check engine INFINITI QX50 2023 Manual Online

equivalent with the proper mixture. (For ad-
ditional information on the proper mixture for
your area, see “Engine cooling system”
(P. 8-4).)
NOTE: Mixing any other type of coolant or
the use of non-distilled water may reduce
the recommended service interval of the
coolant.
Engine oil and oil filter:Replace engine oil
and oil filter at the specified intervals. For
recommended oil grade and viscosity, see
“Recommended fluids/lubricants and capaci-
ties” (P. 10-2).
Engine valve clearance*: Inspect only if valve
noise increases. Adjust valve clearance if
necessary.
Evaporative emissions control vapor lines*:Check vapor lines for leaks or looseness.
Tighten connections or replace parts as
necessary.
Fuel lines/connections*: Check the fuel
hoses, piping and connections for leaks,
looseness, or deterioration. Tighten connec-
tions or replace parts as necessary.
Spark plugs: Replace at specified intervals.
Install new plugs of the same type as origi-
nally equipped.
CHASSIS AND BODY
MAINTENANCE:
Brake lines and cables: Visually inspect for
proper installation. Check for chafing, cracks,
deterioration, and signs of leaking. Replace
any deteriorated or damaged parts
immediately.
Brake pads and rotors: Check for wear, de-
terioration and fluid leaks. Replace any dete-
riorated or damaged parts immediately.
Exhaust system: Visually inspect the exhaust
pipes, muffler and hangers for leaks, cracks,
deterioration, and damage. Tighten connec-
tions or replace parts as necessary.
In-cabin microfilter: Replace at specified in-
tervals. When driving for prolonged periods in
dusty conditions, replace the filter more
frequently.
Propeller shaft(s): Check for damage, loose-
ness, and grease leakage. (AWD)
Steering gear and linkage, axle and suspen-
sion parts, drive shaft boots: Check for dam-
age, looseness, and leakage of oil or grease.
Under severe driving conditions, inspect more
frequently. Tire rotation:
Rotate tires at the specified
interval shown in the maintenance schedule.
When rotating tires, check for damage and
uneven wear. Replace if necessary.
Transmission fluid/oil, differential oil and
transfer case oil: Visually inspect for signs of
leakage at specified intervals.
Replace at specified intervals.
9-6Maintenance and schedules

Incorrect ignition timing may result in spark
knock, after-run and/or overheating, which
may cause excessive fuel consumption or en-
gine damage. If any of the above symptoms
are encountered, have your vehicle checked.
It is recommended that you visit an INFINITI
retailer.
However, now and then you may notice light
spark knock for a short time while accelerat-
ing or driving up hills. This is not a cause for
concern, because you get the greatest fuel
benefit when there is light spark knock for a
short time under heavy engine load.
ENGINE OIL AND OIL FILTER
RECOMMENDATIONS
Selecting the correct oil
It is essential to choose the correct grade, qual-
ity and viscosity engine oil to ensure satisfac-
tory engine life and performance. For addi-
tional information, see "Recommended fluids/
lubricants and capacities" (P. 10-2). INFINITI
recommends the use of an energy conserving
oil in order to improve fuel economy.
Select only engine oils that meet the Ameri-
can Petroleum Institute (API) certification or
International Lubricant Standardization andApproval Committee (ILSAC) certification
and SAE viscosity standard. These oils have
the API certification mark on the front of the
container. Oils which do not have the speci-
fied quality label should not be used as they
could cause engine damage.
Oil additives
INFINITI does not recommend the use of oil
additives. The use of an oil additive is not
necessary when the proper oil type is used
and maintenance intervals are followed.
Oil which may contain foreign matter or has
been previously used should not be used.
LTI2587
10-6Technical and consumer information

• Have your vehicle serviced more often thanat intervals specified in the recommended
maintenance schedule in “Maintenance and
schedules” (P. 9-2).
• When making a turn, your trailer wheels will be closer to the inside of the turn than your
vehicle wheels. To compensate for this,
make a larger than normal turning radius
during the turn.
