2023 HYUNDAI NEXO fuel

H19
Check fuel cell system! Stop
safely immediately
This warning message is displayed
when any serious malfunction of thefuel cell system is detected.
In this case, immediately park the
vehicle at a safe area and turn off the
vehicle. Then turn the vehicle onagain.
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 displayedwhen 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. 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.
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FCEV mode
Entering FCEV Mode
If you select the "FCEV" menu in the AVN 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 themap.
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.
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Reachable Range
You can check the reachable range on the screen
Fuel cell monitoring
You can check the FCEV's Start-up status, battery infor-
mation and power transmission flow between the compo-
nents.
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Hydrogen fuel economy
1. Fuel Efficiency Graph: It shows fuel efficiency informa-tion of the last 45 minutes.
2. Average Fuel Efficiency (MPGe): It shows the average fuel efficiency.
3. Initialization: It initializes the fuel efficiency graph infor- mation.
ECO contribution
You can check the amount of purified air and CO2 reduc-
tion rate.
- Air purification
It shows the amount of air that 0 adult(s) breathe(s) per
day is purified
- CO2 reduction
It shows that the same amount of CO2 exhausted by an
equal class gasoline vehicle is reduced.
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Management
1. Hydrogen Tank : It shows the temperature, pressure
and status of the hydrogen tank while driving.
2. Warning [Destination unreachable warning]
You can set to have the warning pop up when the vehi-cle cannot reach the destination with the current
remaining hydrogen fuel.
3. FCEV Route [Display FCEV Route Bar on Map]
You can set to indicate the FCEV route and reachablerange on the map screen.
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If you do not start the vehicle imme-
diately after pressing the 12V Battery
Reset switch, the power of 12V bat-
tery is automatically disconnected
after few seconds to save the 12V
battery from additional discharge. If
the 12V battery is disconnected prior
to starting the vehicle, press the 12V
Battery Reset switch again and then
immediately start the vehicle as
explained.
Repeated use of the 12V Battery
Reset switch without a sufficient ON
cycle (30 Min+) may cause over dis-
charge of the 12V battery, which will
prevent the vehicle from starting. If
the 12V battery is over discharged to
a point that the reset does not work,
try to jump-start the vehicle. Information
After starting the vehicle ( indica-
tor on), the 12V battery is being
charged whether the accelerator pedal
is depressed or not. ❈
❈ For more details regarding the
jump start, refer to the 'Jump star-
ing' in Owner's manual Chapter 6.
Emergency while driving
If an accident occurs
1. Stop the vehicle, put the gear into
the P(Park) position, set the park-
ing brake, and turn the vehicle off
to prevent the hydrogen and cur-rent from leaking.
The flow of hydrogen into the fuel cell stack will be shut off to prevent
the current from being generated.
2. Evacuate to the safety place.
3. Call emergency services for help and let them know the vehicle is a
Fuel Cell Electric Vehicle.
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If a fire occurs
1. Stop the vehicle, put the gear intothe P (Park) position, set the park-
ing brake, and turn the vehicle off
to prevent the hydrogen and cur-rent from leaking.
The flow of hydrogen into the fuel cell stack will be shut off to prevent
the current from being generated.
2. If the fire is small, which can be extinguished with fire extinguisher,
use carbon dioxide extinguisher.
You can also extinguish the fire
with water when the vehicle power
is turned off. If the fire is too big to be extinguished
with the fire extinguisher, evacuate
from the vehicle, call the fire depart-
ment, and let them know the vehicle
is a Fuel Cell Electric Vehicle. Do not
come close to the vehicle until the
fire is totally extinguished.
Emergency venting of hydrogen
gas
If the temperature near the safety
valve located at the rear under vehi-
cle is over 110°C caused by a fire or
other reasons, the safety valve will
open to vent hydrogen gas. Venting
the hydrogen gas makes a loud
noise because the venting speed is
very fast. Stay well away from the
vehicle. This jet stream of hydrogen
gas could ignite.
If a submersion in water occurs
If your vehicle was flooded and has
soaked carpeting or water on the
flooring, you should not try to start
the vehicle by pressing the POWER
button.
Call an authorized HYUNDAI dealer.
Do not use water to extinguish a
fire when the vehicle power is
turned on. Serious electric
shock may result.
WARNING

H29
Hydrogen station
You can search the hydrogen fueling station and set the station as the
destination in the AVN screen. Select
'Menu-Nearby POI' in the mapscreen and select 'Fuel stations' to
see the list of stations. Set the near-
est station as the destination. Check
the station operation status and
opening hours before visiting the sta-tion.
Fully refueling the vehicle may be
impossible depending on the station
condition and the reachable range
may change accordingly.
Also, the refueling time may vary
depending on the hydrogen fueling
pressure and ambient temperature.
The reachable range may change
according to the driving environment
(weather, traffic, etc.) and driving
method (sudden acceleration, heat-ing and air conditioning, etc.).
* Refueling the hydrogen gas mustbe done by the person who has
completed the certification course
and training related to the high-
pressure gas. Self-refueling is pro-hibited.