ContentsSafety and Security........................... 65
Occupant safety................................... 66
Air bags .......................................... 67
Seat belts ....................................... 72
Active head restraints .................... 76
Children in the vehicle .................... 77
Blocking of rear door
window operation ........................... 89
Panic alarm .......................................... 90
Activating ....................................... 90
Deactivating ................................... 90
Driving safety systems ......................... 91
ABS ................................................ 91
BAS ................................................ 93
ESP
®.............................................. 93
Electrohydraulic brake system ....... 96
Four wheel electronic traction
system (4MATIC) with the ESP
®..... 99
Anti-theft systems.............................. 101
Immobilizer................................... 101
Anti-theft alarm system ................ 101
Tow-away alarm ........................... 103
Controls in detail............................. 105
Locking and unlocking ....................... 106
SmartKey ..................................... 106
SmartKey with KEYLESS-GO* ...... 111
Opening the doors
from the inside ............................. 119
Opening the tailgate ..................... 120
Closing the tailgate ...................... 122
Automatic central locking ............ 127
Locking and unlocking
from the inside ............................. 128
Seats ................................................. 129
Front seat active head restraints . 129
Rear seat head restraints ............. 129
Lumbar support............................ 133
Drive - Dynamic seat* with
multicontour features................... 133
Seat heating* ............................... 135
Seat ventilation* .......................... 136
Folding bench seat in cargo
compartment ............................... 137Memory function ............................... 140
Storing positions into memory ..... 141
Recalling positions from memory . 141
Storing exterior rear view
mirror parking position ................ 141
Lighting ............................................. 143
Exterior lamp switch .................... 143
Combination switch ..................... 147
Hazard warning flasher ................ 147
Interior lighting in the front .......... 148
Door entry lamps ......................... 150
Interior lighting in the rear ........... 150
Instrument cluster ............................. 151
Instrument cluster illumination .... 151
Coolant temperature indicator ..... 152
Trip odometer .............................. 153
Tachometer .................................. 153
Outside temperature indicator ..... 153
86 Safety and SecurityOccupant safetyFor more information, see the “Practical
hints” section (
page 390).Installation of infant and child restraint
systems
Prior to installing a tether strap, note the
following steps:
Roll up retractable luggage cover and
partition net.
Remove storage box (if so equipped)
(page 269).
If the storage box is not removed:
the top tether anchorage ring located
on the floor (
page 87) for use with a
child restraint in the rear center seat
position cannot be accessed.
the hook of the top tether strap when
attached to the anchorage ring on an
outer rear seat backrest may push
against the storage box and prevent
the backrest from properly locking into
position.
If you place a child seat in the left or
center rear seat position, remove twin
roller blind (
page 271) and return
seat to its original position.
If you place a child seat in the right rear
seat position, the twin roller blind can
remain installed if so desired.
Fold the rear backrest slightly forward
(page 260).
Guide top tether strap between head
restraint and top of seat back.
Head restraints must be installed (if re-
movable) and positioned such that the
top tether strap can pass freely
between the head restraint and top of
the seat back.
Make sure the tether strap is not twist-
ed.
Fold the rear backrest back until it
locks in place (
page 261).
Warning!
G
If the indicator lamp should not illuminate,
the system is not functioning. You must see
an authorized Mercedes-Benz Center before
seating any child on the front passenger
seat.Warning!
G
Never place anything between seat cushion
and child seat (e.g. pillow), since it reduces
the effectiveness of the Occupant Classifi-
cation System. The bottom of the child seat
must make full contact with the passenger
seat cushion. An incorrectly mounted child
seat could cause injuries to the child in case
of an accident, instead of increasing protec-
tion for the child.
Follow the manufacturer’s instructions for
installation of child seats.
!Do not reinstall twin roller blind with a
child seat and top tether installed in the
left and center rear seat position.
129 Controls in detailSeats
Seats
For more information on seat adjustment,
see the “Getting started” section
(page 41).
Front seat active head restraints
You cannot remove the active head re-
straint on the driver’s and passenger’s
seats.For removal of the active head restraints
we recommend that you contact an autho-
rized Mercedes-Benz Center.
