ECU MERCEDES-BENZ S-CLASS 2020 Repair Manual

Ac
tiv atin g/deac tivatin gvolum eadjus tm ent
in theB urme ster ®
hig h-end 3Dsurround
soun dsystem
Multi media system:
4 Media 5
à Sound
5 Autom aticVolume Adjustmen t
Au tomatic volume adjustment com pens ates for
dif fering volumes whenchang ingbetween audio
sour ces. #
Activate0073 ordeacti vate 0053 thef unc tion .
Ad jus tingthe bal anc e/fader inthe
Bur mes ter®
high-e nd3D surround soun d
sy stem
Multi media system:
4 Media 5
à Sound
5 Balance andFader #
Adjus tthe balance andfader . #
Toexitth em enu :pr ess the0038 button. Ad
jus tingthe seat-b asedsound optimi zation
in the Burmes ter®
high-e nd3D surround
soun dsystem
Multi media system:
4 Media 5
à Sound 5
VIP Seat
This setting optimiz esthes ound playbac kfor the
select edseat position. #
Activatet he function 0073. #
Select aseat position .
Selecting thes ound profile inthe
Bu rm ester®
high-e nd3D surround soun d
sy stem
Multi media system:
4 Media 5
à Sound 5
Sound Profiles
The follo wing profiles area vailable:
R Pure
R EasyListeni ng
R Live
R Surroun d
R 3D-Soun d #
Select asoun dprofile. Re
ar Seat Entertai nment System Oper
ating safety &
WARNIN GRisk ofinju ryfrom laserradi‐
ation from theB lu-r aydrive
The Blu-r aydrivei sac lass1laser product. If
yo uo pen theh ousing oftheB lu-r aydrive,
th er ei sar iskofexposur etoinvisible laser
ra diation.
Laser radiation candamag eyour retina . #
Donoto pent he housing. #
Alw aysh ave maint enance workand
re pair scarried out byaq ualif iedspe‐
cialis tworks hop. &
WARNIN GRisk ofinju ryfrom unsecu red
it ems inthev ehicle
If object ssucha sheadphones/headse tsor
ex tern al audio/ videosour ces aren ot
sec ured inthev ehicle interior ,the yc an be
fl ung aroun dand hit vehicle occupants. Multimedia
system 389

Na
vig ation Switc
hingonnavig ation fort he Rear Seat
Ent ertai nment System
Re ar Seat Entertainm entSystem:
4 Navigation #
Alternativ ely:press the00CB buttononthe
re mo tecontr ol.
The map appea rsand showsthec urrent
ve hicle position.
If ar out eisa ctive, thef ollo wing information
is displa yedt ot he lefto fthe map:
R Ifth er ei sat raffic dela yonthe cur rent
ro ute, thed uration ofthed elayw illbe
displa yed.
The displa yisn otavailable inall coun ‐
tr ies.
R Forthe des tination Í:theremaini ng
dis tance and arriva ltim e
R Fora ninter media tedes tination Î:t he
re maini ngdistance and arriva ltim e
The routec an include uptofour inter‐
med iated estin atio ns. R
The comp ass needle0048
De pen dingo nthe media sourcecur rently set
th ef ollo wing information isdispla yedt ot he
ri ght ofthem ap:
R Statio nnameo rset freq uenc y
R Trac k, artis t,album
R Album cover
R Trac kn um ber and num beroftrac ks in
th et rack list
Displa yingdestinat ioninformat ion
Re quirement s:
R Adestin ation isent ered. The routec an also
inc lude uptofour intermed iated estin atio ns.
Re ar Seat Entertainm entSystem:
4 Navigation #
Select Info.
Na mes andaddresses ared ispla yedf or the
des tination Í andintermediat edestin a‐
tion sÎ. #
Toretur ntothe map: select the0038 sym‐
bol. Online
andInterne tfunctions Ov
ervie wo fInt erne tfunctions inther ear
pa sseng ercom partment
The follo wing functionsand displa ysarea vaila‐
ble inther ear passeng ercom partment depend‐
ing onthec ount ryand vehicle equipment :
R Connect ivitystatus displa y(/ pag e399)
R Callin gupthe webb row ser (/ page 364)
R Calling upMer cedes- BenzApps
(/ page363)
R Re-es tab lishin ganInter ne tc onnecti on
Di spla yingthe Inte rn et connect ivitystat us
fo rt he rear passe nger comp artment
Re quirement s:
R AnInterne tc onnec tion issetu pint he multi‐
media system atthef ront via thec omm uni‐
cation module, depending onthev ehicle
eq uipment (/page362).
Re ar Seat Entertainm entSystem:
4 System #
Select Internet Status . Multimedia
system 399

