openthec ap, youc ould be scalded byhot
coolant spr aying out.
#Le tthe mo torc ool down befor eopening
th ec ap.
#When opening thec ap, wearglove sand
pr otectiv eeyewe ar.
#Slowl yturnt he cap half aturntoa llow
pressur etoescape.
#Park thev ehicle on aflat sur face.
#Chec kthe coolant temp eratur edispla yint he
instrument clus ter.
The coolant temp eratur emustbeb elow
15 8°F( 70 °C).
#Slowly tur ncap 1 counter-clockwise to
re lie ve ove rpressure.
#Continue turning cap 1counter-clockwise
and remo veit.
The coolan tleve lisc orrect:
RIfth ee ngine is cold, up tomar kerb ar2
RIfth ee ngine is warm,upt o0.6 in (1.5 cm)
ove rmarke rb ar2
#If necessar y,add coolant that has been tes‐
te da nd appr ovedbyM ercedes-Benz.
RFurther information on coolant (→pag e347)
Re filling thew indshield washer sy stem
&
WARNING Risk of burn sfromh otcom‐
ponent parts in thee ngine compartment
Cer tain component parts in thee ngine com‐
partmen tcan be very hot, e.g. thee ngine,
th ec ooler and parts of thee xhaust system.
#Le tthe engine cool down and only
to uc ht he component parts described
as follo ws .
&
WARNING ‑Riskoff irea nd injur yfrom
windshield washer concentrate
Wi ndshield washer concentrat eishighly
fl ammable. It coul dignit eifitc omes into
con tact wi thhote ngine component parts or
th ee xhaust system.
#Mak esuret hat no windshield washer
concentrat espills out next tothef iller
opening.
Maintenance and care 283
