engine MERCEDES-BENZ S-CLASS COUPE 2021 Repair Manual

Onl
yuse products approvedby Mer cedes-Ben z.
Yo ucan iden tifyoperatin gfluids approvedby
Mer cedes-Ben zby thefo llo wing inscript ions on
th econ tainer :
R MB- Freig abe (e.g. MB-Freig abe 229. 51)
R MB- Appr oval (e. g.MB- Approva l229 .51)
Fu rther information onappr ovedoper ating flu‐
ids:
R intheMer cedes- BenzSpecif ication sfo r
Oper ating Fluids athttps:/ /bevo.mercedes-
benz.co m(byen tering thedesignation )
R intheMer cedes- BenzSpecif ication sfo r
Oper ating Fluids intheMer cedes- BenzBeVo
App (byent ering thedesignation )
R ataqu alif ied spec ialistwo rkshop Fu
el No
teson fuel grades forve hicl eswith aga s‐
oline engine
Obser vetheno teson oper ating fluids
(/ page39 9). *
NO
TEDama gecau sed bythewr ong fuel Ev
en small amounts ofthewr ong fuelcould
re sult indamag eto thefuel system, the
engine andtheemission control system. #
Onlyre fuel withlow- sulfur gasoline.
This fuelmaycont ainupto10%ethanol by
vo lume. Your vehicle issuit able foruse with
E1 0fuel .
Ne verre fuel withone ofthefo llo wing fuels:
R Dies el
R Gasoline withmor eth an 10%ethanol by
vo lume, e.g.E15, E8 5,E100
R Gasoline withmor eth an 3% methano lby
vo lume, e.g.M15,M30 ,M85 ,M1 00
R Gasoline withadditiv escon tainin gme tal
If yo uha ve acc iden tally re fuel edwithth e
wr ong fuel: #
donotswit chtheignition on. #
Consult aqu alif ied spec ialistwo rkshop. If
th eav ailable fuelisno tsuf ficie ntly low in sul‐
fur ,th is can produce unpleasant odors.
Onl yre fuel withfuel that has atleas tth eoct ane
number specifiedintheins truction labelinthe
fuel filler flap (/ page14 3).
If yo uwa ntmaxim umengine output:onl y
re fuel withunle adedpr emiu mgrade gasoline
wit han oct ane number ofat leas t91 AKI/
95 RON.
As ate mp orarymeasur e,ifth ere comme nded
fue lis no tav ailable, youma yalso useunle aded
re gular gasoline withan oct ane number ofat
leas t87 AKI/9 1RO N.
* NO
TEPrema turewe arthro ugh unleaded
re gular gasoline Un
leade dre gular gasoline cancause the
engine towe armor equ ickl yand impair lon‐
ge vity and perform anc e.
If unle aded premium grade gasoline is
una vailable andyouha ve torefuel using
unle adedre gular gasoline with87 AKI/
91 RON: 400
Tech nica lda ta

#
Onlyfill th efuel tank tohalf fullwith
unleaded regular gasoline andtopup as
soon aspossible withunleaded pre‐
mium grade gasoline. #
Donotdr ive at themaximum speed. #
Avoid sudden accelerationandengine
speeds over3000 rpm. This
mayre duce engineoutput andincrease fuel
con sum ption. Neverre fuel using gasoline witha
lo we roct ane number .
Fu rther information onfuel canbefound:
R ataga sst atio n
R ataqu alif ied spec ialistwo rkshop
R USAonl y:at http :/ /www .mbusa. com
Inf orma tion onaddit ives ingasoline
Obser vetheno teson oper ating fluids
(/ page39 9). *
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 Model
Total cap acity
S 56 04M ATIC 21.1ga l(80. 0liter s) Model
ofwhic hre ser ve
fuel
S 560 4MATIC 2.1 ga l(8 .0 lite rs) Engine
oil No
teson engine oil
Obser vetheno teson oper ating fluids
(/ page39 9). Te
ch nica lda ta 40
1

*
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. Quality
andcapacity ofengine oil Model
MB-Freigabe orMB-
Appr oval
S 560 4MATIC 229.52
229.6 1* *
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 . Model
Capacity
S 560 4MATIC 9.5US qt(9.0liter s) No
teson brak efluid Obser
vetheno teson oper ating fluids
(/ page39 9). &
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. Ha
ve thebr ak efluid regular lyreplaced ata
qu alif ied spec ialistwo rkshop.
Onl yuse abr ak efluid appr ovedby Mer cedes-
Benz accor dingtoMB-F reigabe orMB- Appr oval
33 1.0. 402
Tech nica lda ta

