Page 63 of 376

63
Safety and Security
Occupant safety
Warning!
G
Never ride in a moving vehicle with the seat
backrest reclined. Sitting in an excessively
reclined position can be dangerous. You
could slide under the seat belt in a collision.
If you slide under it, the belt would apply
force at the abdomen or neck. That could
cause serious or even fatal injuries. The seat
backrest and seat belt provide the best re-
straint when the wearer is in an upright po-
sition and the belt is properly positioned on
the body.Warning!
G
Never let more people ride in the vehicle
than there are seat belts available. Be sure
everyone riding in the vehicle is correctly re-
strained with a separate seat belt.
Warning!
G
Damaged seat belts or belts that were highly
stressed in an accident must be replaced
and their anchoring points must also be
checked.
Only use seat belts which have been ap-
proved by Mercedes-Benz.
Do not make any modifications to the seat
belts. This can lead to unintended activation
or to failure.
Have all work carried out only by qualified
technicians. Contact an authorized
Mercedes-Benz Center.
Warning!
G
USE SEAT BELTS PROPERLY
Seat belts can only work when used
properly. Never wear seat belts in any
other way than as described in this sec-
tion, as that could result in serious inju-
ries in case of an accident.
Each occupant should wear their seat
belt at all times, because seat belts help
reduce the likelihood of and potential
severity of injuries in accidents, includ-
ing rollovers. The integrated restraint
system includes SRS (driver airbag, pas-
senger front airbag, side impact airbags,
head protection window curtain airbags
for side windows), ETD (seat belt emer-
gency tensioning device), and front seat
knee bolsters. The system is designed
to enhance the protection offered to
properly belted occupants in certain
frontal (front airbags) and side (side im-
pact and window curtain airbags) im-
pacts which exceed preset deployment
thresholds.
Page 81 of 376
81
Controls in detail
Locking and unlocking
Seats
Memory function*
Lighting
Instrument cluster Control system
Manual transmission
Automatic transmission*
Good visibility
Climate control
Audio system
Power windows
Panorama sliding/pop-up roof* Driving systems
Loading
Useful features
Page 82 of 376

82 Controls in detailLocking and unlockingIn the “Controls in detail” section you will
find detailed information on how to oper-
ate the equipment installed on your vehi-
cle. If you are already familiar with the
basic functions of your vehicle, this section
will be of particular interest to you.
To quickly familiarize yourself with the ba-
sic functions of the vehicle, refer to the
“Getting started” section of this manual.
The corresponding page numbers are giv-
en at the beginning of each segment.
Locking and unlocking
Keys
Your vehicle comes supplied with two
SmartKeys, each with remote control and
a removable mechanical key. The locking
tabs for the mechanical key portion of the
two keys are a different color to help dis-
tinguish each key unit.
The SmartKey provides an extended oper-
ating range. To prevent theft, however, it is
advisable to only unlock the vehicle when
you are in close proximity to it.
The SmartKey centrally locks and unlocks:
the doors
the trunk lid
the fuel filler flap
SmartKey with remote controls1‹ Lock button
2 Mechanical key locking tab
3 Œ Unlock button
4 Battery check lamp
5 Â Panic button* (
page 72)
iYou can also open and close the power
windows (
page 186) and panorama
sliding/pop-up roof* (
page 192) us-
ing the SmartKey.
iCanada only:
Only vehicles equipped with an
anti-theft alarm system* have
SmartKeys with integrated panic
button* 5.
Page 146 of 376

146 Controls in detailGood visibility
Good visibilityInformation on the windshield wipers
(page 49) and for setting the rear view
mirrors (
page 39) is found in the “Get-
ting started” section.
Rear view mirrors
Interior rear view mirror, antiglare posi-
tion
1 Lever
Tilt the mirror to the antiglare night posi-
tion using lever 1. Automatic antiglare rear view mirrors*
The reflection brightness of the exterior
rear view mirror on the driver’s side and
the interior rear view mirror will respond
automatically to glare when
the ignition is switched on
and
incoming light from headlamps falls on
the sensor in the interior rear view mir-
ror.
The rear view mirror will not react if
reverse gear is engaged
the interior lighting is turned on.
Warning!
G
The automatic antiglare function does not
react if incoming light is not aimed directly
at sensors in the interior rear view mirror.
The interior rear view mirror and the exterior
rear view mirror on the driver’s side do not
react, for example, when transporting cargo
which covers the rear window.
Glare can endanger you and others.Warning!
G
In the case of an accident liquid electrolyte
may escape from the mirror housing if the
mirror glass breaks.
Electrolyte has an irritating effect. Do not al-
low the liquid to come into contact with
eyes, skin, clothing, or respiratory system.
In case it does, immediately flush affected
area with water, and seek medical help if
necessary.
Page 149 of 376

