
05
5-77
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 until it is
latched securely.
Information
To lock the fuel filler door, make sure the
fuel filler door is completely closed. Press
the LOCK button on the remote key or
smart key to lock your vehicle. The fuel
filler door will also lock.
Note that if the fuel filler door is not
completely closed when the vehicle is
locked, the fuel filler door will not be
locked.
CAUTION
Make sure the fuel filler door is
completely closed before driving
through a car wash or operating a high
pressure spray washer.
WARNING
Automotive fuel is highly flammable
and explosive. Failure to follow these
guidelines may result in SERIOUS
INJURY or DEATH:
• Read and follow all warnings posted
at the gas station.
• Before refueling, note the location
of the Emergency Fuel Shut-Off, if
available, at the gas station.
• Before touching the fuel nozzle, you
should eliminate the potential build-
up of static electricity by touching
a metal part of the vehicle, a safe
distance away from the fuel filler
neck, nozzle, or other gas source,
with your bare hand.
• Do not use mobile phones while
refueling. Electric current and/or
electronic interference from cellular
phones can potentially ignite fuel
vapors and cause a fire. •
Do not get back into a vehicle
once you have begun refueling.
You can generate a buildup of
static electricity by touching,
rubbing or sliding against any item
or fabric capable of producing
static electricity. Static electricity
discharge can ignite fuel vapors
causing a fire. If you must re-enter
the vehicle, you should once again
eliminate potentially dangerous
static electricity discharge by
touching a metal part of the vehicle,
away from the fuel filler neck, nozzle
or other fuel source, with your bare
hand.
• When using an approved portable
fuel container, be sure to place the
container on the ground prior to
refueling. Static electricity discharge
from the container can ignite fuel
vapors causing a fire.
Once refueling has begun, contact
between your bare hand and the
vehicle should be maintained until
the filling is complete.
• Use only approved portable plastic
fuel containers designed to carry and
store fuel.
• When refueling, always shift the
gear to the P (Park) position, set
the parking brake, and press the
Engine Start/Stop button to the
OFF position. Sparks produced by
electrical components related to the
engine can ignite fuel vapors causing
a fire.
• Do not use matches or a lighter and
do not smoke or leave a lit cigarette
in your vehicle while at a gas station,
especially during refueling.

Convenient features
5-78
• Do not over-fill or top-off your
vehicle tank, which can cause fuel
spillage.
• If a fire breaks out during refueling,
leave the vicinity of the vehicle, and
immediately contact the manager
of the gas station and then contact
the local fire department. Follow any
safety instructions they provide.
• If pressurized fuel sprays out, it can
cover your clothes or skin and thus
subject you to the risk of fire and
burns. Always remove the fuel cap
carefully and slowly. If the cap is
venting fuel or if you hear a hissing
sound, wait until the condition stops
before completely removing the cap.
• Always check that the fuel cap is
installed securely to prevent fuel
spillage in the event of an accident.
Information
Make sure to refuel your vehicle according
to the “Fuel Requirements” section in
suggested in chapter 1.
NOTICE
• Do not spill fuel on the exterior
surfaces of the vehicle. Any type of
fuel spilled on painted surfaces may
damage the paint.
• If the fuel filler cap requires
replacement, we recommend that
you use only a genuine HYUNDAI cap
or the equivalent specified for your
vehicle. An incorrect fuel filler cap
can result in a serious malfunction of
the fuel system or emission control
system.

05
5-79
Exterior lights
Lighting control
To operate the lights, turn the knob at
the end of the control lever to one of the
following positions:
ODN8059200
1. OFF position
2. AUTO headlamp position
3. Position lamp position
4. Headlamp position
Daytime Running Light (DRL)
The Daytime Running Lights (DRL) can
make it easier for others to see the front
of your vehicle during the day, especially
after dawn and before sunset. The
Daytime Running Lights (DRL) should
be illuminated whenever you are driving
during daylight hours. The DRL system
will be ON when the headlamp stalk is
in the OFF or the AUTO Position (when
daylight is detected) and the Electronic
Parking Brake (EPB) is released.
The DRL system will turn off when:
• The headlamps are ON.
• The parking brake is applied.
• The vehicle is turned off.
• Parking Brake is applied
ODN8059201
AUTO headlamp position
The position lamp and headlamp will
be turned ON or OFF automatically
depending on the amount of daylight as
measured by the ambient light sensor (1)
at the upper end of the windshield glass.
Even with the AUTO headlamp feature
in operation, it is recommended to
manually turn ON the headlamps when
driving at night or in a fog, driving in the
rain, or when you enter dark areas, such
as tunnels and parking facilities.
NOTICE
• Do not cover or spill anything on the
sensor (1) located at the upper end of
the windshield glass.
• Do not clean the sensor using
a window cleaner, the cleanser
may leave a light film which could
interfere with sensor operation.
• If your vehicle has window tint or
other types of metallic coating on
the front windshield, the AUTO
headlamp system may not work
properly.
LIGHTING

