If the seat belt pre-tensioning is not reduced:
X Move the seat backrest or seat back
slightly when the vehicle is stationary.
The seat belt pre-tensioning is reduced and the locking mechanism is released.
The seat-belt adjustment is an integral part of
the PRE-SAFE ®
convenience function. Infor-
mation about the convenience function can
be found under "Belt adjustment"
(Y page 55). Automatic measures after an acci-
dent
Immediately after an accident, the following
measures are implemented, depending on
the type and severity of the impact:
R by activating the hazard warning lamps
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
R vehicles with mbrace: automatic emer-
gency call Children in the vehicle
Important safety notes
If a child younger than 12 years and under 5 ft
(1.50 m) in height is traveling in the vehicle:
R always secure the child in a child restraint
system suitable for Mercedes-Benz vehi-
cles. The child restraint system must be
appropriate 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 be sure to observe the instructions and
safety notes on the "Occupant classifica-
tion system (OCS)" (Y page 59) G
WARNING
If you leave children unsupervised in the vehi- cle, they could set it in motion by, for example:
R release the parking brake.
R shift the automatic transmission out of the
parking 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
SmartKey with you and lock the vehicle. Never
leave children unsupervised in the vehicle. G
WARNING
If persons, particularly children are subjected to prolonged exposure to extreme heat or
cold, there is a risk of injury, possibly even
fatal. Never leave children unattended in the
vehicle. G
WARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularly on the metal parts of the child
restraint system. There is a risk of injury.
If you leave the vehicle, taking the child with
you, always ensure that the child restraint
system is not exposed to direct sunlight. Pro- tect it with a blanket, for example. If the childrestraint system has been exposed to direct
sunlight, let it cool down before securing the
child in it. Never leave children unattended in the vehicle.
Always ensure that all vehicle occupants have
their seat belts fastened correctly and are sit- ting properly. Particular attention must be
paid to children. 68
Children in the vehicleSafety
Seats
Important safety notes
G
WARNING
Children could become trapped if they adjust the seats, particularly when unattended.
There is a risk of injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle.
The seats can still be adjusted when there is
no SmartKey in the ignition lock. G
WARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
Observe the safety notes on "Air bags"
(Y page 56) and "Children in the Vehicle"
(Y page 68). 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
If head restraints are not installed and adjus-
ted correctly, they cannot provide protection
as intended. There is an increased risk of
injury in the head and neck area, e.g. in the
event of an accident or when braking.
Always drive with the head restraints instal-
led. Before driving off, make sure for every
vehicle occupant that the center of the head restraint supports the back of the head at
about eye level.
G
WARNING
You could lose control of your vehicle if you do the following while driving:
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, steering wheel or
mirrors and fasten your seat belt before start- ing the engine.
! To avoid damage to the seats and the seat
heating, observe the following information:
R keep liquids from spilling 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.
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
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.
! To avoid damage to the seats and the seat
heating, observe the following information:
R keep liquids from spilling 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. Seats
109Seats, steering wheel and mirrors Z
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
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 under or behind the seats when
moving the seats back. There is a risk that
the seats and/or the objects could be dam- aged.
i The head restraints cannot be removed.
For more information, contact a qualified
specialist workshop. Adjusting the seats electrically
0043
Head restraint height
0044 Seat height
0087 Seat cushion angle
0085 Seat cushion length
0083 Seat fore-and-aft adjustment
0084 Backrest angle
i Further related subjects:
R You can store the seat settings using the
memory function (Y page 119).
R If PRE-SAFE ®
is triggered, the front-
passenger seat will be moved to a better position if it was previously in an unfav-
orable position (Y
page 67). Adjusting the front-passenger seat
from the driver’s seat
G
WARNING
The front-air bags for could also injure the
vehicle occupants in the front If the front
seats are positioned too close to the dash-
board or steering wheel. This poses an
increased risk of injury or even fatal injury.
Always adjust the front seats so that they are
as far from the front air bags as possible. Also
observe the notes on the correct adjustment
of the seats.
! Do not move the front-passenger seat
fully forwards if there are objects in the
parcel net in the front-passenger footwell.
The objects could otherwise be damaged. You can use the seat switches on the driver's
side to adjust the front-passenger seat.
X To activate/deactivate: press button0043.
If the indicator lamp in button 0043is lit, you can
access the following functions for the front-
passenger seat:
R seat adjustment
R call up the memory function 110
SeatsSeats, steering wheel and mirrors
Removing the seat belt from the belt
guide G
WARNING
When driving off-road, your body is subject to forces from all directions, due to the uneven
surface. You could be thrown from your seat,
for instance. There is a risk of injury.
