2023 INFINITI QX55 ECU

Doors and engine hood:Check that the doors
and engine hood operate properly. Also en-
sure that all latches lock securely. Lubricate
hinges, latches, latch pins, rollers and links if
necessary. Make sure that the secondary
latch keeps the hood from opening when the
primary latch is released.
When driving in areas using road salt or other
corrosive materials, check lubrication
frequently.
Check that the gas stays or struts properly
and securely hold the hood, trunk, or rear
hatch fully open. If the hood, trunk, or rear
hatch is not held open, have the gas stays or
struts replaced.
Lights*: Clean the headlights on a regular
basis. Make sure that the headlights, stop
lights, tail lights, turn signal lights, and other
lights are all operating properly and installed
securely. Also check headlight aim.
Road wheel nuts (lug nuts)*: When checking
the tires, make sure no wheel nuts are miss-
ing, and check for any loose wheel nuts.
Tighten if necessary.
Tire rotation*: Rotate tires at the specified
interval shown in the maintenance schedule.
Tires*: Check the pressure with a gauge of-
ten and always prior to long distance trips. If necessary, adjust the pressure in all tires, in-
cluding the spare, to the pressure specified.
Check carefully for damage, cuts or excessive
wear.
Tire Pressure Monitoring System (TPMS)
tire pressure sensor:
It is recommended that
you replace the TPMS tire pressure sensor
assembly when the tires are replaced due to
wear or age.
Wheel alignment and balance: If the vehicle
should pull to either side while driving on a
straight and level road, or if you detect un-
even or abnormal tire wear, there may be a
need for wheel alignment.
If the steering wheel or seat vibrates at nor-
mal highway speeds, wheel balancing may be
needed.
For additional information regarding tires, re-
fer to “Important Tire Safety Information”
(US) or “Tire Safety Information” (Canada) in
the INFINITI Warranty Information Booklet.
Windshield:
Clean the windshield on a regular
basis. Check the windshield at least every six
months for cracks or other damage. Have a
damaged windshield repaired by a qualified
repair facility. It is recommended that you have
a damaged windshield repaired by an INFINITI
retailer, or an INFINITI Certified Collision Cen- ter. To locate a collision center in your area,
refer to http://collision.infinitiusa.com.
Inside the vehicle
The maintenance items listed here should be
checked on a regular basis, such as when
performing scheduled maintenance, cleaning
the vehicle, etc.
Accelerator pedal:
Check the pedal for
smooth operation and make sure the pedal
does not catch or require uneven effort. Keep
the floor mat away from the pedal.
Brake pedal: Check the pedal for smooth op-
eration. If the brake pedal suddenly goes
down further than normal, the pedal feels
spongy or the vehicle seems to take longer to
stop, have your vehicle checked immediately.
It is recommended that you visit an INFINITI
retailer for this service. Keep the floor mat
away from the pedal.
Brakes: Check that the brakes do not pull the
vehicle to one side when applied.
Continuously Variable Transmission (CVT) P
(Park) position mechanism: On a fairly steep
hill check that the vehicle is held securely with
the shift position in the P (Park) position
without applying any brakes.
Maintenance and schedules9-3

