2020 HYUNDAI NEXO climate control

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Convenient features of your vehicle
3
Information
Operating the system primarily in
Fresh mode is recommended. Use
Recirculation mode temporarily only
when needed.
Prolonged operation of the heater in
Recirculation mode and without the
A/C ON can cause fogging of the
windshield.
In addition, prolonged use of the A/C
ON in Recirculation mode may result
in excessively dry, dehumidified air in
the cabin and may promote formation
of musty vent odor due to stagnant air.
Fan speed control (5)
The fan speed can be set as desired
by pushing the fan speed control but-
ton.
More air is delivered with higher fan
speeds.
Pressing the OFF button turns off the
fan.
Operating the fan when the
POWER button is in the ON posi-
tion could cause the battery to
discharge. Operate the blower
when the vehicle is in the ready
( ) mode.
Operating the fan when POWER
button is in the ON position could
cause the battery to discharge.
Operate the fan when the vehicle
is in the ready ( ) mode.
NOTICE
NOTICE
i
Continued use of the climate
control system operation in
Recirculation mode for a pro-
longed period of time may
cause drowsiness to the
occupants in the cabin. This
may lead to loss of vehicle
control which may lead to an
accident.
Continued use of the climate
control system operation in
Recirculation mode with the
A/C OFF may allow humidity
to increase inside the cabin.
This may cause condensation
to accumulate on the wind-
shield and obscure visibility.
Do not sleep in your vehicle or
remain parked in your vehicle
with the windows up and
either the heater or the air
conditioning ON for pro-
longed periods of time. Doing
so may increase the levels of
carbon dioxide in the cabin
which may lead to serious
injury or death.
WARNING

3-156
Convenient features of your vehicle
When using the air conditioning
system, monitor the temperature
gauge closely while driving up
hills or in heavy traffic when out-
side temperatures. Air condition-
ing system operation when climb-
ing a steep grade or in high out-
side ambient temperatures can
cause fuel cell stack overheating.
Continue to use the fan, but turn
the air conditioning system off if
the temperature gauge indicates
fuel cell stack overheating.
Air conditioning system operation
tips
If the vehicle has been parked in
direct sunlight during hot weather,
open the windows for a short time
to let the hot air inside the vehicle
escape.
After sufficient cooling has been
achieved, switch back from recircu-
lation mode to fresh mode. To help reduce moisture inside of
the windows on rainy or humid
days, decrease the humidity inside
the vehicle by operating the air
conditioning system with the win-
dows and sunroof closed.
Use the air conditioning system
every month only for a few minutes
to ensure maximum system per-
formance.
If you operate air conditioner exces-
sively, the difference between the
temperature of the outside air and
that of the windshield could cause
the outer surface of the windshield
to fog up, causing loss of visibility. In
this case, set the mode selection
knob or button to the position
and fan speed control to the lower
speed.
System Maintenance
Cabin air filter
[A] : Outside air, [B] : Recirculated air
[C] : Climate control air filter, [D] : Blower
[E] : Evaporator core, [F] : Heater core
The cabin air filter is installed behind
the glove box. It filters the dust or other
pollutants that enter the vehicle
through the heating and air condition-
ing system.
Have the The cabin air filter replaced
by an authorized HYUNDAI dealer
according to the maintenance sched-
ule.
NOTICE
OIK047401L