If
ap ressur eloss warning mess agea ppear sin
th em ultifunc tiondispla y,proceed asfollo ws :
R Chec kthe tiref or damag e.
R Ifdr iving on,obser vethef ollo wing notes.
Dr iving distance possible inemer gency
mode afte rt he pres sur elossw arnin g: Loa
dcondit ion Driving distance pos‐
sible inemer gency
mode
Pa rtiall yladen 50miles (80km)
Fu llyl aden 19mile s(30 km) The
driving distance possi blei ne me rgency
mod emayvary dependin gonthe driving style.
Obser vethem aximum permissible speedof
50 mph(80 km/h).
If at ireh asgone flat and cannotb ereplaced
wit ha nM OEx tende dtire, youc an use astand‐
ar dt irea sat empor arym easur e. TIREFIT
kitstorage location The
TIREF ITkit islocat edunder thet runk floor .
Mer cedes vehicl es:obse rvet he notesi nt he
Supplement. Other wise, youm aynotrecog nize
dang ers.
Plug- inhybrid: obser vethen otes intheS upple‐
ment .Other wise, youm aynotrecog nizedan‐
ge rs. 1
Tire seala ntbottle
2 Tire inflation compressor Using
theT IREFIT kit Re
quirement s:
R Tire seala ntbottle
R Enc losed TIREFIT sticke r
R Tire inflation compressor
R Disp osable glov es
Yo uc an use TIRE FITt ires ealan ttos eal perfora ‐
tio nd amageo fupt o0 .16i n( 4m m),particular ly
th ose inthet irec ontact surface. Youc an use
TIRE FITi no utside temp eratur esdown to-4 °F
(-20 °C). &
WARNIN GRisk ofacci dent whenusing
tir es ealant
In thef ollo wing situations inpar ticular ,the
tir es ealan tisu nablet op rovide sufficie nt
br ea kdo wnassista nce, asitis una blet os eal
th et irep roper ly:
R Ther earecuts orpunct ures inthet ire
lar gerthan those prev iousl ymention ed.
R The wheel rimi sdama ged. Br
eakdo wnassis tance 42
7

Obser
vethef ollo wing points during star tin g
assis tance and when chargin gthe batt ery:
R Onlyuseundamag edjum per cables/c harg‐
ing cables withas ufficie ntcross -secti onand
insu late dt erminal clamps.
R Non-insulat edpar tsof thet erminal clamps
mus tnotcom eintoc ontac twitho ther me tal
par tswhile thej um per cable/c harging cable
is con nect edtotheb attery/jum p-start con‐
nectio npoint.
R The jumper cable/c harging cable mustnot
com eintoc ontac twitha nypar tswhic hmay
mo vewhen thee ngine isrunning .
R Alw aysm akes uret hat neither youn orthe
batt eryi se lect rostatic allyc harg ed.
R Keep away from fire and open flames .
R Donotlean overthe batt ery.
Obser vethea dditional follo wing pointswhen
ch argin gthe batt ery:
R Onlyusebatt eryc har gers tested and
appr oved forM ercedes-Benz.
R Read theb atteryc har ger's oper ating instruc‐
tions beforec har ging theb attery. Obser
vethea dditional follo wing pointsduring
st ar tin ga ssis tance:
R Startin ga ssis tance maybep erform ed using
onl ybatteries withan ominal voltag eo f12V .
R The vehicles mustnottouc h.
R Vehicl eswith agasoli neengi ne:Jump-
st ar tt he vehicle onlyw hen thee ngine and
ex haus tsyst em arec old. St
arting assistance andchargin gthe 12V
batt ery Re
quirement s:
R The vehicle issecur edwiththe electr icpar k‐
ing brak e.
R The transmission isin position 005D.
R The ignition andallelectr icalconsumer sare
switc hedoff.
R The hood isopen. #
Slide cover3 ofposi tivec lam p4 onthe
jum p-starting con nection point inthed irec‐
tion ofthea rrow . #
Con nect posi tivec lam p4 onyour vehicle to
th ep ositiv epole ofthed onor batteryu sing
th ej um per cable/c harging cable. Always
begin withp ositiv eclam p4 onyour ow n
ve hicle firs t. Br
ea kdo wnassist anc e435