Parking brake:Check the parking brake op-
eration regularly. The vehicle should be se-
curely held on a fairly steep hill with only the
parking brake applied. If the parking brake
does not securely hold the vehicle, it is recom-
mended that you visit an INFINITI retailer for
service.
Seat belts: Check that all parts of the seat
belt system (for example, buckles, anchors,
adjusters and retractors) operate properly
and smoothly, and are installed securely.
Check the belt webbing for cuts, fraying,
wear or damage.
Seats: Check seat position controls such as
seat adjusters, seatback recliner, etc., to en-
sure they operate smoothly and all latches
lock securely in every position. Check that the
head restraints/headrests move up and
down smoothly and the locks (if so equipped)
hold securely in all latched positions.
Steering wheel: Check for changes in the
steering system, such as excessive free play,
hard steering or strange noises.
Warning lights and chimes: Make sure all
warning lights and chimes are operating
properly.
Windshield defroster: Check that the air
comes out of the defroster outlets properly and in sufficient quantity when operating the
heater or air conditioner.
Windshield wiper and washer*:
Check that
the wipers and washer operate properly and
that the wipers do not streak.
Under the hood and vehicle
The maintenance items listed here should be
checked periodically (for example, each time
you check the engine oil or refuel).
Battery (for maintenance free batteries)*:
This vehicle is equipped with a sealed main-
tenance free battery. It is recommended that
you visit an INFINITI retailer for this service.
NOTE:
Care should be taken to avoid situations
that can lead to potential battery discharge
and potential no-start conditions such as:
1. Installation or extended use of electronic accessories that consume battery power
when the engine is not running (Phone
chargers, GPS, DVD players, etc.).
2. Vehicle is not driven regularly and/or only driven short distances.
In these cases, the battery may need to be
charged to maintain battery health. Brake fluid level*:
Make sure that the brake
fluid level is between the MAX and MIN lines
on the reservoir.
Engine coolant level*: Check the coolant level
when the engine is cold.
Engine drive belt*: Make sure the drive belt is
not frayed, worn, cracked or oily.
Engine oil level*: Check the level after parking
the vehicle on a level spot and turning off the
engine. Wait more than 15 minutes for the oil
to drain back into the oil pan.
Exhaust system: Make sure there are no
loose supports, cracks or holes. If the sound
of the exhaust seems unusual or there is a
smell of exhaust fumes, immediately have the
exhaust system inspected. It is recommended
that you visit an INFINITI retailer for this
service. For additional information, see “Ex-
haust gas (carbon monoxide)” (P. 5-4).
Fluid leaks: Check under the vehicle for fuel,
oil, water or other fluid leaks after the vehicle
has been parked for a while. Water dripping
from the air conditioner after use is normal. If
you should notice any leaks or if fuel fumes
are evident, check for the cause and have it
corrected immediately.
9-4Maintenance and schedules

10 Technical and consumer information
Recommended fluids/lubricants and capacities . . 10-2Fuel recommendation ....................... 10-3
Engine oil and oil filter recommendations .....10-6
Air conditioner system refrigerant and oil
recommendations ........................... 10-7
Specifications .................................. 10-8
Engine ...................................... 10-8
Wheels and tires ............................ 10-9
Dimensions and weights ....................10-9
When traveling or registering in another
country ....................................... 10-10
Vehicle identification .......................... 10-10
Vehicle Identification Number (VIN) plate . . . 10-10
Vehicle identification number
(chassis number) ........................... 10-10
Engine serial number ....................... 10-11
F.M.V.S.S./C.M.V.S.S. certification label .....10-11
Emission control information label ..........10-11
Tire and Loading Information label ..........10-12
Air conditioner specification label ...........10-12 Installing front license plate
....................10-13
Vehicle loading information ....................10-15
Terms ..................................... 10-15
Vehicle load capacity ....................... 10-16
Securing the load .......................... 10-18
Loading tips ............................... 10-18
Measurement of weights ...................10-19
Towing a trailer ............................... 10-19
Flat towing for all–wheel drive vehicle ......10-20
Uniform tire quality grading ...................10-21
Emission control system warranty .............10-22
Reporting safety defects ......................10-22
Readiness for Inspection/Maintenance (I/M)
test .......................................... 10-24
Event Data Recorders (EDR) ..................10-24
Additional Data Recording (on vehicles
equipped with optional ProPILOT Assist) . . . 10-25
Owner's Manual/Service Manual order
information ................................... 10-26

SECURING THE LOAD
There are luggage hooks located in the cargo
area as shown. The hooks can be used to
secure cargo with ropes or other types of
straps.
When securing items using luggage hooks
located on the side finisher do not apply a
load over more than 6.5 lbs. (29 N) to a single
hook.
The luggage hooks that are located on the
floor should have loads less than 110 lbs.
(490 N) to a single hook.
WARNING
• Properly secure all cargo with ropes or
straps to help prevent it from sliding or
shifting. Do not place cargo higher than
the seatbacks. In a sudden stop or colli-
sion, unsecured cargo could cause per-
sonal injury.
• The child restraint top tether strap may
be damaged by contact with items in the
cargo area. Secure any items in the cargo
area. Your child could be seriously injured
or killed in a collision if the top tether
strap is damaged.
• Do not load your vehicle any heavier than
the GVWR or the maximum front and
rear GAWRs. If you do, parts of your ve-
hicle can break, tire damage could occur,
or it can change the way your vehicle
handles. This could result in loss of con-
trol and cause personal injury.
LOADING TIPS
• The GVW must not exceed GVWR
or GAWR as specified on the
F.M.V.S.S./C.M.V.S.S. certification
label. • Do not load the front and rear axle
to the GAWR. Doing so will exceed
the GVWR.
WARNING
• Properly secure all cargo with
ropes or straps to help prevent it
from sliding or shifting. Do not
place cargo higher than the seat-
backs. In a sudden stop or colli-
sion, unsecured cargo could cause
personal injury.
• Do not load your vehicle any
heavier than the GVWR or the
maximum front and rear GAWRs.
If you do, parts of your vehicle can
break, tire damage could occur, or
it can change the way your vehicle
handles. This could result in loss of
control and cause personal injury.
LTI2556
Cargo area luggage hooks
10-18Technical and consumer information

