Engine Coolant; Checking The Coolant Level - Hyundai Tucson 2023 Owner's Manual

ENGINE COOLANT

The high-pressure cooling system has a
reservoir filled with year-round antifreeze
coolant.
Check the antifreeze protection and
coolant level at least once a year, before
the winter season or before traveling to a
colder climate.

Checking the Coolant Level

Smartstream G2.5 GDI
Check the condition and connections
of all cooling system hoses and
heater hoses. Replace any swollen or
deteriorated hoses.
The coolant level should be filled
between the MAX and the MIN marks on
the side of the coolant reservoir when
the engine is cool.
If the coolant level is low, add enough
distilled (deionized) water mixed with
antifreeze to bring the level to the MAX
mark. If frequent additions are required,
contact an authorized HYUNDAI dealer.
Turn the vehicle off and wait until the
engine cools down. Use extreme care
when removing the engine 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.
ONX4E090049
The coolant level is influenced by the
engine temperature. Before checking or
refilling the coolant, turn off the engine
and allow the engine to cool.
Keep hands, clothing, and tools away
from the rotating fan blades of the
cooling fan.
Always turn off the vehicle unless the
vehicle has to be inspected with the
engine on. The cooling fan may operate
automatically if the negative (-) battery
terminal is not disconnected.
WARNING
Never remove the engine
coolant cap or the drain plug
while the engine and radiator
are hot. Hot coolant and steam
may blow out under pressure,
causing serious injury.
Information
WARNING
09
9-5