Hyundai Nexo (2024 year). Manual in english

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All information in this Owner's Manual is current at the time of pub-
lication. However, HYUNDAI reserves the right to make changes at
any time so that our policy of continual product improvement may be
carried out.

This manual applies to all HYUNDAI models and includes descrip-
tions and explanations of optional as well as standard equipment.
As a result, you may find material in this manual that does not apply
to your specific vehicle.

Your HYUNDAI should not be modified in any way.
Such modifications may adversely affect the per-
formance, safety or durability of your HYUNDAI
and may, in addition, violate conditions of the limit-
ed warranties covering the vehicle. Certain modifi-
cations may also be in violation of regulations
established by the U.S.

Department of

Transportation and other federal or state agencies.

Your vehicle is equipped with a Tire Pressure
Monitoring System, Passenger Occupant
Classification System and other CAN bus sys-
tems. It is possible for an improperly
installed/adjusted high powered two-way radio to
adversely affect electronic systems. For this rea-
son, we recommend that you carefully follow the
radio manufacturer’s instructions if you choose to
install one of these devices.

CAUTION: MODIFICATIONS TO

YOUR HYUNDAI

TWO-WAY RADIO INSTALLATION

This manual includes information titled as DAN-
GER, WARNING, CAUTION and NOTICE.
These titles indicate the following:

SAFETY AND VEHICLE DAMAGE

WARNING

DANGER indicates a hazardous situation
which, if not avoided, will result in death or
serious injury.

DANGER

WARNING indicates a hazardous situation
which, if not avoided, could result in death
or serious injury.

CAUTION indicates a hazardous situation
which, if not avoided, could result in minor or
moderate injury.

CAUTION

NOTICE indicates a situation which, if not
avoided, could result in vehicle damage.

NOTICE

WARNING

Your Hyundai vehicle may be equipped with technologies and services that use information collected,
generated, recorded or stored by the vehicle. Hyundai has created a Vehicle Owner Privacy Policy to explain
how these technologies and services collect use and share this information.

You may read our Vehicle Owner Privacy Policy on the Hyundaiusa.com website at:
https://www.hyundaiusa.com/owner-privacy-policy.aspx
If you would like to receive a hard copy of our Vehicle Owner Privacy Policy, please contact the Hyundai
Customer Care Center at:

Hyundai Customer Care
P.O. Box 20850
Fountain Valley, CA 92728
800-633-5151
consumeraffairs@hmausa.com

Hyundai’s Customer Care Center representatives are available Monday through Friday,
between the hours of 6:00 AM and 5:00 PM PST and Saturday between 6:30 AM and 3:00 PM PST (English).
For Customer Care assistance in Spanish or Korean, representatives are available Monday through Friday
between 6:30 AM and 3:00 PM PST.

HYUNDAI VEHICLE OWNER PRIVACY POLICY

INTRODUCTION

Congratulations, and thank you for choosing HYUNDAI. We are pleased to welcome you to the growing number of dis-
cerning people who drive HYUNDAIs. We are very proud of the advanced engineering and high-quality construction of
each HYUNDAI we build.
Your Owner's Manual will introduce you to the features and operation of your new HYUNDAI. To become familiar with
your new HYUNDAI, so that you can fully enjoy it, read this Owner's Manual carefully before driving your new vehicle.
This manual contains important safety information and instructions intended to familiarize you with your vehicle's con-
trols and safety features so you can safely operate your vehicle.
This manual also contains information on maintenance designed to enhance safe operation of the vehicle. It is recom-
mended that all service and maintenance on your car be performed by an authorized HYUNDAI dealer. HYUNDAI deal-
ers are prepared to provide high-quality service, maintenance and any other assistance that may be required.
This Owner's Manual should be considered a permanent part of your vehicle, and should be kept in the vehicle so you
can refer to it at any time. The manual should stay with the vehicle if you sell it to provide the next owner with impor-
tant operating, safety and maintenance information.

HYUNDAI MOTOR AMERICA

Severe vehicle damage may result from the use of poor quality lubricants that do not meet HYUNDAI spec-
ifications. You must always use high quality lubricants that meet the specifications listed on Page 8-6 in the
Vehicle Specifications section of the Owner's Manual.

CAUTION

1. What are HYUNDAI Genuine

Parts?

HYUNDAI Genuine Parts are the
same parts used by HYUNDAI
Motor Company to manufacture
vehicles. They are designed and
tested for the optimum safety, per-
formance, and reliability for our
customers.

2. Why should you use genuine

parts?

