check engine MERCEDES-BENZ E-CLASS WAGON 2020 Owner's Manual

#
Toswitc hon theignit ion:press butt on1
twic e.
The indic ator lam psintheins trument cluster
light up.
The ignit ionisswitc hedoffag ain ifone ofthe
fo llo wing condition sis me t:
R Youdo notst ar tth eve hicle within
15 minut esand thetransmission isin posi‐
tion 005Dortheelectr icpar king brak eis
applied.
R Youpr ess button1 once . St
arting theve hicl e St
arting theve hicl ewith thest ar t/s topbut‐
to n &
DANG ER Risk ofdeat hcause dby
ex haus tga ses
Combus tionengines emitpoisonous exhaus t
ga ses suchas carbon monoxide.Inhaling
th ese exhaus tga ses ishazar dous tohealt h
and leads topoisonin g. #
Neverlea vetheengine or,if pr esent ,
th eauxiliar yheating running inan
encl osedspa cewithout sufficie ntventi‐
la tio n. &
WARNIN GRisk offire cau sed byflam‐
mable material on theex haus tsy stem
Flammable materials brought inby either ani‐
mals orenvironmen talinf luenc esma yignit e
if th ey come intocont actwith hotpar tsof
th eengine orexhaus tsy stem. #
Ther efor e, checkre gular lythat ther e
ar eno flammab lemat erials inthe
engine compartmen tor on theex haus t
sy stem. Re
quirement s:
R The Smar tKey islocat edintheve hicle and
th eSmar tKey batt eryis no tdisc harged. #
Shif tth etra nsmiss iontoposition 005Dor005C. #
Depr essthebr ak epedal andpress butt on
1 onc e. #
Ifth eve hicle does notst ar t:switc hof fnon-
essential consumer sand press butt on1
once. #
Ifth eve hicle still does notst ar tand the
Place theKey inthe Marked SpaceSee
Operator's Manualdisplaymessag ealso
appear sin themultifunc tiondispla y:star t
th eve hicle inemer gency operati on mod e.
% Youcan switchoffth eengine whiledriving
by pressing button1 forabo utthre esec‐
onds orby pressing button1 thre etimes
wit hin thre esecon ds.Besureto obser vethe
saf etyno tesunder "Driving tips"
(/ page15 7).
St arting theve hicl ewith Smar tKey inthe
ma rked spa ce(emer gency oper ation mode)
If th eve hicle does notst ar tand thePlace the
Key inthe Marked SpaceSeeOperator 'sManual
messag eappear sin themultifunc tiondispla y,
yo ucan star tth eve hicle inemer gency operati on
mod e. Dr
iving and parking 15
3

#
Mak esur eth at mar kedspace 2isem pty. #
Remo veSmar tKey 1 from theke yring. #
Place Sma rtKe y1 inmar kedspace 2.
The vehicle willstar taf te ra shor ttime.
If yo ure mo veSmar tKey 1 from mar ked
space 2theengine continues running .Fo r
fur ther vehicle star ts howe ver,Smar tKey 1
mus tbe locat edinmar kedspace 2during
th eent ire jour ney. #
Have Smar tKey 1 checkedat aqu alif ied
spec ialistwo rkshop. If
th eve hicl edoes notst ar t: #
Place SmartKey 1 inmar kedspace 2and
lea veitth er e. #
Depr essthebr ak epedal andstar tth eve hi‐
cle using thest ar t/ stop butt on.
% Youcan also switchon thepo we rsupp lyor
th eignition withth est ar t/ stop butt on. St
arting theve hicl evia Remo teOnline serv‐
ices Cooling
orheating theve hicl eint erior before
co mmenci ngyour jour ney
% This function isno tav ailable inall coun tries.
If yo ust ar tth eve hicle viayour smar tphon e,the
pr ev iousl yselec tedair con dition ingadjus tment
is activ e.
En sur eth efo llo wing beforest ar tin gth eengine:
R The legalstipulation sin thear ea wher eyo ur
ve hicle ispar kedallo wengin est ar tin gvia
smar tphon e.
R Itis saf eto star tand runth eengine where
yo ur vehicle ispar ked. R
The fuel tank issu fficien tly filled.
R The star terbatt eryis suf ficie ntly charge d.
% Youcan also setth ete mp eratur ewit hyo ur
smar tphon e.Info rm atio non Mer cedesme
con nectand other services: https://
www .mercedes.me
This funct ionisno tav ailable forall model s.
Char ging thebat tery bef orecommencing
yo ur jour ney
% This function isno tav ailable inall coun tries.
If th eve hicle batteryis disc harged, youre cei vea
messa geon your smar tphon e.Youcan then
st ar tth eve hicle withth esmar tphon eto charge
th ebatt ery. The vehicle isaut omaticall y
switc hedoffaf te rte nminu tes.
Ensur eth efo llo wing beforest ar tin gth eengine:
R The legalstipulation sin thear ea wher eyo ur
ve hicle ispar kedallo wengin est ar tin gvia
smar tphon e.
R Itis saf eto star tand runth eengine where
yo ur vehicle ispar ked.
R The fuel tank issu fficien tly filled. 15
4
Driving and parking

