60 Safety and SecurityOccupant safetyThe front passenger side impact airbag 2
will only deploy if the system senses that
the front passenger seat is occupied.
The window curtain airbags fill up the area
between the A and C pillars (see arrows).
1Window curtain airbag
2Front side impact airbags
3Rear side impact airbags
Seat belts
The seat belt nonusage warning lamp
<
in the instrument cluster lights up and a
warning sounds for a short time when you
turn the key in the starter switch to
position2 or press the KEYLESS-GO*
start/stop button twice and the drivers
seat belt is not fastened.
After starting the engine, the seat belt non-
usage warning lamp blinks for a brief peri-
od to remind the driver and passengers to
fasten the seat belts.
The use of seat belts and infant and child
restraint systems is required by law in
most states, the District of Columbia and
all Canadian provinces. Even where this is
not the case, all vehicle occupants should
have their seat belts fastened at all times
when driving or riding in the vehicle.
Information on fastening seat belts is
found in the “Getting started” section
(
page 40).
iFor information on infants and children
traveling with you in the vehicle and re-
straint systems for infants and chil-
dren, see “Children in the vehicle”
(page 63).
63 Safety and Security
Occupant safety
Emergency tensioning device (ETD),
seat belt force limiter
The seat belts for the front and rear outer
seats are equipped with emergency ten-
sioning devices and belt force limiters.
The ETD is designed to activate in the fol-
lowing cases when the seat belts are fas-
tened:
in frontal or rear-end impacts exceed-
ing a preset severity level
in certain vehicle rollovers
if the restraint systems are operational
and functioning correctly. See
1
in-
dicator lamp (
page 54).
In an impact, emergency tensioning devic-
es remove slack from the belts in such a
way that the seat belts fit more snugly
against the body. Belt force limiters reduce
the force exerted by the seat belts on oc-
cupants during a crash.Automatic comfort-fit feature seat belt
An automatic comfort-fit feature for front
seats reduces the retracting force of the
seat belts when they are in normal use.
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 and recommended for
use by Mercedes-Benz.
Ensure that the infant or child is prop-
erly secured at all times while the vehi-
cle is in motion.
Infant and child restraint seats and infor-
mation on choosing an appropriate re-
straint system can be obtained from any
Mercedes-Benz Center.
Infant and child restraint systems
Use only a BabySmart
TM compatible child
restraint for the front passenger seat in
this vehicle.
We recommend all infants and children be
properly restrained at all times while the
vehicle is in motion.
Warning!
G
An emergency tensioning device (ETD) that
was activated must be replaced.
When scrapping the emergency tensioning
device, our safety instructions must be fol-
lowed. These are available at your autho-
rized Mercedes-Benz Center.!Do not place objects heavier than 20
lbs (9 kg) on the front passenger seat.
This could cause the front or side im-
pact airbag on the front passenger side
to deploy in a crash which exceeds the
system's deployment threshold.
64 Safety and SecurityOccupant safetyAll lap-shoulder belts except the driver’s
seat belt have special seat belt retractors
for secure fastening of child restraints.
To fasten a child restraint, follow child re-
straint instructions for mounting. Then pull
the shoulder belt out completely and let it
retract. During seat belt retraction, a ratch-
eting sound can be heard to indicate that
the special seat belt retractor is activated.
The belt is now locked. Push down on child
restraint to take up any slack.
To deactivate, release seat belt buckle and
let seat belt retract completely. The seat
belt can again be used in the usual man-
ner.
iInformation on child seats with mount-
ing fittings for tether anchorages
(page 67).
For information on “LATCH”-type child
seat mounts (
page 68).
Warning!
G
Never release the seat belt buckle while the
vehicle is in motion, since the special seat
belt retractor will be deactivated.!The use of infant or child restraints is
required by law in all 50 states, the Dis-
trict of Columbia, the U.S. territories
and all Canadian provinces.
Infants and small children should be
seated in an appropriate infant or child
restraint system properly secured by a
lap-shoulder belt or, if so equipped, a
child restraint lower anchorage system
that complies with U.S. Federal Motor
Vehicle Safety Standards 213 and 225
and Canadian Motor Vehicle Safety
Standards 213 and 210.2.
