2021 INFINITI QX80 heater

4-30Monitor, climate, audio, phone and voice recognition systems
“AUTO” will appear on the Climate
screen.
2. Push the temperature control buttons (driver’s side) to set the preferred tem-
perature.
.When the DUAL mode is turned on,you can individually set temperatures
for the driver’s side and front passen-
ger’s side, using the temperature
control buttons on the corresponding
side. (To turn on the DUAL mode,
touch the "DUAL" key.)
.The temperature of the passengercompartment will be maintained
automatically. Air flow distribution
and fan speed will also be controlled
automatically.
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.
Heating (A/C off):
The air conditioner does not activate in this
mode. Use this mode when you only need to
heat.
1. Push the CLIMATE button. The Climate screen will be displayed on
the lower display.
2. Touch the "A/C" key. The "A/C" indica- tor will turn off. See “Operations on touch panel screen” (P.4-31).
3. Push the temperature control buttons (driver’s side) to set the preferred tem-
perature.
.When the DUAL mode is turned on,you can individually set temperatures
for the driver’s side and front passen-
ger’s side, using the temperature
control buttons on the corresponding
side. (To turn on the DUAL mode,
touch the "DUAL" key.)
.The temperature of the passengercompartment will be maintained
automatically. Air flow distribution
and fan speed will also be controlled
automatically.
NOTE:
. Do not set the temperature lower than
the outside air temperature. Otherwise
the system may not work properly.
. This mode is not recommended if the
windows fog up.
Dehumidified defrosting/defogging:
1. Push the “
” front defroster button.
The indicator light on the button will
illuminate.
2. Push the temperature control buttons on the driver’s side to set the preferred
temperature. NOTE:
.
To quickly remove ice from the outside
of the windows, push the “
” fan
speed increase button and set it to the
maximum position.
. As soon as possible after the windshield
is cleaned, push the AUTO button to
return to the AUTO mode.
. When the “
” front defroster button
is pushed, the air conditioner will auto-
matically be turned on at outside tem-
peratures above 23°F (-5°C) to defog
the windshield, and the air recirculate
mode will automatically be turned off.
The outside air circulation mode will be
selected to improve the defrosting per-
formance.
Manual operation
The manual mode can be used to control the
heater and air conditioner to your desired
settings.
Fan speed control:
Push the “
” fan speed increase button
to increase the fan speed.
Push the “
” fan speed decrease button to
decrease the fan speed.
Push the AUTO button to change the fan
speed to the automatic mode.

Air flow control:
Push the “
” manual air flow control
button to change the air flow mode.
: Air flows from the center and side
ventilators.
: Air flows from the center and sideventilators, and foot outlets.
: Air flows mainly from the foot outlets.
: Air flows from the defroster and footoutlets.
Temperature control:
Push the “
” temperature control increase
button or the “” temperature control
decrease button to set the desired tempera-
ture.
When the DUAL mode is on, you can
individually set temperatures for the driver’s
side and front passenger’s side.
Air intake control:
. Push the “
” air recirculation button to
recirculate interior air inside the vehicle.
The indicator light on the “
” air
recirculation button will illuminate.
. Push the “
” air recirculation button
twice to draw outside air into the
passenger compartment. The indicator
light on the “
” air recirculation button
will turn off. .
To control the air intake automatically,
push and hold the “
” air recirculation
button. The indicator light will blink, and
then the air intake will switch to auto-
matic control.
The air intake mode can also be con-
trolled automatically by touching the
"Auto Recirc" key (if so equipped). The
indicator light on the "Auto Recirc" key
will illuminate. (See “Advanced Climate
Control System” (P.4-32).)
Turning the system off
Push the ON/OFF button.
Operations on touch panel screen
Heater and air conditioner can be operated
on the touch panel screen. Push the CLI-
MATE button and switch the lower display
to the Climate screen.
For details of the touch panel operation on
the lower display, see the separate INFINITI
InTouch
TMOwner’s Manual.
WAE0263X
Example
The following control keys are available.
(Availability of the item depends on the
model and specifications.)
Available items:
. “
”
Touch to change the air flow mode.
. “-
”/“+”
Touch to change the fan speed.
. “Rear CLIMATE”
Touch to display the Rear climate screen.
(See “Touch panel operation” (P.4-34).)
. “DUAL”
Touch to turn the DUAL mode on/off.
(See “DUAL mode setting” (P.4-32).)
Monitor, climate, audio, phone and voice recognition systems4-31