HYUNDAI Genuine Parts are
engineered and built to meet rigid
manufacturing requirements.
Damage caused by using imita-
tion, counterfeit or used salvage
parts is not covered under the
HYUNDAI New Vehicle Limited
Warranty or any other HYUNDAI
warranty.
In addition, any damage to or fail-
ure of HYUNDAI Genuine Parts
caused by the installation or fail-
ure of an imitation, counterfeit or
used salvage part is not covered
by any HYUNDAI Warranty.

3. How can you tell if you are pur-

chasing HYUNDAI Genuine
Parts?

Look for the HYUNDAI Genuine
Parts Logo on the package (see
below).
HYUNDAI Genuine Parts export-
ed to the U.S. are packaged with
labels written only in English.
HYUNDAI Genuine Parts are only
sold through authorized HYUNDAI
Dealerships.

GUIDE TO HYUNDAI GENUINE PARTS

Introduction

We want to help you get the greatest
possible driving pleasure from your
vehicle. Your Owner's Manual can
assist you in many ways. To gain an
overview of the contents of your
Owner's Manual, use the Table of
Contents in the front of the manual.
The first page of each Chapter
includes a detailed Table of Contents
of the topics in that Chapter.
To quickly locate information about
your vehicle, use the Index in the
back of the manual. It is an alphabet-
ical list of what is in this manual and
the page number where it can be
found.
For your convenience, we have
incorporated tabs on the right-hand
page edges. These tabs are coded
with the Chapter titles to assist you
with navigating through the manual.

Your safety, and the safety of others,
is very important. This Owner's
Manual provides you with many safe-
ty precautions and operating proce-
dures. This information alerts you to
potential hazards that may hurt you
or others, as well as damage to your
vehicle.
Safety messages found on vehicle
labels and in this manual describe
these hazards and what to do to
avoid or reduce the risks.
Warnings and instructions contained
in this manual are for your safety.
Failure to follow safety warnings and
instructions can lead to serious injury
or death.

Throughout this manual DANGER,
WARNING, CAUTION, NOTICE and
the SAFETY ALERT SYMBOL will
be used.

This is the safety alert sym-
bol. It is used to alert you to
potential physical injury haz-
ards. Obey all safety mes-
sages that follow this symbol
to avoid possible injury or
death. The safety alert sym-
bol precedes the signal words
DANGER, WARNING and
CAUTION.

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DANGER indicates a hazardous
situation which, if not avoided,
will result in death or serious
injury.

DANGER

WARNING indicates a hazardous
situation which, if not avoided,
could result in death or serious
injury.

WARNING

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Introduction

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UIIR

NOTICE indicates a situation
which, if not avoided, could result
in vehicle damage.

For the optimal vehicle performance,
we recommend you to use the hydro-
gen fuel which complies with your
local regulatory agency standard
(purity, maximum concentration of
impurities, etc.).

• This vehicle should not be modi-

fied. Modification of your vehicle
could affect its performance, safety
or durability and may even violate
governmental safety and emis-
sions regulations.
In addition, damage or perform-
ance problems resulting from any
modification may not be covered
under warranty.

• If you use unauthorized electronic

devices, it may cause the vehicle to
operate abnormally, wire damage,
battery discharge and fire. For your
safety, do not use unauthorized
electronic devices.

NOTICE

CAUTION indicates a hazardous
situation which, if not avoided,
could result in minor or moder-
ate injury.

CAUTION

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Introduction

This vehicle is equipped with an
event data recorder (EDR). The
main purpose of an EDR is to
record, in certain crash or near
crash-like situations, such as an
air bag deployment or hitting a
road obstacle, data that will assist
in understanding how a vehicle’s
systems performed. The EDR is
designed to record data related to
vehicle dynamics and safety sys-
tems for a short period of time,
typically 30 seconds or less. The
EDR in this vehicle is designed to
record such data as:
• How various systems in your

vehicle were operating;

• Whether or not the driver and

passenger safety belts were
buckled/fastened;

• How far (if at all) the driver was

depressing the accelerator
and/or brake pedal; and,

• How fast the vehicle was travel-

ing.

These data can help provide a bet-
ter understanding of the circum-
stances in which crashes and
injuries occur. NOTE: EDR data
are recorded by your vehicle only
if a non-trivial crash situation
occurs; no data are recorded by
the EDR under normal driving
conditions and no personal data
(e.g., name, gender, age, and
crash location) are recorded.
However, other parties, such as
law enforcement, could combine
the EDR data with the type of per-
sonally identifying data routinely
acquired during a crash investiga-
tion.
To read data recorded by an EDR,
special equipment is required, and
access to the vehicle or the EDR is
needed. In addition to the vehicle
manufacturer, other parties, such
as law enforcement, that have the
special equipment, can read the
information if they have access to
the vehicle or the EDR.

