MERCEDES-BENZ R350 2007 R171 Owner's Manual

490 Practical hints
Replacing bulbs
Example illustration (R 63 AMG)
1Corner-illuminating front fog lamp*
2Cover
3Retaining screws
Remove retaining screw(s)3.
All models except R 63 AMG:
Insert a suitable object (e.g.
screwdriver) at point indicated by the
arrow and pry out cover 2.
Cover 2 is released.
Swing cover 2 outwards and take it
off.
R63AMG:
Take off cover 2.
Example illustration (except R 63 AMG)
Example illustration (R 63 AMG)
4Retaining screws
Remove screws4 that retain front fog
lamp 1.
Remove corner-illuminating front fog
lamp 1.
5Corner-illuminating front fog lamp bulb
socket
iR 63 AMG only:
An additional adapter cable is used to connect
the bulb socket with the vehicle’s electrical
circuit. Reuse the adapter cable after replacing
the bulb.

491 Practical hints
Replacing bulbs
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.
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 screw(s)3.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
function, the entire turn signal unit must
be replaced. Have the turn signal unit re-
placed by an authorized Mercedes-Benz
Light Truck Center.
Front side marker lamp bulbs
Since replacing the side marker lamp bulbs
is a technically highly demanding process,
we recommend you have the side marker
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 146).
Tail lamp unit
Open the tailgate (page 123).
iTo access the tail lamp units, you have to
remove the cover in the corresponding side trim
panel of the cargo compartment.

492 Practical hints
Replacing bulbs
Opening the side trim panels
1Lock
2Cover in left side trim panel
1Lock
2Cover in right side trim panelInsert 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, side marker, 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
socket.
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.

493 Practical hints
Replacing bulbs
License plate lamps
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.

494 Practical hints
Replacing wiper blades
Front wiper blades
Removing
Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*:
Make sure the vehicle’s on-board
electronics have status0
(
page 41).
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.
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.
Warning!G
Wiper blades are components that are sub-
ject to wear and tear. Change the wiper
blades twice a year, preferably in the spring
and fall. Otherwise the windows will not be
properly wiped. As a result, you may not be
able to observe surrounding traffic condi-
tions and could cause an accident.
!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 wind-
shield glass without a wiper blade inserted.
Make sure the wiper blades are properly in-
stalled. 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.
!Do not pull on the wiper blade inserts. They
could tear.

495 Practical hints
Replacing wiper blades
Installing
1Wiper blade
2Attachment
3Guide tab
4Opening
With guide tab 3 sliding into
opening4, place wiper blade 1 onto
wiper arm in direction of arrow.
Fold wiper blade 1 towards wiper
arm.
Tabs 2 (
page 494) must engage
into both recesses 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 blade
Warning!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.
For your convenience, we recommend that you
have this work carried out by an authorized
Mercedes-Benz Light Truck Center.
Make sure the wiper blades are properly in-
stalled. Improperly installed wiper blades may
cause rear window damage.

496 Practical hints
Replacing wiper blades
Removing
Remove the SmartKey from the starter
switch.
Vehicles with KEYLESS-GO*
Make sure the vehicle’s on-board
electronics have status0
(
page 41).
1Wiper arm
2Wiper blade
Fold wiper arm 1 away from the rear
window until it engages.
Turn wiper blade2 to form a right
angle with wiper arm 1 as shown.
Hold wiper arm 1 and disengage
wiper 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
arrow until it locks into place.
Check whether the wiper blade is
securely fastened.
Fold the wiper arm to rest on the rear
window.
M a k e s u r e t o h o l d o n t o t h e w i p e r w h e n
folding the wiper arm back.
!Do not pull on the wiper blade insert. It
could tear.

497 Practical hints
Flat tire
Flat 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 152).
Turn the steering wheel so that the
front wheels are in a straight-ahead
position.
Set the parking brake (page 66).
Set the automatic transmission to
position P (
page 197).
Turn off the engine (page 67).
Have any passenger exit the vehicle at
a safe distance from the roadway.
Remove the SmartKey from the starter
switch.Vehicles with KEYLESS-GO*:
Turn off the engine by pressing the
KEYLESS-GO* button once
(
page 67).
Open the driver’s door (this puts
the starter switch in position 0,
same as with the SmartKey re-
moved from the starter switch). The
driver’s door then can be closed
again.
Remove the KEYLESS-GO*
start/stop button from the starter
switch.
Warning!G
The dimensions of the spare wheel are
different 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.
iYou can use the power outlets in the cargo
compartment or in the second seat row to
operate the electric air pump even when the
ignition is switched off, e.g. in order to inflate the
collapsible tire (
page 501).
An emergency shut-off feature ensures that the
vehicle’s electrical voltage does not fall below a
minimum level. If the voltage drops to this mini-
mum level, the power outlets are automatically
switched off. This ensures that enough power
remains to start the engine.

498 Practical hints
Flat tire
Mounting the spare wheel
Preparing the vehicle
Prepare the vehicle as described
(
page 497).
Take the wheel wrench and the vehicle
jack from the vehicle tool kit
(
page 473).
Take the spare wheel from the wheel
well under the cargo compartment
floor (
page 476).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 473).
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 vehi-
cle onto sufficient capacity jackstands be-
fore working under the vehicle.

499 Practical hints
Flat tire
1Wheel wrench
On whee l to b e c hang ed, l oose n but d o
not yet remove the wheel bolts
(approximately one full turn with wheel
wrench 1).
The jack take-up brackets are located
directly behind the front wheel housings
and in front of the rear wheel housings.
2Take-up bracket
3Jack
4Crank
Place jack 3 on firm ground.
Position jack3 under the take-up
bracket2 so that it is always vertical
(plumb-line) as seen from the side,
even if the vehicle is parked on an
incline.
Turn crank4 clockwise until jack 3
is fully seated in take-up bracket2
and the jack base evenly meets the
ground.
Continue to turn crank 4 until the
wheel is a maximum of 1.2 in (3 cm)
from the ground.
!Do not position the jack on the body of the
vehicle, as this may cause damage to the
vehicle.
Warning!G
The jack is intended only for lifting the
vehicle briefly for wheel changes. It is not
suited for performing maintenance work
under the vehicle.

Never start the engine when the vehicle
is raised.

Never lie down under the raised vehicle.