The belt adjustment will apply a certain tighten-
ing force if any slack is detected between the
vehicle occupant and the seat belt. Do not hold
on to the seat belt tightly while it is adjusting.
You can activate and deactivate the belt adjust-
ment via the multimedia system. Information on
activating and deactivating the belt adjustment
can be found in the Digital Owner's Manual.
Belt warning for the driver and front
passenger The
7 seat belt warning lamp in the instru-
ment cluster reminds you that all vehicle occu-
pants must fasten their seat belts. It may light up continuously or flash. A warning tone may also
sound.
The 7 seat belt warning lamp goes out and
the warning tone stops as soon as the driver's
and the co-driver's seat belts have been fas-
tened.
Rear seat belt status indicator The rear seat belt status indicator is available
only in certain countries.
The rear seat belt status indicator informs you
which rear seat belt is not fastened.
Cancelling the rear seat belt status indicator
immediately (Y
page 248). Airbags
Introduction The airbag installation location is identified by
the label AIRBAG.
An airbag supplements a correctly fastened seat
belt. It is not a substitute for seat belts. The air-
bag provides additional protection in the corre-
sponding accident situations.
Not all airbags are deployed in an accident. The
various airbag systems work independently of
one another (Y page 53). However, no system available today can com-
pletely eliminate injuries and fatalities.
Due to the required speed of the airbag after
deployment, it is also not possible to entirely
rule out the risk of injuries caused by the airbag.
Important safety notes G
WARNING
If you deviate from the correct seat position,
the airbag cannot perform its intended pro-
tective function and can even cause addi-
tional injuries when deployed. There is an
increased risk of serious or even fatal injuries.
In order to avoid such risks, always ensure
that all vehicle occupants:
R fasten their seatbelts correctly, including
pregnant women
R are seated correctly and maintain the fur-
thest possible distance from the airbags
R observe the following notes
Always ensure that there are no objects loca-
ted between the airbag and the vehicle occu-
pant.
R Adjust the seats properly before beginning
your journey. Always make sure that the seat
is in an almost upright position. The centre of
the head restraint must support the head at
about eye level.
R Move the driver's and front-passenger seats
as far back as possible. The driver's seat posi-
tion must allow the vehicle to be driven safely.
R Hold the steering wheel only by the rim. This
allows the airbag to be fully deployed.
R Always lean against the backrest while driv-
ing. Do not lean forwards or lean against the
door or side window. You may otherwise be in the deployment area of the airbags.
R Always keep your feet in the footwell in front
of the seat. Do not put your feet on the dash-
board, for example. Your feet may otherwise
be in the deployment area of the airbag.
R Always secure persons less than 1.50 mtall in
suitable restraint systems. Up to this height,
the seat belt cannot be worn correctly. 46
Occupant safetySafety
G
WARNING
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.
Do not interchange the head restraints of the
front and rear seats. Otherwise, you cannot
adjust the height and angle of the head
restraints correctly.
Adjust the head restraint fore-and-aft position
so that it is as close as possible to the back of
your head. G
WARNING
If the driver's seat is not correctly engaged, it could unexpectedly move while driving. This
could cause you to lose control of the vehicle. There is a risk of an accident.
Always ensure that the driver's seat is
engaged before starting the vehicle. G
WARNING
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. G
WARNING
If you adjust the seat height carelessly, you or other vehicle occupants could be trapped andthereby 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 sys-
tem.
G
WARNING
The seat belt does not offer the intended level of protection if you have not moved the back-
rest to an almost vertical position. When brak-
ing or in the event of an accident, you could
slide underneath the seat belt and sustain
abdomen or neck injuries, for example. This
poses an increased risk of injury or even fatal injury.
Adjust the seat properly before beginning
your journey. Always ensure that the backrest
is in an almost vertical position and that the
shoulder section of your seatbelt is routed
across the centre of your shoulder.
! 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 heat-
ing should also not be used to dry the seats.
R clean the seat covers as recommended;
see "Interior care".
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 passen-
gers, if possible.
R when the seat heating is in operation, do
not cover the seats with insulating materi-
als, e.g. blankets, coats, bags, seat covers,
child seats or booster seats.
! Make sure that there are no objects in the
footwell under or behind the seats when mov- ing the seats back. There is a risk that the
seats and/or the objects could be damaged.
i The rear-compartment head restraints can
be removed (Y page 105).
For more information, contact a qualified spe-
cialist workshop.
i Related topic:
R EASY-PACK quickfold rear bench seat
(Y page 308) 102
SeatsSeats, steering wheel and mirrors
Adjusting the seats mechanically and
electrically
Adjusting the front seat Vehicles without the seating comfort
package :
Backrest angle
; Seat height
= Seat fore-and-aft adjustment
Vehicles with the seating comfort pack-
age :
Backrest angle
; Seat height
= Seat cushion angle
? Seat fore-and-aft adjustment
A Seat cushion length
i In vehicles with the seating comfort pack-
age, the seat cushion length is adjusted
mechanically. Adjusting the seat fore-and-aft position Vehicles without the seating comfort
package
X Lift lever =and slide the seat forwards or
backwards.
X Release lever =again.
Ensure that the seat engages audibly.
Vehicles with the seating comfort pack-
age X Lift lever ?and slide the seat forwards or
backwards.
X Release lever ?again.
Ensure that the seat engages audibly.
Adjusting the seat cushion length
mechanically X
Lift lever Aand slide the seat cushion for-
wards or backwards.
X Release lever Aagain.
The seat cushion engages.
i Mechanical seat cushion length adjustment
is available in vehicles with the seating com-
fort package. Adjusting the seats electrically
Electrically adjustable seats with memory
function
: Head restraint height
; Backrest angle
= Seat height
? Seat cushion length
A Seat cushion angle
B Seat fore-and-aft adjustment Seats
103Seats, steering wheel and mirrors Z
i
Further related subjects:
R You can store the seat settings using the
memory function (Y page 113).