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A R

CALIFORNIA PROPOSITION 65
WARNING

Items contained in motor vehi-
cles or emitted from them are
known to the State of California
to cause cancer and birth
defects or reproductive harm.
These include:

•

Gasoline and its vapors

•

Engine exhaust

•

Used engine oil

•

Interior passenger compart-
ment components and materi-
als

•

Component parts which are
subject to heat and wear

In addition, battery posts, termi-
nals and related accessories
contain lead, lead compounds
and other chemicals known to
the State of California to cause
cancer and reproductive harm.

WARNING

Your Vehicle at a Glance

Safety System of Your Vehicle

Convenience Features of Your Vehicle

Infotainment System

Driving Your Vehicle

What to Do in an Emergency

Maintenance

Specifications, Consumer Information and
Reporting Safety Defects

Index

TABLE OF CONTENTS

Introduction of FCEV .........................................................H2
The components of FCEV..................................................H3

Fuel cell stack ...................................................................................H4
FCEV system module .......................................................................H4
High pressure hydrogen storage tanks......................................H5
Battery system..................................................................................H5

Features of FCEV .............................................................H10

How to Start the Vehicle..............................................................H10
How to Stop the Vehicle ..............................................................H11
Virtual Engine Sound System......................................................H11
Fuel filler door ................................................................................H12
Warning and indicator lights .......................................................H15
LCD Display Messages ..................................................................H17
FCEV mode.......................................................................................H23
When the high voltage battery is weak...................................H27
If the 12 volt battery is discharged...........................................H27
Emergency while driving ..............................................................H28

Customer Q&A Guide .......................................................H32

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FCEV : Fuel Cell Electric Vehicle

An FCEV is an electric vehicle which is driven using the electricity generated from the fuel cell.
The power system of the FCEV is composed of the following:
- The fuel cell stack which generates the electricity
- The device which controls the heat generated after supplying the hydrogen and air for chemical reaction of the stack
- The inverter which converts the DC created from the stack to AC
- The traction motor which generates propelling power using the supplied AC
- Air processing system
- Fuel processing system

The hydrogen tanks that stores the hydrogen supplied to the fuel cell can be fueled at 70 MPa.

❈

FCEV is Fuel Cell Electric Vehicle

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F F

OFEQ018001N/OFEQ018002/OFEQ018003/OFEQ018004/OFEQ018005

(

1) Fuel Cell system

(2) Traction motor system

(3) Hydrogen Tanks

(4) Battery System

1. Fuel cell stack

A fuel cell stack is a device that con-
verts the chemical energy into elec-
tricity thorough a chemical reaction
with hydrogen and oxygen. Fuel cell
is different from battery in that it
requires hydrogen and oxygen con-
stantly in order to operate. And it can
produce electricity continually for as
long as hydrogen and oxygen are
supplied. A fuel cell stack is com-
posed of many unit cells to obtain the
desired power for a vehicle.

2. FCEV powertrain

1. High voltage junction box
2. Fuel cell stack
3. Traction motor

4. Reduction gear
5. Air compressor

The main components of FCEV are
Fuel cell stack, air processing sys-
tem, fuel processing system, thermal
management system, hydrogen stor-
age tanks, high voltage battery, DC-
DC converter, inverter and traction
motor, gear differential unit.
The Air compressor supplies air to fuel
cell system and the hydrogen storage
tanks supplies hydrogen fuel to fuel
cell system. Then the electric energy
comes from the fuel cell system.
The electric energy delivered to the
motor inverter. The energy finally
moves to motor operating.

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OFEQ018006N

OFEQ018007N

OFEQ018008

If you assemble or disassemble
the stack and fuel cell system,
hydrogen may leak resulting in
fire and this may lead to acci-
dents. Never assemble or disas-
semble the stack and fuel cell
system.

WARNING

3. High pressure hydrogen

storage tanks

Compressed hydrogen tank system
is composed of three tanks which
are filled with hydrogen gas in a gas
station. Each tank is made of plastic
liner for blocking the hydrogen per-
meation and carbon fiber layer sus-
tain high pressures.
There are main parts to supply
hydrogen stably and to enable safety
such as magnetic valves, pressure
regulator, pressure sensors, pres-
sure relief valve, excess flow valve
and so on. The hydrogen in the tanks
comes into the pressure regulator
which has a pressure sensor.

4. Battery system

A 12 V battery integrated with the low
and high voltage batteries is installed
in the vehicle. The battery supplies
the electricity required for driving the
vehicle and stores the energy gener-
ated from the regenerative braking.
When the vehicle accelerates the
auxiliary power of the fuel cell sup-
plies the energy. The vehicle can
drive about 2 miles (3 km) in EV
mode until the high voltage battery is
discharged.

