2019 MERCEDES-BENZ CLA COUPE start stop button

G
WARNING
If child renopera tethe side windo wsthey
coul dbecome trapped,particu larlyif they are
left unsu pervi sed.There isarisk ofinjury .
Activate theoverrid efeatu refor the rear side
windo ws.When leaving thevehicl e,alw ays
take theSmartKey withyouand lock thevehi-
cle. Never leavechild renunsu pervi sedinthe
vehicl e. Side
window reversi ngfeature
The side windo wsare equipped with anauto-
matic reversi ngfeatu re.Ifasoli dobject blocks
or restricts aside windo wfrom traveli ng
upw ards duringthe automatic closingprocess ,
the side windo wopens againau tomatica lly.Dur-
ing the manua lclosi ngprocess ,the side windo w
only opens againautomatica llyafter thecorre-
spondi ngswi tch isrele ased .The automatic
reversi ngfeatu reisonly anaid and does not
reli eve you ofthe respo nsibilityofpay ing atten-
tion when closingaside windo w. G
WARNING
The reversi ngfeatu redoes notreact:
R to soft, light and thin objects, e.g.smal lfin-
gers
R whi leadju sting
This means thatthereversi ngfeatu recannot
prevent someone being trappe din these sit-
ua tions. There isarisk ofinjury .
Make surethatnobody parts areinclose
proximi tyduri ngthe closi ngproced ure.If
someone becomestrappe d,press the0062
button toopen theside windo waga in. Openi
ngand closing theside win-
dows
The switches forallside windo wsare loca tedon
the drive r'sdoor. There isals oaswi tch oneach
door forthe correspo ndingsidewindo w.
The switches onthe drive r'sdoor takeprece-
dence. 0043
Front left
0044 Front right
0087 Rea rright
0085 Rea rleft
X Turn theSmartKey toposi tion 0047or0048 inthe
ignitio nlock (Ypag e123).
X To open manually: pressandhold thecor-
respo nding switch.
X To open fully: press theswitch beyond the
pressu repoint andrelease it.
Automatic operationisstarted.
X To clo semanually: pullthe correspo nding
swi tch and hold it.
X To clo sefully: pullthe switch beyond the
pressu repoint andrelease it.
Automatic operationisstarted.
X To interrupt automatic operation:press/
pul lthe correspo ndingswitch again.
i If
you press/p ullthe switch beyond the
point ofresis tance, automatic operationis
started inthe correspo ndingdirection. You
can stop automatic operationbypressi ng/
pul ling theswitch again.
i You
cancontinue toopera tethe side win-
dow safter youswitch offthe engine or
remove theSmartKey .This function remains
active forfive minutes oruntil thedrive r'sor
front-passenge rdoor isopened .
i When
theoverrid efeatu refor the side win-
dow sis activa ted(Ypag e60) ,the side win-
dow scannot beopera tedfrom therear. Co
nven ienceopen ing
Vehic leswith KEYLESS-GO orKEYLESS-GO
start functio n:you can ventila tethe vehicl e
before youstart driving. Side
window s
83Openi ngand closi ng Z

0084
Switches coolingwith airdeh umidifica tion on/off (Ypage 116 )
006B Switches therearwi ndow defroste ron/off (Ypage 119 ) Note
son using the air-c onditi oning
sys tem
Ai r-co nditioning sys tem Bel
ow,yo ucan find anumb erofnotes andrec-
omme ndations tohel pyo uus ethe air-cond i-
tioni ngsystem optimally.
R Swi tch onthe air-cond itioning system byturn-
ing control knob0083clockwi setothe desired
pos ition (except position 0).
R Set thetemp erature to72 ‡(22 †).
R Rec omme ndationfor avo iding miste d
wi ndo wsatlow exte riortempe ratures or
in rain :swi tch onthe 005A coolingwith deh u-
mid ificati onfuncti on(Ypage 116 ).
Set airdi stri bution to0061 andifpos sible
swi tch off009C and009B (Ypage 117 ).
Dea ctiva teair-reci rculation mod e008A
(Y page 120 ).
Set airflo wcontrol 0083toasetti ngbetw een3
and 6(Y page 118 ).
