2022 HYUNDAI SANTA FE HYBRID radiator cap

05
5-59
Fuel Filler Door
Opening the fuel filler door
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1. Turn the engine off.
2. Ensure driver’s door is unlocked.
3. Press the rear center edge of the fuel filler door.
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4. Pull the fuel filler door (1) outward to access the fuel tank cap.
5. To remove the fuel tank cap (2), turn it counterclockwise. You may hear a
hissing noise as the pressure inside
the tank equalizes.
6. Place the cap on the fuel filler door.
Information
The fuel filler door will unlock when
driver’s door is unlocked.
To unlock fuel filler door:
[ Press the unlock button on your smart key

[ Press the central door unlock button on
armrest trim of driver’s door
The fuel filler door will lock when driver’s
door is locked.
To lock fuel filler door:
[ Press the lock button on your smart key

[ Press the Central Door lock button on
armrest trim of driver’s door

à All doors will automatically lock after the vehicle speed exceeds 9 mph.
Fuel filler door is also locked when vehicle speed exceeds 9 mph.
Information
If the fuel filler door does not open
because ice has formed around it, tap
lightly or push on the door to break the
ice and release the door. Do not pry on the
door. If necessary, spray around the door
with an approved deicer fluid (do not use
radiator antifreeze) or move the vehicle to a warm place and allow the ice to melt.

05
5-63
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6. Pull the fuel filler door (1) out to fully open.
7. To remove the fuel tank cap (2), turn it counterclockwise. You may hear a
hissing noise as the pressure inside
the tank equalizes.
8. Place the cap on the fuel filler door.
NOTICE

[ It may take up to 20 seconds to
unlock fuel filler door.

[ If the fuel filler door does not open
because ice has formed around it,
tap lightly or push on the door to
break the ice and release the door.

[ Do not pry on the door. If necessary,
spray around the door with an
approved de-icer fluid (do not use
radiator anti-freeze) or move the
vehicle to a warm place and allow
the ice to melt.
WARNING

[ Before refueling, be sure to check
what type of fuel is used for your
vehicle. If you put diesel fuel into
a gasoline-powered vehicle or
gasoline into a diesel-powered
vehicle, it may affect the fuel system
and cause serious damage to the
vehicle.

[ Add fuel into the fuel tank within
20 minutes after opening the fuel
filler door. After 20 minutes, the fuel
tank may shut off, causing fuel to
overflow. In this case, re-press the
fuel filler door opening button.

[ Do not leave the fuel filler door
opened for an extended period of
time. It may discharge the battery.

[ Close the fuel filler door after fueling
the vehicle. If you start the vehicle with the fuel filler door opened,
the message, “Check fuel door”,
illuminates on the LCD display.

[ Avoid refueling the vehicle while
charging the (high-voltage) hybrid
battery. It may cause a fire or an
explosion due to static electricity.
Closing the fuel filler door
1. To install the fuel tank cap, turn it clockwise until it “clicks” one time.
2. Close the fuel filler door and press the rear center edge of fuel filler door.
3. When the fuel filler door is closed well, it will lock in 5 seconds.

à If the fuel door is opened again as soon as it is closed, the fuel door will
not lock. Then, close the fuel door well again and it will lock in 5 seconds.

Emergency Situations
8-8
WARNING
Never remove the engine
coolant cap and/or inverter
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.
Turn the hybrid system off and wait until
the engine cools down. Use extreme
care when removing the engine coolant
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.
7. If you cannot find the cause of the overheating, wait until the engine
temperature has returned to normal.
Then, if coolant has been lost,
carefully add coolant to the reservoir
to bring the fluid level in the reservoir
up to the halfway mark.
8. Proceed with caution, keeping alert for further signs of overheating.
If overheating happens again,
we recommend that you call an
authorized HYUNDAI dealer for
assistance.
CAUTION

[ Serious loss of coolant indicates a
leak in the cooling system and we
recommend the system be checked
by an authorized HYUNDAI dealer.

[ When the engine overheats from
low engine coolant, suddenly adding
engine coolant may cause cracks
in the engine. To prevent damage,
add engine coolant slowly in small quantities.

[ When adding the inverter coolant,
we recommend that the vehicle
should only be serviced by trained
and certified technicians.
WARNING
Do not use water or methanol coolant or mix them with the specified coolant.
An incorrect coolant
mixture can result in severe
malfunction or engine/hybrid
system damage.

Maintenance
9-12
Engine oil and Filter
The engine oil and filter should be
changed at the intervals specified in the
maintenance schedule. If the vehicle
is being driven in severe conditions,
more frequent oil and filter changes are
required.
HSG (Hybrid Starter & Generator) Belt
The HSG belt should be changed at the
intervals specified in the maintenance schedule.
Fuel Lines, Fuel Hoses and Connections
Check the fuel lines, fuel hoses and
connections for leakage and damage.
We recommend an authorized HYUNDAI
dealer replace any damaged or leaking
parts immediately.
Fuel Filter
A clogged filter can limit the speed
at which the vehicle may be driven,
damage the emission system and cause
multiple issues such as hard starting. If
an excessive amount of foreign matter
accumulates in the fuel tank, the
filter may require replacement more
frequently. After installing a new filter,
run the engine for several minutes,
and check for leaks at the connections.
Fuel filters should be installed by an
authorized HYUNDAI dealer.
Vapor Hose and Fuel Filler Cap
The vapor hose and fuel filler cap should
be inspected at those intervals specified
in the maintenance schedule. Make sure
a new vapor hose or fuel filler cap is
correctly replaced.
Air Cleaner Filter
A genuine HYUNDAI air cleaner filter
is recommended when the filter is
replaced.
Spark Plugs
Make sure to install new spark plugs of
the correct heat range.
When assembling parts, be sure to
wipe the inside and outside of the boot
bottom of the ignition coil and the
insulator of the spark plug with a soft
cloth to prevent contamination of the
spark plug insulator.
Cooling System
Check cooling system components, such
as radiator, coolant reservoir, hoses and
connections for leakage and damage.
Replace any damaged parts.
Engine Coolant/Inverter Coolant
The coolant should be changed at the
intervals specified in the maintenance schedule.
Automatic Transmission Fluid
Automatic transmission fluid should
not be checked under normal usage conditions.
We recommend that the automatic
transmission fluid is changed by an
authorized HYUNDAI dealer according to
the maintenance schedule.
Engine Clutch Actuator Fluid
The engine clutch actuator fluid level
should be inspected or replaced to the
intervals specified in the maintenance schedule.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS

09
9-17
WARNING
Never remove the engine
coolant cap and/or inverter
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.
Turn the vehicle off and wait until the
engine cools down. Use extreme care
when removing the engine coolant
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.
Information
The engine coolant and/or inverter coolant level is influenced by the hybrid system
temperature. Before checking or refilling
the engine coolant and/or inverter coolant, turn the hybrid vehicle off.
WARNING
The electric motor for the cooling fan
may continue to operate or start up
when the engine is not running and
can cause serious injury. 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. Be cautious as the cooling
fan may operate if the negative (-)
battery terminal is not disconnected.
WARNING
Make sure the coolant cap is properly
closed after refilling coolant. Otherwise
the engine could be overheated while driving.
„Engine compartment front view
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1. Check if the coolant cap label is straight In front.
„Engine compartment rear view
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2. Make sure that the tiny protrusions inside the coolant cap is securely
interlocked.