High voltage cables

The electric energy which is generat-
ed from fuel cell system or high volt-
age battery module is distributed to
the various components. Most of the
cables are located in the inside or bot-
tom of the components. These cables
use orange colored cover to distin-
guish from other lines. It is required to
handle the cables carefully with isola-
tion gloves.

OFEQ018004

OFEQ018005

Disconnecting negative (-)
battery cable

1. Fold up the luggage board of the

liftgate.

2. Disconnect the negative (-) con-

nector.

Hydrogen gas detection
sensors

They detect a hydrogen leak and
informs a warning of hydrogen leak
to a driver. As informing a warning,
the sensors automatically shut off
hydrogen. Sensors are installed
around the hydrogen storage tanks
and FCEV system module.
These sensors prevent a hydrogen
leak in an emergency. Even if the
hydrogen leak occurs, the Fuel cell
electric operating does not active.
The system operating is changed to
EV (Electric vehicle) mode and you
may drive the vehicle about 2 miles
(3 km). However, we recommend
that you stop the vehicle to the safe-
ty place and contact an authorized
HYUNDAI dealer.

OFEQ018009

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Never touch orange or high
voltage labeled components
including wires, cables, and
connections.
If the insulators or covers are
damaged or removed, severe
injury or death from electrocu-
tion may occur.

WARNING

In the fuel cell system, the bat-
tery uses high voltage to oper-
ate the motor and other compo-
nents.
This high voltage battery sys-
tem can be very dangerous.
Never touch the system. If you
touch the battery system, seri-
ous injury or death may occur.

WARNING

OFEQ018010

•

Do not disassemble or assem-
ble the high voltage battery
system. Doing so may result
in electric shock causing
death or serious injury.

•

If you disassemble or assem-
ble system components
improperly, it may damage the
performance and reliability of
your vehicle.

•

If coolant and electrolyte
come in contact with your
body, clothes or eyes, immedi-
ately flush with a large quanti-
ty of fresh tap water. Have
your eyes examined by a doc-
tor as soon as possible.

WARNING

Never assemble or disassemble
the high voltage battery system.

•

If you assemble or disassem-
ble 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,
contact an authorized
HYUNDAI dealer.

•

Do not touch the high voltage
battery and high voltage cable
connected to motor (orange
color). Severe burns and elec-
tric shock may occur. For your
safety, do not touch the cover
of electronic components and
electronic cable.

Do not

remove the cover of electron-
ic components and electronic
cable. In particular, never
touch the high voltage battery
system when the FCEV sys-
tem is operating. It may result
in death or serious injury.

WARNING

•

Never use the package mod-
ules (high voltage battery,
inverter, converter) for any
other purpose.

•

Do not use an after-market
battery charger to charge the
high voltage battery. Doing so
may result in death or serious
injury.

•

Never get near or put a high
voltage battery system in a
fire. Doing so may result in
serious burns.

•

Never drill into, strike or oth-
erwise damage the package
modules. An electric shock
may occur resulting in seri-
ous injury or death.

WARNING

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This vehicle uses the high volt-
age battery system to generate
high voltage.
High voltage in the battery sys-
tem is very dangerous and can
cause severe burns and electric
shock. This may result in seri-
ous injury or death.

•

For your safety, never touch,
replace, dismantle or remove
the high voltage battery sys-
tem including components,
cables and connectors.
Severe burns or electric
shock may result in serious
injury or death if you do not
follow this warning.

•

When the high voltage battery
system operates, the battery
system can be hot. Always be
careful because burns or elec-
tric shock may be caused by
high voltage.

•

Do not drop water or liquid on
to Fuel cell power module
compartment.

The system

components are covered. If
you drop water or liquid on to
system components, it may
result in electric shock.

WARNING

•

When the vehicle is paint
baked, do not pass 30 min-
utes in 158°F (70°C) or 20 min-
utes in 176°F (80°C) degree.

•

When you clean the fuel cell
power module compartment,
do not wash using water.
Water may cause an electric
shock to occur and damage
electronic parts and compo-
nents.

CAUTION

•

Do not assemble or disassem-
ble the hydrogen tanks.
Improper work may damage
the performance and reliabili-
ty and unexpected problem
may occur.

For hydrogen

tanks work, contact an author-
ized HYUNDAI dealer.

•

Never drill into, strike or oth-
erwise damage the hydrogen
tanks. Unexpected problem
may occur resulting in seri-
ous injury and death.

