2023 HYUNDAI TUCSON HYBRID check engine

01
1-5
Unleaded
Your new vehicle is designed to perform optimally with unleaded fuel having an octane
number((R+M)/2) of 87 (Research Octane Number 91) 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 10% 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

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-50
Starting the Vehicle
Vehicles with smart key system
1. Carry the smart key or leave it inside the vehicle.
2. Make sure the parking brake is firmly applied.
3. Make sure the shift button is in P (Park). With the shift button in N
(Neutral), you cannot start the vehicle.
4. Depress the brake pedal.
5. Press the Engine Start/Stop button. If the hybrid system starts, the “
”
indicator will come on.
Whether the engine is cold or warm, it
should be started without depressing
the accelerator.
After following the start procedures,
“
” indicator on the instrument
cluster will turn on. For more details,
please check chapter 6.
ECONOMICAL and SAFE OPERATION of
Hybrid system
• Drive smoothly. Accelerate at a moderate rate and maintain a steady
cruising speed. Do not make “jack-
rabbit” starts. Do not race between
stoplights.
Avoid heavy traffic whenever possible.
Always maintain a safe distance
from other vehicles so you can
avoid unnecessary braking. This also
reduces brake wear out.
• The regenerative brake generates energy when the vehicle decelerates.
• When the hybrid battery power is low, the hybrid system automatically
recharges the hybrid battery.
• When the engine is running with the shift button in N (Neutral), the hybrid
system cannot generate electricity.
The hybrid battery cannot recharge
with the shift button in N (Neutral).
Information
In the hybrid system, the engine
automatically runs and stops. When
the hybrid system operates, the “
”
indicator is illuminated.
In the following situation, the engine may
operate automatically.
- When the engine is ready to run
- When the hybrid battery is being
charged
- Depending on the temperature
condition of the hybrid battery
Special Features
Hybrid vehicles sound different than
gasoline engine vehicles. When the
hybrid system operates, you may
hear a sound from the hybrid battery
system under the floor. If you apply
the accelerator pedal rapidly, you may
hear an unconventional sound. When
you apply the brake pedal, you may
hear a sound from the regenerative
brake system. When the hybrid system
is turned off or on, you may hear a
sound in the engine compartment. If
you depress the brake pedal repeatedly
when the hybrid system is turned on,
you may hear a sound in the engine
compartment. None of these sounds
indicate a problem. These are normal
characteristics of hybrid vehicles.
If any of following occur, it’s a normal
condition if you hear a motor sound in
the engine compartment:
- After turning off the hybrid system, the brake pedal is released.
- When the hybrid system is turned off, the brake pedal is applied.
- When the driver door is opened.
DRIVING THE HYBRID VEHICLE

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-52
Hybrid System Gauge
Power gauge
„„4.2-Inch4.2-Inch
ONX4H040004ONX4H040004
„„10.25-inch10.25-inch
OCN7H040002OCN7H040002
The hybrid system gauge indicates
whether the current driving condition is
fuel efficient or not.
• CHARGE: Shows that the energy made by the
vehicle is being converted to electrical
energy. (Regenerated energy)
• ECO: Shows that the vehicle is being driven
in an Eco-friendly manner.
• POWER:
Shows that the vehicle is exceeding
the Eco-friendly range.
According to the hybrid system gauge
area, the “EV” indicator comes on or off. - “EV” indicator ON : Vehicle is driven using the electric motor or the
gasoline engine is stopped.
- “EV” indicator OFF : Vehicle is driven using the gasoline engine.
Hybrid battery SOC (State of Charge)
gauge
„„4.2-Inch4.2-Inch
ONX4HQ010016NONX4HQ010016N
„„10.25-inch10.25-inch
OCN7H040003OCN7H040003
This gauge indicates the remaining
hybrid battery power. If the SOC is
near the “L (Low)” level, the vehicle
automatically operates the engine to
charge the battery.
However, if the Service Indicator (
)
and Malfunction Indicator Lamp (MIL)
(
) turn on when the SOC gauge is
near the “L (Low)” level, have the vehicle
be checked by an authorized HYUNDAI
dealer.

