Fastening seat beltsXAdjust the seat and move the backrest to
an almost vertical position ( Y page 94).XPull the seat belt smoothly through belt
sash guide :.XWithout twisting it, guide the shoulder sec-
tion of the seat belt across the middle of
your shoulder and the lap section across
your pelvis.XEngage belt tongue ; in buckle =.
Seat belt adjustment: if necessary, the driv-
er's and front-passenger seat belts auto-
matically adjust to the upper body
( Y page 48).XIf necessary, adjust the seat belt to the
appropriate height ( Y page 48).XIf necessary, pull upwards on the shoulder
section of the seat belt to tighten the belt
across your body.
Information on releasing the seat belt with
release button ?(Y page 49).
Seat belt adjustment
The seat-belt adjustment function adjusts the
driver's and front-passenger seat belt to the
upper body of the occupants.
The belt strap is tightened slightly when:
R you engage the belt tongue in the belt
buckle and you then turn the key to position
2 in the ignition lock.
R the key is in position 2 in the ignition lock
and you then engage the belt tongue in the
buckle.
The seat-belt adjustment will apply a certain
tightening force if any slack is detected
between the occupant and the seat belt. Do
not hold on to the seat belt tightly while it is
adjusting. You can switch the seat-belt
adjustment on and off in the on-board com-
puter ( Y page 225).
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. More
information about PRE-SAFE ®
can be found
in the "PRE-SAFE ®
(preventative occupant
protection)" section ( Y page 46).
Belt height adjustment
You can adjust the belt height for the front
seats. Adjust the belt to a height that allows
the upper part of the seat belt to be routed
across the centre of your shoulder.
XTo raise: slide the belt sash guide upwards.
The belt sash guide engages in various posi-
tions.XTo lower: press and hold belt sash guide
release :.XSlide the belt sash guide downwards.XLet go of belt sash guide release : and
make sure that the belt sash guide has
engaged.48Occupant safetySafety
ProCarManuals.com
in special child restraint systems on a suit-
able vehicle seat. This is necessary
because the seat belts are not designed for
children.
R Do not transport children who are secured
in rearward-facing child restraint systems
on the front-passenger seat. Exception: if
the vehicle is equipped with automatic child
seat recognition on the front-passenger
seat and the child is secured in a child
restraint system with transponders for
automatic child seat recognition
R If you secure a forward-facing child
restraint system to the front-passenger
seat, you must move the front-passenger
seat as far back as possible. When doing
so, ensure that the shoulder belt strap from
the belt outlet on the vehicle is routed
towards the front to the shoulder belt guide
on the child restraint system. Set the belt
height adjustment so that the belt strap is
routed towards the front along the bottom.
R Children must never travel sitting on the lap
of another occupant. Due to the forces
which occur in the event of a sudden
change of direction, heavy braking or an
accident, it would not be possible to
restrain the child. The child could be thrown
against parts of the vehicle interior and be
seriously or even fatally injured.GWARNING
If the child restraint system is incorrectly fit-
ted on the seat position suitable for this pur-
pose, it cannot perform its intended protec-
tive function. In the event of an accident,
sharp braking or a sudden change in direction,
the child may not be held securely. There is
an increased risk of serious or even fatal inju-
ries.
Observe the manufacturer's installation
instructions and the correct use for the child
restraint system. Make sure that the entire
surface of the child restraint system is resting
on the seat surface. Never place objects
under or behind the child restraint system,
e.g. cushions. Only use child restraint sys-
tems with the original cover designed for
them. Only replace damaged covers with gen-
uine covers.GWARNING
If the child restraint system is fitted incor-
rectly or is not secured, it can come loose in
the event of an accident, heavy braking or a
sudden change in direction. The child
restraint system could be thrown about, strik-
ing vehicle occupants. There is an increased
risk of injury, possibly even fatal.
Always fit child restraint systems properly,
even if they are not being used. Make sure
that you observe the child restraint system
manufacturer's installation instructions.
GWARNING
Child restraint systems or their securing sys-
tems that have been damaged or subjected to
a load in an accident cannot perform their
intended protective function. In the event of
an accident, sharp braking or a sudden
change in direction, the child may not be held
securely. There is an increased risk of serious
or even fatal injuries.
