warning light MERCEDES-BENZ S-CLASS 2020 Owner's Guide

Ac
tiv atin g/deac tivatin gActive Lan eKeeping
Assis t &
WARNIN GRisk ofacci dent despite
Ac tiveL aneK eeping Assistwarning
Al ane- correcting brak ea pplica tion canno t
al wa ys bring thev ehicle backintot he origi‐
nal lane. #
Alw ayss teer,b rake oraccelera teyour‐
self ,espe ciall yifA ctiv eLaneK eeping
Assis twarns youo rm akes alane -cor‐
re cting brak ea pplica tion. &
WARNIN GRisk ofacci dent despite inter‐
ve ntio nofActiv eLaneK eeping Assist
Ac tiveL aneK eeping Assistdoes notd etect
tr af ficc ondi tions orroad user s.In very rare
case s,thes ystem maym akea ninappr opri‐
at eb rake application, e.g.afte ri nt entional ly
dr iving overas olidl ane marking.
The brak ea pplica tion canbeinterru pte dat
an yt ime ifyo us teer slightl yint he opposit e
dir ection. #
Alw aysm akes uret hat ther ei ss uffi‐
cie ntdist anc etot he side foro ther traf‐
fi co robstacle s. &
WARNIN GRisk ofacci dent despite Lane
Ke eping Assist
Lane Keeping Assistcann otalw aysc lear ly
de tect lane mar kings .
In such case s,Lane Keeping Assistcan:
R givea nu nnec essar ywarning
R notg iveaw arning #
Alw aysp aypar ticular attention tothe
tr af fics ituation and keep within the
lane, espec iallyifA ctiv eLaneK eeping
Assis taler tsyou. Be
suretoo bser vethes ystem limit ations of
Ac tiveL aneK eeping Assist. #
Press butt on2.
If indicat orlam p1 lights up,ActiveL ane
Ke eping Assistisa ctiv ated, thel ane mark‐
ings ares hown aslight inthea ssis tance
gr ap hic. Whe nActiv eLaneK eeping Assistis
activ e,thel ane marking saresho wningreen
in thea ssis tance grap hic.
% Dep endingonthec ount ry,y ou mayhave to
pr ess and hold theb utton todeactiv ate. Dr
iving andparking 26
1

1
Setting currently select ed
2 Digital spe edome ter
3 Traf ficS ign Assi st
4 Navig ation displays Head-up
Display Fu
nction oftheH ead -up Displa y Mer
cedes‑ AMGvehicl es:Obser vethen otes in
th eS upplement .Other wise, youm aynotrecog ‐
niz ed angers.
The Head-upD isplayp rojects informati onfrom
th en avigation system, thed rive ra ssis tance sys‐
te ms and some warning mess ages abo vethe
coc kpit intot he driver's field ofvision.
Displa yelements 1
Navig ation instructions
2 Current speed 3
Detected instructi ons and traf fics igns
4 Setspeed inthed rive ra ssis tance system
(e.g. cruise control)
When your eceiv eacall,the0061 Incoming Call
messag eappear sonthe Head-up Display.
Sy stem limita tions
The visib ilityisinf luenc edbythef ollo wing condi‐
tions:
R Seat position
R The positioning ofthed ispla yimag e
R Light conditions
R Wetroads
R Object sonthe displa ycover
R Polar izat ion insung lasses
% Inextreme sunli ght, sectio nsofthed ispla y
ma yappear washed out.Youc an correct this
by switc hingtheH ead-up Displayoffand on
ag ain. 27
4
Instrument Displayand on-boar dcom put er

