2020 MERCEDES-BENZ GLA engine

Engine
compartm ent Hood
Imp ortant safety notes G
WAR
NING
If th ehood isunlat ched, itmay open up
when theveh icle isin mot ionand blockyour
view. Thereis 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 e
is arisk ofinjury topers onswith inran geof
mov emen tof thehood .
Open andclosethehood onlywhen noone
is 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 eis 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
syst emwork underhigh voltage. Ifyou
to uch com ponentswhic hare unde rvolt age,
you couldget anelec tric shoc k.Ther eis a
risk ofinjury.
Nev ertouch com ponentsof theign ition sys-
te m or fuel inject ion syst emwhen theign i-
tio nis 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 123):
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 very
hot .Wor kingin theeng inecom partmen t
pose sa risk ofinjury.
Wher eposs ible, lettheeng inecoo ldown
and touch onlythecom ponentsdesc ribedin
th efoll owin g. G
WAR
NING
When thehood isopen andthewind shield
wiper sare setinmot ion,you can beinjured
by thewiper 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 . 274
Engine
compartm entMa intenance andcare

X
Make surethatthewindshield wipersare
switched off.
X Pull release lever0043onthe hood.
The hood isreleased. X
Reach intothegap between thehood and
the radiator trimandpress hoodcatch
lever 0044tothe 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 clip0087.
X Swing support strut0085down andpress it
into 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 it
with alittle 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 behigher thanthiswhen thevehicle is
new orifyou frequently driveathigh engine
speeds.
Depending onthe engine, theoildipstick may
be inadifferent location.
When checkingthe oillevel:
R park thevehicle onalevel surface
R the engine shouldbeswitched offfor
approximately fiveminutes ifthe engine is
at normal operating temperature
R ifthe engine isnot atnormal operating tem-
perature, e.g.ifthe engine wasonly started
briefly, waitabout 30minutes beforecarry-
ing out themeasurement
Checking theoillevel using theoildip-
stick G
WARNING
Certain componen tsinthe engine compart-
ment, suchasthe engine, radiator andparts
of the exhaust system,canbecome very
hot. Working inthe engine compartmen t
poses arisk ofinjury.
Where possible, letthe engine cooldown
and touch onlythecomponen tsdescribed in
the following. Engi
necompar tment
275Maintenance 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 of
an 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 theguide
tube tothe 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 0087
or bel ow, add 1.1USqt(1.0 l)of engine oil.
Adding engineoil G
WARNING
Certa incomponents inthe engine compart-
ment, suchasthe engine, radiator andparts
of the exhau stsystem, canbecome very
hot. Working inthe engine compartment
pose sa risk ofinjury . Where
possible,let the engine cooldown
and touch onlythecomponents describedin
the followi ng. G
WARNING
If engine oilcomes intocontact withhot
components inthe engine compartment, it
may ignite. Thereisarisk offire and injury .
Make surethatengine oilisnot spilled next
to the filler neck. Letthe engine cooldown
and thoroug hlyclea nthe engine oiloff the
components beforestarting theengine. H
Envi
ronmental note
When addingoil,take carenottospil lany. If
oil enters thesoil orwater ways,itis harmfu l
to the environment.
! Use
only engine oilsand oilfilters thatare
app roved forvehicl eswith aservice system.
A list ofthe engine oilsand oilfilters that
have been tested andapproved inaccord-
ance withMercede s-BenzSpecifications for
Service Productsisava ilable atany author-
ized Mercede s-BenzCenter.
The followi ngcaus eengine failure ordam-
age tothe exhau stsystem:
R Use ofengine oilsand oilfilters thathave
not been express lyapp roved forthe ser-
vice system
R Rep lace ment ofengine oiland oilfilter
after thereplacement intervalspecified
by the service system hasexpire d
R Use ofengine oiladd itives
! Do
not add toomuch oil.add ingtoo much
engine oilcan resu ltin dama getothe
engine ortothe catal yticconverter. Have
excess engineoilsiph oned off. 276
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 mark
on 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
sec urely.
X Ch eck theoille vel again wi th the oildi ps tick
(Y page 275 ).
Fur therinfo rma tionon eng ineoil
(Y page 338 ). 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,partic u-
la rly when the moto ris wa rm. Ifyo uop en
the cap,yo ucou ldbe sca lded ifhot coolant
sp rays out.The reisaris kof inju ry.