149
Controls in detail
Good visibility
Rear window defroster
The rear window defroster uses a large
amount of power. To keep the battery
drain to a minimum, switch off the defrost-
er as soon as the rear window is clear. The
defroster is automatically deactivated af-
ter approximately 6 to 17 minutes of oper-
ation depending on the outside
temperature.
Activating
Press button
F (
page 151).
The indicator lamp on the button
comes on. Deactivating
Press button
F (
page 151) again.
The indicator lamp on the button goes
out.
Warning!
G
Any accumulation of snow and ice should be
removed from the rear window before driv-
ing. Visibility could otherwise be impaired,
endangering you and others.
!If the rear window defroster switches
off too soon and the indicator lamp
starts flashing, this means that too
many electrical consumers are operat-
ing simultaneously and there is insuffi-
cient voltage in the battery. The system
responds automatically by deactivating
the rear window defroster.
As soon as the battery has sufficient
voltage, the rear window defroster au-
tomatically turns itself back on.
Page 151 of 376
151
Controls in detail
Climate control
Climate control panel
The storage compartment between the
front seats can be ventilated (
page 157).
For information on rear passenger com-
partment adjustable air vents see “Rear
passenger compartment adjustable air
vents” (
page 158).
Item
1
Climate control panel
2
Left center air vent, adjustable
3
Right center air vent, adjustable
4
Thumbwheel for air volume control
for left center air vent
5
Thumbwheel for air volume control
for right center air vent
6
Air volume control for side air vent
7
Side air vent, adjustable
8
Side defroster vent, fixediFor draft-free ventilation, move the slid-
ers for the center air vents 2, 3
and 7 to the middle position.
Item
1
Air volume control
2
Left-side temperature control
3
Right-side temperature control
4
Air distribution control switch
5
Rear window defroster
6
AC cooling on/off (AC
OFF)
7
Air distribution and air volume
(automatic)
8
Air recirculation
9
Defrosting
Page 152 of 376

152 Controls in detailClimate controlThe climate control is operational whenev-
er the engine is running. You can operate
the climate control system in either the au-
tomatic or manual mode. The system cools
or heats the interior depending on the se-
lected interior temperature and the cur-
rent outside temperature.Nearly all dust particles, pollutants and
odors are filtered out before outside air en-
ters the passenger compartment through
the air distribution system.
The air conditioning will not engage (no
cooling) if the
AC
OFF
mode is selected
(
page 156).
Warning!
G
When operating the climate control, the air
that enters the passenger compartment
through the air vents in the footwell can be
very hot or very cold (depending on the set
temperature). This may case burns or frost-
bite on unprotected skin in the immediate
area of the air vents. Always keep sufficient
distance between unprotected parts of the
body and the footwell air vents. If necessary,
change the air flow using the air distribution
controls to direct the air away from the foot-
well air vents (
page 153).
Warning!
G
Follow the recommended settings for heat-
ing and cooling given on the following pag-
es. Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
iSevere conditions (e.g. strong air pollu-
tion) may require replacement of the fil-
ter before its scheduled interval. A
clogged filter will reduce the air volume
to the interior.
If the vehicle interior is hot, ventilate
the interior before driving off.
Keep the air intake grille in front of the
windshield free of snow and debris.
Page 153 of 376

153
Controls in detail
Climate control
Setting the temperature
Use temperature controls
2 and 3 to
separately adjust the air temperature on
each side of the passenger compartment.
You should raise or lower the temperature
setting in small increments, preferably
starting at 72°F (22°C).
Increasing
Turn the temperature control 2 or 3
slightly to the right.
The climate control system will corre-
spondingly adjust the interior air tem-
perature. Decreasing
Turn the temperature control
2 or 3
slightly to the left.
The climate control system will corre-
spondingly adjust the interior air tem-
perature.
Adjusting air distribution and volume
Use the air distribution control 4
(page 151) to adjust the air distribution.
The following symbols are found on the
controls: Use the air volume control
1 to adjust the
air volume. You can select between six air
volume speeds.
Adjusting manually
Press the U button.
The indicator lamp on the button goes
out.
Select any of the six air volume speeds
using the air volume control 1
(page 151) and the air distribution.
Adjusting automatically
Press the U button.
The indicator lamp on the button
comes on. The air distribution and vol-
ume is adjusted automatically.
Windshield fogged on the outside
Switch the windshield wipers on.
Switch to manual mode.
Turn the air distribution control
to a orY .
iWhen operating the climate control
system in automatic mode, you will
only rarely need to adjust the tempera-
ture, air volume and air distribution.
Symbol
Function
a
Directs air through the cen-
ter, side and rear passen-
ger compartment air vents
Z
Directs air to the windows
X
Directs air into the entire
vehicle interior
Y
Directs air to the footwells