
Introduction
1-6
Using Fuel Additives (except Detergent Fuel Additives)
Using fuel additives such as:
-Silicone fuel additive
-Ferrocene (iron-based) fuel additive
-Other metallic-based fuel additives
May result in cylinder misfire, poor acceleration, engine stalling, damage to the
catalyst, or abnormal corrosion, and may cause damage to the engine resulting in a
reduction in the overall life of the powertrain.
- The Malfunction Indicator Lamp (MIL) may illuminate.
NOTICE
Damage to the fuel system or performance problem caused by the use of these fuels
may not be covered by your New Vehicle Limited Warranty.
Gasoline containing MMT
Some gasoline contains harmful manganese-based fuel additives such as MMT
(Methylcyclopentadienyl Manganese Tricarbonyl).
HYUNDAI does not recommend the use of gasoline containing MMT.
This type of fuel can reduce vehicle performance and affect your emission control
system.
The malfunction indicator lamp on the cluster may come on.
Detergent Fuel Additives
HYUNDAI recommends that you use good quality gasolines treated with detergent
additives such as TOP TIER Detergent Gasoline, which help prevent deposit formation
in the engine. These gasolines will help the engine run cleaner and enhance
performance of the Emission Control System. For more information on TOP TIER
Detergent Gasoline, please go to the website (www. toptiergas.com).
For customers who do not use TOP Tier Detergent Gasoline regularly, and have
problems starting or the engine does not run smoothly, detergent-based fuel additives
that you can purchase separately may be added to the gasoline. If TOP TIER Detergent
Gasoline is not available, one bottle of additive added to the fuel tank according to the
maintenance schedule is recommended (refer to the Maintenance Schedule in chapter
9).
Additives are available from your authorized HYUNDAI dealer along with information
on how to use them. Do not mix other additives.
Operation in foreign countries
If you are going to drive your vehicle in another country, be sure to:
• Observe all regulations regarding registration and insurance.
• Determine that acceptable fuel is available.
![HYUNDAI TUCSON 2022 Owners Manual 05
5-101
System maintenance
Cabin air filter
OIK047401L[A] : Outside air, [B] : Recirculated air
[C] : Cabin air filter, [D] : Blower
[E] : Evaporator core, [F] : Heater core
The cabin air filter is i HYUNDAI TUCSON 2022 Owners Manual 05
5-101
System maintenance
Cabin air filter
OIK047401L[A] : Outside air, [B] : Recirculated air
[C] : Cabin air filter, [D] : Blower
[E] : Evaporator core, [F] : Heater core
The cabin air filter is i](/manual-img/35/41173/w960_41173-244.png)
05
5-101
System maintenance
Cabin air filter
OIK047401L[A] : Outside air, [B] : Recirculated air
[C] : Cabin air filter, [D] : Blower
[E] : Evaporator core, [F] : Heater core
The cabin air filter is installed behind
the glove box. It filters the dust or other
pollutants that enter the vehicle through
the heating and air conditioning system.
We recommend that the cabin air filter
be replaced by an authorized HYUNDAI
dealer according to the maintenance
schedule.
If the vehicle is being driven in severe
conditions such as dusty or rough roads,
more frequent climate control filter
inspections and changes are required.
If the air flow rate suddenly decreases,
we recommend the system be checked
at an authorized HYUNDAI dealer.
Air Conditioning Performance and
Maintenance at Your HYUNDAI
Dealer
When the amount of refrigerant is low,
the performance of the air conditioning
is reduced. Overfilling also reduces the
performance of the air conditioning system.
Therefore, if abnormal operation is found, we
recommend that the system be inspected by
an authorized HYUNDAI dealer.
NOTICE
It is important that the correct type and
amount of oil and refrigerant is used.
Otherwise, damage to the compressor
and abnormal system operation may
occur. To prevent damage, the air
conditioning system in your vehicle
should only be serviced by trained and
certified technicians.
WARNING
Vehicles equipped with R-1234yf
Since the refrigerant is
mildly flammable and
operated at high pressure,
the air conditioning system
should only be serviced
by trained and certified
technicians. It is important
that the correct type and
amount of oil and refrigerant
are used.
All refrigerants should be reclaimed
with proper equipment.
Venting refrigerants directly to the
atmosphere is harmful to individuals
and environment. Failure to heed these
warnings can lead to serious injuries.

