check engine HYUNDAI TUCSON 2022 Owners Manual

01
1-5
Gasoline engine
Unleaded
Your new vehicle is designed to use only unleaded fuel having an octane number
((R+M)/2) of 91 (Research Octane Number 95) or higher. (Do not use methanol blended
fuels)
Your new vehicle is designed to obtain maximum performance with UNLEADED FUEL,
as well as minimize exhaust emissions and spark plug fouling.
NOTICE
To prevent damage to the engine and engine components, never add any fuel
system cleaning agents to the fuel tank other than what has been specified.
Consult an authorized HYUNDAI dealer for additional information.
WARNING
• Do not “top off” after the nozzle automatically shuts off when refueling.
• Always check that the fuel cap is installed securely to prevent fuel spillage in the
event of an accident.
Gasoline containing alcohol and methanol
Gasohol, a mixture of gasoline and ethanol (also known as grain alcohol) are being
marketed along with or instead of leaded or unleaded gasoline. For example, “E15” is a
gasohol comprised of 15% ethanol and 85% gasoline.
Do not use gasohol containing more than 15% ethanol, and do not use gasoline or
gasohol containing any methanol. Either of these fuels may cause drivability problems
and damage to the fuel system, engine control system and emission control system.
Discontinue using gasohol of any kind if drivability problems occur.
“E85” fuel is an alternative fuel comprised of 85 percent ethanol and 15 percent
gasoline, and is manufactured exclusively for use in Flexible Fuel Vehicles. “E85” is
not compatible with your vehicle. Use of “E85” may result in poor engine performance
and damage to your vehicle’s engine and fuel system. HYUNDAI recommends that
customers do not use fuel with an ethanol content exceeding 15 percent.
NOTICE
To prevent damage to your vehicle’s engine and fuel system:
• Never use gasohol which contains methanol.
• Never use gasohol containing more than 15% ethanol.
• Never use leaded fuel or leaded gasohol.
• Never use “E85” fuel.
Your New Vehicle Limited Warranty does not cover damage to the fuel system or any
performance problems caused by the use of “E85” fuel.
FUEL REQUIREMENTS

02
2-15
Recommended SAE viscosity number
CAUTION
Always be sure to clean the area around any filler plug, drain plug, or dipstick before
checking or draining any lubricant. This is especially important in dusty or sandy
areas and when the vehicle is used on unpaved roads. Cleaning the plug and dipstick
areas will prevent dirt and grit from entering the engine and other mechanisms that
could be damaged.
Engine oil viscosity (thickness) has an effect on fuel economy and cold weather
operating (engine start and engine oil flowability). Lower viscosity engine oils can
provide better fuel economy and cold weather performance, however, higher viscosity
engine oils are required for satisfactory lubrication in hot weather. Using oils of any
viscosity other than those recommended could result in engine damage.
When choosing an oil, consider the range of temperature your vehicle will be operated
in before the next oil change. Proceed to select the recommended oil viscosity from
the chart.
Temperature Range for SAE Viscosity Numbers
Temperature °C
-30-20-10 010 20 30 4050
(°F) -10020 40 60 80 100120
Engine Oil *
1Smartstream
G2.5 GDI0W-20 0W-20
*1 : Requires grade engine oil. If a lower grade
engine oil (mineral oil including Semi-synthetic) is used, then the engine oil and engine
oil filter must be replaced as indicated for severe maintenance condition.
An engine oil displaying this API Certification Mark conforms to the international Lubricant Specification Advisory Committee
(ILSAC). It is recommended to only use engine oils that uphold
this API Certification Mark.