•

Never get near or put a hydro-
gen tanks in a fire. Doing so
may result in big injury.

•

Never use the hydrogen tank
for any other purpose.

WARNING

Service plug

OFEQ018011

The FCEV system contains
many electronic components.
High voltage components like
cables and other parts may emit
electromagnetic waves. Even if
the electromagnetic cover
blocks electromagnetic emis-
sions, electromagnetic waves
may have an effect on electron-
ic appliances. If you park the
vehicle for a long time, the high
voltage battery or 12V battery
will discharge.You need to drive
the vehicle several times per
month. We recommend driving
at least 10 minutes or 2 miles (3
km) when you drive the vehicle.
If the high voltage battery is dis-
charged and if it is impossible
to jump start the vehicle contact
your HYUNDAI dealer.

CAUTION

•

When you start the FCEV sys-
tem in the "P" or "N" gear
position, the "Ready (

indicator is illuminated in the
cluster. The driver can drive
the vehicle.

•

When you leave the vehicle,
you should turn off the sys-
tem or shift into the "P" posi-
tion. If you depress the accel-
erator pedal by mistake and
the vehicle is not in the "P"
position, the vehicle will move
abruptly. This may result in
serious injury or death.

WARNING

Never touch the service plug
under the rear seat.
The service plug is attached to
the high voltage battery system.
Touching the service plug will
result in death or serious injury.
Service personnel should fol-
low procedures in service man-
ual.

WARNING

H10

How to Start the Vehicle

1. Holding the smart key, sit in the

driver's seat.

2. Fasten the seat belt before start-

ing the vehicle.

3. Make sure to engage the parking

brake.

4. Turn OFF all electrical devices.
5. Make sure to depress and hold

the brake pedal.

6. While depressing the brake pedal,

shift to P (Park).

7. Depress and hold the brake pedal

while pressing the POWER button.

8. When the "

" indicator is ON,

you can drive the vehicle.

When the "

" indicator is OFF,

you cannot drive the vehicle. Start
the vehicle again.

9. Depress and hold the brake pedal

and shift to the desired position.

Information

While the charging cable is connected,
the gear cannot be shift from P (Park)
to any other gear for safety reasons.

10. Release the parking brake and

slowly release the brake pedal.
Check if the vehicle slowly moves
forward, then depress the accel-
erator pedal.

S O

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OFEQ018013

■

Type A

OFE051462N

■

Type B

H11

How to Stop the Vehicle

1. Hold down the brake pedal while

the vehicle is parked.

2. While depressing the brake pedal,

shift to P (Park).

3. While depressing the brake pedal,

engage the parking brake.

4. While depressing the brake pedal,

press the Power button and turn
off the vehicle.

5. Check if the "

" indicator is

turned OFF on the instrument
cluster.

When the "

" indicator is ON

and the gear is in a position other
than P (Park), the driver can acci-
dently depress the accelerator
pedal, causing the vehicle to move
unexpectedly.

Virtual Engine Sound System

The Virtual Engine Sound System
generates engine sound for pedestri-
ans to hear vehicle sound because
there is no sound while the FCEV
vehicle is operating.
• If the vehicle is in the ready (

)

mode and the gear is not in P
(Park),

• When the gear is shifted to R

(Reverse), an additional warning
sound will be heard.

•

The vehicle is much quieter
while driving than a conven-
tional gasoline-powered vehi-
cle. Be aware of your sur-
roundings and always drive
safely.

•

After you park the vehicle or
while you are waiting at a traf-
fic light, check whether there
are children or obstacles
around the vehicle.

•

Check if there is something
behind the vehicle when driv-
ing in reverse. Pedestrians
may not hear the sound of the
vehicle.

CAUTION

H12

Fuel filler door

Opening the fuel filler door

1. Turn the vehicle off.
2. Push the fuel filler door opener

button.

• The fuel filler door does not

open if the vehicle is not off.

• The fuel filler door may open

after several seconds from turn-
ing off the vehicle. However, in
cold weather, the fuel door may
not open for about 45 seconds
until the cluster message
"Powering down..." disappears.
This is for protecting the fuel
cell system.

3. Pull the fuel filler door (1) out to

fully open.

4. Pull the fuel filler cap (2).
5. Place the cap on the fuel filler door.

NOTICE

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OFE039063L

OFEQ018015N

H13

Information

If the fuel filler door does not open
because ice has formed around it, tap
lightly or push on the door to break
the ice and release the door. Do not
pry on the door. If necessary, spray
around the door 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.

Closing the fuel filler door

1. Cover the fuel filler with the cap.
2. Close the fuel filler door until it is

latched securely.

