2019 MERCEDES-BENZ G-CLASS engine coolant

#
Turn cap 1cou nter-cloc kwiseand remo ve
it. #
Addengin eoil. #
Replace cap1and turnit cloc kwise asfar
as itwill go. #
Chec kth eoil leve lag ain (/ page339 ). Chec
kingcoolant leve l &
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 ibedinthe
fo llo wing. &
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 belo w
15 8°F (70 °C). #
Slowly turncap 1count er-cloc kwise to
re lease overpressur e. Maint
enance andcare34
1

#
Con tinue turnin gcap 1count er-cloc kwis e
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 #
Ifnecessar y,add coolant that has been
appr ovedby Mer cedes-Ben z.
R Further information oncoolant
(/ page40 7). 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, the
ra diat orand partsof theex haus tsy stem. #
Allo wtheengine tocool down and only
to uc hco mp onent partsdescr ibedinthe
fo llo wing. &
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. #
Beforeopen ingthehood, allowthe
engine tocool down. #
Intheeve ntofafire intheengine com‐
par tmen t,ke ep thehood closed and
call thefire ser vice. &
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. #
Mak esur eth at no wind shieldwa sher
concen trat espills outnext to thefiller
open ing. #
Turn cap 1cou nter-cloc kwiseand remo ve
it. #
Addwa sher fluid. #
Replace cap1and turnit cloc kwise asfar
as itwill go. 34
2
Maint enance andcare

R
ataqu alif ied spec ialistwo rkshop Cool
ant No
teson coolant
Obser vetheno teson oper ating fluids
(/ page40 2). &
WARNIN G‑Ri sk offire and injuryfrom
ant ifreez e
If ant ifreez ecom esintocon tact with hot
com ponent partsintheengine compart‐
ment ,it ma yignit e. #
Allo wtheengine tocool down before
ad ding anti freeze . #
Makesur eth at no ant ifreez espills out
ne xt to thefiller open ing. #
Thor oughl yclean offan yant ifreeze
fr om com pone ntpar tsbef orest ar tin g
th eve hicle. *
NO
TEDama gecau sed byinc orrect cool ‐
ant #
Onlyad dcool antthat has been pre‐
mix edwithth ere qu ired ant ifreeze pro‐
te ction.
Inf ormati ononcool antisavailable atthefo l‐
lo wing locations:
R IntheMer cedes- BenzSpecif ication for
Oper ating Fluids 310.1
- Athttp: //be vo.mer cedes-b enz.com
- IntheMer cedes- BenzBeVoapp
R Ataqu alif ied spec ialistwo rkshop *
NO
TEOverhea ting athigh outsid ete m‐
per atur es If
an inapp ropr iat ecoolant isused, the
engine cooling system isno tsuf ficie ntlypr o‐
te cted agains tov erheating andcorrosion at
high outside temp eratur es. #
Alw aysuse coolant approvedby
Mer cedes-Ben z. #
Obser vetheins truction sin the
Mer cedes-Ben zSpecif ications forOper‐
ating Fluids310.1. Ha
ve thecoolant regular lyreplaced ataqu alif ied
spec ialistwo rkshop.
The propor tionofcor rosion inhibit or/antifr eeze
concen trat ein theengine cooling system should
be:
R aminimum of50% (antifr eezeprotect ion
do wn toappr oximat ely-3 5°F (-37°C))
R amaxim umof55% (antifreeze protect ion
do wn to-49 °F(-45 °C))
Co olant capacity
Capa city Mode
lC apacity
G 550 14.9 US qt(14.1 l) No
teson windshield washer fluid Obser
vetheno teson oper ating fluids
(/ page40 2). Te
ch nica lda ta 40
7

Engine
Displa
ymes sages
Possible causes/conseq uencesand0050 0050
Solutions
003D See Operator' sManual *T
hebatt eryis no tbeing charge d.
* NO
TEPossible engine damageif yo uco ntinue drivin g #
Donotco ntinue drivin gund eranycir cum stanc es. #
Con sult aqu alif ied spec ialistwo rkshop. #
Pull overand stop theve hicle safely and switc hof fth eengine, paying attent ion toroad and traffic condi tions. #
Consul ta qu alif ied spec ialistwo rkshop.
003D Stop Vehicle LeaveEngine
Running *T
hebatt erych arge leve lis toolow. #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions.Do not
continu edr ivi ng und eranycir cums tances. #
Lea vetheengine running . #
Waitunt ilth edispla ymessag edisappear sbef orepulling away.
Chec kCoolan tLev elSee
Oper ator'sMan ual *T
hecoolant leve lis toolow.
* NO
TEEngi nedama gedue toinsuf ficie ntcool ant #
Avoid long journeys wit hins ufficie ntcool ant. #
Addcoolant (/page34 1). 43
4
Displa ymessag esand warning/ indic ator lam ps