R Rec omme ndationfor rapid coolin gor
heati ngofthe vehicle interi or:brieflyset
ai rflo wcontrol 0083toasetti ngbetw een3and
6 (Y page 118 ).
R Rec omme ndationfor aco nstan tveh icle
in teri ortempe rature: setairflo wcontrol 0083
to asetti ngbetw een1and 3(Y page 118).
R Rec omme ndationfor airdistribu tionin
wi nte r:sel ect the 009B and0061 settings
(Y page 117 ).
Rec omme ndationfor airdistribu tionin
summe r:sel ect the 009C or009C and0061
setti ngs(Ypage 117 ).
R Only usethe "Wind shielddef rosti ng"functi on
bri eflyunti lthe windsh ield iscle aragain. R
Only useair-reci rculation mod ebri efly,e.g. if
there areunp leas ant outsid eodo rsor wh enin
a tunnel .The window scou ldothe rwisefog up,
since nofres hairis dra wn into thevehiclein
ai r-reci rculation mod e.
R Ifyo ucha nge thesetti ngsofthe climate con-
trol system, theclimate statusdi spl ay
ap pea rsfor appro xima telythree secondsat
the botto mof the scre enon the multime dia
sy stem displ ay;see DigitalOpe rator'sMan-
ua l.You willsee thecurr entsetti ngsofthe
var ious climate control functions.
DY NAMI CSE LECT butto n(e xc ept
Merc edes-AMG vehic les) You
canchoo sebetw eenvarious drive pro grams
wi th the DYNAM ICSELECT button
(Y page 129 ).
If yo uha ve selected drive pro gramE:
R wh en hea ting, theelectri calhea terboo ster is
dea ctiva tedand inthe warming -upphase
hea tou tpu tis red uce d
R the rearwi ndow defroste rrunni ngtime is
red uce d
Depe nding on the confi gurati on, climate set-
tings mayalso be influenced inthe drive pro -
gra mI.
If yo uha ve selected drive pro gramCor S,cli-
mate settingsarenot influenced.
EC Ostart/s topfunc tion Duri
ngautoma ticengi neswi tch-off, theclimate
control system onlyoperate sat ared uce dcap a-
city .If yo ureq uire the fullcli mate control outpu t,
yo ucan switch offthe ECO start/stop function
by pre ssing the ECO button (Ypage 128 ). Ove
rviewof climate control systems
113Climate control

ual.
You willsee thecur ren tset tings ofthe
var ious climatecontrol function s.
DYNAM ICSELECT button (excep t
Mer cedes -AMGvehi cles) You
canchoos ebet ween various drivepro gram s
wit hth eDYN AMICSELECT but ton
(Y page 129).
If you have selected driv epro gram E:
R when heating,th eelec trical heat erboos teris
deac tivate dand inthewarm ing-up phase
heat output isred uced
R therear wind owdefrosterrun ningtim eis
red uced
De pen dingon theco nfigura tion,clim ateset-
tin gs may alsobeinfluen ced inthedriv epro -
gram I.
If you have selected driv epro gram Cor S,cli-
mat eset tings are notinf luen ced.
ECO star t/s top funct ion Dur
ingauto maticen gin eswit ch-off,th eclim ate
co ntrol syst emonlyoper atesat ared uced capa-
cit y.Ifyou require thefull clim atecontrol out put ,
you can switchoff theECO start /stopfun ction
by pre ssin gth eECO button(Y page 128). Ope
ratin gth eclim atecont rolsys-
tem s Activ
ating/d eactivatingclim atecon-
tr ol
Gener alnot es When
theclim atecontrol isswit ched off,th eair
supply andaircirculat ionare also switched off.
The wind owscould fog up.Ther efore,swit choff
clim atecontrol onlybrie fly
Air- cond itioning system X
Turn theSm artKey toposi tion0048 intheign i-
tio nloc k(Y page 123).
X To swit chon: turnco ntrol 0083 clockwise to
th edesir edposi tion(ex cep tposi tion0)
(Y page 112).
