2019 MERCEDES-BENZ E-CLASS CABRIOLET engine

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. 0007
Notedown theser vice duedatedispla yedon
th eins trument displaybef orediscon necting
th ebatt ery(→ pag e34 4). 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 000A
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. 0007
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedinthe
fo llo wing. 0007
With your han dflat, push down active hood
1 inthear ea around thehing eson both
sides (arrow s).
The hood musteng agein position. 0007
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 andcare34
5

Opening/closing
thehood 000A
WARNIN GRisk ofacci dent ifth eengine
hood isunlatc hedwhile driving
An unloc kedengin ehood mayopen upwhen
th eve hicle isin mo tion andblockyo ur vie w. 0007
Neverunla tchth eengine hoodwhile
dr iving. 0007
Beforeev erytrip, ensur eth at the
engine hoodislatc hed. 000A
WARNIN GRisk ofacci dent andinjury
when openingand closingtheengine
hood
When opening orclosing theengine hood,it
ma ysuddenl ydr op intoth eend position .
Ther eis arisk ofinjur yfo ran yone inthe
engine hood's rang eof mo vement. 0007
Onlyopen orclose theengine hood
when ther ear eno per sons inthe
engine hood's rang eof mo vement. 000A
WARNIN GDang erofburnswhen open‐
ing thehood
If yo uopen thehood when theengine has
ove rheat edordur ing afire intheengine
com partmen t,yo uco uld come intoco ntact
wit hho tga ses orother escaping operating
fl uids. 0007
Beforeopen ingthehood, allowthe
engine tocool down. 0007
Intheeve ntofafire intheengine com‐
par tmen t,ke ep thehood closed and
call thefire ser vice. 000A
WARNIN GRisk ofinju rydue tomo ving
par ts
Cer tain com pone ntsin theengine compart‐
ment maycon tinue tomo veorsuddenly
mo veagain evenaf te rth eignition hasbeen
switc hedoff,e.g. thecooler fan.
Ma kesur eof thefo llo wing beforeper form ing
ta sk sin theengine compartmen t: 0007
Swi tchth eignition off. 0007
Neverto uc hth edang erzon esur round ‐
ing movingco mp onent parts,e.g. the
ro tatio nar ea ofthefa n. 0007
Remo vejewe lry and watche s. 0007
Keep items ofclo thing and hair away
fr om moving parts. 000A
WARNIN GRisk ofinju ryfrom touc hin g
co mp onent partsunder voltag e
The ignit ionsystem and thefuel injec tion
sy stem workund erhigh voltag e. Ifyo uto uc h
co mp onent partswhic har eunder voltag e,
yo uco uld recei vean elec tric shoc k. 0007
Neverto uc hco mp onent partsof the
ignit ionsystem orthefuel injec tionsys‐
te m when theignition isswitc hedon. 000A
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. 34
6
Maint enance andcare

0007
Allow theengine tocool down and only
to uc hco mp onent partsdescr ibedinthe
fo llo wing. 000A
WARNIN GRisk ofinju ryfrom using the
winds hieldwiper swhile theengine hood
is open
When theengine hoodisopen andthewind‐
shield wipersar ese tin mo tion ,yo ucan be
tr apped bythewiper linkage. 0007
Alw aysswitc hof fth ewindshield wipers
and ignition beforeopening theengine
hood. 0007
Toopen: pullleve r1 torelease thehood. 0007
Push handle 1ofthehood catchupw ards
and liftth ehood byappr oximat ely15 in
(40 cm). 0007
Toclose: lowe rth ehood andletit fallfrom a
height ofappr oximat ely8 in (20 cm). 0007
Ifth ehood canstill be lifte dslightl y,open
th ehood again and close itwit halittle more
fo rc euntil iteng ages cor rectl y. Maint
enance andcare34
7

