2019 MERCEDES-BENZ CLA COUPE engine

Engine
compartm ent Hood
Imp ortant safety notes G
WAR
NING
If th ehood isunlat ched, itmay open upwhen
th eveh icle isin mot ionand blockyour view.
Ther eis arisk ofan acc iden t.
Nev erunlat chthehood while driving.Bef ore
ever ytrip, ens ure that thehood isloc ked. G
WAR
NING
When openingand closingth ehood ,it may
sudde nlyfall intoth eclo sed posit ion.Ther eis
a risk ofinjury topers onswith inran geof
mov emen tof thehood .
Open andclosethehood onlywhen nooneis
with inits ran geofmov emen t. G
WAR
NING
Open ingthehood when theeng ineisove r-
heat edorwhen there isafir ein theeng ine
com partmen tcoul dexp ose you tohot gases
or other servicepro duct s.Ther eis arisk of
inj ury.
Let anove rheatedeng inecoo ldown before
open ingthehood .If th ere isafir ein the
eng inecom partmen t,ke ep thehood closed
and contactth efir edepar tment . G
WAR
NING
The enginecom partmen tcon tain smov ing
com ponents.Cert aincom ponents,suc has
th eradiat orfan ,may continue torun orstart
again sudde nlywhen theign ition isoff .Ther e
is arisk ofinjury.
If you needto do any work inside theeng ine
com partmen t:
R swit choff theign ition
R nev erreac hint oth earea whereth ere isa
risk ofdang erfrom mov ingcom ponents,
suc has thefan rotatio narea R
rem ove jewelry andwatc hes
R ke ep items ofclo thing and hair, forexam -
ple, away from mov ingpart s G
WAR
NING
The ignition syst emand thefuel inject ion sys-
te m work underhigh voltage. Ifyou touch
com ponentswhic hare unde rvolt age, you
coul dget anelec tric shoc k.Ther eis arisk of
inj ury.
Nev ertouch com ponentsof theign ition sys-
te m or fuel inject ion syst emwhen theign ition
is swit ched on.
To ens ure theflow offresh airthroug hth eair
ven tsint oth eveh icle interio r,please observe
th efoll owin gno tes(Y page 121):
Open ingthehood G
WAR
NING
Cert aincom ponentsin theeng inecom part-
men t,suc has theeng ine,radiat orand parts
of theexh aust system, canbecome veryhot .
Wor kingin theeng inecom partmen tpose sa
risk ofinjury.
Wher eposs ible, lettheeng inecoo ldown and
to uch onlythecom ponentsdesc ribedin the
foll owin g. G
WAR
NING
When thehood isopen andthewind shield
wiper sare setinmot ion,you can beinjured by
th ewiper linkage. Thereis arisk ofinjury.
Always switchoff thewind shieldwiper sand
th eign ition befo reopen ingthehood .
! Mak
esure that thewind shieldwiper sare
no tfold edaway from thewind shield.You
coul dot her wise damag eth ewind shieldwip-
ers orthehood . 260
Engine
compartm entMa intenance andcare

X
Make surethatthewindshield wipersare
switched off.
X Pull release lever0043onthe hood.
The hood isreleased. X
Reach intothegap between thehood andthe
radiator trimandpress hoodcatch lever0044to
the left.
X Raise thehood. X
Pull support strut0085out ofbracket 0083.
X Lift upsupport strut0085and insert itinto yel-
low retaining clip0087. Closi
ngthe hood X
Raise thehood slightly and,atthe same time,
remove support strut0085from yellow retaining
clip 0087.
X Swing support strut0085down andpress itinto
bracket 0083until itengages.
X Lower thehood andletitfall from aheight of
approximately 8in (20 cm).
X Check thatthehood hasengaged properly.