Driving your vehicle
6-52
ALL WHEEL DRIVE (AWD) (IF EQUIPPED)
Type A
ONX4060013
Type B
ONX4E060031
The All Wheel Drive (AWD) System
delivers engine power to all front and
rear wheels for maximum traction. AWD
is useful when extra traction is required
on roads such slippery, muddy, wet, or
snow-covered roads.
Occasional off-road use such as
established unpaved roads and trails are
OK. It is always important that the driver
carefully reduces the speed to a level
that does not exceed the safe operating
speed for those conditions.
WARNING
To reduce the risk of SERIOUS INJURY
or DEATH:
• Do not drive in conditions that
exceed the vehicles intended
design such as challenging off-road
conditions.
• Avoid high speeds when cornering or
turning.
• Do not make quick steering wheel
movements, such as sharp lane
changes or fast, sharp turns.
• The risk of a rollover is greatly
increased if you lose control of your
vehicle at highway speeds.
• Loss of control often occurs if two or
more wheels drop off the roadway
and the driver over steers to reenter
the roadway.
• In the event your vehicle leaves
the roadway, do not steer sharply.
Instead, slow down before pulling
back into the travel lanes.
NOTICE
• Do not drive in water if the level
is higher than the bottom of the
vehicle.
• Check your brake condition once
you are out of mud or water. Depress
the brake pedal several times as you
move slowly until you feel normal
braking return.
• Shorten your scheduled
maintenance interval if you drive in
off-road conditions such as sand,
mud or water (see "Maintenance
Under Severe Usage Conditions" in
chapter 7).
• Always wash your vehicle thoroughly
after off road use, especially the
bottom of the vehicle.
• Be sure to equip the vehicle with four
tires of the same size and type.
• Make sure that a full time AWD
vehicle is tow ed by a flat bed tow
truck.

Maintenance
9. Maintenance
Engine compartment ........................................................................\
................9-3
Maintenance services
........................................................................\
...............9-4Owner’s responsibility ........................................................................\
........................9-4
Owner maintenance precautions ........................................................................\
....... 9-4
Owner maintenance ........................................................................\
.................9-5Owner maintenance schedule ........................................................................\
...........9-6
Scheduled maintenance services .....................................................................9 -7Normal maintenance schedule ........................................................................\
..........9-8
Maintenance under severe usage conditions ..........................................................9-12
Explanation of scheduled maintenance items ..............................................9-14
Engine oil
........................................................................\
..................................9-17Checking the engine oil level ........................................................................\
.............9-17
Checking the Engine Oil and Filter ........................................................................\
...9-1 8
Engine coolant ........................................................................\
.......................9-20Checking the coolant level ........................................................................\
...............9-20
Changing coolant ........................................................................\
...............................9-22
Brake fluid ........................................................................\
...............................9-23Checking the brake fluid level ........................................................................\
...........9-23
Washer fluid ........................................................................\
............................9-24Checking the washer fluid level ........................................................................\
........9-24
Air cleaner ........................................................................\
...............................9-25Filter replacement ........................................................................\
..............................9-25
Cabin air filter ........................................................................\
..........................9-26Filter inspection ........................................................................\
..................................9-26
Filter replacement ........................................................................\
..............................9-26
Wiper blades ........................................................................\
............................9-27Blade inspection ........................................................................\
.................................9-27
Blade replacement ........................................................................\
.............................9-27
Battery ........................................................................\
.....................................9-32
For best battery service ........................................................................\
.....................9-33
Battery capacity label ........................................................................\
........................9-3 3
Battery recharging ........................................................................\
.............................9-34
Reset items ........................................................................\
.........................................9-35
9

Maintenance
9-6
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 coolant
level when the engine is hot. This may
result in coolant being blown out of the
opening and cause serious burns and
other injuries.
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 headlamp 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.
• Check the brake fluid level.