X To swit choff:tur nco ntrol 0083 count er-clo ck-
wise toposi tion0 (Y page 112). Dua
l-zone autom atic clim atecont rol X
Turn theSm artKey toposi tion0048 intheign i-
tio nloc k(Y page 123).
X To act ivate: pressthe0058 button.
The indicat orlamp inthe0058 buttonlight s
up. Airflow andairdist ribut ionare settoauto -
mat icmod e.
or
X Pre ssthe0078 button.
The indicat orlamp inthe0078 buttongoes
out .The previous lysele cted settings are
res tored .
X To dea ctiv ate: pre ssthe0078 button.
The indicat orlamp inthe0078 buttonlight s
up.
i Dual-
zone auto maticclim atecontrol: swit ch
on clim atecontrol prim arily usingth e0058
but ton. Swit
ching cooling withairdeh umidi-
fica tion on/off
Gener alnot es If
you deac tivate the"Coolin gwit hair- dehum id-
ific atio n"fun ction ,th eair inside theveh icle will
no tbe cooled. Theairinside theveh icle willalso
no tbe dehum idified. Thewind owscanfogup
mor equic kly.Ther efore, onlydeac tivate the
"Coolin gwit hair- dehum idificat ion"fun ction
brie fly.
The "Coolin gwit hair dehum idificat ion"fun ction
is on lyavailab lewhen theen gin eis run ning.The
air inside theveh icle isco oled anddehum idified
acc ording tothete mpe rature sele cted.
Con densation may dripfrom theunde rside of
th eveh icle when itis in coolin gmod e.This is
no rm aland nota sign that there isamalf unc-
tio n.
Activ ating/d eactivating X
Pre ssthe005A button.
The indicat orlamp inthe005A buttonlight s
up orgoes out.
The indicat orlamp inthebut tonind icat esthat
th eres pec tivefun ction isact ivat ed. The
"Coolin gwit hair dehum idificat ion"fun ction
has adelayed switch-off feat ure. 116
Op
era tingth eclim atecontr olsyst emsClim atecontr ol

!
Do
not warm upthe engine whilestationary.
Pull awayimmediately .Avoid highengine
speeds andfullthrott leuntil theengine has
reached itsoperating temperature.
In vehicles withautomatic transmission,
engage positions Pand Ronly when thevehi-
cle isstationary.
Where possible ,avoid spinning thedrive
wheels whenpulling awa yon slippe ryroads.
You could otherwise damagethedrive train.
! Mercedes-AMG
vehicles:avoid full-loa d
operation andengine speeds greater than
5000 rpmwhen theengine iscold. Thishelps
to protect theengine andavoids uncomfort-
able driving. Key
positions
Smar tKey 005A
Toremove theSmartKey
(shift thetransmission toposition 005D)
0047 Power supplyfor some consumers, suchas
the windshiel dwipers
0048 Ignition (powersupplyfor allconsumers)
and drive position
0049 Tostart theengine
i The
SmartKey canbeturned inthe ignition
lock even ifit is not thecorrect SmartKey for
the vehicle. Theignition isnot switched on.
The engine cannot bestarted.
Star t/Stop button General
notes
Vehicles withKEYLES S-GOareequip pedwith
SmartKeys featuringtheintegrated KEYLESS-
GO function andadetachable Start/Stopbut-
ton. A
check whichperiodica llyestablishes aradio
connec tionbetween thevehicle andtheSmart-
Key determines whetheravalid SmartKey isin
the vehicle. Thisoccurs, forexample, when
starting theengine.
When youinsert theStart/ Stopbutton intothe
ignition lock,thesystem needsapproximately
two seconds recognition time.Youcanthen use
the Start/ Stopbutton.
Pressing theStart/ Stopbutton several timesin
succession corresponds tothe different Smart-
Key positions inthe ignition lock.Thisisonly the
case ifyou arenot depressing thebrake pedal.
If you depress thebrake pedalandpress the
Start/ Stopbutton, theengine startsimmedi-
ately.
