Page 39 of 506

38 Getting startedAdjustingSeat adjustment
The seat adjustment switches are located
in each door.
1Head restraint height
2Seat height
3Seat cushion tilt
4Seat fore and aft adjustment
5Backrest tilt
Switch on the ignition (
page 34).
or
Open the respective door.Seat fore and aft adjustment
Press switch forward or backward in
direction of arrow4.
Adjust seat to a comfortable seating
position that still allows you to reach
the accelerator / brake pedal safely.
The position should be as far to the rear
as possible, consistent with ability to
properly operate controls.Seat height
Press switch up or down in direction of
arrow2.
Seat cushion tilt
Press switch up or down in direction of
arrow3 until your upper legs are
lightly supported.
Seat backrest tilt
Press switch forward or backward in
direction of arrow5 until your arms
are slightly angled when holding the
steering wheel.
Head restraint height
Press switch up or down in direction of
arrow1.
!When moving the seat, be sure that
there are no items in the footwell or be-
hind the seats. Otherwise you could
damage the seats.iThe memory function (
page 119) lets
you store the setting for the seat posi-
tion together with the setting for the
steering wheel and the exterior rear
view mirrors.
iAdjust the head restraint in such a way
that it is as close to the head as
possible.
Page 75 of 506

74 Safety and SecurityOccupant safety
If you must install a rear-facing child
restraint on the front passenger seat be-
cause circumstances require you to do
so, make sure that the 56 indi-
cator lamp is illuminated, indicating that
the front passenger front air bag is deac-
tivated. Should the 56 indicator
lamp not illuminate or go out while the
restraint is installed, please check in-
stallation. Periodically check the
56 indicator lamp while driving
to make sure the 56 indicator
lamp is illuminated. If the 56
indicator lamp goes out or remains out,
do not transport a child on the front pas-
senger seat until the system has been
repaired. A child in a rear-facing child re-
straint on the front passenger seat will
be seriously injured or even killed if the
front passenger front air bag inflates.
If you have to place a child in a
forward-facing child restraint on the
front passenger seat, move the seat as
far back as possible, use the proper
child restraint recommended for the
age, size and weight of the child, and se-
cure child restraint with the vehicle's
seat belt according to the child seat
manufacturer's instructions. For
children larger than the typical
12-month-old child, the front passenger
front air bag may or may not be
activated (
page 76).
Warning!
G
Infants and small children should never
share a seat belt with another occupant.
During an accident, they could be crushed
between the occupant and seat belt.
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle
and/or the child is not properly secured in
the child restraint.
Children too big for a toddler restraint must
ride in seats using regular seat belts. Posi-
tion shoulder belt across chest and shoul-
der, not face or neck. A booster seat may be
necessary to achieve proper belt positioning
for children from 41 lbs until they reach a
height where a lap/shoulder belt fits
properly without a booster.
Page 82 of 506

81 Safety and Security
Occupant safety
To fold anchors out
1Indicates the position of the anchors
2Anchors
3Release button
Grip inner side of anchors2 and fold
forward until they audibly lock in place.
Install child seat according to the
manufacturer’s instructions.To fold anchors back
Press down button3 on each
anchor2 and return the anchor2 to
its catch.
iThe child seat must be firmly attached
in the right and left side anchors2.
iNon-LATCH type child seats may also
be used and can be installed using the
vehicle’s seat belt system. Install child
seat according to the manufacturer’s
instructions.Warning!
G
Children too big for a toddler restraint must
ride in seats using regular seat belts. Posi-
tion shoulder belt across chest and shoul-
der, not face or neck.
A booster seat may be necessary to achieve
proper belt positioning for children from
41 lbs until they reach a height where a
lap/shoulder belt fits properly without a
booster.
Before installing the child seat, make sure
anchors2 are folded out and locked in
place.
Install child seat according to manufactur-
er’s instructions.
T h e c h i l d s e a t m u s t b e f i r m l y a t t a c h e d i n t h e
right and left side anchor2.
An incorrectly mounted child seat may come
loose during an accident which could result
in serious injury or death to the child.
Damaged or impact damaged child seats or
child seat anchor fittings must be replaced.
Do not leave children unattended in the
vehicle, even if the children are secured in a
child restraint system.
Page 99 of 506