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-58
Stop safely and check Hybrid system
OOSHQ019007LOOSHQ019007L
This message is displayed when there
is a problem with the hybrid control
system. The “
” indicator will blink
and a warning chime will sound for
approximately 10 seconds until the
problem is solved. Refrain from driving
when the warning message is displayed.
If this occurs, have the vehicle inspected
by an authorized HYUNDAI dealer.
Check Hybrid system. Do not start
engine
OOSHQ019008LOOSHQ019008L
This message is displayed when the
hybrid battery power (SOC) level is low.
A warning chime will sound until the
problem is solved. Refrain from driving
when the warning message is displayed.
If this occurs, have the vehicle inspected
by an authorized HYUNDAI dealer.
Stop safely and check power supply
OOSHQ019009LOOSHQ019009L
This message is displayed when a failure
occurs in the power supply system.
If this occurs, park the vehicle in a safe
location and tow your vehicle to the
nearest authorized HYUNDAI dealer and
have the vehicle inspected.
Check virtual engine sound system
OOSHQ019010LOOSHQ019010L
This message is displayed when there is
a problem with the Virtual Engine Sound
System (VESS).
If this occurs, have the vehicle inspected
by an authorized HYUNDAI dealer.

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-60
Unplug vehicle to start (Plug-in
hybrid vehicle)
OAEPHQ049829LOAEPHQ049829L
This message is displayed when you
start the engine without unplugging the
charging cable. Unplug the charging
cable, and then start the vehicle.
Charging stopped. Check the AC
charger
OOSEV048131LOOSEV048131L
• This warning message is displayed when charging is stopped for the
reasons below:
- There is a problem with the external AC charger
- The external AC charger stopped charging
- The charging cable is damaged
In this case, check whether there is
any problem with the external AC and
charging cable.
If the same problem occurs when
charging the vehicle with a normally
operating AC charger or genuine
HYUNDAI portable charger, have your
vehicle inspected by an authorized
HYUNDAI dealer.

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-70
„„Drive motor Drive motor *4*4
OTMHQ010015OTMHQ010015
*4 :
Located in the engine compartment
WARNING
• Do not disassemble the high voltage
motor connector. The high voltage
motor connector may contain
residual high voltage. Coming in
contact with high voltage may result
in death or serious injury.
• Your vehicle’s hybrid system should
only be inspected or repaired by an
authorized HYUNDAI dealer.
WARNING
• Do not disassemble or assemble
the high voltage battery system.
Doing so may result in electric shock,
causing death or serious injury.
• If you disassemble or assemble
hybrid system components
improperly, it may damage the
performance and reliability of your
vehicle.
• If electrolyte comes in contact
with your body, clothes or eyes,
immediately flush with a large
quantity of fresh tap water. Have
your eyes examined by a doctor as
soon as possible.
WARNING
Never assemble or disassemble the
high voltage battery system.
• If you assemble or disassemble the
high voltage battery system, the
durability and performance of the
vehicle may be damaged.
• When you want to check the high
voltage battery system, have the
vehicle inspected by an authorized
HYUNDAI dealer.
• Do not touch the high voltage
battery and high voltage cable
connected to motor (orange color).
Severe burns and electric shock may
occur. For your safety, do not touch
the cover of electronic components
and electronic cable. Do not remove
the cover of electronic components
and electronic cable. In particular,
never touch the high voltage battery
system when the hybrid system in
operation. It may result in death or
serious injury.
WARNING
• Never use the package modules
(high voltage battery, inverter and
converter) for any other purpose.
• Do not use an unauthorized battery
charger to charge the high voltage
battery. Doing so may result in death
or serious injury.
• Never locate the high voltage system
near or in a fire.
• Never drill into or strike the package
module. Otherwise, it may be
damaged. An electric shock may
occur, resulting in serious injury or
death.

02
2-19
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 0 10 20 30 40 50
(°F) -10 0 20 40 60 80 100 120
Smartstream G 1.6 T-GDi HEV/PHEV
0W-20 0W-20
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.

03
3-49
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 w
arning 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.
Have an authorized HYUNDAI dealer
inspect the SRS as soon as possible if
any of these conditions occur.