2018 MERCEDES-BENZ CLA COUPE ignition

You should therefore adapt your drivingstyle
to the differenth andlingcharacteristics. Have
the brakes ystemchecked at aqualified spe-
cialist workshop.
Please observet he information on warnin gand
indicator lamps (
Ypage 220)
(
Ypage 220) as well as on display messages
(Ypage 194).
ADAPTIVE BRAKE
ADAPTIVE BRAKE enhances braking safetya nd
offers increased braking comfort.Ina ddition to
the braking function ,ADA PTIVE BRAKE also has
the HOLDf unction (
Ypage 157) and hill start
assist (Ypage 125).
STEER CONTROL
Genera linformation
STEER CONTROL helps you by transmitting a
noticeable steeringf orcetothe steeringw heel
in the direction required for vehicle stabilization.
This steeringa ssistanceisprovided in particular
if:
Rboth right wheels or both left wheels are on a
wet or slippery road surfacew hen you brake
Rthe vehicle begins to skid
Important safetynotes
iObserve the "Importan tsafetyn otes" sec-
tion (Ypage 61).
No steeringa ssistanceisprovided from STEER
CONTROL, if:
RESP®is malfunctioning
Rthe steeringism alfunctioning
If ESP®is malfunctioning, you will be assisted
further by the electrical power steering.
Protection against theft
Immobilizer
The immobilizer prevent syour vehicle from
being started without the correctS martKey.
XTo activatewith theSmartKey: remove the
SmartKey from the ignition lock.
XTo activatew ith KEYLESS-GO start-func-
tion or KEYLESS-GO: switchthe ignition off
and open the driver's door.
XTo deactivate: switchont he ignition.
When leaving the vehicle, always tak ethe
SmartKey with you and lock the vehicle. Anyone
can star tthe engin eifavalid SmartKey has been
left inside the vehicle.
iThe immobilizer is always deactivate dwhen
you star tthe engine.
In the eventt hat the engin ecannot be started
(yet the vehicle's battery is charged), the sys-
tem is not operational. Contact an authorized
Mercedes-Ben zCenter or call
1-800-FOR-MERCedes (in the USA )or
1-800-387-0100( in Canada).
ATA (anti-theft alarms ystem)
XTo arm:lock the vehicle with the SmartKe yor
KEYLESS-GO.
Indicator lamp :flashes. The alarm system
is armed after approximately 15 seconds.
XTo disarm: unlock the vehicle with the Smart-
Key or KEYLESS-GO.
or
XInsert the SmartKe yintot he ignition lock.
Av isual and audible alarm is triggered if the
alarm system is armed and you open:
Rad oor
Rthe vehicle with the mechanical key
Rthe trun klid
Rthe hood
68Protection against theft
Safety

XTo turn the alarm off with the SmartKey:
press the%or& button on the Smart-
Key.
The alarm is stopped.
or
XVehicles with KEYLESS-GO start-function
or KEYLESS-GO: remove the Start/Stop but-
ton from the ignition lock (
Ypage 122).
XInsert the SmartKey into the ignition lock.
The alarm is stopped.
XTo stopt he alarm using KEYLESS-GO:
grasp the outsid edoorh andle. The SmartKey
must be outsid ethe vehicle.
The alarm is stopped.
or
XPress the Start/Stop button on the dash-
board .The SmartKey must be insid ethe vehi-
cle.
The alarm is stopped.
The alarm is not switched off, eve nifyouclose
the open door thatt riggered it, for example.
iIf the alarm continue sfor more than
30 seconds ,the mbrace emergency cal lsys-
tem automaticall ynotifie sthe Customer
Assistance Center. Thi sisdonee ither by text
message or data connection.
The emergency cal lsystem send sthe mes-
sage or data provided that:
Ryo uh aves ubscribed to the mbrace service.
Rthe mbrace service hasb eena ctivated
properly.
Rthe necessary mobil ephone network is
available.
Protectiona gainsttheft69
Safety
Z