Let the enginecoo ldo wn befor eyo uop en
the cap.We arpro tecti veglove sand protec-
tive eyew earwh en openi ng. Open the cap
sl ow lyto release pre ssu re.
! The
coolant level mustonl ybe che cked
and correcte dwh en the enginehascoo led
do wn (coolant temp eratureund er104 ‡
(40 †).Ch ecki ngthe coolant level when the
coo lant temp eratureis ove r104 ‡(40 †)
can lead todama getothe engineorthe
eng inecoo ling system . X
Pa rk the vehicleon alevel surfa ce.
Onl yche ckthe coolant level when the vehi-
cle ison alevel surfa ce and theenginehas
coo led do wn.
X Tu rn the Sma rtKeyto positio n0048 inthe igni-
tio nlock (Ypage 125 ).
X Ch eck thecoolant temp eraturedisp layin
the instrument cluster .
The coolant temp eraturemu stbe below
104 ‡(40 †).
X Tu rn the Sma rtKeyto positio n005A
(Y page 125 )in the igniti onlock .
X Slo wlytur ncap 0043cou nter-c lockwi seand to
rel ieve exce sspre ssu re.
X Tu rn cap 0043furthe rcou nter-c lockwi seand
rem ove it.
If the coolant isat the level ofma rker bar
0087 inthe fillerneck when cold,the reis
eno ughcoo lant incoo lant exp ansion
tank 0044.
X Ifnece ssary,ad dcoo lant tha tha sbe en tes-
ted and appro ved byMe rced es-Benz.
X Re place cap 0043and turnit clo ckwi seasfar
as itwi llgo .
For furthe rinfo rma tionon coo lant, see
(Y page 339 ).
Win dshi eld wa she rsys tem G
WA
RNING
Ce rta incomp onents inthe enginecomp art-
ment, such asthe engine,ra diato rand parts
of the exhaust system ,can become very
hot. Workin gin the enginecomp artment
po ses aris kof inju ry.
Wh ere possi ble, letthe enginecoo ldo wn
and touchonl ythe comp onents descri bedin
the followi ng. En
gine compartmen t
277Mai ntenan ceand care Z

G
WARNING
Opening thehood when theengine isover-
hea ted orwhen thereisafire inthe engine
compartment couldexpose youtohot gase s
or other service products.There isarisk of
injury .
Let anoverhe atedengine cooldownbefore
openi ngthe hood. Ifthere isafire inthe
engine compartment, keepthehood closed
and contact thefire depa rtment. G
WARNING
Windsh ieldwas herconcentrate ishigh ly
flamma ble.If winds hieldwas herconcentrate
gets onto hotcomponents ofthe engine or
the exhau stsystem, itcan ignite. Thereisa
risk offire and injury .
Make surethatwinds hieldwas herconcen-
trate isnot spilled inthe vicinity ofthe 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 rec-
ommended minimumof 1liter, amessa ge
app ears inthe multi function displayprompti ng
you toadd washerfluid(Y pag e229) .
Further informati onon winds hieldwas her
flui d/antifree ze(Y pag e339). ASSY
STPLU S Servic
emessag e
The ASSYST PLUSservice interval display
informs youofthe next service duedate.
You canfind informati ononthe 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 oilleve l.Observe thenotes onthe
engine oilleve l(Y pag e275).
The multi function displayshow sa service
messa gefor severa 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 dur-
ing whichthe 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 steer-
ing whee l. 278
ASS
YST PLUSMainten anceandcare

or
sparks arecreated, thehydrogen gascan
ignite. Thereisarisk ofan explosion.
R Make surethatthepositive terminalof a
conn ected battery doesnotcome into
cont actwith vehicle parts.
R Never placemetal object sor tools ona
battery.
R Itis important thatyouobserve the
described orderofthe battery terminals
when connectin gand disconn ectingabat-
tery.
R When jump-st arting,makesurethatthe
battery poleswithidentical polarityare
conn ected.
R Itis particularly importanttoobserve the
described orderwhen connectin gand dis-
conn ectin gthe jumper cables.
R Never connectordisconn ectthe battery
termin alswhile theengine isrunnin g. G
WARNING
Batt eryacid iscaustic. Thereisarisk of
injury.
Avoid contactwith skin, eyesorclothin g.Do
not inhale anybattery gases.Donot lean
over thebattery. Keepchildren awayfrom
batteries. Washawaybattery acidimmedi-
ately withplenty ofclean water andseek
medical attention. H
Environmental
note Batt
eries containpollutants.