If the hood canberaised slightly, itis not
properly engaged. Donot press thehood
closed. Openthehood again andclose itwith
a little more force. Engine
oil
General notes Depending
onyour driving style,thevehicle
consumes upto0.9 USqt(0.8 liters) ofoil per
600 miles (1,000 km).Theoilconsumption may
be higher thanthiswhen thevehicle isnew orif
you frequently driveathigh engine speeds.
Depending onthe engine, theoildipstick maybe
in adifferent location.
When checkingthe oillevel:
R park thevehicle onalevel surface
R the engine shouldbeswitched offfor approx-
imately fiveminutes ifthe engine isat normal
operating temperature
R ifthe engine isnot atnormal operating tem-
perature, e.g.ifthe engine wasonly started
briefly, waitabout 30minutes beforecarrying
out themeasurement
Checking theoillevel using theoildip-
stick G
WARNING
Certain componen tsinthe engine compart-
ment, suchasthe engine, radiator andparts
of the exhaust system,canbecome veryhot.
Working inthe engine compartmen tposes a
risk ofinjury.
Where possible, letthe engine cooldown and
touch onlythecomponen tsdescribed inthe
following. Engi
necompar tment
261Maintenance andcare Z

G
WARNING
Functions relevant tosafety arerestricted or
no longer available if:
R the engine isnot running
R the brake system orthe pow ersteering is
malfu nctioning
R there isamalfu nction inthe pow ersup ply
or the vehicl e'selectrica lsystem
When yourvehicl eis towed awayor towed
started, youmay requireconside rablymore
effort tosteer andbrake. Thereisarisk ofan
accide nt.
In such cases, useatow bar. Before being
towed awayor tow started, makesurethe
steering movesfreely. X
Pul loil dip stick 0043out ofthe dipstick guide
tube.
X Wip eoff oildip stick 0043.
X Slowl yslid eoil dip stick 0043into theguidetube
to the stop, andtake itout again.
If the leve lis betwe enMIN mark 0087and MAX
mark 0044,theoilleve lis correct.
X Ifthe oilleve lhas dropp edtoMIN mark 0087or
bel ow, add 1.1USqt(1.0 liter)engine oil.
Adding engineoil G
WARNING
Certa incomponents inthe engine compart-
ment, suchasthe engine, radiator andparts
of the exhau stsystem, canbecome veryhot.
Working inthe engine compartment posesa
risk ofinjury . Where
possible,let the engine cooldownand
touch onlythecomponents describedinthe
foll owi ng. G
WARNING
If engine oilcomes intocontact withhotcom-
ponents inthe engine compartment, itmay
ignite. Thereisarisk offire and injury .
Make surethatengine oilisnot spilled next to
the filler neck. Letthe engine cooldownand
thoroug hlyclea nthe engine oiloff the com-
ponents beforestarting theengine. H
Envi
ronmental note
When addingoil,take carenottospil lany. If
oil enters thesoil orwater ways,itis harmfu lto
the environment.
! Use
only engine oilsand oilfilters thatare
app roved forvehicl eswith aservice system. A
list ofthe engine oilsand oilfilters thathave
been tested andapproved inaccorda ncewith
Mercede s-BenzSpecifications forService
Produ ctsisava ilable atany authorized
Mercede s-BenzCenter.
The followi ngcaus eengine failure ordama ge
to the exhau stsystem:
R Use ofengine oilsand oilfilters thathave
not been express lyapp roved forthe service
system
R Rep lace ment ofengine oiland oilfilter after
the replacement intervalspecifiedbythe
service system hasexpire d
R Use ofengine oiladd itives
! Do
not add toomuch oil.add ingtoo much
engine oilcan resu ltin dama getothe engine
or tothe catal yticconverter. Haveexcess
engine oilsiph oned off. 262
Eng
inecompar tmentMainten anceandcare

Exam
ple: eng ineoilcap
X Tu rn cap 0043cou nter-c lockwi seand remove it.
X Add engineoil.
