
PRE-SAFE
®
(preventative occupant
protection) G
WARNING
The PRE-SAFE ®
system reduces the impact of
an accident on vehicle occupants, as long as
their seat belts have been fastened correctly.
Although your vehicle is equipped with a PRE-
SAFE ®
system, the possibility of injury in the
event of an accident cannot be ruled out. You
should therefore always drive carefully and
adapt your driving style to the prevailing road,
weather and traffic conditions.
PRE-SAFE ®
takes preemptive measures to
protect occupants in certain hazardous
situations.
PRE-SAFE ®
intervenes:
R if BAS PLUS intervenes powerfully on
vehicles with DISTRONIC PLUS
R if, on vehicles with DISTRONIC PLUS, the
radar sensor system detectsani mminent
dange rofcollision in certain situations
R in critical driving situations, e.g. when
physical limits are exceeded and the
vehicle understeers or oversteers severely
PRE-SAFE ®
takes the following measures
depending on the hazardous situation
detected:
R the front seat belts are pre-tensioned.
R the front-passenger seat or the electrically
adjustable outer seats in the rear are
adjusted if they are in an unfavorable
position.
R vehicles with a multicontour seat or active
multicontour seat: the air pressure in the
side bolsters of the seat cushion and
backrest is increased.
R vehicles with multicontour seats in the
rear: the air pressure in the backrest side
bolsters of the outer seats in the rear is
increased.
R if the vehicle skids, the sliding sunroof/
panorama roof with power tilt/sliding panel and the side windows are closed so
that only a small gap remains.
If the hazardous situation passes without
resulting in an accident, PRE-SAFE ®
slackens
the belt pretensioning. The air pressure in the
side bolsters on the multicontour seat/active
multicontour seat is reduced again. All
settings made by PRE-SAFE ®
can then be
reversed.
If the seat belts are not released:
X Move the backrest back slightly, but only
when the vehicle is stationary.
The belt pretensioning is reduced and the
locking mechanism is released. G
WARNING
Make sure that nobody can become trapped
as you adjust the seat.
! Make sure that there are no objects in the
footwell or behind the seats when resetting
the seats. There is a risk that the seats
and/or the objects could be damaged.
More information about seat-belt
adjustment, a convenience function
integrated into PRE-SAFE ®
, can be found in
the "Seat-belt adjustment" section
(Y page 64). NECK-PRO head restraints/NECK-
PRO luxury head restraints
NECK-PRO head restraints/NECK-PRO luxury
head restraints increase protection of the
driver's and front-passenger's head and
neck. In the event of a rear collision of a
certain severity, the NECK-PRO head
restraints/NECK-PRO luxury head restraints
on the driver's and front-passenger seats are
moved forwards and upwards. This provides
better head support. G
WARNING
Do not attach any objects (e.g. a coat hanger)
to the NECK-PRO head restraints/NECK-PRO
luxury head restraints. Otherwise, the NECK- Occupant safety
59Safety
Z