Engine
oil Chec
kingtheengine oilleve lusing theoil
dip stick 000A
WARNIN GRisk ofburnsfrom hotcom‐
ponent partsintheengine compartmen t
Cer tain com pone ntpar tsintheengine com‐
par tmen tcan bevery hot,e.g. theengine,
th ecooler andpartsof theex haus tsy stem. 0007
Letth eengine cooldown and only
to uc hth ecom ponen tpar tsdescr ibed
as follo ws . Re
quirement s:
The engin emus tha ve an oildips tick.Ifno t,th e
engine oilleve lcan becheckedonl ywit hth eon-
boar dcom puter.
Depen dingontheengine, 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. 0007
Park theve hicle onaleve lsur face. 0007
Pulloil dips tic k1 outand wipe off. 0007
Slowly slide oildips tic k1 intoth eguide
tube tothestop, and pullitout 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 . 0007
Ifth eoil leve lis toolow, add 1.1 US qt
(1 liter) ofengine oil. 0007
Ifth eengine oilleve lis toohigh, have the
exc ess engine oilremo vedimmediat elyata
qu alif ied spec ialistwo rkshop.
Chec kingtheengine oilleve lwit han on-
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 parkth eve hicle onaleve lsur face.
R leav eth eengine running atidle spe ed. 34
8
Maint enance andcare

On-boar
dcom puter:
Service EngineOilLevel
Yo uwil lsee one ofthefo llo wing messa gesin
th emu ltifunct iondisp lay: 0007
Measuring EngineOil Level... :measur ement
of theoil leve lis no tye tpo ssi ble. Re peat the
re qu estaf te ra maximu mof 30 minut es'driv‐
ing. 0007
Engine OilLevel OKand thebar displa yfo r
indic atingth eoil leve lin themultifunc tion
displa yis green and isbe tween "min" and
"max": theoil leve lis cor rect. 0007
Engine OilLeve lAdd 1.0land thebar displa y
fo rindica tingtheoil leve lin themultifunc tion
displa yis orang eand isbelo w"min": add
1. 1 US qt(1l)of engine oil. 0007
Red uce Engine OilLevel andthebar displa y
fo rindica tingtheoil leve lin themultifunc tion
displa yis orang eand isabo ve"max ":drain
of fth eex cess engineoil.Co nsul ta qu alif ied
spec ialistwo rkshop. 0007
For Engine OilLevel Switch Ignition On:
switc hon theignition tocheckth eengine oil
le ve l. 0007
Engine OilLeve lSyst emInoperat ive:sensor
def ective or notinse rted. Consult aqu alif ied
spec ialistwo rkshop. 0007
Engine OilLevel System Currently Unavail.:
close thehood.
Ad ding engine oil 000A
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. 0007
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedinthe
fo llo wing. 000A
WARNIN GRisk offire and injuryfrom
eng ineoil
If eng ineoilcom esintocon tact with hot
com ponent partsintheengine compart‐
ment ,it ma yignit e. 0007
Mak esur eth at no eng ineoilisspille d
ne xt to thefiller open ing. 0007
Allo wtheengine tocool offand thor‐
oughl yclean theengine oilfrom com po‐
nen tpar tsbef orest ar tin gth eve hicle. 000E
NO
TEEngi nedama gecau sed byan
inc orrect oil filt er ,inc orrect oil oraddi‐
tiv es 0007
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. 0007
Donotalt er theengine oiloroil filt er in
or der toachie velong erchang eint erva ls
th an presc ribed. 0007
Donotuse additiv es. Maint
enanc eand care34
9

0007
Followtheins truction sin theser vice
int erva ldispla yre ga rding theoil
ch ang e. 000E
NO
TEDama gecau sed byaddin gto o
muc hengine oil To
omuc hengine oilcan damag eth eengine
or thecat alytic converter . 0007
Have excess engineoilremo vedat a
qu alif ied spec ialistwo rkshop. 0007
Turn cap 1cou nter-cloc kwiseand remo ve
it. 0007
Addengin eoil. 0007
Replace cap1and turnit cloc kwise asfar
as itwill go. 0007
Chec kth eoil leve lag ain (→pag e348 ). Chec
kingcoolant leve l 000A
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. 0007
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedinthe
fo llo wing. 000A
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. 0007
Letth eengine cooldown beforeopen‐
ing thecap. 0007
When opening thecap, wearprotect ive
gl ove sand safetygl asses . 0007
Open thecap slowlyto release pres‐
sur e. 350
Maintenanceand care