Immediately replace child restraint systems
that have been damaged or subjected to a
load in an accident. Have the child restraint
securing systems checked in a qualified spe-
cialist workshop before fitting a child restraint
system again.
GWARNING
If children are left unsupervised in the vehicle,
they could:
R open the doors, thus endangering other
people or road users.
R get out and disrupt traffic.
R operate the vehicle's equipment.
Children in the vehicle51SafetyZProCarManuals.com
Additionally, children could set the vehicle in
motion if, for example, they:
R release the parking brake.
R shift the automatic transmission out of
parking position P.
R shift the manual transmission into neutral.
R start the engine.
There is a risk of an accident and injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children or animals unattended in the vehicle.
Always keep the key out of reach of children.GWARNING
If persons (particularly children) are exposed
to heat or cold for a prolonged period, there
is a risk of serious or even fatal injuries. Never
leave persons (particularly children) unatten-
ded in the vehicle.
GWARNING
If the child restraint system is placed in direct
sunlight, the parts could become very hot.
Children could be suffer burns by touching
these parts, in particular on the metallic parts
of the child restraint system. There is a risk of
injury.
If you and your child leave the vehicle, always
make sure that the child restraint system is
not in direct sunlight. Cover it with a blanket,
for example. If the child restraint system has
been exposed to direct sunlight, leave it to
cool down before securing the child in it.
Never leave children unattended in the vehi-
cle.
If a child is travelling in your vehicle, secure
the child using a child restraint system which
is appropriate to the size, age and weight of
the child. In order to correctly secure the child
in the child restraint system, always comply
with the child restraint system manufactur-
er's installation instructions. You should pref-
erably fit the restraint system to a suitable
rear seat. Make sure that the child is secured
for the trip.
Mercedes-Benz recommends that you use
the listed child restraint systems
( Y page 59). You can obtain further infor-
mation about the correct child restraint sys-
tem from any Mercedes-Benz Service Centre.
i It is advisable to use Mercedes-Benz care
products to clean child restraint systems.
You can obtain information about this at
any Mercedes-Benz Service Centre.
Child restraint system on the front-
passenger seatGWARNING
If the front-passenger front airbag is not dis-
abled:
R a child secured in a child restraint system
on the front-passenger seat could be seri-
ously or even fatally injured by the front-
passenger airbag deploying. This is espe-
cially a risk if the child is in the immediate
vicinity of the front-passenger front airbag
when it deploys.
R never secure a child on the front-passenger
seat in a rearward-facing child restraint sys-
tem. Only secure a rearward-facing child
restraint system on a suitable rear seat.
R and you secure a forward-facing child
restraint system to the front-passenger
seat, you must move the front-passenger
seat as far back as possible. When doing
so, ensure that the shoulder belt strap from
the belt outlet on the vehicle is routed
towards the front to the shoulder belt guide
on the child restraint system. Set the belt
height adjustment so that the belt strap is
routed towards the front along the bottom.
The front-passenger front airbag is not disa-
bled:
R on vehicles without automatic child seat
recognition on the front-passenger seat
R on vehicles with automatic child seat rec-
ognition on the front-passenger seat,
unless a child restraint system with trans-
52Children in the vehicleSafety
ProCarManuals.com
Suitable positioning of the child restraint systems
Only child restraint systems which are approved in accordance with the ECE standard ECE
R44 are permitted for use in the vehicle.
Suitability of the seats for attaching belted child restraint systems
Key to the letters used in the table:
XSeat which is unsuitable for children in this weight category.USuitable for child restraint systems in the "Universal" category that are approved for use
in this weight category.UFSuitable for forward-facing child restraint systems that belong to the "Universal" category
and are approved for use in this weight category.LSuitable for child restraint systems as recommended, see the following table of "Recom-
mended child restraint systems" ( Y page 59).Seat positionsWeight catego-
riesFront-passenger seatRear seat 1Front-
passenger
front airbag is
not disabledFront-
passenger
front airbag is
disabledLeft, rightCentreCategory 0: up
to 10 kgXU 2, 3
, L2, 3U, LU, LCategory 0+:
up to 13 kgXU 2, 3
, L2, 3U, LU, LCategory I:
9 to
18 kgUF 3
, L 3U3
, L 3U, LU, L1
If you use a baby car seat of category 0 or 0+ or a rearward-facing child restraint system of category I on a
rear seat, you must adjust the driver's or front-passenger seat so that the seat does not touch the rearward-
facing child restraint.