&
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

Fu
rther relat ed subje cts:
R Noteso ntirep ressur e(/pag e448)
R Tire pressur etable (/page449)
R Tire and Loadi ngInfo rm atio nplacar d
(/ page454) Ti
re pres sur em onitoring system Fu
nction ofthet irep ressur emonitoring sys‐
te m &
DANG ER Risk ofacc iden tdue toinc or‐
re ct tirep ress ure
Eac htire, incl uding thes par etire( ifpr esent ),
should becheckeda tleas tonceam onth
when coldandthen inflated tothep ressur e
re comme ndedbythev ehicle manufacturer
(see theT irea nd Loadi ngInfo rm atio nplac‐
ar do nthe driver's side B‑pillar orthet ire
pr essur etableon thei nside ofthef uel filler
fl ap ofyour vehicle). Ifyo ur vehicle hastires
of ad iffe re nt size than thes ize indicat edon
th eT irea nd Loadi ngInfo rm atio nplacar dor th
et irep ressur etable, youm ustfind out the
cor rect tirep ress ures fort hese tires.
As anadded safetyf eatur e,your vehicle has
been equipped withat irep ressur emonit or‐
ing system (TPMS) that illumin ates alow tire
pr essur eind icat orlam pwhen oneo rm oreo f
yo ur tires ares ign ifican tlyu nderinf lated.
Ac cor ding ly,i ft he lowt irep ressur eindicat or
lam plights up,yous hould stop and check
yo ur tires assoo nasposs ible, andinflate
th em tothec orrect press ure. Driving on a
sig nifica ntly underinf late dt irec auses thet ire
to ove rheat and canlead totiref ailur e.
Und erinf lation alsoincreases fuelconsum p‐
tion ,reduces thel ifee xpe ctan cy ofthet ire
and mayadversely affect theh andling and
br aking charact eristic so fthe vehicle. Please
no te that theT PMS isno tas ubstitutef or
pr oper tirem aint enanc e,and itis thed rive r's
re sponsibili tyto maint aincorrect tirep res‐
su re,e veni fu nder inflation hasnotreac hed
th el eve ltot rigg er illum inati on oftheT PMS
lo wt irep ressur eindicat orlam p. Yo
ur vehicle hasalso been equipped witha
TPMS malfunction indicatortoindic atew hen
th es ystemi snotoper ating proper ly.T he
TPMS malfunct ionindicat oriscombin edwith
th el ow tirep ressur eindicat orlam p.When
th es ystemd etects amalfuncti on,thei ndica‐
to rlamp willflash fora pproxima tely am inut e
and then remain continuously illumina ted.
This sequence willcontinue upon subseq uent
ve hicle star t-ups aslon gasthe malfunction
ex ists.
When them alfunct ionindicat orisillumina‐
te d, thes ystemm aynotb ea ble todetect or
sig nal lowt irep ress urea sintende d.TPM S
mal functi onsmayoccu rfor av ariety of rea‐
son s,inc ludin gthe installation ofinc om pati‐
ble replacemen toralter nat etires orwheels
on thev ehicle that prev ent theT PMS from
func tioningproper ly.
Alw aysc hec kthe TPMS malfunction warning
lam pafter replacing oneormor etires or
wheels onyour vehicle toensur ethat the
re placemen toralter nat etires and wheels Wheels
andtires 45
1

Occupant
safety Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
0075 SRS Malfunct ionServic e
Required *T
herestra int system ismalfunct ioning(/page34). &
WARNIN GRisk ofinju rydue tomalfu nctions inther estra int system
If th er estraint system ismalfunct ioning,restra int system com ponen tsma ybetrigg ered unint entionally orma y
no td eplo yasintended during anacciden t.This mayaffect theE mer gency Tensi oni ng Device sorairba gs, for
ex am ple. #
Have ther estra int system checkeda nd repair edimmediat elyataq ualif iedspec ialistworks hop. Re
cogni tionofar estra int system malfunct ion:
R The 0075 restra int system warning lam pdoes notlight upwhen thei gnition isswitc hedon.
R The 0075 restra int system warning lam plight supc ontin uousl yorrepeat edlyduring ajour ney. #
Con sult aqualif iedspec ialistworks hop immediat ely.
0075
Front LeftMalfuncti on
Servi ceRequire d(exa mp le) *T
hecor responding restra int system ismalfunct ioning(/page34). &
WARNIN GRisk ofinju rydue tomalfu nctions inther estra int system
If th er estraint system ismalfunct ioning,restra int system com ponen tsma ybetrigg ered unint entionally orma y
no td eplo yasintended during anacciden t.This mayaffect theE mer gency Tensi oni ng Device sorairba gs, for
ex am ple. #
Have ther estra int system checkeda nd repair edimmediat elyataq ualif iedspec ialistworks hop. Displa
ymessag esand warning/ indic ator lam ps 493

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
Re cogni tionofar estraint system malfunct ion:
R The 0075 restra int system warning lam pdoes notlight upwhen thei gnition isswitc hedon.
R The 0075 restra int system warning lam plight supc ontin uousl yorrepeat edlyduring ajour ney. #
Con sult aqualif iedspec ialistworks hop immediat ely.
0075
Left Side Curta inAirbag
Malfu nction Service
Req uired(exa mp le) *T
hecor responding windowcurtai na irba gism alfu nctio ning(/page 34). &
WARNIN GRisk ofinju ryor fata linj ur yd ue tomalfu nctions inthew indo wairbag
If th ew indo wairbag ismalfunct ioning,itmight betrigg ered unint entionall yorm ight notb etrigg ered atall in
th ee vent ofan acci dent with high deceler ation. #
Have thew indo wairbag checkeda nd repair edimmediat elyataq ualif iedspec ialistworks hop. #
Consult aqualif iedspec ialistworks hop immediat ely.
Front Passeng erAirb agDis-
ab led See Operator 'sMan-
ua l *T
hefront passeng erairbag hasbeen disabl edeve nthough anadult orap erson witha na dult statur eiso nthe front
passeng erseat. Ifadditional forc es area pplied tothes eat, thew eight thes ystemd etects maybetoo low. &
WARNIN GRisk ofinju ryor fata linj ur yd ue toad isable dfront passe nger airbag
If th ef ront passeng erairbag isdisabled, thef ront passeng erairbag willnotb ed eplo yedi nt he event ofan acci‐
dent andcann otper form itsintended protect ivef unc tion . 49
4
Displa ymessag esand warning/ indic ator lam ps