#
Donota ctivate theH OLD function. #
Deact ivat et he tow- aw ay alar m(/pag e94). #
Dea ctivateA ctiv eBrake Assi st
( / pag e209). #
Shif tthe aut omatic transmission toposition
005C. #
Release thee lectr icpar king brak e. &
WARNIN GRisk ofacci dent duet olimi‐
te ds afet y-re lat ed func tionsduring the
to wing proce ss
Saf ety-re lat ed func tionsarelimit edorno lon‐
ge ra vailable inthef ollo wing situations:
R thei gnition isswitc hedoff.
R theb rake system orpowe rsteer ing sys‐
te mi sm alfu nctioning.
R thee ner gysupply ortheo n-boar delectr i‐
cal system ismalfunct ioning.
When your vehicle isthen towe da way,signif ‐
icant lymor eeffor tm aybe requ ired tosteer
and brak et han isnor mall yrequir ed. #
Use atow bar. #
Mak esuret hat thes teer ing wheel can
mo vefreely ,befor et ow ing thev ehicle
aw ay. *
NO
TEDama gedue toexcess ivet racti ve
po we r If
yo up ullaway shar ply, thet ractiv epowe r
ma ybetoo high andthev ehicles couldbe
damag ed. #
Pull away slo wlya nd smoo thly. Lo
adi ng the vehicl efor tran spor t #
Obs erve then otes on towing away
( / pag e438). #
Connec tthe towb arto thet ow ing eyet o
load thev ehicle. #
Shif tthe aut omatic transmission toposition
005C.
% The automatic transm ission maybeloc ked
in posit ion005Dinthee vent ofdama getothe electr
ics.Toshif tto005C ,provide theo n-
boar delectr icalsystem withp owe r
( / pag e435). #
Load thev ehicle ontothe transpor ter. #
Shif tthe aut omatic transmission toposition
005D. #
Use thee lectr icpar king brak et os ecur ethe
ve hicle agains trolling away. #
Onlysecur ethe vehicle bythew heels.
Ve hicl eswith ADSP LUS(Ad aptiv eD amping
Sy stem PLUS) &
WARNIN GRisk ofan acci dent when
tr ansp orting vehicles withA dap tive
Dam ping System PLUS
The reduced damping forc es on thev ehicle
being transpor tedc an cause thev ehicle/
tr ailer combinatio ntos tart to swing.
As aresult, whentranspor tingvehicles with
th eA dap tiveD ampingS ystemP LUS,the
ve hicle/tr ailercombination maystart to skid.
Conseq uently,yo uc ouldlose contro lo fyour
ve hicle. Br
eakdo wnassis tance 43
9

#
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

The
tirep ressur etable showsther ecom mende d
tir ep ress ures fora lltir es app rove df or this vehi‐
cle. The recomme ndedtirep ress ures apply for
cold tires und ervarious oper ating condit ions,i.e.
loading and/orspeedofthev ehicle.
If one ormor etires izes precede atirep ressur e,
th et irep ressur einfor mation follo wing isonl y
va lid fort hose tires izes.
The load condit ions"partially laden" and"fully
laden" ared efined inthet able ford iffe re nt num ‐
be rs of passeng ersa nd amounts oflugg age. The
actual number ofseats maydiffe rf romt his. Some
tirep ressur etables onlyshowt he rim
diame teri ns tead ofthec om pletetires ize, e.g .
R1 8.T herimd iame teri sp arto fthe tires ize and
can befound onthet ires ide wall(/ page462).
Be suretoa lso obse rvet he follo wing further
re lat ed subje cts:
R Noteso ntirep ressur e(/pag e448)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page454) R
Max imum tirep ressur e(/pag e461) Chec
kingtirep ressu resm anu ally #
Read thet irep ressur efor thec urrent operat‐
ing cond itions from theT irea nd Loadi ng
In fo rm atio nplacar dorthe tirep ressur e
ta ble. Obser vethen otes on tirep ressur e. #
Remo vethev alvec ap ofthet iret ob e
ch ecked. #
Press thet irep ressur egaug esecurelyo nto
th ev alve. #
Read thet irep ressur e. #
Ifth et irep ressur eislowe rthan ther ecom ‐
men dedvalue, increase thet irep ressur eto
th er ecom mende dvalue. #
Ifth et irep ressur eish igher than ther ecom ‐
men dedvalue, release air.Tod oso,press
do wn them etal pin inthev alve,e.g. using
th et ipof ap en fore xamp le.Then checkt he
tir ep ress urea gain usin gthe tirep ressur e
ga ug e. #
Screwt he valvec ap ont othe valve. 450
Wheels andtires

