![HYUNDAI TUCSON 2021 Owners Manual 3-135
Convenient features of your vehicle
3
System Maintenance
Climate control air filter
[A] : Outside air, [B] : Recirculated air
[C] : Climate control air filter, [D] : Blower
[E] : Evaporator core HYUNDAI TUCSON 2021 Owners Manual 3-135
Convenient features of your vehicle
3
System Maintenance
Climate control air filter
[A] : Outside air, [B] : Recirculated air
[C] : Climate control air filter, [D] : Blower
[E] : Evaporator core](/manual-img/35/56200/w960_56200-225.png)
3-135
Convenient features of your vehicle
3
System Maintenance
Climate control air filter
[A] : Outside air, [B] : Recirculated air
[C] : Climate control air filter, [D] : Blower
[E] : Evaporator core, [F] : Heater core
This filter is installed behind the
glove box. It filters the dust or other
pollutants that enter the vehicle
through the heating and air condi-
tioning system.Have the climate control air filter
replaced by an authorized HYUNDAI
dealer according to the maintenance
schedule. If the car 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 decreas-
es, the system should be checked at
an authorized HYUNDAI dealer.
Checking the amount of air
conditioner refrigerant and
compressor lubricant
When the amount of refrigerant is
low, the performance of the air con-
ditioning is reduced. Overfilling also
reduces the performance of the air
conditioning system.
Therefore, if abnormal operation is
found, have the system inspected by
an authorized HYUNDAI dealer.
It is important that the correct
type and amount of oil and refrig-
erant is used. Otherwise, damage
to the compressor and abnormal
system operation may occur. To
prevent damage, the air condition-
ing system in your vehicle should
only be serviced by trained and
certified technicians.
NOTICE
OIK047401L

3-148
Convenient features of your vehicle
If you operate the air conditioner
excessively, the difference
between the temperature of the
outside air and that of the wind-
shield could cause the outer sur-
face of the windshield to fog up,
causing loss of visibility. In this
case, toggle the mode selection
button to the position and set
the fan speed control knob to the
lowest speed setting.
System Maintenance
Climate control air filter
[A] : Outside air, [B] : Recirculated air
[C] : Climate control air filter, [D] : Blower
[E] : Evaporator core, [F] : Heater core
This filter is installed behind the glove
box. It filters the dust or other pollu-
tants that enter the vehicle through the
heating and air conditioning system.
Have the climate control air filter
replaced by an authorized HYUNDAI
dealer according to the maintenance
schedule. If the car is being driven in
severe conditions such as dusty or
rough roads, more frequent climate
control air filter inspections and
changes are required.If the air flow rate suddenly decreas-
es, the system should be checked at
an authorized HYUNDAI dealer.
Checking the amount of air
conditioner refrigerant and
compressor lubricant
When the amount of refrigerant is
low, the performance of the air con-
ditioning is reduced. Overfilling also
reduces the performance of the air
conditioning system.
Therefore, if abnormal operation is
found, have the system inspected by
an authorized HYUNDAI dealer.
It is important that the correct
type and amount of oil and refrig-
erant is used. Otherwise, damage
to the compressor and abnormal
system operation may occur. To
prevent damage, the air condition-
ing system in your vehicle should
only be serviced by trained and
certified technicians.
NOTICE
OIK047401L

5-44
Driving your vehicle
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 slow-
ly until you feel normal braking
return.
Shorten your scheduled mainte-
nance 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 thor-
oughly after off road use, espe-
cially 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 towed by a flat bed
tow truck.
NOTICEIn the event your vehicle
leaves the roadway, do not
steer sharply. Instead, slow
down before pulling back into
the travel lanes.