SmartKey
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.
Rshifting the automatic transmission out of
park position P
RStart the engine.
There is arisk of an accident and injury.
When leaving the vehicle, always take 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 you attach heavy or large object stothe
SmartKey, the SmartKey could be uninten-
tionally turned in the ignition lock. This could
cause the engine to be switched off. There is a risk of an accident.
Do not attach any heavy or large object stothe
SmartKey. Remove any bulky key rings before
insertingt he SmartKey into the ignition lock.
!Keep the SmartKey away from stron gmag-
netic fields. Otherwise, the remote control
function could be affected.
Strong magnetic fields can occur in the vicin-
ity of powerful electrical installations.
Do not keep the SmartKey:
Rwith electronic devices, e.g. amobile phone
or another SmartKey.
Rwith metallic objects, e.g. coins or metal foil.
Rinside metallic objects, e.g. ametal case
Vehicles with KEYLESS-GO startf unction:do
not keep the SmartKey in the trunk.O therwise,the SmartKey may not be detected, e.g. when
startin
gthe engine using the Start/Stop button.
SmartKey functions
:& To lock the vehicle
;FTo open the trunk lid
=%To unlock the vehicle
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
Rthe vehicle is locked again.
Ranti-theft protection is reactivated.
XTo lock: press the &button.
The SmartKey centrally locks/unlocks:
Rthe doors
Rthe trunk lid
Rthe fuel filler flap
The turn signals flash once when unlocking and
three times when locking.
When the locator lighting is activated via the
multimedia system, it lights up when it is dark
after the vehicle is unlocked with the remote
control (see the separate operating instruc-
tions).
You can also set an audible signal to confirm
that the vehicle has been locked. The audible
signal can be activated and deactivated using
the on-board computer (
Ypage 187).
XTo open the trunk lid automatically: press
and hold the Fbutton until the trunk lid
opens (
Ypage 79).
70SmartKey
Opening and closing

KEYLESS-GO
Gene raln otes
Bear in min dthatthe engin ecan be started by
any of th evehicl eoccupant sifthere is aSmart-
Key in th evehicle.
Lockin gand unlocking
You can start ,loc koru nlockthe vehicl eusing
KEYLESS-GO .Todothis, you only need carry th e
SmartKey wit hyou. You can combine th efunc-
tion sofK EYLESS-GO wit hthose of aconven-
tional SmartKey. Unloc kthe vehicl ebyu sing
KEYLESS-GO ,for instance ,and loc kitusingthe
& buttonont heSmartKey.
The driver's door and th edoor at whic hthe han -
dle is used ,mustb othbec losed. The SmartKey
mus tbeo utside th evehicle. Whe nlocking or
unlocking wit hKEYLESS-GO ,the distanc e
between th eSmartKey and th ecorre sponding
door handle mus tnotbe greate rtha nt hree fee t
(on em eter).
Ac heck whichperiodically establishes aradi o
connection between th evehicl eand th eSmart-
Key determine swhether avalid SmartKey is in
th ev ehicle. This occurs, for example:
Rwhen starting th eengine
Rwhile drivin g
Rwhen usingHANDS-F REEA CCESS
Rwhen th eexternal door handles are touched
Rduring convenience closin g
XTo unlock thevehicle: touch th einner sur -
fac eoft hedoor handle.
XTo lock th evehicle: touch sensor surfac e:
or ;. Mak
esuret haty ou do no ttou ch th einner
surfac eofthedoor handle.
XConvenienc eclosin gfeature: touch
recessed sensor surfac e; for an extended
period.
Further information on th econveni ence clos-
ing feature (
Ypage 83).
XTo unlock th etrunk lid :pull trunk lid han -
dle :.
Deactivating and activating
If you do no tinten dtou se thevehicl efor alon -
ger period of time, you can deactivat eKEYLESS -
GO. The SmartKey will then use ver ylittl ep ower,
thereby conserving battery power. Fo rthe pur-
poses of activation/deactivation ,the vehicl e
mus tnotbe nearby.
XTo deactivate: press the& buttonont he
SmartKey twice in rapi dsuccession .
The battery chec klamp of th eSmartKey
flashes twice briefl yand lights up once ,the n
KEYLESS-GO is deactivated (
Ypage 73).
XTo activate:press any butto nontheSmart -
Key.
or
XInser tthe SmartKey int othe ignition lock.
KEYLESS-GO and all of it sassociated features
are available again .
KEYLESS-GOstartfun ction
Gene raln otes
Bear in min dthatthe engin ecan be started by
any of th evehicl eoccupant sifthere is aSmart-
Key in th evehicle.
SmartKey71
Opening and closing
Z

