INFINITI QX55 2023 Owners Manual

E–15 fuel
E-15 fuel is a mixture of approximately 15%
fuel ethanol and 85% unleaded gasoline.
E-15 can only be used in vehicles designed to
run on E-15 fuel. U.S. government regula-
tions require fuel ethanol dispensing pumps
to be identified with small, square, orange
and black label with the common abbrevia-
tion or the appropriate percentage for that
region.
E–85 fuel
E-85 fuel is a mixture of approximately 85%
fuel ethanol and 15% unleaded gasoline.
E-85 can only be used in a Flexible Fuel Ve-
hicle (FFV). Do not use E-85 in your vehicle.
U.S. government regulations require fuel
ethanol dispensing pumps to be identified by
a small, square, orange and black label with
the common abbreviation or the appropriate
percentage for that region.
Fuel containing MMT
MMT, or methylcyclopentadienyl manganese
tricarbonyl, is an octane boosting additive.
INFINITI does not recommend the use of fuel
containing MMT. Such fuel may adversely
affect vehicle performance, including the
emissions control system. Note that while
some fuel pumps label MMT content, not all
do, so you may have to consult your gasoline
retailer for more details.
Aftermarket fuel additives
INFINITI does not recommend the use of any
aftermarket fuel additives (for example, fuel
injector cleaner, octane booster, intake valve
deposit removers, etc.) which are sold com-
mercially. Many of these additives intended
for gum, varnish or deposit removal may con-
tain active solvents or similar ingredients that
can be harmful to the fuel system and engine.
Octane rating tips
Using unleaded gasoline with an octane rat-
ing lower than recommended can cause per-
sistent, heavy “spark knock.” (“Spark knock”
is a metallic rapping noise.) If severe, this can
lead to engine damage. If you detect a per-
sistent heavy spark knock even when using
gasoline of the stated octane rating, or if you
hear steady spark knock while holding a
steady speed on level roads, it is recom-
mended that you have an INFINITI retailer
correct the condition. Failure to correct the
condition is misuse of the vehicle, for which
INFINITI is not responsible.
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.
Technical and consumer information10-5

ENGINE OIL AND OIL FILTER
RECOMMENDATIONS
Selecting the correct oil
It is essential to choose the correct grade,
quality and viscosity engine oil to ensure sat-
isfactory engine life and performance. For
additional 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 and
Approval 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.
Oil viscosity
The engine oil viscosity or thickness changes
with temperature. Because of this, it is impor-
tant to select the engine oil viscosity based on
the temperatures at which the vehicle will be
operated before the next oil change. Choos-
ing an oil viscosity other than that recom-
mended could cause serious engine damage.
Selecting the correct oil filter
Your new INFINITI vehicle is equipped with a
high-quality Genuine NISSAN oil filter. When
replacing, use a Genuine NISSAN oil filter or
its equivalent for the reason described in
“Change intervals”.
Change intervals
The oil and oil filter change intervals for your
engine are based on the use of the specified
quality oils and filters. Using engine oil and
filters that are not of the specified quality, or
exceeding recommended oil and filter change
intervals could reduce engine life.
LTI2587
10-6Technical and consumer information

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

ENGINE
Model2.0L 4 cylinder (KR20DDET engine model)
Type Gasoline, 4-cycle, DOHC
Cylinder arrangement 4-cylinder, inline
Bore x Stroke when compression ratio = 8 Metric measure 84.0 mm x 90.1 mm
US measure 3.307 in x 3.547 in
when compression ratio = 14 Metric measure 84.0 mm x 88.9 mm
US measure 3.307 in x 3.500 in
Displacement when compression ratio = 8 Metric measure 1,997 cm
3
US measure121.86 cu in
when compression ratio = 14 Metric measure 1,970 cm3
US measure120.22 cu in
Firing order 1–3–4–2
Idle speed
No adjustment is necessary.
CVT in N (Neutral) position
Ignition timing (degree B.T.D.C. at idle speed)
CO%atidle
Spark plug
DILKAR7N9HG
Spark plug gap (Nominal) Metric measure
0.9 mm
US measure 0.035 in
Camshaft operation Timing chain
This spark ignition system complies with the Canadian standard ICES-002.
SPECIFICATIONS
10-8Technical and consumer information

