Cooling System; Cooling Fan, Hose And Connections - Subaru WRX-STI Owner's Manual

Cooling system

WARNING
. Never attempt to remove the
radiator cap until the engine has
been shut off and has cooled
down completely. Since the cool-
ant is under pressure, you may
suffer serious burns from a spray
of boiling hot coolant when the
cap is removed.
. Be careful of the rotating cooling
fan when the engine hood is
open. When the engine tempera-
ture is high, the cooling fan in the
engine compartment may oper-
ate when the ignition switch is
turned to the "ON" position, even
if the engine is stopped. Touch-
ing the cooling fan while it is
rotating may result in injury.
CAUTION
. The cooling system has been
filled at the factory with a high
quality, corrosion-inhibiting,
year-around coolant which pro-
vides protection against freezing
down to −368C (−338F). Make
sure to always use genuine
SUBARU Super Coolant or an
equivalent (non-amine type cool-
ant).
. If the coolant requires water dilu-
tion, be sure to use soft water (or
clear and drinkable water) and to
follow the required dilution ratio.
. Mixing with a different coolant
and/or hard water may result in
problems including, but not lim-
ited to, shortened engine compo-
nent life, cooling system clog-
ging, coolant leaks and engine
damage from overheating. There-
fore, never mix different kinds of
coolant and/or hard water even if
freezing temperatures are not
expected.
. Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
& Cooling fan, hose and con-
nections
Your vehicle employs an electric cooling
fan which is thermostatically controlled to
operate when the engine coolant reaches
a specific temperature.
Maintenance and service/Cooling system
If the radiator cooling fan does not operate
even when the engine coolant tempera-
ture gauge exceeds the normal operating
range, the cooling fan circuit may be
defective. Refer to Temperature gauge
F3-12.
Check the fuse and replace it if necessary.
Refer to Fuses F11-46 and Fuse panel
located in the engine compartment F12-
12.
If the fuse is not blown, we recommend
that you have the cooling system checked
by your SUBARU dealer.
If frequent addition of coolant is neces-
sary, there may be a leak in the engine
cooling system. It is recommended that
the cooling system and connections be
checked for leaks, damage, or looseness.
11-19
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