an INFINITI retailer for this service.
The filter should be replaced if the air flow
decreases significantly or if windows fog up
easily when operating the heater or air
conditioner.
SERVICING CLIMATE CONTROL
The climate control system in your vehicle is
charged with a refrigerant designed with the
environment in mind.This refrigerant will
not harm the earth’s ozone layer. However,
special charging equipment and lubricant are
required when servicing your air conditioner.
Using improper refrigerants or lubricants will
cause severe damage to your climate control
system. (See “Capacities and recommended
fluids/lubricants” (P.10-2) for climate con-
trol system refrigerant and lubricant recom-
mendations.)
An INFINITI retailer will be able to service
your environmentally friendly climate control
system.
WARNING
The system contains refrigerant under
high pressure. To avoid personal injury,
any air conditioner service should be
done only by an experienced technician
with the proper equipment.
WINDOW ANTENNA
The antenna pattern is printed inside the 3rd
row seat window.
CAUTION
. Do not place metalized film near the
3rd row seat window or attach any
metal parts to it. This may cause poor
reception or noise.
. When cleaning the inside of the 3rd
row seat window, be careful not to
scratch or damage the 3rd row seat
window antenna. Lightly wipe along
the antenna with a dampened soft
cloth.
Monitor, climate, audio, phone and voice recognition systems4-37
ANTENNA

4WD shift switch .................................................... 5-117
4WD shift indicator ................................................ 5-118
4WD warning light ................................................. 5-118
Hill Start Assist system .............................................. 5-120
Parking/parking on hills .............................................. 5-121
TOW mode ..................................................................... 5-122
SNOW mode .................................................................. 5-122
Power steering .............................................................. 5-123
Brake system .................................................................. 5-123 Braking precautions ................................................ 5-123
Parking brake break-in .......................................... 5-123
Brake assist ................................................................... 5-124 Brake assist .............................................................. 5-124
Anti-lock Braking System (ABS) ........................ 5-124 Vehicle Dynamic Control (VDC) system ................ 5-125
Vehicle Dynamic Control (VDC)
OFF switch ............................................................. 5-127
Cold weather driving .................................................. 5-128
Freeing a frozen door lock ................................ 5-128
Antifreeze ............................................................... 5-128
Battery .................................................................... 5-128
Draining of coolant water ................................. 5-128
Tire equipment ...................................................... 5-128
Special winter equipment .................................. 5-128
Driving on snow or ice ........................................ 5-128
Engine block heater (if so equipped) ............... 5-129

.Allow more stopping distance under
these conditions. Braking should be
started sooner than on dry pave-
ment.
. Allow greater following distances on
slippery roads.
. Watch for slippery spots (glare ice).
These may appear on an otherwise
clear road in shaded areas. If a patch
of ice is seen ahead, brake before
reaching it. Try not to brake while on
the ice, and avoid any sudden steer-
ing maneuvers.
. Do not use the cruise control on
slippery roads.
. Snow can trap dangerous exhaust
gases under your vehicle. Keep snow
clear of the exhaust pipe and from
around your vehicle.
ENGINE BLOCK HEATER (if so
equipped)
Engine block heaters are used to assist in
cold temperature starting.
The engine block heater should be used
when the outside temperature is 20°F
(−7°C) or lower.
To use the engine block heater
1. Turn the engine off.
2. Open the hood and unwrap the engine
block heater cord.
3. Plug the engine block heater cord into a grounded 3-wire, 3-pronged extension
cord.
4. Plug the extension cord into a Ground Fault Interrupt (GFI) protected,
grounded 110-volt AC (VAC) outlet.
5. The engine block heater must be plugged in for at least 2 - 4 hours, depending on
outside temperatures, to properly warm
the engine coolant. Use an appropriate
timer to turn the engine block heater on.
6. Before starting the engine, unplug and properly store the cord to keep it away
from moving parts.
WARNING
.Do not use your engine block heater
with an ungrounded electrical system
or a 2-pronged adapter. You can be
seriously injured by an electrical
shock if you use an ungrounded
connection.
. Disconnect and properly store the
engine block heater cord before starting the engine. Damage to the
cord could result in an electrical shock
and can cause serious injury.
. Use a heavy-duty 3-wire, 3-pronged
extension cord rated for at least 10A.
Plug the extension cord into a Ground
Fault Interrupt (GFI) protected,
grounded 110-VAC outlet. Failure
to use the proper extension cord or
a grounded outlet can result in a fire
or electrical shock and cause serious
personal injury.
Starting and driving5-129