WHEELS AND TIRES
Wheel typeOffset
Metric
MeasureOffset
US
Measure
Size
Aluminum 44 mm 1.73 in 20 x 8.5J
Tire size P255/45RF20
Spare tire Not equipped
DIMENSIONS AND WEIGHTS
Metric
MeasureUS
Measure
Overall length with license plate bracket 4,732 mm 186.3 in
Overall width without mirrors 1,903 mm 74.9 in
with mirrors 2,161 mm 85.1 in
Overall height to SAT antenna top 1,619 mm 63.7 in
Front track 1,625 mm 64.0 in
Rear track 1,620 mm 63.8 in
Wheelbase 2,800 mm 110.2 in
Gross vehicle weight rating Refer to the
“F.M.V.S.S./
C.M.V.S.S.
certification label”
on the center pillar
between the driver's
side front and rear
doors.
Gross axle weight rating
Front
Rear
Technical and consumer information10-9

When planning to drive your INFINITI ve-
hicle in another country,you should first find
out if the fuel available is suitable for your
vehicle's engine.
Using fuel with an octane rating that is too
low may cause engine damage. All gasoline
vehicles must be operated with unleaded
gasoline. Therefore, avoid taking your vehicle
to areas where appropriate fuel is not
available.
When transferring the registration of your
vehicle to another country, state, province
or district, it may be necessary to modify the
vehicle to meet local laws and regulations.
The laws and regulations for motor vehicle
emission control and safety standards vary
according to the country, state, province or
district; therefore, vehicle specifications may
differ.
When any vehicle is to be taken into another
country, state, province or district and reg-
istered, its modifications, transportation,
and registration are the responsibility of the
user. INFINITI is not responsible for any in-
convenience that may result.
VEHICLE IDENTIFICATION
NUMBER (VIN) PLATE
The VIN plate is located as shown. This num-
ber is the identification for your vehicle and is
used in the vehicle registration.
The VIN number is also available through the
center display screen. For additional informa-
tion, refer to the separate INFINITI InTouch™
Owner's Manual.
VEHICLE IDENTIFICATION
NUMBER (chassis number)
The vehicle identification number is located
as shown.
LTI2050LTI2332
WHEN TRAVELING OR
REGISTERING IN ANOTHER
COUNTRY VEHICLE IDENTIFICATION
10-10Technical and consumer information

ENGINE SERIAL NUMBER
The number is stamped on the engine as
shown.
F.M.V.S.S./C.M.V.S.S.
CERTIFICATION LABEL
The Federal/Canadian Motor Vehicle Safety
Standard (F.M.V.S.S./C.M.V.S.S.) certifica-
tion label is affixed as shown. This label con-
tains valuable vehicle information, such as:
(GVWR), (GAWR), month and year of manu-
facture, (VIN), etc. Review it carefully.
EMISSION CONTROL
INFORMATION LABEL
The emission control information label is at-
tached to the underside of the hood as
shown.
LTI2328WTI0172WTI0188
Technical and consumer information10-11

TIRE AND LOADING
INFORMATION LABEL
The cold tire pressure is shown on the Tire
and Loading Information label. The label is
located as shown.
AIR CONDITIONER
SPECIFICATION LABEL
The air conditioner specification label is af-
fixed to the underside of the hood as shown.
LTI0197LTI2357
10-12Technical and consumer information

Symbol NameReferenceGraphic
Caution ISO 7000 0434
Air Conditioning System
(MAC)ISO 2575 D01
MAC System Lubricant Type
(PAG–POE)
Requires Registered Technician to
Service MAC System
Flammable Refrigerant
Air Conditioner Specification Label Symbols 1. Find the centerline of the vehicle and
measure down 1.06 in (27 mm). Mark the
location on the fascia.
LTI2665
INSTALLING FRONT LICENSE PLATE
Technical and consumer information10-13

2. Cross-car alignment can be done usingcenterline in bracket and centerline in fas-
cia
OA.
3. Hold the license plate bracket to the fas- cia and mark two locations
OB.
4. Remove the license plate bracket and drill two 0.39 in (10 mm) holes in the locations
marked in the previous step. 5. Hold the license plate bracket to the fas-
cia and mark two locations
OC.
6. Remove the license plate bracket and drill two 0.79in (20 mm) holes in the locations
marked in the previous step. 7. Insert two screw grommetsODinto the
fascia.
8. Install the license plate bracket to the fas- cia with two screws
OE.
LTI2666LTI2667LTI2668
10-14Technical and consumer information