2023 HYUNDAI NEXO heater

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Convenient features of your vehicle
Automatic Ventilation (if equipped)
When the POWER button is in the
ON position or when the vehicle is in
the ready ( ) mode and tempera-
ture is below 15°C (59°F) with therecirculated air position selected
more than five minutes, the air intakeposition will automatically change tothe outside (fresh) air position.
To cancel or reset the Automatic
Ventilation
When the air conditioning system is
on, select Face Level mode and
press the recirculation mode button
five times within three seconds while
pressing A/C button.
When the Automatic Ventilation fea-
ture is enabled, the recirculation but-
ton LED indicator will blink 6 times.
When the Automatic Ventilation fea-
ture is disabled, the recirculation but-
ton LED indicator will blink 3 times.
Sunroof Inside Air
Recirculation (if equipped)
When the heater or air conditioning system is on with the sunroofopened, the fresh mode will be auto-
matically selected. If you press the
recirculation mode button with thesunroof open, recirculation mode
activate but will only remain enabled
for 3 minutes. After 3 minutes the air
intake control will revert back to
Fresh mode. When the sunroof is closed, the air
intake position will return to the orig-
inal position that was selected.
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Convenient features of your vehicle
Close the vanity mirror cover secure-
ly and return the sunvisor to its origi-
nal position after use.
Do not put several tickets in the
ticket holder at one time. This
could cause damage to the ticket
holder.Power Outlet
The power outlet is designed to pro-
vide power for mobile telephones or
other devices designed to operate
with vehicle electrical systems. The
devices should draw less than 180 W
with the vehicle in the ready ( )
mode.To prevent damage to the PowerOutlets :
Use the power outlet only when
the vehicle is in the ready ( )
mode and remove the accessory
plug after use. Using the acces-
sory plug for prolonged periods
of time with the vehicle off could
cause the battery to discharge.
Only use 12V electric acces- sories which are less than 180 W
in electric capacity.
Adjust the air-conditioner or heater to the lowest operating
level when using the power outlet.
Close the cover when not in use.
Some electronic devices can cause electronic interference
when plugged into a vehicle's
power outlet. These devices may
cause excessive audio staticand malfunctions in other elec-
tronic systems or devices used
in your vehicle.
NOTICE
NOTICE
For your safety, do not block
your view when using the sunvi-
sor.
WARNING
Avoid electrical shocks. Do not
place your fingers or foreign
objects (pin, etc.) into a power
outlet or touch the power outletwith a wet hand.
WARNING
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Convenient features of your vehicle
To prevent the battery from beingdischarged, do not use the AC
inverter while the vehicle is not in
the ready ( ) mode.
When not using the AC inverter, make sure to close the AC invert-
er cover.
After using an electric accessory or equipment, pull the plug out.
Leaving the accessory or equip-
ment plugged in for a long time
may cause battery discharge.
Do not use an electric accessory or equipment the power con-
sumption of which is greaterthan 150W (115V).
Some electric accessories or equipments can cause electron-
ic interference. It may cause
excessive audio noise and mal-functions in other electric sys-
tems or devices in the vehicle.
Do not use broken electric accessories or equipments,
which may damage the AC
inverter and electrical systems
of the vehicle. Do not use two or more electric
accessories or equipments at
the same time. It may cause
damage to the electrical sys-
tems of the vehicle.
When the input voltage is lower, outlet LED will blink and the AC
inverter will turn off automatical-
ly. If the input voltage goes up to
normal, the AC inverter will turn
on again.
NOTICE
To reduce a risk of serious or fatal injuries:
Do not use a heated electric
device such as a coffeepot,
toaster, heater, iron, etc.
Do not insert foreign objects into the outlet and do not
touch the outlet as you may
get shocked.
Do not let children touch the
AC inverter.
WARNING

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Driving your vehicle
ECO+ mode
ECO+ mode improves
fuel efficiency with ultra
power saving driving
mode.
When ECO+ mode is selected by pressing and holding the DRIVE
MODE button, the ECO+ indicator
will illuminate.
Distance to empty may not change when the air conditioner/heater
system is off. However, actual dis-
tance may be extended.
Air conditioner/heater system turns off (except the defroster) but you
may turn it on if necessary.
When the drive mode is switched from the ECO+ mode to a different
mode, it is changed to air condi-
tioner/heater operation status of
the ECO mode.
Whenever the vehicle is restarted, the Drive Mode will reverse back to
NORMAL mode.
If ECO + mode is activated, the maximum vehicle speed is limited
below 100 km/h (60 mph).
Drive Mode Change Alert
The driver can select the Drive mode
change alert on the AVN screen.
Go to "Vehicle settings Drive
mode Drive mode change alert".
The information, which will be shown
whenever the drive mode ischanged.
Detailed alert : A change of the drive mode is shown by an
image of the vehicle.
Simple alert : A change of the drive mode is indicated by a
short message on topof the screen.
No alert : A change of the drive
mode is not indicated.
ECO Mode Climate Control
ECO Mode Climate Control helps
extend driving range by reducing the
heating and cooling power of the cli-mate control.
The driver can activate/deactivate
the system on the AVN screen.
Go to "Vehicle settings Drive
mode Eco mode climate control".
(&2

