2023 HYUNDAI TUCSON HYBRID fuel type

Foreword/Starting your Hybrid/Plug-in hybrid vehicle1-6
Using Fuel Additives (except Detergent Fuel Additives)
Using fuel additives such as: - Silicone fuel additive
- Ferrocene (iron-based) fuel additive
- Other metallic-based fuel additives
may result in cylinder misfire, poor acceleration, engine stalling, damage to the
catalyst, or abnormal corrosion, and may cause damage to the engine resulting in a
reduction in the overall life of the powertrain.
- The Malfunction Indicator Lamp (MIL) may illuminate.
NOTICE
Damage to the fuel system or performance problem caused by the use of these fuels
may not be covered by your New Vehicle Limited Warranty.
Gasoline containing MMT
Some gasoline contains harmful manganese-based fuel additives such as MMT
(Methylcyclopentadienyl Manganese Tricarbonyl). HYUNDAI does not recommend the
use of gasoline containing MMT. This type of fuel can reduce vehicle performance and
affect your emission control system.
The malfunction indicator lamp on the cluster may come on.
Detergent Fuel Additives
HYUNDAI recommends that you use good quality gasolines treated with detergent
additives such as TOP TIER Detergent Gasoline, which help prevent deposit formation
in the engine. These gasolines will help the engine run cleaner and enha\
nce
performance of the Emission Control System. For more information on TOP TIER
Detergent Gasoline, please go to the website (www. toptiergas.com).
For customers who do not use TOP Tier Detergent Gasoline regularly, and have
problems starting or the engine does not run smoothly, detergent-based fuel additives
that you can purchase separately may be added to the gasoline. If TOP TIER Detergent
Gasoline is not available, one bottle of additive added to the fuel tank according to the
maintenance schedule is recommended (refer to the Maintenance Schedule in chapter
9).
Additives are available from your authorized HYUNDAI dealer along with information
on how to use them. Do not mix other additives.
Operation in foreign countries
If you are going to drive your vehicle in another country, be sure to:
• Observe all regulations regarding registration and insurance.
• Determine that acceptable fuel is available.

04
4-7
Hybrid battery SOC (State of Charge)
gauge
„4.2-Inch„10.25-inch
ONX4EH040008OCN7H040003
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, we recommend the
vehicle be checked by an authorized
HYUNDAI dealer.
NOTICE
Never try to start the vehicle if the fuel
tank is empty. In this condition, the
engine cannot charge the high voltage
battery of the hybrid system. If you
try to start the vehicle when the fuel
is empty, the high voltage battery will
become discharged and be damaged.
Plug-in hybrid mode indicator
„AUTO mode
‡Type A ‡Type B
ONX4EPHQ011013LONX4PHQ011014N
„CS mode
‡Type A ‡Type B
ONX4EPHQ011015LONX4PHQ011016N

[CD (Charge Depleting, Electric)
mode : The high-voltage (hybrid)
battery is used to drive the vehicle.

[ AUTO mode : CD mode and CS mode
are selected automatically depending
on road conditions.

[ CS (Charge Sustaining, Hybrid) mode :
The high-voltage (hybrid) battery and
gasoline engine is used to drive the
vehicle.
Information
Even when the battery charging rate
is high and driving in electric mode is
possible, engine may turn on in some areas
to protect the system.

Instrument Cluster4-42
3. Cluster
Items Explanation
Reset fuel
economy

[ At vehicle start

[ After refueling

[ Manually
To reset the fuel economy displayed.
Wiper/Lights DisplayTo activate or deactivate the Wiper/ Light mode.
When activated, the LCD display shows the selected Wiper/Light mode
whenever you changed the mode.
Traffic Signs To set the traffic signs displayed.
Cluster Voice Guidance Volume To adjust the cluster voice guidance volume.
Icy Road Warning To activate or deactivate the icy road warning.
Theme
Selection You can select the theme of the cluster.

[
Type A Cluster : Theme A / Theme B / Theme C

[ Type B Cluster : Link to Drive Mode /CLASSIC A/CLASSIC B/CLASSIC C/
CUBE
4. Lights
Items Explanation
Illumination T
o adjust the illumination level.

[ Level 1~20
One Touch
Turn Signal
[
Off : The one touch turn signal function will be deactivated.

[ 3, 5, 7 Flashes : The turn signal indicator will blink 3, 5, or 7 times when
the turn signal lever is moved slightly.
For more details, refer to “Lighting” in chapter 5.
Ambient Light
Brightness
(if equipped)
[
Off

[ Level 1/2/3/4
Ambient
Light Color
(if equipped)
[
Polar White/Moon White/Ice Blue/Ocean Blue/Jade Green/Orchid Green/
Freesia Yellow/ Sunrise Red/Aurora Purple/Lightening Violet
Headlight Delay To activate or deactivate the headlight delay function.
For more details, refer to "Lighting" in chapter 5.
High Beam Assist To activate or deactivate High Beam Assist function.
For more details, refer to "High Beam Assist (HBA)" in chapter 5.

à The information provided may differ depending on which functions are applicable
to your vehicle.

