2018 MERCEDES-BENZ CLA COUPE key

!Do not warm up the engine with the vehicle
stationary. Drive off immediately.A void high
engine speeds and driving at full throttle until
the engine has reached its operating temper- ature.
Only shift the automatic transmission to the
desired drive position when the vehicle is sta-
tionary.
Where possible,a void spinning the drive
wheels when pulling awayons lippery roads.
You could otherwise damage the drive train.
!Mercedes-AMG vehicles: avoid full-load
operation and engine speeds greater than
5000 rpm when the engine is cold. This helps
to protect the engine and avoids uncomfort-
able driving.
Key positions
SmartKey
gTo remove the SmartKey
(shift the transmission to position j)
1Power supplyfor some consumers, such as
the windshieldw ipers
2Ignition (power supplyf or all consumers)
and drive position
3To start the engine
iThe SmartKey can be turned in the ignition
lock even if it is not the correct SmartKey for
the vehicle. The ignition is not switched on.
The engine cannot be started.
Start/Stop button
General notes
Vehicles with KEYLESS-GO are equipped with
SmartKeys featuring the integrated KEYLESS-
GO function and adetachable Start/Stop but-
ton.
Ac heck which periodically establishes aradio
connection between the vehicle and the Smart-
Key determines whether avalid SmartKey is in
the vehicle. This occurs, for example, when
starting the engine.
When you insert the Start/Stop button into the
ignition lock, the system needs approximately
two seconds recognition time. You can then use
the Start/Stop button.
Pressing the Start/Stop button several times in
succession corresponds to the different Smart-
Key positions in the ignition lock. This is only the
case if you are not depressing the brake pedal.
If you depress the brake pedal and press the
Start/Stop button, the engine starts immedi-
ately.
To start the vehicle without actively using the
SmartKey:
Rthe Start/Stop button must be inserted in the
ignition lock
Rthe SmartKey must be in the vehicle
Rthe vehicle must not be locked with the
SmartKey or KEYLESS-GO (Ypage 71)
Do not keep the KEYLESS-GO key:
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.
This can affect the functionality of KEYLESS-GO.
If you lock the vehicle with the SmartKey remote
control or with KEYLESS-GO, after ashort time:
Ryou will not be able to switch on the ignition
with the Start/Stop button.
Ryou will no longer be able to start the engine
with the Start/Stop button until the vehicle is
unlocked again.
If you lock the vehicle centrally using the button
on the front door (
Ypage 76), you can continue
to start the engine with the Start/Stop button.
The engine can be switched off while the vehicle
is in motion by pressing and holding the Start/
Stop button for three seconds. This function
122Driving
Driving and parking

operates independently of the ECO start/stop
automatic engine switch-off function.
Key positions with the Start/Stop button
:Start/Stop button
;Ignition lock
As soon as the ignition is switched on, all the
indicator lamps in the instrument cluster light
up.
For further information on situations in which an indicator lamp either fails to go out after the
engine is started or lights up while driving,
please refer to "Warning and indicator lamps in
the instrument cluster" (
Ypage 219).
If Start/Stop button :has not yet been
pressed, this is the same as the SmartKey being
removed from the ignition.
XTo switch on the power supply: press
Start/Stop button :once.
The power supply is switched on. You can now
activate the windshield wipers, for example.
The power supply is switched off again if:
Rthe driver's door is opened and
Ryou press Start/Stop button :twice when in
this position
XTo switch on the ignition: press Start/Stop
button :twice.
The ignition is switched on.
If you press Start/Stop button :once when
in this position, the ignition is switched off
again.
Removing the Start/Stop button
You can remove the Start/Stop button from the ignition lock and start the vehicle as normal
using the SmartKey.
You can only switch between Start/Stop button
mode and SmartKey operation when the vehicle
is stationary. You must also engage park position
j.
XRemove Start/Stop button:from ignition
lock ;.
