display HYUNDAI NEXO 2023 Owners Manual

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Hydrogen leak detected. Stop
safely immediately
This warning message is displayed
and the hydrogen gas leak warninglight (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 detectionsensor 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 displayedwhen 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.
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 displayedwhen 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.
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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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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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CategoryQuestionsAnswers
Vehicle
overview
(10 items)
9. Can driving on test roads or over speed bumps damage the high voltage battery
and hydrogen tank?
The high voltage battery and hydrogen tank are unlikely to be damaged
under normal driving conditions. However, if the system begins to mal-
function due to a direct and serious vehicular impact, you are informed
of those system errors via warning lights on and the LCD display.

10. A water-like liquid is being discharged from the muffler and bottom of the vehi-
cle. Is it harmful to humans?
Water or vapor discharged is generated from electrochemical reac-
tions in the fuel cell stack, and is not harmful to humans. However,
liquids generated from the reactions can be somewhat acidic, so DO
NOT touch or ingest the liquid!
Also, the water discharged when parking the vehicle indoor may
make a puddle on the floor. Be careful as such puddle can freeze
and result in accident during winter.
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CategoryQuestionsAnswers
Cluster /
Warning Lamp (9 items)
27. What should I do if the service warning
light turns on?If the service warning light turns on during "READY" status or in driv-
ing mode, it may indicate a malfunction in operation with any fuel cell
system. Please contact an authorized HYUNDAI dealer for service.
28. What should I do if the master warninglight turns on?If the service warning light turns on when there is a malfuction in
operation in any of the vehicle systems. Please look at the LCD dis-
play for details and contact an authorized HYUNDAI dealer for serviceif needed.
29. How much farther (roughly) can I drivemy FCEV when the fuel warning light
turns on? (Remaining mileage)You can continue driving for an additional 70~90 km (40~55 miles).
It may depend on driving mode.
30. When restarting the vehicle, the " "indicator turns on on the cluster. What does this mean?It means that the fuel cell system is working in good order and your
car is ready to drive.
31. Why does the vehicle’s hydrogen tankhave a life expectancy?
The hydrogen tank is frequently refueled with the high pressure
hydrogen gas and the number of times refueling the vehicle is limit-
ed to 5,000 times (or 15 years). The hydrogen storage system
counts the number of times the vehicle is refueled and turns on the
warning light when the vehicle is refueled for over 4,995 times.
Every time the vehicle is turned on the warning message “Replace
hydrogen tank. Maximum number of refill cycles exceeded
” is displayed on the cluster. The vehicle can be driven about 1-3
million kilometers until the vehicle is refueled 5,000 times, meaning
that the hydrogen tank is used semi-permanently under common
driving condition.