• Crosswinds and rough roads will adversely affect vehicle/trailer handling, possibly
causing vehicle sway. When being passed
by larger vehicles, be prepared for possible
changes in crosswinds that could affect
vehicle handling.
Do the following if the trailer begins to sway:
1. Take your foot off the accelerator pedal to allow the vehicle to coast and steer as
straight ahead as the road conditions al-
low. This combination will help stabilize
the vehicle
– Do not correct trailer sway by steering or applying the brakes.
2. When the trailer sway stops, gently apply the brakes and pull to the side of the road
in a safe area.
3. Try to rearrange the trailer load so it is balanced as described in this section. • Be careful when passing other vehicles.
Passing while towing a trailer requires con-
siderably more distance than normal pass-
ing. Remember, the length of the trailer
must also pass the other vehicle before you
can safely change lanes.
• Downshift the transmission to a lower gear for engine braking when driving down
steep or long hills. This will help slow the
vehicle without applying the brakes.
• Avoid holding the brake pedal down too long or too frequently. This could cause the
brakes to overheat, resulting in reduced
braking efficiency.
• Increase your following distance to allow for greater stopping distances while tow-
ing a trailer. Anticipate stops and brake
gradually.
• INFINITI recommends that the cruise con- trol not be used while towing a trailer.
• Some states or provinces have specific regulations and speed limits for vehicles
that are towing trailers. Obey the local
speed limits.
• Check your hitch, trailer wiring harness connections, and trailer wheel lug nuts af-
ter 50 miles (80 km) of travel and at every
break. • When launching a boat, don't allow the
water level to go over the exhaust tail pipe
or rear bumper.
• Make sure you disconnect the trailer lights before backing the trailer into the water or
the trailer lights may burn out.
When towing a trailer, final drive gear oil
should be replaced and transmission oil/
fluid should be changed more frequently. For
additional information, see“ Do-it-yourself”
(P. 8-2).
FLAT TOWING FOR ALL–WHEEL
DRIVE VEHICLE (if so equipped)
Towing your vehicle with all four wheels on
the ground is sometimes called flat towing.
This method is sometimes used when towing
a vehicle behind a recreational vehicle, such
as a motor home.
CAUTION
• Failure to follow these guidelines can re-
sult in severe transmission damage.
•
Never flat tow your All-wheel drive (AWD)
vehicle.
Technical and consumer information10-31

To notify INFINITI of any safety con-
cerns please contact our Consumer
Information Centre toll free at
1-800-361-4792.WARNING
A vehicle equipped with All-Wheel Drive
(AWD) should never be tested using a two
wheel dynamometer (such as the dyna-
mometers used by some states for emis-
sions testing), or similar equipment. Make
sure you inform the test facility personnel
that your vehicle is equipped with AWD
before it is placed on a dynamometer.
Using the wrong test equipment may result
in transmission damage or unexpected ve-
hicle movement which could result in seri-
ous vehicle damage or personal injury.
Due to legal requirements in some states and
Canadian Provinces, your vehicle may be re-
quired to be in what is called the “ready con-
dition” for an Inspection/Maintenance (I/M)
test of the emission control system.
The vehicle is set to the “ready condition”
when it is driven through certain driving pat-
terns. Usually, the ready condition can be
obtained by ordinary usage of the vehicle. If a powertrain system component is repaired
or the battery is disconnected, the vehicle
may be reset to a “not ready” condition. Be-
fore taking the I/M test, check the vehicle's
inspection/maintenance test readiness con-
dition. Place the ignition switch in the ON
position without starting the engine. If the
Malfunction Indicator Light (MIL) comes on
steady for 20 seconds and then blinks for
10 seconds , the I/M test condition is “not
ready”. If the MIL does not blink after 20
seconds, the I/M test condition is “ready”. It is
recommended that you visit an INFINITI re-
tailer to set the “ready condition” or to pre-
pare the vehicle for testing.