2 Vehicles with automatic child seat recognition in the front-passenger seat: a child restraint system of the
"Universal" category with a transponder for automatic child seat recognition must be fitted. The PASSENGER
AIRBAG OFF indicator lamp must be lit.
3 Move the front-passenger seat as far back as possible. If you secure a child in a forward-facing child restraint
system on the front-passenger seat, ensure that the shoulder belt strap from the belt outlet on the vehicle
is routed towards the front to the shoulder belt guide on the child restraint system. Set the belt height
adjustment so that the belt strap is routed towards the front along the bottom. Move the front-passenger
seat to the highest position and move the backrest to an almost vertical position. When doing so, ensure
that the complete surface of the child restraint system rests against the backrest of the front-passenger seat
and that the child restraint system does not touch the roof. To do so, you may have to adjust the backrest
down a little. For seats with electrical adjustment, the seat cushion angle must be set to the highest and
most upright position.Children in the vehicle57SafetyZProCarManuals.com
Seat positionsWeight catego-
riesFront-passenger seatRear seat 1Front-
passenger
front airbag is
not disabledFront-
passenger
front airbag is
disabledLeft, rightCentreCategory II: 15
to 25 kgUF 3
, L 3U3
, L 3U, LU, LCategory III:
22 to 36 kgUF 3, 4
, L3, 4UF 3, 4
, L3, 4U, L 4U, L4
Example: approval label on the child restraint system
" Universal" category child restraint systems can be recognised by their orange approval label
and the text "Universal".
" Universal" category child restraint systems can be used on the seats indicated with U, UF or
IUF according to the tables "Suitability of the seats for attaching belted child restraint systems"
or "Suitability of the seats for attaching an ISOFIX child restraint system".
Semi-universal child restraint systems are indicated by the text "semi-universal" on the
approval label. These can be used if the vehicle and the seat are listed in the child restraint
1 If you use a baby car seat of category 0 or 0+ or a rearward-facing child restraint system of category I on a
rear seat, you must adjust the driver's or front-passenger seat so that the seat does not touch the rearward-
facing child restraint.
3 Move the front-passenger seat as far back as possible. If you secure a child in a forward-facing child restraint
system on the front-passenger seat, ensure that the shoulder belt strap from the belt outlet on the vehicle
is routed towards the front to the shoulder belt guide on the child restraint system. Set the belt height
adjustment so that the belt strap is routed towards the front along the bottom. Move the front-passenger
seat to the highest position and move the backrest to an almost vertical position. When doing so, ensure
that the complete surface of the child restraint system rests against the backrest of the front-passenger seat
and that the child restraint system does not touch the roof. To do so, you may have to adjust the backrest
down a little. For seats with electrical adjustment, the seat cushion angle must be set to the highest and
most upright position.
4 For certain child restraint systems in this weight category, this can mean that the area of use is restricted
as the maximum size setting of the child restraint system is not possible due to possible contact with the
roof.58Children in the vehicleSafety
ProCarManuals.com
front to the shoulder belt guide on the child restraint system. Set the belt height adjustment
so that the belt strap is routed towards the front along the bottom.Weight catego-
riesManufac-
turerTypeApproval
number
(E1 ...) Order num-
ber
(A 000 ...) 5Automatic
child seat
recognitionCategory 0: up
to 10 kg
up to approx-
imately
6 monthsBritax
RömerBABY
SAFE plus03 301146
04 301146970 10 00YesCategory 0+:
up to 13 kg
up to approx-
imately
15 monthsBritax
RömerBABY
SAFE plus03 301146
04 301146970 10 00YesCategory I: 9 to
18 kg
between
approximately
9 months and
4 yearsBritax
RömerDUO plus03 301133
04 301133970 11 00Yes970 16 00NoGroup II/III: 15
to 36 kg
between
approximately
4and 12 yearsBritax
RömerKIDFIX04 301198970 18 00Yes970 19 00No
Suggested "Universal"/"Semi-Universal" category ISOFIX child restraint systems:
Weight
catego-
riesSize cate-
goryManufac-
turerTypeApproval
number
(E1 ...) Order
number 5Auto-
matic
child seat
recogni-
tionCarry-cotF–––––G–––––Category
0:
up to
10 kgE–––––60Children in the vehicleSafety
ProCarManuals.com
The seat belt should:
R fit snugly across your body
R be routed across the middle of your
shoulder
R be routed in your pelvic area across the
hip jointsXBefore starting off, adjust the rear-view mir-
ror and the exterior mirrors ( Y page 101)
so that you have a good view of road and
traffic conditions.XVehicles with a memory function: save
the seat and exterior mirror settings
( Y page 103).