Seats & Safety System
3-22
Rear Occupant Alert (ROA) (if
equipped)
Rear Occupant Alert is provided to
prevent a driver from leaving a vehicle
with a rear passenger left in the vehicle.
System setting
To use Rear Occupant Alert, it must be
enabled from the Settings menu in the
infotainment system screen. Select:
-Setup → Vehicle Settings → Convenience → Rear Occupant Alert
For detailed information, scan the QR
code in the separately supplied simple
manual.
System operation
• First alert
When you turn off the engine and
open the driver’s door after opening
and closing the rear door or liftgate,
the ‘Check rear seats’ warning
message appears on the cluster.
• Second alert
After the first alert, the second alert
operates when any movement is
detected in the vehicle after the
driver’s door is closed and all the
doors are locked. The horn will sound
for approximately 25 seconds. If
the system continues to detect a
movement, the alert operates up to 8
times.
Unlock the doors with the smart key
to stop the alert.
• The system detects movement in the
vehicle for 8 hours after the door is
locked.
• The second alert is activated only after
the prior activation of the first alert.
System precautions
• Make sure that all the windows are
closed. If the window is open, the
alert may operate by the sensor
detecting an unintended movement
(e.g. wind or bugs).
• „„Cluster„„Steering wheel
OTM048165LOCN7050079
If you do not want to use Rear
Occupant Alert, press the OK button
on the steering wheel when the first
alert is displayed on the cluster. Doing
so will deactivate the second alert one
time.
• An alert can occur if there is an impact
on the roof.
• If boxes or objects are stacked in the
vehicle, the system may not detect
the boxes or objects. Or, the alert may
operate if the boxes or objects fall off.
• The sensor may not operate normally
if the sensor is blocked with foreign
substances.
• The alert may operate if movement
in the driver or passenger seat is
detected.
• The alert may operate with the doors
locked due to car wash or surrounding
vibration or noise.
• If the vehicle is started remotely (if
equipped with Remote Start), inside
movement detection will stop.
• When the scheduled ventilation
function is in operation, inside
movement detection will stop.

03
3-51
How does the air bags system
operate?
ONX4030055
The SRS consists of the following
components:
(1) Driver's front air bag module
(2) Passenger's front air bag module
(3) Side air bag modules
(4) Curtain air bag modules
(5) Retractor pre-tensioner
(6) Air bag warning light
(7) SRS control module (SRSCM)/
Rollover sensor
(8) Front impact sensors
(9) Side impact sensors
(10) Side pressure sensors
(11) Emergency fastening device system
(12) Occupant classification system
(13) Seat belt buckle sensor
The SRSCM continually monitors all SRS
components while the ignition switch
is ON to determine if a crash impact
is severe enough to require air bag
deployment or pre-tensioner seat belt
deployment.
SRS warning light
The SRS (Supplemental Restraint System)
air bag warning light on the instrument
panel displays the air bag symbol
depicted in the illustration. The system
checks the air bag electrical system for
malfunctions. The light indicates that
there is a potential problem with your
air bag system, which could include
your side and/or curtain air bags used
for rollover protection (if equipped with
rollover sensor).
WARNING
If your SRS malfunctions, the air bag
may not inflate properly during an
accident increasing the risk of serious
injury or death.
If any of the following conditions occur,
your SRS is malfunctioning:
• The light does not turn on for
approximately three to six seconds
when the Engine Start/Stop button is
in the ON position.
• The light stays on after illuminating
for approximately three to six
seconds.
• The light comes on while the vehicle
is in motion.
• The light blinks when the engine is
running.
We recommend that an authorized
HYUNDAI dealer inspect the SRS
as soon as possible if any of these
conditions occur.

AUTO STOP indicator light ........................................................................\
..............4-20
Turn signal indicator light ........................................................................\
.................4-21
High beam indicator light ........................................................................\
................4-21
High Beam Assist indicator light ........................................................................\
......4-21
Cruise Indicator Light ........................................................................\
.......................4-21
SPORT Mode Indicator Light ........................................................................\
...........4-22
SMART Mode Indicator Light ........................................................................\
..........4-22
Master warning light ........................................................................\
........................4-22
LCD display messages for vehicles equipped with Smart Key ...............................4-23
Shift to P ........................................................................\
...........................................4-23
Low key battery ........................................................................\
................................4-23
Press START button while turning wheel ...............................................................4-23
Check steering wheel lock system ........................................................................\
.4-23
Press brake pedal to start engine ........................................................................\
..4-23
Key not in vehicle ........................................................................\
.............................4-23
Key not detected ........................................................................\
..............................4-23
Press START button again ........................................................................\
..............4-23
Press START button with key ........................................................................\
..........4-24
Check BRAKE SWITCH fuse ........................................................................\
...........4-24
Shift to P or N to start engine ........................................................................\
.........4-24
Battery discharging due to external electrical devices .........................................4-24
Door, Hood, Liftgate open indicator
.......................................................................4-25
Sunroof open indicator ........................................................................\
....................4-25
Low tire pressure ........................................................................\
.............................4-25
Lights ........................................................................\
................................................4-26
Wiper ........................................................................\
................................................4-26
Low washer fluid ........................................................................\
..............................4-26
Low fuel ........................................................................\
............................................4-26
Low engine oil ........................................................................\
..................................4-26
Engine overheated / Engine has overheated .........................................................4-27
Check exhaust system ........................................................................\
.....................4-27
Check headlight ........................................................................\
...............................4-27
Check turn signal ........................................................................\
.............................4-27
Check headlamp LED ........................................................................\
......................4-27
Check Forward Collision-Avoidance Assist system ...............................................4-28
Check Lane Keeping Assist system ........................................................................\
4-28
Check Blind-Spot Collision Warning system ..........................................................4-28
Check Driver Attention Warning system
................................................................4-28
Check High Beam Assist system ........................................................................\
.....4-28
Check Smart Cruise Control system .......................................................................4-28
4