PRO head restraints/NECK-PRO luxury head
restraints may not function properly and in
the event of a rear-end collision may not offer
the protection they are designed to provide.
G
WARNING
Seat or head restraint covers can cause a
malfunction when the NECK-PRO head
restraints/NECK PRO luxury head restraints
are activated or when the side impact air bags
are deployed, or they can prevent this
completely. The NECK-PRO head restraints/
NECK PRO luxury head restraints or side
impact air bags can therefore not provide the
intended protection. Do not use any seat or
head restraint covers.
If the NECK-PRO head restraints/NECK-PRO
luxury head restraints have been triggered in
an accident, reset the NECK-PRO head
restraints/NECK-PRO luxury head restraints
on the driver's and front-passenger seats
(Y page 60). Otherwise, the additional
protection will not be available in the event of
another rear-end collision. NECK-PRO head
restraints/NECK-PRO luxury head restraints
that have been triggered are moved forwards
and can no longer be adjusted. G
WARNING
For your protection, drive only with properly
positioned head restraints.
Adjust the head restraint so that it is as close
to the head as possible and the center of the
head restraint supports the back of the head
at eye level. This will reduce the potential for
injury to the head and neck in the event of an
accident or similar situation. Resetting triggered NECK-PRO head
restraints
Important safety notes G
WARNING
For reasons of safety, have the NECK-PRO
head restraints/NECK-PRO luxury head restraints checked at an authorized
Mercedes-Benz Center after a rear-end
collision.
G
WARNING
When pushing back the NECK-PRO head
restraint cushion, make sure your fingers do
not become caught between the head
restraint cushion and the cover. Failure to
observe this could result in injuries.
NECK-PRO head restraints i
Resetting the NECK-PRO head restraints
requires a lot of strength. If you have
difficulty resetting the NECK-PRO head
restraints, have this work carried out at a
qualified specialist workshop, e.g. an
authorized Mercedes-Benz Center. X
Press the base of the NECK-PRO head
restraint cushion back in the direction of
arrow 0003as far as it will go.
X Push the NECK-PRO head restraint cushion
down into the guide in the direction of
arrow 0026as far as it will go.
X Firmly fold the NECK-PRO head restraint
cushion back in the direction of arrow 0002
until it engages.
X Repeat this procedure for the second
NECK-PRO head restraint.
NECK-PRO luxury head restraints i
If you have difficulty resetting the NECK-
PRO luxury head restraints, have this work
carried out at a qualified specialist 60
Occupant safetySafety

workshop, e.g
.anauthorized Mercedes-
Benz Center. X
Remove resetting tool 0002from the vehicle
tool kit in the trunk.
X Slide resetting tool 0002into guide 0003
between the NECK-PRO luxury head
restraint and the rear cover of the head
restraint.
X Push resetting tool 0002downwards until you
hear the head restraint deployment
mechanism engage.
X Pull out resetting tool 0002.
X Firmly press the NECK-PRO luxury head
restraint cushion back 0026until it engages.
X Repeat this procedure for the second
NECK-PRO luxury head restraint.
X Put resetting tool 0002back into the vehicle
tool kit. Sea
tbelts
Important safety notes The use of seat belts and infant and child
restraint systems is required by law in all 50
states, the District of Columbia, the U.S.
territories and all Canadian provinces.
Even where this is no tthe case, all vehicle
occupants should have their seat belts
fastened when the vehicle is in motion.
i For further information on infants and
children traveling in the vehicle and on
infant and child restraint systems, see
"Children in the vehicle" (Y page 66). G
WARNING
Always fasten your seat belt before driving off.
Always make sure all of your passengers are
properly restrained. You and your passengers
should always wear seat belts.
Failure to wear and properly fasten and
position your seat belt greatly increases your
risk of injuries and their likely severity in an
accident.
If you are ever in an accident, your injuries can
be considerably more severe without your
seat belt properly buckled. Without your seat
belt buckled, you are much more likely to hit
the interior of the vehicle or be ejected from
it. You can be seriously injured or killed.
In the same crash, the possibility of injury or
death is lessened if you are properly wearing
your seat belt. The air bags can only protect
as intended if the occupants are properly
wearing their seat belts. G
WARNING
Never ride in a moving vehicle with the seat
backrest in an excessively reclined position as
this can be dangerous. You could slide under
the seat belt in a collision. If you slide under
it, the seat belt would apply force at the
abdomen or neck.T hat could cause serious
or even fatal injuries. The seat backrest and
seat belt provide the best restraint when the
wearer is in a position that is as upright as
possible and the seat belt is properly
positioned on the body. G
WARNING
Never let more people ride in the vehicle than
there are seat belts available. Make sure
everyone riding in the vehicle is correctly
restrained with a separate seat belt. Never
use a seat belt for more than one person at a
time. G
WARNING
Damaged seat belts or seat belts that have
been subjected to stress in an accident must Occupant safety
61Safety
Z