R
freq uent operation inmount ainouste rrain or
on poor road sur faces
R whe nth eengine isoftenleft idling forlong
per iods
R oper ation inpar ticula rly dus tycond ition s
and /orif air -rec ircula tion mod eis freq uen tly
used
In these orsimilar operating conditions ,ha ve the
int erior airfilt er ,engin eair clean er,engin eoil
and oilfilt er etc. chang edmor efreq uent ly.The
tir es mus tbe checkedmor efreq uentl yif th e
ve hicle isoper ated under increased loads. Fur‐
th er information canbeobt ained ataqu alif ied
spec ialistwo rkshop. Batt
erydisconne ctionperiods The
ASSYSTPL US service interva ldisp lay
can onlycalculat eth eser vice dueda te when
th ebat tery isconnect ed. #
Notedown theser vice duedatedispla yedon
th eins trument displaybef orediscon necting
th ebatt ery(/ page366). Engine
compartment Ac
tiv ehoo d(pe des trian protection) Oper
ation oftheact ive hood (pedestrian pro‐
te ction )
In cer tain acc ident situations,th erisk ofinjur y
to pedes trians canbereduced bytheactuation
of theactiv ehood. Therear area ofthehood is
ra ised byappr oximat ely3 in (85 mm).
Fo rth edr ive to thewo rkshop, rese tth etrig‐
ge redactiv ehood yourself .Af terth eactiv ehood
has been trigg ered, pedes trian protect ion may
be limit ed.
A qu alif ied spec ialistwo rkshop mustre -ins tate
th efull func tionality oftheactiv ehood.
The activ ehood isno tav ailable inall coun tries.
Re setting theact ive hood &
WARNIN GRisk ofburnsfrom hotcom‐
ponent partsintheengine compartmen t
Cer tain com pone ntsin theengine compart‐
ment canbevery hot,e.g. theengine, the
ra diat orand partsof theex haus tsy stem. #
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedin
th efo llo wing. #
With your han dflat, push down active hood
1 inthear ea around thehing eson both
sides (arrow s).
In doing so,theactuat orisdepr essur ized
and youma yhear ahiss ingsoun d.
The engin ehood musten gage inposit ion. #
Ifth eactiv ehood canberaised slight lyat
th ere ar inthear ea ofthehing es,repeat the
st ep until iteng ages cor rectl y. Maint
enance andcare36
7

Engine
oil Chec
kingtheengine oilleve lusing theoil
dip stick &
WARNIN GRisk ofburnsfrom hotcom‐
ponent partsintheengine compartmen t
Cer tain com pone ntsin theengine compart‐
ment canbevery hot,e.g. theengine, the
ra diat orand partsof theex haus tsy stem. #
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedin
th efo llo wing. Re
quirement s:
R The engin emus tha ve an oildips tick.Ifno t,
th eengine oilleve lcan becheckedonl ywit h
th eon- boar dcom puter(/ page37 0).
Dep endingontheengine, theoil dips tickma ybe
ins talled intheengine compartmen tin dif fere nt
lo cati ons.
The waitin gtim ebef orech ecking theoil leve l
when theengine isat nor mal oper ating temp era‐
tur eis five minut es. #
Park theve hicle onaleve lsur face. #
Pulloil dips tic k1 outand wipe off. #
Slowly slide oildips tic k1 intoth eguide
tube tothestop, and take itout again afte r
appr oximat elyth re esecon ds.
R Oilleve lis cor rect:oil leve lis be tween 2
and 3.
R Oilleve lto olow: oil leve lis at 3 or
belo w. R
Oilleve lto ohigh: oilleve lis abo ve2 . #
Ifth eoil leve lis toolow, add 1.1 US qt
(1 liter) ofengine oil. #
Ifth eoil leve lis toohigh, drain offexc ess
engine oil.Consult aqu alif ied spec ialist
wo rkshop.
Chec kingtheengine oilleve lusing theon-
boar dcom puter
Re quirement s
The engin eoil leve lis de term ined during drivin g.
De term inin gth eengine oilleve lcan take up to
30 minut eswit hanor mal driving style and even
long erwit han act ive dr ivin gst yle.
In order torecei veare sult asquickl yas possi‐
ble:
R Warm uptheengine
R Park theve hicle onaleve lsur face
R Lea vetheengine running atidle spe ed 37
0
Maint enance andcare

