2008 MERCEDES-BENZ R320 child lock

241 Controls in detail
Power windows
Power windows
The door windows and the hinged quarter
windows* are opened and closed electri-
cally. The switches for all door windows
and the hinged quarter windows* are
located on the driver’s door control panel.
The switches for the respective door win-
dows are located on the front passenger
door and the rear doors. The hinged
quarter windows* can be operated from
the driver’s seat only.
Switch on the ignition (page 39).
Warning!G
When closing the windows, make sure that
there is no danger of anyone being harmed
by the closing procedure.
Activate the override switch (
page 97)
when children are riding in the back seats of
the vehicle. The children could otherwise in-
jure themselves, e.g. by becoming trapped
in the window opening.
The closing of a door window can be imme-
diately halted by releasing the switch or, if
switch was pulled past the resistance point
and released, by either pressing or pulling
the respective switch.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you pulled the switch past the resistance
point and released it to close the door win-
dow, the automatic reversal function will
stop the door window and open it slightly.
If a door window encounters an obstruction
that blocks its path in a circumstance where
you are closing a door window by pulling and
holding the switch, or by pressing and hold-
ing button‹on the SmartKey, by press-
ing and holding the lock button (vehicles
with KEYLESS-GO*) on the door handle, the
automatic reversal function will not operate.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from starter switch, take it with you, and
lock the vehicle. Do not leave childrenunattended in the vehicle, or with access to
an unlocked vehicle. A child’s unsupervised
access to a vehicle could result in an
accident and/or serious personal injury.
iYou can also open or close the windows
using the SmartKey, see “Summer opening
feature” (
page 244) and “Convenience
closing feature” (
page 245).
Depending on the current position, the power
windows may also open or close when the air
recirculation button:on the control panel
of the climate control (
page 210) or automatic
climate control* (
page 224) is pressed and
held.
iAfter switching off the ignition (page 39)
or removing the SmartKey from the starter
switch, the windows can be operated

until you open the driver’s or front passenger
door

for at least 5 minutes if nor door was opened

248 Controls in detail
Power tilt/sliding sunroof*
Opening and closing
Warning!G
When closing the tilt/sliding sunroof, make
sure that there is no danger of anyone being
harmed by the closing procedure.
If the tilt/sliding sunroof encounters an
obstruction that blocks its path in a circum-
stance where you are closing the tilt/sliding
sunroof by moving the tilt/sliding sunroof
switch past the resistance point, or by
pressing and holding button‹on the
SmartKey, by pressing and holding the lock
button (vehicles with KEYLESS-GO*) on the
door handle, the automatic reversal function
will not operate.
The opening/closing procedure of the
tilt/sliding sunroof can be immediately
halted by releasing the switch or, if the
switch was moved past the resistance point
and released, by moving the switch in any
direction.
The tilt/sliding sunroof is made out of glass.
In the event of an accident, the glass may
shatter. This may result in an opening in the
roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening also presents a potential for injury
for occupants wearing their seat belts prop-
erly as entire body parts or portions of them
may protrude from the passenger compart-
ment.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock your vehicle. Do not leave children
unattended in the vehicle, or with access to
an unlocked vehicle. A child’s unsupervised
access to a vehicle could result in an
accident and/or serious personal injury.!To avoid damaging the seals, do not trans-
port any objects with sharp edges which can
stick out of the tilt/sliding sunroof.
Do not open the tilt/sliding sunroof if there is
snow or ice on the roof, as this could result in
malfunctions.
!Please keep in mind that weather conditions
can sometimes change rapidly. Make sure to
close the tilt/sliding sunroof when leaving the
vehicle. If water enters the vehicle interior,
vehicle electronics could be damaged which is
not covered by the Mercedes-Benz Limited
Warranty.
iWhen the tilt/sliding sunroof is open,
resonance noises may result in addition to the
usual wind noises. They are caused by minimal
pressure changes in the passenger compart-
ment. To reduce or eliminate theses noises,
change the position of the tilt/sliding sunroof or
open a door window slightly.