If the oille vel isat or below the MIN markon
the oildi ps tick, add1.1 USqt(1.0 liter) of
eng ineoil.
X Re place cap 0043onthe fillerneck andturn
clo ckwi se.
Ensu retha tthe cap locks into place securely.
X Ch eck theoille vel again wi th the oildi ps tick
(Y page 261 ).
Fur therinfo rma tionon eng ineoil(Y page 322 ). Ch
eckin gand addi ngoth erservi ce
produ cts
Ch eckin gco olant leve l G
WA
RNING
The cooling system ispre ssu rize d,pa rtic ular ly
wh en the moto ris wa rm. Ifyo uop en the cap,
yo ucou ldbe sca lded ifhot coolant sprays out.
The reisaris kof inju ry.
Let the enginecoo ldo wn befor eyo uop en the
cap .We arpro tecti veglove sand protecti ve
ey ew earwh en openi ng. Open the cap slow ly
to release pre ssu re.
! The
coolant level mustonl ybe che cked and
corr ecte dwh en the enginehascoo led do wn
(co olant temp eratureund er104 ‡(40 †).
Ch ecki ngthe coolant level when the coolant
temp eratureis ove r104 ‡(40 †) can leadto
dama getothe engine orthe engine cooling
sys tem. X
Park thevehi cleonaleve lsurfa ce.
Only check thecoola ntleve lwhe nthe vehi cle
is on aleve lsurfa ceand theengine hascoole d
dow n.
X Turn theSmartKey toposi tion 0048inthe igni-
tion lock (Ypag e123).
X Che ckthe coola nttempera turedisplayin the
instrume ntclus ter.
The coola nttempera turemust bebelow
104 ‡(40 †).
X Turn theSmartKey toposi tion 005A
(Y pag e123) inthe igniti onlock .
X Slow lyturn cap0043counter-clo ckwiseandto
reli eve excess pressure.
X Turn cap0043further counter-clo ckwiseand
remove it.
If the coola ntisat the leve lof marker bar0087
in the filler neck whencold, there isenoug h
coola ntincoola ntexpa nsion tank0044.
X Ifnecessa ry,add coola ntthat hasbeentested
and approved byMerced es-Benz.
X Rep lace cap 0043and turn itclockwi seasfar as
it wil lgo.
For further informa tiononcoola nt,see
(Y pag e323) .
Windshi eldwashe rsyste m G
WARNING
Certa incomponents inthe engine compart-
ment, suchasthe engine, radiator andparts
of the exhau stsys tem, canbecome veryhot.
Working inthe engine compartment posesa
risk ofinjury .
Where possible,let the engine cooldownand
touch onlythecomponents describedinthe
foll owi ng. Eng
inecompar tment
263Maintenanceand care Z

G
WARNING
Windsh ieldwas herconcentrate couldignite if
it comes intocontact withhotengine compo-
nents orthe exhau stsystem. Thereisarisk of
fire and injury .
Make surethatnowinds hieldwas hercon-
centrate isspil led next tothe filler neck. X
To open :pul lcap 0043upw ards bythe tab.
X Add thepremi xedwasherfluid.
X To clo se: press cap0043onto thefiller neck
until itengag es.
If the was herfluidleve ldrops below the recom-
mended minimumof 1liter, amessa geapp ears
in the multi function displayprompti ngyou to
add washerfluid(Y pag e218) .
Further informati ononwinds hieldwas herfluid/
antifree ze(Y pag e323) . ASSY
STPLU S Servic
emessag e
The ASSYST PLUSservice interval display
informs youofthe next service duedate.
You canfind informati onon the type ofservice
and service intervalsin the Maintenance Book-
let.
