engine MERCEDES-BENZ S-CLASS 2020 Service Manual

#
Followt he instructions inthes ervice
int erva ld ispla yregarding theo il
ch ang e. *
NO
TEDama gecau sed byrefilling too
muc hengine oil To
om uche ngine oilcan damag ethe engine
or thec atalytic converter . #
Have excess engineoilremo veda ta
qu alif ied spec ialistworks hop. %
Depending onthee ngine, thec ap maybe
ins talled inthee ngine compartmen tind if‐
fe re nt locati ons. #
Turn cap 1cou nter-cloc kwiseand remo ve
it. #
Adde ngin eoil. #
Replace cap1and turnitc loc kwise asfar
as itwill go. #
Chec kthe oilleve la ga in (/ page411). Che
cking thec oolant leve l &
WARNIN GRisk ofburnsf romh otcom‐
ponent partsinthee ngine compartmen t
Cer tain com pone ntsi nt he engine compart‐
ment canbevery hot,e.g. thee ngine ,the
ra diat orand partsof thee xhau stsystem. #
Allo wthe engine tocool down and only
to uc hc om ponent partsd escr ibed in
th ef ollo wing. &
WARNIN GRisk ofscal ding from hot
cool ant
The enginecool ingsystem ispressur ized,
par ticular lywhen thee ngine iswa rm.Ify ou
open thec ap, youc ouldbe scalded byhot
coolant spraying out. #
Letthe engine cooldown beforeo pen‐
ing thec ap. #
When opening thec ap, wearprotect ive
gl ove sand safetyg lasses. #
Open thec ap slowlyt or elease pres‐
sur e. Maint
enance andcare 41
3

#
Park thev ehicle onalevel sur face. #
Checkt he coolant temp eratur edispla yint he
ins trument cluster.
The coolant temp eratur emustb eint he bot‐
to mq uartero fthe temp eratur edispla y. #
Ifnecessar y,remo vethec over. #
Slowly turnc ap 1 cou nter-cloc kwiseto
re lie ve ove rpressur e. #
Continue turning cap1count er-cloc kwise
and remo veit.
The coolan tleve lisc orrect inthef ollo wing
cases:
R Ifth ee ngine iscold, uptomar kerb ar2.
R Ifth ee ngine iswa rm,upt o0 .6in(1.5 cm)
ov er mar kerb ar2. #
Ifnecessar y,add coolant that has been
appr ovedbyM ercedes-Ben z.
R Further information oncoolant (/page486) Re
filling thew indsh ieldwasher system &
WARNIN GRisk ofburnsf romh otcom‐
ponent partsinthee ngine compartmen t
Cer tain com pone ntsi nt he engine compart‐
ment canbevery hot,e.g. thee ngine, the
ra diat orand partsof thee xhau stsystem. #
Allo wthe engine tocool down and only
to uc hc om ponent partsd escr ibed in
th ef ollo wing. &
WARNIN GDang erofburnsw hen open‐
ing theh ood
If yo uo pen theh ood when thee ngine has
ove rheat edordur ing afirei nt he engine
com partment, youc ouldcome intoc ontact
wit hh otgases orother escaping operating
fl uids. #
Beforeo pen ingtheh ood, allowthe
engine tocool down. #
Inthee vent ofafirei nt he engine com‐
par tment, keep theh ood closed and
call thef ires ervice. &
WARNIN G‑R isko ffirea nd injuryf rom
wind shieldwa sher concen trat e
Wi ndsh ield wa sher concen trat ei sh ighl y
fl ammab le.Itcoul dign itei fitc om esinto
con tact with hote ngine component partsor
th ee xhau stsystem. #
Mak esuret hat nowindshi eldwasher
concen trat es pills outnext to thef iller
open ing. 41
4
Maint enance andcare

