cooling INFINITI QX50 2019 Owner's Manual

Thebutton will be on the INFINITI In-
telligent Key if the vehicle has Remote Engine
Start. This feature allows the engine to start
from outside the vehicle.
The following features may be affected
when Remote Engine Start is used:
∙ Vehicles with an automatic climate con- trol system will default to either a heating
or cooling mode depending on outside
and cabin temperatures. For additional
information, refer to “Remote Engine
Start with Intelligent Climate Control” in
the “Monitor, climate, audio, phone and
voice recognition systems” section of this
manual. Laws in some local communities may restrict
the use of remote starters. For example,
some laws require a person using Remote
Engine Start to have the vehicle in view.
Check local regulations for any requirements.
Other conditions may affect the function of
the Remote Engine Start feature. For addi-
tional information, refer to “Conditions the
Remote Engine Start will not work” in this
section.
Other conditions can affect the performance
of the Intelligent Key transmitter. For addi-
tional information, refer to “INFINITI Intelli-
gent Key” in this section.
REMOTE ENGINE START
OPERATING RANGE
WARNING
To help avoid risk of injury or death through
unintended operation of the vehicle and/or
its systems, including entrapment in win-
dows or inadvertent door lock activation,
do not leave children, people who require
the assistance of others or pets unattended
in your vehicle. Additionally, the tempera-
ture inside a closed vehicle on a warm day
can quickly become high enough to cause a
significant risk of injury or death to people
and pets.
CAUTION
When the Intelligent Key battery is dis-
charged or other strong radio wave sources
are present near the operating location, the
Intelligent Key operating range becomes
narrower, and the Intelligent Key may not
function properly.
The Remote Engine Start function can only
be used when the Intelligent Key is within the
specified operating range from the vehicle.
The Remote Engine Start operating range is
approximately 197 ft (60 m) from the vehicle.
LPD2272
REMOTE ENGINE START (if so
equipped)
Pre-driving checks and adjustments3-21

1. Lower touch-screen display (lowerdisplay)
2.
Temperature control increase
button (passenger’s side)
3.
Temperature control decrease
button (passenger’s side) 4.
Air recirculation button
5.
Front defroster button
6.
Rear window and outside mir-
ror (if so equipped) defroster switch
7. ON-OFF button
8.
CLIMATE button 9.
MENU button
10.
Manual air flow control button
11.
Fan speed decrease button
12.
Fan speed increase button
13. AUTO button
14.
Temperature control decrease
button (driver’s side)
15.
Temperature control increase
button (driver’s side)
WARNING
∙ The air conditioner cooling function op- erates only when the engine is running.
∙ Do not leave children or adults who would normally require the assistance of
others alone in your vehicle. Pets should
also not be left alone. They could acciden-
tally injure themselves or others through
inadvertent operation of the vehicle.
Also, on hot, sunny days, temperatures in
a closed vehicle could quickly become
high enough to cause severe or possibly
fatal injuries to people or animals.
∙ Do not use the recirculation mode for long periods as it may cause the interior
air to become stale and the windows to
fog up.
LHA4574
HEATER AND AIR CONDITIONER
(automatic)
4-36Monitor, climate, audio, phone and voice recognition systems

