The ETDs for the rear outer seats will activate
with or without the respective seat belts
fastened.
In an impact, the ETDs remove slack from the
seat belts in such a way that the seat belts fit
more snugly against the body. Seat belt force
limiters, when activated, are employed to
help reduce the peak force exerted by the
seat belts on occupants during a crash.
i The ETDs do not correct an incorrect seat
position or incorrectly worn seat belts.
The ETDs do not pull occupants back
toward the seat backrest.GWarning!
Pyrotechnic ETDs that were activated must be
replaced.
For your safety, when disposing of the
pyrotechnic ETDs always follow our safety
instructions. These are available at any
authorized Mercedes-Benz Center.
The PRE-SAFE ®
system has electrically
operated reversible pre-tensioners that do
not require replacement after activation.
Automatic comfort-fit feature seat belt
An automatic comfort-fit feature for the front
seats reduces the retracting force of the seat
belts when they are in normal use.
Preventive occupant safety (PRE-
SAFE ®
)
GWarning!
The PRE-SAFE ®
system is intended to reduce
the effects of an accident on vehicle
occupants who are wearing their seat belt
properly. Despite your vehicle being equipped
with the PRE-SAFE ®
system, the possibility of
personal injuries occurring as a result of an
accident cannot be eliminated. Therefore,
always drive carefully and adjust your driving
to the prevailing road, weather, and traffic
conditions.
The PRE-SAFE ®
system takes preventive
measures to better protect the occupants
from the possibility of personal injuries in the
following hazardous situations:
R emergency braking situations, e.g. if the
Brake Assist System (BAS) ( Y page 63) is
activated
or when
vehicles with DISTRONIC PLUS:
the BAS PLUS ( Y page 63) or the PRE-
SAFE ®
Brake ( Y page 69) is strongly
engaging
R when the radar sensors recognize the
immediate risk of collision in certain
situations (vehicles with DISTRONIC PLUS)
R critical dynamic driving situations, e.g.
when the vehicle has been caused to
understeer or oversteer because it has
exceeded its physical limitations or in case
of evasive steering maneuvers at speeds
above approximately 85 mph (140 km/h)
The PRE-SAFE ®
system takes the following
measures when it is activated:
R The front seat belts are pre-tensioned
automatically.
R If the front passenger seat is in an
unfavorable position, the seat will be
adjusted to a position that seeks to better
protect the occupant.
R The system increases the air pressure in
the air pockets (on the sides of the seat
cushion and backrest) of the drive-dynamic
multicontour front seats.
R If the vehicle is in a critical dynamic driving
situation, the door windows and the tilt/
sliding sunroof or panorama roof with tilt/
sliding panel also closes, except for a
minimal gap that remains open.
If the closing procedure of any of these
elements is blocked, it will stop and open
slightly.
Once the hazardous situation no longer exists
and an accident has been avoided, the PRE-
SAFE ®
system loosens the seat belt pre-Occupant safety53Safety and security212_AKB; 2; 41, en-USd2ureepe,Version: 2.11.8.12009-07-17T09:14:21+02:00 - Seite 53Z
Vehicle equipment ..............................76
Locking and unlocking .......................76
Starter switch positions .....................85
Seats ....................................................87
Multifunction steering wheel .............93
Mirrors .................................................94
Memory function .................................96
Lighting ................................................97
Wipers ................................................104
Power windows .................................105
Driving and parking ..........................109
Automatic transmission ...................114
Transfer case ....................................124
Instrument cluster ............................125
Control system ..................................126
Driving systems ................................146
Climate control system ....................180
Rear window defroster .....................191
Power tilt/sliding sunroof ...............192
Panorama roof with power tilt/
sliding panel ......................................194
Loading and storing ..........................197
Useful features .................................203
75Controls in detail212_AKB; 2; 41, en-USd2ureepe,Version: 2.11.8.12009-07-17T09:14:21+02:00 - Seite 75
XHave the SmartKey deactivated by an
authorized Mercedes-Benz Center.
XReport the loss of the SmartKey or the
mechanical key to your car insurance
company immediately.
XHave the mechanical lock replaced if
necessary.
Any authorized Mercedes-Benz Center will be
glad to supply you with a replacement. For
information on replacing the SmartKey, see
“Replacing the SmartKey” (Y page 80).
