HYUNDAI TUCSON HYBRID 2023 Owners Manual

09
9-19
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 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 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 until you disconnect
the (-) battery terminal (For plug-in
hybrid vehicle) or the battery connector
(For hybrid vehicle).
WARNING
Make sure the coolant cap is properly
closed after refilling coolant. Otherwise
the engine could be overheated while
driving.
„„Engine compartment front viewEngine compartment front view
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1. Check if the coolant cap label is straight In front.
„„Engine compartment rear viewEngine compartment rear view
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2. Make sure that the tiny protrusions inside the coolant cap is securely
interlocked.

Maintenance9-20
Recommended coolant
• When adding coolant, use only deionized water, distilled water or soft
water for your vehicle and never mix
hard water in the coolant filled at the
factory.
• An incorrect coolant mixture can result in severe malfunction or
engine/hybrid system damage.
• The engine in your vehicle has aluminum engine parts and must be
protected by an phosphate-based
ethylene glycol coolant to prevent
corrosion and freezing.
• Do not use alcohol or methanol coolant or mix them with the specified
coolant.
• Do not use a solution that contains more than 60% antifreeze or less than
35% antifreeze, which would reduce
the effectiveness of the solution.
For mixing percentage, refer to the
following table:
Ambient
Temperature Mixture Percentage
(volume)
Antifreeze Water
5°F (-15°C) 35 65
-

13°F (-25°C) 40 60
-31°F (-35°C) 50 50
-49°F (-45°C) 60 40
Information
If in doubt about the mix ratio, a 50%
water and 50% antifreeze mix is the
easiest to mix together as it will be the
same quantity of each. It is suitable to
use for most temperature ranges of -31°F
(-35°C) and higher.
Changing Coolant
Have coolant changed by an authorized
HYUNDAI dealer according to the
Maintenance Schedule at the beginning
of this chapter.
WARNING
Do not use engine coolant or antifreeze
in the washer fluid reservoir.
Engine coolant can severely obscure
visibility when sprayed on the
windshield and may cause loss of
vehicle control resulting in an accident.
Engine coolant may also cause damage
to paint and body trim.
NOTICE
To prevent damage to engine parts, put
a thick towel around the engine coolant
cap and/or inverter coolant cap before
refilling the coolant to prevent the
coolant from overflowing into engine
parts, such as the alternator.

09
9-21
Checking the Hybrid Starter &
Generator (HSG) Belt
Have the Hybrid Starter & Generator
(HSG) belt inspected or replaced
according to the Maintenance Schedule
in this chapter by an authorized
HYUNDAI dealer.
CAUTION
When the HSG belt is worn out or
damaged, replace the belt.
Otherwise, it may cause engine
overheating or battery discharge.
WARNING
• Turn the vehicle off while you inspect
the engine or Hybrid Starter &
Generator (HSG) belt. Otherwise it
may result in serious injury.
• Keep hands, clothing etc. away from
the Hybrid Starter & Generator (HSG)
belt.
Checking the Brake Fluid Level
ONX4H090009ONX4H090009
Check the fluid level in the reservoir
periodically. The fluid level should be
between MAX and MIN marks on the side
of the reservoir.
Before removing the reservoir cap and
adding brake fluid, clean the area around
the reservoir cap thoroughly to prevent
brake fluid contamination.
If the level is low, add the specified brake
fluid to the MAX level. The level will fall
with accumulated mileage. This is a
normal condition associated with the
wear of the brake linings. If the fluid level
is excessively low, have the brake system
checked by an authorized HYUNDAI
dealer.
WARNING
If the brake system requires frequent
additions of fluid this could indicate
a leak in the brake system. Have the
vehicle inspected by an authorized
HYUNDAI dealer.
HYBRID STARTER &
GENERATOR (HSG) BELT BRAKE FLUID

Maintenance9-22
WASHER FLUID
Checking the Washer Fluid Level
ONX4H090010ONX4H090010
Check the fluid level in the washer fluid
reservoir and add fluid if necessary.
Plain water may be used during summer
months if washer fluid is not available.
However, use washer solvent with
antifreeze characteristics in cold climates
to prevent freezing.
WARNING
To prevent serious injury or death, take
the following safety precautions when
using washer fluid:
• Do not use engine coolant or
antifreeze in the washer fluid
reservoir. Engine coolant can
severely obscure visibility when
sprayed on the windshield and
may cause loss of vehicle control
resulting in an accident or damage to
paint and body trim.
• Do not allow sparks or flame to
contact the washer fluid or the
washer fluid reservoir. Washer fluid
may contain alcohol and can be
flammable.
• Do not drink washer fluid and avoid
contact with skin. Washer fluid is
harmful to humans and animals.
• Keep washer fluid away from
children and animals.
WARNING
Do not let brake fluid enter into your
eyes. If brake fluid gets in your eyes,
flush your eyes with clean water for
at least 15 minutes and get immediate
medical attention.
NOTICE
• Do not allow brake fluid to contact
the vehicle’s body paint, as it will
result in paint damage.
• NEVER use brake fluid which has
been exposed to open air for an
extended time, as its quality cannot
be guaranteed.
• Do not use the wrong type of brake
fluid. A few drops of mineral based
oil, such as engine oil in your brake
system can damage brake system
parts.
Information
Use only the specified brake fluid (refer
to “Recommended Lubricants and
Capacities” section in chapter 2).