To start thevehicle without actively usingthe
SmartKey:
R the Start/ Stopbutton mustbeinserted inthe
ignition lock
R the SmartKey mustbeinthe vehicle
R the vehicle mustnotbelocked withthe
SmartKey orKEYLES S-GO(Ypage 71)
Do not keep theKEYLES S-GOkey:
R with electronic devices,e.g.amobile phone
or another SmartKey.
R with metallic objects, e.g.coins ormetal foil.
R inside metallic objects, e.g.ametal case.
This canaffect thefunctionality ofKEYLES S-GO.
If you lock thevehicle withtheSmartKey remote
cont rolorwith KEYLES S-GO,afterashort time:
R you willnotbeable toswitch onthe ignition
with theStart/ Stopbutton.
R you willnolonger beable tostart theengine
with theStart/ Stopbutton untilthevehicle is
unlocked again.
If you lock thevehicle centrallyusing thebutton
on the front door(Ypage 76),youcan cont inue
to start theengine withtheStart/ Stopbutton.
The engine canbeswitched offwhile thevehicle
is in motion bypressing andholding theStart/
Stop button forthree seconds. Thisfunction
operates independently ofthe ECO start/st op
automatic engineswitch-off function. Driving
123Drivingandparking Z

G
WARNING
Flamma blemateria lsintrodu cedthrough
environmental influence orby anima lscan
ignite ifin contact withtheexhau stsystem or
parts ofthe engine thatheatup. There isarisk
of fire.
Ca rry out regu larchecks tomake surethat
there arenoflamma bleforeig nmateria lsin
the engine compartment orinthe exhau st
system.
Gene ralnote s During
acold start, theengine runsathigh er
spee dstoenabl ethe catal yticconverter to
reach itsopera tingtempera ture.Thesound of
the engine maychange duringthis time.
Automatic transmissio n X
Shift thetransmissi ontoposi tion 005D
(Y pag e132) .
The transmissi onposi tion indica toronthe
multi function displayshow s005D
(Y pag e131) .
i You
canstart theengine intransmissi on
posi tions 005Dand 005C.
Starting procedurewith the SmartKey To
start theengine using the SmartKey instead
of the Start/Stop button,pullthe Start/Stop
button outofthe ignitio nlock.
X Turn theSmartKey toposi tion 0049inthe igni-
tion lock (Ypag e123) andrelease itas soon
as the engine isrunning.
Starting procedurewith the Start/Stop
button The
Start/Stop buttoncanbeused tostart the
vehicl emanua llywitho utinserting theSmartKey
into theignitio nlock. TheStart/Stop button
must beinserted inthe ignitio nlock andthe
SmartKey mustbeinthe vehicl e.This mode for
starting theengine operatesindep endently of
the ECO start/stop automatic enginestartfunc-
tion.
You canstart theengine ifavali dSmartKey isin
the vehicl e.Switch offthe engine andalways
take theSmartKey withyouwhen leaving the vehicl
e,even ifyou only leaveitfor ashort time.
Pay attention tothe importa ntsafety notes.
X Depress thebrake pedaland keep it
depre ssed.
X Press theStart/Stop buttononce
(Y pag e123) .
The engine starts.
Starting procedureviasmartphone Observe
theimporta ntsafety notesonstarting
the engine (Ypag e124) .
You canalsostart yourengine viayou rsmart-
phone fromoutsidethe vehicl e.In this case, the
previ ouslysele cted clima tecontrol settingis
activa ted.Inthis way youcan cool orheat the
interior ofthe vehicl ebefore starting thejour-
ney.
Only start theengine viayou rsmartpho neifit is
safe tostart andruntheengine whereyourvehi-
cle isparked .
Observe thelega lstipu lations inthe area where
you rvehicl eis parked .Engine startviasmart-
phone maybelimi ted tocertain countries or
regio ns.
You canexecute amaximu mof two consecutive
starting attempts viayou rsmartpho ne.Ifyou
insert theSmartKey intotheignitio nlock, you
can carry outtwo more starting attempts.
Once youhave started theengine, youcan
swi tch the engine offvia you rsmartpho neatany
time.