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
Place theKey inthe
Marked SpaceSeeOpera-
tor's Manual *S
mar tKey detection ismal functi oning. #
Chang ethe location oftheS mar tKey inthev ehicle. #
Place theS mar tKey inthem arke ds pace fors tartin gt he engine withthe Smar tKey (/ pag e173).
Á
Don't Forget YourKey *A
warning tone also sou nds. Thism essage reminds yout ot akey our keyw ithy ou when youl eave thev ehicle. Lights
Displa
ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
0049 Check LeftLow
Beam (exa mp le) *T
hecor responding lightsourceisfaulty . #
Driveo ncarefull y. #
Con sult aqualif iedspec ialistworks hop immediat ely.
% LED lightbulbs: thed ispla ymessag efor thec orresponding lampappea rsonl yw hen allthel ight-emitt ingdiodes
in thel am parefaulty . 498
Displaym essag esand warning/ indic ator lam ps

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
0049 Malfunct ionSee Opera-
tor’s Manual *T
heexterior lighting ismalfunct ioning. #
Consult aqualif iedspec ialistworks hop.
0049 Automatic HeadlampMode
Inoperative *T
helight sensor ismalfunctionin g. #
Consult aqualif iedspec ialistworks hop.
0049 Act ive Headla mpsInopera-
tive *T
heactiv eheadla mpsaremalfunctioning. #
Consult aqualif iedspec ialistworks hop.
0049 Switch OnHeadla mps *Y
ouared riving without low- beam headlam ps. #
Turn thel ight switc htot he 0058 or0058 position. Displa
ymessag esand warning/ indic ator lam ps 499

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions
0049 Switc hOffLights *Y
ouarel eaving thev ehicle andthel ights ares tills witc hed on. #
Turn thel ight switc htot he 0058 position.
0049 Int ell. Light System Inoper-
ative *T
heIntellig entLight System isfaulty .The light ingsystem continues tofunction proper lywit hou tthe function sof
th eI ntellig entLight System. #
Consult aqualif iedspec ialistworks hop.
Adaptive Highbeam Assist
Currently UnavailableSee
Operator's Manual *A
dap tiveH ighbeam Assistist em por arilyu navailable.
The system limits have been reac hed (/page153). #
Driveo n.
Once thec ause ofthep roblem isno long erpresent ,the system will beavailable again. TheAdap tiveH ighbeam
As sist Now Available displaymessag ew illappear .
Adap tiveH ighbeam Assist
In oper ative *A
daptiveH ighbeam Assistism alfunc tioning. #
Consult aqualif iedspec ialistworks hop.
Adaptive Highbeam Assist
Camera ViewRestricted
See Operator's Manual *T
hecamer aviewi srestrict ed. Possible causes are:
R Dirtonthe windshield inthec amer a'sfield ofvision 500
Displa ymessag esand warning/ indic ator lam ps

Disp
laym essag es
Possible causes/conseq uencesand0050 0050
Solutions #
Drivec arefull yonas uitable stre tcho froad, making slightsteer ing movements atas peed above19 mp h
(30 km/ h). #
Ifth ed ispla ymessag edoes notd isappear ,con sult aqualif iedspec ialistworks hop immediat ely.D rive car efully .
0025
00E5
Inoperative SeeOperator's
Manual *
ABS andESP®
arem alfunctioning.
Ot her driving systems anddriving safetys ystems mayalso bemalfunct ioning.
The brak es ystemw illcon tinue tooper aten ormally .Braking distance mayincr ease inan eme rgency braki ng situa ‐
tio n. &
WARNIN GRisk ofskid ding ifABS andESP®
arem alfuncti oning
If ABS andESP®
arem alfuncti oning,the wheels couldlockw hen braking andESP®
cann otcar ryout vehicle
st abiliz ation.
The steer ing capability andbraking charact eristic sa rethus severely impa ired .The brakin gdista nce inan eme r‐
ge ncy braki ng situa tionc an incr ease. Inadditio n,other driving safetys ystems ares witc hed off. #
Driveo ncarefull y. #
Have ABS andESP®
ch eckedi mmediat elyataq ualif iedspec ialistworks hop. #
Driveo ncarefully . #
Consult aqualif iedspec ialistworks hop immediat ely. 528
Displa ymessag esand warning/ indic ator lam ps