56 Safety and Security
Occupant safety
If the active head restraints have been trig-
gered in an accident, the active head re-
straints must be reset. Otherwise, the
active head restraints cannot offer any ad-
ditional protection in the event of another
rear-end collision.
For information on resetting the activated
active head restraints, see “Resetting acti-
vated head restraints” (
page 675).
You cannot remove the active head re-
straint on the driver’s and front passen-
ger’s seats.
For removal contact an authorized
Mercedes-Benz Center.
For information on head restraint adjust-
ment, see “Head restraints” (
page 353).Preventive occupant safety
(PRE-SAFE®)
Your vehicle automatically takes preven-
tive measures to better protect the occu-
pants in the following hazardous
situations.
Warning!G
Only use seat or head restraint covers which
have been tested and approved by
Mercedes-Benz for your vehicle model.
Using other seat or head restraint covers
may interfere with or prevent the activation
of the active head restraints.
Contact an authorized Mercedes-Benz Cen-
ter for availability.
Warning!G
For your protection, drive only with properly
positioned head restraints.
Adjust 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.
Do not drive the vehicle without the seat
head restraints. Head restraints are intend-
ed to help reduce injuries during an acci-
dent.
Warning!G
The PRE-SAFE® system is intended to re-
duce the effects of an accident on properly
seat-belted vehicle occupants. Despite
having the PRE-SAFE
® system in your vehi-
cle, the possibility of injuries occurring as a
result of an accident cannot be eliminated.
Therefore, you should always drive carefully
and adjust your driving to the prevailing
road, weather, and traffic conditions.
57 Safety and Security
Occupant safety
PRE-SAFE® takes action in the following in-
stances:
Emergency braking situations, e.g.
when BAS (
page 68) is activated or
when
BAS Plus* (
page 69) is strongly inter-
vening.
Critical dynamic driving situations, e.g.
when the vehicle is understeering or
oversteering because it has exceeded
its physical limitations.
Evasive steering maneuvers at speeds
above 20 mph (30 km/h).
When you are driving faster than 20 mph
(30 km/h), PRE-SAFE
® takes the following
measures in such situations:
The front seat belts are pre-tensioned
electrically.
If the OCS senses that the front pas-
senger seat is occupied and the seat is
in an unfavorable position, it will be
adjusted to a better position.
If the vehicle is equipped with power
adjustable rear seats* and the passen-
ger outer seats are in an unfavorable
position, they will be adjusted to a bet-
ter position.
The system increases the air pressure
in the air pockets (on the sides of the
seat cushion and backrest) of the mul-
ticontour* and/or drive-dynamic front
seats*.
If the vehicle is understeering or over-
steering, the tilt/sliding sunroof and
the door windows also close until only
a small gap remains.
Once the hazardous situation is over with-
out an accident occurring, PRE-SAFE
®
loosens the seat belt pre-tension and de-
creases the air pressure in the air pockets
of the multicontour and drive-dynamic
seats*. You can readjust all of the settings
made by PRE-SAFE
®.If the seat belts do not release:
Adjust the backrest or seat slightly to
the rear until the seat belt tension is di-
minished.
The locking mechanism releases.
Children in the vehicle
If an infant or child is traveling with you in
the vehicle:
Secure the child using an infant or child
restraint appropriate to the age and
size of the child.
Make sure the infant or child is
properly secured at all times while the
vehicle is in motion.
iIf the closing procedure of the tilt/sliding
sunroof or power windows is blocked, the
tilt/sliding sunroof or power windows will stop
and open slightly.
!When moving the seat, make sure there are
no items in the footwell or behind the seats. Oth-
erwise you could damage the seats.
59 Safety and Security
Occupant safety
To deactivate, release seat belt buckle and
let seat belt retract completely. To deacti-
vate the special seat belt retractor for the
front passenger seat, the front passenger
seat must be in the most backward posi-
tion. The seat belt can again be used in the
usual manner.
The use of infant or child restraints is re-
quired by law in all 50 states, the District
of Columbia, the U.S. territories and all Ca-
nadian provinces.Infants and small children should be seat-
ed in an appropriate infant or child re-
straint system properly secured in
accordance with the manufacturer’s in-
structions for the child restraint, that com-
plies with U.S. Federal Motor Vehicle
Safety Standards 213 and 225 and Canadi-
an Motor Vehicle Safety Standards 213
and 210.2.
A statement by the child restraint manu-
facturer of compliance with these stan-
dards can be found on the instruction label
on the restraint and in the instruction man-
ual provided with the restraint.
When using any infant or child restraint
system, make sure to carefully read and
follow all manufacturer’s instructions for
installation and use.
Please read and observe warning labels af-
fixed to the inside of the vehicle and to
infant or child restraints.
Warning!G
Never release the seat belt buckle while the
vehicle is in motion, since the special seat
belt retractor will be deactivated.
iInformation on child seats with mounting fit-
tings for tether anchorages (
page 61).
For information on LATCH-type child seat
mounts (
page 62).
Warning!G
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing position. Thus, we strongly recommend
that children be placed in the rear seats
whenever possible. Regardless of seating
position, children 12 years old and under
must be seated and properly secured in an
appropriately sized infant restraint, toddler
restraint, or booster seat recommended for
the size and weight of the child.
