2023 HYUNDAI TUCSON air conditioning

Driving your vehicle
6-12
Auto shut-off system (if equipped)
To prevent accidents caused by carbon
dioxide poisoning, the engine is turned
off automatically 60 minutes later when
the following conditions are satisfied.
The timer appears on the instrument
cluster 30 minutes before it turns off
automatically.
Operating conditions
• The driver does not fasten a seat belt
• No one in the passenger's seat
• Stop the vehicle and the speed is
under 1.86mph and the gear shift is
in P
• While the brake or accelerator is not
working
• When AVN update is performing
Cluster timer reset conditions
• Release the accelerator or brake after
completing operation
• Press the OK button on the steering
wheel while the timer appears on the
instrument cluster
Off conditions
• The driver fastened the seat belt
• A passenger is in the pasenger's seat
• Driving over 1.86mph
• Shifting the gear in R, N or D
CAUTION
Please do not leave a passenger or a pet
in the vehicle since the air conditioning
system stops when the engine is off.
Remote start (if equipped)
„„Type A
OTM060003
„„Type B
OTM060004
You can start the vehicle using the
Remote Start button of the smart key.

Driving your vehicle
6-48
Forced to restart engine
The engine is automatically restarted in
the following situations.
• The brake vacuum pressure is low
• The engine has stopped for about 5
minutes
• The air conditioning is ON with the fan
speed set to a certain high level
• The front defroster is ON
• The battery is weak
• The cooling and heating performance
of the climate control system is
unsatisfactory
• The vehicle is shifted to P (Park) or R
(Reverse) when Auto Hold is activated
• The door is opened or the seatbelt
is unfastened when Auto Hold is
activated
• The EPB switch is pressed when Auto
Hold is activated
The Auto Stop (
) indicator blinks in
green for 5 seconds on the instrument
cluster when the engine is restarted.
WARNING
When the engine is in Idle Stop mode,
the engine may restart without the
driver taking any action. Before leaving
the vehicle or working on the engine
compartment, turn off the engine by
pressing the ENGINE START/STOP
button to the OFF position.
ISG malfunction
ISG system may not operate when there
is a malfunction with the ISG sensors or
ISG system.
The following will occur, when there is a
malfunction with the ISG system:
• The Auto Stop (
) indicator will
illuminate in yellow on the instrument
cluster.
• The light on the ISG OFF button will
illuminate.
We recommend that you contact an
authorized HYUNDAI dealer.
NOTICE
If the AGM battery is reconnected or
replaced, ISG system will not operate
immediately. If you want to use the
system, the battery sensor needs to be
calibrated for approximately 4 hours
with the engine off.
After calibration, turn the engine on and
off 2 or 3 times.

08
8-5
Jump starting procedure
Information
Your vehicle has a battery in the luggage
compartment, but when you jump start
your vehicle, use the jumper terminal in
the engine compartment.
1. Position the vehicles close enough
that the jumper cables will reach, but
do not allow the vehicles to touch.
2. Avoid fans or any moving parts in the
engine compartment at all times, even
when the vehicles are turned off.
3. Turn off all electrical devices such as
radios, lights, air conditioning, etc.
Put the vehicles in P (Park) and set the
parking brake. Turn both vehicles OFF.
4. Open the engine hood.
ONX4080003
5. Connect the jumper cables in
the exact sequence shown in the
illustration. First connect one jumper
cable to the red, positive (+) jumper
terminal of your vehicle (1).
6. Connect the other end of the jumper
cable to the red, positive (+) battery/
jumper terminal of the assisting
vehicle (2).
7. Connect the second jumper cable to
the black, negative (-) battery/ chassis
ground of the assisting vehicle (3).
8. Connect the other end of the second
jumper cable to the black, negative (-)
chassis ground of your vehicle (4).
Do not allow the jumper cables to
contact anything except the correct
battery or jumper terminals or the
correct ground. Do not lean over the
battery when making connections.

08
8 -7
If your temperature gauge indicates
overheating, you experience a loss of
power, or hear loud pinging or knocking,
the engine may be overheating. If this
happens, you should:
1. Pull off the road and stop as soon as it
is safe to do so.
2. Shift the gear to P (Park) and set the
parking brake. If the air conditioning is
ON, turn it OFF.
3. If engine coolant is running out under
the vehicle or steam is coming out
from the hood, stop the engine. Do
not open the hood until the coolant
has stopped running or the steaming
has stopped. If there is no visible
loss of engine coolant and no steam,
leave the engine running and check
to be sure the engine cooling fan is
operating. If the fan is not running,
turn the engine off.
WARNING
While the engine is running, keep hands, clothing and tools
away from the moving parts
such as the cooling fan and
drive belt to prevent serious
injury.
4. Check for coolant leaking from the
radiator, hoses or under the vehicle. (If
the air conditioning had been in use, it
is normal for cold water to be draining
from it when you stop.)
5. If engine coolant is leaking out, stop
the engine immediately and call the
nearest authorized HYUNDAI dealer
for assistance.
WARNING
Never remove the engine coolant cap and/or water-
cooled intercooler coolant
cap or the drain plug while the
engine and radiator are hot.
Hot coolant and steam may blow out
under pressure, causing serious injury.
Turn the engine off and wait until the
engine cools down. Use extreme care
when removing the coolant cap. Wrap
a thick towel around it, and turn it
counterclockwise 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
counterclockwise to remove it.
IF THE ENGINE OVERHEATS

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.