Coolant
No
teson coolant
Obser vetheno teson oper ating fluids
(/ page39 9). &
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 sfo r
Oper ating Fluids 310.1:
- Athttps: //bevo.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))
Co olant capacity Mode
lC apacity
S 560 4MATIC 15.0 US qt
(1 4.2 lite rs) No
teson windshield washer fluid Obser
vetheno teson oper ating fluids
(/ page39 9). Te
ch nica lda ta 403

&
WARNIN G‑Ri sk offire and injuryfrom
wind shieldwa sher concen trat e
Wi ndsh ield wa sher concen trat eis highl y
fl ammab le.Itcoul dign ite if it com esinto
con tact with hotengine component partsor
th eex haus tsy stem. #
Mak esur eth at no wind shieldwa sher
concen trat espills outnext to thefiller
open ing. *
NO
TEBlocked spr aynozzl escau sed by
mixing windshieldwa sher fluids #
Donotmix MBSum merFitand MBWin‐
te rFit withot her windshield washer flu‐
ids. Do
notuse distilled orde- ionizedwa teras thefill
le ve lsen sor maybe trigg ered erro neou sly.
Re comme ndedwindsh ield wa sher fluid:
R Abo vefreezing point:e.g. MBSummerFi t
R Belo wfreezing point:e.g. MBWinterFi t Fo
rth ecor rect mixi ngratio ,re ferto theinf orma‐
tion ontheantif reeze container .
Mix thewa sher fluid withth ewindshield washer
fl uid allyear round . Re
frig er ant No
teson refrig er ant
Obser vetheno teson oper ating fluids
(/ page39 9).
* NO
TEDama gedue toinc orrect refrig er‐
ant If
anon-appr ovedre frig er ant isuse d,thecli‐
mat econ trol system maybe damag ed. #
USA/China: UseonlyR‑1 34a refrig er‐
ant. #
Canada: UseonlyR‑1 234yf refrig er ant. *
NO
TEDama getotheclimat econ trol
sy stem due toinc orrect refrig er ant com‐
pr essor oil #
Onlyuse refrig er ant com pressor oilthat
has been approvedby Mer cedes-Ben z. #
Donotmix theappr ovedre frig er ant
com pressor oilwithadif fere nt refrig er‐
ant com pressor oil. Wo
rkon theclimat econ trol system maybe car‐
ri ed out onlyby aqu alif ied spec ialistwo rkshop.
All appli cable regulations, aswellas SAEstand‐
ar dJ63 9,mus tbe adher edto.
The information labelontheclimat econ trol sys‐
te m forth ere frig er ant type andthere frig er ant
com pressor oil(PAG oil) islocat edon theinside
of thehood. 40
4
Tech nica lda ta

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Á Key NotDetected (red dis‐
pla ymessag e) *T
heSmar tKey canno tbe detected and mayno long erbe intheve hicle.
The Smar tKey isno long erintheve hicle andyouswit choffth eengine:
R Youcan nolongerst ar tth eengine.
R Youcan notcen trally lockth eve hicle. #
Ensur eth at theSmar tKey isin theve hicle.
If th eSmar tKey detection functi onhasa mal functi ondueto ast ro ng radio signal source: #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions. #
PlacetheSmar tKey inthemar kedspace forst ar tin gth eengine withth eSmar tKey (/ pag e13 0).
Pl ac ethe Key inthe
Ma rked SpaceSee Opera -
tor' sMa nua l *S
mar tKey detection ismal functi oning. #
Chang eth elocation oftheSmar tKey intheve hicle. #
Place theSmar tKey inthemar kedspace forst ar tin gth eengine withth eSmar tKey (/ pag e13 0).
Á
Don't ForgetYour Key *A
warning tone willal so sou nd. Thismes sage reminds youto take your Sm artK ey wit hyo uwhen youlea vethe
ve hicle. 41
2
Display messa gesand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
0084 *T
hetrunk lidisopen. &
DANG ER Risk ofexhaus tga spoisoning
Combus tionengines emitpoisonous exhaus tga ses suchas carbon monoxide.Exhaus tga ses can enterthe
ve hicle interior ifth etrunk lidisopen when theengine isrunning ,esp ecially ifth eve hicle isin mo tion. #
Alw aysswitc hof fth eengine beforeopening thetrunk lid. #
Neverdr ive wit hth etrunk lidopen. #
Close thetrunk lid.
006F
Fron tLeft Seat Backrest
Not Lock ed(exa mp le) *T
heseat backres tof thecor responding front seat isno teng aged. #
Foldtheseat backres tbac kuntil iteng ages.
00B2 Check Washer Fluid *T
hewasher fluid leve lin thewa sher fluid reser voirhas dropped belowtheminimum. #
Addwa sher fluid (/ page33 6). 41
8
Display messa gesand warning/ indic ator lam ps