A statement by the child restraint man-
ufacturer of compliance with this stan-
dard can be found on the instruction
label on the restraint and in the instruc-
tion manual provided with the restraint.
When using any infant or child restraint
system, be sure to carefully read and
follow all manufacturer’s instructions
for installation and use.
Please read and observe warning labels
affixed to inside of vehicle and to infant
or child restraints.
65 Safety and Security
Occupant safety
BabySmart
TM
airbag deactivation
system
1Indicator lamp
BabySmart
TM is a trademark of Siemens
Automotive Corp.
Warning!
G
Children 12 years old and under must never
ride in the front seat, except in a
Mercedes-Benz authorized BabySmart
TM
compatible child seat, which operates with
the BabySmart
TM system installed in the ve-
hicle to deactivate the passenger front air-
bag when it is properly installed. Otherwise
they will be struck by the airbag when it in-
flates in a crash. If this happens, serious or
fatal injury will result.
According to accident statistics, children
are safer when properly restrained in the
rear seating positions than in the front seat-
ing positions. Infants and small children
must ride in back seats and be seated in an
appropriate infant or child restraint system,
which is properly secured with the vehicle’s
seat belt and top tether strap, or secured via
lower anchors and top tether strap, fully in
accordance with the child seat manufactur-
er’s instructions.
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.
Children too big for child restraint systems
must ride in back seats using regular seat
belts. Position shoulder belt across chest
and shoulder, not face or neck. A booster
seat may be necessary to achieve proper
belt positioning for children from 41 lbs. un-
til they reach a height where a lap/shoulder
belt fits properly without a booster.
A child’s risk of serious or fatal injuries is
significantly increased if the child restraints
are not properly secured in the vehicle and
the child is not properly secured in the child
restraint.
When the child restraint is not in use, re-
m o v e i t f r o m t h e v e h i c l e o r s e c u r e i t w i t h t h e
seat belt to prevent the child restraint from
becoming a projectile in the event of an ac-
cident.
Do not leave children unattended in the ve-
hicle; even if the children are secured in a
child restraint system. Unsupervised chil-
dren in a child restraint system may use ve-
hicle equipment and may cause an accident
and/or serious personal injury.
66 Safety and SecurityOccupant safetySpecial BabySmart
TM compatible child
seats, designed for use with the
Mercedes-Benz system and available at
any authorized Mercedes-Benz Center are
required for use with the BabySmart
TM air-
bag deactivation system. With the special
child seat properly installed, the passenger
front airbag will not deploy.
The PASSENGER AIRBAG OFF indicator
lamp1 located in the center console will
be illuminated, except with the key re-
moved or in the starter switch position0.
Self-test BabySmart
TM
without special
child seat installed
After turning the key in the starter switch
to position1 or2 or pressing the
KEYLESS-GO* start/stop button once or
twice, the PASSENGER AIRBAG OFF indi-cator lamp1 located in the center console
lights up for approx. 6 seconds and then
goes out.
If the indicator lamp should not come on or
is continuously lit, the system is not func-
tioning. You must see an authorized
Mercedes-Benz Center before seating any
child on the passenger seat.
More information can be found in the
“Practical hints” section (
page 269).
iThe system does not deactivate the
side impact airbag and the emergency
tensioning device.
Warning!
G
The BabySmart
TM airbag deactivation sys-
tem will ONLY work with a special child seat
designed to operate with it. It will not work
with child seats which are not BabySmart
TM
compatible.
Never place anything between seat cushion
and child seat (e.g. pillow), since it reduces
the effectiveness of the deactivation sys-
tem. The bottom of the child seat must
make full contact with the passenger seat
cushion. An incorrectly mounted child seat
cushion. An incorrectly mounted child seat
could cause injuries to the child in case of an
accident, instead of protecting the child.
Follow the manufacturer’s instructions for
installation of special child seats.Warning!
G
When using a BabySmart
TM compatible
child seat on the front passenger seat, the
passenger front airbag will not deploy only if
the PASSENGER AIRBAG OFF indicator lamp
remains illuminated.
