engine MERCEDES-BENZ GLC SUV 2020 Repair Manual

Ex
am ple: eng inecompar tment #
Slide cover1 ofposi tiveclam p2 onthe
jum p-starting con nection point inthedir ec‐
tion ofthear row . #
Con nect posi tiveclam p2 onyour vehicle to
th epositiv epole ofthedonor batteryusing
th ejum per cable/c harging cable. Always begin
withpositiv eclam p2 onyour ow n
ve hicle firs t. #
During star ting assistance :st ar tth e
engine ofthedonor vehicle andrunat idle
spe ed. #
Connect theneg ativepole ofthedonor bat‐
te ry and grou nd point 3 ofyour ow nve hicle
by usin gth ejum per cable/c harging cable.
Begin withth edonor batteryfirs t. #
During star ting assistance :st ar tth e
engine ofyour ow nve hicle. #
Dur ing thech argin gpr oc ess :st ar tth e
ch argin gpr oce ss. #
Dur ing star ting assistance :le tth eengines
ru nfo rse veralmin utes. #
Dur ing star ting assistance :bef oredis con‐
necting thejum per cable, switchon anelec‐
tr ical consumer inyour ow nve hicle, e.g.the
re ar wind owheat eror lighting.
When thest ar tin gassis tance/c harging proce ss
is com plet e, per form thefo llo wing steps: #
First,re mo vethejum per cable/c harging
cable from ground point 3and theneg ative
pole ofthedonor battery, then from positiv e
clam p2 and thepositiv epole ofthedonor
batt ery. Begi nea ch tim ewi th thecon tacts
on your ow nve hicle firs t. #
Afterre mo ving thejum per cable/c harging
cable, closecover1 ofposi tiveclam p2.
Fu rther information canbeobt ained ataqu ali‐
fi ed specialis two rkshop. Re
plac ingthe 12Vbatt ery #
Obs erve theno teson the12 Vbatt ery
(/ page44 3).
Mer cedes -Benz recomme ndsthat youha ve the
12 Vbatt eryre placed ataqu alif ied spec ialist
wo rkshop, e.g.atan aut hor ized Mercedes-Benz
Cent er. 44
8
Brea kdo wnassista nce

Ins
tallin gth eto wing eye #
Press themar kon cover1 inwa rdsand
re mo ve. #
Screw intheto wing eyecloc kwiseasfaras it
wil lgo and tight en.
Ve hicl eswith atraile rhitc h:Vehicles witha
tr ailer hitchdo notha ve are ar brac ketfo rth e to
wing eye. Fasten theto w bar tothetrailer
hitc h.
% Mak esur eth at cover1 eng ages inthe
bum perwhen youre mo vetheto wing eye.
* NO
TEDama getotheve hicle dueto
inc orrect useof theto wing eye When
ato wing eyeis used toreco vera ve hi‐
cle, theve hicle maybe damag edinthepr oc‐
ess. #
Onlyuse theto wing eyeto tow aw ay or
to w star tth eve hicle. To
w star ting theve hicl e(eme rgency engine
st ar t) Ve
hicl eswith automatic transmiss ion
* NO
TEDama getotheaut omatic trans‐
mission duetotow star tin g The
automat ictransm issionma ybe damag ed
in thepr ocess oftow star tin gve hicles with
aut omatic transmission. #
Vehicles withaut omatic transmission
mus tno tbe tow star ted. #
Vehicles withaut omatic transmission must
no tbe tow- star ted. Electr
icalfuses No
teson electr icalfuses &
WARNIN GRisk ofacci dent andinjury
due tooverloaded lines
If yo uman ipulat eor bridg eafa ulty fuse orif
yo ure place itwit hafuse withahigher
am per age, theelectr icline could beove rloa‐
ded.
This could result inafire . #
Alw aysre place faulty fuseswit hspec i‐
fi ed newfuses containin gth ecor rect
am per age. 45
4
Brea kdo wnassista nce

