2022 HYUNDAI NEXO air conditioning

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, level
road.
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

7-7
7
Maintenance
At least once a year:
Clean body and door drain holes.
Lubricate door hinges and hoodhinges.
Lubricate door and hood locks and latches.
Lubricate door rubber weather strips.
Lubricate door checker.
Check the air conditioning system.
Inspect and lubricate reduction gear linkage and controls.
Check the brake fluid level.
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Follow Normal Maintenance Schedule if the vehicle is usually operated where
none of the following conditions apply. If any of the following conditions apply,
you must follow the Maintenance Under Severe Usage Conditions.
Repeated driving short distance of less than 8 km (5 miles) in normal tem-
perature or less than 16 km (10 miles) in freezing temperature
Low speed driving for long distances
Driving on rough, dusty, muddy, unpaved, graveled or salt-spread roads
Driving in areas using salt or other corrosive materials or in very cold weather
Driving in heavy dust condition
Driving in heavy traffic area
Driving on uphill, downhill, or mountain road repeatedly
Towing a trailer or using a camper, or roof rack
Driving as a patrol car, taxi, other commercial use of vehicle towing
Driving over 170 km/h (106 miles/h)
Frequently driving in stop-and-go condition
If your vehicle is operated under the above conditions, you should inspect, replace or refill more frequently than the following Normal MaintenanceSchedule. After the periods or distance shown in the chart, continue to followthe prescribed maintenance intervals.

7-12
Maintenance
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Cooling System
Check cooling system components,
such as radiator, coolant reservoir,
hoses and connections for leakage
and damage. Replace any damaged
parts.
Coolant
The coolant should be changed at
the intervals specified in the mainte-
nance schedule.
Reduction Gear Fluid
Inspect the reduction gear fluid
according to the maintenance sched-
ule.
Brake Hoses and Lines
Visually check for proper installation,
chafing, cracks, deterioration and
any leakage. Replace any deteriorat-
ed or damaged parts immediately.
Brake Fluid
Check brake fluid level in the brake
fluid reservoir. The level should be
between the MIN and the MAX
marks on the side of the reservoir.
Use only hydraulic brake fluid con-
forming to DOT 3 or DOT 4 specifi-
cation.
Brake Discs, Pads, Calipers
and Rotors
Check the pads for excessive wear,
discs for run out and wear, and
calipers for fluid leakage.
Suspension Mounting Bolts
Check the suspension connections
for looseness or damage. Retighten
to the specified torque.
Steering Gear Box, Linkage &
Boots/Lower Arm Ball Joint
With the vehicle stopped and the
vehicle off, check for excessive free-
play in the steering wheel. Check the
linkage for bends or damage. Check
the dust boots and ball joints for
deterioration, cracks, or damage.
Replace any damaged parts.
Drive Shafts and Boots
Check the drive shafts, boots and
clamps for cracks, deterioration, or
damage. Replace any damaged
parts and, if necessary, repack the
grease.
Air Conditioning Refrigerant
Check the air conditioning lines and
connections for leakage and dam-
age.

7-38
Maintenance
Temperature - A, B & C
The temperature grades are A (the
highest), B and C representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel.
Sustained high temperature can
cause the material of the tire to
degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. Grade C
responds to a level of performance
which all passenger car tires must
meet under the Federal Motor
Vehicle Safety Standard No. 109.
Grades B and A represent higher
levels of performance on the labora-
tory test wheel than the minimum
required by law.
Tire Terminology and
Definitions
Air Pressure
The amount of air inside the tire
pressing outward on the tire. Air
pressure is expressed in pounds per
square inch (psi) or kilopascal (kPa).
Accessory Weight
This means the combined weight of
optional accessories. Some exam-
ples of optional accessories are
reduction gear, power seats, and air
conditioning.
Aspect Ratio
The relationship of a tire's height to
its width.
Belt
A rubber coated layer of cords that is
located between the plies and the
tread. Cords may be made from steel
or other reinforcing materials.
The temperature grade for this
tire is established for a tire that
is properly inflated and not
overloaded. Excessive speed,
under-inflation, over-inflation,
or excessive loading, either
separately or in combination,
can cause heat build-up and
possible sudden tire failure.
This may cause loss of vehicle
control resulting in an accident.
WARNING