Engine
Displa
ymes sages
Possible causes/conseq uencesand0050 0050
Solutions
To switch engine off,press
and hold Start/S topbut-
ton foratleast 3secs. or
press 3times. *Y
ouhave pressed thest ar t/ stop butt onwhile theve hicle isin mo tion. #
Information aboutswitchingoffth eengine whiledriving (/page12 9).
00BD
Che ckCoo lant Level See
Opera tor'sManu al *T
hecoolant leve lis toolow.
* NO
TEEngi nedama gedue toinsuf ficie ntcool ant #
Avoid long journeys wit hins ufficie ntcool ant. #
Addcoolant (/page335 ). #
Have theengine cooling system checkedat aqu alif ied spec ialistwo rkshop.
ÿ
Coola ntToo HotStop Vehi-
cle Turn Engine Off *T
hecoolant istooho t. #
Pull overand stop theve hicle safely and switc hof fth eengine, paying attent ion toroad and traffic condi tions. &
WARNIN GDang erofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edordur ing afire intheengine compartmen t,yo uco uld
co me intoco ntact withho tga ses orother escaping operating fluids. #
Beforeopen ingthehood, allowtheengine tocool down. Disp
lay mess ages and warning/ indic ator lam ps 41
9

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Intheeve ntofafire intheengine compartmen t,ke ep thehood closed andcallthefire ser vice. #
Waitunt ilth eengine hascooled down. #
Mak esur eth at theair supply tothera diat orisno tobs truct ed. #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at
th ecoolant temp eratur edispla yre mains belowthere dmar king.
ÿ *T
hefanmo toris faulty . #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at
th ecoolant temp eratur edispla yre mains belowthere dmar king.
00B6
Fuel Level Low *T
hefuel supply hasdropped intoth ere ser verang e. #
Refuel .
00B6
Ga sCa pLoose *T
hefuel filler cap isno tclos edcor rectly orthefuel system isleaking. #
Close thefuel filler cap. #
Ifth efuel filler cap wasalr eady proper lyclosed :con sult aqu alif ied spec ialistwo rkshop. 420
Displa ymessag esand warning/ indic ator lam ps

Tr
ansmis sion Di
spla ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
Only Shift to'P' when Vehi-
cle isStationary *
Pa rk position 005Dcan beeng aged onlywhen theve hicle isstatio nary. #
Tostop, depr essthebr ak epedal. #
Shif tth etra nsmiss iontopar kposition 005Dwhile theve hicle isstatio nary.
App lyBra ketoShi ftfrom
'P' *
Yo uha ve attem pte dto shif tth etra nsmiss ionout ofpar kposition 005Dand intoano ther tra nsmiss ionposition . #
Depr essthebr ak epedal. #
Select transmiss ionposition 005B,005Eorneutr al005C.
To Deselec tP or N,
Depress Brakeand Start
En gine *
Yo uha ve attem pte dto shif tth etra nsmiss ionout ofpar kposition 005Dorneutral 005Cand intoano ther tra nsmiss ion
position . #
Depr essthebr ak epedal. #
Chang eth etra nsmiss ionposition . #
Startth eengine.
Apply Braketo Shift to'R' *
Youha ve attem pte dto select transmission position005E. #
Depr essthebr ak epedal. #
Select transmiss ionposition 005E.
Driver 'sDoor Open &
Transm issionNotinPRisk
of Vehicle RollingAway *
The driver's door isno tfully closed andtransmiss ionposition 005B,005Eorneutr al005C isselect ed. #
Select parkposition 005Dwhen switchingoffth eve hicle. Displa
ymessag esand warning/ indic ator lam ps 42
1