Page 386 of 497

Allow the engine to coo
lbefore opening the
cap .Wearg love sa nd protective eyewear
when opening. Slowl yturn the cap half aturn
to allo wpressure to escape. X
Park the vehicl eonalevel surface.
Onl ycheck the coolant level if the vehicl eis
on alevel surface and the engine has
coole ddown.
X Turn the key to position 2in the ignition
lock (Y page 179).
On vehicles with KEYLESS-GO ,press the
Start/Stop button twice (Y page 179).
X Check the coolant temperature display in
the instrument cluster.
The coolant temperature must be below
70 †.
X Turn the key to position 0in the ignition
lock (Y page 179).
X Slowl yturn cap :half aturn anti-clock-
wise to allo wexcess pressure to escape.
X Turn cap :furthe ranti-clockwise and
remove it.
If the coolant is at the level of marker bar =
in the fille rneck when cold, ther eisenough
coolant in coolant expansio ntank ;.
If the coolant level is approximatel y1.5 cm
above marker bar =in the fille rneck when
warm, ther eisenoughcoolant in coolant
expansio ntank ;.
X If necessary ,top up with coolant tha thas
been teste dand approved by Mercedes-
Benz.
X Replace cap :and turn it clockwise as far
as it will go. For furthe
rinformatio noncoolant, see
(Y page 479).
Topping up the windscreen washe rsys-
tem G
WARNING
Certai ncomponents in the engine compart-
ment could be ver yhot, e.g .the engine ,the
radiato rand parts of the exhaus tsystem.
There is ariskofi njury when accessing the
engine compartment.
As far as possible, allo wthe engine to cool
down and onl ytouch the components descri-
be dint he following. G
WARNING
If windscree nwashe rconcentrate come sinto
contact with hot components of the engine or
the exhaus tsystem ,itc an ignite .There is a
ris koff irea nd injury.
Make sure the windscree nwashe rc oncen-
trate does not come into contact with the filler neck. X
To open: pull cap:upwards by the tab.
X Top up with the premixe dwashe rfluid.
X To close: press cap :onto the fille rneck
unti lite ngages.
If the washe rfluid level drops belo wthe rec-
ommende dminimu mof1l itre, am essage
appear sinthe multifunctio ndisplay prompt-
ing yo utotop up the washe rfluid
(Y page 328). Engine compartment
383Maintenance and care Z
Page 476 of 497

X
Slide the right-hand front sea ttoits rear-
mos tposition.
X Fol dfloor covering :upwards.
VIN ;can be seen. Engine number
The engine number is stampe dinto the crank-
case. Yo ucan obtain further information from
any qualified specialist workshop. Servic
eproducts and capacities Important safety notes
G
WARNING
Service product can be poisonous and haz-
ardou stohealth. There is ariskofi njury.
Observe the instructions on the respective
original containe rwhenu sing ,storing and dis-
posing off service products. Alway sstore ser-
vice products in the seale doriginal container.
Alway skeep service products ou tofthe reach
of children. H
Environmental note
Dispose of service products in an environ-
mentally-responsible manner.
Service products includ ethe following:
R fuels
R exhaus tgas aftertreatment additives, e.g.
AdBlue ®
R lubricants (e.g. engine oil, transmissio noil)
R coolant
R brake fluid
R windscreen washe rfluid
R climate control system refrigerant
Components and service products mus tbe
matched .Only us eproducts recommended
by Mercedes-Benz. Damage which is caused
by the us eofproducts which have not been
recommended is not covered by the
Mercedes-Benz warranty or goodwil lges- tures. The
yare listed in this Mercedes-Benz
Owner's Manua linthe appropriate section.
Yo uc an identif yservice products approved
by Mercedes-Benz by the following inscrip-
tions on the container:
R MB-Freigab e(e.g. MB-Freigab e229.51)
R MB Approva l(e.g. MB Approva l229.51)
Othe rdesignations or recommendations indi-
cate alevel of quality or aspecification in
accordance with an MB Shee tNum ber(e.g.
MB 229.5) .The yh aven ot necessaril ybeen
approved by Mercedes-Benz.
Othe ride ntifications ,for example:
R 0W -30
R 5W -30
R 5W -40
Further information can be obtaine dfrom any
Mercedes-Benz Service Centre or on the
Interne tath ttp://bevo.mercedes-benz.com. Fuel
Important safety notes G
WARNING
Fue lish ighl yf lammable. If yo uhandlef uel
incorrectly, ther eisariskoff irea nd explo-
sion.
Yo um usta void fire, nake dflames ,creating
sparks and smoking. Switch off the engine
and ,ifa pplicable, the auxiliary heating before
refuelling. G
WARNING
Fuels are poisonous and hazardou stohealth.
There is adanger of injury.
Do not swallo wfuelorl etit come into contact
with skin, eyes or clothing .Donot inhale fuel
vapours. Kee pfuels ou tofthe reach of chil-
dren. Servic
eproducts and capacities
473Technical data
Z
Page 483 of 497

