
Seat belts
Introduction A correctly worn seat belt is the most effective
means of restraining the movement of vehicle
occupants in the event of a collision or if the
vehicle overturns. This reduces the risk of vehi- cle occupants coming into contact with parts of
the vehicle interior or being ejected from it. The
seat belt also helps to keep the vehicle occu-
pants in the best position in relation to the air-
bag being deployed.
The seat belt system consists of:
R seat belts
R belt tensioners and belt force limiters
If the seat belt is pulled quickly or sharply by the
seat belt guide, the inertia reel locks. The belt
strap cannot be pulled out any further.
The belt tensioner tightens the seat belt in the
event of a collision so that it fits tightly across
your body. However, it does not pull the vehicle occupants back in the direction of the seat
backrest.
The belt tensioner does not, however, correct an
incorrect seat position or correct the routing of
a seat belt that is worn incorrectly.
When triggered, seat belt force limiters help to
reduce the peak force exerted by the seat belt
on the vehicle occupant.
The belt force limiters are synchronised with the front airbags, which take on a part of the decel-
eration force. This can reduce the forces to
which the vehicle occupants are subjected dur- ing an accident.
! If the co-driver's seat is not occupied, do not
engage the seat belt tongue in the buckle on
the co-driver's seat. Otherwise, the belt ten-
sioner could be triggered in the event of an
accident and would have to be replaced.
Important safety notes G
WARNING
If the seat belt is worn incorrectly, it cannot
perform its intended protective function. Fur- thermore, an incorrectly worn seat belt can
cause additional injuries, e.g. in the event of
an accident, heavy braking or sudden
changes of direction. There is an increased
risk of injury, possibly even fatal. Always ensure that all vehicle occupants have
their seat belts fastened correctly and are sit- ting properly. 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. G
WARNING
Persons under 1.50 mtall cannot wear the
seat belts correctly without an additional suit- able restraint system. If the seat belt is worn
incorrectly, it cannot perform its intended
protective function. Furthermore, an incor-
rectly worn seat belt can cause additional
injuries, e.g. in the event of an accident, heavy braking or sudden changes of direction. There
is an increased risk of injury, possibly even
fatal.
Always secure persons less than 1.50 mtall in
additional suitable restraint systems.
If a child younger than twelve years old and
under 1.50 m in height is travelling in the vehi-
cle:
R always secure the child in a child restraint
system suitable for this Mercedes-Benz vehi-
cle. The child restraint system must be appro-
priate to the age, weight and size of the child.
R always observe the instructions and safety
notes on the "Automatic front-passenger
front airbag deactivation system"
(Y page 46)
R always observe the instructions and safety
notes on "Children in the vehicle"
(Y page 54) in addition to the child restraint Occupant safety
41Safety Z

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 Only hold the steering wheel on the outside.
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.
If a child is travelling in your vehicle, also
observe the following notes:
R Always secure children under twelve years of
age and less than 1.50 mtall in suitable child
restraint systems.
R Only secure a child to the front-passenger
seat when the front-passenger front airbag is disabled, and only then in a rearward-facing
child restraint system. If the PASSENGER AIR BAG OFF indicator lamp is permanently lit, the
front-passenger front airbag is disabled
(Y page 40).
R Always observe the instructions and safety
notes on the "Automatic front-passenger
front airbag deactivation system"
(Y page 46) and on "Children in the vehicle" (Y
page 54) in addition to the manufactur-
er's operating and installation instructions for the child restraint system.
Objects in the vehicle interior may prevent
the airbag from functioning correctly. Before
starting your journey and to avoid risks resulting from the speed of the airbag as it deploys, make
sure that:
R there are no people, animals or objects
between the vehicle occupants and an airbag.
R there are no objects between the seat, door
and B-pillar.
R no hard objects, e.g. coat hangers, are hang-
ing on the grab handles or coat hooks.
R no accessories, such as cup holders, are
attached to the vehicle within the deployment
area of an airbag, e.g. to doors or side win-
dows.
R no heavy, sharp-edged or fragile objects are in
the pockets of your clothing. Store such
objects in a suitable place. G
WARNING
If you modify an airbag cover or affix objects
such as stickers to it, the airbag can no longer function correctly. There is an increased risk
of injury.
Never modify an airbag cover or affix objects
to it. G
WARNING
Sensors to control the airbags are located in
the doors. Modifications or work not per-
formed correctly to the doors or door panel-
ling, as well as damaged doors, can lead to the function of the sensors being impaired. The
airbags might therefore not function properly any more. Consequently, the airbags cannot
protect vehicle occupants as they are
designed to do. This poses an increased risk
of injury.
Never modify the doors or parts of the doors.
Always have work on the doors or door pan-
elling carried out at a qualified specialist
workshop. 44
Occupant safetySafety