R If PRE-SAFE ®
is triggered, the front-
passenger seat will be moved to a better
position if it was previously in an unfavour- able position (Y page 55).
R When the seat is moved forwards or back-
wards, the head restraint is moved up or
down automatically.
Vehicles with AMG Performance Seat: the
height of the head restraint cannot be adjusted. Electrically adjustable seats without mem-
ory function
: Backrest angle
; Seat height
= Seat cushion angle
? Seat fore-and-aft adjustment Electrically adjustable seats without mem-
ory function
: Seat cushion length
X Lift lever :and slide the seat cushion for-
wards or backwards.
X Release lever :again.
The seat cushion engages. Adjusting the head restraints
Important safety notes G
WARNING
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. G
WARNING
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.
General notes Observe the important safety notes
(Y
page 101).
Do not interchange the head restraints of the
front and rear seats. Otherwise, you will not be
able to adjust the height and angle of the head
restraints to the correct position. 104
SeatsSeats, steering wheel and mirrors
Adjusting the head restraint height
mechanically X
To raise: pull the head restraint up to the
desired position.
X To lower: press release catch :in the direc-
tion of the arrow and push the head restraint down to the desired position.
Adjusting the head restraint fore-and-
aft position mechanically This function allows you to adjust the distance
between the head restraint and the back of the
head.
X To move forwards: pull the head restraint
forwards in the direction of the arrow until it
engages in the desired position.
X To move backwards: press and hold release
catch :.
X Push the head restraint back.
X Release the release catch once the head
restraint is in the desired position.
X Ensure that the head restraint has engaged
properly.
Adjust the head restraint fore-and-aft position
so that it is as close as possible to the back of
your head. Adjusting the head restraints electri-
cally X
To adjust the head restraint height: slide
the switch for the head restraint adjustment
(Y page 103) up or down in the direction of the
arrow.
Adjusting the rear seat head restraint
height X
If the head restraint is fully lowered, it is nec-
essary to press release catch :first.
X To raise: pull the head restraint up to the
desired height.
X To lower: press release catch :and push
the head restraint down until it is in the
desired position.
Fitting and removing rear head
restraints X
Release the rear seat backrest and fold it
slightly forwards (Y page 308).
X To remove: pull the head restraint up to the
stop.
X Press release catch :and pull the head
restraint out of the guides.
X To refit: insert the head restraint so that the
notches on the bar are on the left-hand side
when viewed in the direction of travel.
X Push the head restraint down until you hear it
engage in position.
X Fold back the rear seat backrest until it
engages. Seats
105Seats, steering wheel and mirrors Z
Problems with the seat heating / seat ventilation
Problem
Possible causes/consequences and
M
MSolutions The seat heating or seat
ventilation has switched
off prematurely or can-
not be switched on. The on-board voltage is too low because too many electrical consum-
ers are switched on.
X Switch off electrical consumers that you do not need, such as the
rear window heating or interior lighting.
Once the battery is sufficiently charged, the seat heating or seat
ventilation can be switched back on manually. Steering wheel
Important safety notes
G
WARNING
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. G
WARNING
Children could become trapped by the steer-
ing wheel if they adjust it. 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.
The electrically adjustable steering wheel can
still be adjusted when there is no key in the igni-
tion lock. Adjusting the steering wheel man-
ually
:
Release lever
; To adjust the steering wheel height
= To adjust the steering wheel position (fore-
and-aft adjustment)
X Push release lever :down completely.
The steering column is unlocked.
X Adjust the steering wheel to the desired posi-
tion.
X Push release lever :up as far as it will go.
The steering column is locked.
X Check that the steering column is locked.
When doing so, try to push the steering wheel
up or down or try to move it in the fore-and-aft
direction. 108
Steering wheelSeats, steering wheel and mirrors
Adjusting the steering wheel electri-
cally :
To adjust the steering wheel height
; To adjust the steering wheel position (fore-
and-aft adjustment)
i Further related subjects:
R EASY-ENTRY/EXIT feature (Y page 109)
R Storing settings (Y page 113) steering wheel heating
Switching on/off X
Turn the key to position 2in the ignition lock
(Y page 144).
X To switch on/off: turn the lever in the direc-
tion of arrow :or;.
Indicator lamp =lights up or goes out.
If you switch off the ignition, the steering wheel heating is deactivated.
Problems with the steering wheel heating Problem
Possible causes/consequences and
M
MSolutions The steering wheel heat-
ing has switched itself
off prematurely or can-
not be switched on. The on-board voltage is too low because too many electrical consum-
ers are switched on.
X Switch off electrical consumers that you do not need, such as the
rear window heating or interior lighting. EASY-ENTRY/EXIT feature
Important safety notes G
WARNING
When the EASY-ENTRY/EXIT feature adjusts
the steering wheel, you and other vehicle
occupants – particularly children – could
become trapped. There is a risk of injury.
While the EASY-ENTRY/EXIT feature is mak-
ing adjustments, make sure that no one has
any body parts in the sweep of the steering
wheel.
Move the steering wheel adjustment lever if
there is a risk of entrapment by the steering
wheel. The adjustment process is stopped. You can stop the adjustment process by press-
ing one of the memory function's position but-
tons. This function is available only on vehicles
with a memory function. G
WARNING
If children activate the EASY-ENTRY/EXIT fea- ture, they can become trapped, particularly
when unattended. 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. G
WARNING
If you drive off while the EASY-ENTRY/EXIT
feature is making adjustments, you could lose Steering wheel
109Seats, steering wheel and mirrors
Z