2023 INFINITI QX55 differential

If the low tire pressure warning light illumi-
nates continuously and the “Flat Tire – Visit
dealer" warning appears in the vehicle infor-
mation display:
• Do not exceed 50 mph (80 km/h).
• Increase your following distance to allowfor increased stopping distances.
• Avoid sudden maneuvers, hard cornering and hard braking.
WARNING
• Although you can continue driving with a
punctured run-flat tire, remember that
vehicle handling stability is reduced,
which could lead to an accident and per-
sonal injury. Also, driving a long distance
at high speeds may damage the tire.
• Do not drive at speeds above 50 mph (80
km/h) and do not drive more than ap-
proximately 93 miles (150 km) with a
punctured run-flat tire. The actual dis-
tance the vehicle can be driven on a flat
tire depends on outside temperature, ve-
hicle load, read conditions and other
factors.
• Drive safely at reduced speeds. Avoid
hard cornering or braking, which may
cause you to lose control of the vehicle. •
If you detect any unusual sounds or vi-
brations while driving with a punctured
run-flat tire, pull off the road to a safe
location and stop the vehicle as soon as
possible. The tire may be seriously dam-
aged and need to be replaced.
CAUTION
• Never install tire chains on a punctured
run-flat tire, as this could damage your
vehicle.
• Avoid driving over any projection or pot-
hole, as the clearance between the ve-
hicle and the ground is smaller than
normal.
• Do not enter an automated car wash
with a punctured run-flat tire.
• Have the punctured tire inspected by an
INFINITI retailer or other authorized re-
pair shop. Replace the tire as soon as
possible if the tire is seriously damaged. •
Always use tires of the same type, size,
brand, construction (bias, bias-belted or
radial), and tread pattern on all four
wheels. Failure to do so may result in a
circumference difference between tires
on the front and rear axles which will
cause excessive tire wear and may dam-
age the transmission, transfer case and
differential gears (AWD models).
• ONLY use spare tires specified for the
AWD model.
• If excessive tire wear is found, it is rec-
ommended that all four tires be replaced
with tires of the same size, brand, con-
struction and tread pattern. The tire
pressure and wheel alignment should
also be checked and corrected as neces-
sary. It is recommended that you visit an
INFINITI retailer for this service.
TIRE CHAINS
CAUTION
Tire chains/cables should not be installed
on P255/45RF20 size tires. Installation of
the tire chains/cables on P255/45RF20
size tires will cause damage to the vehicle.
If you plan to use tire chains/cables, you
should install P235/55RF19 size tires on
your vehicle.
Do-it-yourself8-37

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

2.0L 4 CYLINDER (KR20DDET
engine model)
The following shows the maintenance
schedule.
Choose the maintenance schedule needed
based on your vehicle driving conditions.
After 90,000 miles (144,000 km)/144
months, continue maintenance at the same
mileage/time interval.
NOTE:
For information regarding coolant or spark
plug replacement, see “Additional informa-
tion” (P. 9-25).
3,750 miles/(6,000 km)/6 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
• Not applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear and linkage
• Axle & suspension parts
• Horn, lights, signals, wipers, rear hatch/hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts
• Hose inspections
• Engine air filter
• Suspension components (shocks, sub- frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
• Differential oil (AWD models)
7,500 miles/(12,000 km)/12 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Brake lines & cables
• Brake pads & rotors
• CVT fluid
• Propeller shaft (AWD models)
• Drive shaft boots
• Transfer case oil (AWD models)
• Differential oil (AWD models)
• Horn, lights, signals, wipers, rear hatch/ hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts
• Hose inspections
• Engine air filter
• Suspension components (shocks, sub- frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
Essentials:
• Replace engine oil & filter (1)
• Tire rotation
Maintenance and schedules9-9

Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear and linkage
• Axle & suspension parts
Essentials:
• Replace brake fluid
(1) If the oil replacement indicator is dis-
played, change the engine oil and filter within
two weeks or less than 500 miles (800 km).11,250 miles/(18,000 km)/18 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Intelligent key battery
• Horn, lights, signals, wipers, rear hatch/hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts
• Hose inspections
• Engine air filter
• Suspension components (shocks, sub- frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
• Differential oil (AWD models)
Essentials:
• Replace in-cabin microfilter Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear and linkage
• Axle & suspension parts
9-10Maintenance and schedules

