Kia Optima Hybrid 2017 Owner's Manual page 580

(Continued)
Use extreme caution when working
near the blades of the cooling fan so
that you are not injured by a rotat‐
ing fan blades. As the engine coolant
temperature decreases, the electric
motor 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.
Engine coolant
OJF075006
Check the condition and connections of
all cooling system hoses and heater ho‐
ses. Replace any swollen or deteriora‐
ted hoses.
The coolant level should be filled be‐
tween F (Full) and L (Low) marks on the
side of the coolant reservoir when the
engine is cool.
If the coolant level is low, add enough
specified coolant to provide protection
against freezing and corrosion. Bring
the level to F (Full), but do not overfill.
If frequent additions are required, we
recommend that the system be inspec‐
ted by an authorized Kia dealer.
Inverter coolant
Check the condition and connections of
all cooling system hoses. Replace any
swollen or deteriorated hoses.
The coolant level should be filled be‐
tween MAX and MIN marks on the side
of the coolant reservoir when the en‐
gine is cool.
If the coolant level is low, add enough
specified coolant to provide protection
against freezing and corrosion. Bring
the level to MAX, but do not overfill. If
frequent additions are required, we rec‐
ommend that the system be inspected
by an authorized Kia dealer.
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