2023 HYUNDAI TUCSON HYBRID washer fluid

07
7-25
WARNING
• Even though the warning message or
warning light does not appear on the
cluster, Forward Collision-Avoidance
Assist may not properly operate.
• Forward Collision-Avoidance Assist
may not properly operate in an area
(for example, open terrain), where
any substance are not detected after
turning ON the engine.
• If the engine is turned off and
restarted while the camera is
blocked or malfunctioned, the
condition is maintained. Therefore,
Forward Collision-Avoidance Assist
may not operate properly.
Limitations of Forward Collision-
Avoidance Assist
Forward Collision-Avoidance Assist may
not operate normally, or it may operate
unexpectedly under the following
circumstances:
• The detecting sensor or the
surroundings are contaminated or
damaged
• The temperature around the front view camera is high or low due to
surrounding environment
• The camera lens is contaminated due to tinted, filmed or coated windshield,
damaged glass, or sticky foreign
material (sticker, bug, etc.) on the
glass
• Moisture is not removed or frozen on the windshield
• Washer fluid is continuously sprayed, or the wiper is on
• Driving in heavy rain or snow, or thick fog
• The field of view of the front view camera is obstructed by sun glare
• Street light or light from an oncoming vehicle is reflected on the wet road
surface, such as a puddle on the road
• An object is placed on the dashboard • Your vehicle is being towed
• The surrounding is very bright
• The surrounding is very dark, such as
in a tunnel, etc.
• The brightness changes suddenly, for example when entering or exiting a
tunnel
• The brightness outside is low, and the headlights are not on or are not bright
• Driving through steam, smoke or shadow
• Only part of the vehicle, pedestrian or cyclist is detected
• The vehicle in front is a bus, heavy truck, truck with an unusually shaped
luggage, trailer, etc.
• The vehicle in front has no tail lights, tail lights are located unusually, etc.
• The brightness outside is low, and the tail lamps are not on or are not bright
• The rear of the front vehicle is small or the vehicle does not look normal,
such as when the vehicle is tilted,
overturned, or the side of the vehicle
is visible, etc.
• The front vehicle’s ground clearance is low or high
• A vehicle, pedestrian or cyclist suddenly cuts in front
• The bumper around the front radar is impacted, damaged or the front radar
is out of position
• The temperature around the front radar is high or low
• Driving through a tunnel or iron bridge
• Driving in large areas where there are few vehicles or structures (for
example, desert, meadow, suburb,
etc.)
• Driving near areas containing metal substances, such as a construction
zone, railroad, etc.

Driver Assistance System7-90
Limitations of Smart Cruise Control
Smart Cruise Control may not operate
normally, or it may operate unexpectedly
under the following circumstances:
• The detecting sensor or the surroundings are contaminated or
damaged
• Washer fluid is continuously sprayed, or the wiper is on
• The camera lens is contaminated due to tinted, filmed or coated windshield,
damaged glass, or sticky foreign
material (sticker, bug, etc.) on the
glass
• Moisture is not removed or frozen on the windshield
• The field of view of the front view camera is obstructed by sun glare
• Street light or light from an oncoming vehicle is reflected on the wet road
surface, such as a puddle on the road
• The temperature around the front view camera is high or low
• An object is placed on the dashboard
• The surrounding is very bright
• The surrounding is very dark, such as in a tunnel, etc.
• The brightness changes suddenly, for example when entering or exiting a
tunnel
• The brightness outside is low, and the headlights are not on or are not bright
• Driving in heavy rain or snow, or thick fog
• Driving through steam, smoke or shadow • Only part of the vehicle is detected
• The vehicle in front has no tail lights,
tail lights are located unusually, etc.
• The brightness outside is low, and the tail lamps are not on or are not bright
• The rear of the front vehicle is small or does not look normal (for example,
tilted, overturned, etc.)
• The front vehicle’s ground clearance is low or high
• A vehicle suddenly cuts in front
• Your vehicle is being towed
• Driving through a tunnel or iron bridge
• Driving near areas containing metal substances, such as a construction
zone, railroad, etc.
• A material is near that reflects very well on the front radar, such as a
guardrail, nearby vehicle, etc.
• The bumper around the front radar is impacted, damaged or the front radar
is out of position
• The temperature around the front radar is high or low
• Driving in large areas where there are few vehicles or structures (for
example, desert, meadow, suburb,
etc.)
• The vehicle in front is made of material that does not reflect on the
front radar
• Driving near a highway (or motorway) interchange or tollgate
• Driving on a slippery surface due to snow, water puddle, ice, etc.
• Driving on a curved road
• The vehicle in front is detected late
• The vehicle in front is suddenly blocked by an obstacle
• The vehicle in front suddenly changes lane or suddenly reduces speed