You do not have to remove the Start/Stop but-
ton from the ignition lock when you leave the
vehicle. You should, however, alwayst ake the
SmartKey with you when leaving the vehicle. As
long as the SmartKey is in the vehicle:
Rthe vehicle can be started using the Start/
Stop button
Rthe electrically powered equipment can be
operated
Starting the engine
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, alwayst ake 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
Combustion engines emit poisonous exhaust
gases such as carbon monoxide. Inhaling
these exhaust gases leads to poisoning. There
is ar isk of fatal injury. Therefore never leave
the engine runningine nclosed spaces with-
out sufficient ventilation.
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Z

GWARNING
Flammable materials introduced through
environmental influence or by animals can
ignite if in contact with the exhaust system or
parts of the engine that heatu p. There isarisk
of fire.
Carry out regular checks to make sure that
there are no flammable foreignm aterials in
the engine compartment or in the exhaust
system.
General notes
During acold start, the engine runs at higher
speeds to enabl ethe catalytic converter to
reach its operating temperature. The sound of
the engine may change during this time.
Automatic transmission
XShift the transmission to position j
(Ypage1 30).
The transmission position display in the mul-
tifunction display shows P(
Ypage1 30).
iYou can start the engine in transmission
position jand i.
Starting procedure with the SmartKey
To start the engine using the SmartKey instead
of the Start/Stop button, pul lthe Start/Stop
button out of the ignitio nlock.
XTurn the SmartKey to position 3in the igni-
tion lock (Ypage1 22) and release it as soon
as the engine is running.
Starting procedure with the Start/Stop
button
The Start/Stop button can be used to start the
vehiclem anually without inserting the SmartKey
into the ignitio nlock. The Start/Stop button
must be inserted in the ignitio nlock and the
SmartKey must be in the vehicle. This mode for
starting the engine operates independently of
the ECO start/stop automatic engine start func-
tion.
You can start the engine if avalidS martKey is in
the vehicle. Switch off the engine and always
take the SmartKey with you when leaving the vehicle, even if you only leave it for
ashort time.
Pay attention to the important safety notes.
XDepress the brake pedala nd keep it
depressed.
XPress the Start/Stop button once
(Ypag e122).
The engine starts.
Starting procedure via smartphone
Observe the important safety notes on starting
the engine (Ypag e123).
You can als ostart you rengine via you rsmart-
phone from outside the vehicle. In this case, the
previousl yselected climate control setting is
activated. In this way you can cool or heat the
interior of the vehicleb efore starting the jour-
ney.
Only start the engine via you rsmartphone if it is
safe to start and run the engine where you rvehi-
cle is parked.
Observe the legals tipulations in the area where
you rvehicleisp arked.Engine start via smart-
phone may be limited to certain countries or
regions.
You can execute amaximu moftwo consecutive
starting attempts via you rsmartphone. If you
insert the SmartKey into the ignitio nlock, you
can carry out two more starting attempts.
Once you have started the engine, you can
switch the engine off via you rsmartphone at any
time.
You can only start the engine via you rsmart-
phone if:
Rthe SmartKey is in the ignitio nlock
Rpark position jis selected
Rthe accelerator pedalisn ot depressed
Rthe anti-theft alarm system is not activated
Rthe panicalarm is not activated
Rthe hazard warning lamp sare switched off
Rthe hood is closed
Rthe doors are closed and locked
Rthe windows and sliding sunroof are closed
Also make sure that:
Rthe fuel tank is sufficiently filled
Rthe starter battery is sufficiently charged
GWARNING
Limbs coul dbecrushedortrappe difthe
engine is started unintentionally during ser-
124Driving
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Important safety notes
GWARNING
If th eengineiss witched off automatically and
you exit th evehicle, th eengineisr estarte d
automatically. The vehicl emay begi nmoving .
Ther eisar iskofa cciden tand injury.
If you wish to exit th evehicle, always tur noff
th ei gnition and secure th evehicl eagainst
rollin gaway.
