2020 MERCEDES-BENZ S-CLASS Owner's Manual

ASS
YSTP LUSs ervice inte rv al dis pla y Fu
nction oftheA SSYSTP LUSs ervice inte rv al
displa y The
ASSYSTP LUSs ervice interva ld ispla yonthe
Ins trument Displayprovide sinfor matio nonthe
re maini ngtime ordis tance before then ext
ser vice duedate.
Yo uc an hide this ser vice displa yusing theb ack
butt ononthel eft-hand sideofthes teer ing
wheel.
Depen dingonhowt he vehicle isused, the
ASS YSTP LUSs ervice interva ld ispla ymay
shor tent he ser vice interva l,e.g. inthef ollo wing
cases:
R Mainl yshor t-dis tance drivi ng
R Whe nthe engine isoftenl eftidling forl ong
per iods
R Inthee vent offreq uent col ds tart phase s
Mer cedes-Ben zrecom mends avoiding such
oper ating condit ions.
Yo uc an obt ain informat ionconcernin gthe ser v‐
icing ofyour vehicle from aqualif iedspec ialist wo
rkshop, e.g.anaut hor ized Mercedes-Benz
Cent er. Displa
yingthes ervice dued ate On
-boa rd com puter:
4 Service 5
ASS YST PLUS
The next ser vice duedateisd ispla yed. #
Toexitth ed isplay: press theb ackb utton
on thel eft-hand sideofthes teer ing wheel.
Be suretoa lso paya ttent ion tothef ollo wing
re lat ed topic:
R Oper ating theo n-boar dcom put er
(/ page264). Inf
ormat iononregular maintenance work *
NO
TEPrema turew ear thro ugh failur eto
obser veser vice duedates Ser
vice workwhic hisn otcar ried out atthe
ri ght time orincom pletely can lead to
inc reased wearand damag etot he vehicle. #
Alw ayso bser vethep rescr ibed service
int erva ls. #
Alw aysh ave thep rescr ibed service
wo rkcar ried out ataq ualif iedspec ialist
wo rkshop. Special
service requ irement s The
prescr ibed service interva lisb ased onnor ‐
mal opera tionofthev ehicle. Maintenance work
will needtob eperform ed mor eoften ifth ev ehi‐
cle isoper ated under arduous conditions or
incr eased loads.
The ASSYSTP LUSs ervice interva ld ispla yiso nly
an aid. Thedriver ofthev ehicle bearsresponsi‐
bility asrega rdst ow hether maint enanc ework
needs tobe per form ed mor eoften than spec i‐
fi ed based onthea ctual operating conditions
and/or loads.
Ex am ples ofarduous operating conditions :
R regular citydriving withfrequ ent intermedi‐
at es tops
R mainly short-distance drivi ng Ma
intena nce and care40
7

R
freq uent operation inmount ainousterrain or
on poor road sur faces
R whe nthe engine isoftenl eftidling forl ong
per iods
R oper ation inpar ticula rlyd usty cond ition s
and /orifa ir-r ec ircula tion mod eisf requ ently
used
In these orsimilar operating conditions ,havet he
int erior airfilt er ,e ngin eairclean er,e ngin eoil
and oilfilt er etc. chang edmor efrequ ent ly.T he
tir es mus tbec hec kedm oref requ entl yifthe
ve hicle isoper ated under increased loads. Fur‐
th er information canbeobt ained ataq ualif ied
spec ialistworks hop. Batt
eryd isconne ctionperiods The
ASSYSTP LUSs ervice inte rv al dis pla y
can onlycalculat ethe ser viced ue date when
th eb attery isconnect ed. #
Notedown thes ervice duedatedispla yedo n
th ei nstrument displaybefor ed iscon necting
th eb attery( /pag e407). Engine
compartment Ac
tiv eh ood( pedes trian protection) Oper
ation ofthea ctiveh ood (ped estrian pro‐
te ction )
In cer tain acc ident situations,the risk ofinjur y
to pedes trians canbereduced bythea ctuation
of thea ctiv ehood. Therear area oftheh ood is
ra ised byappr oximat ely8 0m m.
Fo rthe drivet ot he workshop, rese tthe trig‐
ge reda ctiv ehood yourself .After thea ctiv ehood
has been trigg ered, pedes trian protect ion may
be limit ed.
Aq ualif iedspec ialistworks hop mustre-i nstate
th ef ull func tionality ofthea ctiv ehood.
The activ ehood isno ta vailable inall coun tries.
Re setting thea ctiveh ood &
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. #
With your han dflat, push down activeh ood
1 inthea reaa round theh ingeson both
sides (arrow s).
The hood mustengagei np osition. #
Ifth ea ctiv ehood canberaised slight lyat
th er ear inthea reao fthe hing es,repeat the
st ep until iteng ages cor rectl y. 408
Maintenanc eand car e

