2014 INFINITI QX50 service interval

Maintenance information
The maintenance intervals can be dis-
played for the engine oil, oil filter, tire
and other reminders.
To set a maintenance interval, select a
preferred item from the list.
You can also set to display a message to
remind you that the maintenance needs to
be performed.
The following example shows how to set
the engine oil maintenance information.
Use the same steps to set the other
maintenance information.
1. Set the interval (mileage) of the main-tenance schedule. To determine the
recommended maintenance interval,
refer to your “INFINITI Service and
Maintenance Guide”.
2. To display the reminder automatically when the desired distance is reached,
select the “Reminder” key.
3. Reset the driving distance to the new maintenance schedule.
4. To return to the previous screen, push the BACK button.
The unit can be converted between “US”
and “Metric”. (See “How to use SETTING button”
(P.4-14).)
SAA3003
Example
The Reminder will be automatically dis-
played when the specified distance has
been driven and every time the ignition
switch is pushed to the ACC or ON position.
The reminder will not appear while driving.
Select the “OK”key to hide the reminder
for the rest of the current drive.
To stop the reminder from appearing,
perform one of the following actions:
. Select the “Reset Distance”.
. Deactivate the “Reminder”.
. Increase the “Interval”distance to be
more than the current distance being
tracked.
Monitor, climate, audio, phone and voice recognition systems4-13

4-52Monitor, climate, audio, phone and voice recognition systems
the system then automatically changes
from the outside air circulation mode to
the recirculation mode.
When the intake air control button is
pushed under the following conditions,
the indicator light on the“
”side will
illuminate and the exhaust gas/outside
odor detecting sensor will turn on.
. The air flow control is not in the front
defroster mode (the indicator light on
the “
”front defroster button is
turned off).
. The outside temperature is about 328F
(08C) or more.
. The exhaust gas/outside odor detecting
sensor detects industrial odors such as
pulp or chemicals and exhaust gas
such as gasoline or diesel.
When the automatic intake air control is
ON, for the first 5 minutes, the recircula-
tion mode is selected to prevent dust, dirt
and pollen from entering the vehicle and
cleans the air inside of the vehicle with
Plasmacluster
®ions that are emitted from
the ventilator.
After 5 minutes, the sensor detects outside
odor and exhaust gas and automatically
alternates between the recirculation mode
and outside air circulation mode.
OPERATING TIPS
When the engine coolant temperature and
outside air temperature are low, the air
flow from the foot outlets may not operate.
This is not a malfunction. After the coolant
temperature warms up, air will flow nor-
mally from the foot outlets.
SAA1983
The sunload sensor*Aon the instrument
panel helps maintain a constant tempera-
ture. Do not put anything on or around this
sensor.
IN-CABIN MICROFILTER
To make sure that the air conditioner
heats, defogs/defrosts and ventilates effi-
ciently, replace the filter according the
specified maintenance intervals listed in
the INFINITI Service and Maintenance
Guide. To replace the filter, contact an
INFINITI retailer.
The filter should be replaced if the air flow
decreases significantly or if windows fog

8-2Maintenance and do-it-yourself
Some day-to-day and regular maintenance
is essential to maintain your vehicle good
mechanical condition, as well as its emis-
sion and engine performance.
It is the owner’s responsibility to make
sure that the scheduled maintenance, as
well as general maintenance, is performed.
As the vehicle owner, you are the only one
who can ensure that your vehicle receives
the proper maintenance care. You are a
vital link in the maintenance chain.
SCHEDULED MAINTENANCE
For your convenience, both required and
optional scheduled maintenance items are
described and listed in your“INFINITI
Service and Maintenance Guide”. You must
refer to that guide to ensure that necessary
maintenance is performed on your vehicle
at regular intervals.
GENERAL MAINTENANCE
General maintenance includes those items
which should be checked during normal
day-to-day operation. They are essential for
proper vehicle operation. It is your respon-
sibility to perform these procedures reg-
ularly as prescribed.
Performing general maintenance checks requires minimal mechanical skill and only
a few general automotive tools.
These checks or inspections can be done
by yourself, a qualified technician or, if you
prefer, an INFINITI retailer.
WHERE TO GO FOR SERVICE
If maintenance service is required or your
vehicle appears to malfunction, have the
systems checked and serviced by an
INFINITI retailer.
INFINITI technicians are well-trained spe-
cialists and are kept up to date with the
latest service information through techni-
cal bulletins, service tips, and in-retailer-
ship information systems. They are
completely qualified to work on INFINITI
vehicles
beforework begins.
You can be confident that an INFINITI
retailer’s service department performs the
best job to meet the maintenance require-
ments on your vehicle. During the normal day-to-day operation of
the vehicle, general maintenance should
be performed regularly as prescribed in
this section. If you detect any unusual
sounds, vibrations or smell, be sure to
check for the cause or have an INFINITI
retailer do it promptly. In addition, you
should notify an INFINITI retailer if you
think that repairs are required.
When performing any checks or mainte-
nance work, see
“Maintenance precau-
tions” (P.8-5).
EXPLANATION OF MAINTENANCE
ITEMS
Additional information on the following
items with “*” is found later in this
section.
Outside the vehicle
The maintenance items listed here should
be performed from time to time, unless
otherwise specified.
Doors and engine hood: Check that all
doors and the engine hood, operate
properly. Also ensure 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
MAINTENANCE REQUIREMENT GENERAL MAINTENANCE