&
WARNIN GRisk ofexplosion from hydro‐
ge ng asign iting
Ab atteryg ene ratesh ydr ogen gasd uring the
ch argin gp roce ss. Ifth er ei sas hortcircuit or
spar ksstar tt of orm, ther ei sad angerofthe
hy drog en gasigniting. #
Mak esuret hat thep ositiv eterminal of
th ec onnect edbatt eryd oes notc ome
int oc ontact with vehicle parts. #
Neverp lace me talo bje ctso rtools ona
batt ery. #
When connectin gand disconn ectingthe
batt ery, yo um usto bse rvet he descr i‐
bed order fort he batt eryc lam ps. #
When giving star tin ga ssis tance, alwa ys
mak esuret hat youo nly con nectbat‐
te ry term inals withident icalpolar ity. #
Dur ing star tin ga ssis tance, youm ust
obse rvet he descr ibedorder forc on‐
necting anddisconnecting thej um per
cables. #
Donotc onnect ordiscon necttheb at‐
te ry cla mp sw hile thee ngine isrunning . &
WARNIN GRisk ofexplosion during
ch argin gp roce ss and star tin ga ssis tance
Dur ing thec har ging process andstar tin g
assis tance, theb atterym ayrelease anexplo‐
siv eg asmix ture. #
Avoid fire ,o pen flames ,creating spar ks
and smoking. #
Mak esuret hat ther ei ss ufficie ntventi‐
la tio nd uringt he chargin gp roce ss and
dur ing star tin ga ssis tance. #
Donotlea no verab attery. &
WARNIN GRisk ofexplosion from afro‐
zen battery
Ad ischar gedb atterym ayfreeze attemp era‐
tur es slightl yabove orbelo wfreezing point.
Dur ing star tin ga ssis tance orbatter yc harg‐
ing, batteryg as ma ybereleased. #
Alw ayst hawaf roze nb atte ry out firs t
bef orec harging itor per form ing star t‐
ing assis tance. If
th ei ndicat or/warning lampsinthei nstrument
clus terd on otlight up atlowt em per atur es,itis
ve ry likelyt hat thed ischar gedb atteryh asfro‐
zen .Int his case youm ayneither jump-start the
ve hicle norcharge theb attery.
The service lifeo fab atteryt hat has been
th awe dmaybe dramaticall yshor tened .The
st ar tin gc har acteristics maybeimp aired, espe ‐
ciall yatlow temp eratur es.
It is recomme ndedthat youh ave athawe db at‐
te ry checkeda taq ualifiedspec ialistworks hop.
Plug-in hybrid: besur etoo bser vethen otes in
th eS upplement .Other wise, youm ayfailto rec‐
ogni zedangers.
Al lv ehic les
* NO
TEDama gecau sed bynum erou so r
ex tende dattem ptst os tart thee ngine Nu
me rous orextende dattem ptst os tart the
engine maydamag ethe cat alytic converter
due tonon-co mbusted fuel. #
Avoid numer ousand extende dattem pts
to star tt he engine. 43
4
Breakdo wnassis tance

