Page 76 from 442
75 Safety and Security
The PASS AIR BAG OFF indicator lamp is
located in the center console.
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
air bag may or may not be activated
iDeployment of the driver front air bag
does not mean that the front passenger
front air bag also should have de-
The Occupant Classification System
(page 72) may have determined:
that the seat was empty or occu-
pied by the weight up to or less than
that of a typical 12-month-old child
seated in a standard child restraint
- both instances where the system
suppresses deployment of the pas-
senger front air bag even though
the impact met the criteria and was
of sufficient severity to deploy the
driver front air bag.
that the seat was occupied by a
small individual (such as a young
teenager or a small adult) or a child
weighing more than the weight of a
typical 12-month-old child in a stan-
dard child restraint - instances
where the system may suppress de-
ployment of the passenger front air
bag even though the impact met
the criteria and was of sufficient se-
verity to deploy the driver front air
Page 77 from 442
76 Safety and SecurityOccupant safetyThe PASS AIR BAG OFF indicator lamp1
will be illuminated, except with the
SmartKey removed or in starter switch
position0.Self-test Occupant Classification Sys-
After turning the SmartKey in the starter
switch to position1 or2 or pressing the
KEYLESS-GO* start/stop button once or
twice, the PASS AIR BAG OFF indicator
lamp1 located in the center console illu-
minates. If an adult occupant is properly
sitting on the front passenger seat and the
system senses the occupant as being an
adult, the PASS AIR BAG OFF indicator
lamp will illuminate and go out after ap-
proximately six seconds.
If the seat is not occupied and the system
senses the front passenger seat as being
empty, the PASS AIR BAG OFF indicator
lamp will illuminate and not go out. Warning!
If the 1indicator lamp and the
PASS AIR BAG OFF indicator lamp are lit at
the same time, there is a malfunction in the
Occupant Classification System. The front
passenger front air bag will be deactivated
in this case.
In order to ensure proper operation of the
airbag system and OCS:
Have the system checked as soon as
possible by qualified technicians. Con-
tact an authorized Mercedes-Benz Cen-
Do not place more than 4.4 lbs (2 kg)
into the ruffled storage bag on the back
of the front passenger seat. Otherwise,
the OCS may not be able to properly ap-
proximate the occupant weight catego-
Do not place objects under and / or
around the front passenger seat.
Do not hang anything from or attach any
items to the seats.
Do not stuff objects such as books be-
tween the middle console and the front
Do not move the front passenger seat
backwards against stiff objects.
Sit properly belted in a nearly upright
position with your back against the seat
Do not lean on the armrests or lift your-
self from the seat by using the handle
over the door as this may cause the OCS
to be unable to correctly approximate
the occupant weight category.
Only have the seat repaired or replaced
by an authorized Mercedes-Benz Cen-
Read and observe all warnings in this
Page 78 from 442
77 Safety and Security
More information can be found in the
“Practical hints” section (
page 346).Installation of infant and child restraint
Prior to installing a tether strap, note the
Roll up retractable luggage cover and
Remove storage box (
If the storage box is not removed:
the top tether anchorage ring located
on the floor (
page 78) 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
If you place a child seat in the left or
center rear seat position, remove twin
roller blind (
page 241) 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
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-
Fold the rear backrest back until it
locks in place (
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
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.
Page 79 from 442
78 Safety and SecurityOccupant safety
Anchorage rings1 are located on the
back side of the outer rear backrests and
on the floor behind the rear center seat.
Fold up anchorage ring1.
Securely fasten hook2, which is part
of the tether strap, to anchorage
Once the top tether anchorage hook is
attached, the child restraint itself can be
secured. Tighten the top tether strap ac-
cording to the child restraint manufactur-
iWith a child seat and top tether in-
stalled in the right rear seat position
and twin roller blind installed, make
sure the top tether strap is positioned
between seat backrest and twin roller
Always lock backrest in its upright position
when rear seat bench is occupied by pas-
sengers, or the extended cargo compart-
ment is not in use. Check for secure locking
by pushing and pulling on the backrest.
iFor safety, make sure the hook has
attached to the ring beyond the safety
catch, as illustrated below.
Page 80 from 442
79 Safety and Security
Child seat anchors - LATCH type
This vehicle is equipped with two LATCH
nchors and T
ethers for CH
type anchors (at each of the outer rear
seats) for the installation of a LATCH child
seat with the matching mounting fittings.
The anchors are located behind an uphol-
1Indicates the position of the anchors
Install child seat according to the
manufacturer’s instructions.!Make sure the seat belt for the center
seat can operate freely with a child
seat installed.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
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 proper-
ly without a booster.
Install child seat according to manufactur-
The child seat must be firmly attached in the
right and left side anchors2.
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-
Do not leave children unattended in the ve-
hicle, even if the children are secured in a
child restraint system.