2014 MERCEDES-BENZ CLS ignition

ProblemPossible causes/consequences andSolutions
The engine cannot be
started using the
SmartKey.
The on-board voltage is too low.
XSwitch off non-essential consumers, e.g. seat heating or interior
lighting, and try to start the engine again.
If this does not work:
XCheck the starter battery and charge it if necessary
(Ypage 324).
or
XJump-start the vehicle (Ypage 326).
or
XConsultaqualified specialist workshop.
The engine cannot be
started using KEYLESS-
GO. The SmartKey is in
the vehicle.
Adoor is open. Therefore, the SmartKey cannot be detected as
easily.
XClose the door and try to start the vehicle again.
There is interferencefromapowerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
Doors
Important safety notes
GWARNING
If children are left unsupervised in the vehicle,
they could:
Ropen the doors, thus endangering other
people or road users.
Rget out and disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicle in
motion if, for example, they:
Rrelease the parking brake.
Rshiftingthe automatic transmission out of
park positionP
RStart the engine.
There isarisk of an accident and injury.
When leaving the vehicle, alwaystake the
SmartKey with you and lock the vehicle. Never
leave children or animals unattended in the
vehicle. Always keep the SmartKey out of
reach of children.
GWARNING
If persons, particularly children are subjected
to prolonged exposure to extreme heat or
cold, there isarisk of injury, possibly even
fatal. Never leave children unattended in the
vehicle.
Unlocking and opening doors from
the inside
You can openadoor from inside the vehicle
even if it has been locked. If the vehicle has
been locked with the SmartKey or with
KEYLESS-GO, openingadoor from the inside
will trigger the anti-theft alarm system.
Switch off the alarm (Ypage 74).
You can only open the rear doors from inside
the vehicle if they are not secured by the
child-proof locks (Ypage 65).
82Doors
Opening and closing

XTo unlockafrontdoor:pull door
handle.
Locking knobpops up.
The door is unlockedand can be opened.
XTo openafrontdoor:pull door
handle.
XTo unlockarear door:pull up locking
knob.
The door is unlockedand can be opened.
XTo openarear door:pull door handle.
Centrally lockingand unlockingthe
vehicle from the inside
Youcan centrallylockorunlock the vehicle
from the inside.
XTo unlock:press button.
XTo lock:press button.
If allthe doors areclosed,the vehiclelocks.
Meanwhile, the fuel fillerflap will not be
locked or unlocked.
You cannot unlockthe vehicle centrally from
the insideifthe vehicle has been locked with
the SmartKey or KEYLESS-GO.
You can openadoor frominside the vehicle
evenifithas been locked.
You can only open therear doorsfrominside
thevehicle if they are notsecured by the
child-proof locks (Ypage 65).
If the vehicle has been locked using the
lockingbutton for the central locking, or has
been locked automatically, andadoor is
opened from the inside:
Rthe vehicle will be fully unlocked if it had
previously been fully unlocked
Ronly the door which has been opened form
the inside is unlocked if only the driver's
door had been previously unlocked
Automatic locking feature
XTo deactivate:press and hold button
for about five seconds untilatonesounds.
XTo activate:press and hold buttonfor
about five seconds untilatonesounds.
iIf you press one of the two buttonsand
do not hearatone, the relevant setting has
already been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are
turning.
Doors83
Opening and closing
Z

blocksorrestrictsaside window during the
closingprocess, the side window opens again
automatically. However,the automatic
reversing feature is only an aid and does not
relieve you of the responsibility of paying
attention when closingaside window.
GWARNING
The reversing feature does not react:
Rto soft,light and thin objects, e.g. small
fingers
Rover the last4mmofthe closing movement
Rduring resetting
Rwhen closing the side window again
manually immediately after automatic
reversing
This means that the reversing feature cannot
prevent someone being trapped in these
situations. There isarisk of injury.
Make sure that no body parts are in close
proximity during the closing procedure. If
someone becomes trapped, press the switch
to open the side window again.
Opening and closing the side
windows
The switches for all side windows are located
on the driver's door. There is alsoaswitch on
each door for the corresponding side window.
The switches on the driver's door take
precedence.
Front left
Front right
$Rear right
!Rear left
XTurn the SmartKey to position1or2in the
ignition lock.
XTo open:press the corresponding switch.
XTo close:pull the corresponding switch.
iIf you press the switch beyond the point
of resistance, an automatic opening/
closing process is started in the
corresponding direction. You can stop
automatic operation by operating the
switch again.
iYou can continue to operate the side
windows after you switch off the engine or
remove the SmartKey. This function is
available for up to five minutes or until the
driver's or front-passenger door is opened.
iWhen the override feature for the side
windows is activated (Ypage 65), the side
windows cannot be operated from the rear.
Convenienceopening
General notes
You can ventilate the vehicle before you start
driving. To do this, the SmartKey is used to
carry out the following functions
simultaneously:
Runlock the vehicle
Ropen the side windows
Ropen the sliding sunroof
Rswitch on the seat ventilation for the
driver's seat
iThe convenience opening feature can
only be operated using the SmartKey. The
SmartKey must be close to the driver's
door handle.
Side windows89
Opening and closing
Z