253 Controls in detail
Panorama roof with power tilt/sliding panel*
Opening and closing the panorama roof
with power tilt/sliding panel
Switch on the ignition (page 39).
Warning!G
When opening or closing the tilt/sliding
panel, make sure that there is no danger of
anyone being harmed by the opening or
closing procedure.
The opening procedure of the tilt/sliding
panel can be immediately halted by releas-
ing the switch or, if the switch was moved
past the resistance point and released, by
moving the switch in any direction.
The closing procedure of the tilt/sliding
panel can be immediately halted by releas-
ing the switch.
The panorama roof with power tilt/sliding
panel is made out of glass. In the event of
an accident, the glass may shatter. This may
result in an opening in the roof.
In a vehicle rollover, occupants not wearing
their seat belts or not wearing them properly
may be thrown out of the opening. Such an
opening also presents a potential for injury
for occupants wearing their seat belts
properly as entire body parts or portions of
them may protrude from the passenger
compartment.
When leaving the vehicle, always remove the
SmartKey or the SmartKey with
KEYLESS-GO* from the starter switch, take
it with you, and lock the vehicle. Do not
leave children unattended in the vehicle, or
with access to an unlocked vehicle.
A child’s unsupervised access to a vehicle
could result in an accident and/or serious
personal injury.
!To avoid damaging the seals, do not trans-
port any objects with sharp edges which can
stick out of the tilt/sliding panel.
Do not open the tilt/sliding panel if there is
snow or ice on the roof, as this could result in
malfunctions.
!Please keep in mind that weather conditions
can sometimes change rapidly. Make sure to
close the tilt/sliding panel when leaving the
vehicle. If water enters the vehicle interior,
vehicle electronics could be damaged which is
not covered by the Mercedes-Benz Limited
Warranty.
iWhen the tilt/sliding panel is open,
resonance noises may result in addition to the
usual wind noises. They are caused by minimal
pressure changes in the passenger compart-
ment. To reduce or eliminate theses noises,
change the position of the tilt/sliding panel or
open a door window slightly.
iYou can also open or close the tilt/sliding
panel using the SmartKey or the KEYLESS-GO*
function, see “Summer opening feature”
(
page 244) and “Convenience closing
feature” (
page 245).
iThe tilt/sliding panel may also open when
using the air recirculation button: on the
control panel of the climate control
(
page 210) or automatic climate control*
(
page 224).

313 Controls in detail
Useful features
1Ashtray cover
2Ashtray insert
Push on ashtray insert 2 and pull it
out upwards.
Reinstalling ashtray insert
Insert ashtray insert 2 into opening.
Push down ashtray insert 2 until it
engages.
Close ashtray cover 1.
Cigarette lighter
Switch on the ignition (page 39).1Cover
2Cigarette lighter
Open cover1 (page 311).
Push in cigarette lighter2.
The cigarette lighter will pop out auto-
matically when hot.
Take out cigarette lighter2.
Warning!G
Never touch the heating element or sides of
the cigarette lighter; they are extremely hot.
Hold the knob only.
Make sure that any children traveling with
you do injure themselves or start a fire with
the hot cigarette lighter.
When leaving the vehicle always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock the vehicle. Do not leave children
unattended in the vehicle, or with access to
an unlocked vehicle. A child’s unsupervised
access to a vehicle could result in an
accident and/or serious personal injury.

403 Operation
Vehicle care
Vehicle care
Cleaning and care of the vehicle
Regular and proper care will help to main-
tain the value of your vehicle. The best way
to protect your vehicle from harmful envi-
ronmental influences is to wash it and use
protective treatments regularly.While in operation, even while parked, your
vehicle is subjected to varying external in-
fluences which, if gone unchecked, can at-
tack the paintwork as well as the vehicle
underbody and cause lasting damage.
Such damage is caused not only by
extreme and varying climatic conditions,
but also by:

Air pollution

Road salt

Tar

Gravel and stone chipping
To avoid paint damage, you should imme-
diately remove:

Grease and oil

Fuel

Coolant

Brake fluid

Bird droppings

Insects

Tree resins, etc.Frequent washing reduces and/or elimi-
nates the aggressiveness and potency of
the above adverse influences.
More frequent washings are necessary to
deal with unfavorable conditions:

near the ocean

in industrial areas (smoke, exhaust
emissions)

during winter operation
You should check your vehicle from time to
time for stone chipping or other damage.
Any damage should be repaired as soon as
possible to prevent corrosion.
In doing so, do not neglect the underbody
of the vehicle. A prerequisite for a thor-
ough check is a washing of the underbody
followed by a thorough inspection. Dam-
aged areas need to be re-undercoated.
Your vehicle has been treated at the fac-
tory with a wax-base rustproofing in the
body cavities which will last for the lifetime
of the vehicle. Post-production treatment
is neither necessary nor recommended by
Warning!G
Many cleaning products can be hazardous.
Some are poisonous, others are flammable.
Always follow the instructions on the partic-
ular container. Always open your vehicle’s
doors or windows when cleaning the inside.
Never use fluids or solvents that are not de-
signed for cleaning your vehicle.
Always lock away cleaning products and
keep them out of reach of children.