*
NO
TEDama gedue toinc orrect fus es Electr
icalcom pone ntsorsystems maybe
damag edbyinc orrect fus es, ortheir func ‐
tion ality maybe signif icantlyim pair ed. #
Onlyuse fuses that have been approved
by Mer cedes-Ben zand whic hha ve the
cor rect fus era ting . Blo
wn fuse smu stbe replaced withfuses ofthe
same rating ,wh ich yo ucan recogni zeby the
colo rand fusera ting .The fuse rating sand fur‐
th er information tobe obser vedcan befound in
th efuse assignmen tdiagr am.
Fu se assignment diagram: onthefuse boxin
th ecar gocom partmen t(/ page45 7).
* NO
TEDama geormalfunct ionscaused
by mois ture Mois
turema ycause damagetotheelectr ical
sy stem orcause itto malfu nction. #
When thefuse boxis open, makesur e
th at no mois turecan enterthefuse
bo x. #
When closing thefuse box,mak esur e
th at theseal ofthelid isposition edcor‐
re ctly onthefuse box. If
th ene wlyinser tedfuse alsoblows,ha ve the
cau setrace dand rectif ied at aqu alif ied spec ial‐
is two rkshop.
Ensur eth efo llo wing beforere placing afuse:
R The vehicle issecur edagains tro lling away.
R Allelectr icalconsu mersar esw itched off.
R The igniti onissw itched off.
The electr icalfu ses arelocat ed invarious fuse
bo xes:
R Fuse boxin theengine compartmen ton the
dr iver's side (/page455)
R Fuse boxon thedr iver's side ofthecoc kpit
(/ page456)
R Fuse boxin thefront passeng erfoot we ll
(/ page456) R
Fuse boxin thecar gocom partmen ton the
ri ght-h andside oftheve hicle, when viewe d
in thedir ect ion oftra vel(/ page45 7) Opening
andclosing thefus ebo xin the
engine compartmen t Re
quirement s:
R Adr yclo thand asc rewdr iver areav ailable.
Obse rveth eno teson electr icalfuses
(/ page45 4).
Opening &
WARNIN GRisk ofinju ryfrom using the
winds hieldwiper swhile theengine hood
is open
When theengine hoodisopen andthewind‐
shield wipersar ese tin mo tion ,yo ucan be
trapped bythewiper linkage. #
Alw aysswitc hof fth ewindshield wipers
and ignition beforeopening theengine
hood. Br
eakdo wnassis tance 45
5

4
Folding choc k
5 Alignmen tbolt
6 Socketwr enc hfo rra tche t
Se ttin gup the folding chock Pr
epa ring theve hicl efo ra wh eelch ang e Re
quirement s: R
The requ ired tire-c hang eto ol isavailable. If
yo ur vehicle isno teq uipped withth etir e-
ch ang eto ol kit, consult aqu alif ied spec ialist
wo rkshop tofind outab ou tsu itab letools.
R The vehicle isno ton aslope.
R The vehicle ison solid, non-slipper yand leve l
gr ou nd . #
Apply theelectr icpar king brak emanually . #
Movethefront wheels tothest ra ight -ahead
posit ion. #
Vehicl eswith automatic transmiss ion:
Shif tint oposi tion 005D. #
Vehicl eswith leve lcontr olsystem: Setth e
nor malve hicle leve l(/ page21 6). #
Swi tchof fth eengine. #
Mak esur eth at theengine cannotbe star ted. #
Place choc ks orother suitable items under
th efront and rear ofthewheel that isdiago‐
nall yoppos ite th ewheel youwish tochang e. #
Remo vethehub caps ifneces sary
(/ page483). #
Raise theve hicle (/page48 4). Re
mo ving and inst alli ng hub caps Re
quirement s:
R The vehicle isprepar edfora whee lch ang e
(/ page48 3).
Pla stic hub cap #
Toremo ve:tur nth ecent ercoverof thehub
cap count er-cloc kwise andremo vethehub
cap. #
Toins tall: makesur eth at thecent ercover
of thehub capistur ned count er-cloc kwise. #
Position thehub capand turnth ecent er
co vercloc kwise untilthehub capengages
ph ysicall yand audibly . Wheels
andtires 483

Alum
inum hubcap #
Toremo ve:po sitio nsoc ket2 onhubcap
1.
% The socketcan befound inthetir e-c hang e
to ol kit. #
Position wheel wrenc h3 onsoc ket2. #
Usingwheelwr enc h3, turnhu bcap 1
cou nter-clo ckwise andremo veit. #
Toins tall: posit ionhub cap1and turnunt il
it is com pletely flush withth ewheel. #
Position socket2 onhubcap 1. #
Attach wheel wrenc h3 tosoc ket2 and
tig hten thehub capclockwise.
Specif iedtight ening torq ue: 18lb-f t
(25 Nm). Ra
ising theve hicl ewhe nch angi ngawhe el Re
quirement s:
R Ther ear eno per sons intheve hicle.
R The vehicle hasbeen prepar edfora whee l
ch ang e(/ page48 3).
Im por tant noteson using thejac k:
R Use onlya ve hicle-specif icjac kth at has
been approvedby Mer cedes-Ben zto raise
th eve hicle.
R The jackis onl ydesigned forra ising and
holdin gth eve hicle fora shor ttime whilea
whee lis being chang edand notfo rmaint e‐
nance workund ertheve hicle.
R The jackmus tbe placed onafirm ,fl at and
no n-slip surface. Ifneces sary,use alar ge,
fl at, load- bearing,no n-slip unde rlay . R
The foot ofthejac kmus tbe position edverti‐
call yunder thejac ksuppor tpoint . Ru
les ofcon duct when theve hicle israised:
R Neverpla ceyour han dsorfeet und erthe
ve hicle.
R Neverlie under theve hicle.
R Donotst ar tth eengine anddonotre lease
th eelectr icpar king brak e.
R Donotopen orclose anydoor sor theta il‐
ga te. 48
4
Wheels andtires