The driver is not warned before the intervention
of PRE-SAFE ®
PLUS.
PRE-SAFE ®
PLUS does not intervene when
reversing.
When driving, or when parking or exiting a park- ing space with assistance from Active Parking
Assist, PRE-SAFE ®
PLUS will not apply the
brakes.
Function PRE-SAFE
®
PLUS intervenes in certain situa-
tions if the radar sensor system detects an
imminent head-on or rear-end collision.
PRE-SAFE ®
PLUS takes the following measures
depending on the hazardous situation detected:
R if the radar sensor system detects that a
head-on collision is imminent, the seat belts
are pre-tensioned
R if the radar sensor system detects that a rear-
end collision is imminent:
- the rear hazard warning lamps are activa-
ted and flash at a higher frequency
- the brake pressure is increased if the driver
applies the brakes when the vehicle is sta-
tionary
- the seat belts are pre-tensioned
The PRE-SAFE ®
PLUS braking application is can-
celled:
R if the accelerator pedal is depressed when a
gear is engaged
R if the risk of a collision passes or is no longer
detected
R if Distance Pilot DISTRONIC indicates an
intention to pull away
If the hazardous situation passes without result- ing in an accident, the original settings are
restored. Automatic measures after an acci-
dent
Immediately after an accident, the following
measures may be implemented, depending on
the type and severity of the impact: R the hazard warning lamps are activated
R the emergency lighting is activated
R the vehicle doors are unlocked
R the front side windows are lowered R
the electrically adjustable steering wheel is
raised
R the engine is switched off and the fuel supply
is cut off
R vehicles with the Mercedes-Benz emergency
call system: automatic emergency call Children in the vehicle
Important safety notes
If a child younger than twelve years old and
under 1.50 min height is travelling in the vehi-
cle:
R always secure the child in a child restraint
system suitable for Mercedes-Benz vehicles.
The child restraint system must be appropri-
ate to the age, weight and size of the child.
R be sure to observe the instructions and safety
notes in this section in addition to the child
restraint system manufacturer's installation
instructions.
R always pay attention to the instructions and
safety notes on the automatic front-
passenger front airbag deactivation system
(Y page 46). G
WARNING
If you leave children unattended in the vehi-
cle, they may be able to set the vehicle in
motion if, for example, they:
R release the parking brake
R shift the automatic transmission out of park
position P
R start the engine
In addition, they may operate vehicle equip-
ment and become trapped. 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 unattended in the vehicle. G
WARNING
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. 54
Children in the vehicleSafety

G
WARNING
When adjusting a seat, you or another vehicle occupant could become trapped by the guiderail 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.
Observe the safety notes on "Airbags"
(Y page 43) and "Children in the Vehicle"
(Y page 54). 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 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. 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. !
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 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 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 head restraints cannot be removed.
For more information, contact a qualified spe-
cialist workshop. Adjusting the seats electrically
:
Head restraint height
; Seat height
= Seat cushion angle
? Seat cushion length
A Seat fore-and-aft adjustment
B Backrest angle 102
SeatsSeats, steering wheel and mirrors

Adjust the driver's seat, head restraint, steer-
ing wheel and mirrors and fasten your seat
belt before starting the engine.
X To adjust the head restraint height: slide
the switch for the head restraint adjust-
ment :up or down in the direction of the
arrow. Sliding the seats forward/back
G
WARNING
When adjusting a seat, you or another vehicle occupant could become trapped by the guiderail 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.
! Make sure that there are no containers in
the cup holder and no objects in the footwell
or behind the seats when adjusting the seats.
Otherwise, you could damage the seats and
the objects. You can move the seat forwards, in order to gain
better access to the rear compartment, e.g. to
reach the stowage compartment in the rear .
X Remove the seat belt from the seat belt guide
(Y page 103).
X To move the seat forwards: press:on
switch :.
The seat moves automatically to the foremost
position. X
To move the seat backwards: press9
on switch :.
The seat moves back to the previous position.
X To stop seat movement: press:or
9 in the opposite direction. Adjusting the multicontour seat
You can adjust the multicontour seat using
COMAND Online . Adjusting the active multicontour
seat
You can adjust the active multicontour seat
using COMAND Online . Adjusting the 4-way lumbar support
You can adjust the 4-way lumbar support using
COMAND Online . Switching the seat heating on/off
Switching on/off G
WARNING
If you repeatedly switch on seat heating, the
seat cushion and backrest padding may
become very hot. The health of vehicle occu-
pants with limited temperature sensitivity or a limited ability to react to excessively high
temperatures may be affected or they may
even suffer burn-like injuries. There is a risk of
injury.
Therefore, do not switch on the seat heating
repeatedly. 104
SeatsSeats, steering
wheel and mirrors

This could result in burns in the immediate
vicinity of the air vents. There is a risk of injury.
Reduce the heater output before it becomes
too hot. The AIRSCARF function warms the head and
neck area of vehicle occupants with warm air.
The warm air flows out of the holes in the head
restraints.
The three red indicator lamps in the button indi- cate the heating level you have selected.
X Make sure that the key is in position 2in the
ignition lock.
X To switch on: press button:.
Three red indicator lamps in the button light
up. The blower starts up after a preheating
phase of seven seconds.
X Press button :repeatedly until the desired
heating level is set.
X To switch off: press button:repeatedly
until all the indicator lamps go out.
i The blower continues running for seven sec-
onds to cool down the heating elements.
i If the battery voltage is too low, AIRSCARF
may switch off. 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 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 106)
R Storing settings (Y page 111) EASY-ENTRY/EXIT feature
Important safety notes G
WARNING
If you drive off while the EASY-ENTRY/EXIT
feature is making adjustments, you could lose 106
Steering wheelSeats, steering wheel and mirrors

