service interval INFINITI QX55 2023 Owners Manual

When the “Tire Pressure Low — Add Air” or
“Flat Tire — Visit dealer” warning appears, the
display can be switched to the tire pressure
mode by pushing the
orswitch to
reveal additional details on the displayed
warning.
For additional information, see “Low tire
pressure warning light” (P. 2-13), “Tire Pres-
sure Monitoring System (TPMS)” (P. 5-5),
“Flat tire” (P. 6-3) and “Types of tires”
(P. 8-35)
8. Chassis Control
The chassis control mode displays the status
of the Active Trace Control, Active Engine
Brake, and Active Ride Control.
For additional information, see “Chassis Con-
trol” (P. 5-144).
9. Oil control system
Engine oil information informs the distance
to oil change. Never exceed one year or 7500
miles (12000 km) between oil change
intervals.
Display when
ignition is ON Display timing Action Required
Engine Oil Ser-
vice due in xxx
miles Remaining oil
life is less than
940 miles
(1500 km). Plan to have
your vehicle
serviced.
Engine Oil Ser-
vice due Remaining oil
life is 0 miles (0
km). Have your ve-
hicle serviced
within two
weeks or less
than 500 miles
(800 km).
The oil change interval cannot be adjusted
manually.
The distance to oil change interval is calcu-
lated depending on the driving conditions and
set automatically by the oil control system.
CAUTION
If the oil replacement indicator is displayed,
change the engine oil within two weeks or
less than 500 miles (800 km).
Operating the vehicle with deteriorated oil
can damage the engine. To reset oil control system:
1. Place the ignition switch in the “ON”
position.
2. Push the trip computer switches
andlocated on the right side of the steer-
ing wheel to change the display.
3. Select the Engine Oil Service due in xxx miles display.
4. Push and hold the
orswitch for
longer than 1 second. Hold until the re-
maining distance changes to – – – miles
(km).
10. Variable Compression Turbo
Your engine is equipped with a variable com-
pression ratio system called “Variable Com-
pression Turbo”. This system can vary the
engine compression ratio continuously.
According to driving conditions, the system
applies optimum compression ratio auto-
matically to achieve both high output and
high fuel economy efficiency.
This is not a physical gauge. It is a display
option in the vehicle information display that
can be selected. For additional information,
see “Vehicle information display” (P. 2-19).
Instruments and controls2-23

OIL CONTROL SYSTEM
Engine oil information informs the distance
to oil change. Never exceed one year or 7500
miles (12000 km) between oil change
intervals.
Display when
ignition is ONDisplay timing Action Required
Engine Oil Ser-
vice due in xxx
miles Remaining oil
life is less than
940 miles
(1500 km). Plan to have
your vehicle
serviced.
Engine Oil Ser-
vice due Remaining oil
life is 0 miles (0
km). Have your ve-
hicle serviced
within two
weeks or less
than 500 miles
(800 km).
The oil change interval cannot be adjusted
manually.
The distance to oil change interval is calcu-
lated depending on the driving conditions and
set automatically by the oil control system.
CAUTION
If the oil replacement indicator is displayed,
change the engine oil within two weeks or
less than 500 miles (800 km).
Operating the vehicle with deteriorated oil
can damage the engine.
To reset oil control system:
1. Place the ignition switch in the “ON” position.
2. Push the trip computer switches
andlocated on the right side of the steer-
ing wheel to change the display.
3. Select the Engine Oil Service due in xxx miles display.
4. Push and hold the
orswitch for
longer than 1 second. Hold until the re-
maining distance changes to – – – miles
(km).
VEHICLE INFORMATION
DISPLAY WARNINGS AND
INDICATORS
The following messages may appear in your
vehicle information display.
Engine start operation for
Intelligent Key system (if
I-Key battery level is low)
This indicator appears when the battery of
the Intelligent Key is low and when the Intel-
ligent Key system and the vehicle are not
communicating normally.
If this appears, touch the ignition switch with
the Intelligent Key while depressing the brake
pedal. For additional information, see
“INFINITI Intelligent Key battery discharge”
(P. 5-15).
Key Battery Low
This indicator appears when the Intelligent
Key battery is running out of power.
If this indicator appears, replace the battery
with a new one. For additional information,
see “Battery replacement” (P. 8-22).
Key ID Incorrect
This warning appears when the ignition
switch is placed in the OFF position and the
Intelligent Key is not recognized by the sys-
tem. You cannot start the engine with an
unregistered key.
For additional information, see “INFINITI In-
telligent Key System” (P. 3-2).
Instruments and controls2-25