READINESS FOR INSPECTION/
MAINTENANCE (I/M) TEST
Technical and consumer information10-35

11 Index
A
Active Engine Brake...............5-145
Activenoisecancellation ...........5-154 Active sound enhancement ........5-154
ActiveRideControl...............5-146
ActiveTraceControl ..............5-144
Aiming control, headlights ...........2-45
Air bag (See supplemental restraint
system).........................1-41
Air bag system ....................1-49
Front (See supplemental front impact air
bagsystem)....................1-49
Air bag warning labels ..............1-61
Air bag warning light, supplemental .....1-62
Airbagwarninglight...............1-62
Air cleaner housing filter .............8-16
Air cleaner .......................8-16
Air conditioner ....................4-36
Air conditioner operation ..........4-36
Air conditioner specification label . . .10-13
Air conditioner system refrigerant and
oil recommendations .............10-7
Heater and air conditioner (automatic)
(if so equipped) .................4-35
Heater and air conditioner controls . . .4-36
Servicing air conditioner ...........4-43
Alarm system (See vehicle security
system).........................2-33
Anchor point locations ..............1-26
Antenna ........................4-43 Anti-lock brake warning ligh
t.........2-10
Anti-lock Braking System (ABS) ......5-140
Antifreeze ......................5-153
Armrests.........................1-5
Around View® Monitor .............4-11
Autolightswitch..................2-40
Automatic anti-glare inside mirror ......3-34
Automaticbrakehold...............5-26
Automatic door locks ................3-6
Automatic.......................2-74 Automatic power window switch ....2-74
B
Battery replacement...............8-22
INFINITI Intelligent Key ...........8-22
Keyfob.......................8-22
Battery........................5-153 Charge warning light .............2-11
Before starting the engine ...........5-16
Belt (See drive belt) ................8-15
Blind Spot Intervention® (BSI) ........5-54
Blind Spot Warning (BSW) ...........5-45
Boosterseats ....................1-38
Brake Assist .....................5-141
Brakefluid ......................8-10
Brakesystem ...................5-140
Brake.........................5-140 Anti-lock Braking System (ABS) ....5-140
Brakefluid ....................8-10 Brakelight(Seestoplight).........
8-25
Brake system .................5-140
Brakewarninglight..............2-10
Brake wear indicators ........2-18,8-19
Self-adjusting brakes .............8-19
Brakes .........................8-19
Break-in schedule ................5-132
Brightnesscontrol.................2-46 Instrument panel ................2-46
Bulb check/instrument panel .........2-10
Bulb replacement .................. 8-25
C
C.M.V.S.S. certification label .........10-12
Camera Aiding Sonar (parking sensor) . . .4-24
Capacities and recommended
fuel/lubricants....................10-2
Car phone or CB radio ..............4-44
Cargo (See vehicle loading
information).....................10-17
Cargoareastoragebin.............. 2-65
Cargocover...................... 2-71
Cargolight ......................2-79
Chassis control ..................5-144
Check tire pressure ................ 2-28
Child restraint with top tether strap .....1-26
Child restraints ...................1-20
LATCH (Lower Anchors and Tethers
forCHildren)System.............1-24

Precautions on child
restraints.........1-22,1-29,1-34,1-38
Top tether strap anchor point
locations.......................1-26
Child safety rear door lock .............3-6
Cleaning exterior and interior ...........7-2
Climate control seat switch ...........2-48
Cold weather driving ...............5-153
Console box ......................2-62
Console light ......................2-78
Continuously Variable Transmission
(CVT) ...........................5-18
Continuously Variable Transmission (CVT)
fluid..........................8-10
Driving with Continuously Variable
Transmission (CVT) ...............5-18
Controls.........................4-36 Heater and air conditioner controls . . .4-36
Coolant .........................10-2
Capacities and recommended
fuel/lubricants ..................10-2
Changing engine coolant ............8-5
Checking engine coolant level ........8-5
Engine coolant temperature gauge .....2-6
Corrosion protection .................7-7
Cupholders ......................2-63
D
Dimensions and weights ............10-10
Dimmer switch for instrument panel .....2-46
Door locks ........................3-4
Drive belt ........................8-15 Driving the vehicle
