2019 MERCEDES-BENZ CLA COUPE engine

!
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

Key
positions with theSt art/S top button 0043
Start /S topbut ton
0044 Ignition lock
As soo nas theign ition isswit ched on,all the
ind icat orlamps intheins trumen tclus terligh t
up.
Fo rfur ther inf orm ation on situati onsin whic han
ind icat orlamp either fails togo out afterthe
en gin eis start ed orligh tsup while driving,
pleas eref erto "Warn ingand indicat orlamps in
th eins trumen tclus ter" (Y page 221).
If St art /S topbut ton0043 has notyet been
pre sse d,this is thesame astheSm artKey bein g
rem ovedfrom theign ition .
X To swit chon thepower supply:pre ss
St art /S topbut ton0043 once.
The power supplyis swit ched on.You cannow
act ivat eth ewin dsh ield wiper s,for example .
The power supplyis swit ched off again if:
R thedriv er'sdoor isopen edand
R you pressStart /S topbut ton0043 twicewhen in
th is posi tion
X To swit chon theignit ion:pressStart /S top
but ton0043 twice.
The ignition isswit ched on.
If you pressStart /S topbut ton0043 once when
in this posi tion ,th eign ition isswit ched off
again .
Rem oving theSt art/S top button
You canremove theSt art /S topbut tonfrom the
ign ition lockand start theveh icleas norm al
usin gth eSm artKey.
You canonlyswit chbet ween Start /S topbut ton
mod eand SmartKey oper ation when theveh icle
is stati onary.
You must alsoengage parkposition 005D. X
Remo veStart /S topbut ton0043 from ignition
loc k0044.
You donothave torem ove theSt art /S topbut -
to nfrom theign ition lockwhen youleaveth e
veh icle. You should, howe ver,always taketh e
Sm artKey withyou when leavingtheveh icle. As
lon gas theSm artKey isin theveh icle:
R theveh iclecan bestart ed usin gth eSt art /
St op but ton
R theelec trical lypower edequipm entcan be
oper ated St
arting theengine
Imp ortant safety notes G
WAR
NING
If ch ildr enare leftuns uper vised intheveh icle,
th ey could:
R oper atetheveh icle's equipm ent
Ad dition ally, childr encould set theveh iclein
mot ionif,for example ,th ey:
R rele ase thepark ingbrak e
R shif tth eauto matictrans mis sion outofpark
posi tion005D
R start theen gin e
Ther eis aris kof an acc iden tand injury.
Nev erleav ech ildr enoranim alsunat tend ed in
th eveh icle.
When leavingtheveh icle, always taketh e
Sm artKey withyou and lockth eveh icle. This
also applie sfor theDig italVeh icleKey ifth e
"Di gitalVeh icleKey" function isact ivat edvia
Mer cedesme conn ect . G
DANG
ER
Comb ustion engin esemit poisonous exhaust
gase ssuc has car bon mon oxide. Inhalin g
th ese exhaust gasesis haz ardo ustohealt h
and canresult inpois oning .Ther eis aris kof
fat alinj ury. Ther efore,never leav eth een gin e
run ningin an enclo sed spac ewit hout ade-
quat even tilati on. 124
Driv
ingDriv ingand parki ng