Replacing the SmartKey
Only you, or someone authorized by you can
order a replacement key from any Mercedes-
Benz Center. In order to do so, the Mercedes-
Benz Center will require proof of identity and
vehicle ownership with original documents,
including the following:
If you are the current owner of the vehicle:
Rthe vehicle’s current state registration
Ra current identity card, passport, or drivers
license
If you are an authorized person:
Rthe vehicle’s current state registration
Ra current identity card, passport, or drivers
license for the authorized individual
Rsigned and dated authorization from the
owner of the vehicle for which the key is
being requested
iDuplicated or photocopied
documentation will not be accepted.
Activating the key
Once you, or an authorized person, has
provided the appropriate documents, the
Mercedes-Benz Center will need to
synchronize the key to your vehicle before it
can be used. In order to do so, the Mercedes-
Benz Center need access to your vehicle.
Opening the doors from the inside
You can open a door from the inside even
when it is locked unless it is secured with the
child safety lock (Y page 60).
Open door only when conditions are safe to
do so.
Example illustration driver’s door
If the vehicle has previously been locked with
the SmartKey or with KEYLESS-GO, opening
a door from the inside will trigger the anti-
theft alarm system.
To cancel the alarm, see (Y page 73).
XFront doors: Pull on inside door
handle ; on the respective front door.
If the door was locked, locking knob : will
move up.
XRear doors: Pull up locking knob on the
respective rear door to unlock door.
Automatic central locking
The doors and the trunk lock automatically
when the vehicle is set into motion.
You can open a locked front door from the
inside. Open door only when conditions are
safe to do so.
The doors are designed to unlock
automatically after an accident if the force of
the impact exceeds a preset threshold.
The vehicle locks automatically when the
ignition is switched on and the wheels are
turning at a vehicle speed of above 9 mph
(15 km/h). You could therefore lock yourself
80Locking and unlockingControls in detail
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Closing when a door window is blockedGWarning!
Make sure that nobody can become trapped
and be seriously or even fatally injured when
closing a door window with greater force or
without automatic reversal function.
If the upward movement of a door window is
blocked during the closing procedure, the
door window will stop and open slightly.
XImmediately after the door window has
stopped because it was blocked, pull and
hold the respective switch upward until the
door window is fully closed.
The door window closes with greater force.
If the door window is blocked again and opens
slightly:
XImmediately after the door window was
blocked, pull and hold the respective
switch upward until the door window is fully
closed.
The door window closes without automatic
reversal function.GWarning!
Pulling and holding the switch to close the
door window immediately after it had been
blocked two times will cause the door window
to close without any reversal function for as
long as you hold the switch.
Synchronizing door windows
The door windows must be synchronized if
they cannot be fully closed (express
operation).
Each door window must be synchronized
separately.
XClose all doors.XSwitch on the ignition.XPull and hold switch :, ; , = or ?
( Y page 106) until the respective door
window is closed.
The door window opens again slightly.XPull and hold the respective switch once
more immediately until the door window is
closed completely.XHold the respective switch for
approximately 1 second.
The door window is synchronized.
Summer opening feature
When the weather is warm, you can ventilate
the vehicle before driving off by
simultaneously
R opening the door windows
R opening the tilt/sliding sunroof
R opening the panorama roof with power tilt/
sliding panel and roller sunblinds
R switching on the seat ventilation for the
driver’s seat
The summer opening feature can only be
activated via the remote control of the
SmartKey. The SmartKey must be in close
proximity to the driver’s outside door handle.
XAim the transmitter eye of the SmartKey at
the driver’s outside door handle.XPress button % on the SmartKey to
unlock the vehicle.
Keep button % pressed until the door
windows and the tilt/sliding panel of the
panorama roof or the tilt/sliding sunroof
have reached the desired position.
Vehicles with panorama roof with
power tilt/sliding panel: When the roller
sunblinds of the panorama roof with power
tilt/sliding panel are closed, the roller
sunblinds will open first.XPress button % once more until the tilt/
sliding panel of the panorama roof has
reached the desired position.XRelease button % on the SmartKey to
interrupt the opening procedure.Power windows107Controls in detail212_AKB; 2; 41, en-USd2ureepe,Version: 2.11.8.12009-07-17T09:14:21+02:00 - Seite 107Z
Convenience closing feature
When locking the vehicle, you can
simultaneously close
Rthe door windows
Rthe tilt/sliding sunroof
Rthe panorama roof with power tilt/sliding
panel
Afterward, you can extend the roller
sunblinds of the panorama roof with power
tilt/sliding panel.
