light MERCEDES-BENZ CLS-Class 2017 W218 Service Manual

XMake sure that all the side windows and the
sliding sunroof are closed.
XMake sure that all the side windows are
closed.
XTo interrupt convenience closing:release
the & 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).
XTouch recessed sensor surface :on the
door handle until the side windows and the
sliding sunroof are fully closed.
XTouch recessed sensor surface :on the
door handle until the side windows are fully
closed.
iMake sure you only touch recessed sensor
surface :.
XMake sure that all the side windows and the
sliding sunroof are closed.
XMake sure that all the side windows are
closed.
XTo interrupt convenience closing: release
recessed sensor surface :on the door han-
dle.
Resetting the side windows
If a side window can no longer be closed fully,
you must reset it.
XClose all the doors.
XTurn the SmartKey to position 1or 2in the
ignition lock.
XPull the corresponding switch on the door
control panel until the side window is com-
pletely closed (
Ypage 87).
XHold the switch for an additional second.
If the side window opens again slightly:
XImmediately pull the corresponding switch on
the door control panel until the side window is
completely closed (
Ypage 87).
XHold the switch for an additional second.
XIf 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
GWARNING
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 windows89
Opening and closing
Z

ProblemPossible causes/consequences andMSolutions
A side window cannot be
closed because it is
blocked by objects, e.g.
leaves in the window
guide.XRemove the objects.
XClose 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:
XImmediately 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:
XImmediately after the window blocks, pull the corresponding switchagain until the side window has closed.
The side window is closed without the automatic reversing feature.
Sliding sunroof
Important safety notes
GWARNING
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:
Rrelease the switch immediately, or
Rduring automatic operation, push the
switch briefly in any direction
The opening or closing procedure will be stop- ped.
GWARNING
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.
90Sliding sunroof
Opening and closing

GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small fin-
gers
Rover the last 1/6 in (4 mm) of the closing
movement
Rduring resetting
Rwhen 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:
Rrelease the switch immediately, or
Rpress the switch in any direction during the
automatic closing process
The closing process is stopped.
Operating the sliding sunroof
Opening and closing
:To raise
;To open
=To close/lower
XTurn the SmartKey to position 1or 2in the
ignition lock.
XPress or pull the 3switch in the corre-
sponding direction.
If you press the 3switch beyond the point of
resistance, an automatic opening/closing proc-
ess is started in the corresponding direction.
You can stop automatic operation by pressing/
pulling the switch again. The automatic opening
and raising feature is available only when the
sliding sunroof is closed.
The sun protection cover automatically opens
along with the sliding sunroof. You can open or
close the sun protection cover manually when
the sliding sunroof is raised or closed.
You can continue to operate the sliding sunroof after switching off the engine or removing the
SmartKey from the ignition lock. This function
remains active for five minutes or until you open
a front door.
Resetting
!If the sliding sunroof still cannot be opened
or closed fully after resetting, contact a quali- fied specialist workshop.
Reset the sliding sunroof if it does not move
smoothly.
XTurn the SmartKey to position 2in the ignition
lock.
XRaise the sliding sunroof fully at the rear
(Ypage 91).
XKeep the 3switch pressed for another
second.
XMake sure that the sliding sunroof can be fully opened and closed again (Ypage 91).
XIf this is not the case, repeat the steps above.
Problems with the sliding sunroof
GWARNING
If you close the sliding sunroof again immediately after it has been blocked or reset, the sliding
sunroof closes with increased or maximum force. The reversing feature is then not active. Parts
Sliding sunroof91
Opening and closing
Z

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:
Rrelease the switch immediately, or
Rpress 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.
ProblemPossible causes/consequences and MSolutions
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:
XImmediately after it blocks, pull the3switch 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:
XImmediately after it blocks, pull the 3switch down again to the
point of resistance until the sliding sunroof is closed.
The sliding sunroof is closed without the automatic reversing fea-
ture.
92Sliding sunroof
Opening and closing

