NISSAN FRONTIER 2021 Owners Manual

Air recirculation button
ON position (Indicator light on)
Interior air is recirculated inside the vehicle.
Press the
button to the ON position
when:
• driving on a dusty road.
• to prevent traffic fumes from entering passenger compartment.
• for maximum cooling when using the air conditioner.
OFF position (Indicator light off )
Outside air is drawn into the passenger
compartment and distributed through the
selected outlet.
Use the OFF position for normal heater or
air conditioner operation.
A/C (air conditioner) button
Start the engine, turn thefan speed
control dial to the desired position and
press the
button to turn on the air
conditioner. To turn off the air conditioner,
press the
button again.
The air conditioner cooling function op-
erates only when the engine is running.
Rear window or outside mirror
defroster switch (if so equipped)
For additional information about the rear
window or outside mirror defroster switch,
refer to “Rear window or outside mirror de-
froster switch.” in the “Instruments and
controls” section of this manual.
HEATER OPERATION
Heating
This mode is used to direct heated air to
the foot outlets. Some air also flows from
the defrost outlets.
1. Press the
air flow control button.
2. Turn the
fan speed control dial to
the desired position.
3. Turn the temperature control dial to the desired position between the middle
and the hot position.
Ventilation
This mode directs outside air to the side
and center vents.
1. Press the
button to the OFF posi-
tion. The indicator light on thebut-
ton will go off.
2. Press the
air flow control button.
3. Turn the
fan speed control dial to
the desired position.
4. Turn the temperature control dial to the desired position.
Defrosting or defogging
This mode directs the air to the defrost
outlets to defrost/defog the windows.
1. Press the
defrost/defog button.
2. Turn the
fan speed control dial to
the desired position.
3. Turn the temperature control dial to the desired position between the middle
and the hot position.
• To quickly remove ice or fog from the win- dows, turn the
fan speed control dial
to the highest setting and the tempera-
ture control to the full HOT position.
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• When theposition is selected, the air
conditioner automatically turns on if the
outside temperature is more than 36°F
(2°C). This dehumidifies the air which
helps defog the windshield. The
mode automatically turns off, allowing
outside air to be drawn into the passen-
ger compartment to further improve the
defogging performance. The recircula-
tion mode cannot be activated in the
position.
Bi-level heating
The bi-level mode directs warmed air to
the side and center vents and to the front
and rear floor outlets.
1. Press the
button to the OFF posi-
tion. The indicator light on thebut-
ton will go off.
2. Press the
air flow control button.
3. Turn the
fan speed control dial to
the desired position.
4. Turn the temperature control dial to the desired position.
Heating and defogging
This mode heats the interior and defogs
the windshield.
1. Press the
air flow control button.
2. Turn the
fan speed control dial to
the desired position.
3. Turn the temperature control dial to the desired position between the middle
and the hot position.
• When the
position is selected, the
air conditioner automatically turns on if
the outside temperature is more than
36°F (2°C). If the
air flow control
button is selected for more than 1 minute,
the air conditioning system will continue
to operate until the
fan speed con-
trol dial is turned to OFF, the vehicle is
shut off, or the A/C button is used to turn
off the compressor even if the air flow
control dial is turned to a position other
than the
position. This dehumidi-
fies the air which helps defog the wind-
shield. The
mode automatically
turns off, allowing outside air to be drawn
into the passenger compartment to fur-
ther improve the defogging perfor-
mance.
Operating tips
Clear snow and ice from the wiper blades
and air inlet in front of the windshield.
This improves heater operation.
AIR CONDITIONER OPERATION
Start the engine, turn thefan speed
control dial to the desired position, and
press the
button to activate the air
conditioner. When the air conditioner is on,
cooling and dehumidif ying functions are
added to the heater operation.
The air conditioner cooling function op-
erates only when the engine is running.
Cooling
This mode is used to cool and dehumidif y
the air.
1. Press the
button to the OFF
position.
2. Press the
air flow control button.
3. Turn the
fan speed control dial to
the desired position.
4. Press the
button.
5. Turn the temperature control dial to the desired position.
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• For quick cooling when the outside tem-perature is high, press thebutton to
the ON position. Be sure to return the
to the OFF position for normal cool-
ing. The indicator light on thebutton
will go off. You may also select MAX A/C
for quick cooling.
Dehumidified heating
This mode is used to heat and dehumidif y
the air.
1. Press the
air flow control button.
2. Turn the
fan speed control dial to
the desired position.
3. Press the
button on.
4. Turn the temperature control dial to the desired position.
Dehumidified defogging
This mode is used to defog the windows
and dehumidif y the air.
1. Press the
air flow control button.
2. Turn the
fan speed control dial to
the desired position. • When the
orare selected, the
air conditioner automatically turns on if
the outside temperature is more than 36°
F (2° C). This dehumidifies the air which
helps defog the windshield. The
mode automatically turns off, allowing
outside air to be drawn into the passen-
ger compartment to further improve the
defogging performance.
• The air conditioner is always on in the
mode, regardless of whether the in-
dicator light is on or off.
3. Turn the temperature control dial to the desired position.
Operating tips
• Keep the windows and moonroof (if soequipped) closed while the air condi-
tioner is in operation.
• Af ter parking in the sun, drive for two or three minutes with the windows open to
vent hot air from the passenger com-
partment. Then, close the windows. This
allows the air conditioner to cool the inte-
rior more quickly. •
The air conditioning system should be
operated for approximately 10 minutes
at least once a month. This helps pre-
vent damage to the system due to lack
of lubrication.
• A visible mist may be seen coming from the ventilators in hot, humid conditions
as the air is cooled rapidly. This does not
indicate a malfunction.
• If the engine coolant temperature
gauge indicates engine coolant tem-
perature over the normal range, turn
the air conditioner off. For additional
information, refer to “If your vehicle
overheats” in the “In case of emer-
gency ” section of this manual.AIR FLOW CHARTS
The following charts show the button and
dial positions for MAXIMUM AND QUICK
heating, cooling or defrosting. The air re-
circulation (
) button should always
be in the OFF position for heating and
defrosting.
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WHA0916LHA4443
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LHA4444LHA4453

