Warning/
indic ator
lamp 00510051
Sign altype
Poss iblecause s/cons equen cesand 0050 0050
Sol utions 00AC
0051
The redcoola ntwar ning lamp comes onwhi lethe engine isrunning.
The coola ntleve lis too low.
If the coola ntleve lis correct, theairfl owtothe engine radiator may beblocked or
the electric engineradiator fanmay bedefective .
The coola ntistoo hotand theengine isno longer being coole dsuffi ciently .
X Observe theadditiona ldisp laymessa gesinthe multi function display.
X Pul lover andstop thevehicl esafel yand switch offthe engine, paying attention
to road andtraffic conditions.
X Secure thevehicl eaga inst rolling awa y(Y pag e142).
X Leave thevehicl eand keep asafe dista ncefrom thevehicl euntil theengine has
coole ddow n.
X Che ckthe coola ntleve land add coola nt,obser vingthewarni ngnotes
(Y pag e263).
X Ifyou have toadd coola ntfrequ ently, havetheengine coolingsystem checked.
X Make surethattheairsup plytothe engine radiator isnot blocked ,e.g. bysnow,
slu sh orice.
X Do not start theengine againuntil thecoola nttempera tureisbel ow 248 ‡
(120 †).Otherwi se,the engine couldbe dama ged.
X Drive tothe neares tqua lified speci alist worksho p.
X Avoid heavyloa dson the engine asyou doso, e.g. drivi nginmountai nousterrain
and stop-and-go traffic. 00AC
0051
The redcoola ntwar ning lamp comes onwhi lethe engine isrunning. Awarni ng
tone alsosound s.
The coola nttempera turehasexceede d248 ‡(120 †).The airflow tothe engine
radi ator may beblocked orthe coola ntleve lmay betoo low.
G WARNING
The engine isnot being coole dsuffi ciently andmay bedama ged.
Do not drive whenyou rengine isoverhe ated.Thiscancausesome fluids which
may have leaked into theengine compartment tocatch fire.
Steam fromtheoverhe atedengine canalso cau seseri ous burns whichcan occur
just byopeni ngthe hood .
There isarisk ofinjury .
X Obse rvethe additiona ldisp laymessa gesinthe multifunction displa y.
X Pul lover andstop thevehi clesafe lyand switch offthe engine, paying attention
to road andtraffic conditio ns.
X Secure thevehi cleaga inst rolling away (Y pag e142) .
X Leav ethe vehi cleand keep asafe dista ncefrom thevehi cleuntil theengine has
coole ddow n.
X Che ckthe coola ntleve land add coola nt,obse rving thewarning notes
(Y pag e263) .
X Ifyou have toadd coola ntfrequ ently, havetheengine coolingsys tem checked.
X Make surethattheairsup plytothe engine radiator isnot blocked, e.g.bysnow,
slu sh orice. 228
Warning
andindicator lamps inthe instrum entclusterOn-b oard comput erand displays
Exam
ple: eng ineoilcap
X Tu rn cap 0043cou nter-c lockwi seand remove it.
X Add engineoil.
If the oille vel isat or below the MIN markon
the oildi ps tick, add1.1 USqt(1.0 liter) of
eng ineoil.
X Re place cap 0043onthe fillerneck andturn
clo ckwi se.
Ensu retha tthe cap locks into place securely.
X Ch eck theoille vel again wi th the oildi ps tick
(Y page 261 ).
Fur therinfo rma tionon eng ineoil(Y page 322 ). Ch
eckin gand addi ngoth erservi ce
produ cts
Ch eckin gco olant leve l G
WA
RNING
The cooling system ispre ssu rize d,pa rtic ular ly
wh en the moto ris wa rm. Ifyo uop en the cap,
yo ucou ldbe sca lded ifhot coolant sprays out.
The reisaris kof inju ry.
Let the enginecoo ldo wn befor eyo uop en the
cap .We arpro tecti veglove sand protecti ve
ey ew earwh en openi ng. Open the cap slow ly
to release pre ssu re.
! The
coolant level mustonl ybe che cked and
corr ecte dwh en the enginehascoo led do wn
(co olant temp eratureund er104 ‡(40 †).
Ch ecki ngthe coolant level when the coolant
temp eratureis ove r104 ‡(40 †) can leadto
dama getothe engine orthe engine cooling
sys tem. X
Park thevehi cleonaleve lsurfa ce.
Only check thecoola ntleve lwhe nthe vehi cle
is on aleve lsurfa ceand theengine hascoole d
dow n.
X Turn theSmartKey toposi tion 0048inthe igni-
tion lock (Ypag e123).
X Che ckthe coola nttempera turedisplayin the
instrume ntclus ter.
The coola nttempera turemust bebelow
104 ‡(40 †).
X Turn theSmartKey toposi tion 005A
(Y pag e123) inthe igniti onlock .
X Slow lyturn cap0043counter-clo ckwiseandto
reli eve excess pressure.
X Turn cap0043further counter-clo ckwiseand
remove it.
If the coola ntisat the leve lof marker bar0087
in the filler neck whencold, there isenoug h
coola ntincoola ntexpa nsion tank0044.
X Ifnecessa ry,add coola ntthat hasbeentested
and approved byMerced es-Benz.
X Rep lace cap 0043and turn itclockwi seasfar as
it wil lgo.
For further informa tiononcoola nt,see
(Y pag e323) .
Windshi eldwashe rsyste m G
WARNING
Certa incomponents inthe engine compart-
ment, suchasthe engine, radiator andparts
of the exhau stsys tem, canbecome veryhot.
Working inthe engine compartment posesa
risk ofinjury .
Where possible,let the engine cooldownand
touch onlythecomponents describedinthe
foll owi ng. Eng
inecompar tment
263Maintenanceand care Z