Further information on coolants can be
found in the Mercedes-Benz Specifications for Service Products, MB Specifications for Service Products 310.1, e.g. on the Inter-
net at http://bevo.mercedes-benz.com.
Or contact aquali fied specialist workshop.
! Alway
suseasuitabl ecoolant mixture,
eve ninc ountries where hig htemperatures
prevail.
Otherwise, the engine cooling system is not
sufficiently protected from corrosio nand
overheating.
i Have the coolant regularly replaced at a
qualified specialist worksho pand the
replacement confirmed in the Service
Booklet.
Compl ywitht he important safety precautions
for service products whe nhandling coolant
(Y page 473).
The coolant is amixture of water and anti-
freeze/corrosio ninhibitor. It is responsible
for the following:
R anti-corrosion protection
R antifreeze protection
R raising the boiling point
If antifreeze/corrosio ninhibitor is present in
the correct concentration, the boiling point of
the coolant during operation will be approx-
imately 130 †.
The antifreeze/corrosio ninhibitor concentra-
tion in the engine cooling system should:
R be at least 50% .Thisw illp rotect the engine
cooling system against freezing dow nto
approximately -37 †.
R not excee d55% (antifreeze protection
dow nto- 45 †). Hea twillo therwise not be
dissipated as effectively.
Mercedes-Benz recommends an antifreeze/
corrosio ninhibitor concentrate in accord-
ance with MB Specifications for Service Prod- ucts 310.1.
i Whe
nthe vehicle is firs tdelivered ,itisfil-
le dw ithac oolant mixture that ensures adequate antifreeze and corrosio
nprotec-
tion.
i The coolant is checke
datevery mainte-
nance interval at aquali fied specialist
workshop. Windscree
nwasher system
Important safety notes G
WARNING
If windscreen washe rconcentrate comes into
contact with hot components of the engine or
the exhaust system, it can ignite. There is a
ris koff ire and injury.
Make sur ethe windscreen washe rconcen-
trate doe snot come into contact with the filler
neck.
! Do not us
edistille dord e-ionised water in
the washe rfluid reservoir. Otherwise, the
level senso rmay be damaged.
! Only the washe
rfluid sSummerFit and
WinterFit can be mixed. Otherwise, the
spraying nozzles could become blocked.
Compl ywitht he important safety notes for
service products whe nhandling washe rfluid
(Y page 473).
At temperatures above freezing:
X Fil lthe washe rfluid reservoi rwitham ixture
of water and washe rfluid ,e.g. MB Sum-
merFit.
Mix 1partMBS ummerFit to 100 parts water.
At temperatures below freezing:
X Fil lthe washe rfluid reservoi rwitham ixture
of water and washe rfluid ,e.g. MB Winter-
Fit.
For the correct mixing rati orefe rtot he
information on the antifreeze reservoir.
i Add washe
rfluid concentrate, e.g. MB
SummerFit or MB WinterFit, to the washer
fluid al lyea rround. 480
Servic
eproducts and capacitiesTechnical data