15,000 miles/(24,000 km)/
24 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Brake lines & cables
• Brake pads & rotors
• CVT fluid
• Fuel tank vapor vent system*
• Fuel lines/connections*
• Exhaust system
• Steering gear and linkage
• Axle & suspension parts
• Propeller shaft (AWD models)
• Drive shaft boots
• Transfer case oil (AWD models) (2)
• Differential oil (AWD models) (2)
• Horn, lights, signals, wipers, rear hatch/hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts
• Hose inspections
• Engine air filter • Suspension components (shocks, sub-
frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
Essentials:
• Replace engine oil & filter (1)
• Tire rotation
• Replace brake fluid
Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear and linkage
• Axle & suspension parts
Essentials:
• Replace brake fluid
(1) If the oil replacement indicator is dis-
played, change the engine oil and filter within
two weeks or less than 500 miles (800 km).
(2) If using a car-top carrier, or driving on
rough or muddy roads, change (not just in-
spect) oil every 20,000 miles (32,000 km) or
24 months. * Maintenance items and intervals with“*”
are recommended by INFINITI for reliable
vehicle operation. The owner need not per-
form such maintenance in order to maintain
the emission warranty or manufacturer recall
liability. Other maintenance items and inter-
vals are required.
Maintenance and schedules9-11

18,750 miles/(30,000 km)/
30 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Not applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear and linkage
• Axle & suspension parts
• Horn, lights, signals, wipers, rear hatch/hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts
• Hose inspections
• Engine air filter
• Suspension components (shocks, sub- frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
• Differential oil (AWD models)
22,500 miles/(36,000 km)/
36 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Brake lines & cables
• Brake pads & rotors
• CVT fluid
• Propeller shaft (AWD models)
• Drive shaft boots
• Transfer case oil (AWD models)
• Differential oil (AWD models)
• Horn, lights, signals, wipers, rear hatch/ hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts
• Hose inspections
• Engine air filter
• Suspension components (shocks, sub- frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth Essentials:
• Replace engine oil & filter (1)
• Tire rotation
• Replace in-cabin microfilter
• Replace Intelligent Key battery
Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear and linkage
• Axle & suspension parts
Essentials:
• Replace brake fluid
(1) If the oil replacement indicator is dis-
played, change the engine oil and filter within
two weeks or less than 500 miles (800 km).
9-12Maintenance and schedules

26,250 miles/(42,000 km)/
42 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Not applicable. Proceed to next interval.
Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear and linkage
• Axle & suspension parts
• Horn, lights, signals, wipers, rear hatch/hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts
• Hose inspections
• Engine air filter
• Suspension components (shocks, sub- frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
• Differential oil (AWD models)
30,000 miles/(48,000 km)/
48 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Brake lines & cables
• Brake pads & rotors
• CVT fluid
• Engine drive belts*
• Fuel tank vapor vent system*
• Fuel lines/connections*
• Exhaust system
• Steering gear and linkage
• Axle & suspension parts
• Propeller shaft (AWD models)
• Drive shaft boots
• Transfer case oil (AWD models) (3)
• Differential oil (AWD models) (3)
• Horn, lights, signals, wipers, rear hatch/ hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Hose inspections
• Suspension components (shocks, sub- frame, tie rods) • Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
Essentials:
• Replace engine oil & filter (1)
• Replace engine air filter (2)
• Replace brake fluid
• Tire rotation
Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear and linkage
• Axle & suspension parts
Essentials:
• Replace brake fluid
(1) If the oil replacement indicator is dis-
played, change the engine oil and filter within
two weeks or less than 500 miles (800 km).
(2) If operating mainly in dusty conditions,
more frequent maintenance may be required.
Maintenance and schedules9-13

(3) If using a car-top carrier, or driving on
rough or muddy roads, change (not just in-
spect) oil every 20,000 miles (32,000 km) or
24 months.
* Maintenance items and intervals with“*”
are recommended by INFINITI for reliable
vehicle operation. The owner need not per-
form such maintenance in order to maintain
the emission warranty or manufacturer recall
liability. Other maintenance items and inter-
vals are required.33,750 miles/(54,000 km)/
54 months
Perform at number of miles, kilometers or
months, whichever comes first.
Standard maintenance:
Inspections:
• Horn, lights, signals, wipers, rear hatch/hood lift supports
• All fluids inspected (engine, wiper, brake, power steering, coolant)
• Engine drive belts
• Hose inspections
• Engine air filter
• Suspension components (shocks, sub- frame, tie rods)
• Battery terminals and cables, battery test
• Tire pressure, treadwear and depth
• Differential oil (AWD models)
Essentials:
• Replace in-cabin microfilter
• Replace Intelligent Key battery Severe use maintenance:
Inspections:
• Brake pads & rotors
• Exhaust system
• Propeller shaft (AWD models)
• Drive shaft boots
• Steering gear and linkage
• Axle & suspension parts
9-14Maintenance and schedules