2020 MERCEDES-BENZ S-CLASS battery

The
trunk lidcould beopened orclosed uninten‐
tionall y,in thef ollo wing situations:
R Ifap erson 'sarms orlegs arem ovingi nt he
sensor detection rang e, e.g .whenp olish ing
th ev ehicle orpic king upobject s.
R Ifobject saremo vedo rplaced behind the
ve hicle, e.g.tensi oni ng stra ps orlugg age.
R Ifclam ping stra ps, tarp so rother coverings
ar ep ulledo verthe bum per.
R Ifap rotectivem atwit hal engt hreac hing
ove rthe trunk silldown intot he detection
ra ng eo fthe sensor sisu sed.
R Ifth ep rotectivem atisno ts ecur edcor rectly .
R Whe nworking onthet railer coupling, trailer s
or rear bicy clerack s.
Deactiv ateK EYLES S-GO(/page65)or do not
car rytheS mar tKey about your per son insuc h
sit uatio ns. Swit
ching separ atet runk locking on/of f If
yo uc entrall yu nlo ckthev ehicle whileseparate
loc king isactiv ated, thet runk will remain locked. #
Toswitc hon:slide thes witc htop osition
0048. #
Toswitc hoff:slide thes witc htop osition
0047.
% Ifan acciden thas been detected, thet runk
will unloc keveni fsep aratel oc kin gis
switc hedon. Un
loc king thet runk from insid ewitht he
eme rgency release Re
quirement s:
R The 12Vvehicle batteryi sc onn ectedand
ch arge d. #
Press emer gency release button1 brief ly.
The trunk lidwill unloc kand open. 78
Opening andclosing

#
Mak esuret hat mar keds pace 2isem pty. #
Remo veSmar tKey 1 from thek eyring. #
Place Sma rtKe y1 inmar keds pace 2.
The vehicle willstar ta fter as hor ttime.
If yo ur emo veSmar tKey 1 from mar ked
space 2thee ngine continues running .For
fur ther vehicle star ts howe ver,Smar tKey 1
mus tbelocat edinmar keds pace 2during
th ee ntirej our ney. #
Have Smar tKey 1 checkeda taq ualified
spec ialistworks hop.
If th ev ehic ledoe snotstar t: #
Lea veSmar tKey 1 inmar keds pace 2. #
Depr esstheb rake pedal andstar tt he vehi‐
cle using thes tart/s topb utton.
% Youc an also switchon thep owersuppl yor
th ei gnition withthe star t/ stop butt on. St
arting thev ehic levia Remo teOnline serv‐
ices Cooling
orheating thev ehic leint erior before
comme ncingyour jour ney
% This function isno ta vailable inall coun tries.
If yo us tart thev ehicle viayour smar tphon e,the
pr ev iousl yselec teda ircon dition ingadjus tment
is activ e.
En sur ethe follo wing befores tartin gt he engine:
R The legalstipulation sint he area wher eyour
ve hicle ispar keda llowe ngin estarting via
smar tphon e.
R Itis saf etos tart and runt he engine where
yo ur vehicle ispar ked.
R The fuel tank issu fficien tlyf illed.
R The star terb att eryi ss ufficie ntly charge d. %
Youc an also setthe temp eratur ewithy our
smar tphone. Information onMer cedes me
connec tand other services: https://
www .mercedes.me
This funct ionisno ta vailable fora llmodel s.
Char ging theb attery bef orec ommencing
yo ur jour ney
% This function isno ta vailable inall coun tries.
If th ev ehicle batteryi sd ischar ged, your eceiv ea
messa geon your smar tphon e.Youc an then
st ar tt he vehicle withthe smar tphone tocharge
th eb attery. The vehicle isaut omaticall y
switc hedoffa fter tenm inutes.
Ensur ethe follo wing befores tartin gt he engine:
R The legalstipulation sint he area wher eyour
ve hicle ispar keda llowe ngin estartin gv ia
smar tphon e.
R Itis saf etos tartand runt he engine where
yo ur vehicle ispar ked.
R The fuel tank issu fficien tlyf illed. 17
4
Driving and parking

#
Turn dial 1.
CO MAND :multimedia system
L REAR: rear displa y,lef t
R REA R:rear displa y,right
Re plac ingbatt eries( remo tecont rol)
Re quirement s:
R Ther earetwot ype AAA,1.5Vb atteries for
th er emo tecontr ol.
Obs erve thes afet ya nd environ men taln ote
( / pag e389) .
The batteryc om par tmen tisl ocat edon the
re ve rses ide. #
Push thec atc htab down wardsa nd take off
th eb atteryc om par tmen tcove r. #
Remo vedisc hargedb atteries from theb at‐
te ry com partment. #
Inser tnew batt eries. Obser vethep olar ity
mar king sonthe batt eries and batteryc om‐
par tmen t. #
Firstplace theb atteryc om par tmen tcover
on ther etaining lugs intheb atteryc om par t‐
ment . #
Allo wthe catc htab toeng agei nt he batt ery
com partment. Headphones
Headphones
overview 1
Indic ator lam p
2 On/ offs witc h
3 Volume control
Ad jus tthe fito fthe headphones :
R Pull both sides oftheh eadphones outwards. Multimedia
system 393