X
Make sure that all the side windows and the
sliding sunroof or panorama roof with
power tilt/sliding panel are closed.
X To interrupt convenience closing:
release recessed sensor surface 0002on the
door handle.
On vehicles with roller sunblinds:
X Touch the recessed sensor surface on the
door handle again until the roller sunblinds
close.
X To interrupt the roller sunblind closing
procedure: pull the exterior door handle
and hold it firmly. Resetting the side windows
You must reset each side window if:
R a side window cannot be closed
automatically
R a side window opens again slightly after
being closed manually
X Close all the doors.
X Turn the SmartKey to position 1or 2in the
ignition lock.
X Pull the corresponding switch on the door
control panel until the side window is
completely closed. (Y page 96)
X Hold the switch for an additional second.
If the side window opens again slightly:
X Immediately pull the corresponding switch
on the door control panel until the side
window is completely closed (Y page 96).
X Hold the switch for an additional second.
X If the corresponding side window remains
closed after the button has been released,
the side window has been reset correctly.
If this is not the case, repeat the steps
above again. Problems with the side windows
Problem: aside window cannot be closed
because it is blocked by objects, e.g.
leaves in the window guide.
X Remove the objects.
X Close the side window.
Problem :aside window cannot be closed
and you cannot see the cause. G
WARNING
Closing the side windows with increased force
or without the anti-entrapment feature could
lead to serious or even fatal injury. Make sure
that nobody can become trapped when
closing the side windows.
If a side window is obstructed during closing
and reopens again slightly:
X Immediately afte rthe window blocks, pull
the corresponding switch again until the
side window has closed.
The side window is closed with increased
force.
If a side window is obstructed again during
closing and reopens again slightly:
X Immediately after the window blocks, pull
the corresponding switch again until the
side window has closed.
The side window is closed without the anti-
entrapment feature. G
WARNING
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 the anti-entrapment feature
for as long as you hold the switch. Sliding sunroof
Important safety notes
Your vehicle may be equipped with a sliding
sunroof or a panorama roof with power tilt/
sliding panel. In the following section, the 98
Sliding sunroofOpening/closing

The automatic raising feature is available
only when the sliding sunroof is closed.
The automatic opening feature is available
only when the sliding sunroof is not raised.
The sun protection cover automatically opens
along with the sliding sunroof. You can open
or close the sun protection cover manually
when the sliding sunroof is raised or closed.
Resetting Reset the sliding sunroof if it does not move
smoothly.
X
Turn the SmartKey to position 2in the
ignition lock.
X Raise the sliding sunroof fully at the rear
(Y page 99).
X Keep the 0003switch pressed for another
second.
X Make sure that the sliding sunroof can be
fully opened and closed again (Y page 99).
X If this is not the case, repeat the steps
above again.
! If the sliding sunroof still cannot be
opened or closed fully after resetting,
contact a qualified specialist workshop. Operating the panorama roof with
power tilt/sliding panel
Opening and closing Overhead control panel
0002
To raise
0003 To open
0026 To close/lower
The panorama roof with power tilt/sliding
panel can only be operated when the roller
sunblind is open.
i If the frontr oller sunblind is closed, it
opens first when the panorama roof with
power tilt/sliding panel is raised.
X Turn the SmartKey to position 1or 2in the
ignition lock.
X Push or pull the 0003switch in the
corresponding direction.
i If you press the 0003switch beyond the
point of resistance, an automatic opening/
closing process is started in the
corresponding direction .You can stop
automatic operation by operating the
switch again. Operating the roller sunblinds for the
panorama roof with power tilt/sliding
panel
General notes The roller sunblinds shield the vehicle interior
from sunlight. The front roller sunblind can
only be opened and closed when the100
Sliding sunroofOpening/closing