479 Practical hints
Replacing SmartKey batteries
Replacing SmartKey batteries
If the batteries in the SmartKey or the
SmartKey with KEYLESS-GO* 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 474).
1Mechanical key
2Battery compartment
Insert mechanical key 1 into opening.
Press mechanical key 1 in direction of
arrow.
The battery compartment is unlatched.
Pull battery compartment 2 out of the
SmartKey housing.
3Batteries
4Contact springs
Pull out batteries3.
Using a line-free cloth, insert new bat-
teries 3 under contact springs 4 with
the positive terminal (+) side facing up.
Return battery compartment 2 into
housing until it locks into place.
Slide mechanical key 1 back into
SmartKey.
Check the operation of the SmartKey
or SmartKey with KEYLESS-GO*.
Warning!G
Keep the batteries out of reach of children.
If a battery is swallowed, seek medical help
immediately.
iWhen inserting 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.

545 Index
A
ABS 99
Indicator lamp 414, 415
Messages in the multifunction
display 429
Accelerator position, automatic
transmission 197
Accessory weight 393
Accident 63
Active head restraint 86, 133, 477
Air bags 72
Children 73, 89
Front, Driver 75
Front, Passenger 75
Messages in the multifunction
display 438–441
Occupant Classification System
(OCS) 77
Safety guidelines 74
Side impact 76
Window curtain 76
Air conditioning, Cooling 219, 233
Air conditioning refrigerant 538Air conditioning system see
Climate control or Automatic climate
control (3-zone)*
Air distribution 213, 228
Air pressure see Tire inflation pressure
Air pressure, Tires 393
Air pump, Electric 499
Air recirculation mode 216, 231
Air vents, Front 208, 214, 222, 228
Air vents, Rear 220, 236, 239, 240
Air volume 214, 229
AIRMATIC* 276
Messages in the multifunction
display 464, 465
Alarm system see Anti-theft systems
Alignment bolt (vehicle tool kit) 467, 497
All-wheel drive see Permanent four-wheel
drive 281
Anticorrosion/antifreeze 541, 544
Antiglare, Interior rear view mirror 203
Antiglare, Auto-dimming rear view
mirrors* 203Anti-theft systems 106
Anti-theft alarm system 106
Immobilizer 106
Aquaplaning see Hydroplaning
Arm rests, Second-row 137
Armrest storage compartments
Front 306
Rear* 306
Telephone* tray 306
Ashtrays 311
Aspect ratio 393
ATF 360
AUDIO menu 165
CD operation 167
Radio operation 166
Satellite radio* operation 166
Audio search function 182
Auto-dimming*, Rear view mirrors 203
Automatic antiglare for rear view
mirrors* 203
Automatic central locking, Control
system 183

547 Index
Bleeding the fuel system (diesel
engine) 502
Bolts, Spare wheel 498
Bottle opener 309
Brake Assist System see BAS
Brake fluid 539
Checking 355
Messages in the multifunction
display 447
Brake lamp
Cleaning lenses 407
Messages in the multifunction
display 455–460
Replacing bulbs 480
Brake pads 340
Messages in the multifunction
display 445
Brakes 340
Warning lamp 415
Break-in the vehicle 338
Bulbs, replacing see Replacing bulbsC
CAC (Customer Assistance Center) 17
California retail buyers and lessees,
Important notice for 11
Call priority, Tele Aid* 328
Can holder see Cup holder
Capacities and recommended
fuel/lubricants 536
Card holder 32, 309
Cargo compartment
Tie-down rings 290
Cargo compartment cover blind 299
Cargo net* 301
Cargo tie-down rings 290
Carpets, Cleaning 411
Catalytic converter (gasoline
engine) 349
CD changer* 167, 304
CD player 167
Center console 31
Central locking 183
Automatic 126
Locking/unlocking from the
inside 126Central locking switch 126
Certification label 524, 525
CHECK ENGINE malfunction indicator
lamp 417, 418
Checking tire pressure electronically
Advanced Tire Pressure Monitoring
System (Advanced TPMS)*, (Canada
only) 379
Tire Pressure Monitoring System
(TPMS), (USA only) 376
Child safety
Infant and child restraint systems 88
Children in the vehicle 87
Air bags 73, 89
Blocking rear door window
operation 97
Indicator lamp, Front passenger front
air bag 81
Infant and child restraint
systems 91, 92
LATCH-type child seat anchors 91
Occupant Classification System
(OCS) 77
Cigarette lighter 313