General notes
:ECO start/sto pdisplay
The ECO start/sto pfunction is activated when -
eve ryou start th eengineu singthe SmartKey or
th eS tart/Sto pbutton.
If th eengineh as been switched off automati-
call ybyt heECO start/sto pfunction ,the è
ECO symbol is shown in th emultifunction dis-
play.
Mercedes-AM Gvehicles: theE CO start/sto p
function is only available in driv eprogram C.
Automati cengines witch-off
If thevehicl eisb raked to astandstill in Dor N,
th eE CO start/sto pfunction switches off th e
engin eautomatically.
The ECO start/sto pfunction is operational
when :
Rthei ndicator lamp in th eECO butto nislit
green .
Rtheo utside temperature is within th erange
that is suitable for th esystem.
Rthee ngineisatn ormaloperating tempera-
ture.
Rth es et temperature for th evehicl einterior
has been reached.
Rth eb attery is sufficientl ycharged.
Rthes ystem detects that th ewindshield is no t
fogged up when th eair-conditioning system is
switched on .
Rtheh oodisc losed.
Rthed river' sdoor is closed and th edriver' s
seat belt is fastened.
All of th evehicle's systems remain active when
th ee ngineiss toppe dautomatically.
The HOLD function can also be activated if th e
engin ehas been switched off automatically. It is
then no tneces sarytoc ontin ue applyin gthe
brakes during th eautomatic stop phase. When
you depress th eaccelerato rpedal ,the engin e
start sautomatically and th ebraking effec tof
th eH OLDf unction is deactivated.
Automatic engin eswitch-off can tak eplacea
maximum of four times in arow (initial stop, then
three subsequen tstops).
Automati cengines t art
The enginestartsa utomatically if:
Ryou switch off th eECO start/sto pfunction by
pressin gthe ECO butto n
Rin transmission position Dor Ntheb rak e
pedal is release dand th eHOLDfunction is no t
active
Ryou depress th eaccelerato rpedal
Ryou engage revers egear R
Ryou mov ethe transmission out of position P
Ryou unfasten your seat belt or open th edriv-
er' sd oor
Rthev ehicl estartstor oll
Rth eb rak esystem require sthis
Rth et em perature in th evehicl einterior devi-
ate sfromt heset range
Rthes ystem detects moisture on th ewind-
shield when th eair-conditioning system is
switched on
Rth eb attery's condition of charge is to olow
Shifting th etransmission to position Pdoes no t
start th eengine.
126Driving
Driving and parking

Deactivating or activating theECO
start/stop function
XTo deactivate :press EC Obutto n:.
Indicator lamp ;goe sout.
XTo activate :press EC Obutto n:.
Indicator lamp ;lights up.
If indicator lamp ;is off, th eECO start/sto p
function has bee ndeactivated manually or as
th er esult of amalfunction .The engin ewill then
no tbes witched of fautomatically when th evehi-
cl es tops .
AMG Performance exhaust syste m
(Mercedes-AMG vehicles )
You can choosebetween differen tAMG Per-
formanc eexhaus tsystem volume susingthe
position of th eexhaus tflap .
Each time you start th eenginew itht he Smart -
Key or th eStart/Sto pbutton, th equietest set -
ting is activated.
Settin gthe volume :
XPress butto n:.
If you selec tthe loudest setting ,ind icator
lamp ;lights up.
Problem switht he engin e
ProblemPossible causes/consequences an dMSolutions
The engin edoesn ot
start .The HOLD function or Distanc ePilotD ISTR ONIC is activated.
XDeactivat ethe HOLD function (Ypage 157) or Distanc ePilot
DISTRONIC (Ypage 155).
XTryt os tart th eenginea gain .
The engin edoesn ot
start .The starter moto r
can be heard.RThere is amalfunction in th eenginee lectronics.
RThere is amalfunction in th efuelsupply.
Before attemptin gtostart th eenginea gain :
XTurnthe SmartKey bac ktoposition gin th eignition lock.
or
XPress th eStart/Sto pbutto nrepeatedly until all indicator lamp sin
th ei nstrument cluster go out .