The
follo wing canbeused intheve hicle without
re strictions :
R Two-w ayradios withamaximum transmis ‐
sion output ofup to100mW
R RFtransmi tter swit htransmi tter freq uenci es
in the380 -41 0MHz freq uency bandanda
maximu mtransmi ssionoutpu tof up to2W
(tr unk edradio system/T etra )
R Mobile phones (2G/3G/4G)
Ther ear eno restrictions whenpos itioning the
ant enn aon theoutside oftheve hicle forsome
wav ebands.
This applies tothefo llo wing wavebands:
R Trunk edradio system/T etra
R 70cm freq uency band
R 2G/3G /4G Ve
hicl eiden tificati onplat e,VIN and engine
number overview
Ve hicl eiden tificati onplat e Ve
hicle identif ication plate(US Aonl y)
1 Perm issible gros swe ight
2 Perm issible front axle load
3 Perm issible rear axle load
4 Paint code
5 VIN (vehicle identificat ion numb er) 49
4
Tech nica lda ta

Ve
hicle identif ication plate(Canada only)
1 Perm issible gros swe ight
2 Perm issible front axle load
3 Perm issible rear axle load
4 Paint code
5 VIN (vehicle identificat ion numb er)
The permissib legross vehicle weight ismade up
of theve hicle weight ,all vehicle occupants, the
fuel andtheload. Themaximum gross axle
we ight rating isthemaximum weight that can be
car ried on one axle (front orrear axle ). Ne
verexc eed theper missible gross vehicle
we ight orthemaximum gross axle weight rating
fo rth efront orrear axle .
VIN infront oftheright- hand front seat 1
Imprint ed VIN (vehicle identification number )
2 Floor covering Ad
diti onalplat es 1
Engine numberstam ped intoth ecr ankc ase
2 Platewit hinf ormation aboutemissions test‐
ing, including confirm atio nof emis sions
guideli nesattheU. S. feder alleve las wellas
fo rCa lifor nia
3 VIN (vehicl eidentif icationnumber) asalab el
at thelowe redg eof thewindshield Te
ch nica lda ta 495

#
Donotsw allo w fuel or letit come into
cont actwith skin, eyes orclo thing. #
Donotinhale fuelvapor . #
Keep childr enaway from fuel. #
Keep door sand windo wsclos edduring
th ere fuel ingprocess.
If yo uor other people comeintocont actwith
fuel, obser vethefo llo wing: #
Imm ediat elyrinse fuelof fyo ur skin wit h
soap andwater. #
Iffuel comes intocont actwithyo ur
ey es, immediat elyrinse them thor‐
oughl ywit hclean water.Seek medical
att entio nimm ediately . #
Ifyo usw allo wfuel, seek medicalatten‐
tio nimm ediat ely. Do notind uce vomit‐
ing. #
Cha ngeimmedi ately out ofclo thing that
has com eint ocon tact with fuel . Fu
el Inf
orma tion onaddit ives ingasoline
Obser vetheno teson oper ating fluids
(/ page49 6).
* NO
TEDama gefrom use ofunsu itabl e
add itives Ev
en smal lamou ntsofthewr ong additiv e
ma ylead tomalfu nctions occurring. #
Only addcle ani ng additiv es recomme n‐
ded byMer cedes-Ben zto thefuel. Mer
cedes- Benzrecomme ndsthat youuse fuel
br and sth at have addit ives.
In som ecoun tries, thefuel available mayno t
ha ve suf ficie ntadditiv es. Residue could buildup
in thefuel injec tionsystem asare sult. Inthis
case, incon sult ation withan aut hor ized
Mer cedes -Benz Cent er,th efuel maybe mix ed
wit hth ecleanin gadditiv ere comme ndedby
Mer cedes-Ben z.Be sureto obser vetheno tes
and mixing ratio ssp eci fied on thecon tainer . Ta
nk cont entand fuel reser ve
Cap acity Mod
el Total cap acity
Al lmo dels 17.4 gal(66. 0liter s) Model
Ofwhic hre ser ve
All mod els1 .8gal(7 .0 liter s) Engine
oil No
teson engine oil
Obser vetheno teson oper ating fluids
(/ page49 6). Te
ch nica lda ta 49
7