Changing thesettings of th elocking
system
You can chang ethe settings of th elockin gsys-
tem. This mean sthato nlyt he driver'sd oor and
th ef uel fille rflap are unlocked when th evehicle
is unlocked. This is useful if you frequently travel
on your own.
XTo change th esetting: pressand hold the
% and& buttons simultaneouslyf or
approximately six seconds until th ebattery
indicator lamp flashes twice (
Ypage 73).
If th esettin goft helockin gsystem is changed
within th esignal range of th evehicle ,pressing
the & or% button:
Rlocks or
Runlock sthe vehicle
The SmartKey no wfunctionsasf ollows:
XTo unlock:pressthe % buttononce.
XTo unlock centrally: pressthe % button
twice.
XTo lock centrally: pressthe & button.
The KEYLESS-GO function is changed as fol-
lows:
XTo unlock th edriver's door: touch theinner
surface of th edoor handle on th edriver's
door.
XTo unlock centrally: touch theinner surface
of th edoor handle on th efront-pa ssenger
door or th erear door.
XTo lock centrally: touch theouter sensor
surface on oneoft hedoor handles.
XTo restor ethe factor ysettings: pressand
hold the %and& buttons simultane-
ously for approximately six seconds until the
battery check lamp flashes twi ce
(
Ypage 73).
Mechanica lkey
General notes
If th evehicle can no longer be locke dor
unlocked witht heSmartKey or KEYLESS-GO,
use th emechanical key.
If you use th emechanical ke ytou nlock and
open th edriver'sd oor or th etrunk lid, th eanti-
theft alarm system will be triggered (
Ypage 68). Therea
re several ways to tur noff th ealarm:
XTo deactivat ethe alarm with th ekey: press
the % or& buttonont hekey.
or
XInsertt heSmartKey int othe ignition lock.
or
XTo deactivat ethe alarm with KEYLESS-GO:
pres sthe Start/Sto pbutto nint heignition
lock. The SmartKey must be in th evehicle.
or
XLockoru nlock thevehicle usingK EYLESS-
GO. The SmartKey must be outside th evehi-
cle.
If you unlock th evehicle usingt hemechanical
key, th efuel fille rflap will no tbeunlocked auto-
matically.
XTo unlock th efuelfille rflap: insert the
SmartKey int othe ignition lock.
Removing th emechanica lkey
XPush release catch :in th edirection of the
arrow and at th esame tim eremove mechan-
ical key ;from th eSmartKey.
For further informatio nabout:
RUnlockin gthe driver'sd oor (Ypage 77)
RUnlockingthe trunk (Ypage 81)
RLockin gthe vehicle (Ypage 77)
Insertin gthe mechanica lkey
XPush mechanical key ;completely int othe
SmartKey until it engages and release
catch :is back in its basic position.
72SmartKey
Opening and closing

ProblemPossible causes/consequences andMSolutions
KEYLESS-GO is malfunctioning.
XLock/unlock the vehicle using the remote control function of the
SmartKey.
XHave the vehicle and SmartKey checked at aqualified specialist
workshop.
If the vehicle can also not be locked/unlocked using the remote con-
trol function:
XUnlock (Ypage 77) or lock (Ypage 77) the vehicle using the
mechanical key.
XHave the vehicle and SmartKey checked at aqualified specialist
workshop.
The engine cannot be
started using the Smart-
Key.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 278).
or
XJump-start the vehicle (Ypage 278).
or
XConsult aqualified specialist workshop.
The engine cannot be
started using the Start/
Stop button. The Smart-
Key is in the vehicle.The vehicle is locked.
XUnlock the vehicle and try to start the vehicle again.
The SmartKey battery is discharged or nearly discharged.
XCheck the SmartKey battery (Ypage 73) and replace it if necessary
(Ypage 73).
If this does not work:
XStart your vehicle with the SmartKey in the ignition lock.
There is interference from apowerful source of radio waves.
XStart your vehicle with the SmartKey in the ignition lock.
You have lost aSmart-
Key.XHave the SmartKey deactivated at aqualified specialist workshop.
XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
You have lost the
mechanical key.XReport the loss immediately to the vehicle insurers.
XIf necessary, have the locks changed as well.
SmartKey75
Opening and closing
Z