•Overloading not only can shorten
the life of your vehicle and the tire,
but can also cause unsafe vehicle
handling and longer braking dis-
tances. This may cause a prema-
ture tire failure which could result
in a serious accident and personal
injury. Failures caused by over-
loading are not covered by the ve-
hicle’s warranty.MEASUREMENT OF WEIGHTS
Secure loose items to prevent weight
shifts that could affect the balance of
your vehicle. When the vehicle is
loaded, drive to a scale and weigh the
front and the rear wheels separately
to determine axle loads. Individual axle
loads should not exceed either of the
Gross Axle Weight Ratings (GAWR).
The total of the axle loads should not
exceed the Gross Vehicle Weight Rat-
ing (GVWR). These ratings are given
on the vehicle certification label. If
weight ratings are exceeded, move or
remove items to bring all weights be-
low the ratings.
Do not tow a trailer with your vehicle.
TOWING A TRAILER
Technical and consumer information10-19

You may notify INFINITI by contacting
our Consumer Affairs Department,
toll-free, at 1-800-662-6200.
For Canada
If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you should
immediately inform Transport Canada
in addition to notifying INFINITI.
If Transport Canada receives com-
plaints, it may open an investigation,
and if it finds that a safety defect ex-
ists in a group of vehicles, it may re-
quest that INFINITI conduct a recall
campaign. However, Transport
Canada cannot become involved in in-
dividual problems between you, your
retailer, or INFINITI.You may contact Transport Canada's
Defect Investigations and Recalls Divi-
sion toll free at 1-800-333-0510. You
may also report safety defects online at:
http://www.tc.gc.ca/eng/
motorvehiclesafety/menu.htm (English
speakers) or http://www.tc.gc.ca/fra/
securiteautomobile/menu.htm (French
speakers)
Or contact Transport Canada by mail
at:
Transport Canada Motor Vehicle
Safety Investigations Laboratory
80 Noel Street Gatineau, QC J8Z0A1
Additional information concerning
motor vehicle safety may be obtained
from Transport Canada's Road Safety
Information Centre at 1-800-333-
0371 or online at www.tc.gc.ca/
roadsafety (English speakers) or
www.tc.gc.ca/securiteroutiere
(French speakers).To notify INFINITI of any safety con-
cerns please contact our Consumer In-
formation Centre toll free at
1-800-361-4792.
Technical and consumer information10-23