For information on head restraint adjust-
ment, see “Seats” (
page 42).
For information on active head restraints,
see “Active head restraints” (
page 76).
Rear seat head restraints
Folding head restraints back
The rear seat head restraints can be folded
backward for increased visibility.
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.
iAdjust the head restraint in such a way
that it is as close to the head as possi-
ble.
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.
130 Controls in detailSeatsFolding head restraints back with switch
in the center console
1Head restraint release switch
Switch on the ignition (
page 36).
Press the symbol-side on switch1 to
release the head restraints.
The head restraints will fold backward.Folding head restraints back manually
(rear outer seats only)
1Release button
Push release button1 and fold the
head restraints backward.Placing head restraints upright
Pull the head restraint forward until it
locks into position.!Make sure the head restraints engage
when placing them upright. Otherwise
their protective function cannot be as-
sured.
132 Controls in detailSeatsRemoving and installing rear seat head
restraints
1Release button
Removing rear seat head restraints
Fold back head restraint (
page 129).
Pull head restraint to its highest
position.
Push release button1 and pull out
head restraint.Installing rear seat head restraints
Insert head restraint and push it down
until it engages.
Push button1 and adjust head
restraint to desired position.
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.
!When installing the head restraints,
make sure that:
The proper head restraint for each
seat is installed. The bars of the
head restraint designed for the mid-
dle rear seat are of even length and
shorter than those designed for use
on the outer rear seats.
The head restraints engage fully.
137 Controls in detailSeats
Folding bench seat in cargo compart-mentFolding out the folding bench seat
1Release handle for seat backrest
2Release handle for seat cushion
Before folding out the seat backrest, you
must:
fold the rear seat backrests into an up-
right position and lock them into place
move the handle for the twin roller
blind into the upper position
iThe folding bench seat in the cargo
compartment is approved only for per-
sons up to a height of 4.6 ft (1.40 m)
and a maximum weight of 110 lbs
(50 kg).
The twin roller blind must be installed
when the folding bench seat is in use.Warning!
G
When using the folding bench seat in the
cargo compartment, the seats in front of it
must be in the driving position.
Only drive when the head restraints for the
folding bench seat have been properly ad-
justed. The head restraints should be adjust-
e d so t ha t th e ba c k of th e h ea d is s uppo r te d
at approximately eye level. This can reduce
a child’s risk of injury in the event of an ac-
cident.
Warning!
G
Make sure that the seat belt is positioned
correctly on the body and is engaged in the
seat belt buckle.
Damaged covers should be replaced with
original covers only.
Do not leave children unattended in the ve-
hicle, even when they are secured in a child
restraint system.
Make sure that luggage and other objects
are adequately secured. The load could oth-
erwise injure someone in the event of an ac-
cident, during hard braking or steering
maneuvers.
iThe rear seat backrests can be adjust-
ed to a more reclined position to make
the folding bench seat more comfort-
able (
page 262).
138 Controls in detailSeats
Pull release handle 1 and fold seat
backrest for the folding bench seat up-
ward.
3Mountings for seat belts
Hook seat belts into mountings 3.
Pull release handle 2 and fold seat
cushion for the folding bench seat into
sitting position.
Press seat cushion as far down as it will
go.
The backrest will then also engage
properly.
Fold head restraints into upright posi-
tion.Removing and installing seat cushions
Removing
1Seat guides
2Seat cushion
Fold seat cushion 2 upward and re-
move it from seat guides 1.Installing
Insert seat cushion 2 into seat guides
1 from behind 3 at a slight angle.
Fold seat cushion 2 back into original
position 4 until it engages.
iYou must remove the seat cushion
when you want to raise the loading
floor, e.g. in the event of a flat tire.
139 Controls in detailSeats
Folding back folding bench seat
1Tab
2Backrest
Pull seat cushion upward using tab 1
and fold it back into original position
until it engages.1Release knob
Press release knob 1 and fold head
restraints down.1Release catch
Press release catch 1 and push head
restraints as far in as they will go.
Fold seat backrest of folding bench
seat back into original position until it
engages.
!To avoid damage, insert the head re-
straints completely into their guides
and engage the seat belt buckles in
their guides.