Meanwhile, the fuel filler flap will not be locked
or unlocked.
You cannot unlock the vehicle centrally from the
inside if the vehicle has been locked with the
SmartKey or KEYLESS-GO.
You can openadoor from inside the vehicle
even if it has been locked. You can open the rear
doors from inside the vehicle unless they are
secured by the child-proof lock (
Ypage 60).
If the vehicle has previously been locked with
the SmartKey from the outside, opening adoor
from the inside will trigger the anti-theft alarm
system. Switch off the alarm (
Ypage 68).
If al ocked door is opened from the inside, the
previous unlock status of the vehicle will be
taken into consideration if:
Rthe vehicle was locked using the locking but-
ton for the central locking, or
Rif the vehicle was locked automatically
The vehicle will be fully unlocked if it had previ-
ously been fully unlocked. If only the driver's
door had been previously unlocked, only the
door which has been opened from the inside is
unlocked.
Automatic lockingf eature
XTo deactivate:press and hold button :for
approximately five seconds until atone
sounds.
XTo activate: press and hold button ;for
approximately five seconds until atone
sounds.
If you press one of the two buttons and do not
hear atone, the relevant settin ghas already
been selected.
The vehicle is locked automatically when the
ignition is switched on and the wheels are turn-
ing. You could therefore lock yourself out if:
Rthe vehicle is being pushed
Rthe vehicle is being towed
Rthe vehicle is on
aroller dynamometer
You can also switch the automatic locking func-
tion on and off using the on-board computer
(
Ypage 187).
Unlocking the driver's door (mechan-
ical key)
If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO,
use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door, the anti-theft alarm sys-
tem will be triggered. Switch off the alarm
(
Ypage 68).
XTake the mechanical key out of the SmartKey
(Ypage 72).
XInsert the mechanical key into the lock of the
driver's door as far as it will go.
XTurn the mechanical key counter-clockwise
as far as it will go to position 1.
The door is unlocked.
XTurn the mechanical key back and remove it.
XInsert mechanical key into the SmartKey
(Ypage 72).
Locking the vehicle (mechanical key)
If the vehicle can no longer be locked with the
SmartKey or KEYLESS-GO, use the mechanical
key.
XOpen the driver's door.
XClose the front-passenger door, the rear
doors and the trunk lid.
Doors77
Opening and closing
Z

body becomes trapped, release the switch or
pull the switch to close the side window again.
GWARNING
While closingt he side windows, body parts in
the closinga rea could become trapped. There
is ar isk of injury.
When closingm ake sure that no parts of the
body are in the closinga rea. If somebody
becomes trapped, release the switch or press
the switch to open the side window again.
GWARNING
If children operate the side windows they
could become trapped, particularly if they are left unsupervised. There is arisk of injury.
Activat ethe override feature for the rear side
windows. When leaving the vehicle, always
take the SmartKey with you and lock the vehi-
cle. Never leave children unsupervised in the
vehicle.
Side window reversing feature
The side windows are equipped with an auto-
matic reversing feature. If asolid objec tblocks
or restrictsas ide window from traveling
upwards during the automatic closingp rocess,
the side window opens again automatically. Dur-
ing the manual closingp rocess, the side window
only opens again automatically after the corre-
spondin gswitch is released. The automatic
reversing feature is only an aid and is no substi-
tute for your attention when closingas ide win-
dow.
GWARNING
The reversing feature does not react:
Rto soft,l ight and thin objects, e.g. small fin-
gers
Rwhile resetting
This means that the reversing feature cannot
prevents omeoneb eing trapped in these sit-
uations. There is arisk of injury.
Make sure that no body parts are in close
proximity during the closingp rocedure. If
someonebecomes trapped, press the switch
to open the side window again.
Opening and closing the side win-
dows
The switches for all side windows are located on the driver'sd oor. There is also aswitch on each
door for the correspondin gside window.
The switches on the driver'sd oor take prece-
dence.
:Frontl eft
;Frontr ight
=Rear right
?Rear left
XTurn the SmartKey to position 1or2 in the
ignition lock (Ypage 122).
XTo open manually: press and hold the cor-
responding switch.
XTo open fully: press the switch beyond the
pressure point and release it.
Automatic operation is started.
XTo close manually: pull the corresponding
switch and hold it.
XTo close fully: pull the switch beyond the
pressure point and release it.
Automatic operation is started.
XTo interrupt automatic operation: press/
pull the correspondin gswitch again.
iIf you press/pull the switch beyond the
point of resistance, automatic operation is
started in the correspondin gdirection. You
can stop automatic operation by pressing/
pulling the switch again.
iYou can continue to operate the side win-
dows after you switch off the engin eor
removet he SmartKey. This function remains
82Side windows
Opening and closing