engine MERCEDES-BENZ S-CLASS COUPE 2021 Workshop Manual

Obser
vetheadditional follo wing pointsdur ing
st ar tin gassis tance:
R Startin gassis tance mayonly beprov ided
using vehicles, batteries orother jumpstar t
de vic es wit hano min alvoltag eof 12 V.
R The vehicles mustno tto uc h.
R Vehicl eswith aga soline engine: Jump-
st ar tth eve hicle onlywhen theengine and
ex haus tsy stem arecold. St
arting assistance andchargin gth e12 V
batt ery Re
quirement s:
R The vehicle issecur edwithth eelectr icpar k‐
ing brak e.
R The transmiss ionisin position 005D.
R The ignition andallelectr icalconsumer sar e
switc hedoff.
R The hood isopen. #
Slide cover3 ofposi tiveclam p4 onthe
jum p-starting con nection point inthedir ec‐
tion ofthear row . #
Con nect posi tiveclam p4 onyour vehicle to
th epositiv epole ofthedonor batteryusing
th ejum per cable/c harging cable. Always
begin withpositiv eclam p4 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 5 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 owdefr osteror lighting.
When thest ar tin gassis tance/c harging proce ss
is com plet e: #
First,re mo vethejum per cable/c harging
cable from ground point 5and negative
pole ofthedonor battery, then from positiv e
clam p4 and positiv epole ofthedonor bat‐ Br
eakdo wnassis tance 35
5

Fo
rto wing, useato w rope ortow bar withbo th
axle son thegr ound. Donotuse tow bar systems
(/ page203).
* NO
TEDama getotheve hicle duetotow‐
ing away inc orrectly #
Obs erve theins truction sand noteson
to wing away. To
tow wit hara ised axle: towing should be
per form ed byato wing company.
Pe rm itted towing methods Ve
hicl eswith automatic transmiss ion
Bo th axle son
th egr ound Ye
s,maximum 31mile s
(50 km) at31 mp h(5 0km/h)
Fr ont axle
ra ised No
Re ar axle
ra ised Ye
s,ifth esteer ing wheel is
fi xe din thecent erposition
wit hast eer ing wheel lock 4MA
TICvehicl es
Bo th axle son
th egr ound Ye
s,maximum 31mile s
(50 km) at31 mp h(5 0km/h)
Fr ont axle
ra ised No
Re ar axle
ra ised No To
wing theve hicl ewith both axle son the
gr ound #
Obser vetheno teson theper mitt edtowing
me thods (/page356). #
Mak esur eth at thebatt eryis con nect edand
ch arge d.
When thebatt eryis disc harged, thefo llo wing
act ions cannotbe per form ed:
R theengine cannotbe star ted
R theelectr icpar king brak ecann otbe released
or applied R
theaut omatic transmiss ioncann otbe shif ted
to position 005Cor005D
% Ifth eaut omatic transmiss ioncann otbe shif‐
te dto position 005C,orthemultifunc tiondis‐
pla yin theins trument clusterdoes notsho w
an ything, have theve hicle transpor tedaw ay
( / pag e359). Atowing vehicle withlifting
eq uipment isrequ ired forve hicle transpor ta‐
tio n.
* NO
TEDama gedue totowing away at
exc essiv elyhigh speeds orove rlong dis‐
ta nces The
drivet ra in could bedamag edwhen tow‐
ing atexc essiv elyhigh speeds orover long
dis tances. #
Atowing speed of30 mph(50 km/h)
mus tno tbe exc eeded. #
Atowing distan ceof30 miles(50 km)
mus tno tbe exc eeded. Br
eakdo wnassis tance 35
7

%
Dep endingonthemodel, button1 isloca‐
te dbe tween thesteer ing wheel andthedr iv‐
er's door . #
Toactiv atetranspo rtleve l:pr ess butt on
1.
Indic ator lam p2 lights up.
The vehicle issetto thehigh leve l. #
Press butt on1 again and hold itforat lea st
fi ve seconds.
The vehicle israised from thera ised leve lto
th etranspor tle ve l.
The transpor tle ve lis reac hed when indicat or
lam p2 flashes andtheMax. Speed 22mph
displa ymessag eappear sin themultifunc tion
displa y.
The vehicle islowe redag ain inthefo llo wing sit‐
uation s:
R When drivin gfa ster than 22 mph(35 km/h).
R Aftersele cting adr ive pr ogr am using the
DY NA MIC SELE CTswitc h.
The vehicle isthen adjus tedto theheight of
th elas tactiv edr ive pr ogr am. #
Secur eth eve hicle onallfour wheel saf te r
loading . #
Todeac tivatetranspo rtleve l:star tth e
engine whentheve hicle isat ast ands till.
If transpo rtleve lis act ivat ed, indic ator lam p
2 flashes . #
Press and hold button1 forat lea stfive
seconds.
The vehicle isadjus tedto theheight ofthe
las tact ive dr ive pr og ram. Indicat orlamp 2
goes out. #
Drive th eve hicle offth etranspor ter.
4MA TICvehicl es #
Mak esur eth at thefront and rear axle scom e
to rest on thesame transpor tatio nve hicle. 360
Breakdo wnassis tance