Please be sure to check the indicator every
time you use the special system child seat.
Should the light go out while the restraint is
installed, please check installation. If the
light remains out, do not use the
BabySmart
TM restraint to transport children
on the front passenger seat until the system
has been repaired.
67 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
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.
Head restraint must be positioned such
that the top tether strap can pass freely
between the head restraint and the top of
seat back.
Make sure that the tether strap is not
twisted.2Hook
3Anchorage ring
Securely fasten hook2, which is part of
the tether strap, to anchorage ring3.
Reinstall cover after removing the teth-
er strap.
Warning!
G
Do not place powered-on laptops, cell
phones and like electronic devices on the
front passenger seat. Signals from such de-
vices may interfere with the BabySmart
TM
system. Such signal interference may cause
the PASSENGER AIRBAG OFF indicator lamp
not to come on during self-test or be contin-
uously lit, indicating that the system is not
functioning.
iFor safety, please make sure that the
hook has attached to the ring beyond
the safety catch, as illustrated.
69 Safety and Security
Occupant safety
Blocking of rear window operation
The override switch is located on the driv-
er’s door.
1Override switch
Activating override switch
Slide override switch 1 to the right.
The functions in the rear are disabled.
Deactivating override switch
Slide override switch 1 to the left.
The functions in the rear are enabled
again.For more information on power windows,
see the “Controls in detail” section
(
page 169).
Warning!
G
Children too big for child restraint systems
must ride in back seats using regular seat
belts. Position shoulder belt across chest
and shoulder, not face or neck. A booster
seat may be necessary to achieve proper
belt positioning for children from 41 lbs. un-
til 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 i n t h e
right and left side anchors3.
An incorrectly mounted child seat may come
loose during an accident which could result
in serious injury or death to your child.
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.
iOperation of the rear windows with the
switches located in the driver’s door is
still possible.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
key from the starter switch, take the KEY-
LESS-GO* card with you, and lock your vehi-
cle. Do not leave children unattended in the
vehicle, or with access to an unlocked vehi-
cle. Unsupervised use of vehicle equipment
can cause an accident and / or serious per-
sonal injury.
101 Controls in detailSeats
Warning!
G
The seat belts provide protection only with
the backrest locked in place and, therefore,
must be locked in place with the vehicle in
motion. Do not drive the vehicle when the
backrest is not locked in place. If the warn-
ing message
SEAT BACKREST, RIGHT -
LOCK
or
SEAT BACKREST, LEFT - LOCK
is
displayed in the multifunction display, then
the respective backrest is not engaged in its
lock. Carefully slow down, and drive with
caution to an area which is in a safe distance
from the roadway. Always provide sufficient
room behind the backrest and fold the back-
rest all the way back until it locks in place.
Keep the area around head restraints clear
of articles (e.g. clothing) to not obstruct the
folding operation of the head restraints.
The warning message is no longer displayed
as soon as the backrest is locked in place. If
both backrests are locked in place and the
warning message is still displayed, have the
system checked at your authorized Mer-
cedes-Benz Center immediately.
When leaving the vehicle, always remove the
electronic key from the starter switch, take
the KEYLESS-GO* card with you, and lock
your vehicle.
The power seats can also be operated with
the driver’s or passenger door open. Do not
leave children unattended in the vehicle or
with access to an unlocked vehicle. Unsu-
pervised use of vehicle equipment may
cause an accident and/or serious personal
injury.
Never place hands under seat or near any
moving parts during a seat adjustment pro-
cedure.
!The automatic seat slide is provided
with a safety feature.
The automatic process is interrupted, if
the backrest of the sliding seat is
pushed against an occupant or object.
The seat will slide forward and stop.
Investigate and correct the cause of in-
terruption.
Now use memory button (
page 105)
or seat adjustment switch (page 35)
to bring seat into desired position.
When folding the backrest forward
from a reclined position, and then fold-
ing it back, the backrest stops in a
more upright position for the safety of
any rear-seat passenger. Adjust the
backrest until your arms are slightly an-
gled when holding the steering
wheel (
page 35).