radiator cap MERCEDES-BENZ SL ROADSTER 2019 Owner's Manual

G
WARNING
If engine oilcomes intocontact withhot
components inthe engine compartment, it
may ignite. Thereisarisk offire and injury .
Make surethatengine oilisnot spilled next
to the filler neck. Letthe engine cooldown
and thoroug hlyclea nthe engine oiloff the
components beforestarting theengine. H
Envi
ronmental note
When addingoil,take carenottospil lany. If
oil enters thesoil orwate rways,itis harmfu l
to the environment.
! Use
only engine oilsand oilfilters thatare
app roved forvehicl eswith aservice system.
A list ofthe engine oilsand oilfilters that
have been tested andapproved inaccord-
ance withMercede s-BenzSpecifications for
Service Productsisava ilable atany author-
ized Mercede s-BenzCenter.
The followi ngcaus eengine failure ordam-
age tothe exhau stsystem:
R Use ofengine oilsand oilfilters thathave
not been express lyapp roved forthe ser-
vice system
R Rep lace ment ofengine oiland oilfilter
after thereplacement intervalspecified
by the service system hasexpire d
R Use ofengine oiladd itives
! Do
not add toomuch oil.If the oilleve lis
abo vethe "ma x"mark onthe dipstick, too
much oilhas been added. This canleadto
dama getothe engine orthe catal yticcon-
verter. Haveexcess oilsiph oned off. Example
:engine oilcap X
Turn cap0043counter-clockwi seand remove
it.
X Add engine oil.
If the oilleve lis at or bel ow the MIN mark
on the oildip stick, add1.1USqt(1.0 liter)
of engine oil.
X Rep lace cap0043onthe filler neck andturn
clockwis e.
Ensure thatthecap locks intoplace
secure ly.
X Che ckthe oilleve laga inwith theoildip stick
(Y pag e266) .
Further informati ononengine oil
(Y pag e323) . Che
ckin gand adding otherservice
products
Che ckin gco olan tlev el G
WARNING
Certa incomponents inthe engine compart-
ment, suchasthe engine, radiator andparts
of the exhau stsystem, canbecome very
hot. Working inthe engine compartment
poses arisk ofinjury .
Where possible,let the engine cooldown
and touch onlythecomponents describedin
the followi ng. G
WARNING
Opening thehood when theengine isover-
heate dor when thereisafire inthe engine
compartment couldexpose youtohot gase s
or other service products.There isarisk of
injury .
Let anoverhe atedengine cooldownbefore
openi ngthe hood. Ifthere isafire inthe
engine compartment, keepthehood closed
and contact thefire depa rtment. G
WARNING
The engine compartment containsmoving
components. Certaincomponents, suchas
the radiator fan,may continue torun orstart
aga insud denly whentheignitio nis off.
There isarisk ofinjury . Eng
inecompar tment
267Mainten anceandcare
Z

If
you need todo any work inside theengine
compartment:
R switch offthe ignition
R never reach intothearea where thereisa
risk ofdanger frommoving components,
such asthe fanrotation area
R remove jewelryandwatches
R keep items ofclothing andhair, forexam-
ple, awayfrom moving parts G
WARNING
The cooling systemispressu rized,particu-
larl ywhen themotor iswarm. Ifyou open
the cap, youcould bescalde difhot coolant
spray sout. There isarisk ofinjury.
Let the engine cooldown before youopen
the cap. Wear protective glovesandprotec-
tive eyew earwhen opening. Openthecap
slow lyto relea sepressu re. Example
X Park thevehicle onalevel surface.
Only check thecoolant levelwhen thevehi-
cle ison alevel surface andtheengine has
cooled down.
X Turn theSmartKey topositio n0048 inthe igni-
tion lock (Ypage 126).
On vehicle swith KEYLESS- GO,press the
Start/St opbutton twice(Ypage 126).
X Check thecoolant temperature gageinthe
multifu nctiondisplay.
The coolant temperature mustbebelow
158 ‡(70 †).
X Turn theSmartKey topositio n0092
(Y page 126)inthe ignition lock. X
Slowl yturn cap0044half aturn counter-clock-
wise toallow excess pressureto escape .
X Turn cap0044further <004600520058005100570048005500100046004F00520046004E005A004C0056
0048[ and
remove it.
If the coolant isat the level ofmarker bar
0087 inthe fillerneck when cold,there is
enough coolant incoolant expansion
tank 0043.
If the coolant levelisappro ximately 0.6in
(1.5 cm)above marker bar0087inthe filler
neck when warm, thereisenough coolant in
expansion tank0043.
X Ifnecessary ,add coolant thathasbeen tes-
ted and appro vedbyMercedes-Benz.
X Repl acecap 0044and turn itclockwise asfar
as itwil lgo.
Further information oncoolant (Ypage 324).
Windshie ldwashe rsystem G
WARNING
Certai ncomponents inthe engine compart-
ment, suchasthe engine, radiator andparts
of the exhau stsystem, canbecome very
hot. Working inthe engine compartment
poses arisk ofinjury.
Where possible,let the engine cooldown
and touch onlythecomponents describedin
the follow ing. G
WARNING
If you open thehood when thedrive system
has overhea tedorduri ngafire inthe engine
compartment, youcould come intocontact
with hotgases orother escapi ngopera ting
flui ds. There isarisk ofburns.
Let the overhea tedcomponents cooldown
before opening thehood. Inthe event ofa
fire inthe engine compartment, keepthe
hood closed andcallthefire service. G
WARNING
Windshi eldwash erconcentrate ishighl y
flamma ble.Ifwindshi eldwash erconcentrate
gets onto hotcomponents ofthe engine or
the exhau stsystem, itcan ignite. Thereisa
risk offire and injury. 268
Eng
inecompar tmentMaintenanc eand care