•

If the fuel filler cap requires
replacement, use parts for
replacement from an author-
ized Hyundai dealer. An incor-
rect fuel filler cap can result in
a serious malfunction of the
fuel system.

Contact an

authorized HYUNDAI dealer
for replacement.

•

If the fuel filler door is not
completely closed, the vehicle
is not turned on. Close the
fuel filler door and turn on the
vehicle.

WARNING

•

According to the hydrogen
fueling station condition the
hydrogen may not be filled
fully and the driving distance
may change accordingly. The
hydrogen may not be charged
fully if the fueling station does
not satisfy the fueling method
specified in the fueling. stan-
dard (SAE J2601) or if the
hydrogen is not enough in the
station,

the fueling facility

has failure, etc.

•

Depending on the remaining
hydrogen in the vehicle and
ambient temperature, the time
required for fueling may vary.
More time may be required for
fueling if the remaining hydro-
gen level is low and the
weather is hot. Also, required
time may be longer if the
hydrogen cooling tempera-
ture of the fueling station is
high.

•

The distance to empty may
vary depending on the driving
environment (weather, traffic,
etc.) and driving method
(rapid acceleration, heating
and air conditioning, etc.).

WARNING

H14

•

Do not get back into a vehicle
once you have begun refuel-
ing since you can generate
static electricity by touching,
rubbing or sliding against any
item or fabric (polyester, satin,
nylon, etc.) capable of produc-
ing static electricity. Static
electricity discharge can
ignite fuel vapors resulting in
rapid burning. If you must re-
enter the vehicle, you should
once again eliminate poten-
tially dangerous static elec-
tricity discharge by touching a
metal part of the vehicle, away
from the fuel filler neck, noz-
zle or other gasoline source.

•

Do not use cellular phones
while refueling. Electric cur-
rent and/or electronic interfer-
ence from cellular phones can
potentially ignite fuel vapors
causing a fire.

•

When refueling, always shut
the power off. Once refueling
is complete, check to make
sure the fuel filler cap and fuel
filler door are securely closed,
before starting the vehicle.

•

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.
Automotive fuel is highly
flammable and can, when
ignited, result in fire.

•

If a fire breaks out during refu-
eling, leave the vicinity of the
vehicle, and immediately con-
tact the manager of the gas
station and then contact the
local fire department. Follow
any safety instructions they
provide.

S O

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Refueling dangers

Automotive fuels are flammable
materials.

When refueling,

please note the following guide-
lines carefully. Failure to follow
these guidelines may result in
severe personal injury, severe
burns or death by fire or explo-
sion.

•

Read and follow all warning
posted at the gas station facil-
ity.

•

Before touching the fuel noz-
zle,

you should eliminate

potentially dangerous static
electricity discharge by touch-
ing another metal part of the
vehicle, a safe distance away
from the fuel filler neck, noz-
zle, or other gas source.

WARNING

H15

Warning and indicator lights

OFE048100N

■

Type A

1. Power gauge

2. Speedometer

3. Fuel cell stack temperature gauge

4. Fuel gauge

5. Odometer/Cluster display/

Trip computer

6. Warning and indicator lights

Air bag warning

Charging system warning

Electronic Stability Control
(ESC) OFF indicator

Forward Safety warning

Seat belt warning

Low fuel level warning

Immobilizer Indicator

Parking brake &
brake fluid warning

Low tire pressure warning

Turn Signal Indicator

EPB

Electronic Parking Brake
(EPB) warning

Regenerative brake
warning

Service warning

High Beam Indicator

AUTO
HOLD

AUTO HOLD Indicator

Anti-lock brake system
(ABS) warning

Power down warning

Light ON Indicator

Master Warning

Electronic Brake force
Distribution (EBD) warning

Hydrogen gas leak
warning (Red)

Ready indicator

LED Headlight warning

Hydrogen leak sensor
warning (Yellow)

Lane Safety indicator

Rear fog indicator

Motor Driven Power
Steering (MDPS) warning

Electronic Stability Control
(ESC) indicator

Red

Yellow

❈

For more details, refer to the ‘Instrument cluster’ in Chapter 3.