Instrument cluster
4-10
Parking brake warning light
This warning light illuminates:
• When you set the ignition switch or
the Engine Start/Stop button to the
ON position.
-The parking brake & brake fluid
warning light illuminates for about 3
seconds and will then turn off once
the parking brake is released.
• Whenever the parking brake is
applied.
• Whenever the brake fluid level in the
reservoir is low.
-If the warning light illuminates
with the parking brake released, it
indicates the brake fluid level in the
reservoir is low.
If the brake fluid level in the reservoir is
low:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. With the engine stopped, check the
brake fluid level immediately and add
fluid as required (For more details,
refer to “Brake Fluid” section in
chapter 9). After adding brake fluid,
check all brake components for fluid
leaks. If a brake fluid leak is found, or
if the warning light remains on, or if
the brakes do not operate properly, do
not drive the vehicle. We recommend
that you have the vehicle inspected by
an authorized HYUNDAI dealer. Dual-diagonal braking system
Your vehicle is equipped with dual-
diagonal braking system. This means you
still have braking on two wheels even if
one of the dual systems should fail.
With only one of the dual systems
working, more than normal pedal travel
and greater pedal pressure is required to
stop the vehicle.
Also, the vehicle will not stop in as short
a distance with only a portion of the
brake system working.
If you experience a malfunction with
the brake system while driving, attempt
to slow your vehicle by coasting or
by using engine braking. You may be
able to reduce your vehicle speed by
manually downshifting to a lower gear.
Use Manual Shift Mode using either the
gear shift lever or the paddle shifters (if
equipped) to shift to a lower gear.
WARNING
Parking Brake & Brake Fluid warning
light
Driving the vehicle with a warning light
ON is dangerous. If the Parking Brake
warning light illuminates with the
parking brake released, it indicates that
the brake fluid level is low.
If this occurs, we recommend that
you have the vehicle inspected by an
authorized HYUNDAI dealer.

Instrument cluster
4-12
Electric Power Steering (EPS)
warning light
This warning light illuminates:
• When you set the ignition switch or
the Engine Start/Stop button to the
ON position.
-The electric power steering warning
light illuminates for about 3 seconds
and then goes off.
• Whenever there is a malfunction with
the electric power steering.
If the EPS warning light remains
illuminated while driving, have the
vehicle inspected by an authorized
HYUNDAI dealer.
Charging system warning
light
This warning light illuminates:
When there is a malfunction with either
the alternator or electrical charging
system.
If there is a malfunction with either the
alternator or electrical charging system:
1. Drive carefully to the nearest safe
location and stop your vehicle.
2. Turn the engine off and check the
alternator drive belt for looseness or
breakage.
If the belt is adjusted properly, there
may be a problem in the electrical
charging system.
If the Charging system warning light
remains illuminated while driving,
have the vehicle inspected by an
authorized HYUNDAI dealer.
Engine oil pressure warning
light
This warning light illuminates:
When the engine oil pressure is low.
If the engine oil pressure is low:
• Drive carefully to the nearest safe
location and stop your vehicle.
• Turn the engine off and check the
engine oil level (For more details, refer
to “Engine Oil” section in chapter 9). If
the level is low, add oil as required.
If the warning light remains on after
adding oil or if oil is not available, have
the vehicle inspected by an authorized
HYUNDAI dealer.
(Continued driving with the warning
light on may cause engine failure.)
Information
When engine oil pressure decreases due to
insufficient engine oil, etc., the Engine Oil
Pressure warning light will illuminate. In
addition, the enhanced engine protection
system which limits engine power will
be activated. If the engine oil pressure is
restored, the Engine Oil Pressure warning
light and the enhanced engine protection
system will turn off. However, for gasoline
2.5 GDI engine, when the engine oil
pressure is restored, the warning light and
the enhanced engine protection system will
turn off after the engine is restarted.
Information
When engine oil pressure decreases due to
insufficient engine oil, etc., the Engine Oil
Pressure warning light will illuminate. In
addition, the enhanced engine protection
system which limits engine power will
be activated. If the engine oil pressure is
restored, the Engine Oil Pressure warning
light and the enhanced engine protection
system will turn off.