Opening/closing
theh ood &
WARNIN GRisk ofacci dent ifth ee ngine
hood isunlatc hedwhile driving
An unloc kede ngin ehood mayopen upwhen
th ev ehicle isin mo tion andblockyour view. #
Neveru nla tcht he engine hoodwhile
dr iving. #
Beforee very trip, ensur ethat the
engine hoodislatc hed. &
WARNIN GRisk ofacci dent andinjury
when openingand closingthee ngine
hood
When opening orclosing thee ngine hood, it
ma ysuddenl ydropi ntot he end position.
Ther eisar iskofinju ryfora nyo neinthe
engine hood's rang eo fm ove ment. #
Onlyopen orclose thee ngine hood
when ther ea reno per sons inthe
engine hood's rang eo fm ove ment. &
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 GRisk ofinju rydue tomo ving
par ts
Cer tain com pone ntsi nt he engine compart‐
ment maycontinue tomo veorsuddenly
mo veagain evenafter thei gnition hasbeen
switc hedoff,e.g. thec ooler fan.
Ma kesur eofthe follo wing beforep erform ing
ta sk si nt he engine compartment : #
Switc hthe ignition off. #
Nevertouc hthe dang erzone surround ‐
ing movingc om ponent parts, e.g. the
ro tatio na reao fthe fan. #
Remo vejewe lrya nd watche s. #
Keep items ofclo thing and hair away
fr om moving parts. &
WARNIN GRisk ofinju ryfrom touc hin g
co mp onent partsunder voltag e
The ignit ionsystem and thef uel injec tion
sy stem workund erhigh voltag e. Ifyo ut ouc h
com ponent partswhic hareunder voltag e,
yo uc ouldrecei vean elec tric shoc k. #
Nevertouc hcom ponent partso fthe
ignition system orthef uel injec tionsys‐
te mw hen thei gnition isswitc hedon. &
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. Maint
enanc eand car e409

#
Allow thee ngine tocool down and only
to uc hc om ponent partsd escr ibed in
th ef ollo wing. &
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
tr appe dbythe wiper linkage. #
Alw ayss witc hoffthew indshield wipers
and ignition beforeo pening thee ngine
hood. Plug-in
hybrid: obser vethen otes intheS upple‐
ment .Other wise, youm ayfailto recogni zedan‐
ge rs. #
Toopen: pullleve r1 torelease theh ood. #
Push handle 1oftheh ood catchupwards
and liftt he hood byappr oximat ely1 5in
(40 cm). #
Toclose: lowe rthe hood andleti tf all from a
height ofappr oximat ely8 in(20 cm). #
Ifth eh ood canstill be lifte ds lightl y,open
th eh ood again and close itwit hal ittle more
fo rc eu ntil iteng ages cor rectl y. 41
0
Maint enance andcare

