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Kia Optima 2017 - Engine Coolant; Checking the Coolant Level

Kia Optima 2017
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ENGINE COOLANT
The high-pressure cooling system has
a reservoir filled with year round anti‐
freeze coolant. The reservoir is filled at
the factory.
Check the antifreeze protection and
coolant level at least once a year, at the
beginning of the winter season, and be‐
fore traveling to a colder climate.
CAUTION
When the engine overheats from
low engine coolant, suddenly add
ing engine coolant may cause
cracks in the engine. To prevent
damage, add engine coolant slowly
in small quantities.
Do not drive with no engine cool
ant. It may cause water pump fail
ure and engine seizure, etc.
Checking the coolant level
WARNING
Removing radiator cap
Never attempt to remove the radi
ator cap while the engine is oper
ating or hot. Doing so might lead
to cooling system and engine dam
age. Also, hot coolant or steam
could cause serious personal in
jury.
Turn the engine off and wait until
it cools down. Use extreme care
when removing the radiator cap.
Wrap a thick towel around it, and
turn it counterclockwise slowly to
the first stop. Step back while the
pressure is released from the cool
ing system.
When you are sure all the pressure
has been released, press down on
the cap, using a thick towel, and
continue turning counterclockwise
to remove it.
(Continued)
(Continued)
Even if the engine is not operating,
do not remove the radiator cap or
the drain plug while the engine and
radiator are hot. Hot coolant and
steam may still blow out under
pressure, causing serious injury.
WARNING
The electric motor (cool‐
ing fan) is controlled by
engine coolant tempera‐
ture, refrigerant pressure
and vehicle speed.
It may sometimes operate even
when the engine is not running. Use
extreme caution when working near
the blades of the cooling fan so that
you are not injured by a rotating fan
blades. As the engine coolant tem‐
perature decreases, the electric mo‐
tor will automatically shut off. This
is a normal condition.
If your vehicle is equipped with GDI,
the electric motor (cooling fan) may
operate until you disconnect the
negative battery cable.
8-49
8
Maintenance

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