2023 MERCEDES-BENZ GLC COUPE engine overheat

&
W W
ARNI NG ARNI
NGRisk ofskiddi ngand ofan acci-
dent duetoshiTing down onslippe ryroad
sur faces
If yo ushiT down onslipper yro ad sur faces to
incr ease theengine braking e.ect,th edr ive
wheels maylose traction. #
DonotshiT down onslipper yro ad sur fa-
ces toincr ease theengine braking
e.ect . &
D D
AN AN
GER GER
Riskoffata linjur ydue topoison-
ous exhaus tga ses
If th eta ilpipe isbloc kedor su1cient ventila -
tion isno tpos sible, poi sono usexhaus tga ses
suc has carbon monoxidemayent ertheve hi-
cle. This isthecase, forex am ple, ifth eve hicle
get sst uc kin thesno w. #
Keep theta ilpipe andthear ea around
th eve hicle free from snowwhen the
engine orthestationar yheat erisrun-
ning. #
Ope nawind owontheside oftheve hicle
fa cing awayfrom thewind toensur ean
adeq uatesuppl yof fresh air. &
W W
ARNIN G ARNIN
GRisk ofaccident andinjur ydue
to being under thein0 uence ofalcohol
and drugs while driving
Dr inking anddriving and/or taking drugs and
dr ivi ng areve ry dang erous combinations. Even
a small amount ofalcohol ordrugs can a.ect
yo ur re0e xes, per cep tion sand judgmen t.
The possibi lityof aser ious oreven fata lacci-
dent aregr eatl yincr eased whenyoudr ink or
ta ke drugs and drive. #
Donotdr ink ortake drugs and drive or
allo wan yone todrive who hasbeen
dr inking ortaking drugs. &
W W
AR NIN G AR
NIN GRisk ofacciden tdue tothe
br ak esy stem overheating
If yo ulea veyour foot on thebr ak epedal when
dr iving, thebr ak esy stem mayove rheat. This
increases thebr aking distance andthe
br ak esy stem can even fail. #
Neveruse thebr ak epedal asafo ot re st. #
Donotde pres sth ebr ak epedal andthe
acceler ator pedal atthesame timewhile
dr iving. *
N NO O
TE TE
Engine damagedue toexcessiv ely
high enginespeeds The
enginewill bedamag edifyo udr ive wit h
th eengine intheove rrev ving rang e. #
Donotdr ive wit hth eengine intheove r-
re vving rang e. *
N NO O
TE TE
We aring out thebr ak elining sby
cont inuousl ydepr essing thebr ak epedal #
Donotdepr essthebr ak epedal continu-
ousl ywhilst driving. #
Touse thebr aking e.ect oftheengine,
shiT toalowe rge ar ingood time. Dr
iving and parking
141 141

fo
ot from theacceler ator pedal aTerovertaking ,
cr uise controlwill resume speed regula tion atthe
st or ed spee d.
Yo ucan setan yspeed from 15mph(2 0km /h)up
to themaximum designspeed.
Obser vetheno teson drivi ng systems andyour
re sponsi bility;yo uma yot her wise failto recogn ize
dang ers(/ page162) .
Mer Mer
cedes‑ cedes‑
AMGv AM
Gvehicles: ehicles:
cruise controlis availa-
ble uptoamaximum speedof155 mph
(250 km/h ).
Displa y Displa
ys on t s
on the ins he
instr tr
ument display ument
display
R h (gra y): cruise control issele cted but not
ye tacti vated.
R h (gre en): cruise contr olisactiv e.
A stor ed speed appear salongside theh dis-
pla y.
% The segm entsfrom thecur rent stor ed spe ed
to theend ofthesegment displaylight upon
th espeedome ter. Sy
st Sy
stem limits em
limits
Cr uis eco ntrol maybe una ble to maint ainthe
st or ed spee don uphillgr adien ts.The stor ed
speed isresumed whenthegr adien tev ens out.
Chang eint oalowe rge ar ingood timeonlongand
st eep downhil lgr adien ts.Take par ticular note of
th is when driving aladen vehicle. Bydoin gso, you
will mak euse oftheengine' sbr aking e.ect.This
re lie vesth eload onthebr ak esy stem and pre-
ve nts thebr ak es from overheating andwearing
to oqu ickl y.
Do notuse cruise contr olinthefo llo wing situa-
tions:
R Intra1c situations that requ ire freq uent
ch ang esofspeed, e.g.in hea vytra1c, on
wind ingroads
R Onslipp eryro ads. Acceler atingcan cause the
dr iven wheels tolose traction andtheve hicle
could then skid.
R When visibility ispoor Oper Oper
ating cr ating
cruise contr uise
contr ol ol
&
W W
ARNIN G ARNIN
GRisk ofaccident duetostor ed
sp ee d
If yo ucall upthestor ed speed andthis is
lo we rth an your cur rent spe ed, theve hicle
decel erates. #
Take intoaccount thetra1c situation
bef orecalling upthestor ed speed. RR
eq eq
uir uir
ements ements
R ESP ®
is activ ated, but must notint erve ne.
R The vehicle speed isat leas t15 mph
(20 km/h ).
R The transm issionis in posi tion005B. Dr
ivin g and parking
171 171