You canobtai nfurther informati onfrom an
au thorized Mercede s-BenzCenter orat
http://www.mb usa.com (USA only).
i The
ASSYST PLUSservice interval display
does notshow anyinformati ononthe engine
oil leve l.Observe thenotes onthe engine oil
leve l(Y pag e261) . The
multi function displayshow sa service mes-
sage forsevera lseconds, e.g.:
R Service Ain ..days Service
Ain ..days
R Service Adue Service
Adue
R Service Aoverdue by..days Service
Aoverdue by..days
Dependi ngon the opera tingconditions ofthe
vehicl e,the remai ningtime ordista nceuntil the
next service duedate isdisp layed.
The letter A A
or B B,
possi blyinconnection witha
number oranother letter,indicatesthe type of
service .A A
stands foraminor service andB B
for a
major service .
You canobtai nfurther informati onfrom an
au thorized Mercede s-BenzCenter.
The ASSYST PLUSservice interval displaydoes
not take intoaccount anyperiods oftime during
whi chthe battery isdisconnected.
Mai ntaining thetime-dep endentservice sched-
ule :
X Note downthe service duedate displayed in
the multi function displaybefore disconnect-
ing the battery .
or X After reconnecting thebattery ,sub tract the
battery disconnectio nperi ods from theser-
vice date show non the disp lay. Hiding
aservi cemessag e
X Press the0076 or0038 button onthe steering
whee l. Di
splayin gservi cemessag es
X Switch onthe ignitio n.
X Press the0059 or0065 button tosele ctthe
Serv. Serv.
menu.
X Press the0063 or0064 button tosele ctthe
ASSYST ASSYST
PLUS PLUS
submenu andconfirm bypress-
ing the 0076 button.
The service duedate appears inthe multi -
function display. 264
ASS
YST PLUSMainten anceandcare

X
Make surethatthevehicle isat astandstill
and theSmartK eyisin position 0048inthe igni-
tion lock.
X Open thecamera coverforcleaning viathe
multimedia system(seeDigital Operator's
Manual).
X To clean therear view camera: useclear
water andasoft cloth toclean camera
lens 0043.
Cleanin gthe exhaust pipes G
WARNING
The exhaust tailpipe andtailpipe trimcan
become veryhot.Ifyou come intocontact
with these partsofthe vehicle, youcould burn
yourself. Thereisarisk ofinjury.
Always beparticularly carefularound the
exhaust tailpipe andthetailpipe trim. Allow
these componen tsto cool down before touch-
ing them.
! Do
not clean theexhaust pipewithacid-
based cleaning agents,suchasbathroom
cleaner orwheel cleaner.
! Mercedes-AMG
vehicleswithblack exhaust
pipes: theblack-chr ometailpipe finishers
should notbepolished withachrome polish.
They willotherwise losetheir black sheen. For
optimal care,thefaceplates shouldberubbed
with alightly oiledcloth afterevery carwash.
Commercially availableengine andcare oils
are suitable forthis.
For heavier soiling,youcan apply afine paint-
work polish withamicrofiber cloth.Remove
the excess polishresidue afterpolishing.
Impurities combinedwiththeeffect sof road grit
and corrosive environmentalfactors maycause
flash rusttoform onthe surface. Youcan
restore theoriginal shineofthe exhaust pipeby
cleaning itregularly ,especially inwinter and
after washing.
X Clean theexhaust pipewithacare product
tested andapproved byMercedes-Ben z. Interior
care
Cleanin gthe display !
For
cleaning, donot use anyofthe following:
R alcohol-based thinneror gasoline
R abrasive cleaningagents
R commerc ially-availabl ehousehold cleaning
agents
These maydamage thedisplay surface. Do
not putpressure onthe display surface when
cleaning. Thiscould leadtoirreparable dam-
age tothe display .
X Before cleaning thedisplay ,make surethatit
is switched offand hascooled down.
X Clean thedisplay surface usingacommer-
cially availa blemicrofiber clothandTFT/LCD
display cleaner.
X Dry thedisplay surface usingadry microfiber
cloth.