It is illegal todispose of
them withthehousehold
rubbish. Theymust becol-
lected separately anddis-
posed ofinan environ men-
tally responsible recycling
system. Dispose
ofbatteries inan
environ mentallyresponsible
manner. Takedischarged
batteries toaquali fiedspe-
cialist workshop ortoacol- lection
pointforused bat-
teries.
! Have
thebattery regularly checkedata
quali fiedspecialist workshop.
Comply withtheservice intervalsinthe
Maintenan ceBooklet ,or cont actaquali fied
specialist workshop formore informat ion.
! You
should haveallwork involving thebat-
tery carried outataquali fiedspecialist
workshop. Inthe except ionalcasethatitis
necessary foryou todisconn ectthe battery
yourself, makesurethat:
R switch offthe engine andremove the
Smart Key.Onvehicles withKEYLE SS-GO,
make surethattheignition isswitched
off. Check thatallthe indicator lampsin
the instr ument cluster areoff. Otherwise,
electron iccomponen ts,such asthe alter-
nator, maybedamaged.
R you first remove thenegative terminal
clamp andthen thepositive terminal
clamp. Neverswapthetermin alclamps.
Otherwise, thevehicle's electronicsystem
may bedamaged.
R in vehicles withautomatic transmission,
the transm issionislocked inposition 005D
after thebattery isdisconn ected.The
vehicle issecured againstrollingaway.
You canthen nolonger movethevehicle.
The battery andthecover ofthe positive ter-
minal clamp mustbeinstalled securelydur-
ing operation.
Comply withsafety precautions andtake pro-
tect ivemeasures whenhandling batteries. Risk
ofexplosion. Fire,
open flames andsmokin gare
prohibited whenhandling thebat-
tery. Avoid creatin gsparks. Batt
eryacid iscaustic. Avoidcon-
tact with skin, eyesorclothin g.
Wear suitable protectiveclothin g,
especially gloves,apronandface-
guard.
Rinse anyacid spills immediately
with clear water. Contact aphysi-
cian ifnecessary. 294
Bat
tery (vehicl e)Breakdown assistance

Wear
eyeprotec tion. Keep
children away. Observe
thisOperator' sManual.
For safety reasons, Mercedes- Benzrecom-
mends thatyouonly usebatter ieswhich have
been testedand approved foryour vehicle by
Mercedes- Benz.These batteriesprovide
incr eased impact protectiontoprevent vehicle
occupant sfrom sufferin gacid burns should
the batter ybe damaged inthe event ofan
accident .
In order forthe batter yto achieve themaxi-
mum possible servicelife,itmust alway sbe
sufficien tlycharged.
Like other batter ies,thevehicle batterymay
discharge overtime ifyou donot use thevehi-
cle. Inthis case, havethebatter ydisconn ec-
ted ataqualified specialist workshop. Youcan
also charge thebatter ywith acharger recom-
mended byMercedes- Benz.Contac ta quali-
fied specialist workshop forfurther informa-
tion.
Have thebatter ycondit ionofcharge checked
more frequent lyifyou usethevehicle mainly
for short tripsorifyou leave itstandin gidle
for alength yperiod. Consult aqualified spe-
cialist workshop ifyou wish toleave yourvehi-
cle parked foralong period oftime.
Only replace abatter ywith abatter ythat has
been recomm endedbyMercedes- Benz.
Remove theSmart Keyifyou park thevehicle
and donot require anyelectr icalcons umers.
The vehicle willthen usevery little energy,
thus conserving batterypower.
If the power supply hasbeen interrupted, e.g.
if you recon nectthebatter y,you willhave to:
R set the clock using themultimedia system
(see theDigital Operator' sManual)
R reset thefunct ionforfolding theexterior
mirrors in/outautomatically, byfolding the
mirrors outonce (Ypage 99) Charging
thebatt ery G
WARNIN
G
During charging andjump- starting,explosive
gases canescape fromthebatter y.There is
a risk ofan explosion.
Particularly avoidfire,open flames, creating
sparks andsmokin g.En sure there issuffi-
cient ventilation whilecharging andjump-
start ing.Donot lean over abatter y. G
WARNIN
G
Batt eryacid iscaustic. Thereisarisk of
injury.