13 mm compared to the normal vehicle level. In
the Comfort andCURVE drive programs, it is
lowered by up to 5 mm compared to the normal vehicle level. As the speed is reduced, the vehi-
cle is raised to the set vehicle height.
Select the normal level for normal road surfaces and the raised level for driving with snow chains
or on particularly poor road surfaces.
Important safety notes G
WARNING
The vehicle is slightly lowered if you:
R have selected the SPORT suspension tun-
ing at normal level and
R switch off the engine
Persons in the vicinity of the wheel arch or the underbody may thus become trapped. There
is a risk of injury.
Make sure that nobody is in the vicinity of thewheel arch or the underbody when you switch
off the engine.
! When the engine is switched off, the vehicle
is lowered if SPORT suspension tuning has
been selected at the normal level. The vehicle
is automatically lowered by approximately
10 mm. Make sure when parking that you
position your vehicle so that it does not make
contact with the kerb as the vehicle is low-
ered. Your vehicle could otherwise be dam-
aged. Setting the raised level X
Make sure that the engine is running or that it
has been switched off by the ECO start/stop
function.
X Make sure that a speed of 120 km/h is not
exceeded.
X If indicator lamp ; ;is not lit: press but-
ton :.
If the engine has been switched off by the ECO
start/stop function, it is now restarted.
Indicator lamp ;lights up. The vehicle is
raised by 50 mm.
Setting the normal level
X Make sure that the engine is running or that it
has been switched off by the ECO start/stop
function.
X If indicator lamp ; ;is lit: press button :.
Indicator lamp ;goes out. The vehicle is
adjusted to the normal level.
The "Raised level" setting is cancelled if you:
R drive faster than approximately 120 km/h
R drive for approximately three minutes at a
speed over 80 km/h
R or switch to the drive program while the vehi-
cle is in motion.
Suspension settings General notes
The electro-hydraulically controlled suspension
features improved driving dynamics, driving
safety and ride comfort. You can also choose
between a sporty, a particularly sporty, a com-
fortable and a comfortable mode with cornering function (CURVE). 176
Driving systemsDriving and parking

X
Switch on the multimedia system. You can
find further information in the separate
COMAND Online operating instructions.
X Press button :.
The driving dynamics display appears in the
multimedia system display.
The following information on the vehicle's oper- ating status is displayed in the driving dynamics display:
R Drive program selected (Y page 139)
R Accelerator pedal position shown in %
R Brake pedal position shown in %
R Steering angle
R Activity of the ABC spring struts
R Vehicle level display (Y page 175)
R Level settings animation
R G-FORCE cross displaying longitudinal and
lateral acceleration (only available in Sportor
Sport Plus drive programs) Active Body Control ABC (Mercedes-
AMG vehicles)
Setting the vehicle level General notes
The vehicle level can be set using the DYNAMIC SELECT controller (Y page 140) or the on-board
computer (Y page 178). The setting always cor-
responds to the last selected function.
In order to reduce fuel consumption and
improve the driving dynamics, the vehicle is low-
ered as its speed increases. In the Sportand
Sport Plus drive programs it is lowered by up to
13 mm, and in the Comfortdrive program by up
to 5 mm compared to the normal vehicle level.
As the speed is reduced, the vehicle is raised to
the set vehicle height.
If the ignition is switched off for less than four
hours, the previously selected drive program is
activated when the engine is next started. If the
ignition is switched off for more than four hours,
the Comfort drive program is activated when
the engine is next started.
Select the normal level for normal road surfaces and the raised level for driving with snow chains
or on particularly poor road surfaces. Important safety notes
The vehicle is slightly lowered when the engine
is switched off. G
WARNING
People's limbs may become trapped if they
are located underneath the vehicle or
between the vehicle body and the tyres when the vehicle is lowering. There is a danger of
injury.
When lowering the vehicle, make sure no one
is underneath the vehicle or in the immediate vicinity of the wheel arches.
! If you have selected the normal level and
switched the engine off, the vehicle is low-
ered. The vehicle is automatically lowered by approximately 10 mm. Make sure when park- ing that you position your vehicle so that it
does not make contact with the kerb as the
vehicle is lowered. Your vehicle could other-
wise be damaged.
Setting the raised level X
Make sure that the engine is running or that it
has been switched off by the ECO start/stop
function.
X Make sure that a speed of 120 km/h is not
exceeded.
X If symbol ; ;is not shown: press=
or ; on the steering wheel to select the
Assist. Assist. menu.
X Press the 9or: button to select
Vehicle level
Vehicle level.
X Press the abutton.
The following message appears: :Vehicle
Vehicle
level Raise with OK
level Raise with OK.
X Press the abutton.
If the engine has been switched off by the ECO
start/stop function, it is now restarted. 178
Driving systemsDriving and parking