6-12In case of emergency
industrial safety spectacles) and re-
move rings, metal bands, or any other
jewelry. Do not lean over the battery
when jump starting.
. Do not attempt to jump start a
frozen battery. It could explode and
cause serious injury.
. Your vehicle has an automatic engine
cooling fan. It could come on at any
time. Keep hands and other objects
away from it.
JVE0495X
WARNING
Always follow the instructions below.
Failure to do so could result in damage to
the charging system and cause personal
injury.
1. Remove the engine compartment cover, if necessary. See “Engine compartment
check locations” (P.8-3).
2. If the booster battery is in another vehicle
, position the two vehicles (and) to bring their batteries into close
proximity to each other. Do not allow the two vehicles to touch.
3. Apply parking brake. Move the shift lever to the P (Park) position. Switch off all
unnecessary electrical systems (light,
heater, air conditioner, etc.).
4. Remove vent caps on the battery (if so equipped). Cover the battery with a
firmly wrung out moist cloth
to reduce
explosion hazard.
5. Connect jumper cables in the sequence as illustrated (
???).

6-14In case of emergency
CAUTION
.Do not continue to drive if your
vehicle overheats. Doing so could
cause engine damage or a vehicle fire.
. To avoid the danger of being scalded,
never remove the radiator cap or
coolant reservoir cap while the en-
gine is still hot. When the radiator
cap or coolant reservoir cap is re-
moved, pressurized hot water will
spurt out, possibly causing serious
injury.
. Do not open the hood if steam is
coming out.
If your vehicle is overheating (indicated by an
extremely high temperature gauge reading),
or if you feel a lack of engine power, detect
abnormal noise, etc., take the following
steps:
1. Move the vehicle safely off the road, apply the parking brake and move the
shift lever to the P (Park) position.
Do not stop the engine.
2. Turn off the climate control. Open all the windows, move the heater or air condi-
tioner temperature control to maximum
hot and fan control to high speed. 3. If engine overheating is caused by climb-
ing a long hill on a hot day, run the engine
at a fast idle (approximately 1,500 rpm)
until the temperature gauge indication
returns to normal.
4. Get out of the vehicle. Look and listen for steam or coolant escaping from the
radiator before opening the hood. (If
steam or coolant is escaping, turn off the
engine.) Do not open the hood further
until no steam or coolant can be seen.
5. Open the engine hood.
WARNING
If steam or water is coming from the
engine, stand clear to prevent getting
burned.
6. Visually check drive belts for damage or looseness. Also check if the cooling fan is
running. The radiator hoses and radiator
should not leak water. If coolant is
leaking or the cooling fan does not run,
stop the engine.
WARNING
Be careful not to allow your hands, hair,
jewelry or clothing to come into contact
with, or get caught in, engine belts or the
engine cooling fan. The engine cooling
fan can start at any time.
7. After the engine cools down, check the coolant level in the reservoir tank with
the engine running. Add coolant to the
reservoir tank if necessary. Have your
vehicle repaired. It is recommended you
visit an INFINITI retailer for this service.
IF YOUR VEHICLE OVERHEATS

JVM0744X
CHECKING ENGINE COOLANT
LEVEL
Check the coolant levelin the reservoir
when the engine is cold. If the coolant level
is below MIN
, open the reservoir tank cap
and add coolant up to the MAXlevel. If the
reservoir tank is empty, check the coolant
level in the radiator when the engine is cold.
If there is insufficient coolant in the radiator,
fill the radiator with coolant up to the filler
opening and also add it to the reservoir tank
up to the MAX level
.
Tighten the cap securely after adding engine
coolant.
If the cooling system requires coolant fre- quently, have it checked. It is recommended
you visit an INFINITI retailer for this
service.
CHANGING ENGINE COOLANT
It is recommended that major cooling system
repairs be performed by an INFINITI retailer.
The service procedures can be found in the
appropriate INFINITI Service Manual.
Improper servicing can result in reduced
heater performance and engine overheat-
ing.
WARNING
.
To avoid the danger of being scalded,
never change the coolant when the
engine is hot.
. Never remove the radiator cap or
coolant reservoir cap when the en-
gine is hot. Serious burns could be
caused by high pressure fluid escap-
ing from the radiator.
. Avoid direct skin contact with used
coolant. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.
. Keep coolant out of reach of children
and pets. Engine coolant must be disposed of prop-
erly. Check your local regulations.
Do-it-yourself8-5