Convenient features
5-84
System operation
Display and control
• After selecting ‘High Beam Assist’
in the Settings menu, High Beam
Assist will operate by following the
procedure below.
-Place the headlamp switch in
the AUTO position and push
the headlamp lever towards the
instrument cluster. The High Beam
Assist (
) indicator light will
illuminate on the cluster and the
system will be enabled.
- When the system is enabled, high
beam will turn on when vehicle
speed is above 25mph (40km/h).
When vehicle speed is below 15mph
(25km/h), high beam will not turn
on.
-The High Beam () indicator light
will illuminate on the cluster when
high beam is on.
• When High Beam Assist is operating, if
the headlamp lever or switch is used,
the system operates as follow:
-If the headlamp lever is pulled
towards you when the high beam
is off, the high beam will turn on
without High Beam Assist canceled.
When you let go of the headlamp
lever, the lever will move to the
middle and the high beam will turn
off.
-If the headlamp lever is pulled
towards you when the high beam is
on by High Beam Assist, low beam
will be on and the system will turn
off.
-If the headlamp switch is placed
from AUTO to another position
(headlamp/position/off), High
Beam Assist will turn off and the
corresponding lamp will turn on. •
When High Beam Assist is operating,
high beam switches to low beam if
any of the following conditions occur:
-When the headlamp of an
oncoming vehicle is detected.
-When the tail lamp of a vehicle in
front is detected.
-When the headlamp or tail lamp of a
motorcycle or a bicycle is detected.
-When the surrounding ambient light
is bright enough that high beams
are not required.
-When streetlights or other lights are
detected.
System malfunction and
limitations
System malfunction
Type AType B
OTM050218NOTM050218L
When High Beam Assist is not working
properly, the ‘Check High Beam Assist
(HBA) system’ or ‘Check HBA (High
Beam Assist system’ warning message
will appear and
warning light will
illuminate on the cluster. We recommend
that the system be inspected by an
authorized HYUNDAI dealer.
![HYUNDAI TUCSON 2023 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 2023 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/35/56195/w960_56195-244.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.

Convenient features
5-102
ONX4050071
Air Conditioning refrigerant label
You can find out which air conditioning
refrigerant is applied to your vehicle on
the label located inside of the hood.
Example
OHYK059001
Each symbol and specification on the
air conditioning refrigerant label is
represented as below:
1. Classification of refrigerant
2. Amount of refrigerant
3. Classification of compressor lubricant
4. Caution
5. Flammable refrigerant
6. To require registered technician to
service air conditioning system

Convenient features
5-114
Air conditioning system operation tips
• If the vehicle has been parked in
direct sunlight during hot weather,
open the windows for a short time
to let the hot air inside the vehicle
escape.
• After sufficient cooling has been
achieved, switch back from the
recirculated air to the fresh outside air
position.
• To help reduce moisture inside of
the windows on rainy or humid
days, decrease the humidity inside
the vehicle by operating the air
conditioning system with the windows
and sunroof closed.
• Use the air conditioning system every
month for a few minutes to ensure
maximum system performance.
• If you operate the air conditioner
excessively, the difference between
the temperature of the outside air and
that of the windshield could cause
the outer surface of the windshield to
fog up, causing loss of visibility. In this
case, set the mode selection button to
the
position and set the fan speed control knob to the lowest speed
setting.
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.

05
5-115
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.
ONX4050071
Air Conditioning refrigerant label
You can find out which air conditioning
refrigerant is applied to your vehicle on
the label located inside of the hood.
Example
OHYK059001
Each symbol and specification on the
air conditioning refrigerant label is
represented as below:
1. Classification of refrigerant
2. Amount of refrigerant
3. Classification of compressor lubricant
4. Caution
5. Flammable refrigerant
6. To require registered technician to
service air conditioning system