You canonly start theengine viayou rsmart-
phone if:
R the SmartKey isin the ignitio nlock
R park position 005Dissele cted
R the accele ratorpedalis not depre ssed
R the alarm for the anti-theft alarm system is
not set
R the pani cala rm isnot activa ted
R the hazard warninglamp sare switched off
R the hood isclosed
R the doors areclosed andlocked
R the windo wsand sliding sunroof areclosed
Also make surethat:
R the fuel tank issuffi ciently filled
R the starter battery hasbeen sufficiently
charge d Drivi
ng
125Drivi ngand parking Z

The
engine startsautomatically whenthedriver
wants topull away again. TheECO start/stop
funct ionthereby helpsyoutoreduce thefuel
consumpt ionand emissions ofyour vehicle.
Import antsafety notes G
WARNIN
G
If the engine isswitched offautomatically and
you exit thevehicle, theengine isrestart ed
automatically. Thevehicle maybegin moving.
There isarisk ofaccident andinjury.
If you wish toexit thevehicle, alwaysturn off
the ignition andsecure thevehicle against
rolling away.
General notes 0043
ECO start/stopdisplay
The ECO start/stopfunct ionisactivated when-
ever youstart theengine usingtheSmart Keyor
the Start /Stopbutton .
If the engine hasbeen switched offautomati-
cally bythe ECO start/stopfunct ion,the00D6
ECO symbol isshown inthe multifunct iondis-
play.
Mercedes-AMG vehicles:theECO start/stop
funct ionisonly availabl ein drive program C.
Automa ticengine switch-off If
the vehicle isbraked toastandst illin Dor N,
the ECO start/stopfunct ionswitches offthe
engine automatically.
The ECO start/stopfunct ionisoperational
when:
R the indicator lampinthe ECO button islit
green
R the outside temperat ureiswithin therange
that issuitable forthe system
R the engine isat normal operating temperature
R the settemperat ureforthe vehicle interior
has been reached R
the battery issufficient lycharged
R the system detectsthat thewindshield isnot
fogged upwhen theair-con ditioning systemis
switched on
R the hood isclosed
R the driver's doorisclosed andthedriver's
seat beltisfasten ed
All ofthe vehicle's systemsremainactivewhen
the engine isstopped automatically.
The HOLD functioncan also beactivated ifthe
engine hasbeen switched offautomatically. Itis
then notnecessary tocont inue applyi ngthe
brakes duringtheautomatic stopphase. When
you depress theaccelerator pedal,theengine
start sautomatically andthebraking effectof
the HOLD functionisdeactivated.
Automat icengine switch-offcan take place a
maximum offour times inarow (initial stop,then
three subsequent stops).
Automa ticengine start The
engine startsautomatically if:
R you switch offthe ECO start/stopfunct ionby
pressing theECO button
R in trans mission position 005Bor005C, thebrake
pedal isreleased andtheHOLD functionisnot
active
R you depress theaccelerator pedal
R you engage reverse gear005E
R you move thetrans mission outofposition 005D
R you unfasten yourseatbeltoropen thedriv-
er's door
R the vehicle startsto roll
R the brake system requires this
R the temperat ureinthe vehicle interiordevi-
ates from thesetrange
R the system detectsmoisture onthe wind-
shield whentheair-con ditioning systemis
switched on
R the battery's conditionofcharge istoo low
Shift ingthe trans mission toposition Pdoes not
start theengine. Driving
127Drivingandparking Z

Deact
ivating oract ivating theECO
st ar t/ stop funct ion X
To dea ctivate:pre ssECObut ton0043.
In dic ator lamp 0044goe sout .
X To act ivate:pre ssECObut ton0043.
In dic ator lamp 0044ligh tsup.
If indic ator lamp 0044isoff,th eEC Ostart /stop
fun ction has beendeac tivat ed man ually oras
th eres ult ofamalf unction .The engin ewill then
no tbe swit ched offaut omatically when theveh i-
cl e st ops . AMG
Performa nce exhaust sys tem
(Mer cedes-AMG vehicles )
You canchoos ebet ween differen tAM GPer -
fo rm anc eex haus tsyst emvolume susin gth e
pos ition oftheex haus tflap .