XTryt os tart th eenginea gain .Avoid excessivel ylon ga nd frequent
attempt stostart th eengineast hese will drain th ebattery.
If th eengined oesn otstart after severa lattempts:
XConsult aqualified specialis tworkshop .
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Driving an dpark ing
Z

ProblemPossible causes/consequences andMSolutions
The engine does not
start. You cannot hear
the starter motor.The on-board voltage is too low because the battery is too weak or
discharged.
XJump-start the vehicle (Ypage 278).
If the engine does not start despite attempt stojump-start it:
XConsult aqualified specialist workshop.
The starter motor was exposed to athermal load that was too high.
XAllow the starter motor to cool down for approximately two minutes.
XTry to start the engine again.
If the engine still does not start:
XConsult aqualified specialist workshop.
The engine is not running
smoothly and is misfir-
ing.There is amalfunction in the engine electronics or in amechanical
componentoft he engine management system.
XOnly depress the accelerator pedal slightly.
Otherwise, non-combusted fuel may get into the catalytic converter
and damage it.
XHave the cause rectified immediately at aqualified specialist work-
shop.
The coolant temperature
gauge shows avalue
above 248 ‡(120 †).
The coolant warning
lamp may also be on and
aw arning tone may
sound.The coolant level is too low. The coolant is too hot and the engine is no
longer being cooled sufficiently.
XStop as soon as possible and allow the engine and the coolant to
cool down.
XCheck the coolant level (Ypage 260). Observe the warning notes
as you do so and add coolant if necessary.
DYNAMIC SELECTb utton (all vehicles
except Mercedes-AMG vehicles)
Use the DYNAMIC SELECT button to change the
drive program. Depending on the drive program
selected the following vehicle characteristics
will change:
Rthe drive (engine and transmission manage-
ment)
Rthe suspension (vehicles with damping sys-
tem or AMG adaptive sport suspension sys-
tem)
Rthe steering
Rthe availability of the ECO start/stop function
Rthe climate control:
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program Cis
activated. For further information about starting
the engine, see (
Ypage 125).
XPress DYNAMIC SELECT button :as many
times as necessary until the desired drive
program is selected.
The selected drive program appears in the
multifunction display.A fter five seconds the
display goes out and the status icon of the
selected drive program appears.
128DYNAMIC SELECT button (all vehicles except Mercedes-AMG vehicles)
Driving and parking

In addition, the current drive program settings
are displayedbrieflyint he multimedia system
display.
iIn af ew countries, the ECO start/stop func-
tion is deactivated at the factory due to the
available fuel grade.Int his case, the ECO
start/stop function is not available in any
drive program, regardless of the display in the
multimedia system display.
Available drive programs:
C ComfortComfortable and economi-
cal driving characteristics
SSportSporty driving characteris-
tics
IIndividualIndividual settings
E EconomyParticularly economical
driving characteristics
Additional information for drive programs
(Ypage 134).
You can also change gear yourself using the
steering wheel paddle shifters. For further infor- mation on the manua ldrive program
(
Ypage 136).
DYNAMIC SELECT controller
(Mercedes-AMG vehicles)
Use the DYNAMIC SELECT controller to change
the drive program. Depending on the drive pro-
gram selected the following vehicle character-
istics willc hange:
Rthe drive
Rthe transmission management
RESP®
Rthe suspension (vehicles with AMG adaptive
sport suspension system)
Rthe availability of the ECO start/stop function
Rthe availability of gliding mode
Each time you start the engine with the Smart-
Key or the Start/Stop button, drive program Cis
activated. For further information abouts tarting
the engine, see (
Ypage 125).
XTurn DYNAMIC SELECT controller :as many
times as necessary until the desiredd rive
program is selected.
The selected drive program appears in the
multifunction display. After five seconds the
display goes out and the status icon of the
selected drive program appears.
The drive program indicator on DYNAMIC
SELECT controller :lights up in red.