Start the engine and operate the controls to
activate the air conditioner.
NOTE:∙ Odors from inside and outside the vehicle can build up in the air conditioner unit.
Odor can enter the passenger compart-
ment through the vents.
∙ When parking, set the heater and air con- ditioner controls to turn off air recircula-
tion to allow fresh air into the passenger
compartment. This should help reduce
odors inside the vehicle.
AUTOMATIC OPERATION
Press the AUTO button to set the automatic
control mode that keeps the air distribution,
temperature and the fan speed automati-
cally.
Cooling and/or dehumidified
heating (AUTO)
This mode may be used all year round as the
system automatically works to keep a con-
stant temperature. Air flow distribution, air
intake control, and fan speed are also con-
trolled automatically. 1. Press the
CLIMATE button on the
lower display menu. The CLIMATE
screen will display on the lower display.
2. Press the AUTO button on. (The indica- tor on the button will illuminate and
AUTO will be displayed on the CLIMATE
screen.)
3. Press the
temperature con-
trol buttons on the driver’s side to set the
desired temperature.
∙ The temperature of the passenger com- partment will be maintained automati-
cally. Air flow distribution, air intake con-
trol and fan speed are also controlled
automatically.
∙ A visible mist may be seen coming from the vents in hot, humid conditions as the
air is cooled rapidly. This does not indi-
cate a malfunction.
Dehumidified defrosting or
defogging
1. Press thefront defroster button
on. (The indicator light on the button will
come on.) 2. Operate the
temperature
control buttons to set the desired tem-
perature.
∙ To quickly remove ice from the outside of the windows, use the
fan speed
control button or the
key to set the
fan speed to maximum.
∙ As soon as possible after the windshield is clean, press the AUTO button to return
to the automatic mode.
∙ When the
front defroster button is
pressed, the air conditioner will auto-
matically be turned on at outside tem-
peratures approximately 32°F (0°C) to
defog the windshield. The air recirculate
mode automatically turns off, allowing
outside air to be drawn into the passen-
ger compartment to further improve the
defogging performance.
Remote Engine Start with
Intelligent Climate Control (if so
equipped)
Vehicles equipped with automatic climate
controls and Remote Engine Start function
may go into automatic heating or cooling
mode when Remote Engine Start is activated
depending on outside and cabin tempera-
Monitor, climate, audio, phone and voice recognition systems4-37

tures. During this period, the climate control
display and buttons will be inoperable until
the ignition switch is turned on. In Remote
Engine Start defrosting mode, the rear win-
dow defroster, heated seat (if so equipped)
and heated steering wheel (if so equipped)
may be activated automatically. In Remote
Engine Start cooling mode, the climate con-
trolled seat (if so equipped) may be activated
automatically.
Voice Recognition logic (if so
equipped)
When the climate control system is on, the
fan speed may be automatically lowered so
that commands are more easily recognized.
Fan speed can be adjusted using the
fan
speed decrease and
increase buttons, if
desired.
MANUAL OPERATION
Fan speed control
Press thefan speed increase andfan speed decrease buttons to manually con-
trol the fan speed. Fan speed can also be
controlled by touching the
orkeys
on the lower display.
Press the AUTO button to return to auto-
matic control of the fan speed.
Temperature control
Press thetemperature control
buttons up or down to set the desired tem-
perature.
The temperature can be set within the fol-
lowing range:
∙ For U.S.: 60 to 90ºF (16 to 32ºC)
∙ For Canada: 64 to 90ºF (18 to 32ºC)
Air recirculation
Press theair recirculation button to re-
circulate interior air inside the vehicle.
The
indicator light on the button will
come on.
The air recirculation cannot be activated
when the air conditioner is in the
front
defrosting mode.
When the outside temperature exceeds 70°F
(21°C), the air conditioning system may de-
fault to air recirculation mode automatically
to reduce overall power consumption. To exit
air recirculation mode, deselect the
air
recirculation button (indicator will turn off) to
enter fresh air mode.
Automatic intake air control
In the AUTO mode, the intake air will be
controlled automatically. To manually control
the intake air, press the
air recirculation
button. To return to the automatic control
mode, press and hold the
air recircula-
tion button for about 2 seconds. The indica-
tor light will flash twice, and then the intake
air will be controlled automatically.
Air flow control
Press thebutton to manually control
air flow. Pressing the button repeatedly will
cycle through the available modes and dis-
play the corresponding icon on the lower dis-
play. Air flow can also be controlled by touch-
ing the
key on the lower display:
— Air flows from center and side
vents.
— Air flows from center and sidevents and foot outlets.
— Air flows mainly from footoutlets.
— Air flows from defroster andfoot outlets.
To turn system off
Press the ON-OFF button.
4-38Monitor, climate, audio, phone and voice recognition systems