Ea ch time you start theen gin ewit hth eSm art-
Key ortheSt art /S topbut ton, thequiet estset-
ti ng isact ivat ed. Se
ttin g th evo lume :
X Press button0043.
If you selectth eloud estsetting ,in dic ator
lamp 0044ligh tsup. Pr
oblem swit hth eengin e Pr
oblem Poss
iblecauses/ cons equences and0050 0050
Solu tions The
engin edoe sno t
st art . The
HOLD function orActive Distanc eAs sis tDI ST RON ICisact ivat ed.
X De act ivat eth eHO LD function (Ypage 159)or Active Distanc e
As sis tDI ST RON IC(Y page 156).
X Tryto start theen gin eagain . The
engin edoe sno t
st art .The start ermo tor
can behear d. R
The reisamalf unction intheen gin eelec tron ics.
R The reisamalf unction inthefue lsupp ly.
Be fore atte mpt ing to start theen gin eagain :
X Tur nth eSm artKey backto pos ition 005Aintheign ition lock.
or X Press theSt art /S topbut tonrep eatedly untilall indic ator lamp sin
th einst rum entcl ust ergo out .
X Tryto start theen gin eagain .Av oid exce ssi vel ylon gand freque nt
at te mpt sto start theen gin eas these willdrainthebat tery.
If th een gin edoe sno tst art aftersev eralat te mpt s:
X Con sult aqualif iedspecialis twor kshop . 128
Dri
vingDri ving andpa rki ng

Problem
Possible
causes/co nsequences and0050 0050
Solutions The
engine doesnot
start. Youcannot hear
the starter motor. The
on-board voltageistoo low because thebattery istoo weak or
discharged.
X Jump-start thevehicle (Ypage 282).
If the engine doesnotstart despite attemptsto jump-st artit:
X Consult aquali fiedspecialist workshop. The
starter motorwasexposed toathermal loadthatwastoohigh.
X Allow thestarter motortocool down forapproximately twominutes.
X Try tostart theengine again.
If the engine stilldoes notstart:
X Consult aquali fiedspecialist workshop. The
engine isnot running
smoothly andismisfir-
ing. There
isamalfunction inthe engine electron icsorinamechanical
componen tof the engine management system.
X Only depress theaccelerator pedalslightly.
Otherwise, non-combusted fuelmay getinto thecatalytic converter
and damage it.
X Have thecause rectified immediately ataqual ified specialist work-
shop. The
coolant temperature
gauge shows avalue
above 248‡(120 †).
The coolant warning
lamp mayalsobeon and
a warning tonemay
sound. The
coolant levelistoo low. Thecoolant istoo hotand theengine isno
longer beingcooled sufficiently.
X Stop assoon aspossible andallow theengine andthecoolant to
cool down.
X Check thecoolant level(Ypage 263). Observe thewarning notes
as you dosoand add coolant ifnecessary. Notes
ontowing vehicles
The vehicle isnot suitable forattaching towbar
systems, suchasthose usedforflat towing or
dinghy towing.
Att aching orusing towbarsystems mayresult in
damage tothe vehicle.
When towing avehicle withtowbarsystems,
safe driving characterist icscannot beguaran-
teed forthe towing vehicle orthe towed vehicle.
The vehicle/trailer combinationmayswerve.
Observe thepermissible towingmethods
(Y page 287)andthenotes ontowing withboth
axles onthe ground (Ypage 286). DYNAMIC
SELECTbutt on(all vehicle s
except Mercedes-AMG vehicles)
Use theDYNAMIC SELECTbutton tochange the
drive program. Depending onthe drive program
selected thefollowing vehiclecharacterist ics
will change:
R the drive (engine andtransmission manage-
ment)
R the suspension (vehicleswithdamping sys-
tem orAMG adaptive sportsuspension sys-
tem)
R the sound ofthe exhaust system(vehicles
with sports exhaust system)
R the steering
R the availa bilityofthe ECO start/ stopfunct ion
R the climate control
Each timeyoustart theengine withtheSmart-
Key orthe Start /Stopbutton, driveprogram Cis DY
NAMIC SELECTbutt on(all vehicl esexce ptMercedes-AMG vehicles)
129Driving andparking Z