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Convenient features of your vehicle
3
To defrost outside windshield
1. Set the fan speed to the highest
(extreme right) position.
2. Set the temperature to the extreme
hot (HI) position.
3. Press the defroster button ( ).
4. The outside (fresh) air position will
be selected automatically.
If the position is selected, fan
speed may increase slightly to
improve airflow.
Defogging logic
To reduce the probability of fogging
up the inside of the windshield, the
air intake or air conditioning are con-
trolled automatically according to
certain conditions such as or
positions. To cancel or reset the
defogging logic, do the following.
Automatic climate control system
1. Turn the POWER button to the ON
position.
2. Press the defroster button ( ).
3. While pressing the air conditioning
button (A/C), press the air intake
control button at least 5 times
within 3 seconds.
The Automatic Temperature Control
information screen will blink 3 times
to indicate that the defogging logic
has been disabled.
Repeat the steps again to re-enable
the defogging logic.
If the battery has been discharged or
negative (-) battery cable is discon-
nected, it resets to the defog logic
status.
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Convenient features of your vehicle
Auto Defogging System
(Additional Feature with
Automatic Temperature
Control System) (if equipped)
Auto defogging helps reduce the pos-
sibility of fogging up the inside of the
windshield by automatically sensing
the moisture on inside the windshield.
The auto defogging system operates
when the heater or air conditioning is
on.
Information
The auto defogging system may not
operate normally, when the outside
temperature is below 14 °F (-10 °C).When the Auto Defogging
System operates, the indi-
cator will illuminate.
If a high amount of humidity is
detected in the vehicle, the Auto
Defogging System will be enabled.
The following steps will be performed
automatically:
Step 1) The A/C button will turn ON.
Step 2) The air intake control will
change to Fresh mode.
Step 3) The mode will be changed to
defrost to direct airflow to the
windshield.
Step 4) The fan speed will be set to
MAX.
If the air conditioning is off or recircu-
lated air position is manually select-
ed while Auto Defogging System is
ON, the Auto Defogging System
Indicator will blink 3 times to signal
that the manual operation has been
canceled.
To cancel or reset the
Auto Defogging System
Press the front windshield defroster
button for 3 seconds when the
POWER button is in the ON position.
When the Auto Defogging System is
canceled, the ADS OFF symbol will
blink 3 times and ADS OFF will be
displayed on the climate control
information screen.
When the Auto Defogging System is
reset, the ADS OFF symbol will blink
6 times without a signal.
i

Driving your vehicle
5
Before Driving ........................................................5-4
Before Entering the Vehicle ...........................................5-4
Before Starting ..................................................................5-4
Power Button..........................................................5-6
POWER Button Positions.................................................5-7
Starting the Vehicle ..........................................................5-9
Turning Off the Vehicle .................................................5-10
Reduction Gear.....................................................5-11
Reduction Gear Operation ............................................5-11
Parking ...............................................................................5-13
LCD Display Messages ...................................................5-13
Good Driving Practices ..................................................5-16
Paddle Shifter (Regenerative Braking
Control)..................................................................5-17
Braking System ....................................................5-18
Power Brakes ...................................................................5-18
Disc Brake Wear Indicator ............................................5-19
Electronic Parking Brake (EPB)...................................5-19
Auto Hold ..........................................................................5-25
Anti-lock Brake System (ABS) ....................................5-29
Electronic Stability Control (ESC)................................5-31
Vehicle Stability Management (VSM).........................5-34
Hill-Start Assist Control (HAC) ....................................5-36
Good Braking Practices .................................................5-36
Drive Mode Integrated Control System ............5-37
Drive mode change alert ...............................................5-38
ECO mode climate control ............................................5-38
Forward Collision-avoidance Assist (FCA)
System ...................................................................5-39
System Setting and Activation.....................................5-39
FCA Warning Message and System Control ............5-41
FCA Sensor (Front Radar/Front View Camera).......5-44
System Malfunction .......................................................5-46
Limitations of the System .............................................5-47
Blind-Spot Collision Warning/
Blind-Spot Collision-avoidance Assist..............5-53
System Description .........................................................5-53
System Setting and Activation.....................................5-54
Warning and System Control .......................................5-57
Detecting Sensor (Front View Camera and
Rear Corner Radar) ........................................................5-59
Limitations of the System .............................................5-62
Rear Cross-traffic Collision Warning (RCCW)/
Rear Cross-traffic Collision-avoidance Assist
(RCCA) ...................................................................5-67
System Description .........................................................5-67
System Setting and Activation.....................................5-68
Warning and System Control .......................................5-69
Limitations of the System .............................................5-73

