Page 65 of 506

63 Safety and Security
Occupant safety
Warning!
G
Accident research shows that the safest
place for children in an automobile is in the
rear seat.
It should be noted that with respect to both
front and rear side impact air bags there is a
possibility for a side impact air bag related
injury if occupants, especially children, are
not properly seated or restrained when next
to a side impact air bag which needs to de-
ploy rapidly in a side impact in order to do its
job.
To help avoid the possibility of injury, please
follow these guidelines:
(1) Occupants, especially children, should
never place their bodies or lean their
heads in the area of the door where the
side impact air bag inflates. This could
result in serious injuries or death should
the side impact air bag be deployed.
(2) Always sit nearly upright, properly use
the seat belts and for children 12 years
old and under, use an appropriately
sized infant or toddler restraint or boost-
er seat recommended for the size and
weight of the child.
(3) Always wear seat belts properly.
If you believe that, even with the use of
these guidelines, it would be safer for your
rear seat occupants to have the rear mount-
ed side impact air bags deactivated, then
deactivation can be accomplished upon
your written request to do so at your autho-
rized Mercedes-Benz Center at an additional
cost.
Please contact your local authorized
Mercedes-Benz Center or call our Customer
Assistance Center at 1-800-FOR-MERCedes
(1-800-367-6372) for details.
iAir bags are designed to deploy only in
certain frontal impacts (front air bags),
side impacts (side impact and head
protection window curtain air bags)
which exceed preset thresholds and in
certain rollovers (head protection win-
dow curtain air bags). Only during
these events will they provide their
supplemental protection.
The driver and passengers should al-
ways wear their seat belts. Otherwise it
is not possible for air bags to provide
their supplemental protection.
Page 82 of 506

80 Safety and SecurityOccupant safetyInstallation of infant and child restraint
systems
This vehicle is equipped with tether an-
chorages for a top tether strap at each of
the rear seating positions.
Not foldable rear seat backrest
1Cover
Remove cover1 from anchorage ring.
Guide tether strap between head re-
straint and top of the seat back.
Head restraint must be installed (if re-
movable) and positioned such that the
top tether strap can pass freely be-
tween the head restraint and the top of
the seat back.
Make sure the tether strap is not twist-
ed.
2Hook
3Anchorage ring
Securely fasten the hook2 to the an-
chorage ring3.Once the top tether anchorage hook is at-
tached, the child restraint itself can be se-
cured. Tighten the top tether strap
according to the child restraint manufac-
turer's instructions.
Foldable rear seat backrest*
Fold rear seat backrest slightly for-
ward.
Remove cover from anchorage ring.
Guide tether strap between head re-
straint and top of the seat back.
Head restraint must be positioned such
that the top tether strap can pass freely
between the head restraint and the top
of the seat back.
Make sure the tether strap is not twist-
ed.iFor safety, make sure the hook2 has
attached to the ring3 beyond the
safety catch, as illustrated.
Page 110 of 506

108 Controls in detailLocking and unlockingUnlocking and opening the trunk lid
You can unlock and open the trunk lid sep-
arately.
A minimum height clearance of 5.90 ft
(1.80 m) is required to open the trunk lid.
The handle is located in the rear license
plate recess.
Pull on the handle
or
Press and hold buttonŠ until the
trunk lid unlocks and opens.Loss of the SmartKey with KEYLESS-GO
If you lose your SmartKey with
KEYLESS-GO, you should do the following:
Have the SmartKey with KEYLESS-GO
deactivated by an authorized
Mercedes-Benz Center.
Report the loss immediately to your car
insurance company.
Have the mechanical lock replaced if
necessary.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Vehicles with trunk lid opening/closing
system*: to stop the opening proce-
dure, press buttonŠ on the
SmartKey with KEYLESS-GO. The trunk
lid stops moving.iIf the vehicle was previously centrally
locked with KEYLESS-GO, the trunk will
lock automatically after closing it. The
turn signals flash three times to con-
firm locking.
Page 112 of 506

110 Controls in detailLocking and unlockingOpening the trunk
Opening the trunk from the outside
A minimum height clearance of 5.90 ft
(1.80 m) is required to open the trunk lid.
The handle is located above the rear li-
cense plate recess.
In vehicles without KEYLESS-GO*: The ve-
hicle must be unlocked.
Pull on the handle.
The trunk lid opens.Opening the trunk from the inside
You can open the trunk from the inside if
the vehicle is stationary.
A minimum height clearance of 5.90 ft
(1.80 m) is required to open the trunk lid.
The switch is located on the driver’s door.
1Remote trunk lid switch with indicator
lamp
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.iThe trunk can also be opened using the
buttonŠ on the SmartKey or
SmartKey with KEYLESS-GO* or from
its inside in an emergency, see “Trunk
lid emergency release” (
page 117).
iIf the vehicle was previously centrally
locked, the trunk will lock automatical-
ly after closing it. The turn signals flash
three times to confirm locking.
Page 125 of 506

