User Manual - Page 405

For 2016 KIA OPTIMA HYBRID.

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733
Maintenance
Checking the coolant level
NOTICE
The engine coolant and/or inverter
coolant level is influenced by hybrid
system temperature. Before filling
the engine coolant and/or inverter
coolant, turn the hybrid vehicle off,
fill the engine coolant and/or invert-
er coolant carefully.
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 cooling system.
When you are sure all the pressure
has been released, press down on
the cap, using a thick towel, and con-
tinue turning counterclockwise to
remove it.
WARNING
Radiator / Inverter
cap
Do not remove the radiator or
the inverter cap when the
engine is hot. Scalding hot
coolant and steam may blow
out under pressure.
WARNING
Cooling fan
Use caution when working near
the blade of the cooling fan.The
electric motor (cooling fan) is
controlled by engine coolant
temperature, refrigerant pres-
sure and vehicle speed. It will
sometimes operate when the
engine is not running.
CAUTION - Radiator /
Inverter cap
Never attempt to remove the
radiator or inverter cap while
the engine is operating or hot.
Doing so might lead to cooling
system and engine damage.
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