Hyundai Yeni i20 2023 Owner's Manual page 576

Maintenance
Type A Type A
Type B Type B
WARNING
Do not remove a radiator cap/
engine coolant reservoir cap.
• Never attempt to remove the radia-
tor cap/engine coolant reservoir cap
while the engine is operating or hot.
• Doing so might lead to cooling system
failure and engine damage and could
result in serious personal injury from
escaping hot coolant or steam.
• Turn the engine off and wait until it
cools down. Use extreme care when
removing the radiator cap/engine
coolant reservoir cap. Wrap a thick
towel around it, and turn it counter-
clockwise slowly to the first stop. Step
back while the pressure is released
from the cooling system.
9-28
• 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.
• Even if the engine is not operating, do
not remove the radiator cap/engine
coolant reservoir cap or the drain plug
while the engine and radiator are hot.
Hot coolant and steam may still blow
out under pressure, causing serious
OBC3090006 OBC3090006 injury.
WARNING
OBC3090007 OBC3090007 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 temperature decreases,
the electric motor will automatically
shut off. This is a normal condition.
The electric motor (cooling fan) may
operate until you disconnect the nega-
tive battery cable.
The electric motor (cooling
fan) is controlled by engine
coolant temperature,
refrigerant pressure and
vehicle speed.