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CategoryQuestionsAnswers
Fuel Cell
Stack/High VoltageBattery
(4 items)
39. What happens if hydrogen gas leaks
from the fuel cell stack?
(Red)If hydrogen gas leaks beyond what's tolerable from the fuel cell stack,
a hydrogen sensor installed in the system detects the leak and in
response, turns ON the hydrogen gas leak warning light in the cluster.
40. Can the fuel cell stack explode or burnout due to overheating?The fuel cell stack passed a high temperature test and is deemed
safe, so it is unlikely to explode.
41. Which symptoms occur if the fuel cellsystem malfunctions?
If the fuel cell system malfunctions, warning lights specific to the
actual problem appear on the LCD display. When this happens, the
vehicle speed may be limited, or the fuel cell system may shut
down. DO NOT lose your composure if this happens. Park your vehi-
cle and turn OFF the vehicle. Then, contact an authorized HYUNDAI
dealer for service.
42. Is the recharge performance of the high
voltage battery reduced depending on its length of use? Like any vehicle component, the high voltage battery will decrease
in performance as it ages over time. However, the high voltage bat-
tery of the FCEV is durable enough to work at peak performance
beyond the warranty period.
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I-4
Driver Attention Warning (DAW) System......................5-94
Resetting the System ..................................................5-95
System Malfunction ...................................................5-96
System Setting and Activation ...................................5-94
System Standby ..........................................................5-96
Driver's front air bag .......................................................2-49
Electric Power Steering (EPS) ........................................3-20
Electronic Parking Brake (EPB) .....................................5-19
Electronic Stability Control (ESC) .................................5-31
Emergency Fuel Filler Door Release..............................3-57
Explanation of Scheduled Maintenance Items ...............7-12
Exterior Features .................................................3-42, 3-176 Emergency Fuel Filler Door Release .........................3-57
Fuel Filler Door ..........................................................3-55
Hood ...........................................................................3-42
Non-Powered Tailgate ................................................3-43
Power Tailgate ............................................................3-45
Roof Side Rails ........................................................3-176
Smart Tailgate.............................................................3-51
Exterior Lights ................................................................3-89 AUTO headlamp position ..........................................3-89
Battery saver function ................................................3-95
Daytime running light (DRL) ....................................3-89
Headlamp position......................................................3-90
Headlight time-out function .......................................3-95
High Beam Assist (HBA) ...........................................3-91 High beam operation ..................................................3-91
Lane change signals ...................................................3-94
Parking lamp position ................................................3-90
Turn signals ................................................................3-94
Exterior Overview.............................................................1-2
Features of FCEV............................................................H10 Emergency while driving............................................H26
FCEV mode ................................................................H21
Fuel filler door ............................................................H12
How to Start the Vehicle .............................................H10
How to Stop the Vehicle .............................................H11
If the 12 volt battery is discharged .............................H25
LCD Display Messages ..............................................H16
Virtual Engine Sound System .....................................H11
Warning and indicator lights.......................................H15
When the high voltage battery is weak ......................H25
Floor Mat Anchor(s) .....................................................3-172
Forward Collision-Avoidance Assist (FCA) System ......5-39 FCA Sensor (Front Radar/Front View Camera).........5-44
FCA Warning Message and System Control..............5-41
Limitations of the System ..........................................5-47
System Malfunction ...................................................5-46
System Setting and Activation ...................................5-39
Front air ventilation seat .................................................2-19
Front seat warmers..........................................................2-17
Front Seats ........................................................................2-6
Index
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Infotainment system..........................................................4-2
Antenna ........................................................................4-2
Audio/Video/Navigation system (AVN) ......................4-4
Blue Link ®
center .........................................................4-4
Bluetooth ®
Wireless Technology..................................4-4
Steering wheel audio controls ......................................4-3
USB and iPod ®
port .....................................................4-2
Inside Rearview Mirror...................................................3-23
Instrument Cluster...........................................................3-58 Gauges and Meters .....................................................3-59
Instrument Cluster Control .........................................3-59
LCD Display Messages ..............................................3-76
Warning and Indicator Lights.....................................3-65
Instrument Cluster Control .............................................3-59
Instrument Panel Overview ..............................................1-5
Interior Features ............................................................3-164 AC Inverter...............................................................3-167
Cargo Security Screen ..............................................3-174
Clock ........................................................................3-171
Coat Hook ................................................................3-172
Cup Holder ...............................................................3-164
Floor Mat Anchor(s) .................................................3-172
Luggage Net Holder .................................................3-173
Power Outlet.............................................................3-166
Sunvisor ....................................................................3-165
USB Charger ............................................................3-169
Wireless Cellular Phone Charging System ..............3-169 Interior Lights .................................................................3-96
Front Door Lamp........................................................3-97
Front Map Lamp ........................................................3-96
Front Room Lamp ......................................................3-97
Glove box lamp ..........................................................3-98
Interior lamp AUTO cut .............................................3-96
Luggage compartment lamp .......................................3-97
Puddle lamp ................................................................3-98
Rear Room Lamp .......................................................3-97
Vanity mirror lamp .....................................................3-98
Welcome light.............................................................3-99
Interior Overview..............................................................1-4
Introduction of FCEV .......................................................H2
Lane Following Assist (LFA) System ............................5-87
LFA Operation ............................................................5-88
Limitations of the System ..........................................5-92
Warning Message .......................................................5-90
Lane Keeping Assist (LKA) System ..............................5-79
Limitations of the System ..........................................5-85
LKA System Function Change ..................................5-86
LKA System Operation ..............................................5-81
Warning Light and Message.......................................5-83
LCD Display ...................................................................3-81
LCD Display Control......................................................3-81
LCD Display Messages ..................................................3-76
Index
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LCD Display Modes .......................................................3-82
Leading Vehicle Departure Alert ..................................5-116
System Setting and Activation .................................5-116
Light Bulbs .....................................................................7-57 Daytime Running Lamp Replacement .......................7-58
Front Center Lamp Replacement ...............................7-58
Headlamp Replacement..............................................7-58
High Mounted Stop Lamp..........................................7-59
Interior Light Bulb Replacement ...............................7-60
License Plate Light Bulb Replacement ......................7-60
Parking Lamp Replacement .......................................7-58
Rear Combination Light Bulb Replacement ..............7-59
Side Marker Replacement ..........................................7-58
Side Repeater Lamp Replacement .............................7-58
Turn Signal Lamp Replacement.................................7-58
Lighting ...........................................................................3-89 Exterior Lights............................................................3-89
Interior Lights.............................................................3-96
Welcome System ........................................................3-99
Luggage Net Holder .....................................................3-173 Maintenance Services .......................................................7-4
Owner Maintenance Precautions..................................7-4
Owner's Responsibility.................................................7-4
Mirrors ............................................................................3-23
Inside Rearview Mirror ..............................................3-23
Side View Mirrors ......................................................3-30
Occupant Classification System (OCS)..........................2-58
Owner Maintenance ..........................................................7-5 Owner Maintenance Schedule......................................7-6
Paddle Shifter (Regenerative Braking Control) .............5-17
Parking Distance Warning (Reverse/Forward) System .......................................................................3-105
Passenger's front air bag .................................................2-49
Power Button ....................................................................5-6 POWER Button Positions ............................................5-7
Starting the Vehicle ......................................................5-9
Turning Off the Vehicle..............................................5-10
Power Outlet .................................................................3-166
Power Tailgate ................................................................3-45
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Index
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