Always wear a seat belt, even when driving off-
road. Both the driver's seat belt and the front-
passenger seat belt can be removed from the
seat belt guide. This makes it easier to move
the seats forward.
Before you drive off, the seat belt must be
inserted into the seat belt guide.
Observe the safety guidelines for seat belts
(Y page 52).
X To remove: open up magnetic head 0044and
fold the tab up in the direction of the arrow.
X Take the seat belt out of seat belt guide 0043.
X To insert: fold the tab up in the direction of
the arrow.
X Insert the seat belt back into the seat belt
guide and fold the tab back down. Adjusting the head restraints
Adjusting the height of the head
restraints electrically 0043
Head restraint height
0044 Seat height
0087 Seat cushion angle
0085 Seat cushion length
0083 Seat fore-and-aft adjustment
0084 Backrest angle
X To adjust the head restraint height: slide
the switch for the head restraint adjust-
ment 0043up or down in the direction of the
arrow. Moving the seats forward/back
G
WARNING
When you adjust a seat, you or other vehicle
occupants could become trapped, e.g. on the seat guide rail. There is a risk of injury.
Make sure when adjusting a seat that no one
has any body parts in the sweep of the seat.
! Make sure that there are no containers in
the cup holder and no objects in the foot-
well or behind the seats when adjusting the seats. Otherwise, you could damage the
seats and the objects. Seats
111Seats, steering wheel and mirrors Z
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
indicate the heating level you have selected.
X Make sure that the SmartKey is in position
2 in the ignition lock.
X To switch on: press button0043.
Three red indicator lamps in the button light
up. The blower starts up after a preheating phase of seven seconds.
X Press button 0043repeatedly until the
desired heating level is set.
X To switch off: press button0043repeatedly
until all the indicator lamps go out.
i The blower continues running for seven
seconds to cool down the heating ele-
ments.
i If the battery voltage is too low, AIRSCARF
may switch off. Steering wheel
Important safety notes
G
WARNING
You could lose control of your vehicle if you do the following while driving:
R adjust the driver's seat, head restraint,
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 mirror and fasten your seat belt
before starting the engine. G
WARNING
You can no longer steer the vehicle if the
steering wheel lock has been engaged. There is a risk of an accident.
Always switch off the ignition when towing the
vehicle with a tow cable or a tow bar. G
WARNING
Children could injure themselves if they
adjust the steering wheel. There is a risk of
injury.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. Never leave children unsupervised in the vehicle.
The electrically adjustable steering wheel can
still be adjusted when there is no key in the
ignition lock. Adjusting the steering wheel electri-
cally
0043
To adjust the steering wheel height
0044 To adjust the steering wheel position
(fore-and-aft adjustment)
i Further related subjects:
R EASY-ENTRY/EXIT feature
(Y page 115)
R Storing settings (Y page 119)114
Steering wheelSeats, steering wheel and mirrors
Details on the displays:
R for all vehicles except AMG vehicles, see
the separate vehicle Operator's Manual
R for AMG vehicles, see the separate vehicle
Operator's Manual.
Exiting the display X
Slide 009500520096 the COMAND controller until
the desired display (clock or fuel consump-
tion) is shown. Seat functions
Overview Using the
0050button next to the COMAND
controller or the Seat menu item in the sys-
tem menu, you can call up different setting
functions. The following settings depend on
the type of seat and the vehicle model series:
R Seat cushion length
R Backrest side bolsters
R Lumbar
R Balance
R Seat cushion side bolsters
R Dynamics
R Massage
i You can also store and recall the current
seat function settings using the memory
button and the corresponding memory
position switch; see the separate vehicle
Operator's Manual.
The massage function cannot be started or
stopped using the memory button. Selecting the seat First select the seat which you wish to adjust.
This function is not available for all vehicles.
X Press the 0050or0066 button.
X Select Seat Seatand press 0098to confirm.
X To switch to the lower line, for both options
slide 00520064the COMAND controller.
X Select Driver's Seat
Driver's Seat orPassenger
Passenger
Seat
Seat by turning 00790052007Athe COMAND con-
troller and press 0098to confirm.
Adjustment functions Adjusting the seat cushion length
The availability of this function depends on
the type of seat and the vehicle model series. This function allows you to adjust the height
of the seat cushion.
X Select the seat (Y page 314).
X Select Seat Surface Seat Surface by turning00790052007Athe
COMAND Controller and press 0098to con-
firm.
A scale appears. 314
Vehicle functionsCOMAND