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

G
WARNING
Limbs couldbe crushe dor trappe difthe
engine isstarted unintentional lyduri ngser-
vice ormaintena ncework. There isarisk of
injury .
Alwa yssecure theengine against uninten-
tional starting beforecarryingout mainte-
nance orrepa irwork.
Make surethattheengine cannot bestarted via
you rsmartpho nebefore carryingout mainte-
nance orrepa irs.You canprevent anengine
start viayou rsmartpho ne,forexampl e,ifyou :
R swi tch onthe hazard warning lamp s
R do not lock thedoors
R open thehood Pulli
ngaway
Gene ralnote s G
WARNING
If the engine speedis abo vethe idling spee d
and youengag etransmissi onposi tion 003A
or 0046, thevehicl ecoul dpul lawa ysud denly .
There isarisk ofan accide nt.
When engagingtransmissi onposi tion 003A or
0046, alwaysfirmly depressthe brake pedal
and donot simu ltaneou slyaccele rate.
Depress theaccele ratorcarefu llywhen pulling
awa y.
The vehicl elocks centrally onceyouhave pulled
awa y.The locking knobsinthe doors dropdown.
You canopen thedoors fromtheinsid eat any
time.
You canalsodea ctivate theautomatic locking
featu re(Y pag e189).
Vehic leswith automatic transmission:itis
possi bletoshift thetransmissi onfrom position
005D tothe desi redposi tion only ifyou depre ss
the brake pedal.Only thencantheparki nglock
be dea ctivated.
All vehi cles(ex cept Merce des-AMGvehi -
cle s):ifyou donot depre ssthe brake pedal,the
DIRECT SELECT levercan stillbemoved butthe
parki nglock remai nsengag ed. Merce
des-AMGvehic les:if you donot depre ss
the brake pedal,the sele ctor levercan stillbe
moved buttheparki nglock remai nsengag ed.
At transmissi onfluidtempera turesbelow 00F84‡
(00F820 †),you can only shift outofposi tion 005D
into another transmissi onposi tion when the
engine isrunning.
i Upshi
ftstake placeathigh erengine speeds
after acold start. Thishelpsthe catal yticcon-
verter toreach itsopera tingtempera ture
more quickly.
Information onthe automatic release ofthe
electric parkingbrake (Ypag e145) .
Hill start assist Hill
start assisthelp syou when pulling away
forwa rdorinreverse onanuph illgrad ient. It
hold sthe vehicl efor ashort timeafter youhave
removed yourfoot from thebrake pedal.This
gives youenoug htime tomove yourfoot from
the brake pedalto the accele ratorpedaland to
depre ssitbefore thevehicl ebegi nstoroll . G
WARNING
After ashort time,hillstart assistwil lno lon-
ger brake yourvehicl eand itcoul droll awa y.
There isarisk ofan accide ntand injury .
There fore,quickly move yourfoot from the
brake pedalto the accele ratorpedal.Never
lea vethe vehicl ewhen itis held byhillstart
assi st.
Hill start assistisnot active if:
R you arepulling awayon aleve lroad oron a
dow nhill gradient.
R the transmissi onisin posi tion 005C.
R the electric parkingbrake isapp lied.
R ESP ®
is malfu nctioning.
Further informati ononhold ingthe vehicl esta-
tionary onuph illgrad ients (Ypag e135). EC
Ostart/stop function
Introduc tion The
ECO start/stop functionswitches the
engine offautomatical lyifthe vehicl eis stoppe d
under certain conditions. 126
Drivi
ngDrivi ngand parking

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

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

S+
Sport Plus Particularly
sportytrans-
mission settings Race
Maximum
sportiness and
engine andtransmission
settin gssuitable forthe
racetrack Additional
information fordrive programs
(Y page 135).
You canalso change gearyourself usingthe
steering wheelpaddle shifters. Forfurther infor-
mation onthe manual driveprogram
(Y page 137). Automat
ictra nsmission Import
antsafety notes G
WARNING
If the engine speedisabove theidling speed
and youengage transmission position003A
or 0046, thevehicle couldpullaway suddenly.
There isarisk ofan accident.
When engaging transmission position003Aor
0046, alwaysfirmly depress thebrake pedal
and donot simultaneously accelerate. G
WARNING
The automatic transmission switchestoneu-
tral position Nwhen youswitch offthe engine.
The vehicle mayrollaway .There isarisk ofan
accident.
Aft erswitching offthe engine, alwaysswitch
to parking position P.Prevent theparked vehi-
cle from rolling awaybyapply ingthe parking
brake. DIREC
TSELEC Tlever
Overview oftra nsmission positions 005D
Park position withparking lock
005E Reverse gear
005C Neutral
005B Drive
All vehicles (exceptMercedes-AMG vehi-
cles) :the DIRECT SELECTlever ison the right of
the steering column.
For information onthe selector leverin
Mercedes-A MGvehicles (Ypage 133).
The DIRECT SELECTlever alwaysreturns toits
original position. Thecurrent transmission posi-
tion 005D,005E,005Cor005B isshown inthe transmis-
sion position displayinthe multifunct iondisplay
(Y page 131).
Tra nsmission positionanddrive pro-
gram display The
current transmission positionanddrive pro-
gram appear inthe multifunct iondisplay . 0043
Transmission positiondisplay
0044 Gear
0087 Drive program display
The arrows inthe transmission positiondisplay
show howandinto which transmission positions
you can shift using theDIRECT SELECTlever.
If the transmission positiondisplayinthe mul-
tifunct iondisplay isnot working, youshould pull Automat
ictransmission
131Drivingandparking Z