GWarning!
When closing the door windows and the tilt/
sliding sunroof or panorama roof with power
tilt/sliding panel, make sure there is no
danger of anyone being harmed by the closing
procedure.
If potential danger exists, proceed as follows:
RRelease button & to stop the closing
procedure. To open, press and hold button
%. To continue the closing procedure
after making sure that there is no danger of
anyone being harmed by the closing
procedure, press and hold button &.
Vehicles with KEYLESS-GO:
RRelease the sensor surface on the outside
door handle to stop the closing procedure.
RImmediately pull on the same outside door
handle and hold firmly. The door windows
and the tilt/sliding sunroof or panorama
roof with power tilt/sliding panel will open
for as long as the door handle is held but
the door not opened.
With SmartKey
The SmartKey must be in close proximity to
the driver’s outside door handle.
XAim transmitter eye of the SmartKey at the
driver’s outside door handle.
XPress and hold button & on the
SmartKey until the door windows and the
tilt/sliding sunroof or panorama roof with
power tilt/sliding panel are closed
completely.
XRelease button & on the SmartKey to
interrupt the closing procedure.
XVehicles with panorama roof with
power tilt/sliding panel: Press and hold
button & on the SmartKey once more.
The roller sunblinds extend.
XRelease button & on the SmartKey to
interrupt the extending procedure.
With KEYLESS-GO
The SmartKey with KEYLESS-GO must be
located outside the vehicle within
approximately 3 ft (1 m) of a door.
XClose all doors.XTouch and hold sensor surface : on an
outside door handle (Y page 79) until the
door windows and the tilt/sliding sunroof
or panorama roof with power tilt/sliding
panel are closed completely.
iMake sure you are only touching sensor
surface :.
XRelease sensor surface : on the outside
door handle to interrupt the closing
procedure.
XVehicles with panorama roof with
power tilt/sliding panel: Touch and hold
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It can only function optimally when you are
driving with the windows, the tilt/sliding
sunroof or tilt/sliding panel closed.
Nearly all dust particles, pollutants and odors
are filtered out before outside air enters the
passenger compartment through the air
distribution system.GWarning!
Severe conditions (e.g. strong air pollution)
may require replacement of the filter before
its scheduled replacement interval. A clogged
filter will reduce the air volume to the interior
and the windows could fog up, impairing
visibility and endangering you and others.
Have a clogged filter replaced as soon as
possible at an authorized Mercedes-Benz
Center.
The air conditioning will not engage (no
cooling) if the A/C mode ( Y page 185) is
deactivated.
GWarning!
Follow the recommended settings for heating
and cooling given on the following pages.
Otherwise the windows could fog up,
impairing visibility and endangering you and
others.
XKeep the air intake grille in front of the
windshield free of snow and debris.
Do not obstruct air flow by placing objects on
the air flow-through exhaust slots below the
rear window.
i If the vehicle interior is hot, ventilate the
interior before driving off, see “Summer
opening feature” (Y page 107). The climate
control will then adjust the interior
temperature to the set value much faster.
Deactivating the climate control
systemGWarning!
When the climate control system is
deactivated, the outside air supply and
circulation are also deactivated. Only choose
this setting for a short time. Otherwise the
windows could fog up, impairing visibility and
endangering you and others.
XDeactivating: Press button ^.
The indicator lamp above the button comes
on.XReactivating: Press button ^.
The indicator lamp above the button goes
out. The previous settings are once again
in effect.
or
XPress button Ã.
The indicator lamp above the button comes
on. Air volume and air distribution are
adjusted automatically.
Air conditioning
The air conditioning is operational while the
engine is running and cools the interior air to
the temperature set by the operator. In
addition, the air conditioning dehumidifies
the interior air and helps prevent window
fogging.
GWarning!
If you deactivate the air conditioning, the
vehicle will not be cooled when weather
conditions are warm. The windows can fog up
more quickly. Window fogging may impair
visibility and endanger you and others.
i Condensated water may drip out from
underneath the vehicle. This is normal and
not an indication of a malfunction.