H16

OFE041480N

1. Power gauge

2. Speedometer

3. Fuel cell stack temperature gauge

4. Fuel gauge

5. Warning and indicator lights

6. Odometer/Cluster display/

Trip computer

Air bag warning

Charging system warning

Electronic Stability Control
(ESC) OFF indicator

Forward Safety warning

Seat belt warning

Low fuel level warning

Immobilizer Indicator

Parking brake &
brake fluid warning

Low tire pressure warning

Turn Signal Indicator

EPB

Electronic Parking Brake
(EPB) warning

Regenerative brake
warning

Service warning

High Beam Indicator

AUTO
HOLD

AUTO HOLD Indicator

Anti-lock brake system
(ABS) warning

Power down warning

Light ON Indicator

Master Warning

Electronic Brake force
Distribution (EBD) warning

Hydrogen gas leak
warning (Red)

Ready indicator

LED Headlight warning

Hydrogen leak sensor
warning (Yellow)

Lane Safety indicator

Electric Power Steering
(EPS) warning

Electronic Stability Control
(ESC) indicator

Yellow

❈

For more details, refer to the ‘Instrument cluster’ in Chapter 3.

■

Type B

S O

F F

V ((C

T..))

H17

Cluster Display Messages

Check FCEV System

This warning message is displayed
and the warning light illuminates
when the FCEV system is not work-
ing properly.
In this case,have the vehicle checked
by an authorized HYUNDAI dealer.

Power limited due to high
coolant temperature

This warning message is displayed
when the FCEV's stack is overheat-
ed and the power supply to the
FCEV system is limited.
If the warning light stays on when in
"Ready (

)" state or while driving

the vehicle, this indicates that the
fuel cell stack may have failure. In
this case, we recommend you to
drive safely and have your vehicle
inspected by an authorized
HYUNDAI dealer.

Replace fuel cell coolant and
filter

This warning message is displayed
when the fuel cell coolant and filter
need to be checked.
In this case, have the vehicle
checked by an authorized HYUNDAI
dealer.

▲▲

Do not drive on uphill or accel-
erate suddenly when the power
down warning light is on. The
power is limited and may result
in dangerous situation or vehi-
cle damage.

CAUTION

H18

S O

F F

V ((C

T..))

Refill electric components
coolant

This warning message is displayed
when the electronic device's coolant
level in the tanks is low.
In this case, have the vehicle
checked by an authorized HYUNDAI
dealer and refill the coolant.

Stop vehicle and check power
supply

This warning message is displayed
when any serious malfunction of the
vehicle is detected.
In this case, drive the vehicle imme-
diately to a safe area and turn off the
vehicle. Then turn the vehicle on
again.
If the message is displayed again,
have the vehicle checked by an
authorized HYUNDAI dealer.

Close fuel door before turning
vehicle On

This warning message is displayed
when you turn on the vehicle with
the fuel filler door open. Close the
fuel filler door and turn on the vehicle
again.

Hydrogen tank overfilled due
to hydrogen station error

This warning message is displayed
when the hydrogen tank is over-refu-
eled with the hydrogen due to a prob-
lem of the fueling station.
Turn off the vehicle and then turn on
the vehicle. If the message is dis-
played again, have the vehicle
checked by an authorized HYUNDAI
dealer.

Small hydrogen leak possible

This warning message is displayed
when the minor hydrogen leakage is
detected in the vehicle. In this case,
have the vehicle checked by an
authorized HYUNDAI dealer.
If the vehicle has to be stopped due
to the leakage, hydrogen gas leak
warning light (red) will illuminate and
'Hydrogen leak detected. Stop safely
immediately.' message is displayed.

Power limited due to low
hydrogen tank temperature

This warning message is displayed
to protect the battery and fuel cell
system when the temperature of the
hydrogen tanks is low.
If this message is still displayed after
the ambient temperature has
increased enough, have the vehicle
checked by an authorized HYUNDAI
dealer.

▲▲

H19

Hydrogen tank temperature
out of range! Stop safely
immediately

This warning message is displayed
to protect the hydrogen tank system
when the temperature of the hydro-
gen tank is too high or too low.
Turn off the vehicle and stop to let
the temperature of the hydrogen tank
go down.

Hydrogen leak detected. Stop
safely immediately

This warning message is displayed
and the hydrogen gas leak warning
light (red) illuminates when the
hydrogen leakage is detected in the
vehicle. In this case, we recommend
you to stop driving and stop the vehi-
cle immediately at a safe area. Then
turn off the vehicle and have your
vehicle inspected by an authorized
HYUNDAI dealer.

Check hydrogen leak sensor

This warning message is displayed
and the light showing the malfunction
of the hydrogen leakage detection
sensor illuminates when there is a
malfunction with the hydrogen leak-
age detection sensor. In this case,
have the vehicle checked by an
authorized HYUNDAI dealer.

Refueling…

This warning message is displayed
while refueling the vehicle. Do not
turn on the vehicle and wait until the
refueling is complete.