Cleanin gthe plastic trim G
WARNING
Care products andcleaning agentscontaining
solvents causesurfaces inthe cock pitto
become porous.Asaresult, plastic partsmay
come looseinthe event ofair bag deploy -
ment. Thereisarisk ofinjury.
Do not use anycare products andcleaning
agents toclean thecock pit.
! Never
attach thefollowing toplastic surfa-
ces:
R stick ers
R films
R perfume oilcont ainer orsimilar
You could otherwise damagetheplastic.
! Do
not allow cosmetic s,insect repellent or
sunscreen tocome intocont actwith theplas-
tic trim. Thismaintains thehigh-quali tylook of
the surfaces.
X Wipe theplastic trimwith adamp, lint-free
cloth, e.g.amicrofiber cloth.
X Heavy soiling:use care andcleaning prod-
ucts recommen dedandapproved by
Mercedes-Ben z.
The surface maychange colortemporarily.
Wait untilthesurface isdry again. 270
CareMaintenance
andcare

Vehi
cle too lkit
Gen eral notes Veh
icles with aTIR EFIT kit:the TIREFIT kitis
lo cate din the stow agewe llund erthe trunk
flo or.
Veh icles with atire -cha nge tool kit:the tire-
cha nge tool kitisin the stow agewe llund erthe
trunk floor.
Apa rtfrom certaincou ntry -spe cificvar iatio ns,
the vehicles are not equipp ed with atire -cha nge
tool kit.Some toolsfor cha nging awh eelare
spe cificto the vehicle. For more informa tionon
wh ich tire changing tool sare required and
ap pro ved toperfor mawh eelcha nge onyour
veh icle, consu ltaqu alifi ed spe cialist wo rksh op.
Too lsreq uired forcha nging awh eelmay
incl ude,for exa mpl e:
R Jack
R Whe elchoc k
R Lu gwre nch
R Ali gnme ntbolt
Vehi cles with aTIRE FITkit 0043
Tire infl ation comp ressor
0044 Tire sea lant fillerbo ttle
0087 Tow ingeye
X Ope nthe trunk lid.
X Lif tthe trunk floor upwa rds (Ypage 243) .
X Use theTIREFIT kit(Ypage 276 )orremove it.
Towi ngeye 0087islocated undertireinfla tion
compresso r0043.
i Example:
equipment andcountry-spe cific
varia tions possible. Vehic
leswith atire-chang etool kit X
Open thetrunk lid.
X Lift the trunk floorupwards (Ypag e243).
X Remo vethe tire-change toolkit.
The tire-change toolkitcontains:
R Jack
R Lug wrench
R Pai rof glove s
R Foldi ngwhee lchock Flat
tire Preparing
thevehic le
You rvehicl emay beequ ipped with:
R MOExtended tires(tires withrun-flat proper-
ties) (Ypag e275)
Vehicl eprepa ration isnot necessary onvehi-
cles with MOExtended tires.
R aTIREFIT kit(Ypag e274)
Vehicl esequ ipped with MOExtended tiresare
not equippedwith aTIREFIT kitatthe factory. It
is therefore recommended thatyouadditional ly
equ ipyou rvehicl ewith aTIREFIT kitifyou mount
tires thatdonot feature run-flat characteristics,
e.g. winter tires.ATIREFIT kitmay beobtai ned
from aqua lified specia listworkshop .
Information onchanging andmounting wheels
(Y pag e310).
X Stop thevehicl eon soli d,non-slipp eryand
level ground ,as far awa yas possi blefrom
traffic.
X Switch onthe hazard warninglamp s.
X Secure thevehicl eaga inst rolling awa y
(Y pag e142) .
X Ifpossi ble,bring thefront wheelsinto the
straigh t-ahead position.
X Switch offthe engine.
X Vehic leswitho utKE YLESS-GO :remove the
SmartKey fromtheignitio nlock.
X Vehic
leswith KEYLESS-GO start-function
or KEYLESS-GO :open thedriver' sdoor.