04
4-13
NOTICE
• If the engine does not stop
immediately after the Engine Oil
Pressure warning light is illuminated,
severe damage could result.
• If the warning light stays on while the
engine is running, it indicates that
there may be serious engine damage
or malfunction. In this case:
1. Stop the vehicle as soon as it is
safe to do so.
2. Turn off the engine and check the
oil level. If the oil level is low, fill
the engine oil to the proper level.
3. Start the engine again. If the
warning light stays on after the
engine is started, turn the engine
off immediately. If this occurs,
we recommend that you have
the vehicle inspected by an
authorized HYUNDAI dealer.
Low fuel level warning light
This warning light illuminates:
When the fuel tank is nearly empty.
Add fuel as soon as possible.
NOTICE
Driving with the Low Fuel Level
warning light on or with the fuel level
below "E" or "- - -" on the Distance to
Empty indicator can cause the engine
to misfire and damage the catalytic
converter.
Malfunction Indicator Lamp
(MIL)
This indicator light illuminates:
• When you set the ignition switch or
the Engine Start/Stop button to the
ON position.
-The malfunction indicator light
illuminates for about 3 seconds and
then goes off.
• Whenever there is a malfunction with
either the emission control system or
the engine or the vehicle powertrain.
If the MIL warning light remains
illuminated while driving, have the
vehicle inspected by an authorized
HYUNDAI dealer.
• If enhanced engine protection system
becomes activated due to lack of
engine oil, engine power will be
limited. If such condition continues
repeatedly, The Malfunction Indicator
Lamp will illuminate.

Instrument cluster
4-14
NOTICE
• Driving with the Malfunction
Indicator Lamp (MIL) on may cause
damage to the emission control
system which could affect drivability
and/or fuel economy.
• If the enhanced engine protection
system becomes activated due to
lack of engine oil, engine power
will be limited. If such condition
continues repeatedly, the
Malfunction Indicator Lamp will
illuminate.
NOTICE
If the Malfunction Indicator Lamp
(MIL) illuminates, potential catalytic
converter damage is possible which
could result in loss of engine power.
If this occurs, we recommend that
you have the vehicle inspected by an
authorized HYUNDAI dealer as soon as
possible.
Exhaust system (GPF)
warning light (for gasoline
engine, if equipped)
• This warning light illuminates, when
accumulated soot reaches a certain
amount.
• When this warning light illuminates, it
may turn off after driving the vehicle
at more than 50 mph (80km/h) for
about 30 minutes (above 3rd gear
with 1500 ~ 4000 engine RPM).
If this warning light blinks in spite
of the procedure (at this time LCD
warning message will be displayed),
we recommend that you have the
GPF system checked by an authorized
HYUNDAI dealer.
NOTICE
If you continue to drive with the GPF
warning light blinking for a long time,
the GPF system can be damaged and
fuel consumption can worsen.

04
4-23
LCD Display Messages for
Vehicles Equipped with Smart
Key
Shift to P
This message is displayed if you try to
turn off the vehicle without the gear in
the P (Park) position.
If this occurs, the Engine Start/Stop
button turns to the ACC position.
Low key battery
When the Engine Start/Stop button
is pressed to turn OFF the engine,
this message may be displayed. This
message indicates that the internal
battery of the Smart Key is low. Consider
replacing the Smart Key internal battery.
Press START button while turning
wheel
This message is displayed if the steering
wheel does not unlock normally when
the Engine Start/Stop button is pressed.
You should press the Engine Start/Stop
button while turning the steering wheel
right and left.
Check steering wheel lock system
This message is displayed if the steering
wheel does not lock normally while the
Engine Start/Stop button is pressed to
the OFF position.
Press brake pedal to start engine
This message is displayed if the Engine
Start/Stop button changes to the ACC
position twice by pressing the button
repeatedly without depressing the brake
pedal.
You can start the vehicle by depressing
the brake pedal and then pressing the
Engine Start/Stop button.
Key not in vehicle
This message is displayed if the smart
key is not in the vehicle when you leave
the vehicle with the Engine Start/Stop
button in the ON or Start position.
Always turn off the engine before leaving
your vehicle.
Key not detected
This message is displayed if the smart
key is not detected when you press the
Engine Start/Stop button.
Press START button again
This message is displayed if you were
unable to start the vehicle when the
Engine Start/Stop button was pressed.
If this occurs, attempt to start the engine
by pressing the Engine Start/ Stop button
again.
If the warning message appears each
time you press the Engine Start/Stop
button, we recommend that you have
the vehicle inspected by an authorized
HYUNDAI dealer.