th
ese arei nstalled onthev ehicle, butdoes not
include passeng erso rlugg age.
Maximum tirel oad: them aximum tirel oad is
th em aximum permissible weight inkilog rams or
lbs forw hich atirei sa ppr ove d.
Maxim umpermissible tirep ressur e:maxi‐
mum permissible tirep ressur efor one tire.
Maxim umload onone tire: maxim umloado n
one tire. This iscalcu lated bydividing them axi‐
mum axleload ofone axle bytwo.
PSI (pounds persquar einc h):st andar dunit of
meas uremen tfor tirep ressu re.
Aspe ctratio :ra tio betwee nt ire height and tire
wi dthi np ercent.
Tir ep ress ure: press urei nsi de thet irea ppl ying
an outw ardf orce toeve rysquar einc ho fthe tire.
The tirep ressur eiss pecif iedinpounds per
sq uar einc h( psi), inkilopascals (kPa)or inbar .
The tirep ressur eshould onlybec orrected whe n
th et ires arec old.
Cold tirep ressur e:thet ires arec old when the
ve hicle hasbeen parkedf or atleas t3h ours wit
hout direct sunli ghtonthet ires orthev ehicle
has been driven forl ess than 1m ile(1.6 km ).
Ti re contact surface: thep arto fthe tiret hat
comes intoc ontact with ther oad.
Ti re bead: thep urpose ofthet ireb ead isto
ensur ethat thet ires its secur elyo nthe wheel
ri m. Ther eareseveralw irec ores inthet ireb ead
to preve ntthet iref romc hanging lengthonthe
whee lrim.
Sid ew all: thep arto fthe tireb etwe en thet read
and thet ireb ead.
We ight ofoptiona lequ ipm ent:th ec ombin ed
we ight oftheo ption aleq uipment weighin gmore
th an ther eplaced standar dparts and morethan
5l bs (2.3k g).T his optional equipment, suchas
high-per form anc ebrake s,leve lc on trol system, a
ro of lugg ager acko rhigh-per form anc ebatteries,
is no tincluded inthec urb weight andthew eight
of thea ccessor ies.
TIN (TireI dentif ication Numbe r):au niqu e
ident ificat ion numb erwhic hcan be used bya
tir em anufactu rert oi dent ifytires, fore xamp le,
in ap roduc trecall, andthus iden tifyt he pur‐
ch aser s.The TINismade upofthem anuf actur‐ er's
identit ycode, tires ize, tiret ype code and
th em anuf actur ingdate.
Load-bear inginde x:thel oad-bear inginde xisa
code that con tains them aximum load-bear ing
capacity ofat ire.
Tr actio n:traction istheg ripr esulting from fric‐
tion between thet ires and ther oad surface.
We arindi cator:nar row bars(tread wearbar s)
th at ared istribut edove rthe tirec ontact surface.
If th et iret read isleve lw itht he bar s,thew ear
limit of1/1 6in( 1.6m m)has been reac hed.
Dis tribut ionofvehicl eoccupants: distribu tion
of vehicle occupants over designat edseat posi‐
tion sinav ehicle.
Maximum permissible payload weight :nom i‐
nal load andluggagel oad plus 150lb( 68 kg)
multip liedb ythe number ofseats inthev ehicle. 466
Wheels andtires

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
Ap erson inthef ront passeng erseat could then, fore xamp le,com eintoc ontact with thev ehicle's interior ,
especially ifth ep erson issitt ing tooc lose tothec ockpit. #
Mak esure, bo th bef orea nd dur ing thej our ney,that thes tatus ofthef ront passeng erairbag iscor rect. #
Stop thev ehicle immediat elyinaccor dance withthe traf ficc ondi tions . #
Checkt he status ofthea utomatic front passeng erairbag actuation (/page45). #
Ifneces sary,consu ltaq ualif iedspec ialistworks hop immediat ely.
Front Passeng erAirb ag
Enabl edSee Operator 's
Manu al *T
hefront passeng erairbag isenabled whilethev ehicle isin mo tion:
R evenw henac hild, aperson ofsmall statur eorano bject weighin gless than thes ystemw eight thre shold is
locat edon thef ront passeng erseat
R even when thef ront passeng erseat isno to ccupied
The system maydetect objects orforc es that area ddin gtot he weight applied tothes eat. &
WARNIN GRisk ofinju ryor fata linj ur yi fac hildrestra int system isused while thef ront passeng erfront
airbag isenabled
If yo us ecureac hildinac hild restra int system onthef ront passeng erseat andthef ront passeng erairbag is
enabled, thef ront passeng erairbag candeplo yint he eve ntofan acci dent.
The child could bestru ck bythea irbag. #
Ensur e,bo th bef orea nd dur ing thej our ney,that thes tatus ofthef ront passeng erairbag iscor rect. Disp
laym essages and warning/ indic ator lam ps 495