#
Dur ing star ting assistance :st ar tt he
engine ofthed onor vehicle andruna tidle
spe ed. #
Connect then egativ epole ofthed onor bat‐
te ry and grou nd point 5 ofyour ow nv ehicle
by usin gthe jum per cable/c harging cable.
Begin withthe donor batteryf irst . #
During star ting assistance :st ar tt he
engine ofyour ow nv ehicle. #
Dur ing thec har gingproce ss:st ar tt he
ch argin gp roce ss. #
Dur ing star ting assistance :le tt he engines
ru nf or severalm inut es. #
Dur ing star ting assistance :bef ored iscon‐
necting thej um per cable, switchonane lec‐
tr ical consumer inyour ow nv ehicle, e.g.the
re ar wind owdefr ostero rlighting.
When thes tartin ga ssis tance/c harging proce ss
is com plet e: #
First,r emo vethej um per cable/c harging
cable from ground point 5and negative
pole ofthed onor battery, then from positiv e
clam p4 and positiv epole ofthed onor bat‐ te
ry.B egi ne acht imew itht he cont acts on
yo ur ow nv ehicle firs t. #
Afterr emo ving thej um per cable/c harging
cable, closecover3 ofposi tivec lam p4.
Fu rther information canbeobt ained ataq uali‐
fi ed specialis tworks hop. Re
plac ingthe 12Vb attery #
Obs erve then otes on the1 2Vb attery
(/ page431).
Mer cedes-Benz recomme ndsthat youh avet he
12 Vb atteryr eplaced ataq ualif iedspec ialist
wo rkshop, e.g.atan aut hor ized Mercedes-Benz
Cent er.
Obser vethef ollo wing notesi fy ou wantto
re place theb atteryy our self:
R Alw aysr eplace afaulty battery wit hab attery
whic hmeets thes pecif icvehicle requ ire‐
men ts.
The vehicle iseq uipped witha nA GM tech nol ‐
ogy batter y( Ab sorbe ntGlas sM at)o ral ith‐
iu m- ionb attery. Fu llve hicle functionality is onl
yguar anteed witha nA GM batteryo rlith‐
ium-ion battery. Fo rs afet yr easons,
Mer cedes- Benzrecomme ndsthat youo nly
use batteries whic hhave been tested and
appr ovedfor your vehicle byMer cedes-Ben z.
R Carryove rdetac hable parts,s uc ha svent
ho ses, elbowfittingo rterminal covers from
th eb atteryb eing replaced.
R Mak esuret hat thev ent hose isalw aysc on‐
nect edtotheo riginal opening onthes ide of
th eb attery.
Ins tallan ye xisting orsupp lied cellca ps .
Ot he rw ise, gases orbatt erya cid could
escape.
R Mak esuret hat detach able partsarer econ ‐
nec tedi nt he same way. To
ws tarting ortowing away Pe
rm itted towing methods Plug-
inhybrid: obser vethen otes intheS upple‐
ment .Other wise, youm ayfailto recogni zedan‐
ge rs. 436
Breakdo wnassis tance

To
wing thev ehic lewit hbotha xlesonthe
gr ound #
Obser vethen otes on thep ermitt edtowing
me thods (/page436). #
Mak esuret hat theb atteryi sc onnect edand
ch arge d.
When theb atteryi sd ischar ged, thef ollo wing
actions cannotbep erform ed:
R The engine cannotbe star ted
R The electr icpar king brak ec ann otbe
re leased orapplied
R The automat ictransmissio ncanno tb es hif‐
te dt op osition 005Cor005D
% Ifth ea utomatic transmiss ioncann otbe shif‐
te dt op osition 005C,orthe multifunction dis‐
pla yint he instrument clusterd oes nots how
an ything, have thev ehicle transpor teda way
( / pag e439). Atow ing vehicle withlifting
eq uipment isrequ ired forv ehicle transpor ta‐
tio n. *
NO
TEDama gedue totowing away at
exc essiv elyh igh speeds orove rlong dis‐
ta nces The
drivet ra in could bedamag edwhen tow‐
ing atexc essiv elyhigh speeds orover long
dis tances. #
Atow ing speed of30 mph(50 km/h)
mus tnotbe exc eeded. #
Atow ing distan ceof30 miles(50 km)
mus tnotbe exc eeded. &
WARNIN GRisk ofacci dent whentow ing
av ehicle whichist oo hea vy
If th ev ehicle beingtow- star tedo rtowe d
aw ay ishea vier than thep ermissible gross
mass ofyour vehicle, thef ollo wing situations
can occur :
R The towing eyem aybecome detach ed.
R The vehicle/tr ailercombination may
sw erve oreve novertur n. #
Ifano ther vehicle istow- star tedo r
to we da way,its weight mustnotexc eed th
ep ermissible gross mass ofyour ow n
ve hicle. If
av ehicle mustbetow -sta rted ortowe da way,
its weight mustnotexc eed thep ermissible gross
mass ofthet ow ing vehicle. #
Information onthep ermissible gross mass of
th ev ehicle canbefound onthev ehicle iden‐
tif ication plate(/pag e480). #
Donoto pen thed rive r's door orfront
passeng erdoor ,other wise thea utomatic
tra nsmiss ionautomaticall yshiftsto position
005D. #
Installth et ow ing eye( /pag e441). #
Fasten thet ow bar.
* NO
TEDama gedue toinc orrect connec‐
tion ofthet ow bar #
Onlyconnect thet ow rope ortowb arto
th et ow ing eyes. #
Deact ivat et he aut omatic locking mechanism
(/ page71). 438
Break down assista nce