The vehicl eelectronics arenow inposi tion
005A. This isthe same asthe SmartKey having
been removed .
X Vehic
leswith KEYLESS-GO start-function
or KE YLESS-GO :remove theStart/Stop but-
ton from theignitio nlock (Ypag e123). 274
Fl
at tireBreakdown assistance

X
Make surethattheengine cannot bestarted
via your smartphone (Ypage 124).
X Make surethatthepassengers arenot endan-
gered asthey doso. Make surethatnoone is
near thedanger areawhile awheel isbeing
changed. Anyonewhoisnot directly assisting
in the wheel change should,forexample,
stand behind thebarrier.
X Get outofthe vehicle. Payattent iontotraffic
condition swhen doing so.
X Close thedriver's door. MOExtended
tires(tires withrun-flat
proper ties)
General notes With
MOExt ended tires(tires withrunflatchar-
acteristics ),you can cont inue todrive yourvehi-
cle even ifthere isatotal lossofpressure inone
or more tires.Theaffected tiremust notshow
any clearly visibledamage.
You canrecogniz eaMOExt ended tirebythe
MOExt ended marking whichappears onthe
sidewa llof the tire. Youwillfind thismarking
next tothe tire size designation, theload-bear-
ing capacity andthespeed index(Ypage 305).
MOExt ended tiresmaybeused onlyinconj unc-
tion with anactivated tirepressure losswarning
system (Canada only)ortire pressure monitor
(USA only).
If apressur eloss warning message appears
in the multifu nctiondisplay:
R observe theinstruct ionsinthe display mes-
sages (Ypage 213).
R check thetire fordamage
R ifdriving on,observe thefollowing notes
The driving distance possibleinrun-flat modeis
approximately 50miles (80km) when thevehi-
cle ispartially laden.Whenthevehicle isfully
laden itis approximately 19miles (30km).
In addition tothe vehicle load,thedriving dis-
tance possible depends upon:
R vehicle speed
R road condition
R outside temperature
The driving distance possibleinrun-flat mode
may bereduced byextrem edriving condition s
or maneuvers, oritcan beincreased througha
moderate styleofdriving. The
driving distance possibleinrun-flat modeis
counted fromthemoment thetire pressure loss
warning appears inthe multifunction display.
You must notexceed amaximum speedof
50 mph (80km/h).
When replacing oneorall tires, please observe
the following specifications foryour vehicle's
tires:
R size
R type and
R the "MOExt ended" marking
If atire has gone flatand cannot bereplaced
with aMOExt ended tire,astandard tiremay be
used asatemporary measure.Makesurethat
you usetheproper sizeandtype (summer or
winter tire).
Vehicles equippedwith MOExt ended tiresare
not equipp edwith aTIREFIT kitatthe factory. It
is therefore recommen dedthat youadditionally
equip yourvehicle withaTIREFIT kitifyou mount
tires thatdonot feature run-flat properties, e.g.
winter tires.ATIREFIT kitmay beobtained from
a qual ified specialist workshop.
Import antsafety notes G
WARNING
When driving inemergency mode,thedriving
characterist icsdeteriorate, e.g.when corner-
ing, accelerating quicklyandwhen braking.
There isarisk ofan accident.
Do not exceed thestated maximum speed.
Avoid abrupt steering anddriving maneuvers,
and driving overobstacles (curbs,potholes,
off-road). Thisappli esinparticular toaladen
vehicle.
Stop driving inemergency modeif:
R you hear banging noises.
R the vehicle startstoshake.
R you seesmoke andsmell rubber.
R ESP ®
is interven ingconst antly.
R there aretears inthe sidewa llsofthe tire.
Aft erdriving inemergency mode,havethe
wheel rimscheck edataqual ified specialist
workshop withregard totheir further use.The
defective tiremust bereplaced inevery case. Flat
tire
275Breakdown assistance Z