Hyundai Sonata Hybrid 2017, Owner'S Manual

Page: 471 / 552

7-20
Maintenance
E EN NG GIIN NE E C CO OO OL LA AN NT T/ /IIN NV VE ER RT TE ER R C CO OO OL LA AN NT T
The high-pressure cooling system
has a reservoir filled with year-round
antifreeze 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 before traveling to a colder cli-
mate. Checking the coolant level
Never remove the
radiator cap and/or
inverter coolant cap or
the drain plug while
the engine and radia-
tor are hot. Hot coolant and
steam may blow out under pres-
sure, causing serious injury.
Turn the hybrid system off and
wait until the engine cools down.
Use extreme care when remov-
ing the radiator cap and/or
inverter coolant 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 continue
turning counterclockwise to
remove it.
WARNING
OLFH077005
OLFH074006
■
Radiator cap
■
Inverter coolant cap