2018 MERCEDES-BENZ CLA COUPE lock

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

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
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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

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

XPress the lockingbutton on the driver’s door
(Ypage 76).
XCheck whether the lockin gknobs on the
front-passenger door and the rear doors are
still visible. Press down the lockin gknobs by
hand, if necessary.
XClose the driver's door.
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 clockwise as far as it
will go to position 1.
XTurn the mechanical key back and remove it.
XMake sure that the doors and the trunk lid are
locked.
XInsert mechanical key into the SmartKey
(Ypage 72).
iIf you lock the vehicle as described above,
the fuel filler flap is not locked. The anti-theft
alarm system is not armed.
Trunk
Important safety notes
GWARNING
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Exhaust
gases can enter the vehicle interior if the
trunk lid is open when the engine is running,
especially if the vehicle is in motion .There is a
risk of poisoning.
Always switch off the engine before opening
the trunk lid. Never drive with the trunk lid
open.
GWARNING
If objects, luggage or loads are not secured or
not secured sufficiently, they could slip, tip
over or be flung around and thereby hit vehicle
occupants. There is arisk of injury, particu-
larly in the event of sudden braking or asud-
den change in direction.
Always store object ssothat they cannot be
flung around. Secure objects, luggage or
loads against slipping or tipping before the
journey.
!The trunk lid swings upwards when opened.
Therefore, make sure that there is sufficient
clearance above the trunk lid.
The opening dimensions of the trunk lid can be
found in the "Vehicle data" section
(
Ypage 320).
You should preferably place luggage or loads in
the trunk .Observe the loading guidelines
(
Ypage 237).
Do not leave the SmartKey in the trunk .You
could otherwise lock yourself out.
The trunk lid can be:
Ropened and closed manually from outside
Ropened automatically from outside
Ropened automatically from inside
Rreleased with the emergencyr elease from the
inside
Opening/closing from outside
Opening
XPress the %button on the SmartKey.
XPull handle :.
XRaise the trunk lid.
78Trunk
Opening and closing

Closing
XPull down thetrunk lid usingh andle:.
XLet thetrunk lid dro pintot he lock.
XIf necessary, lockt hevehicle witht he&
butto nont heSmartKey or withK EYLESS-GO.
Opening automatically from outside
Important safety notes
GWARNING
Combustion engines emit poisonous exhaust
gases suchasc arbon monoxide. Exhaust
gases can ente rthe vehicle interiorift he
trunk lid is open when th eengineisr unning,
especiall yifthevehicle is in motion.T hereisa
ris kofp oisoning.
Always switch off th eengineb efore opening
th et runk lid. Never driv ewitht hetrunk lid
open.
!The trunk lid swings upward swhen opened.
Therefore, mak esure that there is sufficient
clearance abovet hetrunk lid.
iThe opening dimensionsoft hetrunk lid can
be foun dunde r"Vehicle data" (Ypage 320).
Opening automatically
You can open th etrunk lid automaticall yusing
th eS martKey or th ehandle in th etrunk lid.
XPress and hold the Fbuttonont heSmart-
Key until th etrunk lid opens.
or
XIf th etrunk lid is unlocked, pull th etrunk lid
handle and let it go again immediately.
HANDS-FREE ACCESS
Important safety notes
GWARNING
The vehicle's exhaust system may be ver yhot.
You coul dburn yourself by touching the
exhaust system if you use HANDS-FREE
ACCESS .Thereisar iskofi njury. Always
ensure that you only mak ethe kickin gmove-
men twithin th edetection range of sensors.
!If th eSmartKey is within th erear detection
range of KEYLESS-GO ,the followings itua-
tions ,for example ,coul dlead to th euninten-
tional opening of th etrunk:
Rusingac ar wash
Rusingap ower washer
Makes ure that th eSmartKey is at least 10 ft
(3 m) away from th evehicle.
iYou can also deactivate KEYLESS-GO .Fur-
ther informatio nondeactivatin gand activat-
ing KEYLESS-GO (
Ypage 71).
General notes
WithK EYLESS-GO and HANDS-FRE EACCESS,
you can open th etrunk lid without usingy our
hands. This is useful if you have your hands full. To do this, mak eakickingmovement unde rthe
bumpe rwithy our foot.
Observ ethe followingp oints:
RCarryyour KEYLESS-GO ke yabout your per-
son.T he KEYLESS-GO ke ymust be in th erear
detection range of th evehicle.
RWhen making th ekickin gmovement ,make
sure that you are standing firmly on the
ground and that there is sufficient clearance
to th erear of th evehicle .You coul dotherwise
lose your balance, for example on ice.
Trunk79
Opening and closing
Z