The
batteryc om par tmen tisl ocat edon thel eft
headphone. #
Switc hthe headphones off. #
Turn batt eryc om par tmen tcove r1 count er-
cloc kwise andremo ve. #
Remo vedisc hargedb atteries from theb at‐
te ry com partment. #
Inser tnew batt eries. Obser vethep olar ity
mar kings ontheb atteries and batteryc om‐
par tmen t. #
Replace batteryc om par tmen tcover 1 and
tur nitc loc kwise untiliteng ages. #
Switc hthe headphones on.
If th eb atteries have been insertedc orrectly ,
th ei ndicat orlam pwilllight upgreen. Blu-
rayd rive overvie w 1
Disc slot
2 Toinse rt/eject data stor ag em edium
Depending onthev ehicle equipment, theB lu-ra y
dr ivei slocat edinthef ollo wing positions:
R atther ear ofthec ent ercon sole under the
aut omat icclim atec ontrol pane l Mult
imed iasystem 395

Risk
ofexplosion. Fir
e,open flames andsmokinga re
pr ohibi tedw hen handling theb attery.
Av oid creating sparks. Ele
ctroly teor batt erya cid iscor ro‐
siv e.Avoid cont actwiththe skin, eyes
or clo thing. Wearsuit able protect ive
clo thing, inpar ticular glove s,an
apr onand aface mask.Immedia tely
ri nse electr olyteor acid splashes off
wit hc lean water.Con sult adoctorif
necessar y. We
arsaf etyg lasses. Ke
ep childr enaway. Obser
vethis Opera tor's Manua l.
Obser vethef ollo wing ifyo ud on otintendt ou se
th ev ehicle overane xtende dperiodo ftime:
R Activates tandb ymode .
R Alternat ivel y: con nectthe batt eryt oab at‐
te ry charge ra pprove db yM ercedes-Ben zor
consult aqualif iedspec ialistworks hop to
discon nectthe batt ery. No
teso ns tarting assis tan ceando nchar g‐
ing the1 2Vb attery Ve
hicl eswith alithium-ion battery
When chargin gthe batt erya nd dur ing star tin g
assis tance, alwa ys use thej um p-startconne c‐
tio np oint inthee ngine compartmen t. *
NO
TEDama ging theb atteryt hrough
ove rvolt age When
chargin gu singab atte ry charge rw ith‐
out amaximu mcharging voltag e, theb attery
or thev ehicle electronics maybed amag ed. #
Onlyusebatt eryc harg ersw itham axi‐
mum chargin gvoltageo f14.8 V. All
other vehicl es
When chargin gthe batt erya nd dur ing star tin g
assis tance, alwa ys use thej um p-start connec‐
tion pointinthee ngine compartmen t.
* NO
TEDama ging theb atteryt hrough
ove rvolt age When
chargin gu singab atte ry charge rw ith‐
out amaximu mcharging voltag e, theb attery
or thev ehicle electronics maybed amag ed. #
Onlyusebatt eryc harg ersw itham axi‐
mum chargin gvoltageo f14.8 V. Br
ea kdo wnassista nce 43
3

&
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

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

#
Dur ing star ting assistance :st ar tt he
engine ofthed onor vehicle andruna tidle
spe ed. #
Connect then egativ epole ofthed onor bat‐
te ry and grou nd point 5 ofyour ow nv ehicle
by usin gthe jum per cable/c harging cable.
Begin withthe donor batteryf irst . #
During star ting assistance :st ar tt he
engine ofyour ow nv ehicle. #
Dur ing thec har gingproce ss:st ar tt he
ch argin gp roce ss. #
Dur ing star ting assistance :le tt he engines
ru nf or severalm inut es. #
Dur ing star ting assistance :bef ored iscon‐
necting thej um per cable, switchonane lec‐
tr ical consumer inyour ow nv ehicle, e.g.the
re ar wind owdefr ostero rlighting.
When thes tartin ga ssis tance/c harging proce ss
is com plet e: #
First,r emo vethej um per cable/c harging
cable from ground point 5and negative
pole ofthed onor battery, then from positiv e
clam p4 and positiv epole ofthed onor bat‐ te
ry.B egi ne acht imew itht he cont acts on
yo ur ow nv ehicle firs t. #
Afterr emo ving thej um per cable/c harging
cable, closecover3 ofposi tivec lam p4.
Fu rther information canbeobt ained ataq uali‐
fi ed specialis tworks hop. Re
plac ingthe 12Vb attery #
Obs erve then otes on the1 2Vb attery
(/ page431).
Mer cedes-Benz recomme ndsthat youh avet he
12 Vb atteryr eplaced ataq ualif iedspec ialist
wo rkshop, e.g.atan aut hor ized Mercedes-Benz
Cent er.
Obser vethef ollo wing notesi fy ou wantto
re place theb atteryy our self:
R Alw aysr eplace afaulty battery wit hab attery
whic hmeets thes pecif icvehicle requ ire‐
men ts.
The vehicle iseq uipped witha nA GM tech nol ‐
ogy batter y( Ab sorbe ntGlas sM at)o ral ith‐
iu m- ionb attery. Fu llve hicle functionality is onl
yguar anteed witha nA GM batteryo rlith‐
ium-ion battery. Fo rs afet yr easons,
Mer cedes- Benzrecomme ndsthat youo nly
use batteries whic hhave been tested and
appr ovedfor your vehicle byMer cedes-Ben z.
R Carryove rdetac hable parts,s uc ha svent
ho ses, elbowfittingo rterminal covers from
th eb atteryb eing replaced.
R Mak esuret hat thev ent hose isalw aysc on‐
nect edtotheo riginal opening onthes ide of
th eb attery.
Ins tallan ye xisting orsupp lied cellca ps .
Ot he rw ise, gases orbatt erya cid could
escape.
R Mak esuret hat detach able partsarer econ ‐
nec tedi nt he same way. To
ws tarting ortowing away Pe
rm itted towing methods Plug-
inhybrid: obser vethen otes intheS upple‐
ment .Other wise, youm ayfailto recogni zedan‐
ge rs. 436
Breakdo wnassis tance