7
Maintenance
7
Maintenance
Engine Compartment .............................................7-3
Maintenance Services ...........................................7-4
Owner's Responsibility .....................................................7-4
Owner Maintenance Precautions..................................7-4
Owner Maintenance ..............................................7-5
Owner Maintenance Schedule .......................................7-6
Scheduled Maintenance Services........................7-8
Normal Maintenance Schedule
(2.0 GDI, 2.4 GDI) ...............................................................7-9
Maintenance Under Severe Usage Conditions
(2.0 GDI, 2.4 GDI)..............................................................7-12
Severe Driving Conditions .............................................7-13
Explanation Of Scheduled Maintenance
Items ......................................................................7-\
14
Engine Oil ..............................................................7-17
Checking the Engine Oil Level .....................................7-17
Checking the Engine Oil and Filter .............................7-18
Engine Coolant .....................................................7-19
Checking the Engine Coolant Level ............................7-19
Changing Engine Coolant ..............................................7-22
Brake Fluid ............................................................7-23
Checking the Brake Fluid Level ...................................7-23
Washer Fluid .........................................................7-24
Checking the Washer Fluid Level................................7-24
Parking Brake .......................................................7-24
Checking the Parking Brake .........................................7-24
Air Cleaner ............................................................7-25
Filter Replacement ..........................................................7-25
Climate Control Air Filter ....................................7-27
Filter Inspection ...............................................................7-27
Wiper Blades.........................................................7-29
Blade Inspection ..............................................................7-29
Blade Replacement .........................................................7-29
Battery...................................................................7-33
For Best Battery Service ..............................................7-34
Battery Recharging ........................................................7-34
Reset Features.................................................................7-35
Tires and Wheels .................................................7-36
Tire Care ........................................................................\
....7-36
Recommended Cold Tire Inflation Pressures ...........7-37
Check Tire Inflation Pressure ......................................7-38
Tire Rotation...................................................................\
..7-38
Wheel Alignment and Tire Balance ............................7-39
Tire Replacement ............................................................7-40
Wheel Replacement ........................................................7-41
7

7-6
Maintenance
Owner Maintenance Schedule
When you stop for fuel:
• Check the engine oil level.
Check the coolant level in theengine coolant reservoir.
Check the windshield washer fluid level.
Check for tire for low or under- inflated tires.
While operating your vehicle:
Note any changes in the sound ofthe 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 loose-
ness in the steering wheel, or
change in its straight-ahead posi-
tion.
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 enginecoolant reservoir.
Check the operation of all exterior lights, including the brake lights,
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.
Be careful when checking your
engine 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.
WARNING

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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.
Repeatedly driving short distances 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
Towing a trailer, or using a camper, or roof rack
Driving as a patrol car, taxi, other commercial use or vehicle towing
Driving over 106 mph (170 km/h)
Frequently driving in stop-and-go conditions
For additional information or assistance see your authorized HYUNDAI dealer.
7-8
Maintenance

7-9
7
Maintenance
I : Inspect and if necessary, adjust, correct, clean or replace. R : Replace or change.
*1: The drive belt should be replaced when cracks occur or tension is reduced excessively.
*2: 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.
*
3: Inspect for excessive valve noise and/or engine vibration and adjust if necessary. Have an authorized HYUNDAI dealer per- form the operation.
Normal Maintenance Schedule (2.0 GDI, 2.4 GDI)
Months1224364860728496108120132144156168180
Miles×1,0007.51522.53037.54552.56067.57582.59097.5105112.5
Km×1,0001224364860728496108120132144156168180
Drive belts *1At first, inspect at 60,000 miles or 72 months.
Thereafter, inspect every 15,000 miles or 24 months
Engine oil and engine oil filterRRRRRRRRRRRRRRR
Fuel additives *2Add fuel additives every 7,500 miles or 12 months
Air cleaner filterIIRIIRIIRIIRIIR
Spark plugsReplace every 97,500 miles
Valve clearance *3Inspect every 60,000 miles or 72 months
Rotate tiresRotate tires every 7,500 miles
Climate control air filter
(for evaporator and blower unit)RRRRRRRRRRRRRRR
Vacuum hoseIIIIIIIIIIIIIII
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM

7-10
Maintenance
Months1224364860728496108120132144156168180
Miles×1,0007.51522.53037.54552.56067.57582.59097.5105112.5
Km×1,0001224364860728496108120132144156168180
Engine coolantAt first, replace at 120,000 miles or 10 years :
Thereafter, replace every 30,000 miles or 24 months
Battery conditionIIIIIIIIIIIIIII
Brake lines, hoses and connectionsIIIIIIIIIIIIIII
Front brake disc/pads, calipersIIIIIIIIIIIIIII
Rear brake disc/padsIIIIIIIIIIIIIII
Steering gear box, linkage and boots/
lower arm ball joint, upper arm ball jointIIIIIIIIIIIIIII
Driveshaft and bootsIIIIIII
Suspension mounting boltsIIIIIIIIIIIIIII
Air conditioner refrigerantIIIIIIIIIIIIIII
Air conditioner compressorIIIIIIIIIIIIIII
Propeller shaft (AWD)IIIIIII
Exhaust pipe and mufflerIIIIIIIIIIIIIII
MAINTENANCE
INTERVALS
MAINTENANCE
ITEM
I : Inspect and if necessary, adjust, correct, clean or replace. R : Replace or change.
Normal Maintenance Schedule (2.0 GDI, 2.4 GDI) (CONT)