09
9-23
Filter Replacement
ONX4H090011ONX4H090011
Do not attempt to wash or to rinse it, as
water will damage the filter.
If soiled, the air cleaner filter must be
replaced.
Replace the filter according to the
Maintenance Schedule.
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1. Loosen the air cleaner cover attaching clips and open the cover.
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2. Wipe the inside of the air cleaner.
3. Replace the air cleaner filter.
4. Lock the cover with the cover attaching clips.
5. Check that the cover is firmly installed.
Information
If the vehicle is operated in extremely
dusty or sandy areas, replace the air
cleaner filter more often than the
usual recommended intervals (Refer
to “Maintenance Under Severe Usage
Conditions” section in this chapter).
NOTICE
• Do not drive with the air cleaner filter
removed. This will result in excessive
engine wear.
• When removing the air cleaner filter,
be careful that dust or dirt does not
enter the air intake, or damage may
result.
• Use HYUNDAI genuine parts or the
equivalent speficied for your vehicle.
Use of parts without the matching
quality could damage the air flow
sensor.
AIR CLEANER

Maintenance9-24
Filter Inspection
The cabin air filter should be replaced
according to the Maintenance Schedule.
If the vehicle is operated in severely air-
polluted cities or on dusty rough roads
for a long period, it should be inspected
more frequently and replaced sooner.
Replace the cabin air filter by following
the procedure below and be careful to
avoid damaging other components.
Filter Replacement
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1. Remove the support rod (1).
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2. Push in both sides of the glove box as shown. This will ensure that the glove
box stopper pins will get released
from its holding location allowing the
glove box to hang.
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3. Remove the climate control air filter case while pressing the lock on the
right side of the cover.
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4. Replace the climate control air filter.
5. Reassemble in the reverse order of disassembly.
NOTICE
Install a new climate control air filter
in the correct direction with the
arrow symbol (
¢) facing downwards,
otherwise, it may be noisy and the
effectiveness of the filter may be
reduced.
CABIN AIR FILTER

09
9-25
Blade Inspection
Contamination of either the windshield
or the wiper blades with foreign matter
can reduce the effectiveness of the
windshield wipers.
Common sources of contamination are
insects, tree sap, and hot wax treatments
used by some commercial car washes. If
the blades are not wiping properly, clean
both the window and the blades with a
good cleaner or mild detergent, and rinse
thoroughly with clean water.
NOTICE
To prevent damage to the wiper blades,
arms or other components, do not:
• Use gasoline, kerosene, paint
thinner, or other solvents on or near
them.
• Attempt to move the wipers
manually.
• Use non-specified wiper blades.
Information
Commercial hot waxes applied by
automatic car washes have been known to
make the windshield difficult to clean.
Blade Replacement
When the wipers no longer clean
adequately, the blades may be worn or
cracked, and require replacement.
NOTICE
To prevent damage to the wiper arms
or other components, do not attempt to
move the wipers manually.
NOTICE
The use of a non-specified wiper blade
could result in wiper malfunction and
failure.
NOTICE
• In order to prevent damage to the
hood and the wiper arms, the wiper
arms should only be lifted when in
the top wiping position.
• Always return the wiper arms to the
windshield before driving.
WIPER BLADES

Maintenance9-26
Front windshield wiper service
positions
ONX4090038ONX4090038
This vehicle has a “hidden” wiper design
which means that the wipers cannot
be lifted when they are in their bottom
resting position.
1. Within 20 seconds of turning off the engine, lift and hold the wiper lever
up to the MIST (or down to the
)
position for about 2 seconds until the
wipers move to the top wipe position.
2. At this time you can lift the wipers off the windshield.
3. Gently put the wipers back down onto the windshield.
4. Turn the wipers to any ON position to return the wipers to the bottom
resting position.
Type A
OGSR076067OGSR076067
OGSR076066OGSR076066
1. Lift up the wiper blade clip. Then lift up the wiper blade.
2. While pushing the lock (1), pull down the wiper blade (2).
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3. Remove the wiper blade from the wiper arm.
4. Install a new wiper blade assembly in the reverse order of removal.
5. Return the wiper arm on the windshield.

09
9-27
Type B
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1. Raise the wiper arm.
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2. Lift up the wiper blade clip. Then pull down the blade assembly and remove
it.
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3. Install the new blade assembly in the reverse order of removal.
4. Return the wiper arm on the windshield.
Rear window wiper blade
replacement
Move the rear wiper to the bottom
middle part, and lift up the wiper arm.
Pull the wiper blade to remove it.
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1. Within 20 seconds after the vehicle ignition is OFF, pull down the wiper
lever to MIST position for over 2
seconds until the wiper moves down
to the bottom middle part.
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2. Raise the wiper arm.

Maintenance9-28
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3. Lift up the wiper blade, and pull it out.
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4. Install the new blade assembly by inserting the center part into the slot
in the wiper arm until it clicks into
place.
If the replacement is complete, put
down the wiper arm to place it on
the rear windshield, and turn the
vehicle ignition to ON and operate the
wipers to check the blade is installed
correctly.
5. Make sure the blade assembly is installed firmly by trying to pull it
slightly.
To prevent damage to the wiper arms or
other components, Have the wiper blade
replaced by an authorized HYUNDAI
dealer.
CAUTION
If the wiper arm receives too much
force while pulling the blade, the center
part may be damaged.
CAUTION
• The wiper could not operate for
approx. 10 seconds when the wiper
is operated without washer fluid or
the blades are frozen. This is not a
malfunction, it is a wiper protection
system activated by motor overload
circuit within the wiper motor.
• The front windshield should be
cleaned with water hose and wiped
with clean towel with wiper blades
raised up. Also, the wiper blades
should be wiped clean when the
grease or wax is applied to the
blades.