MERCEDES-BENZ CLS 2018 Owners Manual

X
Make sure that all the side windows and the
sliding sunroof are closed. X
Make sure that all the side windows are
closed. X
To interrupt convenience closing: release
the 7 button.
Using KEYLESS-GO The driver's door and the door at which the han-
dle is used, must both be closed. The SmartKey
must be outside the vehicle. The gap between
the SmartKey and the corresponding door han-
dle should not be greater than 3 ft (1 m).
X
Touch recessed sensor surface C on the
door handle until the side windows and the
sliding sunroof are fully closed. X
Touch recessed sensor surface C on the
door handle until the side windows are fully
closed.
i Make sure you only touch recessed sensor
surface C . X
Make sure that all the side windows and the
sliding sunroof are closed. X
Make sure that all the side windows are
closed. X
To interrupt convenience closing: release
recessed sensor surface C on the door han-
dle.
Resetting the side windows If a side window can no longer be closed fully,
you must reset it. X
Close all the doors. X
Turn the SmartKey to position 1 or 2 in the
ignition lock. X
Pull the corresponding switch on the door
control panel until the side window is com-
pletely closed ( Y
page 87). X
Hold the switch for an additional second.
If the side window opens again slightly: X
Immediately pull the corresponding switch on
the door control panel until the side window is
completely closed ( Y
page 87).X
Hold the switch for an additional second. X
If the respective side window remains closed
after the button is released, then it has been
set correctly. If this is not the case, repeat the
steps above again.
Problems with the side windows
G WARNING
If you close a side window again immediately after it has been blocked or reset, the side window
closes with increased or maximum force. The reversing feature is then not active. Parts of the
body could be trapped in the closing area in the process. This poses an increased risk of injury or
even fatal injury.
Make sure that no parts of the body are in the closing area. To stop the closing process, release
the switch or push the switch again to reopen the side window. Side windows 89
Opening and closing Z

Problem
Possible causes/consequences and P Solutions
A side window cannot be
closed because it is
blocked by objects, e.g.
leaves in the window
guide. X
Remove the objects. X
Close the side window.
A side window cannot be
closed and you cannot
see the cause. If a side window is obstructed during closing and reopens again
slightly: X
Immediately after the window blocks, pull the corresponding switch
again until the side window has closed.
The side window is closed with increased force.
If a side window is obstructed again during closing and reopens again
slightly: X
Immediately after the window blocks, pull the corresponding switch
again until the side window has closed.
The side window is closed without the automatic reversing feature.
Sliding sunroof
Important safety notes
G WARNING
While opening and closing the sliding sunroof,
body parts in close proximity could become
trapped. There is a risk of injury.
Make sure that no body parts are in close
proximity during the opening and closing pro-
cedures.
If somebody becomes trapped: R
release the switch immediately, or R
during automatic operation, push the
switch briefly in any direction
The opening or closing procedure will be stop-
ped.
G WARNING
If children operate the sliding sunroof they
could become trapped, particularly if they are
left unsupervised. 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. ! Only open the sliding sunroof if it is free of
snow and ice. Otherwise, malfunctions may
occur.
Do not allow anything to protrude from the
sliding sunroof. Otherwise, the seals could be
damaged.
! The weather can change abruptly. It could
start to rain or snow. Make sure that the slid-
ing sunroof is closed when you leave the vehi-
cle. The vehicle electronics can be damaged if
water enters the vehicle interior.
Resonance noises can occur in addition to the
usual airflow noises when the sliding sunroof is
open. They are caused by minor pressure fluc-
tuations in the vehicle interior. Change the posi-
tion of the sliding sunroof or open a side window
slightly to reduce or eliminate these noises.
Sliding sunroof reversing feature The sliding sunroof is equipped with an auto-
matic reversing feature. If a solid object blocks
or restricts the sliding sunroof during the closing
process, the sliding sunroof opens again auto-
matically. However, the automatic reversing
feature is only an aid and is not a substitute for
your attentiveness when closing the sliding sun-
roof.90
Sliding sunroof
Opening and closing

G WARNING
The reversing feature does not react: R
to soft, light and thin objects, e.g. small fin-
gers R
over the last 1/6 in (4 mm) of the closing
movement R
during resetting R
when closing the sliding sunroof again man-
ually immediately after automatic reversing
This means that the reversing feature cannot
prevent someone being trapped in these sit-
uations. There is a risk of injury.
Make sure that no body parts are in close
proximity during the closing procedure.
If somebody becomes trapped: R
release the switch immediately, or R
press the switch in any direction during the
automatic closing process
The closing process is stopped.
Operating the sliding sunroof
Opening and closing
C
To raise
D
To open

of the body could be trapped in the closing area in the process. This poses an increased risk of
injury or even fatal injury.
Make sure that no parts of the body are in the closing area.
If somebody becomes trapped: R
release the switch immediately, or R
press the switch in any direction during the automatic closing process
The closing process is stopped.
! If the sliding sunroof still cannot be opened or closed as a result of a malfunction, contact a
qualified specialist workshop.
Problem
Possible causes/consequences and P Solutions
The sliding sunroof can-
not be closed and you
cannot see the cause. If the sliding sunroof is obstructed during closing and reopens again
slightly: X
Immediately after it blocks, pull the W switch down again to the
point of resistance until the sliding sunroof is closed.
The sliding sunroof is closed with increased force.
If the sliding sunroof is obstructed again during closing and then
reopens slightly: X
Immediately after it blocks, pull the W switch down again to the
point of resistance until the sliding sunroof is closed.
The sliding sunroof is closed without the automatic reversing fea-
ture.92
Sliding sunroof
Opening and closing