On-boar
dcom puter:
4 Service 5
Engine OilLevel
Yo uwill see oneof thefo llo wing mess ages on
th emultifunc tiondispla y:
R Measuring Engine OilLevel.. .:measur ement
of theoil leve lis no tye tpo ssi ble. #
Repeat there qu estaf te ra maximu mof 30
minut es'driving.
R Engine OilLevel OKand thebar displa yfo r
indic atingth eoil leve lon themultifunc tion
displa yis green and isbe tween "min" and
"max": theoil leve lis cor rect.
R Engine OilLeve lAdd 1.0land thebar displa y
fo rindica tingtheoil leve lon themultifunc ‐
tion displa yis orang eand isbelo w"min": #
Add1.1 US qt(1l)of engine oil.
R Red uce Engine OilLevel andthebar displa y
fo rindica tingtheoil leve lon themultifunc ‐
tion displa yis orang eand isabo ve"max ": #
Drain offan yex cess engineoilthat has been
added. Todo so, con sult aqu alif ied spec ialist
wo rkshop.
R For Engine OilLevel Switch Ignition On: #
Switc hon theignition tocheckth eengine oil
le ve l.
R Engine OilLeve lSyst emInoperat ive:sensor
fa ulty ornotins erted. #
Consult aqu alif ied spec ialistwo rkshop.
R Engine OilLevel System Currently Unavail.: #
Close thehood.
Re filling engine oil &
WARNIN GRisk ofburnsfrom hotcom‐
ponent partsintheengine compartmen t
Cer tain com pone ntsin theengine compart‐
ment canbevery hot,e.g. theengine, the
ra diat orand partsof theex haus tsy stem. #
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedin
th efo llo wing. &
WARNIN GRisk offire and injuryfrom
eng ineoil
If eng ineoilcom esintocon tact with hot
com ponent partsintheengine compart‐
ment ,it ma yignit e. #
Mak esur eth at no eng ineoilisspille d
ne xt to thefiller open ing. #
Allo wtheengine tocool offand thor‐
oughl yclean theengine oilfrom com po‐
nen tpar tsbef orest ar tin gth eve hicle. *
NO
TEEngi nedama gecau sed byan
inc orrect oil filt er ,inc orrect oil oraddi‐
tiv es #
Donotus eengi neoilsor oil filt er s
whic hdo notcor respond tothespecif i‐
cation sex plicitl ypr escr ibed forth e
ser vice interva ls. #
Donotalt er theengine oiloroil filt er in
or der toachie velong erchang eint erva ls
th an presc ribed. #
Donotuse additiv es. Maint
enanc eand care37
1

&
WARNIN GRisk ofscal ding from hot
cool ant
The enginecool ingsystem ispressur ized,
par ticular lywhen theengine iswa rm.If yo u
open thecap, youco uld bescalded byhot
coolant spraying out. #
Letth eengine cooldown beforeopen‐
ing thecap. #
When opening thecap, wearprotect ive
gl ove sand safetygl asses . #
Open thecap slowlyto release pres‐
sur e. #
Park theve hicle onaleve lsur face. #
Checkth ecoolant temp eratur edispla yin the
ins trumen tclus ter.
The coolant temp eratur emus tbe inthebo t‐
to m quarterof thete mp eratur edispla y. #
Slowly turncap 1cou nter-cloc kwiseto
re lie ve ove rpressur e. #
Continue turning cap1count er-cloc kwise
and remo veit.
The coolan tle ve lis cor rect inthefo llo wing
cases :
R ifth eengine iscold, uptomar kerbar 2
R ifth eengine iswa rm,up to0.6 in(1.5 cm)
ove rmar kerbar 2 #
Ifnecessar y,add coolant that has been
appr ovedfo rMer cedes-Benz.
R Further information oncoolant
(/ page44 3). Ad
ding washer fluid tothewindsh ield
wa sher system &
WARNIN GRisk ofburnsfrom hotcom‐
ponent partsintheengine compartmen t
Cer tain com pone ntsin theengine compart‐
ment canbevery hot,e.g. theengine ,th e
ra diat orand partsof theex haus tsy stem. Maint
enanc eand care37
3