CLIMATE SETTING SCREEN
Climate control settings can be changed on
the screen.
Available setting items may vary depending
on models and specifications.
Press the
CLIMATE button on the
lower display menu. The CLIMATE screen
will display on the lower display.
Heating (A/C off)
The air conditioner does not activate in this
mode. When you need to heat only, use this
mode. 1. Press the
CLIMATE button.
2. If the Climate system is off, press the ON-OFF button to turn the system on.
3. If the
A/C indicator is on, touch
the
A/C key to turn the A/C off.
4. Press the
temperature con-
trol buttons on the driver’s side to set the
desired temperature.
∙ When in AUTO mode, the temperature of the passenger compartment will be
maintained automatically. Air flow distri-
bution and fan speed are also controlled
automatically.
∙ Do not set the temperature lower than the outside air temperature or the system
may not work properly.
∙ This procedure is not recommended if windows fog up.
When the outside temperature decreases to
approximately 32°F (0°C), the A/C function
does not activate even if the
A/C indi-
cator light illuminates.
Air conditioning (A/C)
Touch theA/C key to turn the A/C
mode on or off. Turn on the A/C mode for effective cooling and dehumidifying. When
the A/C indicator light is on, the A/C mode is
on.
Sync mode setting
The driver’s, passenger’s and rear (if so
equipped) temperature setpoints can be syn-
chronized using the
SYNC key on the
lower display. When the key is touched, tem-
perature settings become synchronized and
the SYNC indicator turns on.
∙ If the driver’s side temperature buttons are pressed, the driver’s side, passenger’s
side, and rear (if so equipped) tempera-
ture settings will update simultaneously.
∙ If the passenger’s side or rear (if so equipped) temperature buttons are
pressed, Sync mode will exit, the indicator
light will go off, and the temperature will
update based on the button pressed.
Driver’s side temperature will remain the
same until manually changed.
Steering wheel heater (if so
equipped)
Touch theSteering Heater key on the
CLIMATE screen on the lower display to turn
the steering wheel heater on or off. When the
steering wheel heater is on, the indicator light
is on.
LHA4579
4-40Monitor, climate, audio, phone and voice recognition systems

Follow these easy-to-use Fuel Efficient Driv-
ing Tips to help you achieve the most fuel
economy from your vehicle.1. Use Smooth Accelerator and Brake
Pedal Application
∙ Avoid rapid starts and stops.
∙ Use smooth, gentle accelerator and brake application whenever possible.
∙ Maintain constant speed while com- muting and coast whenever possible.
2. Maintain Constant Speed
∙ Look ahead to try and anticipate and minimize stops.
∙ Synchronizing your speed with traffic lights allows you to reduce your num-
ber of stops.
∙ Maintaining a steady speed can mini- mize red light stops and improve fuel
efficiency.
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 Dis-
tances
∙ 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.
FUEL EFFICIENT DRIVING TIPS
Starting and driving5-171

Do not attach stickers (including transparent
material), install accessories or apply addi-
tional paint near the sonar sensors.
Do not strike or damage the area around the
sonar sensors. It is recommended that you
visit an INFINITI retailer if the area around
the sonar sensors is damaged due to a colli-
sion.FREEING A FROZEN DOOR LOCK
To prevent a door lock from freezing, apply
de-icer through the key hole. If the lock be-
comes frozen, heat the key before inserting it
into the key hole, or use the INFINITI Intelli-
gent Key.
ANTIFREEZE
In the winter when it is anticipated that the
temperature will drop below 32°F (0°C),
check the antifreeze to assure proper winter
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 left outside without
anti-freeze, 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,
INFINITI recommends the use of MUD &
SNOW or ALL SEASON TIRES on all
four wheels. It is recommended that you
visit an INFINITI retailer for the tire type,
size, speed rating and availability infor-
mation.
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.
COLD WEATHER DRIVING
Starting and driving5-191