..................5-18
Driving.........................5-153 Cold weather driving .............5-153
Driving with Continuously Variable
Transmission (CVT) ...............5-18
Precautions when starting and
driving .....................5-4,5-10
Dual power moonroof ...............2-75
E
E-call (SOS) Button.................2-54
Eco Drive Report ...................5-31
Economy - fuel ...................5-133
Electronic parking brake .............5-24
Emergency engine shutoff ............5-15
Emission control information label .....10-12
Emission control system warranty .....10-33
Engine coolant temperature gauge .......2-6
Engine ..........................5-16
Before starting the engine ..........5-16
Capacities and recommended
fuel/lubricants ..................10-2
Changing engine coolant ............8-5
Changing engine oil filter ............8-7
Changing engine oil ................8-7
Checking engine coolant level ........8-5
Checking engine oil level ............8-6
Engine compartment check locations . . .8-3
Engine coolant temperature gauge .....2-6
Engine cooling system ..............8-4
Engine oil and oil filter
recommendation .................10-6 Engine oil pressure warning light
.....2-12
Engine oil viscosity ...............10-7
Engine oil .......................8-6
Engine serial number .............10-12
Engine specifications ..............10-9
Starting the engine ...............5-16
Event Data recorders ..............10-36
Exhaust gas (Carbon monoxide) .........5-4
Explanation of maintenance items .......9-2
Explanation of scheduled maintenance
items............................9-5
Extended storage switch .............2-60
F
F.M.V.S.S. certification label ..........10-12
Flashers (See hazard warning flasher
switch) ...........................6-2
Flat tire ..........................6-3
Floor mat positioning aid ..............7-6
Fluid ...........................8-10 Brakefluid.....................8-10
Capacities and recommended
fuel/lubricants .................. 10-2
Continuously Variable Transmission
(CVT) fluid .....................8-10
Engine coolant ...................8-4
Engine oil .......................8-6
Windshield-washerfluid ...........8-11
Foglightswitch ...................2-47
ForwardDrivingAids................ 2-31
System Temporarily Unavailable ......2-31
11-2

J
Jump starting......................6-5
K
Key fob battery replacement ..........8-22
Key .............................3-2
Keylessentry .....................3-13 With Intelligent Key system
(See Intelligent Key system) .........3-13
L
Label..........................10-13
Tire and Loading Information label . . .10-13
Labels .........................10-13
Air conditioner specification label ....10-13
C.M.V.S.S. certification label .......10-12
Emission control information label . . .10-12
Engine serial number .............10-12
F.M.V.S.S. certification label ........10-12
Tire and Loading Information label . . .10-13
Vehicle identification number (VIN)
plate.........................10-11
Vehicle identification number (VIN) . . .10-11
Warning labels (for SRS) ...........1-61
Lane Departure Prevention (LDP) ......5-40
Lane Departure Warning (LDW) ........5-35
LATCH (Lower Anchors and Tethers for
CHildren)System ..................1-24 LED Daytime Running Lights (DRL)
system..........................2-45
License plate
....................10-14
Installing the license plate .........10-14
Liftgaterelease....................3-27
Liftgate.........................3-22
Light ...........................1-62 Airbagwarninglight .........1-62,2-13
Brakelight(Seestoplight)..........8-25
Bulb check/instrument panel ........2-10
Bulb replacement ................8-25
Charge warning light ..............2-11
Console light ....................2-78
ExteriorandInteriorlights..........8-25
Foglightswitch .................2-47
Foglights......................8-24
Headlight and turn signal switch .....2-40
Headlights.....................8-24
Interiorlight....................2-78
Lightbulbs.....................8-24
Low tire pressure warning light ......2-14
Low windshield-washer fluid warning
light..........................2-26
Personal lights ..................2-79
Security indicator light .............2-13
Warning/indicator lights and audible
reminders ..................2-9,2-10
Lights ..........................8-24 Maplights .....................2-79
Lock ............................3-6
Child safety rear door lock ...........3-6
Door locks ......................3-4
Gloveboxlock ..................2-62 Liftgaterelease..................3-27