#
When giving star tin gassis tance, alwa ys
mak esur eth at youon lyconnect bat‐
te ry term inals withident icalpolar ity. #
Dur ing star tin gassis tance, youmus t
obse rveth edescr ibedorder forcon‐
necting anddisconnecting thejum per
cables. #
Donotcon nect ordiscon nectthebat‐
te ry cla mp swhile theengine isrunning . &
WARNIN GRisk ofexplosion during
ch argin gpr oce ssand star tin gassis tance
Dur ing thech argin gpr oce ssand star tin g
assis tance, thebatt eryma yre lease anexplo‐
siv ega smixtur e. #
Avoid fire ,open flames ,cr eat ing spar ks
and smoking. #
Mak esur eth at ther eis suf ficie ntventi‐
la tio ndu ring thech argin gpr oce ssand
dur ing star tin gassis tance. #
Donotle an ove ra batt ery. &
WARNIN GRisk ofexplosion from afro‐
zen battery
A disc hargedbatt eryma yfreeze attemp era‐
tur es slightl yabo veorbelo wfreezing point.
Dur ing star tin gassis tance orbatter ych arg‐
ing ,bat tery gasma ybe released. #
Alw aysth aw afroz en bat tery out firs t
bef orech argin git or per form ing star t‐
ing assis tance. If
th eindicat or/warning lampsintheins trument
clus terdo notlig ht up atlow temp eratur es,itis
ve ry likelyth at thedisc hargedbatt eryhas fro‐
zen .In this case youma yne ither jump-start the
ve hicle norcharge thebatt ery.
The service life of abatt eryth at has been
th awe dma ybe dramaticall yshor tened .The
st ar tin gch aract eristic sma ybe impair ed,espe ‐
ciall yat low temp eratur es.
It is recomme ndedthat youha ve ath aw ed bat‐
te ry checkedat aqu alif ied spec ialistwo rkshop. All
vehicl es
* NO
TEDama gecau sed bynum erou sor
ex tende datt em ptsto star tth eengine Nu
me rous orextende datt em ptsto star tth e
engine maydamag eth ecat alytic converter
due tonon-co mbusted fuel. #
Avoid numer ousand extende datt em pts
to star tth eengine. Obser
vethefo llo wing pointsdur ing star tin g
assis tance and when chargin gth ebatt ery:
R Onlyuse undamag edjum per cables/c harg‐
ing cables withasuf ficie ntcross -secti onand
insu late dte rm inal clam ps.
R Non-insulat edpar tsof thete rm inal clam ps
mus tno tcom eint ocon tact with other metal
par tswhile thejum per cable/c harging cable
is con nect edtothebatt ery/jum p-start con‐
nectio npoi nt.
R The jumper cable/c harging cable mustno t
com eint ocon tact with anypar tswhic hma y
mo vewhen theengine isrunning . Br
ea kdo wnassist anc e393

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
Place theKey inthe
Marked SpaceSeeOpera-
tor's Manual *S
mar tKey detection ismal functi oning. #
Chang eth elocation oftheSmar tKey intheve hicle. #
Place theSmar tKey inthemar kedspace forst ar tin gth eengine withth eSmar tKey (/ pag e15 3).
Á Don't Forget YourKey *A
warning tone also sou nds. Thismes sage reminds youto take your keywit hyo uwhen youlea vetheve hicle. Lights
Displa
ymessag es
Possible causes/conseq uencesand0050 0050
Solutions
0049 Check LeftLow
Beam (exa mp le) *T
hecor responding lightsourceisfaulty . #
Drive on car efull y. #
Con sult aqu alif ied spec ialistwo rkshop immediat ely.
% LED lightbul bs: thedispla ymessag efo rth ecor responding lampappea rsonl ywhen allthelight- emitt ingdiodes
in thelam par efa ulty . Dis
playmes sagesand warning/ indic ator lam ps 453

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions #
Alw aysswitc hof fth eengine beforeopening theta ilg ate. #
Neverdr ive wit hth eta ilg ateopen . #
Close theta ilg ate.
006F Rear LeftBackrest Not
Latc hed (exa mp le) *T
heseat backres tof thecor responding seatisno teng aged. #
Foldtheseat backres tbac kuntil iteng ages.
00B2 Check Washer Fluid *T
hewasher fluid leve lin thewa sher fluid reser voirhas dropped belowtheminimum. #
Refill wa sher fluid (/ page37 3). 460
Displaymessa gesand warning/ indic ator lam ps

Engine
Displa
ymes sages
Possible causes/conseq uencesand0050 0050
Solutions
00BD Check Coolant LevelSee
Operator' sManual *T
hecoolant leve lis toolow.
* NO
TEEngi nedama gedue toinsuf ficie ntcool ant #
Avoid long journeys wit hins ufficie ntcool ant. #
Addcoolant (/page37 2). #
Have thecooling system checkedat aqu alif ied spec ialistwo rkshop.
ÿ Coola ntToo HotStop Vehi-
cle Turn Engine Off *T
hecoolant istooho t. #
Stop theve hicle immediat elyinaccor dance withth etraf fic condi tions andswitchof fth eengine. &
WARNIN GDang erofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edordur ing afire intheengine compartmen t,yo uco uld
co me intoco ntact withho tga ses orother escaping operating fluids. #
Beforeopen ingthehood, allowtheengine tocool down. #
Intheeve ntofafire intheengine compartmen t,ke ep thehood closed andcallthefire ser vice. #
Waitunt ilth eengine hascooled down. #
Mak esur eth at theair supply tothera diat orisno tim pair ed. Displa
ymessag esand warning/ indic ator lam ps 46
1