Seats
Important safety notes
GWARNING
If children adjust the seats, they could
become trapped, especially if they are unat-
tended. There is a risk of injury.
When leaving the vehicle, always take the key
with you and lock the vehicle. Never leave
children unattended in the vehicle.
GWARNING
You could lose control of the vehicle while
driving if you:
R adjust the driver's seat, steering wheel or
mirrors
R fasten the seat belt
There is a risk of an accident.
Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine.
GWARNING
If you adjust the seat height carelessly, you or
other vehicle occupants could be trapped and
thereby injured. Children in particular could
accidentally press the electrical seat adjust-
ment buttons and become trapped. There is
a risk of injury.
While moving the seats, make sure that your
hands or other body parts do not get under
the lever assembly of the seat adjustment
system.GWARNING
When adjusting a seat, you or another vehicle
occupant could become trapped by the guide
rail of the seat, for instance. There is a risk of
injury.
Make sure that no one has any part of their
body within the sweep of the seat when
adjusting it.
GWARNING
The seat belt does not offer the intended level
of protection if the backrest is not in the
upright position. When braking or in the event
of an accident, you could slide underneath the
seat belt and sustain abdomen or neck inju-
ries, for example. This poses an increased risk
of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always make sure that the seat
is in the upright position.
GWARNING
The head restraints cannot provide the inten-
ded protection unless they are fitted and
adjusted correctly. There is an increased risk
of injury to the head and neck in the event of
an accident or sudden braking, for example.
Always drive with the head restraints fitted.
Ensure that the centre of the head restraints
support the back of each vehicle occupant's
head at eye level before driving off.
! To avoid damage to the seats and the seat
heating, observe the following information:
R do not spill any liquids on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
R if the seat covers are damp or wet, do not
switch on the seat heating. The seat
heating should also not be used to dry
the seats.
Seats95Seats, steering wheel and mirrorsZProCarManuals.com
Rclean the seat covers as recommended;
see the "Interior care" section.
R do not transport heavy loads on the
seats. Do not place sharp objects on the
seat cushions, e.g. knives, nails or tools.
The seats should only be occupied by
passengers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating mate-
rials, e.g. blankets, coats, bags, seat cov-
ers, child seats or booster seats.
! Make sure that there are no objects in the
footwell or behind the seats when moving
the seat back. There is a risk that the seats
and/or the objects could be damaged.
i The head restraints in the front and rear
seats can be removed. 6
For more information, contact a qualified
specialist workshop.
i Further related subjects:
R Luggage compartment enlargement
(folding down the rear seats)
( Y page 271)
Adjusting the seats manually
Seat fore-and-aft adjustmentXLift handle : and slide the seat forwards
or rearwards.XRelease lever : again.
Make sure that you hear the seat engage in
position.
Backrest angle
XRelieve the pressure on the backrest.XTurn handwheel ? forwards or backwards.
Seat height
XPull handle = upwards or push it down
repeatedly until the seat has reached the
desired height.
Seat cushion angle
Adjust the angle so that your thighs are lightly
supported.
XTurn handwheel ; forwards or backwards.
Adjusting the seats electrically
:Head restraint height 7;Seat cushion angle=Seat height?Seat fore-and-aft adjustmentABackrest angle6
Not on vehicles with sports seats.
7 Not available on vehicles with sports seats.96SeatsSeats, steering wheel and mirrors
ProCarManuals.com