9
9. Maintenance
Engine Compartment ........................................................................\
............... 9-3
Maintenance Services ........................................................................\
.............. 9-4
Owner’s Responsibility ........................................................................\
....................... 9-4
Owner Maintenance Precautions ........................................................................\
....... 9-4
Owner Maintenance ........................................................................\
................. 9-5Owner Maintenance Schedule ........................................................................\
............9-5
Scheduled Maintenance Services ....................................................................9-7Normal Maintenance Schedule ........................................................................\
.......... 9-9
Maintenance Under Severe Usage Conditions ....................................................... 9-12
Explanation of Scheduled Maintenance Items .............................................. 9-14
Engine Oil ........................................................................\
.................................9-16
Checking the Engine Oil Level ........................................................................\
........... 9-16
Checking the Engine Oil and Filter ........................................................................\
....9-17
Engine Coolant/Inverter Coolant ....................................................................9-18Checking the Coolant Level......................................................................\
................. 9-18
Changing Coolant ........................................................................\
............................. 9-20
Hybrid Starter & Generator (HSG) Belt ........................................................... 9-21
Checking the Hybrid Starter & Generator (HSG) Belt .............................................. 9-21
Brake Fluid ........................................................................\
................................ 9-21Checking the Brake Fluid Level ........................................................................\
......... 9-21
Washer Fluid ........................................................................\
............................ 9-22Checking the Washer Fluid Level ........................................................................\
...... 9-22
Air Cleaner ........................................................................\
............................... 9-23Filter Replacement ........................................................................\
............................. 9-23
Cabin Air Filter ........................................................................\
......................... 9-24Filter Inspection........................................................................\
..................................9-24
Filter Replacement ........................................................................\
.............................9-24
Wiper Blades ........................................................................\
........................... 9-25Blade Inspection ........................................................................\
................................ 9-25
Blade Replacement ........................................................................\
............................ 9-25
Battery (Plug-in hybrid vehicle) ..................................................................... 9-29For Best Battery Service ........................................................................\
................... 9-30
Battery Capacity Label ........................................................................\
....................... 9-31
Battery Recharging ........................................................................\
............................ 9-31
Reset Items ........................................................................\
.........................................9-33

9-3
09
„„Smartstream G1.6 T-GDi HEVSmartstream G1.6 T-GDi HEV
The actual engine compartment in the vehicle may differ from the illustration.
ONX4PH091001NONX4PH091001N
1. ECU
2. Engine coolant reservoir
3. Engine coolant reservoir cap
4. Inverter coolant reservoir
5. Brake fluid reservoir
6. Air cleaner7. Engine oil filler cap
8. Engine oil dipstick
9. Windshield washer fluid reservoir
10. Fuse box
11. Inverter coolant reservoir cap
ENGINE COMPARTMENT

09
9-5
WARNING
Performing maintenance work on a
vehicle can be dangerous. If you lack
sufficient knowledge and experience
or the proper tools and equipment
to do the work, have it done by an
authorized HYUNDAI dealer. ALWAYS
follow these precautions for performing
maintenance work:
• Park your vehicle on level ground,
move the shift button into the P
(Park) position, apply the parking
brake, and place the Engine Start/
stop button in the OFF position.
• Block the tires (front and back) to
prevent the vehicle from moving.
Remove loose clothing or jewelry
that can become entangled in
moving parts.
• If you must run the engine during
maintenance, do so out doors or in
an area with plenty of ventilation.
• Keep flames, sparks, or smoking
materials away from the battery and
fuel-related parts. The following lists are vehicle checks and
inspections that should be performed
by the owner or an authorized HYUNDAI
dealer at the frequencies indicated to
help ensure safe, dependable operation
of your vehicle.
Any adverse conditions should be
brought to the attention of your dealer as
soon as possible.
These Owner Maintenance vehicle
checks are generally not covered by
warranties and you may be charged for
labor, parts and lubricants used.
Owner Maintenance Schedule
When you stop for fuel:
• Check the coolant level in the engine
coolant reservoir.
• Check the windshield washer fluid level.
• Check for low or under-inflated tires.
WARNING
Be careful when checking your engine
coolant/inverter coolant level if the
engine is hot. This may result in coolant
being blown out of the opening and
cause serious burns and other injuries.
OWNER MAINTENANCE

Maintenance9-6
While operating your vehicle:
• Note any changes in the sound of the exhaust or any smell of exhaust fumes
in the vehicle.
• Check for vibrations in the steering wheel. Notice if there is any increased
steering effort or looseness in the
steering wheel, or change in its
straight-ahead position.
• Notice if your vehicle constantly turns slightly or “pulls” to one side when
traveling on smooth, level road.
• When stopping, listen and check for unusual sounds, pulling to one side,
increased brake pedal travel or “hard-
to-push” brake pedal.
• If any slipping or changes in the operation of your transmission occurs,
check the transmission fluid level.
• Check the automatic transmission P (Park) function.
• Check the parking brake.
• Check for fluid leaks under your vehicle (water dripping from the air
conditioning system during or after
use is normal).
At least monthly:
• Check coolant level in the engine coolant reservoir.
• Check the operation of all exterior lights, including the stoplights, turn
signals and hazard warning flashers.
• Check the inflation pressures of all tires including the spare for tires that
are worn, show uneven wear, or are
damaged.
• Check for loose wheel lug nuts.
At least twice a year:
• Check radiator, heater and air conditioning hoses for leaks or
damage.
• Check windshield washer spray and wiper operation. Clean wiper blades
with a clean cloth dampened with
washer fluid.
• Check headlight alignment.
• Check muffler, exhaust pipes, shields and clamps.
• Check the seat belts for wear and function.
At least once a year:
• Clean body and door drain holes.
• Lubricate door hinges and hood hinges.
• Lubricate door and hood locks and latches.
• Lubricate door rubber weather strips.
• Check the air conditioning system.
• Inspect and lubricate automatic transmission linkage and controls.
• Clean the battery and terminals. (For plug-in hybrid vehicle)
• Check the brake fluid level.

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.

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).