2023 HYUNDAI NEXO Owners Manual

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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H20Air filter blocked. Check filter
or see owner's manual
This warning message is displayedwhen
- the snow may block the air cleaner filter after driving the vehicle in
heavy snow when the ambient
temperature is below 50°F (10°C)or
- the exhaust pipe may be frozen and clogged when the vehicle is
parked for a long time with the
vehicle ON below 50°F (10°C).
In this case, remove the snow fromthe 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.
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H21
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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H25
When the high voltage battery is weak
When the high voltage battery is
weak due to driving on a hill for a
long time or accelerating and decel-
erating the vehicle repeatedly, the
acceleration performance may be
lower than usual. In this case, be
cautious not to overtake other vehi-
cles.
If the 12 volt battery is dis-
charged
This vehicle does not have a regular
12V battery that needs periodic
replacement. It is lithium ion polymer
type integrated into the high voltage
battery. The vehicle has a 12V bat-
tery protection system that cuts 12V
battery from vehicle draw to prevent
full discharge.
If the 12V battery is discharged, you
should try charging it by pressing the
"12V BATT RESET" button.
Using the 12V battery resetswitch
1. Press the 12V Battery Reset switch to reconnect the 12V bat-
tery.
2. Start the vehicle within 15 sec- onds of pressing the 12V Battery
Reset switch.
3. After starting vehicle ( indica- tor on), move the vehicle outside
and keep the vehicle ready ( )
mode more than 30 minutes safe-
ly to charge the 12V battery.
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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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