98 Controls in detailLocking and unlockingUnlocking and opening the trunk lid
You can unlock and open the trunk lid
separately.
A minimum height clearance of 5.41 ft
(1.65 m) is required to open the trunk lid.
Press and hold button Š until the
trunk lid unlocks and begins to open.
The trunk lid can also be opened from its
inside in an emergency, see “Trunk lid
emergency release” (
page 109).Loss of SmartKey or mechanical key
If you lose a SmartKey or mechanical key,
you should do the following:
Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.
Report the loss of the SmartKey or the
mechanical key immediately to your
car insurance company.
If necessary, have the mechanical lock
replaced.
Your authorized Mercedes-Benz Center
will be glad to supply you with a replace-
ment.
SmartKey with KEYLESS-GO*
Vehicles equipped with KEYLESS-GO come
with two SmartKeys with KEYLESS-GO,
each with remote control and a removable
mechanical key. The locking tabs for the
mechanical key portion of the two
SmartKeys are a different color to help
distinguish each SmartKey unit.
The KEYLESS-GO function is integrated
into the SmartKey. On these vehicles, the
validity of the SmartKey with KEYLESS-GO
is checked every time you pull a door
handle.
If the SmartKey with KEYLESS-GO is valid,
your vehicle unlocks
the doors
the glove box
the trunk lid
the fuel filler flap
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.iIf the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 107). The
turn signals will flash three times to
confirm locking.
Page 105 of 506
104 Controls in detailLocking and unlockingGlobal locking using the lock button at
trunk lid
1Lock button at trunk lid
Press the lock button 1 at trunk lid.With the hood, trunk and both doors
closed, all turn signal lamps flash three
times. The locking knobs in the doors
move down. The anti-theft alarm sys-
tem is armed.
Unlocking and opening the trunk lid
A minimum height clearance of 5.41 ft
(1.65 m) is required to open the trunk lid.
The handle is located in the rear license
plate recess.1Handle
Pull on handle1.
The trunk opens.
or
Press and hold button Š until the
trunk unlocks and begins to open.
iTo prevent a possible inadvertent
lockout, the trunk lid will open
automatically if a SmartKey with
KEYLESS-GO* is recognized inside the
vehicle or in the trunk.
iYou can also lock the vehicle using the
lock button at outside door handle
(page 58).
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Page 107 of 506
106 Controls in detailLocking and unlocking
Opening the trunk
Opening the trunk from outside
(vehicles without KEYLESS-GO*)
A minimum height clearance of 5.41 ft
(1.65 m) is required to open the trunk lid.
The handle is located in the rear license
plate recess.
1Handle
Pull on handle1.
The trunk lid unlocks and begins to
open.
The trunk can also be opened using
buttonŠ on the SmartKey or from its
inside in an emergency, see “Trunk lid
emergency release” (
page 109).
iIf you open a door, the side windows on
that side of the vehicle will lower slight-
ly. The windows close again when you
close the door.
iThe vehicle must be unlocked.!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.
Page 108 of 506

107 Controls in detail
Locking and unlocking
Opening the trunk from the inside
You can open the trunk from the inside if
the vehicle is stationary.
A minimum height clearance of 5.41 ft
(1.65 m) is required to open the trunk lid.
The remote trunk lid switch is located on
the driver’s door.
1Remote trunk lid switch with indicator
lamp
Press remote trunk lid switch1 until
the trunk begins to open.
The indicator lamp in the switch
remains lit as long as the trunk is open.
The trunk can also be opened using
buttonŠ on the SmartKey or from its
inside in an emergency, see “Trunk lid
emergency release” (
page 109).
Closing the trunk
Depending on production date, your
vehicle is equipped with either trunk
design A or B.Trunk design A1Handle
Lower trunk lid by pulling firmly on
handle1.
Close trunk lid with hands placed flat
on the trunk lid.
!The trunk lid swings open upwards au-
tomatically. Always make sure there is
sufficient overhead clearance.iIf the vehicle was previously centrally
locked, the trunk lid will lock automati-
cally when closed (
page 107). The
turn signals will flash three times to
confirm locking.
Page 117 of 506
116 Controls in detailSeatsMulticontour seat*
The multicontour seat has a movable seat
cushion and inflatable air cushions built
into the backrest to provide additional
lumbar and side support.
The seat cushion movement, backrest
cushion height and curvature can be
continuously varied with switches on the
side of the seat after starting the engine.
1Seat cushion depth
2Backrest bottom
3Backrest center
4Side bolster adjustment
Start the engine.Seat cushion depth
Adjust the seat cushion depth to the
length of your upper leg using
switch1.
Backrest contour
Adjust the contour of the backrest to
the desired position using switches2
and3.
Backrest side bolsters
Adjust the backrest side bolsters so
that they provide good lateral support
using switch4.