#
When transpor ting,ensur ethat :
R The vehicle hasbeen loaded onto
th et ranspor terc orrectl y
R The vehicle issecur edatall four
wheel swiths uitable tensi oni ng
st ra ps
R The maximum permissible speedof
35 mph(60 km/h)isn otexc eeded
when transpor ting *
NO
TEDama getothev ehicle from secur‐
ing itincor rectl y #
Afterl oa ding, thev ehicle mustbe
secur edon allfour wheel s.Ot her wise,
th ev ehicle couldbedamag ed. #
Am inimum distance of4in( 10 cm)
up wa rdsa nd 8in( 20 cm) down wards
mus tbek epttot he transpor tplatf orm. Tr
ans portleve lisn otavailable fort he follo wing
ve hicles:
R Mer cedes- AMGvehicles
R Vehicles withM AGICBO DY CONTR OL %
Depending onthem odel, button1 isloca‐
te di nt he contr olpanel between thes teer ing
wheel andthed rive r's door . #
Toactiv atet ranspo rtleve l:pr ess butt on
1.
Indic ator lam p2 lights up.
The vehicle israised by1.2i n( 30 mm) com‐
par edtothen ormal leve l. #
Press butt on1 again and hold itfora tlea st
fi ve seconds.
The vehicle israised from ther aised leve lto
th et ranspor tleve l.
The transpor tleve lisr eac hed when indicat or
lam p2 flashes andtheMax. Speed 22mph
displa ymessag eappear sint he multifunction
displa y.
The vehicle islowe reda gain inthef ollo wing sit‐
uations:
R When driving faster than 22 mph(35 km/h).
R Afters ele cting adrive progr am using the
DY NA MIC SELE CTswitc h.
The vehicle isthen adjus tedt ot he height of
th el asta ctiv edrive progr am. #
Secur ethe vehicle onallfour wheel safter
loading. #
Todeac tivatet ranspo rtleve l:star tt he
engine whenthev ehicle isat as tands till.
If transpo rtleve lisa ctivat ed, indic ator lam p
2 flashes . 44
0
Brea kdo wnassista nce

*
NO
TEDama getothev ehicle dueto
inc orrect useo fthe towing eye When
atow ing eyei su sed toreco verav ehi‐
cle, thev ehicle maybed amag edinthep roc‐
ess. #
Onlyusethet ow ing eyet ot ow away or
to ws tartthe vehicle. To
w- star ting thev ehic le(em erge ncy engine
st ar t) *
NO
TEDama getothea utomatic trans‐
mission duetotows tartin g The
automat ictransm issionmaybe damag ed
in thep rocess oftows tartin gv ehicles with
aut omatic transmission. #
Vehicles witha utomatic transmission
mus tnotbe tows tarted. #
Vehicles witha utomatic transmission must
no tb etow -sta rted. Electr
icalfuses No
teso ne lectr icalfuses &
WARNIN GRisk ofacci dent andinjury
due tooverloaded lines
If yo um anipulat eorbridg eaf aulty fuseorif
yo ur eplace itwit haf usewithah igher
am per age, thee lectr icline could beove rloa‐
ded.
This could result inaf ire. #
Alwa ys replace faulty fuseswiths pec i‐
fi ed newf uses containin gthe cor rect
am per age. *
NO
TEDama gedue toinc orrect fus es Electr
icalcom pone ntsorsystems maybe
damag edbyinc orrect fus es, ortheir func ‐
tion ality maybesignif icant lyim pair ed. #
Onlyusefuses that have been approved
by Mer cedes-Ben zand whic hhave the
cor rect fus erating. Bl
ow nfuses mu stbe replaced withfuses ofthe
same rating ,which youc an recogni zeby the
colo rand fuserating. Thef user atings andf ur‐
th er information tobe obser vedc an be found in
th ef use assignmen tdiagr am.
* NO
TEDama geormalfunct ionscaused
by mois ture Mois
turem aycause damagetothee lectr ical
sy stem orcause itto malfu nction. #
When thef use boxiso pen, makesure
th at no mois turec an ent erthef use
bo x. #
When closing thef use box,mak esure
th at thes eal ofthel id isposition edcor‐
re ctly onthef use box. If
th en ewlyinser tedf use also blows,have the
cau setrace dand rectif ieda taq ualifiedspec ial‐
is tw orks hop.
Ensur ethe follo wing beforer eplacing afuse:
R The vehicle issecur edagains trolling away.
R Allelectr icalconsu mersaresw itched off. 44
2
Brea kdo wnassista nce