Correct driver's seat position
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.
Observe the following when adjusting steering
wheel C , seat belt D and driver's seat

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
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 sys-
tem.
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.
! 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 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 head restraints in the front seats are
installed with the NECK-PRO system
( Y
page 55). For this reason, it is not possible
to remove the head restraints from the front
seats.
For more information, contact a qualified spe-
cialist workshop.
i Further related subjects: R
Rear bench seat through-loading feature
( Y
page 245)
Adjusting the seats electrically
C
Head restraint height D
Seat cushion angle

Adjusting the head restraints
Import ant safety notes
G WARNIN G
You could lose control of your vehicl e if you do
th e followin g while driving:R
adjust th e driver's seat , head restraint,
steering whee l or mirror sR
faste n th e seat belt
There is a ris k of an accident.
Adjus t th e driver's seat , head restraint, steer -
ing whee l and mirror and faste n your seat belt
before starting th e engine.
G WARNIN G
If th e head restraints are no t installed or no t
adjusted correctly, they canno t provid e pro -
tection as intended. There is an increased ris k
of injury in th e head and neck area, e.g. in th e
event of an acciden t or when braking .
Always drive wit h th e head restraints instal -
led. Befor e drivin g off , mak e sur e for every
vehicl e occupant that th e center of th e head
restrain t support s th e bac k of th e head at
about eye level.
Do no t rotate th e head restraints of th e fron t and
rear seats. Otherwise , you canno t adjust th e
height and angle of th e head restraints to th e
correc t position .
Using th e fore-and-af t adjustment, adjust th e
head restrain t so that it is as close as possibl e to
your head .
Observ e th e important safet y note s regarding
th e seat s ( Y
page 93). Adjusting the head restraint height
elect ri cally X
Slide switch for head restrain t height adjust -
men t C up or down in th e direction of th e
arrow.
Adjusting the luxury head restraints
X
To adjust th e sid e bolsters of th e hea d
restraint: push or pull right and/o r left-han d
side bolste r C int o th e desired position .X
To adjust th e angle of th e hea d restraint:
push or pull th e head restrain t in th e direction
of arrow D .
i Adjus t th e head restrain t so that th e bac k of
your head is as close to th e head restrain t as
possible.
Rear seat head restraints
Important safety notes
G WARNIN G
Fo r your protection , drive only wit h properly
positioned head restraints .
Adjus t th e head restraints so that they are as
close as possibl e to your head . This willSeats 95
Seats, steering wheel and mirrors Z

reduce the potential for injury to the head and
neck in the event of an accident or similar sit-
uation.
Whenever the rear seats are occupied, only
drive the vehicle with the head restraints
installed and engaged. Head restraints are
intended to help reduce injuries during an
accident.
Adjusting the rear seat head restraint
angle
X
Pull or push the top of the head restraint until
it is in the desired position.
Removing and installing the rear seat
head restraints
G WARNING
If the head restraints are not installed or not
adjusted correctly, they cannot provide pro-
tection 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.
! Make sure that the rear window roller sun-
blind has been retracted before the rear head
restraints are removed. You could otherwise
damage the roller sunblind. The head restraints can only be removed if the
rear seat folds forward. X
To remove: press release catch C and pull
the head restraint out of the guides. X
To re-install: insert the head restraint so that
the notches on the bar are on the left when
viewed in the direction of travel. X
Push the head restraint down until you hear it
engage in position.
Adjusting the multicontour seat The multicontour seat function is only available
for vehicles in Canada.
C
To adjust the thigh cushion
D
To adjust the backrest contour in the lumbar
region

X
Turn the SmartKey to position 2 in the ignition
lock ( Y
page 123).
Adjusting the active multicontour
seat The active multicontour seat is only available for
the driver's side.
You can adjust the active multicontour seat via
the multimedia system (see the Digital Opera-
tor's Manual).
Adjusting the 4-way lumbar support
C
To raise the backrest contourD
To soften the backrest contour

Switching the seat ventilation on/off
Driver's and front-passenger seat
The three blue indicator lamps in the buttons
indicate the ventilation level you have selected. X
Turn the SmartKey to position 1 or 2 in the
ignition lock ( Y
page 123). X
To switch on: press button C repeatedly
until the desired ventilation level is set. X
To switch off: press button C repeatedly
until all the indicator lamps go out.
i If the battery voltage is too low, the seat
ventilation may switch off.
i You can open the side windows and the slid-
ing sunroof using the "Convenience opening"
feature ( Y
page 88). The seat ventilation of
the driver's seat automatically switches to the
highest level.
Problems with the seat heating or seat ventilation Problem
Possible causes/consequences and P Solutions
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 defroster 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 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
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 SmartKey in
the ignition lock.98
Steering wheel
Seats, steering wheel and mirrors