2019 INFINITI QX30 check engine

Parking brake*:
Check the parking brake operation regularly.
Also make sure that the vehicle is held se-
curely on a fairly steep hill when only the
parking brake is applied. If the parking brake
needs adjustment, it is recommended you
visit an INFINITI retailer for this service.
Seats:
Check seat position controls such as seat
adjusters, seatback recliner, etc. to ensure
they operate smoothly and that all latches
lock securely in every position. Check that the
head restraints move up and down smoothly
and that the locks (if so equipped) hold se-
curely in all latched positions.
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.
Steering wheel:
Check for changes in the steering condition,
such as excessive free play, hard steering or
strange noises.
Warning lights and chimes:
Make sure that all warning lights and chimes
are operating properly.Windshield defroster:
Check that the air comes out of the defroster
outlets properly and in good 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*:
Except for maintenance free battery, check
the fluid level in each cell. It should be be-
tween the “UPPER” and “LOWER” lines.
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 be-
tween the “MAX” and “MIN” lines on the res-
ervoir.
Coolant level*:
Check the coolant level when the engine is
cold.
Engine drive belt(s)*:
Make sure that no belt is 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 you visit an
INFINITI retailer for this service. See "Precau-
tions when starting and driving".
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
9-4Maintenance and Schedules

air conditioner after use is normal. If you
should notice any leaks or if gasoline fumes
are evident, check for the cause and have it
corrected immediately.
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 connec-
tions.
Underbody:
The underbody is frequently exposed to cor-
rosive substances such as those used on icy
roads or to control dust. It is very important to
remove these substances, otherwise rust will
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 information, see
"Cleaning exterior".
Windshield washer fluid*:
Check that there is adequate fluid in the res-
ervoir.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. Refer to
"General maintenance" in this section.
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 vehicle. Other
maintenance items and intervals are required.
When applicable, additional information can
be found in the “Do-it-yourself” section in
Chapter 8.
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, refer to "Recom-
mended fluids/lubricants and capacities".
EMISSION CONTROL SYSTEM
MAINTENANCE
Drive belts*:
Check engine drive belts for wear, fraying or
cracking and for proper tension. Replace any
damaged drive belts
Engine air filter*:
Replace at specified intervals. When driving
for prolonged periods in dusty conditions,
check/replace the filter more frequently.
Engine coolant*:
Replace coolant at the specified interval.
When adding or replacing coolant, be sure to
use only Genuine INFINITI Engine Coolant or
equivalent in its quality (BASF Glysantin®
G40®). (For additional information, refer to
"Engine cooling system".)
NOTE
Mixing any other type of coolant or the use
of non-distilled water may reduce the rec-
ommended service interval of the coolant.
EXPLANATION OF GENERAL
MAINTENANCE ITEMS
Maintenance and Schedules9-5

Engine oil and oil filter:
Replace engine oil and oil filter at the speci-
fied intervals. For recommended oil grade
and viscosity refer to "Recommended fluids/
lubricants and capacities".
Fuel filter:
Replace the fuel filter and drain the water at
the specified intervals.
Fuel lines*:
Check the fuel hoses, piping and connections
for leaks, looseness, or deterioration. Tighten
connections or replace parts as necessary.
Spark plugs:
Replace at specified intervals. Install new
plugs of the type as originally 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 dam-
aged parts immediately.
Brake pads, rotors, drums, & linings:
Check for wear, deterioration and fluid leaks.
Replace any deteriorated or damaged parts
immediately.
Exhaust system:
Visually inspect the exhaust pipes, muffler
and hangers for leaks, cracks, deterioration,
and damage. Tighten connections or replace
parts as necessary.
In-cabin microfilter:
Replace at specified intervals. When driving
for prolonged periods in dusty conditions, re-
place the filter more frequently.
Propeller shaft(s):
Check for damage, looseness, and grease
leakage. (4WD/AWD).Steering gear and linkage, axle and suspen-
sion parts, drive shaft boots:
Check for damage, looseness, and leakage of
oil or grease.
Tire rotation:
Tires should be rotated every 5,000 miles
(8,000 km) according to the instructions un-
der "Tire rotation*" earlier in this section.
When rotating tires, check for damage and
uneven wear. Replace if necessary.
Transmission fluid/oil, differential oil, trans-
fer case oil:
Visually inspect for signs of leakage at speci-
fied intervals.
9-6Maintenance and Schedules

Information about service
Resetting the maintenance service interval
display:
CAUTION
If the maintenance service interval display
has been inadvertently reset, this setting
can be corrected at an INFINITI retailer.
Have service work carried out as described
in the Maintenance Schedule. This may
otherwise lead to increased wear and dam-
age to the major assemblies or the vehicle.
An INFINITI retailer will reset the mainte-
nance service interval display after the service
work has been carried out. You can also ob-
tain further information on maintenance
work, for example.Special service requirements:
The prescribed service interval is based on
normal operation of the vehicle. Service work
will need to be performed more often if the
vehicle is operated under arduous conditions
or increased loads, for example:
•Regular city driving with frequent interme-
diate stops
•If the vehicle is primarily used to travel
short distance
•For frequent operation in mountainous
terrain or on poor road surfaces
•If the engine is often left idling for long
periods
In these or similar operating conditions, have,
for example, the air filter, engine oil and oil
filter changed more frequently. The tires must
be checked more frequently if the vehicle is
operated under increased loads. Further in-
formation can be obtained at an INFINITI
retailer.
9-8Maintenance and Schedules