Correct driver's seat position
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten 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 :, seat belt ;and driver's seat =:
Ryou are as far away from the driver's air bag as
possible.
Ryou are sitting in a normal upright position.
Ryour thighs are slightly supported by the seat
cushion.
Ryour legs are not entirely stretched and you
can depress the pedals properly.
Rthe back of your head is supported at eye level
by the center of the head restraint.
Ryou can hold the steering wheel with your
arms slightly bent.
Ryou can move your legs freely.
Ryou can see all the displays in the instrument
cluster clearly.
Ryou should have a good overview of traffic
conditions.
Rthe seat belt is pulled snugly against the bodyand is routed across the center of your shoul-
der and across your hips in the pelvic area.
Further related subjects:
RAdjusting the seats electrically (Ypage 94).
RAdjusting the steering wheel electrically
(Ypage 99).
RFastening the seat belt correctly (Ypage 44).
RAdjusting the rear-view mirror and exterior
mirrors (Ypage 101).
RStoring the seat, steering wheel and exterior
mirror settings using the memory function
(
Ypage 104).
Seats
Important safety notes
GWARNING
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.
GWARNING
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.
Observe the safety notes on "Air bags"
(
Ypage 46) and "Children in the Vehicle"
(Ypage 58).
Seats93
Seats, steering wheel and mirrors
Z

GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten 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.
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 sys-
tem.
GWARNING
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:
Rkeep liquids from spilling on the seats. If
liquid is spilled on the seats, dry them as
soon as possible.
Rif 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.
Rclean the seat covers as recommended;
see "Interior care".
Rdo 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.
Rwhen 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.
iThe head restraints in the front seats are
installed with the NECK-PRO system
(
Ypage 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.
iFurther related subjects:
RRear bench seat through-loading feature
(Ypage 245)
Adjusting the seats electrically
:Head restraint height
;Seat cushion angle
=Seat height
?Seat fore-and-aft adjustment
ABackrest angle
iIf PRE-SAFE®is activated and the front-
passenger seat is in an unfavorable position,
it is moved to a better position.
iYou can store the seat settings using the
memory function (Ypage 104).
iVehicles with the through-loading feature: if
you fold down a rear seat backrest, the
respective front seat is moved forwards
slightly if necessary. This prevents the seats
from colliding.
94Seats
Seats, steering wheel and mirrors

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.
XTurn the SmartKey to position1or 2in the
ignition lock (Ypage 123).
XTo switch on: press button:repeatedly
until the desired ventilation level is set.
XTo switch off: press button:repeatedly
until all the indicator lamps go out.
iIf the battery voltage is too low, the seat
ventilation may switch off.
iYou can open the side windows and the slid-
ing sunroof using the "Convenience opening"
feature (
Ypage 88). The seat ventilation of
the driver's seat automatically switches to the
highest level.
Problems with the seat heating or seat ventilation
ProblemPossible causes/consequences and 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.
XSwitch 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
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten 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.
GWARNING
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.
98Steering wheel
Seats, steering wheel and mirrors

Adjusting the steering wheel electri-
cally
:To adjust th esteering whee lheight
;To adjust th esteering whee lposition (fore-
and-af tadjustment)
iFurther relate dsubjects :
REASY-ENTRY/EXIT feature (Ypage 100)
RStoring settings (Ypage 104)
Steering wheel heating
Switching on/off
XTurn th eSmartKey to position 2in th eignition
loc k (Ypage 123).
XTo switch on/off: turnth elever in th edirec -
tion of arrow :or;.
Indicato rlamp =lights up or goes out .
Vehicles without KEYLESS-GO :when you
remove th eSmartKey from th eignition lock, th e
steering whee lheating is deactivated.
Vehicles wit hKEYLESS-GO :when you switch off
th eignition and open th edriver's door ,th e
steering whee lheating is deactivated.
iThe steering whee lheating may switch off
temporarily if:
Rth etemperature in th evehicl einterior is
abov e86 ‡(30 †)
Rthetemperature of th esteering whee lis
abov e95 ‡(35 †)
Indic ator lamp =remains on.
Problems with the steering wheel heating
ProblemPossible causes/consequences and MSolutions
The steering wheel heat-
ing has switched off pre-
maturely or cannot be
switched on.The on-board voltage is too low because too many electrical consum-
ers are switched on.
XSwitch off electrical consumers that you do not need, such as the
rear window defroster or interior lighting.
Once the battery is sufficiently charged, the steering wheel heating
will switch back on automatically.
Steering wheel99
Seats, steering wheel and mirrors
Z