LHA4446
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1. Driver temperature control dial
2. A/C (air conditioner) button
3.
Front window defroster button
4.
Fan speed control dial
5. OFF button
6.
Fresh air intake button 7.
Air recirculation button
8. Passenger temperature control dial
9. DUAL button
10. Air flow control buttons
11. AUTO button
LHA2886
Type A (if so equipped)
HEATER AND AIR CONDITIONER
(automatic) (if so equipped)
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1. Driver temperature control dial
2. A/C (air conditioner) button
3.
Front window defroster button
4.
Fan speed control dial
5. OFF button
6.
Rear window defroster switch 7.
Air recirculation button
8. Passenger temperature control dial
9. DUAL button
10. Air flow control buttons
11. AUTO button
LHA2611
Type B (if so equipped)

1. Driver temperature control dial
2. A/C (air conditioner) button
3.
Front window defroster button
4.
Fan speed control dial
5. OFF button
6.
Outside mirror defroster switch 7.
Air recirculation button
8. Passenger temperature control dial
9. DUAL button
10. Air flow control buttons
11. AUTO button
LHA3168
Type C (if so equipped)
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NOTE:
• Odors from inside and outside the ve-hicle can build up in the air conditioner
unit. Odor can enter the passenger
compartment through the vents.
• When parking, set the heater and air conditioner controls to turn off air re-
circulation to allow fresh air into the
passenger compartment. This should
help reduce odors inside the vehicle.
AUTOMATIC OPERATION
Cooling or heating (auto)
This mode may be normally used all year
round as the system automatically works
to keep a constant temperature. Air flow
distribution and fan speed are also con-
trolled automatically.
1. Press the AUTO button on.
2. Turn the temperature dial to the lef t or right to set the desired temperature.
Driver and passenger temperatures can
be set independently. Press DUAL to ac-
tivate dual climate control functions.
Turn the passenger's side temperature
control dial to the lef t or right to set the
desired passenger's temperature. • Adjust the temperature dial to about 75°F
(24°C) for normal operation.
• The temperature of the passenger com- partment will be maintained automati-
cally. Air flow distribution, fan speed and
A/C on/off are also controlled automati-
cally.
• A visible mist may be seen coming from the vents in hot, humid conditions as the
air is cooled rapidly. This does not indicate
a malfunction.
Heating (A/C OFF)
The air conditioner does not activate. When
you need to heat only, use this mode.
1. Press the AUTO button.
2. Turn the temperature control dial to set the desired temperature.
• The temperature of the passenger com- partment will be maintained automati-
cally. Air flow distribution and fan speed
are also controlled automatically.
• Do not set the temperature lower than the outside air temperature. Otherwise,
the system may not work properly.
• Not recommended if windows fog up.
Dehumidified defrosting or
defogging
1. Push thedefroster control switch
to turn the system on. The indicator light
in the button will illuminate.
2. Turn the temperature dial to the lef t or right to set the desired temperature.
• To quickly remove ice from the outside of the windows, turn the manual fan control
to the maximum position.
• As soon as possible af ter the windshield is clean, press the AUTO button to return
to the auto mode.
• When the
control is activated, the air
conditioner will automatically be turned
on at outside temperatures above 36°F
(2°C). If in defrost mode for more than 1
minute, the air conditioning system will
continue to operate until the fan control
is turned OFF, the vehicle is shut off or the
A/C button is used to turn off the com-
pressor even if an air flow button other
than
is selected. This dehumidifies
the air which helps defog the windshield.
The air recirculation mode automatically
turns off, allowing outside air to be drawn
into the passenger compartment to fur-
ther improve the defogging perfor-
mance.
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