*
NO
TEEngi nedama gecau sed byan
inc orrect oil filt er ,inc orrect oil oraddi‐
tiv es #
Donotus eengi neoilsor oil filt er sot her
th an those whic hmee tth especif ica‐
tion sneces saryfo rth epr escr ibed
ser vice interva ls. #
Donotalt er theengine oiloroil filt er in
or der toachie velong erchang eint erva ls
th an presc ribed. #
Donotuse additiv es. #
Have theengine oilchang edafte rth e
pr escr ibed interva ls. Mer
cedes -Benz recomme ndsthat youha ve the
oil chang ecar ried out ataqu alif ied spec ialist
wo rkshop.
Fu rther information onengine oiland oilfilt er sis
av ailable atthefo llo wing locations:
R IntheMer cedes- BenzSpecif ication sfo r
Oper ating Fluids byent ering thedesignation :
- Athttp: //be vo.mer cedes-b enz.com
- IntheMer cedes- BenzBeVoapp R
ataqu alif ied spec ialistwo rkshop
Quality andcapacity ofengine oil
MB-F reigabe orMB- Appr oval Gasol
ineeng inesE ngineoilspecif ica‐
tions
All models 229.51,229 .52,
229 .61
229 .71* *
Re comme ndedforlo we stpossible fuelcon‐
sum ption (lowe stSA Evis cos ityclassineach
case ;obs erve possible restrictions ofthe
appr ovedSA Evis cos ityclasse s).
To achie vethelowe stpossible fuelconsum ption,
it is recomme ndedtouse theengine oilspecif i‐
cation smar kedin theta ble forth elowe stSA E
viscosi tyclass .Po ssible restrictions ofthe
appr ovedSA Evis cos ityclasse smu stbe
obser ved.
The follo wing values referto an oilchang e,
inc ludin gth eoil filt er . Capa
city Model
Capacity
All models 6.3US qt(6.0liter s) No
teson brak efluid Obser
vetheno teson oper ating fluids
(/ page49 6). &
WARNIN GRisk ofan acci dent dueto
va por pockets form ing inthebr ak esy s‐
te m
The brak efluid constantly absor bsmoi stur e
fr om theair .This lowe rstheboiling pointof
th ebr ak efluid. Ifth eboiling pointistoolow,
va por pockets ma yfo rm inthebr ak esy stem
when thebr ak es areapplied hard.
This causes thebr aking effect to be
im pair ed. #
Have thebr ak efluid rene we dat the
specif iedinterva ls. 498
Tech nica lda ta

Ha
ve thebr ak efluid regular lyreplaced ata
qu alif ied spec ialistwo rkshop.
Onl yuse brak efluid appr ovedby Mer cedes-Ben z
accor dingtoMB-F reigabe orMB- Appr oval 33 1.0.
Yo ucan obtain further information onbrak efluid
in thefo llo wing places:
R intheMer cedes- BenzSpecif ication sfo r
Oper ating Fluids
- athttp: //be vo.mercedes-b enz.com
- intheMer cedes- BenzBeVoApp
R ataqu alif ied spec ialistwo rkshop Cool
ant No
teson coolant
Obser vetheno teson oper ating fluids
(/ page49 6). &
WARNIN G‑Ri sk offire and injuryfrom
ant ifreez e
If ant ifreez ecom esintocon tact with hot
com ponent partsintheengine compart‐
ment ,it ma yignit e. #
Allo wtheengine tocool down before
ad ding anti freeze . #
Makesur eth at no ant ifreez espills out
ne xt to thefiller open ing. #
Thor oughl yclean offan yant ifreeze
fr om com pone ntpar tsbef orest ar tin g
th eve hicle. *
NO
TEDama gecau sed byinc orrect cool ‐
ant #
Onlyad dcool antthat has been pre‐
mix edwithth ere qu ired ant ifreeze pro‐
te ction.
Inf ormati ononcool antisavailable atthefo l‐
lo wing locations:
R IntheMer cedes- BenzSpecif ication for
Oper ating Fluids 310.1
- Athttp: //be vo.mer cedes-b enz.com
- IntheMer cedes- BenzBeVoapp
R Ataqu alif ied spec ialistwo rkshop *
NO
TEOverhea ting athigh outsid ete m‐
per atur es If
an inapp ropr iat ecoolant isused, the
engine cooling system isno tsuf ficie ntlypr o‐
te cted agains tov erheating andcorrosion at
high outside temp eratur es. #
Alw aysuse coolant approvedby
Mer cedes-Ben z. #
Obser vetheins truction sin the
Mer cedes-Ben zSpecif ications forOper‐
ating Fluids310.1. Ha
ve thecoolant regular lyreplaced ataqu alif ied
spec ialistwo rkshop.
The propor tionofcor rosion inhibit or/antifr eeze
concen trat ein theengine cooling system should
be:
R aminimum of50% (antifr eezeprotect ion
do wn toappr oximat ely-3 5°F (-37°C))
R amaxim umof55% (antifreeze protect ion
do wn to-49 °F(-45 °C)) Te
ch nica lda ta 499