XTouch recessed sensor surfaceon the
door handle until the side windows and the
sliding sunroof are fully closed.
iMake sure you only touch recessed
sensor surface.
XMake sure that all the side windows and the
sliding sunroof are closed.
XTo interrupt convenience closing:
release recessed sensor surfaceon the
door handle.
Resetting the side windows
Ifaside window can no longer be closed fully,
you must reset it.
XClose all the doors.
XTurn the SmartKey to position1or2in the
ignition lock.
XPull the corresponding switch on the door
control panel until the side window is
completely closed (Ypage 89).
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 89).
XHold the switch for an additional second.
XIf the corresponding side window remains
closed after the button has been released,
the side window has been reset correctly.
If this is not the case, repeat the steps
above again.
Side windows91
Opening and closing
Z

Do not allowanything to protrude fromthe
sliding sunroof. Otherwise, the seals could
be damaged.
!The weather can change abruptly. It could
start to rain or snow. Make sure that the
sliding sunroof is closed when you leave the
vehicle. The vehicle electronicscan be
damaged if water enters the vehicle
interior.
iResonance noises can occur in addition
to the usualairflow noises when the sliding
sunroof is open. They are caused by minor
pressure fluctuations in the vehicle interior.
Change the position of the sliding sunroof
or openaside window slightly to reduce or
eliminate these noises.
Sliding sunroof reversing feature
The sliding sunroof is equipped with an
automatic reversing feature. Ifasolid object
blocks or restrictsthe sliding sunroof during
the closing process, the sliding sunroof opens
again automatically.However, the automatic
reversing feature is only an aid and does not
relieve you of the responsibility of paying
attention when closing the sliding sunroof.
GWARNING
The reversing feature does not react:
Rto soft, light and thin objects, e.g. small
fingers
Rover the last4mmofthe closing movement
Rduring resetting
Rwhen closing the sliding sunroof again
manually immediately after automatic
reversing
This means that the reversing feature cannot
prevent someone being trapped in these
situations. There isarisk 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
Rduring automatic operation, push the
switch briefly in any direction
The closing process is stopped.
Operating the sliding sunroof
Opening and closing
Overhead control panel
To raise
To open
$To close/lower
XTurn the SmartKey to position1or2in the
ignition lock.
XPress or pull theswitch in the
corresponding direction.
iIf you press theswitch beyond the
point of resistance, an automatic opening/
closing process is started in the
corresponding direction. You can stop
automatic operation by operating the
switch again.
iThe 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.
iYou can continue to operate the sliding
sunroof after switching off the engine or
Sliding sunroof93
Opening and closing
Z

removing the SmartKey from the ignition
lock. This function remains active for five
minutes or until you openafront door.
Resetting
!If the sliding sunroof still cannot be
opened or closed fullyafter resetting,
contactaqualified specialist workshop.
Reset the sliding sunroof if it does not move
smoothly.
XTurn the SmartKey to position2in the
ignitionlock.
XRaise the sliding sunroof fully at the rear
(Ypage 93).
XKeep theswitch pressed for another
second.
XMake sure that the sliding sunroof can be
fully opened and closed again (Ypage 93).
XIf this is not the case, repeat the steps
above again.
94Sliding sunroof
Opening and closing

Adjusting therearseat headrestraint
angle
XPull or push thetopof thehead restraint
until it is in thedesired position.
Removing and installing therearseat
headrestraints
GWARNING
If head restraints are not installedand
adjusted correctly, they cannot provide
protection as intended. Thereisanincreased
risk of injury in thehead and neckarea, e.g.
in theeventofanaccidentorwhen braking.
Always drivewith thehead restraints
installed. Before driving off,makesure for
everyvehicle occupant that thecenter of the
head restraintsupports theback of thehead
at about eye level.
!Makesure that therear window roller
sunblindhas been retractedbefore the rear
head restraintsare removed. You could
otherwise damage the roller sunblind.
XTo remove:pull the head restraint up to
the stop.
XPress release catchand pull the head
restraint out of the guides.
XTo re-install:insert the head restraint so
that the notches on the bar are on the left
when viewed in the direction of travel.
XPush 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.
To adjust the thigh cushion
To adjust the backrest contour in the
lumbar region
$To adjust the backrest contour in the
upper back region
!To adjust the side bolsters of the seat
backrest
You can adjust the contour of the frontseats
individually so as to provide optimum support
for your back and sides.
XTurn the SmartKey to position2in the
ignition lock (Ypage 147).
102Seats
Seats, steering wheel and mirrors

You can adjust the contour of the front seat
backrestsindividually to provide optimum
support for your back.
Switchingtheseat heating on/off
Activating/deactivating
GWARNING
Repeatedly switching on the seat heatingcan
cause the seat cushionand backrestpads to
become veryhot.The health of persons with
limited temperature sensitivity oralimited
ability to react to excessively high
temperatures may be affected or they may
even suffer burn-like injuries. There isarisk
of injury.
Therefore, do not switch the seat heating on
repeatedly.
Driver's and front-passenger seat
The three red indicator lamps in the button
indicate the heating level you have selected.
The system automatically switches down
from level3to level2after approximately
eight minutes.
The system automatically switches down
from level2to level1after approximately ten
minutes.
The system automatically switches off
approximately 20 minutes after it is set to
level1.
XTurn the SmartKey to position1or2in the
ignition lock (Ypage 147).
XTo switch on:press buttonrepeatedly
until the desired heating level is set.
XTo switch off:press buttonrepeatedly
until all the indicator lamps go out.
iIf the battery voltage is too low, the seat
heating may switch off.
104Seats
Seats, steering whee la nd mirrors