05
5-11
Battery replacement
If the Smart Key is not working properly,
try replacing the battery with a new one.
Battery Type: CR2032
To replace the battery:
ODN8059266ODN8059266
Battery Type: CR2032
To replace the battery:
1. Remove the mechanical key.
2. Use a slim tool or utility blade to pry open the cover of the smart key. Use
caution not to damage the smart key.
3. Remove the old battery and insert the new battery. Make sure the battery
position is correct.
4. Reinstall the rear cover of the smart key.
If you suspect your smart key might have
sustained some damage, or you feel
your smart key is not working correctly,
it is recommended that you contact an
authorized HYUNDAI dealer.
WARNING
THIS PRODUCT CONTAINS A BUTTON
BATTERY.
If swallowed, a lithium button battery
can cause severe or fatal injuries within
2 hours. Keep batteries out of reach of
children.
If you think batteries may have been
swallowed or placed inside any part
of the body, seek immediate medical
attention.
Information
An inappropriately disposed
battery can be harmful to
the environment and human
health. Dispose of the battery
according to your local law(s) or
regulations.
Immobilizer System (if
equipped)
The immobilizer system helps protect
your vehicle from theft. If an improperly
coded key (or other device) is used, the
engine’s fuel system is disabled.
When the Engine Start/Stop button
is pressed to the ON position, the
immobilizer system indicator should
come on briefly, then go off. If the
indicator starts to blink, the system does
not recognize the coding of the key.
Place the ignition switch to the LOCK/
OFF position, then place the ignition
switch to the ON position again.
The system may not recognize your
key’s coding if another immobilizer
key or other metal object (for example,
key chain) is near the key. The engine
may not start because the metal may
interrupt the transponder signal from
transmitting normally.
If the system repeatedly does not
recognize the coding of the key, it is
recommended that you contact your
HYUNDAI dealer.
Do not attempt to alter this system
or add other devices to it. Electrical
problems could result that may make
your vehicle inoperable.

05
5-19
Vehicle information Display
The digital key application displays
the vehicle information such as
driving or door conditions through the
communication with the vehicle.
• How to check : Select the vehicle what you want to check and touch
the vehicle image, then vehicle
information display page will be
shown.
• Contents : accumulated odometer, latest fuel economy, driving range,
fuel remaining, tire pressure, doors
lock/unlock status and last data
updated time.

à Note that displayed vehicle data may
be slightly different from the current
vehicle condition

à For more information, please refer to
the ‘Tutorial’ on your Digital key app. Getting a New Smartphone / Changing
Y
our Smartphone / App Deletion
If you change your smartphone or delete
the Hyundai Digital K
ey App, please refer
to the following to set up your Digital
Key:
Using Digital Key on a New Smartphone
If you change to a new smartphone,
the registered digital key app on your
previous smartphone may not be used.
Refer to the following procedure to set
up digital key on your new phone.
1. Install the digital key application and log in.
2. If you are the owner, retry the Digital key save process.
3. If you are using a shared digital key, you will need to obtain a new shared
digital key from the owner.
App delete & reinstall/ Delete App data
You can re-download the digital key
from server in these cases as follow
procedure.
1. Reinstall the application and log in.
2. Input the PIN number for user verification.
3. If PIN is correct, digital key data will be re-downloaded to your
smartphone and you can use it
without any further registration or
sharing.
Smartphone operability with Digital Key
The digital key application may not
be available to old type smartphones.
Please check the available smartphone
models with your dealer. NFC antenna
position on the smartphone can be
confirmed on each smartphone’s manual
or contact to customer service center of
the smartphone manufacture.

05
5-79
• 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, 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.
Fuel Filler Door (Plug-in hybrid
vehicle)
Opening the fuel filler door
ONX4EPH051001LONX4EPH051001L
1. Turn the vehicle completely OFF. Do
not leave the vehicle with the ignition
in the ON position or with the engine
running. Doing so may cause the
check engine light to illuminate.
2. Push the fuel filler door open button.
NOTICE
If the fuel filler door does not open
because ice has formed around it, tap
lightly or push on the lid to break the
ice and release the lid. Do not pry on the
lid. If necessary, spray around the lid
with an approved de-icer fluid (do not
use radiator anti-freeze) or move the
vehicle to a warm place and allow the
ice to melt.

05
5-81
WARNING
• Before refueling, be sure to check
what type of fuel is used for your
vehicle. If you put diesel fuel into
a gasoline-powered vehicle or
gasoline into a diesel-powered
vehicle, it may affect the fuel system
and cause serious damage to the
vehicle.
• Add fuel into the fuel tank within
20 minutes after opening the fuel
filler door. After 20 minutes, the fuel
tank may shut off, causing fuel to
overflow. In this case, re-press the
fuel filler door opening button.
• Do not leave the fuel filler door
opened for an extended period of
time. It may discharge the battery.
• Close the fuel filler door after fueling
the vehicle. If you start the vehicle
with the fuel filler door opened,
the message, “Check fuel door”,
illuminates on the LCD display.
• Avoid refueling the vehicle while
charging the (high-voltage) hybrid
battery. It may cause a fire or an
explosion due to static electricity.
Closing the fuel filler door
1. To install the cap, turn it clockwise
until it “clicks” once. This indicates
that the cap is securely tightened.
2. Close the fuel filler lid and push it in lightly making sure that it is securely
closed.
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.

Convenience Features5-82
• 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.
• 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, 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.
WARNING
In case of using EV drive mode for a
certain time without running engine,
EMM (Engine Maintenance Mode) will
automatically activate by the system to
protect the fuel system and the engine.
Therefore, even though if it is possible
to use EV drive mode with enough
battery power, the engine may run by
the system to protect fuel system and
the engine. If you leave the fuel without
refueling or using for over 6 months, the
remained fuel in the fuel system may
be deteriorated. From this, corrosion
or blocking problem may occur. It is
recommended using minimum 40 % of
remained fuel at least every 6 months
by selecting Hybrid (CS)mode and
refuel the vehicle with new fuel.