7-6
Maintenance
Owner Maintenance Schedule
When you stop for fuel:
• Check for both fuel cell stack andDevice cooling coolant level in
coolant reservoir.
Check the windshield washer fluid level.
Look for low or under-inflated tires.
While operating your vehicle:
Check for vibrations in the steering wheel. Notice if there is any
increased steering effort or loose-
ness in the steering wheel, or
change in its straight-ahead posi-tion.
Notice if your vehicle constantly turns slightly or "pulls" to one side
when traveling on smooth, levelroad.
When stopping, listen and check for unusual sounds, pulling to one
side, increased brake pedal travel
or "hard-to-push" brake pedal.
If any slipping or changes in the operation of your reduction gear
occurs, check the reduction gear
fluid level.
Check the reduction gear P (Park) function.
Check the parking brake.
Check for fluid leaks under your vehicle (water dripping from the air
conditioning system during or after
use is normal).
At least monthly:
Check coolant level in the coolantreservoir.
Check the operation of all exterior lights, including the brake lights,
turn signals and hazard warning
flashers.
Check the inflation pressures of all tires that are worn, show uneven
wear, or are damaged.
Check for loose wheel lug nuts.
At least twice a year: (i.e., every Spring and Fall)
Check radiator, heater and air con- ditioning hoses for leaks or dam-
age.
Check windshield washer spray and wiper operation. Clean wiper
blades with clean cloth dampened
with washer fluid.
Check headlamp alignment.
Check the seat belts for wear and function.
Be careful when checking the
coolant level when the fuel cell
power module is hot. Scalding
hot coolant and steam may
blow out under pressure. This
could cause burns or other seri-
ous injury.
WARNING

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7
Maintenance
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The high-pressure cooling system
has a reservoir filled with year-round
antifreeze coolant. The reservoir is
filled at the factory.
Check the antifreeze protection and
coolant level at least once a year, atthe beginning of the winter season
and before traveling to a colder cli-
mate.Checking the Coolant Level
Check the condition and connections of all cooling system hoses and
heater hoses. Replace any swollen
or deteriorated hoses.
The coolant level should be filled
between the MAX and the MIN
marks on the rear side of the coolant
reservoir when the parts in the fuel
cell power module compartment iscool.
If the coolant level is low, add enough
distilled (deionized) water to bring
the level to the MAX mark, but do not
overfill. If frequent additions are
required, you see an authorized
HYUNDAI dealer for a cooling sys-tem inspection.
Recommended coolant
When adding coolant, use only
distilled (deionized) water for your
vehicle and never mix hard water in
the coolant filled at the factory.
An improper coolant mixture can result in severe malfunction or
electric devices damage.
Do not use alcohol or methanol coolant or mix them with the spec-ified coolant.
Do not use a solution that contains more than 60% antifreeze or less
than 35% antifreeze, which would
reduce the effectiveness of thesolution.
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MaintenanceS
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The high-pressure cooling system
has a reservoir filled with year-round
antifreeze coolant. The reservoir is
filled at the factory.
Check the antifreeze protection and
coolant level at least once a year, atthe beginning of the winter season
and before traveling to a colder cli-
mate.Checking the Coolant Level
Check the condition and connections of all cooling system hoses and
heater hoses. Replace any swollen
or deteriorated hoses.
When replacing any part of the cool-
ing system there may be loss of
coolant. In that case, fill with an
exclusive coolant for the fuel cell.When replacing the ion filter car-
tridge, replace the whole stackcoolant.
The coolant level should be filled
between F (MAX) and L (MIN) marks
on the side of the coolant reservoir
when the fuel cell power module iscool. If the stack cooling coolant level is
low, add enough exclusive coolant
for fuel cell stack to provide protec-tion against freezing and corrosion in
the authorized HYUNDAI dealer.
In addition, whenever replacing the
ion filter cartridge, add enough exclu-
sive coolant for fuel cell stack.
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Maintenance
Fuse NameFuse RatingProtected Component
MEMORY110APower Tail Gate Module, A/C Control Module, A/C Control Panel
MODULE110AICM Relay Box (Outside Mirror Folding/Unfolding Relay), A/V & Navigation Head Unit (Hazard Lamp Switch),
Shift Selection Switch (SBW), Auto Light & Photo Sensor, Driver/Passenger Power Outside Mirror,
Instrument Cluster
TAIL GATEOPEN10ATail Gate Relay
P/WINDOW RH25APower Window RH Relay
P/WINDOW LH25APower Window LH Relay, Driver Safety Window Module
P/SEAT DRV25ADriver Seat Manual Switch
MODULE47.5AIBU, Remote Control Smart Parking Assist Unit, VESS Unit, Electronic Parking Brake Switch,
Lane Keeping Assist Unit(Line), Blind-Spot Collision Warning Unit LH/RH, Crash Pad Switch,
PE Room Junction Block (Multipurpose Check Connector)
MODULE87.5AData Link Connector, Crash Pad Switch, Electro Chromic Mirror
S/HEATER RR20ARear Seat Heater
HEATED
MIRROR10ADriver/Passenger Power Outside Mirror, A/C Control Panel
S/HEATER FRT20AFront Air Ventilation/Seat Heater Seat Control Module
Instrument panel fuse panel