123 Controls in detailSeats
Removing and installing front seat head restraints
For more information on head restraint ad-
justment, see the “Getting started” section
(page 39).
Front seat head restraints
Removing front head restraints
Press switch1upwards and hold until
the head restraint is fully extended.
Pull out head restraint.Installing front head restraints:
Press switch1upwards and hold for
about five seconds.
Push the head restraint down until it
engages.
Adjust head restraint to desired posi-
tion (
page 39).
Warning!
G
For your protection, drive only with properly
positioned head restraints.
Adjust head restraint so that the center of
the head restraint supports the back of the
head at eye level. This will reduce the poten-
tial for injury to the head and neck in the
event of an accident or similar situation.
Do not drive the vehicle without the seat
head restraints. Head restraints are intend-
ed to help reduce injuries during an acci-
dent.
iTilt the backrest to the rear for easier
removal and installation of the head re-
straints.
Page 126 of 506
124 Controls in detailSeatsRear seat head restraints
Folding head restraints back with
switch in the center console
The rear seat head restraints can be folded
backward for increased visibility.
1Head restraint release switch
Switch on the ignition (
page 33).
Press the symbol-side on rocker
switch1to release the head re-
straints.
The head restraints will fold backward.Placing head restraints upright
Pull the head restraint forward until it
locks into position.
!The rear seat head restraints cannot be
adjusted.
Warning!
G
For safety reasons, always drive with the
rear head restraints in the upright position
when the rear seats are occupied.
Keep the area around head restraints clear
of articles (e.g. clothing) to not obstruct the
folding operation of the head restraints.
!Make sure the head restraints engage
when placing them upright. Otherwise
their protective function cannot be as-
sured.
Page 127 of 506

125 Controls in detailSeats
Removing and installing rear seat head
restraints
1Release catch
Removing rear seat head restraints
Fold the backrest forward
(page 257).
Fold back head restraint (
page 124).
Press head restraint release catch1
and pull the head restraints out of the
guides.
Fold the backrest back to its original
position.Installing rear seat head restraints
Warning!
G
For your protection, drive only with properly
positioned head restraints.
Adjust head restraint so that the head re-
straint 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 ac-
cident or similar situation.
Do not drive the vehicle without the seat
head restraints. Head restraints are intend-
ed to help reduce injuries during an acci-
dent.
Do not interchange head restraints from
front and rear seat.
iWhen installing the head restraints,
make sure that:
you place the correct head restraint
on the middle seat. It is marked
with the letter “M” on the outside of
the metal bars.
the head restraints engage fully.
Page 132 of 506

130 Controls in detailMemory function
You can store up to three different settings
for each SmartKey or SmartKey with
KEYLESS-GO*.
The following settings are stored when us-
ing the buttons on the driver’s door:
Driver’s seat, backrest, head restraint
position and settings for multicontour
seat
Steering wheel position
Exterior rear view mirror positions
These SmartKey-dependent memory set-
tings can be deactivated if desired. For in-
formation on SmartKey-dependent
memory settings, see “Setting
SmartKey-dependency” (
page 168).
The following settings are not
SmartKey-dependent. They are stored
when using the buttons on the front pas-
senger door:
Front passenger seat, backrest, head
restraint position and settings for mul-
ticontour seat
!Prior to operating the vehicle, the driv-
er should check and adjust the seat
height, seat position fore and aft, and
seat backrest angle if necessary, to
ensure adequate control, reach and
comfort. The head restraint should also
be adjusted for proper height. See also
the section on air bags (
page 61) for
more information on proper seat posi-
tioning.
In addition, adjust the steering wheel to
ensure adequate control, reach, opera-
tion and comfort. Both the interior and
exterior rear view mirrors should be ad-
justed for adequate rear vision.
Fasten seat belts. Infants and small
children should be seated in a properly
secured restraint system that complies
with U.S. Federal Motor Vehicle Safety
Standards 213 and 225 and Canadian
Motor Vehicle Safety Standards 213
and 210.2.
Warning!
G
Do not activate the memory function while
driving. Activating the memory function
while driving could cause the driver to lose
control of the vehicle.