Engine
oil Chec
kingthee ngine oilleve lu sing theo il
dip stick &
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. Plug-in
hybrid: obser vethen otes intheS upple‐
ment .Other wise, youm aynotrecog nizedan‐
ge rs.
Re quirement s:
R The engin emusth ave anoildips tick.Ifno t,
th ee ngine oilleve lc an be checkedo nlyw ith
th eo n-boar dcom put er(/ page411).
Dependi ngon thee ngine, theo ildips tickm aybe
ins talled inthee ngine compartmen tind iffe re nt
lo cati ons. The
waitin gtimeb efor ec hec king theo ille ve l
when thee ngine isat nor mal oper ating temp era‐
tur eisf ivem inut es. #
Park thev ehicle onalevel sur face. #
Pulloil dips tic k1 outa nd wipe off. #
Slowly slide oildips tic k1 intot he guide
tube tothes top, and take itout again afte r
appr oximat elyt hree seconds.
R Oilleve lisc orrect:o ille ve lisb etwe en 2
and 3.
R Oilleve ltoo low: oil leve lisa t3or
belo w.
R Oilleve ltoo high: oilleve lisa bove 2 . #
Ifth eo ille ve list oo low, add 1.1U Sqt
(1 liter) ofengine oil. #
Ifth eo ille ve list oo high, have thee xcess
engi neoilremo veda ssoon aspossible ata
qu alif ied spec ialistworks hop.
Chec kingthee ngine oilleve lu sing theo n-
boar dcom puter
Re quirement s:
R The engin ehaswarmed up.
R The vehicle ispar kedo nal evel sur face.
R The engineisrunning atidle spe ed.
The engineoilleve lisd eter mined during driving.
De term inin gthe engine oilleve lc an take up to Maint
enance andcare 41
1

30
minut eswit han ormal driving stylea nd eve n
long erwit ha na ctived rivin gs tyle.
On -boa rdcom puter:
4 Service5
Engine OilLevel
Yo uw illsee oneo fthe follo wing mess ages on
th em ultifunc tiondispla y:
R Measuring Engine OilLevel.. .:measur ement
of theo ille ve lisn otyetp ossibl e. #
Repeat ther eques tafter am aximu mof
30 minut esdriving.
R Engine OilLevel OKand theb ardispla yfor
indicating theo ille ve lo nt he multifunction
displa yisg reen and isbe tween "min" and
"max": theo ille ve lisc orrect.
R Engine OilLeve lAdd 1.0 land theb ardispla y
fo ri ndica tingtheo ille ve lo nt he multifunc‐
tion displa yiso rang ea nd isbelo w"min": #
Add1 .1US qt(1l)of engine oil.
R Red uce Engine OilLevel andtheb ardispla y
fo ri ndica tingtheo ille ve lo nt he multifunc‐
tion displa yiso rang ea nd isabo ve"max ": #
Drain offa ny excess engineoilthat has been
added. Todo so, con sult aqualif iedspec ialist
wo rkshop.
R For Engine OilLevel Switch Ignition On: #
Switc honthe ignition tocheckt he engine oil
le ve l.
R Engine OilLeve lSyst em Inoperat ive:sensor
fa ulty ornotins erted. #
Consult aqualif iedspec ialistworks hop.
R Engine OilLevel System Currently Unavail.: #
Close theh ood.
Re filling engine oil &
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 offire and injuryf rom
eng ineoil
If eng ineoilcom esintoc ontact with hot
com ponent partsinthee ngine compart‐
ment ,itm ayignit e. #
Mak esuret hat noengine oilisspil led
ne xt to thef iller open ing. #
Allo wthe engine tocool offa nd thor‐
oughl yclean thee ngine oilfrom com po‐
nen tparts bef ores tartin gt he vehicle. *
NO
TEEngi nedama gecau sed byan
inc orrect oil filt er ,inc orrect oil oraddi‐
tiv es #
Donotu se engi neoilso roilfilt er s
whic hdonotcor respond tothes pecif i‐
cation sexpl icitly prescr ibed fort he
ser vice interva ls. #
Donota lter thee ngine oiloroil filt er in
or der toachie velong erchang einter va ls
th an presc ribed. #
Donotu se additiv es. 41
2
Maint enance andcare

#
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