*
NO
TEDama getothedr ivet ra in due to
inc orrect pos itioning #
Donotpos ition theve hicle abovethe
connecti onpointofthetranspor tve hi‐
cle. To
wing eyesto rage location To
wing eye1 islocat edwithth eve hicle tool kit
under thetrunk floor . Ins
talling theto wing eye #
Press themar kon cover1 inwa rdsand
re mo ve. #
Screw intheto wing eyecloc kwiseasfaras it
wil lgo and tight en.
% 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) *
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. Br
eakdo wnassis tance 36
1

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. *
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.
* 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 inthefo llo wing
fuse boxes:
R Fuse boxin theengine compartmen ton the
dr iver's side (/page362 )
R Fuse boxon thedr iver's side ofthecoc kpit
(/ page36 4)
R Fuse boxin thefront passeng erfoot we ll
(/ page36 4)
R Fuse boxin thetrunk ontheright-h andside
of theve hicle, when viewe din thedir ect ion
of trav el (/ page36 4) Opening
andclosing thefus ebo xin the
engine compartmen t Re
quirement s:
R Obser vetheno teson electr icalfuses
(/ page362).
R Have thefo llo wing tools readil yav ailable:
- Adr yclo th
- Ascr ewdriver 362
Breakdo wnassis tance

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
tr apped bythewiper linkage. #
Alw aysswitc hof fth ewindshield wipers
and ignition beforeopening theengine
hood. #
Release retainin gclips 1.
Pull cover2 up. #
Remo veanyex istin gmois turefrom thefuse
bo xusing adr yclo th. #
Loosen screws4, and remo vefuse boxlid
3 from theto p.
Closing #
Chec kwhe ther theseal isposition edcor‐
re ctly inlid 3. Br
ea kdo wnassista nce 36
3

1
Ratche t
2 Alignme ntbolt
3 Jack ing suppor t
4 Jack
5 Lugwr enc h
6 Folding choc k Pr
epar ingtheve 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(/ page17 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
(/ page388). #
Raise theve hicle (/page389). Re
mo ving and inst alli ng hub caps Re
quirement s:
R The vehicle isprepar edfora whee lch ang e
(/ page38 8).
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 . 388
Wheels andtires

Alum
inum hubcap #
Toremo ve:po sitio nsoc ket2 from thetir e-
ch ang eto ol kit onhub cap1. #
Position wheel wrenc h3 onsoc ket2. #
Usingwheelwr enc h3, turnhu bcap 1
cou nter-clo ckwise andremo veit. #
Toins tall: follo wtheins truction sabo vein
re ve rseor der .
% 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(/ page38 8).
R The hub caps have been remo ved
( / pag e388).
Im por tant noteson using thejac k:
R Use onlya ve hicle-specif icjac kth at has
been approved byMer 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 thetrunk
lid. Wheels
andtires 389

The
follo wing canbeused intheve hicle without
re strictions :
R RFtransm itterswi th amax imum trans mis‐
sion output ofup to100mW
R RFtransmi tter swit htransmi tter freq uenci es
in the380 -41 0MHz waveband andamaxi‐
mum transmission outputofup 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 wav eband
R 2G/3G/ 4G Ra
dio equipme ntappr ovals forthe vehicl e
co mp onent s
Manuf acturer informat ionabout radio-based
ve hicle component scan befound usingth eke y
wo rd"Radio operatin gper mits",intheDigit al Oper
ator's Manual intheve hicle, ontheInt erne t
and intheapp. 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 Maximum permissible gross vehicle weight
2 Maxim umpermissib lefront axle load
3 Maxim umpermissib lerear axle load
4 Paint code
5 VIN (vehicle identificat ion numb er) Te
ch nica lda ta 39
7

Ve
hicle identif ication plate(Canada only)
1 Maximum permissible gross vehicle weight
2 Maxim umpermissib lefront axle load
3 Maxim umpermissib lerear 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 ofthefront seat 1
VIN (vehic leiden tificat ion num ber) Ad
diti onalplat es 1
Platewit hinf ormat ionabout emissionstest‐
ing, including confirm atio nof emis sions
guideli nesattheU. S. feder alleve las wellas
fo rCa lifor nia
2 VIN (vehicl eidentif icationnumber)
3 Engine number (sta mp edintoth ecr ankc ase) 398
Tech nica lda ta