61 Safety and Security
Occupant safety
Installation 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.
1Cover of top anchorage ring
Bring the rear power seat backrest* to
a fully upright position (
page 349).
Remove cover1 from anchorage ring.
Store cover1 in a convenient place
(e.g. glove box).
Guide tether strap between head re-
straint and top of seat back.
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 seat belt posi-
tioning for children over 41 lbs until they
reach a height where a lap/shoulder belt fits
properly without a booster.
When the child restraint is not in use,
remove it from the vehicle or secure it with
the seat belt to prevent the child restraint
from becoming a projectile in the event of
an accident.
Do not leave children unattended in the
vehicle, even if the children are secured in a
child restraint system. Unsupervised chil-
dren in a child restraint system may use
vehicle equipment and may cause an acci-
dent and/or serious personal injury.
62 Safety and Security
Occupant safety
Head restraints must be positioned such
that the top tether strap can pass freely
between the head restraint and top of seat
back.
Make sure the tether strap is not
twisted.
2Hook
3Anchorage ring
Securely fasten hook2, which is part
of the tether strap, to anchorage
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.
Reinstall cover after removing the
tether strap.Child seat anchors – LATCH type
This vehicle is equipped with two LATCH
(L
ower Anchors and Tethers for CHildren)
type anchors (at each of the rear seats) for
the installation of a LATCH child seat with
the matching anchor fittings.
iFor safety reasons, make sure hook2 has
attached to ring3 beyond the safety catch, as
illustrated.
Warning!G
Vehicles with rear power seats*: Never ad-
just the rear seat position after installing the
child restraint. Adjusting the rear seat posi-
tion after installing the child restraint could
damage the child restraint and/or introduce
undesirable slack or tension into the seat
belt and loosen or misposition the child re-
straint, lessening the effectiveness of the
child restraint and thus increasing the
chance or severity of injury in an accident.
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 seat belt posi-
tioning for children over 41 lbs until they
reach a height where a lap/shoulder belt fits
properly without a booster.
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 t o t h e
right and left side anchors.
An incorrectly mounted child seat may come
loose during an accident which could result
in serious injury or death to the child.
63 Safety and Security
Occupant safety
If you have not installed a child seat, the
LATCH anchors are hidden by an uphol-
stery cover.
1Indicates the position of the anchors
2Anchors
3Upholstery cover
4Installation device
Bring the rear power seat backrest* to
its fully upright position (
page 349).
Fold upholstery cover3 upward.
Turn installation device4 to a vertical
position so that upholstery cover3
does not fold down.
Install child seat according to the man-
ufacturer’s instructions.
A rigid connection is established be-
tween the child seat and the body of
the vehicle.Override switch for rear passenger
compartment
You can disable select functions in the rear
passenger compartment for added safety
(for instance when you have children riding
in the rear passenger compartment).
You can disable the following functions in
the rear passenger compartment:
rear door window operation
(
page 383)
adjustment of front passenger seat
from the rear* (
page 349)
rear center console lighter
(
page 505)
Damaged or impact damaged child seats or
child seat mounting fittings must be re-
placed.
Do not leave children unattended in the ve-
hicle, even if the children are secured in a
child restraint system.
Warning!G
Vehicles with rear power seats*: Never ad-
just the rear seat position after installing the
child restraint. Adjusting the rear seat posi-
tion after installing the child restraint could
damage the child restraint and/or introduce
undesirable slack or tension into the seat
belt and loosen or misposition the child re-
straint, lessening the effectiveness of the
child restraint and thus increasing the
chance or severity of injury in an accident.
iThe child seat must be firmly attached to the
right and left side anchor fittings.
Make sure the seat belt for the center seat can
operate freely with a child seat installed.
Non-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 manu-
facturer’s instructions.
64 Safety and Security
Occupant safety
sunblinds for panorama roof*
(
page 489)
rear window sunshade (page 503)
and rear side window sunshades
(
page 385)
The override switch is located on the driv-
er’s door.
1Override switch
2Indicator lamp
Activating: Press switch 1.
Indicator lamp2 comes on. The func-
tions in the rear are disabled.
Deactivating: Press switch 1 again.
Indicator lamp2 goes out. The func-
tions in the rear are enabled again.
Warning!G
Activate the override switch when children
are riding in the back seats of the vehicle.
The children may otherwise injure them-
selves, e.g. by becoming trapped in the win-
dow opening.
When leaving the vehicle, always remove the
SmartKey or SmartKey with KEYLESS-GO*
from the starter switch, take it with you, and
lock your vehicle. Do not leave children un-
attended in the vehicle, or with access to an
unlocked vehicle. A child’s unsupervised ac-
cess to a vehicle could result in an accident
and/or serious personal injury.
iOperation of the rear door windows with the
switches located in the driver’s door is still pos-
sible.
83 Control systems
COMAND operating safety
COMAND introduction
COMAND FM/AM radio
COMAND satellite radio* (USA only)
COMAND
audio CD/audio DVD/MP3
COMAND video DVD (USA only)
COMAND telephone*
COMAND navigation
COMAND address book
COMAND system settings
COMAND vehicle menu
COMAND automatic climate control
COMAND seats
Instrument cluster control system
Voice Control*