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
003D 12 VBatt erySee Opera-
tor's Manual *T
heengine isoffand thebatt erych arge leve lis toolow. #
Swi tchof fel ectr icalconsu mersth at areno tre qu ired. #
Lea vetheengine running fora fe w min utes, ordrive fo ra long erdis tance.
The batter ywi llch arge .
003D Stop VehicleSee Opera-
tor's Manua l *T
hebatt eryis no long erbeing charge dand thebatt erych arge leve lis toolow.
* NO
TEPossible engine damageif yo uco ntinue drivin g #
Donotco ntinue drivin gund eranycir cum stanc es. #
Con sult aqu alif ied spec ialistwo rkshop. #
Pull overand stop theve hicle safely assoon aspossible, paying attention toroad and traf fic condi tions.Do not
continu edr ivi ng und eranycir cums tances. #
Swi tchof fth eengine. #
Consult aqu alif ied spec ialistwo rkshop.
00AC *T
hefanmo toris def ectiv e. #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at
th ecoolant temp eratur edispla yre mains belowthere dmar king. Displa
ymessag esand warning/ indic ator lam ps 435

Disp
laymes sages
Possible causes/conseq uencesand0050 0050
Solutions
00AC Coolant TooHotStop Vehi-
cle Turn Engine Off *T
hecoolant istooho t. #
Pull overand stop theve hicle safely and switc hof fth eengine, paying attent ion toroad and traffic condi tions. &
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 tobs truct ed. #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at
th ecoolant temp eratur edispla yre mains belowthere dmar king.
00B6
Gas Cap Loose *T
her ehas been pressur eloss inthefuel system. Thefuel filler cap isno tclos edcor rectl yor thefuel system is
leaking. #
Close thefuel filler cap. #
Ifth efuel filler cap wasalr eady proper lyclosed :con sult aqu alif ied spec ialistwo rkshop. 436
Displa ymessag esand warning/ indic ator lam ps

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
00B6 Fu elreser vewarning lam p The
yello wfuel reser vewarning lam pis lit while theengine isrunning .
The fuelsu pp lyha sdr op pedint oth ere ser verang e. #
Refuel .
00AC
Coo lant warning lam p The
redcoolant warning lam pis lit while theengine isrunning .
Po ssible causes are:
R The temp eratur esensor ismalfunct ioning
R The coolant leve lis toolow
R The airsuppl yto thera diat orisobs truct ed
R The radiat orfanis faulty
If th er eis an additional warning tone, thecoolant temp eratur ehas exceed edthemaximum permissible temp eratur e. &
WARNIN GDang erofburnswhen opening thehood
If yo uopen thehood when theengine hasoverheat edordur ing afire intheengine compartmen t,yo uco uld come
int oco 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. 468
Displa ymessag esand warning/ indic ator lam ps

Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions #
Pull overand stop theve hicle safely and switc hof fth eengine, paying attent ion toroad and traffic condi tions.Do
no tcontinu edr ivi ng und eranycir cums tances. #
Obs erve themessag eson themultifunc tiondispla y.
If th ecoolant temp eratur edispla yis at thelowe rend ofthete mp eratur escale: #
Consult aqu alif ied spec ialistwo rkshop.
or #
Exit theve hicle andkeep asaf edis tance from itunti lth eengine hascooled down. #
Chec kth ecoolant leve l(/ page34 1). #
Mak esur eth at theair supply tothera diat orisno tobs truct ed. #
Avoiding highloads ontheengine, drive to thenear estqu alif ied spec ialistwo rkshop. Indoing so,ensur eth at the
cool anttemp eratur edispla yre mains belowthere dar ea. Ti
re s Wa
rning/indicat orlam p
Possible causes/conseq uencesand0050 0050
Solutions
0077 The
yello wtirepr essur emon itor ing system warning lam p(pr essur eloss/ malfun ction) islit.
The tirepr essur emon itor ing system has detected tirepr ess urelos sin at leas tone ofthetir es. Displa
ymessag esand warning/ indic ator lam ps 469