IN-CABIN MICROFILTER
The in-cabin microfilter restricts the entry of
airborne dust and pollen particles and re-
duces some objectionable outside odors. The
filter is located behind the glove box. For
additional information on change intervals,
see the "Maintenance and schedules" section
of this manual.
If replacement is required, it is recommended
that you visit an INFINITI retailer for this
service.
CLEANING
If your windshield is not clear after using the
windshield-washer or if a wiper blade chat-
ters when running, wax or other material may
be on the blade or windshield.
Clean the outside of the windshield with a
washer solution or a mild detergent. Your
windshield is clean if beads do not form when
rinsing with clear water.
Clean each blade by wiping it with a cloth
soaked in a washer solution or a mild deter-
gent. Then rinse the blades with clear water.
If your windshield is still not clear after clean-
ing the blades and using the wiper, replace
the blades.
CAUTION
Worn windshield wiper blades can damage
the windshield and impair driver vision.
REPLACING
Replace the wiper blades if they are worn.
To replace the windshield wiper blades, fol-
low the procedure below:
1. When the ignition switch is ON or within 60 seconds after placing the ignition
switch from the ON to OFF position,
place the windshield wiper and washer
lever into the OFF position.
2. Rapidly lift the windshield wiper and washer lever
OAupwards twice within 0.5
seconds. This action will cause the wipers
to automatically take the service position.
LDI3250
WINDSHIELD WIPER BLADES
Do-it-yourself8-17

Rear window wiper blade
If checking or replacement is required, it is
recommended that you visit an INFINITI re-
tailer for this service.If the brakes do not operate properly, it is
recommended that you have the brakes
checked. It is recommended that you visit an
INFINITI retailer for this service.
Self-adjusting brakes
Your vehicle is equipped with self-adjusting
brakes.
The front and rear disc-type brakes self-
adjust every time the brake pedal is applied.
WARNING
Have your brake system checked if the
brake pedal height does not return to nor-
mal. It is recommended that you visit an
INFINITI retailer for this service.
Brake pad wear indicators
The disc brake pads on your vehicle have
audible wear indicators. When a brake pad
requires replacement, a high pitched scraping
or screeching sound will be heard when the
vehicle is in motion. The noise will be heard
whether or not the brake pedal is depressed.
Have the brakes checked as soon as possible
if the wear indicator sound is heard. Under some driving or climate conditions, oc-
casional brake squeak, squeal or other noise
may be heard. Occasional brake noise during
light to moderate stops is normal and does
not affect the function or performance of the
brake system.
Proper brake inspection intervals should be
followed.
For additional information regard-
ing brake inspections, refer to the appropri-
ate maintenance schedule information in the
"Maintenance and schedules" section of this
manual.
BRAKES
Do-it-yourself8-19

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

Radiator and hoses:Check the front of the
radiator and clean off any dirt, insects, leaves,
etc., that may have accumulated. Make sure
the hoses have no cracks, deformation, rot or
loose connections.
Underbody: The underbody is frequently ex-
posed to corrosive substances such as those
used on icy roads or to control dust. It is very
important to remove these substances, oth-
erwise rust may form on the floor pan, frame,
fuel lines and around the exhaust system. At
the end of winter, the underbody should be
thoroughly flushed with plain water, being
careful to clean those areas where mud and
dirt may accumulate. For additional informa-
tion, see “Cleaning exterior” (P. 7-2).
Windshield-washer fluid*: Check that there
is adequate fluid in the reservoir. The following descriptions are provided to
give you a better understanding of the sched-
uled maintenance items that should be regu-
larly checked or replaced. The maintenance
schedule indicates at which mileage/time in-
tervals each item requires service.
In addition to scheduled maintenance, your
vehicle requires that some items be checked
during normal day-to-day operation. For ad-
ditional information, see “General mainte-
nance” (P. 9-2).
Items marked with
“*”are recommended by
INFINITI for reliable vehicle operation. You
are not required to perform maintenance on
these items in order to maintain the warran-
ties which come with your INFINITI. Other
maintenance items and intervals are required.
When applicable, additional information can
be found in the “Do-it-yourself” section of
this manual.NOTE:
INFINITI does not advocate the use of non-
OEM approved aftermarket flushing sys-
tems and strongly advises against perform-
ing these services on an INFINITI product.
Many of the aftermarket flushing systems
use non-OEM approved chemicals or sol-
vents, the use of which has not been vali-
dated by INFINITI.
For recommended fuel, lubricants, fluids,
grease, and refrigerant, see “Recommended
fluids/lubricants and capacities” (P. 10-2).
EMISSION CONTROL SYSTEM
MAINTENANCE:
Drive belt*: Check engine drive belt for wear,
fraying or cracking and for proper tension.
Replace any damaged drive belt.
Engine air filter: Replace at specified inter-
vals. When driving for prolonged periods in
dusty conditions, check/replace the filter
more frequently.
EXPLANATION OF SCHEDULED
MAINTENANCE ITEMS
Maintenance and schedules9-5