being injured by the opening or closing
procedure.
The rear roller sunblind is equipped with
automatic operation and the anti-entrapment
feature. If the movement of the rear roller
sunblind is blocked during the closing
procedure, the rear roller sunblind will stop
and retract slightly.
The opening or closing of the rear roller
sunblind can be immediately halted by
releasing the sunblind switch or, if the
sunblind switch was moved past the
resistance point and released, by pressing or
pulling the sunblind switch again.
Door control panel in rear
X
To open/close manually: press or pull
switch 0002to the point of resistance and
hold it until the rear roller sunblind has
reached the desired position.
X To open/close fully: press or pull
switch 0002beyond the point of resistance
and release it.
i You can stop automatic operation by
operating the switch again.
Resetting the panorama roof with
power tilt/sliding panel or the front
roller sunblind Reset the panorama roof with power tilt/
sliding panel or the fron
troller sunblind if the
panorama roof with power tilt/sliding panel
or the roller sunblinds do not move smoothly.
! Do not open the panorama roof with
power tilt/sliding panel until it has been reset correctly. The panorama roof with
power tilt/sliding panel can otherwise be
locked in the open position.
X Turn the SmartKey to position 1or 2in the
ignition lock.
X Pull the 0003switch repeatedly to the point
of resistance in the direction of arrow
0026(Y page 100) until the panorama roof
with power tilt/sliding panel is fully closed.
X Keep the 0003switch pulled for an
additional second.
X Pull the 0003switch in the direction of
arrow 0026(Ypage 101) repeatedly until the
front roller sunblind is closed.
X Keep the 0003switch pulled for an
additional second.
X Make sure that the panorama roof with
power tilt/sliding panel (Y page 100) and
the front roller sunblind (Y page 101) can
be fully opened again.
X If this is not the case, repeat the steps
above again.
Resetting the rear sunblind Door control panel in rear
X
Turn the SmartKey to position 1or 2in the
ignition lock.
X Pull switch 0002repeatedly until the rear
roller sunblind is fully closed.
X Keep switch 0002pulled for an additional
second. 102
Sliding sunroofOpening/closing

Do not drive the vehicle withou
tthe seat head
restraints. Head restraints are intended to
help reduce injuries during an accident.
! To avoid damage to the seats and the seat
heating, observe the following information:
R keep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats.
R clean the seat covers as recommended;
see the "Interior care" section.
R do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools.
The seats should only be occupied by
passengers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating
materials, e.g. blankets, coats, bags,
seat covers, child seats or booster seats.
! Make sure that there are no objects in the
footwell or behind the seats when resetting
the seats. There is a risk that the seats
and/or the objects could be damaged.
i The head restraints in the front seats are
equipped with the NECK-PRO system. For
this reason, it is not possible to remove the
head restraints from the front seats.
For design reasons, the rear-compartment
head restraints cannot be removed.
For more information, contact a qualified
specialist workshop. Adjusting the seats
0002
Head restraint height
0003 Seat height
0026 Seat cushion angle
0025 Seat cushion length
0023 Seat fore-and-aft adjustment
0024 Backrest angle
i If PRE-SAFE ®
has been activated, the
front-passenger seat and the electrically
adjustable rear seats are moved into a
more favorable position.
i You can store the seat settings using the
memory function (Y page 118).
i To ensure the largest possible range of
seat settings, certain seat adjustment
functions will automatically activate other
seat adjustment functions.
i Depending on the seat fore-and-aft
setting, the head restraint height is
adjusted automatically. Adjusting the rear seat electrically
You can only adjust the outer seats in the rear
electrically. 108
SeatsSeats, steering wheel and mirrors

You can use the override button to disable
this function (Y
page 71).
The button is located in the rear door on the
front-passenge rside. 0002
To selec tthe front-passenger seat or rear-
compartment seat
0003 Seat height
0026 Head restraint height
0025 Backrest angle
0023 Seat fore-and-aft adjustment
X To selectt he front-passenge rseat:
press button 0002.
The front-passenger seat is selected if the
indicator lamp in the button lights up.
X Adjust the front-passenger seat with
buttons 0003,0026,0025and 0023.
X To select the rear-compartment seat:
press button 0002.
The rear-compartment seat is selected
again. Adjusting the head restraints
Adjusting the head restraint height
electrically X
To adjust th ehead restraint height: slide
the switch for head restrain tadjustment
(Y page 108 )up or down in the direction of
the arrow. Adjusting the NECK-PRO head
restraints Adjusting
X
Pull or push the bottom of NECK-PRO head
restraint 0002.
Resetting
The NECK-PRO head restraints are moved
forwards in the event of a rear collision in the
direction of travel and have to be reset
afterwards (Y page 60).
Adjusting NECK-PRO luxury head
restraints Adjusting
G
WARNING
When folding back the side cushions, do not
hold the area between the side cushion and
the cushion holder. There is a danger of
becoming trapped. You can adjust side bolsters
0002of the NECK-
PRO luxury head restraints individually. 110
SeatsSeats, steering wheel and mirrors