingly.
The spare wheel is for temporary use only.
When driving with spare wheel mounted,
ensure proper tire inflation pressure and do
not exceed a vehicle speed of
50 mph (80 km/ h).
Drive to the nearest Mercedes-Benz Light
Truck Center as soon as possible to have the
spare wheel replaced with a regular road
wheel.
Never operate the vehicle with more than
one spare wheel mounted.
Do not switch off the ESP
® with a spare
wheel mounted.
iOpen doors only when conditions are
safe to do so.

479 Practical hints
Flat tire
Mounting the spare wheel
Preparing the vehicle
Prepare the vehicle as described
(page 478).

Take the wheel wrench and the vehicle
jack from the vehicle tool kit
(page 455).

Take the spare wheel from the wheel
well under the cargo compartment
floor (
page 458).Lifting the vehicle

Prevent the vehicle from rolling away
by blocking wheels with wheel chocks
or other sizable objects.
One wheel chock is included with the
vehicle tool kit (
page 455).
When changing wheel on a level surface:

Place the wheel chock in front of and
another sizable object behind the
wheel that is diagonally opposite to the
wheel being changed.
Always try lifting the vehicle using the jack
on a level surface. However, should cir-
cumstances require you to do so on a hill,
place the wheel chock and another sizable
object as follows:

Place the wheel chock and another
sizable object on the downhill side
blocking both wheels of the axle not
being worked on.
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,
especially on hills. Always try to use the jack
on level surface. Make sure the jack arm is
fully seated in the jack take-up bracket.
Always lower the vehicle onto sufficient
capacity jackstands before working under
the vehicle.