888
Specifications & Consumer information
8
Specifications, Consumer information and Reporting safety defects
8
Dimensions ..............................................................8-2
Bulb Wattage ..........................................................8-3
Tires and Wheels ...................................................8-4
Volume and Weight ................................................8-5
Air Conditioning System........................................8-5
Recommended Lubricants and Capacities ..........8-6
Vehicle Identification Number (VIN) ...................8-7
Vehicle Certification Label....................................8-7
Tire Specification and Pressure Label................8-8
Motor Number ........................................................8-8
Refrigerant Label ...................................................8-8
Consumer Information ...........................................8-9
Reporting Safety Defects ...................................8-10

H13
Information
If the fuel filler door does not open
because ice has formed around it, tap
lightly or push on the door to break
the ice and release the door. Do not
pry on the door. If necessary, spray
around the door with an approved de-
icer fluid (do not use radiator anti-
freeze) or move the vehicle to a warm
place and allow the ice to melt.
Closing the fuel filler door
1. Cover the fuel filler with the cap.
2. Close the fuel filler door until it is
latched securely.i
If the fuel filler cap requires
replacement, use parts for
replacement from an author-
ized Hyundai dealer. An incor-
rect fuel filler cap can result in
a serious malfunction of the
fuel system. Contact an
authorized HYUNDAI dealer
for replacement.
If the fuel filler door is not
completely closed, the vehicle
is not turned on. Close the
fuel filler door and turn on the
vehicle.
WARNING
According to the hydrogen
fueling station condition the
hydrogen may not be filled
fully and the driving distance
may change accordingly. The
hydrogen may not be charged
fully if the fueling station does
not satisfy the fueling method
specified in the fueling. stan-
dard (SAE J2601) or if the
hydrogen is not enough in the
station, the fueling facility
has failure, etc.
Depending on the remaining
hydrogen in the vehicle and
ambient temperature, the time
required for fueling may vary.
More time may be required for
fueling if the remaining hydro-
gen level is low and the
weather is hot. Also, required
time may be longer if the
hydrogen cooling tempera-
ture of the fueling station is
high.
The distance to empty may
vary depending on the driving
environment (weather, traffic,
etc.) and driving method
(rapid acceleration, heating
and air conditioning, etc.).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 map
screen 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 must
be done by the person who has
completed the certification course
and training related to the high-
pressure gas. Self-refueling is pro-
hibited.

I-2
12V battery......................................................................7-27
Battery recharging ......................................................7-28
Reset Features ............................................................7-28
AC Inverter ...................................................................3-167
Accessing Your Vehicle ....................................................3-3
Smart Key.....................................................................3-3
Immobilizer System .....................................................3-9
Active Hood Lift System ................................................2-70
System activation .......................................................2-70
System limitation........................................................2-71
System malfunction ....................................................2-72
Air Bag - Advanced Supplemental Restraint System.....2-47
Where Are the Air Bags? ...........................................2-49
How Does the Air Bag System Operate? ...................2-52
What to Expect After an Air Bag Inflates ..................2-57
Occupant Classification System (OCS) .....................2-58
Why Didn't My Air Bag Go Off in a Collision?........2-60
SRS Care ....................................................................2-60
Additional Safety Precautions ....................................2-60
Air Bag Warning Labels.............................................2-60
Why Didn't My Air Bag Go Off in a Collision?........2-63
SRS Care ....................................................................2-68
Additional Safety Precautions ....................................2-69
Air Bag Warning Labels.............................................2-69Air Bag Warning Labels .................................................2-69
Air cleaner.......................................................................7-20
Filter Replacement .....................................................7-20
Air Conditioning System ..................................................8-5
Anti-lock Brake System (ABS) ......................................5-29
Appearance care..............................................................7-62
Exterior Care ..............................................................7-62
Interior Care ...............................................................7-67
Auto Hold .......................................................................5-25
Automatic Climate Control System..............................3-147
Automatic Temperature Control Mode ....................3-148
Manual Temperature Control Mode .........................3-148
System Operation .....................................................3-155
System Maintenance ................................................3-156
Before Driving ..................................................................5-4
Before Entering the Vehicle .........................................5-4
Before Starting .............................................................5-4
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
Index
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