#
Allo wtheengine tocool down before
addin ganti freeze . #
Mak esur eth at no ant ifre eze spills out
ne xt to the/ller opening. #
Thor oughl yclean o.anyantifr eeze from
com ponent partsbef orestar ting the
ve hicle. *
N NO O
TE TE
Damag ecaused byincor rect cool-
ant #
Onlyuse coolant that has been premix ed
wit hth ere qu ired antifr eeze protection.
Inf ormation oncoolant isavailabl eat thefo l-
lo wing locations:
R IntheMer cedes-Benz Speci/cation for
Oper ating Fluids 320.1
- Athttp s://be vo.mer cede s-benz.c om
- IntheMer cedes-Benz BeVoapp
R Ataqu ali/ed special istwo rkshop *
N NO O
TE TE
Overheati ngathigh outsi detemp er-
atur es If
an inappr opriatecoolant isused, thecooling
sy stem isno tsu1cien tly pr otect edagainst
ov erheating andcorrosion athigh outsi de
te mp eratur es. #
Onlyuse coolant approvedfo r
Mer cedes-Be nz. #
Obs erve theinst ruction sin the
Mer cedes-Be nzSpeci /cation sfo rOper -
ating Fluids 320.1. Ha
ve thecoolant regula rly re placed ataqua li/ed
specialist workshop.
Pr opor tionofant ifre eze concentr atein thecool-
ing system:
R Aminimum of50% (antifr eezeprotection down
to about -35°F(-37 °C))
R Amaximum of55% (antifre eze protection
do wn to-49°F (-45°C)) Cool
ant Cool
ant/lling /ll
ing q q
uantity uantity
Engine cooling cir Engine
cooling circuit cuit
(/llin g (/
llin gcap acitywit cap
acitywit hhea t- h
hea t-
ing) ing)
ModelModel
Capacity Cap
acity
GL C300 4MATIC 13.7USqt
(13.0 liter s) NNo o
t t
es on winds hieldw es
on winds hieldwas her as
her 0uid 0ui
d Obs
erve theno teson oper ating0uids
(/ page342). &
W W
AR NIN G AR
NIN G‑Risk of/reand injuryfrom
wind shield washer conce ntrate
Wi ndsh ieldwasher conce ntrate ishighl y0am-
mable. Itcould igniteif it comes intocont act
wit hho tengine component partsor the
ex haus tsy stem. #
Mak esur eth at no wind shield washer
conce ntrate spill sout next to the/ller
opening. Te
ch nica ldat a
347 347

Engi
ne Engi
ne WW
ar ar
nin g/i ndicat nin
g/i ndicat orlam pP or
lam pP ossiblecauses/conseq ossible
causes/conseq uencesand uences
and0050 0050
Solut ions Solut
ions
ÿ
Coolant warning lamp *T
he redcoolant warning lampis lit while theengine isrunning.
Po ssible causes:
R The temp eratur esensor ismalfunctionin g
R The coolant leve lis toolow
R The airsuppl yto thera diat orisobstr ucted
R The radiat orfan is faulty
R The coolant pumpis faulty
If th er eis an additional warning tone, thecoolant temp eratur ehas exceeded themaximum permissible temp eratur e. &
W W
ARNIN G ARNIN
GRisk ofbur nswhen opening thehood
If yo uopen thehood intheev ent ofan overheat edengine or/rein theengine compartment, thefo llo wing situations
ma yoccur :
R Youma ycome intocont actwithho tga ses.
R Youma ycome intocont actwithot her escapin gho toper ating0uids. #
Beforeopen ingthehood, allowtheengine tocool down. #
Intheev ent ofa/r ein theengine compartment, keep thehood closed andcallthe/r eser vice. #
Stop immediat elyin accor dance withth etra1c conditions andswitc ho. theve hicle. Donotcont inuedr ivi ng . 406406
Displ
aymessag esand warning/in dicatorlam ps