Power door locks
.................3-5
Loose fuel cap warning ..............2-26
Lowfuelwarninglight...............2-12
Low tire pressure warning light ........2-14
Low windshield-washer fluid warning
light............................ 2-26
Luggage (See vehicle loading
information)..................... 10-17
Luggage hook ..................... 2-65
Luggage rack (see roof rack) ..........2-66
M
Maintenance requirements............9-2
Maintenance schedules ...............9-7
Maintenance ......................9-2
General maintenance ...............9-2
Inside the vehicle ..................9-3
Maintenance precautions ...........8-2
Outside the vehicle ................9-2
Seat belt maintenance .............1-19
Under the hood and vehicle ..........9-4
Malfunction indicator light ............2-15
Maplights ....................... 2-79
Memoryseat .....................3-37
Meters and gauges ..................2-4
Instrument brightness control .......2-46
Mirror ..........................3-34
Automatic anti-glare inside mirror ....3-34
Heated mirrors .................. 3-36
Outside mirrors ..................3-35
Vanity mirror ...................3-33
11-4

Mirrors..........................3-34
Moonroof ........................2-75
Moving Object Detection (MOD) .......4-29
O
Octane rating (See fuel octane rating) . . .10-5
Odometer.........................2-5
Oil.............................10-2 Capacities and recommended
fuel/lubricants ..................10-2
Changing engine oil filter ............8-7
Changing engine oil ................8-7
Checking engine oil level ............8-6
Engine oil and oil filter
recommendation .................10-6
Engine oil viscosity ...............10-7
Engine oil .......................8-6
Outside mirrors ....................3-35
Overhead sunglasses holder ..........2-63
Overheat .........................6-7
If your vehicle overheats ............6-7
Owner's manual order form ..........10-37
Owner's manual/service manual order
information......................10-37
P
Parking brake .....................2-11
Parking .........................5-136
Parking/parking on hills ...........5-136
Personal lights ....................2-79
Power outlet .....................2-59 Power steering
...................5-137
Power ...........................3-5
Power door locks .................3-5
Power outlet ...................2-59
Power rear windows ..............2-74
Power steering system ......5-137, 5-138
Power windows .................2-72
Rear power windows .............2-74
Precautions .......................8-2 Maintenance precautions ...........8-2
On-pavement and off-road driving
precautions .....................5-8
Precautions on booster
seats............1-22,1-29,1-34,1-38
Precautions on child
restraints .........1-22,1-29,1-34,1-38
Precautionsonseatbeltusage.......1-12
Precautions on supplemental restraint
system ........................1-41
Precautions when starting and
driving .....................5-4,5-10
Predictive Forward Collision Warning
(PFCW)........................5-120
ProPILOT Assist ...................5-73
Push starting ......................6-7
R
Radio...........................4-44
Car phone or CB radio ............4-44
Rainsensor.......................2-37
Readiness for inspection maintenance
(I/M)test.......................10-35 Rear Automatic Braking (RAB)
.........2-17
Rear bench seat adjustment ............1-5
Rear Cross Traffic Alert (RCTA) ........5-66
Rear Door Alert ...................2-25
Rear power sunshade ...............2-75
Rear power windows ...............2-74
Rear window defroster, outside mirror
defroster,andwiperdeicerswitch......2-39
Rear window wiper and washer
switches.........................2-38
RearView Monitor ..................4-3
Recommended Fluids ...............10-2
Recorders.......................10-36 EventData....................10-36
Refrigerant recommendation ..........10-7
Registering a vehicle in another
country.........................10-11
Remote Engine Start ................3-18
Reporting safety defects (US only) .....10-34
Roadside assistance program ...........6-2
Roof rack ........................2-66
S
Safety ...........................3-6
Child safety rear door lock ...........3-6
Childseatbelts ....1-22,1 -29, 1-34, 1-38
Reporting safety defects (US only) . . .10-34
Seat adjustment ....................1-3
Front power seat adjustment .........1-3
Rear bench seats ..................1-5
Seat belt extenders .................1-19
Seat belt warning light ...............1-15
11-5