11 Index
A
Active Engine Brake............5-145Active noise cancellation
Active sound enhancement......5-155Active Ride Control........... .5-146Active Trace Control............5-144Aiming control, headlights.........2-45Air bag (See supplemental restraint
system).................... .1-41Air bag system
Front (See supplemental front impact air
bag system)
............... .1-49Air bag warning labels............1-61Air bag warning light.........1-62, 2-12Air bag warning light,
supplemental............ .1-62, 2-12Air cleaner.................. .8-16Air cleaner housing filter..........8-16Air conditioner
Air conditioner operation........4-34Air conditioner specification label. .10-12Air conditioner system refrigerant and oil
recommendations............ .10-7Heater and air conditioner (automatic)
(if so equipped)............. .4-33Heater and air conditioner controls. .4-34Servicing air conditioner.........4-41Alarm system (See vehicle security
system).................... .2-33Anchor point locations............1-26
Antenna................... .4-41Anti-lock brake warning light. . . .2-10, 2-13Anti-lock Braking System (ABS).....5-140Antifreeze..................5-153Armrests.................... .1-5Around View® Monitor...........4-11Autolight switch.............. .2-41Automatic
Automatic power window switch. . .2-67Automatic anti-glare inside mirror.....3-34Automatic brake hold........... .5-26Automatic door locks............ .3-6
B
Battery............... .5-153, 8-12Charge warning light...........2-10Battery replacement............ .8-22INFINITI Intelligent Key.........8-22Key fob.................. .8-22Before starting the engine.........5-16Belt (See drive belt).............8-15Blind Spot Intervention® (BSI).......5-53Blind Spot Warning (BSW).........5-45Booster seats................ .1-38Brake
Anti-lock Braking System (ABS). . .5-140Brake fluid................ .8-10Brake light (See stop light)........8-25Brake system...............5-139
Brake warning light............2-10Brake wear indicators......2-18, 8-19Self-adjusting brakes...........8-19Brake Assist................ .5-141Brake fluid.................. .8-10Brake system................5-139Brakes.................... .8-19Break-in schedule..............5-131Brightness control
Instrument panel............ .2-46Bulb check/instrument panel........2-10Bulb replacement............. .8-25
C
C.M.V.S.S. certification label.......10-11Camera Aiding Sonar (parking sensor). .4-24Capacities and recommended
fuel/lubricants............... .10-2Car phone or CB radio...........4-42Cargo (See vehicle loading
information)................ .10-15Cargo area storage bin...........2-62Cargo cover................. .2-64Cargo light..................2-70Chassis control...............5-144Check tire pressure.............2-28Child restraint with top tether strap. . . .1-25Child restraints. . . .1-19, 1-20, 1-21, 1-23

Warning signals..............3-16Interior light................. .2-69ISOFIX child restraints............1-23
J
Jump starting............. .6-5, 8-14
K
Key....................... .3-2Key fob battery replacement........8-22Keyless entry
With Intelligent Key system
(See Intelligent Key system)
.......3-14
L
LabelTire and Loading Information label. .10-12LabelsAir conditioner specification label. . .10-12C.M.V.S.S. certification label......10-11Emission control information label. . .10-11Engine serial number.......... .10-11F.M.V.S.S. certification label......10-11Tire and Loading Information label. .10-12Vehicle identification number (VIN). .10-10Vehicle identification number (VIN)
plate................... .10-10Warning labels (for SRS).........1-61Lane Departure Prevention (LDP).....5-39
Lane Departure Warning (LDW)......5-34LATCH (Lower Anchors and Tethers for
CHildren) System...............1-23LED Daytime Running Lights (DRL)
system.................... .2-45License plate
Installing the license plate........10-13Liftgate.................... .3-22Liftgate release................3-27Light
Air bag warning light........1-62, 2-12Brake light (See stop light)........8-25Bulb check/instrument panel......2-10Bulb replacement............ .8-25Charge warning light...........2-10Exterior and Interior lights........8-25Fog light switch............. .2-47Fog lights................. .8-24Headlight and turn signal switch. . . .2-40Headlights.................8-24Interior light.................2-69Light bulbs.................8-24Low tire pressure warning light.....2-13Low windshield-washer fluid warning
light..................... .2-27Personal lights...............2-70Security indicator light...........2-12Warning/indicator lights and audible
reminders.............. .2-9, 2-10Lights..................... .8-24Map lights..................2-70Lock
Child safety rear door lock.........3-6Door locks................. .3-4
Glove box lock...............2-59Liftgate release...............3-27Power door locks..............3-5Loose fuel cap warning...........2-26Low fuel warning light. . . .2-11, 2-16, 2-27Low tire pressure warning light.......2-13Low windshield-washer fluid warning
light...................... .2-27Luggage (See vehicle loading
information).................10-15Luggage hook.................2-63
M
Maintenance
General maintenance........... .9-2Inside the vehicle.............. .9-3Maintenance precautions.........8-2Outside the vehicle.............9-2Seat belt maintenance...........1-18Under the hood and vehicle........9-4Maintenance requirements..........9-2Maintenance schedules.........9-7, 9-8Malfunction indicator light..........2-15Map lights.................. .2-70Memory seat..............3-37, 3-39Meters and gauges.............. .2-4Instrument brightness control......2-46Mirror
Automatic anti-glare inside mirror. . .3-34Heated mirrors.............. .3-36Outside mirrors...............3-35Vanity mirror............... .3-34
11-4