R
The ignition isswitc hedoff.
The electr icalfuses arel ocat edinthef ollo wing
fuse boxes:
R Fuse boxint he engine compartment onthe
dr iver's side (/page443)
R Fuse boxo nthe driver's side ofthec ockpit
(/ page444)
R Fuse boxint he front passeng erfoot we ll
(/ page444)
R Fuse boxint he trunk onther ight- hand side
of thev ehicle, whenviewe dint he direction
of tra vel(/ pag e445) Ope
ningand clos ing the fuseboxinthe
en gine comp artment Re
quirement s:
R Obser vethen otes on electr icalfuses
(/ page442).
R Have thef ollo wing tools readil yavailable:
- Adryclo th
- Ascrew driver Opening &
WARNIN GRisk ofinju ryfrom using the
winds hieldwiper swhile thee ngine hood
is open
When thee ngine hoodisopen andthew ind‐
shield wipersaresetinm otion ,you can be
trap ped bythew iper linkage. #
Alw ayss witc hoffthew indshield wipers
and ignition beforeo pening thee ngine
hood. #
Release retainin gclips 1.
Pull cover2 up. Br
eakdo wnassi stanc e44
3

Se
tting upthef olding chock Pr
epa ring thev ehic leforaw heelch ang e Re
quirement s:
R The requ ired tire-c hang etool kitisavailable.
If yo ur vehicle isno te quipped withthe tire-
ch ang etool kit, consult aqualif iedspec ialist
wo rkshop tofind outa bout suitab letools. R
The vehicle isno to nas lope.
R The vehicle ison solid, non-slipper yand leve l
gr ou nd . #
Thee lect ricp arkin gb rake isapplied man‐
uall y. #
Movethef ront wheels tothes trai gh t-ah ead
po sition . #
Shiftt he transmission toposition 005D. #
Vehicl eswith AIRB ODYC ONT ROLo r
MA GIC BODY CONT ROL:Se tthe nor mal
ve hicle leve l. #
Swit chofft he engine. #
Mak esuret hat thee ngine cannotbe star ted. #
Place choc ks orother suitable items under
th ef ront and rear ofthew heel that isdiago‐
nall yoppos itet he wheel youw ish tochang e. #
Remo vetheh ub caps ifneces sary
(/ page471). #
Raise thev ehicle (/page472). Re
mo ving and inst alli ng hub caps Re
quirement s:
R The vehicle isprepar edforaw heelchang e
(/ page471).
Plas tichub cap #
Toremo ve:tur nthe cent ercovero fthe hub
cap count er-cloc kwise andremo vetheh ub
cap. #
Toins tall: makesuret hat thec ent ercover
of theh ub cap istur ned count er-cloc kwise. Wheels
andtires 47
1

The
follo wing canbeused inthev ehicle without
re strictions :
R RFtransm ittersw itham aximum trans mis‐
sion output ofup to100m W
R RFtransmi tter sw itht ransmi tter freq uenci es
in the3 80 -410 MHz freq uency bandanda
maximu mtransmi ssionoutpu tofupt o2 W
(tr unk edradio system/T etra )
R mobil ephones (2G/3G /4G)
Ther eareno restrictions whenpositioning the
ant enn aonthe outside ofthev ehicle fors ome
wav ebands.
This applies tothef ollo 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 Ao nly)
1 Maximum permissible gross vehicle weight
2 Maxim umpermissible front axle load
3 Maxim umpermissible rear axle load
4 Paint code
5 VIN (vehicle identificat ion numb er) 480
Tech nica ldata