Climate control system185Controls in detail212_AKB; 2; 41, en-USd2ureepe,Version: 2.11.8.12009-07-17T09:14:21+02:00 - Seite 185Z
iKeep this setting selected only until the
windshield or the front door windows are
clear again.XActivating: Press button ¬.
The indicator lamp above the button comes
on.
The climate control switches to the following
functions automatically:
R cooling on to dehumidify
R most efficient blower speed and heating
power, depending on outside temperature
R air flows onto the windshield and the front
door windows
R the air recirculation mode is switched off
i You can adjust the air volume when the
front defroster is switched on.
XDeactivating: Press button ¬.
The indicator lamp above the button goes
out. The previous settings are once again
in effect. The cooling remains switched on.
The air recirculation remains switched off.
or
XPress button Ã.
The indicator lamp above button ¬ goes
out. Air volume and air distribution are
adjusted automatically.
or
XDual-zone automatic climate control:
Press rocker switch E or H
( Y page 181) up or down.
3-zone automatic climate control: Press
rocker switch F or J (Y page 183) up or
down.
Maximum cooling MAX COOL
MAX COOL is only available in U.S. vehicles.
MAX COOL is only operational when the
engine is running.
You can use this setting to provide the fastest
possible cooling of the vehicle interior (when
windows and tilt/sliding sunroof or tilt/
sliding panel are closed).XActivating: Press button Ù.
The indicator lamp above the button comes
on.
The climate control switches automatically to
the following functions:
R maximum cooling
R maximum blowing power
R the air recirculation mode is switched on
XDeactivating: Press button Ù again.
The indicator lamp above the button goes
out. The previous settings are once again
in effect.
Air recirculation mode
Switch to air recirculation mode to prevent
unpleasant odors from entering the vehicle
from the outside (e. g. before driving through
a tunnel). This setting cuts off the intake of
outside air and recirculates the air in the
passenger compartment.
GWarning!
Fogged windows impair visibility,
endangering you and others. If the windows
begin to fog on the inside, switching off the
air recirculation mode immediately should
clear interior window fogging. If interior
window fogging persists, make sure the air
conditioning is activated, or press button
¬ .
XActivating: Press button g.
The indicator lamp above the button comes
on.
i The air recirculation mode is activated
automatically at high outside
temperatures.
The indicator lamp in button g is not lit
when the air recirculation mode is switched
on automatically.
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some time of operation depending on the
outside temperature.XSwitch on the ignition.XSwitching on: Press button ¤.
The indicator lamp above the button comes
on.XSwitching off: Press button ¤ again.
The rear window defroster switches off when
the battery voltage is too low. Too many
electrical consumers may be operating
simultaneously.
XSwitch off consumers that are currently not
needed if required.
Power tilt/sliding sunroof
Opening and closing
GObserve Safety notes, see page 56.GWarning!
When opening or closing the tilt/sliding
sunroof, make sure there is no danger of
anyone being harmed by the opening/closing
procedure.
The tilt/sliding sunroof is equipped with the
express operation and automatic reversal
function. If the movement of the tilt/sliding
sunroof is blocked during the closing
procedure, the tilt/sliding sunroof will stop
and open slightly.
The tilt/sliding sunroof operates differently
when the sunroof switch is pressed and held.
See the “Closing when the tilt/sliding sunroof
is blocked” section for details.
The opening/closing procedure of the tilt/
sliding sunroof can be immediately halted by
releasing the sunroof switch or, if the sunroof
switch was moved past the resistance point
and released, by moving the sunroof switch in
any direction.
GWarning!
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 properly as
entire body parts or portions of them may
protrude from the passenger compartment.
! To avoid damaging the seals, do not
transport 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.
If you cannot open or close the tilt/sliding
sunroof due to a malfunction contact
Roadside Assistance or an authorized
Mercedes-Benz Center.
! 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.
i You can also open or close the tilt/sliding
sunroof using the SmartKey or the
KEYLESS-GO function, see “Summer
opening feature” ( Y page 107) and
“Convenience closing feature”
( Y page 108).
i After switching off the ignition or
removing the SmartKey from the starter
switch, you can operate the tilt/sliding
sunroof until you open the driver’s or front
passenger door. If no door was opened you
can operate the tilt/sliding sunroof for up
to 5 minutes.192Power tilt/sliding sunroofControls in detail
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