away
carefully tocheck whet herthedesir ed
tr ans miss ionposit ioniseng aged. Ideally,you
shoul dselec ttr ans miss ionposit ion005Band
driv eprog ramEor S.
Engag ingpark posi tion P !
If
th eeng inespee dis toohigh ortheveh icle
is coas ting,do notshif tth eauto matictrans -
miss iondire ctly from 005Bto005E, from 005Eto005B
or dire ctly to 005D. Other wise, theauto matic
tr ans miss ionmay bedamage d.
X Push theDI RECT SELECT leve rswit chinthe
dire ction ofarr ow 005D.
Tran smis sion posit iondisplay 005Disshow nin
th emult ifunction display.
When youhave engaged parkposit ion005D, mak e
sure that thetrans miss ionposit iondisplay
show s005D inthemult ifunction display.
You canengage park position005Donlywhen the
veh icle isstatio nary;do notswit chdire ctly to
park position005Dathigh enginespee d.
De pres singth ebrak eand pushin gth eDI RECT
SE LECT leve rup ordown disengages thepark -
ing lock.The trans miss ionisin neut ral005C.
At trans miss ionfluid temper aturesbelow 00F84‡
(00F82 0†), you can onlyshif tout ofpark position
005D intoano ther trans miss ionposit ionwhen the
eng ineisrun ning.
In orde rto shif tfr om park position005Ddire ctly
int o005E or005B:
R depr essthebrak epedal and
R push theDI RECT SELECT leve rup ordown
past thefir st poin tof res istanc e
Engag ingpark posi tion Pau tom atically Park
position005Disauto matically engaged if:
R you switchoff theeng ineusin gth eSm artKey
and remove theSm artKey
R you switchoff theeng ineusin gth eSm artKey
or usin gth eSt art /S topbutt onand open the
driv er'sdoor orfron t-passe nger door
R you open thedriv er'sdoor when theveh icle is
st atio naryor when drivingataver ylow spee d
and thetrans miss ionisin posit ion005Bor005E
In cer tain situatio ns,th eauto matictrans mis-
sion shiftsauto matically totrans miss ionposi-
tio n005D ifth eHOL Dfun ction orActiveDis tan ce
As sist DISTRO NICisact ivat ed. Obse rveth e
inf orm ationon theHOL Dfun ction (Ypage 159) and
onActiveDis tan ceAssist DISTRO NIC
(Y page 155).
Engag ingreversegear R !
On
lymov eth eauto matictrans miss ionto
005E when theveh icle isstatio nary.
X De pres sth ebrak eand keep itpres sed.
X Push theDI RECT SELECT leve rup past the
fir st poin tof res istanc e.
The ECO start /stopfun ction isno tavailabl e
when revers egear iseng aged. Further inform a-
tio non theECO start /stopfun ction
(Y page 127).
Shif tingto neut ralN G
WAR
NING
If ch ildre nare left unsuperv isedintheveh icle,
th ey coul d:
R oper atetheveh icle'sequipm ent
Add ition ally, childre ncoul dset theveh icle in
mot ionif,for exam ple,they:
R rele ase thepark ingbrak e
R shif tth eauto matictrans miss ionout ofpark
posit ion005D
R start theeng ine
Ther eis arisk ofan acc iden tand injury.
Nev erleave childre nor anim alsunat tende din
th eveh icle.
When leavingth eveh icle,always taketh e
Sm artKey with youand lockth eveh icle.This
also applies fortheDig ital Vehi cleKey ifth e
"Dig italVehi cleKey" function isact ivat edvia
Mer cedesme connect.
X Ifth etrans miss ionisin posit ion005Bor005E:
push theDI RECT SELECT leve rup ordown to
th efir st poin tof res istanc e.
X Ifth etrans miss ionisin posit ion005D: depr ess
th ebrak epedal andpush theDI RECT SELECT
leve rup ordown tothefir st poin tof res ist-
anc e.
If you switchtheeng ineoffwith thetrans mis-
sion inposit ion005Eor005B, theauto matictrans -
miss ionshiftsto 005C auto matically.
Wit hth eSm artKey :if you then open thedriv -
er' sdoor orthefron t-passe nger door orrem ove 132
Aut
oma tictrans missionDriv ingand parking