09
9 -7
Follow Normal Maintenance Schedule if the vehicle is usually operated where none of
the following conditions apply. If any of the following conditions apply, you must follow
the Maintenance Under Severe Usage Conditions.
• Repeated driving short distance of less than 5 miles (8 km) in normal temperature or
less than 10 miles (16 km) in freezing temperature
• Extensive engine idling or low speed driving for long distances
• Driving on rough, dusty, muddy, unpaved, graveled or salt-spread roads
• Driving in areas using salt or other corrosive materials or in very cold weather
• Driving in heavy dust conditions
• Driving in heavy traffic area
• Driving on uphill, downhill, or mountain road repeatedly
• Towing a trailer or using a camper, or driving with loads on the roof
• Driving as a patrol car, taxi, other commercial use of vehicle towing
• Frequently driving under high speed or rapid acceleration/deceleration
• Frequently driving in stop-and-go condition
• Engine oil usage which is not recommended (Mineral type, Semi-synthetic, Lower
grade spec, etc.)
If your vehicle is operated under the above conditions, you should inspect, replace
or refill more frequently than the following Normal Maintenance Schedule. After the
periods or distance shown in the chart, continue to follow the prescribed maintenance
intervals.
Information
• As it is normal for engine oil to be consumed during driving, the engine oil level should
be checked on regular basis.
• The engine oil change interval for normal operating conditions is based on the use of
the recommended engine specification. If the recommended engine oil specification
is not used, then replace the engine oil according to the maintenance schedule under
severe operating conditions.
SCHEDULED MAINTENANCE SERVICES

Maintenance
9-8
Normal maintenance schedule
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM Number of months or driving distance, whichever comes first
Months 1224 3648 60 7284 96108 120132144 156
Miles×1,000 816 24 3240 48 5664 7280 8896104
Km×1,000 1326 39 5265 78 91104 117130 143156169
Engine oil and engine oil filter
*1
R RRRRRRR RRRRR
Drive belts
*2
At first, inspect at 48,000 miles (78,000 km) or 72 months.
Thereafter, inspect every 8,000 miles (13,000 km) or 12 months
Fuel additives *
3
Add every 8,000 miles (13,000 km) or 12 months
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.*1 : Check the engine oil level and leak every 350miles (500km) or before starting a long trip. As it is normal for engine oil to be consumed during driving, the engine oil level should be checked on regular basis. The engine oil change interval for normal
operating conditions is based on the use of the recommended engine specification. If the recommended engine oil specification is
not used, then replace the engine oil according to the maintenance schedule under severe operating conditions.
*2 : The drive belt should be replaced when cracks occur or tension is reduced excessively.
*3 : If TOP TIER Detergent Gasoline is not available, one bottle of additive is recommended. Additives are available from your authorized
HYUNDAI dealer along with information on how to use them. Do not mix other additives.

09
9-9
Normal maintenance schedule
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM Number of months or driving distance, whichever comes first
Months 1224 3648 60 7284 96108 120 132144 156
Miles×1,000 816 24 3240 48 5664 7280 8896104
Km×1,000 1326 39 5265 78 91104 117130 143156169
Air cleaner filter IIR IIR IIR IIR I
Spark plugs
*4
Replace every 96,000 miles (156,000 km)
Vapor hose, fuel filler cap and fuel tank IIIIII
Fuel tank air filter IIIIII
Fuel lines, hoses and connections IIIIII
I : Inspect and if necessary, adjust, correct, clean or replace.
R : Replace or change.*4 : For your convenience, it can be replaced prior to it’s interval when you do maintenance of other items.
Fuel filter :
The fuel filter is consider
ed to be maintenance free but periodic inspection is recommended for this maintenance schedule
depends on fuel quality. If there are some important matters like fuel flow restriction, surging, loss of power, hard starting
problem etc, replace the fuel filter immediately regardless of maintenance schedule. We recommend that you consult an
authorized HYUNDAI dealer for details.