2018 MERCEDES-BENZ CLA COUPE door lock

GWARNING
If the child restraint system is subjected to
direct sunlight, parts may get very hot. Chil-
dren may burn themselves on these parts,
particularl yonthe metal parts of the child
restraint system. There is arisk of injury.
If you leave the vehicle, taking the child with
you ,alway sensure that the child restraint
system is not exposedtod irect sunlight. Pro-
tect it with ablanket, for example. If the child
restraint system has been exposedtod irect
sunlight, let it cool downb efore securing the
child in it. Never leave children unattended in
the vehicle.
Child-proof locks for the rear doors
You secure each door individually with the child-
proof locks on the rear doors. Adoor secured
with achild-proof lock cannot be opened from
insid ethe vehicle. When the vehicleisu nlocked,
the door can be opened from the outside.
XTo activate: press the child-proof lock lever
up in the direction of arrow :.
XMake sure that the child-proof locks are work-
ing properly.
XTo deactivate: press the child-proof lock
leverd ownint he direction of arrow ;.
Override feature for the rear side win-
dows
XTo activate/deactivate: press button:.
If indicator lamp ;is lit, operation of the rear
side windows is disabled. Operation is only
possible using the switches in the driver's
door. If indicator lamp ;is off, operation is
possible using the switches in the rear com-
partment.
Pets in the vehicle
GWARNING
If you leave animals unattended or unsecured
in the vehicle, they coul dpress buttons or
switches, for example.
As aresult, they could:
Ractivate vehiclee quipment and become
trapped, for example
Ractivate or deactivate systems ,thereby
endangering other road users
Unsecure danimals coul dalsobef lung around
the vehicleint he event of an accident or sud-
den steering or braking, thereby injuring vehi-
cle occupants. There is arisk of an accident
and injury.
Never leave animals unattended in the vehi-
cle. Always secure animals properly during
the journey ,e.g. use asuitable anima ltrans-
port box.
60Pets in the vehicle
Safety

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

Problems with the SmartKey
ProblemPossible causes/consequences andMSolutions
You cannot lock or
unlock the vehicle using
the SmartKey.The SmartKey battery is discharged or nearly discharged.
XVehicles without KEYLESS-GO or KEYLESS-GO startf unction:
try again to lock/unlock the vehicle using the remote control func-
tion of the SmartKey. Point the tip of the SmartKey at the driver's
door handle from close range and press the %or& button.
If this does not work:
XCheck the SmartKey battery (Ypage 73) and replace it if necessary
(Ypage 73).
XUnlock (Ypage 77) or lock (Ypage 77) the vehicle using the
mechanical key.
There is interference from apowerful source of radio waves.
XVehicles without KEYLESS-GO or KEYLESS-GO startf unction:
try again to lock/unlock the vehicle using the remote control func-
tion of the SmartKey. Point the tip of the SmartKey at the driver's
door handle from close range and press the %or& button.
If this does not work:
XUnlock (Ypage 77) or lock (Ypage 77) the vehicle using the
mechanical key.
The SmartKey is faulty.
XUnlock (Ypage 77) or lock (Ypage 77) the vehicle using the
mechanical key.
XHave the SmartKey checked at aqualified specialist workshop.
You can no longer lock or
unlock the vehicle using
KEYLESS-GO.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:
XUnlock (Ypage 77) or lock (Ypage 77) the vehicle using the
mechanical key.
There is interference from apowerful source of radio waves.
XUnlock (Ypage 77) or lock (Ypage 77) the vehicle using the
mechanical key.
74SmartKey
Opening and closing

Doors
Important safet ynotes
GWARNING
If children are lef tunsupervised in th evehicle,
they could:
Rope nthe doors ,thu se ndangerin gother
people or road users.
Rget out and disrup ttraffic .
Roperat ethe vehicle' sequipment.
Additionally, children could set th evehicle in
motion if, fo rexample, they:
Rrelease th eparking brake .
Rshiftingthe automatic transmissio nout of
par kposition P
RStart th eengine.
There is ariskofana ccidentand injury.
Whe nleavin gthe vehicle, always take th e
SmartKey wit hyou and loc kthe vehicle. Never
leav echildren or animals unattended in th e
vehicle. Always keep th eSmartKey out of
reach of children .
You should preferably plac eluggage or load sin
th ec argo compartment. Observ ethe loadin g
guidelines (
Ypage 237).
Unlockingand opening doors from
th ei nside
!
The sid ewindows will no topen/close if th e
battery is discharged or if th esidew indows
hav eicedu p. It will then no tbepossible to
close th edoor. Do no tattemp ttoforce the
doo rclosed. You could otherwise damage th e
doo rort hesidew indow.
Whe nad ooriso pened, th esidew indow on that
sid eo pens slightly. Whe nthe doo risc losed, th e
sid ew indow close sagain .
XTo unlock an dopenaf ront door: pull door
handle ;.
If th edoorisl ocked, locking knob :pop sup.
The doo risunlocke dand opens .
XTo unlock areard oor: pull up locking
knob :.
The doo risunlocke dand can be opened.
XTo ope nareard oor: pull doo rhandle ;.
You can ope nadoorfromi nsidet he vehicle
eve nifith as bee nlocked. You can only ope nthe
rea rdoors from insid ethe vehicle if they are no t
secure dbythechild-proof locks (
Ypage 60).
If th evehicle has previously bee nlocke dwith
th eS martKey from th eoutside, opening adoor
from th einsidew ill trigger th eanti-thef talarm
system. Switc hoffthea larm(
Ypage 68).
Centrally locking an dunlocking th e
vehicle from th einside
You can centrall yloc koru nlockthe vehicle from
th ei ns ide. Thi scan be useful if you wish to loc k
th ev ehicle befor epulling away, fo rexample.
XTo unlock :press butto n:.
XTo lock :press butto n;.
If all th edoors and th etrunk lid are closed, th e
vehicle locks .
76Doors
Opening andclosing