The following tables show the standard maintenance schedule. Depending upon weather and atmospheric conditions, varying road surfaces,
individual driving habits and vehicle usage, additional or more frequent maintenance may be required. After 120,000 miles (192,000 km)/144
months, continue maintenance at the same mileage/time intervals.
EMISSION CONTROL SYSTEM MAINTENANCE (FOR 2.0L TURBO GASOLINE ENGINE)
Abbreviations: I = Inspect and correct or replace as necessary, R = Replace
MAINTENANCE OPERATIONmiles x 1,000MAINTENANCE INTERVAL
Perform at number of miles, kilometers or
months, whichever comes first.51015202530354045505560
(km x 1,000) (8) (16) (24) (32) (40) (48) (56) (64) (72) (80) (88) (96)
months 6 12 18 24 30 36 42 48 54 60 66 72
Engine compartment See NOTE (1)
V-belt See NOTE (2) I* I* I*
Replace every 155,000 miles or 180 months
Air cleaner filterReplace every 45,000 miles or 48 months
Fuel linesI* I* I*
Fuel filter See NOTE (3)
Engine coolant*Replace every 155,000 miles or 180 months
Engine oil R R R R R R
Engine oil filter R R R R R R
Spark plugsReplace every 45,000 miles or 48 months
NOTE:
(1) All visible parts checked for leaks and damage.
(2) In visible area only.
(3) Maintenance-free item.
* Maintenance items and intervals with ”*” are recommended by INFINITI for reliable vehicle operation. The owner need not perform such
maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and intervals are required
STANDARD MAINTENANCE
Maintenance and Schedules9-9

Abbreviations: I = Inspect and correct or replace as necessary, R = Replace
MAINTENANCE OPERATIONmiles x 1,000MAINTENANCE INTERVAL
Perform at number of miles, kilometers or
months, whichever comes first.65 70 75 80 85 90 95 100 105 110 115 120
(km x 1,000) (104) (112) (120) (128) (136) (144) (152) (160) (168) (176) (184) (192)
months 78 84 90 96 102 108 114 120 126 132 138 144
Engine compartment See NOTE (1)
V-belt See NOTE (2) I* I* I*
Replace every 155,000 miles or 180 months
Air cleaner filterReplace every 45,000 miles or 48 months
Fuel linesI* I* I*
Fuel filter See NOTE (3)
Engine coolant*Replace every 155,000 miles or 180 months
Engine oil R R R R R R
Engine oil filter R R R R R R
Spark plugsReplace every 45,000 miles or 48 months
NOTE:
(1) All visible parts checked for leaks and damage.
(2) In visible area only.
(3) Maintenance-free item.
* Maintenance items and intervals with ”*” are recommended by INFINITI for reliable vehicle operation. The owner need not perform such
maintenance in order to maintain the emission warranty or manufacturer recall liability. Other maintenance items and intervals are required
9-10Maintenance and Schedules

Aftermarket fuel additives
INFINITI does not recommend the use of any
aftermarket fuel additives (Example: fuel in-
jector 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 solvent 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 above can
cause persistent, heavy spark knock. (Spark
knock is a metallic rapping noise.) If severe,
this can lead to engine damage. If you detect
a persistent 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 you have an INFINITI retailer cor-
rect the condition. Failure to correct the con-
dition is misuse of the vehicle, for which
INFINITI is not responsible.
Incorrect ignition timing will result in knock-
ing, after-run and/or overheating. This in turn
may cause excessive fuel consumption or
damage to the engine. If any of the above
symptoms are encountered, have your ve-
hicle checked. It is recommended 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 no 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,
quality, and viscosity engine oil to ensure sat-
isfactory engine life and performance. For
additional information, refer to "Recom-
mended fluids/lubricants and capacities"
earlier in this section.
Select only engine oils that meet the MB229.5
specification and SAE viscosity standard. These
oils have the MB229.5 specification label on the
container. Oils which do not have the specified
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 that the engine oil viscosity be selected
based on the temperatures at which the vehicle
will be operated before the next oil change.
Choosing an oil viscosity other than that recom-
mended could cause serious engine damage.
Outside Temperature Range
Anticipated Before Next Oil Change
GASOLINE ENGINE OIL
JVT0428X
Technical information10-5

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 in-
form Transport Canada in addition to notify-
ing INFINITI.
If Transport Canada receives complaints, it
may open an investigation, and if it finds that
a safety defect exists in a group of vehicles, it
may request that INFINITI conduct a recall
campaign. However, Transport Canada can-
not become involved in individual problems
between you, your retailer, or INFINITI.
You may contact Transport Canada’s Defect
Investigations and Recalls Division toll free
at 1-800-333- 0510. You may also report
safety defects online at:
https://wwwapps.tc.gc.ca/Saf-Sec- Sur/7/
PCDB-BDPP/Index.aspx.
Additional information concerning motor
vehicle safety may be obtained from Trans-
port Canada’s Road Safety Information
Center 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 concerns
please contact our Consumer Information
Center 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 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 trans-
mission damage or unexpected vehicle
movement which could result in serious ve-
hicle 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 theMalfunction 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 sec-
onds, the I/M test condition is “ready”.
It is recommended you contact an INFINITI
retailer to set the “ready condition” or to pre-
pare the vehicle for testing.
READINESS FOR INSPECTION/
MAINTENANCE (I/M) TEST
10-18Technical information