Maintenance
9-16
Brake hoses and lines
Visually check for proper installation,
chafing, cracks, deterioration and any
leakage. Replace any deteriorated or
damaged parts immediately.
Brake fluid
Check the brake fluid level in the brake
fluid reservoir. The level should be
between the MIN and the MAX marks
on the side of the reservoir. Use only
hydraulic brake fluid conforming to DOT
4 specification.
Parking brake
Inspect the parking brake system
including the parking brake lever and
cables.
Brake discs, pads, calipers and
rotors
Check the pads, the disc, and the rotor
for any excessive wear-out. Inspect
calipers for any fluid leakage.
For more information on checking the
pads or lining wear limit, refer to the
HYUNDAI web site.
(http://service.hyundai-motor.com)
Drive Shaft and Related
Check the drive shaft, boots, clamps,
rubber couplings and center-bearing
rubber for cracks, deterioration, or
damage. Replace any damaged parts
and if necessary, repack the grease.
Suspension mounting bolts
Check the suspension connections for
looseness or damage. Retighten to the
specified torque.
Steering gear box, linkage &
boots/lower arm ball joint
With the vehicle stopped and the engine
off, check for excessive free-play in the
steering wheel. Check the linkage for
bends or damage. Check the dust boots
and ball joints for deterioration, cracks,
or damage.
Replace any damaged parts.
Air conditioning refrigerant
Check the air conditioning lines and
connections for leakage and damage.

IndexI-2
A
Accessing your vehicle .......................................................................................... 5-4
Hyundai Digital Key ........................................................................................ 5-15
Immobilizer system .......................................................................................... 5-14
Remote key ......................................................................................................... 5-4
Smart key ............................................................................................................ 5-7
Air bag - supplemental restraint system .............................................................. 3-46
Additional safety precautions ........................................................................... 3-67
Air bag warning labels ..................................................................................... 3-67
How does the air bags system operate? ............................................................ 3-51
Occupant Classification System (OCS) ........................................................... 3-55
SRS care ........................................................................................................... 3-66
What to expect after an air bag inflates ............................................................ 3-54
Where are the air bags? .................................................................................... 3-48
Why didn’t my air bag go off in a collision? ................................................... 3-61
Air cleaner ........................................................................................................... 9-25
Filter replacement ............................................................................................. 9-25
Air conditioning system ....................................................................................... 2-13
All wheel drive (AWD) ...................................................................................... 6-52
AWD operation................................................................................................. 6-53
Emergency precautions .................................................................................... 6-56
Appearance care................................................................................................... 9-63
Exterior care ..................................................................................................... 9-63
Interior care ...................................................................................................... 9-68
Automatic climate control system ..................................................................... 5-108
Automatic heating and air conditioning ......................................................... 5-109
Manual heating and air conditioning .............................................................. 5-110
Multi Air Mode............................................................................................... 5-116
System maintenance ....................................................................................... 5-119
System operation ............................................................................................ 5-117
Automatic transmission ....................................................................................... 6-14
Automatic transmission operation .................................................................... 6-14
Good driving practices ..................................................................................... 6-23
LCD display message (button type) ................................................................. 6-21
Paddle shifter (Manual shift mode) .................................................................. 6-22
010_NX4a_HMA_INDEX.indd I-2 2021-03-02  5:44:47

I
I-9
L
Lane Following Assist (LFA) ............................................................................ 7-101
Lane Following Assist Malfunction and Limitations ..................................... 7-104
Lane Following Assist Operation ................................................................... 7-102
Lane Following Assist Settings ...................................................................... 7-101
Lane Keeping Assist (LKA) ............................................................................... 7-31
Lane Keeping Assist Malfunction and Limitations .......................................... 7-35
Lane Keeping Assist Operation ........................................................................ 7-33
Lane Keeping Assist Settings .......................................................................... 7-31
LCD display ......................................................................................................... 4-29
LCD display control ......................................................................................... 4-29
Trip computer (Type A) .................................................................................... 4-40
Trip computer (Type B) .................................................................................... 4-43
User settings mode ........................................................................................... 4-33
View modes ...................................................................................................... 4-30
Light bulbs ........................................................................................................... 9-54
Headlamp, position lamp, turn signal lamp, Daytime Running Light (DRL)
replacement ....................................................................................................... 9-55
High mounted stop lamp replacement .............................................................. 9-60
Interior light replacement ................................................................................. 9-61
License plate lamp replacement ....................................................................... 9-60
Rear combination lamp replacement ................................................................ 9-56
Side repeater lamp replacement ....................................................................... 9-56
Lighting ............................................................................................................... 5-80
Exterior lights ................................................................................................... 5-80
M
Maintenance services ............................................................................................. 9-4
Owner maintenance precautions ........................................................................ 9-4
Owner’s responsibility ....................................................................................... 9-4
Manual climate control system ............................................................................ 5-99
Heating and air conditioning .......................................................................... 5-100
System maintenance ....................................................................................... 5-106
System operation ............................................................................................ 5-104
Manual Speed Limit Assist (MSLA) .................................................................. 7-57
Manual Speed Limit Assist Operation ........................................................... 7-57
Mirrors ................................................................................................................. 5-43
Inside rearview mirror ...................................................................................... 5-43
Side View mirrors ............................................................................................. 5-53
010_NX4a_HMA_INDEX.indd I-92021-03-02  5:44:48