Available drive programs:
I IndividualIndividual settings
C ComfortComfort-oriented, opti-
mum-economy engine and
transmission settings
SSportSporty engine and trans-
missions ettings
S+Sport PlusParticularly sporty trans-
missions ettings
RaceMaximums portiness and
engine and transmission
settings suitable for the
racetrack
Additional information for drive programs
(Ypage 134).
You can also change gear yourself using the
steering wheel paddle shifters. For further infor- mation on the manua ldrive program
(
Ypage 136).
DYNAMIC SELECTc ontroller( Mercedes-AMG vehicles)129
Driving and parking
Z

At transmission fluid temperaturesbelow Ò4‡
( Ò20 †),y oucan onlys hift outofp arkp osition
j into another transmission positio nwhent he
engine is running.
In order to shift from park position jdirectly
into korh:
Rdepress the brake peda land
Rpush the DIRECT SELECTl ever up or down
past the first point of resistance
Engagin gpark position Pautomatically
Park position jis automaticall yengaged if:
Ryous witch off the engine using the SmartKey
and remove the SmartKey
Ryo us witch off the engine using the SmartKey
or using the Start/Stop button and open the
driver's door or front-passenger door
Ryo uo pent he driver's door when the vehicl eis
stationar yorwhend riving at averyl ow speed
and the transmission is in position hork
Unde rcertain conditions, the automatic trans-
mission shifts to transmission position jauto-
maticall yifthe HOLD functio norDistance Pilot
DISTRONICi sactivated.O bservethe informa-
tio nont he HOLD functio n(
Ypage 157)and
Distance Pilo tDISTRONIC(Ypage 154).
Engagin grevers egearR
!Onlym ove the automatic transmission to
k when the vehicl eisstationary.
XDepres sthe brake and kee pitpressed.
XPush the DIRECT SELECTl ever up past the
first point of resistance.
The ECO start/stopf unctio nisn ot available
when revers egearise ngaged .Further informa-
tio nont he ECO start/stopf unction
(
Ypage 126).
Shiftin gtoneutral N
GWARNING
If children ar eleftu nsupervised in the vehicle,
they could:
Ropen the doors,t husendangering other
people or roadu sers.
Rget outa nd disrupt traffic.
Roperate the vehicle's equipment.
Additionally, children could set the vehicl ein
motion if, for example, they:
Rrelease the parking brake.
Rshifting the automatic transmission outo f
park position P
RStartthe engine.
There is ariskofana ccident and injury.
Whe nleavi ng the vehicle, always take the
SmartKeyw ithy ou and lock the vehicle. Never
leav echildren or animals unattended in the
vehicle. Alway skeept he SmartKeyo utof
reach of children.
XIf the transmission is in position hork:
push the DIRECT SELECTl ever up or down to
the first point of resistance.
XIf the transmission is in position j:depress
the brake peda land push the DIRECT SELECT
lever up or down to the first point of resist-
ance.
If yo uswitch the engine off with the transmis-
sion in position korh,t he automatic trans-
mission shifts to iautomatically.
With the SmartKey: if youthen open the driv-
er' sd oorort he front-passenger door or remove
the SmartKeyf rom the ignition, the automatic
transmission shifts to jautomatically.
With the Start/Stopb utton:if youthen open
the driver's door or the front-passenger door,
the automatic transmission shifts to jauto-
matically.
If yo uwantthe automatic transmission to
remai ninneutral i,e.g.w he
n
h aving the vehi-
cle cleane dinanautomatic car wash with a
towing system:
XVehicles with the Start-Stop button:
remove the Start-Stop button from the igni-
tio nlock.
XInsert the SmartKeyi nto the ignition lock.
XAllv eh icles: switch the ignition on.
XDepres sthe brake peda land kee pit
depressed.
XEngage neutral i.
XReleasethe brake pedal.
XReleas ethe electri cparking brake.
XSwitch off the ignition and leav ethe SmartKey
in the ignition lock.
Automatict ransmission131
Driving andparking
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