Engine coolant*:First replacement interval is
105,000 miles (168,000 km). After first re-
placement, replace every 75,000 miles
(120,000 km) or 60 months. When adding or
replacing coolant, be sure to use only Genuine
NISSAN Long Life Antifreeze/Coolant (blue)
or equivalent with the proper mixture. For
additional 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 filter: Periodic maintenance is not re-
quired. (in-tank type filter) Fuel lines*:
Check the fuel hoses, piping and
connections for leaks, looseness, or deterio-
ration. Tighten connections or replace parts
as necessary.
Spark plugs: Replace every 105,000 miles
(168,000 km). Replace the spark plug when
the plug gap exceeds 0.045 in (1.25 mm)
even if within specified replacement mileage.
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

To help ensure smooth, safe and economical
driving, INFINITI provides two maintenance
schedules that may be used, depending upon
the conditions in which you usually drive.
These schedules contain both distance and
time intervals, up to 90,000 miles (144,000
km)/144 months. For most people, the
odometer reading will indicate when service
is needed. However, if you drive very little,
your vehicle should be serviced at the regular
time intervals shown in the schedule.
After 90,000 miles (144,000 km)/144
months, continue maintenance at the same
mileage/time intervals.ADDITIONAL MAINTENANCE
ITEMS FOR SEVERE OPERATING
CONDITIONS
Additional maintenance items for severe op-
erating conditionsshould be performed on
vehicles that are driven under especially de-
manding conditions. Additional maintenance
items should be performed if you primarily
operate your vehicle under the following
conditions:
• Repeated short trips of less than 5 miles (8 km).
• Repeated short trips of less than 10 miles (16 km) with outside temperatures remain-
ing below freezing.
• Operating in hot weather in stop-and-go “rush hour” traffic. • Extensive idling and/or low speed driving
for long distances, such as police, taxi or
door-to-door delivery use.
• Driving in dusty conditions.
• Driving on rough, muddy or salt spread roads.
• Using a car-top carrier.
If your vehicle is mostly operated under the
severe conditions, follow the severe use
maintenance intervals shown in the mainte-
nance schedule.
MAINTENANCE SCHEDULES
Maintenance and schedules9-7

CAUTION
Damage to engine caused by improper
maintenance or use of incorrect oil and fil-
ter quality and/or viscosity is not covered
by the INFINITI New Vehicle Limited
Warranty.
Your engine was filled with a high-quality
engine oil when it was built. You do not have
to change the oil before the first recom-
mended change interval. Oil and filter change
intervals depend upon how you use your
vehicle.
Operation under the following conditions
may require more frequent oil and filter
changes:
• repeated short distance driving at cold out- side temperatures
• driving in dusty conditions
• extensive idling
• stop and go commuting
For additional information on maintenance
schedules, refer to the “Maintenance and
schedules” section of this manual.AIR CONDITIONER SYSTEM
REFRIGERANT AND OIL
RECOMMENDATIONS
The air conditioner system in your INFINITI
vehicle must be charged with the refrigerant
HFO-1234yf (R-1234yf) and the oil,
Genuine NISSAN A/C System Oil Type PAG
(ND-OIL12) or the exact equivalents.
CAUTION
The use of any other refrigerant or oil will
cause severe damage to the air condition-
ing system and will require the replacement
of all air conditioner system components.
The refrigerant HFO-1234yf (R-1234yf) in
your INFINITI vehicle does not harm the
earth's ozone layer. Although this refrigerant
does not affect the earth's atmosphere, cer-
tain government regulations require the re-
covery and recycling of any refrigerant during
automotive air conditioner system service. Air
conditioner system should only be serviced by
trained and certified technicians to ensure
proper and safe operation (SAE J2845). An
INFINITI retailer has the trained technicians
and equipment needed to recover and recycle
your air conditioner system refrigerant. Only
new and SAEJ2842 certified evaporator(s)
shall be used as replacement parts. A damaged or leaking air conditioning evapo-
rator shall never be repaired or replaced with
one removed from a used or salvaged vehicle.
To replace a damaged or leaking evaporator,
use only new and SAE J2842 certified
evaporator(s). It is recommended that you
visit an INFINITI retailer when servicing your
air conditioner system.
Technical and consumer information10-7