5-38
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 60 mph (100 km/h).
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 is
changed.
[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
top of 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

6-6
What to do in an emergency
The following items may need to be
reset after the battery has been dis-
charged or the battery has been dis-
connected. See chapter 3 or 4 for:
Power Windows
Trip Computer
Climate Control System
Clock
Audio System
Sunroof
Driver Position Memory System
External power source using 12V
battery
The use of external power acces-
sories may reduce performance
and function of the vehicle.
Especially, the use of dash cam-
eras may shut off the power of the
vehicle prior to the dash camera's
automatic shut-down.
If the power of the vehicle is shut
off, start the vehicle as explained.
(refer to "Using the 12V Battery
Switch")
Jump Starting
In the event vehicle still does not
have a functional 12V battery (check
if interior lights will not turn on) then
you can try a jump start using a 12V
booster pack or jumper cables from
another vehicle's 12V battery
according to the following instruc-
tions.1. Position the vehicles close enough
that the jumper cables will reach,
but do not allow the vehicles to
touch.
2. Avoid fans or any moving parts in
the fuel cell power module com-
partment at all times, even when
the vehicles are turned off.
3. Turn off all electrical devices such
as radios, lights, air conditioning,
etc. Put the vehicles in P (Park)
and set the parking brake. Turn
both vehicles OFF.
NOTICE
Jump starting can be danger-
ous if done incorrectly. Follow
the jump starting procedure in
this section to avoid serious
injury or damage to your vehi-
cle. If in doubt about how to
properly jump start your vehi-
cle, we strongly recommend
that you have a service techni-
cian or towing service do it for
you.
CAUTION

7
Maintenance
7
Maintenance
Fuel cell power module compartment.................7-3
Maintenance services ...........................................7-4
Owner's Responsibility .....................................................7-4
Owner Maintenance Precautions..................................7-4
Owner maintenance ...............................................7-5
Owner maintenance schedule ........................................7-6
Scheduled maintenance services.........................7-7
Normal Maintenance Schedule ......................................7-8
Maintenance Under Severe Usage Conditions ........7-10
Explanation of scheduled maintenance items .7-12
Device cooling coolant ........................................7-13
Checking the Coolant Level ..........................................7-13
Changing Coolant ............................................................7-15
Stack cooling coolant ..........................................7-16
Checking the Coolant Level ..........................................7-16
Changing Coolant ............................................................7-18
Brake fluid ............................................................7-19
Checking the Brake Fluid Level ...................................7-19
Washer fluid .........................................................7-20
Checking the Washer Fluid Level................................7-20
Air cleaner ............................................................7-20
Filter Replacement ..........................................................7-20
Climate control air filter .....................................7-22
Filter Inspection ...............................................................7-22
Wiper blades .........................................................7-24
Blade Inspection ..............................................................7-24
Blade Replacement .........................................................7-24
12V battery ...........................................................7-27
Battery recharging .........................................................7-28
Reset Features.................................................................7-28
Tires and wheels ..................................................7-29
Tire Care ........................................................................\
....7-29
Recommended Cold Tire Inflation Pressures ...........7-30
Check Tire Inflation Pressure ......................................7-31
Tire Rotation...................................................................\
..7-32
Wheel Alignment and Tire Balance ............................7-33
Tire Replacement ............................................................7-33
Wheel Replacement ........................................................7-34
Tire Traction .....................................................................7-3\
4
Tire Maintenance ............................................................7-34
Tire Sidewall Labeling ....................................................7-34
Tire Terminology and Definitions................................7-38
All Season Tires ...............................................................7-42
Summer Tires ...................................................................7-42
Snow Tires ........................................................................\
7-42
Radial-Ply Tires ...............................................................7-42
Low Aspect Ratio Tires..................................................7-43
7