Avoid contactwith skin,eyes orclothin g.Do
not inhale anybatter ygases. Donot lean
over thebatter y.Keep children awayfrom
batter ies.Wash awaybatter yacid immedi-
ately withplenty ofclean water andseek
medical attention. G
WARNIN
G
A discharged batterycan freez eat temper a-
tures below freezingpoint. Whenjump-start-
ing the vehicle orcharging thebatter y,
gases canescape fromthebatter y.There is
a risk ofan explosion.
Allow thefrozenbatter yto thaw outbefore
charging itor jump- starting.
! Only
usebatter ychargers withamaximum
charging voltageof14. 8V.
! Only
charge thebatter yusing thejump-
start ingconn ection point.
The jump- startingconn ection pointisin the
engine compart ment(Ypage 296).
X Open thehood.
X Connec tthe batter ycharger tothe positive
term inaland ground pointinthe same order
as when connectin gthe donor batteryin the
jump- startingprocedure (Ypage 296).
If the indicator /warninglamps donot light up
in the instrument clusteratlow temper atures,
it is very likely thatthedischarged batteryhas
froz en.Inthis case youmay neith erjump- start
the vehicle norcharge thebatter y.The service
life ofathawed-out batterymay beshort er.
The start ingcharact eristicscan beimpaired, Bat
tery(vehicle )
295Breakdown assistance Z

G
WARNING
During thechargi ngprocess ,a battery produceshydrogen gas.Ifashort circuitoccurs or
spar ksare created ,the hydrogen gascan ignite. Thereisarisk ofan explo sion.
R Make surethattheposi tive terminal ofaconnected batterydoesnotcome intocontact with
vehicl eparts.
R Never placemetal objects ortools onabattery .
R Itis impor tantthatyouobse rvethe descri bedorder ofthe battery terminal swhen connect-
ing and disconnecting abattery .
R When jump-starting, makesurethatthebattery poleswith identical polarityareconnected.
R Itis particu larlyimpor tanttoobse rvethe descri bedorder whenconnecting anddisconnect-
ing the jumper cables.
R Never connect ordisconnect thebattery terminal swhi lethe engine isrunning. G
WARNING
A discha rgedbattery canfreeze attempera turesbelow freezing point.Whenjump-starting the
vehicl eor chargi ngthe battery ,gase scan escap efrom thebattery .There isarisk ofan explo -
sion.
Allow thefrozen battery tothaw outbefore chargingitor jump-starting.
! Avoid
repeatedand lengthy starting attempts. Otherwise,the catal yticconverter couldbe
dama gedbythe non-combusted fuel.
If the indica tor/warni nglamp sdo not light up inthe instrument clusteratlow tempera tures,itis
very likelythat thedischa rgedbattery hasfrozen. Inthis case youmay neither jump-start the
vehicl enor charge thebattery .Let the battery thawfirst.Theservice lifeofathawe d-outbattery
may beshorter. Thestarting characteristics canbeimpa ired,particu larlyat low tempera tures.
Have thethawe d-outbattery checked ataqua lified speci alist worksho p.
Do not start thevehicl eusi ng arapi dchargi ngdevi ce.Ifyou rvehicl e'sbattery isdischa rged,the
engine canbejump-started fromanother vehicleor from asecond batteryusing jumper cables.
Observe thefollowi ngpoints:
R The battery isnot accessi bleinall vehicl es.Ifthe other vehicle'sbattery isnot accessi ble,
jump-start thevehicl eusi ng asecond batteryorajump-starting device.
R You may onlyjump-start thevehicl ewhen theengine andexhau stsystem arecold.
R Do not start theengine ifthe battery isfrozen. Letthe battery thawfirst.
R Only jump-start frombatterie swith a12 Vvoltag erating.
R Only usejumper cablesthat arenot dama gedand have asuffi cient cross-section andinsul a-
ted terminal clamps.
R Make surethatthetwo vehicl esdo not touch.
Make surethat:
R The jumper cablesare not dama ged.
R Non-insul atedparts ofthe terminal clampsdo not come intocontact withother metal parts
whi lethe jumper cablesare connected tothe battery .
R The jumper cablescannot comeintocontact withparts thatcanmove whentheengine isrun-
ning, suchasthe V-belt pulley orthe fan.
X Secure thevehicl eby app lying the electric parkingbrake.
X Shift thetransmissi ontoposi tion 005D.
X Turn theSmartKey toposi tion 005Ainthe ignitio nlock andremove it. Jump-star
ting
297Breakdown assistance Z