2021 NISSAN FRONTIER cooling

CONTROLS
1.Fan speed control dial
2.
Front window defroster button
3.
Outside mirror defroster switch (if
so equipped)
4.
Air recirculation button 5. Temperature control dial
6. Max A/C button
7. Air flow control buttons
8. A/C (air conditioner) button
Fan speed control dial
Thefan speed control dial turns the
fan on and off, and controls fan speed.
Air flow control buttons
The air flow control dial or buttons allow
you to select the air flow outlets.
MAX A/C — Air flows from center and side
vents with maximum cooling
(air conditioning).
— Air flows from center and sidevents.
— Air flows from center and sidevents and foot outlets.
— Air flows mainly from foot out-lets.
— Air flows from defroster out-lets and foot outlets.
— Air flows mainly from de-froster outlets.
Temperature control dial
The temperature control dial allows you to
adjust the temperature of the outlet air. To
lower the temperature, turn the dial to the
lef t. To increase the temperature, turn the
dial to the right.
LHA3167
Type B (if so equipped)

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.
Monitor, climate, audio, phone and voice recognition systems4-25

• 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.
4-26Monitor, climate, audio, phone and voice recognition systems

• 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.
Monitor, climate, audio, phone and voice recognition systems4-27

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.
4-34Monitor, climate, audio, phone and voice recognition systems

MANUAL OPERATION
Fan speed control
Turn thefan speed control dial to
manually control the fan speed.
Press the AUTO button to return to auto-
matic control of the fan speed.
Air recirculation
Press the air recirculation buttonto
recirculate interior air inside the vehicle.
Press the AUTO button to return to auto-
matic mode.
The air recirculation cannot be activated
when the air conditioner is in the
front
defogging mode.
Fresh air intake (if so equipped)
Press thefresh air intake button to
draw outside air into the passenger com-
partment. The
indicator light on the
button will come on.
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.
Air flow control
Press the air flow control buttons to manu-
ally control air flow and select the air outlet:
— Air flows from center and side
vents.
— Air flows from center and sidevents and foot outlets.
— Air flows mainly from foot outlets.— Air flows from defroster and footoutlets.
— Air flows from defroster outlets.
To turn system off
Press the OFF button.
Rear window or outside mirror
defroster switch (if so equipped)
For additional information, refer to “Rear
window or outside mirror defroster switch”
in the “Instruments and controls” section of
this manual.
OPERATING TIPS
The sunload sensorO1, located on the top
center of the instrument panel, helps the
system maintain a constant temperature.
Do not put anything on or around this sen-
sor.
• When the engine coolant temperature and outside air temperature are low, the
air flow from the foot outlets may not
operate for a maximum of 150 seconds.
However, this is not a malfunction. Af ter
the coolant temperature warms up, air
flow from the foot outlets will operate
normally.
LIC0515

3.Use Air Conditioning (A/C) at Higher
Vehicle Speeds
• Below 40 mph (64 km/h), it is more efficient to open windows to cool the
vehicle due to reduced engine load.
• Above 40 mph (64 km/h), it is more efficient to use A/C to cool the vehicle
due to increased aerodynamic drag.
• Recirculating the cool air in the cabin when the A/C is on reduces cooling
load.
4. Drive at Economical Speeds and
Distances
• Observing the speed limit and not ex- ceeding 60 mph (97 km/h) (where le-
gally allowed) can improve fuel effi-
ciency due to reduced aerodynamic
drag.
• Maintaining a safe following distance behind other vehicles reduces unnec-
essary braking.
• Safely monitoring traffic to anticipate changes in speed permits reduced
braking and smooth acceleration
changes.
• Select a gear range suitable to road conditions. 5.
Use Cruise Control
• Using cruise control during highway driving helps maintain a steady speed.
• Cruise control is particularly effective in providing fuel savings when driving
on flat terrains.
6. Plan for the Shortest Route
• Utilize a map or navigation system to determine the best route to save time.
7. Avoid Idling
• Shutting off your engine when safe for stops exceeding 30–60 seconds saves
fuel and reduces emissions.
8. Buy an Automated Pass for Toll Roads
• Automated passes permit drivers to use special lanes to maintain cruising
speed through the toll and avoid stop-
ping and starting. 9.
Winter Warm Up
• Limit idling time to minimize impact to fuel economy.
• Vehicles typically need no more than 30 seconds of idling at start-up to ef-
fectively circulate the engine oil before
driving.
• Your vehicle will reach its ideal operat- ing temperature more quickly while
driving versus idling.
10. Keeping your Vehicle Cool
• Park your vehicle in a covered parking area or in the shade whenever pos-
sible.
• When entering a hot vehicle, opening the windows will help to reduce the
inside temperature faster, resulting in
reduced demand on your A/C system.
5-22Starting and driving

FREEING A FROZEN DOOR LOCK
To prevent a door lock from freezing, apply
de-icer through the key hole. If the lock
becomes frozen, heat the key before in-
serting it into the key hole or use the re-
mote keyless entry key fob (if so equipped).
ANTIFREEZE
In the winter when it is anticipated that the
temperature will drop below 32°F (0°C),
check the antifreeze to assure proper win-
ter protection. For additional information,
refer to “Engine cooling system” in the “Do-
it-yourself ” section of this manual.
BATTERY
If the battery is not fully charged during ex-
tremely cold weather conditions, the battery
fluid may freeze and damage the battery. To
maintain maximum efficiency, the battery
should be checked regularly. For additional
information, refer to “Battery” in the “Do-it-
yourself ” section of this manual.
DRAINING OF COOLANT WATER
If the vehicle is to be lef t outside without
antifreeze, drain the cooling system, includ-
ing the engine block. Refill before operating
the vehicle. For additional information, refer
to “Changing engine coolant” in the “Do-it-
yourself ” section of this manual.
TIRE EQUIPMENT
1. SUMMER tires have a tread designed toprovide superior performance on dry
pavement. However, the performance of
these tires will be substantially reduced
in snowy and icy conditions. If you oper-
ate your vehicle on snowy or icy roads,
NISSAN recommends the use of MUD &
SNOW or ALL SEASON TIRES on all four
wheels. It is recommended that you visit
a NISSAN dealer for the tire type, size,
speed rating and availability information.
2. For additional traction on icy roads, studded tires may be used. However,
some U.S. states and Canadian prov-
inces prohibit their use. Check local,
state and provincial laws before install-
ing studded tires.
Skid and traction capabilities of studded
snow tires on wet or dry surfaces may be
poorer than that of non-studded snow
tires.
3. Tire chains may be used. For additional information, refer to “Tire chains” in the
“Do-it-yourself ” section of this manual.
SPECIAL WINTER EQUIPMENT
It is recommended that the following items
be carried in the vehicle during winter:
• A scraper and stiff-bristled brush to re-move ice and snow from the windows
and wiper blades.
• A sturdy, flat board to be placed under the jack to give it firm support.
• A shovel to dig the vehicle out of snow- drif ts.
• Extra washer fluid to refill the windshield- washer fluid reservoir.
DRIVING ON SNOW OR ICE