0007
Park theve hicle onaleve lsur face. 0007
Checkth ecoolant temp eratur edispla yin the
ins trumen tclus ter.
The coolant temp eratur emus tbe belo w
15 8°F (70 °C). 0007
Slowly turncap 1count er-cloc kwise to
re lie ve ove rpressur e. 0007
Continue turning cap1count er-cloc kwise
and remo veit.
The coolan tle ve lis cor rect:
R Ifth eengine iscold, uptomar kerbar 2.
R Ifth eengine iswa rm,up to0.6 in(1.5 cm)
ov er mar kerbar 2. 0007
Ifnecessar y,add coolant that has been
appr ovedby Mer cedes-Ben z.
R Further information oncoolant :
(→ pag e42 1) Ad
ding washer fluid tothewindsh ield
wa sher system 000A
WARNIN GRisk ofburnsfrom hotcom‐
ponent partsintheengine compartmen t
Cer tain com pone ntpar tsintheengine com‐
par tmen tcan bevery hot,e.g. theengine,
th ecooler andpartsof theex haus tsy stem. 0007
Letth eengine cooldown and only
to uc hth ecom ponen tpar tsdescr ibed
as follo ws . 000A
WARNIN GDang erofburnswhen open‐
ing thehood
If yo uopen thehood when theengine has
ove rheat edordur ing afire intheengine
com partmen t,yo uco uld come intoco ntact
wit hho tga ses orother escaping operating
fl uids. 0007
Beforeopen ingthehood, allowthe
engine tocool down. 0007
Intheeve ntofafire intheengine com‐
par tmen t,ke ep thehood closed and
call thefire ser vice. 000A
WARNIN G‑Ri sk offire and injuryfrom
wind shieldwa sher concen trat e
Wi ndsh ield wa sher concen trat eis highl y
fl ammab le.Itcoul dign ite if it com esinto
con tact with hotengine component partsor
th eex haus tsy stem. 0007
Mak esur eth at no wind shieldwa sher
concen trat espills outnext to thefiller
open ing. Maint
enanceand care35
1

0007
Dis
pose ofbatter iesin an
en vironme ntally responsible manner.
Ta ke disc hargedbatt eries toaqu alif ied
spec ialistwo rkshop ortoacol lection
poin tfo rused batteries. If
yo uha ve todiscon nectth e12 Vbatt ery, con‐
ta ct aqu alif ied spec ialistwo rkshop.
Com plywit hsaf etyno tesand take protect ive
measur eswhen handling batteries. Risk
ofexplosion. Fir
e,open flames andsmokingar e
pr ohibi tedwhen handling thebatt ery.
Av oid creating sparks. Ele
ctroly teor batt eryacid iscor ro‐
siv e.Avoid cont actwithth eskin ,eye s
or clo thing. Wearsuit able protect ive
clo thing, inpar ticular glove s,an apr
onand afa ce mas k.Immedia tely
ri nse electr olyteor acid splashes off
wit hclean water.Con sult adoc torif
necessar y. We
arsaf etygl asses . Ke
ep childr enaway. Obser
vethis Opera tor's Manua l.
Obser vethefo llo wing ifyo udo notint endto use
th eve hicle overan extende dpe riod oftime:
R Activatest andb ymode .
R Alternat ivel y: con nectth ebatt eryto abat ‐
te ry charge rapp rove dby Mer cedes-Ben zor
consult aqu alif ied spec ialistwo rkshop to
discon nectth ebatt ery. No
teson star ting assistance andoncharg‐
ing the12 Vbatt ery Ve
hicl eswith alithium-ion battery
When chargin gth ebatt eryand during star tin g
assis tance, alwa ys use thejum p-start connec‐
tion pointintheengine compartmen t.
000E NO
TEDama getothebatt eryfrom over‐
vo ltag e When
chargin gusin gabat tery charge rwit h‐
out amaximu mchargin gvo ltag e, thebatt ery
or theon- boar delectr onics maybe damag ed. 0007
Onlyuse batterych arge rs wit hamax i‐
mum chargin gvo ltag eof 14.4 V. All
other vehicl es
When chargin gth ebatt eryand during star tin g
assis tance, alwa ys use thejum p-start connec‐
tion pointintheengine compartmen t. Br
eakdo wnassis tance 36
9