To start your engine with a booster battery,
the instructions and precautions below must
be followed.
WARNING
∙ If done incorrectly, jump starting can leadto a battery explosion, resulting in severe
injury or death. It could also damage your
vehicle.
∙ Explosive hydrogen gas is always present in the vicinity of the battery. Keep all
sparks and flames away from the
battery.
∙ Do not allow battery fluid to come into contact with eyes, skin, clothing or
painted surfaces. Battery fluid is a corro-
sive sulfuric acid solution which can cause
severe burns. If the fluid should come into
contact with anything, immediately flush
the contacted area with water.
∙ Keep battery out of the reach of children.
∙ The booster battery must be rated at 12 volts. Use of an improperly rated bat-
tery can damage your vehicle. ∙ Whenever working on or near a battery,
always wear suitable eye protectors (for
example, goggles or industrial safety
spectacles) and remove 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 seri-
ous injury.
∙ The automatic engine cooling fan (if so equipped) may come on at any time with-
out warning, even if the ignition switch is
in the OFF position and the engine is not
running. To avoid injury, keep hands and
other objects away from it.
JUMP STARTING
In case of emergency6-5

CAUTION
∙ Continuously Variable Transmission(CVT) models cannot be push-started or
tow-started. Attempting to do so may
cause transmission damage.
∙ Do not push start this vehicle. The three- way catalyst may be damaged.
WARNING
∙ Do not continue to drive if your vehicleoverheats. Doing so could cause engine
damage or a vehicle fire.
∙ To avoid the danger of being scalded, never remove the radiator or coolant res-
ervoir cap while the engine is still hot.
When the radiator or coolant reservoir
cap is removed, 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 engage the
P (Park) position.
Do not stop the engine.
2. Turn off the air conditioner. Open all the windows, move the heater or air condi-
tioner temperature control to maximum
hot and fan control to high speed. 3. Get out of the vehicle. Look and listen for
steam or coolant escaping from the ra-
diator 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.
4. Open the engine hood.
WARNING
If steam or water is coming from the engine,
stand clear to prevent getting burned.
5. 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 leak-
ing, the water pump belt is missing or
loose, 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.
PUSH STARTING IF YOUR VEHICLE OVERHEATS
In case of emergency6-7

8 Do-it-yourself
Maintenance precautions.........................8-2
Engine compartment check locations ..............8-3
Engine cooling system ........................... 8-4
Checking engine coolant level ..................8-5
Changing engine coolant ......................8-5
Engine oil ........................................8-6
Checking engine oil level .......................8-6
Changing engine oil ...........................8-7
Changing engine oil filter ..................... 8-8
Continuously Variable Transmission (CVT) fluid ....8-9
Brake fluid ..................................... 8-10
Windshield-washer fluid ........................ 8-10
Windshield-washer fluid reservoir ............8-10
Battery ......................................... 8-11
Jump starting ............................... 8-12
Variable voltage control system .................8-13
Drive belt ...................................... 8-13
Spark plugs .................................... 8-14
Replacing spark plugs ....................... 8-14
Air cleaner ..................................... 8-15In-cabin microfilter
.......................... 8-15
Windshield wiper blades ........................ 8-16
Cleaning .................................... 8-16
Replacing ................................... 8-16
Brakes ......................................... 8-18
Fuses .......................................... 8-19
Engine compartment ........................ 8-19
Passenger compartment .....................8-20
Battery replacement ............................ 8-21
INFINITI Intelligent Key ......................8-22
Lights ......................................... 8-23
Headlights .................................. 8-23
Fog lights (if so equipped) ...................8-23
Exterior and interior lights ...................8-24
Wheels and tires ............................... 8-26
Tire pressure ................................ 8-26
Tire labeling ................................. 8-30
Types of tires ............................... 8-32
Tire chains .................................. 8-35
Changing wheels

and tires................... 8-36