Check fuel door sensor

This warning message is displayed
when there is a malfunction with the
sensor located below the fueling inlet
which is used for communicating
with the fueling station. Check and
remove if there is any foreign sub-
stance around the fueling inlet.
If this message is still displayed after
the foreign substance is removed,
have the vehicle checked by an
authorized HYUNDAI dealer.

▲▲

If this message is still displayed
after the vehicle is turned off
and stopped for a sufficient
time, we recommend you to
stop driving and have your vehi-
cle immediately inspected by an
authorized HYUNDAI dealer.

WARNING

H20

S O

F F

V ((C

T..))

Open fuel door after turning
vehicle Off

This warning message is displayed
when you try to open the fuel filler
door while the vehicle is turned on.
Turn of the vehicle and open the fuel
filler door. If the message is still dis-
played after a while, have the vehicle
checked by an authorized HYUNDAI
dealer.

Replace hydrogen tank.
Maximum number of refill
cycles exceeded

This warning message is displayed
when the number of times refueling
the vehicle exceeds the predefined
number (4,995 times). The fuel cell
system stops operation for safety
even if the vehicle is refueled enough
and when there is no problem with
the vehicle. In this case, have the
hydrogen storage system replaced
by an authorized HYUNDAI dealer.

Power limited due to fuel cell
system error

This warning message is displayed
when there is a malfunction with the
fuel cell system and the power sup-
ply to the fuel cell system is limited.
If the warning light stays on when in
"Ready (

)" state or while driving

the vehicle, this indicates that the
fuel cell system may have failure. In
this case, have the vehicle checked
by an authorized HYUNDAI dealer.

Check fuel cell system! Stop
safely immediately

This warning message is displayed
when any serious malfunction of the
fuel cell system is detected.
In this case, immediately park the
vehicle at a safe area and turn off the
vehicle. Then turn the vehicle on
again.
If the message is displayed again,
have the vehicle checked by an
authorized HYUNDAI dealer.

Unable to start vehicle! Check
high voltage system

This warning message is displayed
when there is a malfunction with the
high voltage system.
If the vehicle will not turn on, have
the vehicle checked by an authorized
HYUNDAI dealer.

▲▲

H21

Unable to start vehicle.
Hydrogen too low

This warning message is displayed
when the fuel is empty and the vehi-
cle is not turned on. The vehicle will
not turn on and we recommend that
you have your vehicle inspected by
an authorized HYUNDAI dealer.

Check FCEV System! Stop and
turn vehicle Off

This warning message is displayed
when there is a temporary malfunc-
tion with the FCEV system. Stop the
vehicle at a safe area and turn off the
vehicle. Then turn on the vehicle
after a while. If the message is dis-
played again, have the vehicle
checked by an authorized HYUNDAI
dealer.

Check 12V battery. Stop safely
and engage parking brake

This warning message is displayed
when the voltage of the auxiliary bat-
tery is low. Stop the vehicle at a safe
area and turn off the vehicle. Then
turn on the vehicle after a while. If the
message is displayed again, have
the vehicle checked by an authorized
HYUNDAI dealer.

Low fuel

This warning message is displayed
when you need to refuel the vehicle.
Refuel the vehicle immediately at a
nearby fueling station.

▲▲

H22

Air filter blocked. Check filter
or see owner's manual

This warning message is displayed
when
- the snow may block the air cleaner

filter after driving the vehicle in
heavy snow when the ambient
temperature is below 50°C (10°F)
or

- the exhaust pipe may be frozen

and clogged when the vehicle is
parked for a long time with the
vehicle ON below 50°C (10°F).

In this case, remove the snow from
the inside of the air cleaner filter and
turn on and off the vehicle. If the
warning message is displayed again,
the exhaust pipe may be blocked.
Then, move your vehicle indoors and
leave it inside more than one day to
defrost the exhaust pipe.
If the warning message is displayed
again, have the vehicle checked by
an authorized HYUNDAI dealer.

▲▲

OFE078009

OFE078010

S O

F F

V ((C

T..))

H23

FCEV mode

Entering FCEV Mode

If you select the "FCEV" menu in the Infotainment system
home screen or the "FCEV" in the menu, you can enter
the FCEV mode.
For details on FCEV Mode, refer to the navigation manu-
al that is provided separately.

FCEV Mode Menu Screen

1. Reachable Range: It shows the reachable range on the

map.

2. Fuel cell monitoring: It shows the battery information

and the power transmission flow between the compo-
nents.

3. ECO Driving: It shows the fuel efficiency information

and environmental contribution.

4. Management : It shows the status of hydrogen tank

(warning alert) and 'FCEV Route' setting.

OFEQ018017N

OFEQ018019N

OFEQ018018N

Hyundai Nexo (2024 year). Manual in english - page 1