Mirrors
Exterior mirrors
Adjusting the exterior mirrors
GWARNING
You could lose control of your vehicle if you do the following while driving:
Radjust the driver's seat, head restraint,
steering wheel or mirrors
Rfasten 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.
GWARNING
The exterior mirror on the front-passenger
side reduces the size of the image. Visible
objects are actually closer than they appear.
This means that you could misjudge the dis-
tance from road users traveling behind, e.g.
when changing lane. There is a risk of an acci-
dent.
For this reason, always make sure of the
actual distance from the road users traveling
behind by glancing over your shoulder.
XTurn the SmartKey to position 1or 2in the
ignition lock (Ypage 123).
XPress button :for the left exterior mirror or
button ;for the right exterior mirror.
The indicator lamp in the corresponding but-
ton lights up in red.
The indicator lamp goes out again after some time. You can adjust the selected exterior mirror using button
=as long as the indicator
lamp is lit.
XPress button =up, down, or to the right or
left until you have adjusted the exterior mirror to the correct position. You should have a
good overview of traffic conditions.
The convex exterior mirrors provide a larger field
of vision.
After the engine has been started, the exterior
mirrors are automatically heated if the rear win-
dow defroster is switched on and the outside
temperature is low. Heating takes a maximum of
ten minutes.
iYou can also heat up the exterior mirrors
manually by switching on the rear window
defroster.
Folding the exterior mirrors in or out
electrically
XTurn the SmartKey to position 1or 2in the
ignition lock (Ypage 123).
XBriefly press :.
Both exterior mirrors fold in or out.
iMake sure that the exterior mirrors are
always folded out fully while driving. They
could otherwise vibrate.
iIf you are driving faster than 30 mph
(47 km/h), you can no longer fold in the exte-
rior mirrors.
Resetting the exterior mirrors
If the battery has been disconnected or com-
pletely discharged, the exterior mirrors must be
reset. The exterior mirrors will otherwise not
fold in when you switch on the "Fold in mirrors
when locking" function in the on-board com-
puter (
Ypage 200).
Mirrors101
Seats, steering wheel and mirrors
Z

XTurn the SmartKey to position1in the ignition
lock (Ypage 123).
XBriefly press :.
Folding the exterior mirrors in or out
automatically
If the "Fold in mirrors when locking" function is
activated in the on-board computer
(
Ypage 200):
Rthe exterior mirrors fold in automatically as
soon as you lock the vehicle from the outside.
Rthe exterior mirrors fold out again automati-
cally as soon as you unlock the vehicle and
then open the driver's or front-passenger
door.
iIf the exterior mirrors have been folded in
manually, they do not fold out.
Exterior mirror pushed out of position
If an exterior mirror has been pushed out of
position, proceed as follows:
XVehicles without electrically folding exte-
rior mirrors: manually move the exterior mir-
ror into the correct position.
XVehicles with electrically folding exterior
mirrors: press and hold button :until you
hear a click and then the mirror engaging in
position (
Ypage 101).
The mirror housing is engaged again and you
can adjust the exterior mirrors as usual
(
Ypage 101).
Automatic anti-glare mirrors
GWARNING
Electrolyte may escape if the glass in an auto-
matic anti-glare mirror breaks. The electrolyte
is harmful and causes irritation. It must not
come into contact with your skin, eyes, res-
piratory organs or clothing or be swallowed.
There is a risk of injury.
If you come into contact with the electrolyte,
observe the following:
RRinse off the electrolyte from your skin
immediately with water.
RImmediately rinse the electrolyte out of
your eyes thoroughly with clean water.
RIf the electrolyte is swallowed, immediately
rinse your mouth out thoroughly. Do not
induce vomiting.
RIf electrolyte comes into contact with your
skin or hair or is swallowed, seek medical
attention immediately.
RImmediately change out of clothing which
has come into contact with electrolyte.
RIf an allergic reaction occurs, seek medical
attention immediately.
The exterior mirror on the driver's side and the
rear-view mirror automatically go into anti-glare
mode if:
Rthe ignition is switched on and
Rincident light from headlamps strikes the sen-
sor in the rear-view mirror
The mirrors do not go into anti-glare mode if
reverse gear is engaged or if the interior lighting
is switched on.
Parking position for the exterior mir-
ror on the front-passenger side
Setting and storing the parking position
You can set the front-passenger side exterior
mirror such that you can see the rear wheel on
that side as soon as you engage reverse gear.
You can store this position.
102Mirrors
Seats, steering wheel and mirrors