RAlwaysensure thaty ouonlym aket he kicking
movement withint he detection range of sen-
sors :.
RStand at leas t12in(30 cm)awa yfrom the
rea rareaw hile doing so.
RDo not come into contact with the bumper
whilemaking the kicking movement. Other-
wise, the sensors mayn ot functioncorrectly.
RHANDS-FREE ACCESS does not functio ndur-
ing engine start.
RDirt caused by roads alta round sensors :
mayr estrict functionality.
Using the HANDS-FREE ACCESS with apros-
theti cleg mayr estrict functionality.
RIfaK EYLESS-GO key is withint he reardetec-
tio nr ange of KEYLESS-GO ,HANDS-FREE
ACCESS could be triggered .The trun klid
could thusbeo penedu nintentionally, for
example, when you:
-set something down or lift something up
behind the vehicle.
-polish the rea rofthe vehicle.
Do not carry the KEYLESS-GO key abouty our
personint hesesituations or in situations sim-
ilar to these. Thi swillp revent the uninten-
tional opening of the trun klid.
Operation
XTo open: kick into sensor detection range :
belo wthe bumpe rwithy ourfoot.
XIf the trunk li ddoesn otope nafters everal
attempts: wait at leas tten secondst hen
move your le gunder the bumpe ronce again.
If yo uholdy ourfootu nder the bumpe rfor too
long, the trun klid does not open. Repeat the leg
movement more quickl yifthiso ccurs.
Opening automaticall yfrom inside
Important safety notes
GWARNING
Combustion engine semitp oiso nousexhaust
gases such as carbo nmonoxide. Exhaust
gases can entert he vehicleinterio rifthe
trun klid is open when the engine is running,
especially if the vehicl eisinmotion. There is a
ris kofp oisoning.
Alway sswitch off the engine before opening
the trun klid.N ever drive with the trun klid
open.
!The trun klid swing supwar ds when opened.
Therefore,m akes uret hatt hereiss ufficient
clearance above the trun klid.
The opening dimensions of the trun klid can be
found under "Vehicle data" (
Ypage 320).
Opening
Yo uc an open the trun klid from the driver's seat
when the vehicl eisstationar yand unlocked.
80Trunk
Opening and closing

XTo open:pull remote operating switch :for
the trunk li duntilthe trunk li dopens.
Emergencyr eleasefor the trunk
General notes
!The trunk li dswing su pwar ds when opened.
Therefore, make sure thatt hereiss ufficient
clearance above the trunk lid.
The opening dimensions of the trunk li dcan be
found in the "Vehicle data" section
(
Ypage 320).
If the trunk li dcan no longer be unlocked:
Rusing the SmartKey ,or
Rusing the remote operating switch in the door
controlp anel:
Use the emergency release on the insid eofthe
trunk lid.
Yo uc an reach the emergency release via the
trunk.
Opening
XFoldt he rears eatb ackres tforwards
(Ypage 240).
XInsert asuitabl etool ;,e .g.as crewdriver,
into opening :in the paneling.
The trunk li disreleased.
XOpenthe trunk lid.
Emergencyr eleasebutton
Youc an open the trunk li dfrom insid ethe vehi-
cle with the emergency release button.
XPress emergency release button :briefly.
The trunk li dunlocks and opens.
The trunk li dcan be unlockeda nd openedwith
the trunk li demergency release when the vehi-
cle is stationary or whil edriving.
The trunk li demergency release does not open
the trunk li difthe battery is disconnected or
discharged.
Trunk li demergency release light:
REmergency release button :flashesf or
30 minutes afte rthe trunk li disopened.
REmergency release button :flashesf or
60 minutes afte rthe trunk li disclosed.
Side windows
Important safety notes
GWARNING
While opening the side windows ,bod yp arts
could become trappe dbetween the side win-
do wa nd the door frame as the side window
moves. There is ariskofi njury.
Make sure thatn obodytouchest he side win-
do wd uring the opening procedure. If some-
Side windows81
Opening and closing
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