8-18Maintenance and do-it-yourself
SDI2020
REPLACING SPARK PLUGS
If replacement is required, see an INFINITI
retailer for servicing.
Iridium-tipped spark plugs
It is not necessary to replace the iridium-
tipped spark plugs as frequently as the
conventional type spark plugs since they
will last much longer. Follow the main-
tenance schedule in“INFINITI Service and
Maintenance Guide” , but do not reuse
them by cleaning or regapping. Always replace spark plugs with recom-
mended or equivalent ones.
SDI2033
Remove the retainers*1as illustrated and
pull out the filter element
*2.
The filter element should not be cleaned
and reused. Replace it according to the
maintenance intervals. See “INFINITI Ser-
vice and Maintenance Guide” for mainte-
nance intervals. When replacing the filter,
AIR CLEANER

8-22Maintenance and do-it-yourself
occasional 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,
see the maintenance log section of your
“INFINITI Service and Maintenance Guide”
for maintenance intervals.
SDI1479A
ENGINE COMPARTMENT
CAUTION
Never use a fuse of a higher or lower
amperage rating than that specified on the
fuse box cover. This could damage the
electrical system or cause a fire.
If any electrical equipment does not
operate, check for an open fuse.
Be sure the ignition switch is pushed to the
OFF or LOCK position and the headlight
switch is turned to OFF. 1. Open the engine hood and remove the
battery cover.
2. Remove the fuse/fusible link holder cover.
3. Remove the fuse with the fuse puller.
FUSES

8-38Maintenance and do-it-yourself
The wheel nuts must be kept tigh-
tened to the specification at all
times. It is recommended that wheel
nuts be tightened to the specifica-
tion at each tire rotation interval.
WARNING
.After rotating the tires, check and
adjust the tire pressure.
. Retighten the wheel nuts when
the vehicle has been driven for
600 miles (1,000 km) (also in
cases of a flat tire, etc.).
. Do not include the T-type spare
tire or any other small size spare
tire in the tire rotation.
. For additional information regard-
ing tires, refer to “Important Tire
Safety Information ”(US) or “Tire
Safety Information ”(Canada) in
the Warranty Information Booklet.
SDI1663
Tire wear and damage
1.Wear indicator
2.Wear indicator location mark
WARNING
. Tires should be periodically in-
spected for wear, cracking, bul-
ging or objects caught in the
tread. If excessive wear, cracks,
bulging or deep cuts are found,
the tire(s) should be replaced. .
The original tires have built-in
tread wear indicators. When wear
indicators are visible, the tire(s)
should be replaced.
. Tires degrade with age and use.
Have tires, including the spare,
over 6 years old checked by a
qualified technician, because
some tire damage may not be
obvious. Replace the tires as
necessary to prevent tire failure
and possible personal injury.
. Improper service of the spare tire
may result in serious personal
injury. If it is necessary to repair
the spare tire, contact an INFINITI
retailer.
. For additional information regard-
ing tires, refer to “Important Tire
Safety Information ”(US) or “Tire
Safety Information ”(Canada) in
the Warranty Information Booklet.

above symptoms are encountered, have
your vehicle checked at an INFINITI retailer
or other competent service facility.
However, now and then you may notice
light spark knock for a short time while
accelerating 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.
JVT0159X
1. API certification mark
2. API service symbol
ENGINE OIL AND OIL FILTER RE-
COMMENDATION
Selecting the correct oil
It is essential to choose the correct grade,
quality, and viscosity engine oil to ensure
satisfactory engine life and performance,
see“Capacities and recommended fuel/
lubricants” (P.9-2). INFINITI recommends
the use of an energy conserving oil in
order to improve fuel economy.
Select only engine oils that meet the American Petroleum Institute (API) certifi-
cation or International Lubricant Standar-
dization 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 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.
Technical and consumer information9-5

9-6Technical and consumer information
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 important 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 recommended
could cause serious engine damage.
Selecting the correct oil filter
Your new vehicle is equipped with a high-
quality genuine NISSAN oil filter. When
replacing, use the genuine 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. Oil and
filter other than the specified quality, or oil
and filter change intervals longer than
recommended could reduce engine life.
Damage to engines caused by improper
maintenance or use of incorrect oil andfilter quality and/or viscosity is not covered
by the new INFINITI vehicle limited warran-
ties.
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
recommended 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
outside temperatures,
. driving in dusty conditions,
. extensive idling,
. stop and go “rush hour”traffic,
Refer to the “INFINITI Service and Main-
tenance Guide” for the maintenance sche-
dule.AIR CONDITIONING SYSTEM RE-
FRIGERANT AND LUBRICANT RE-
COMMENDATIONS
The air conditioning system in your
INFINITI vehicle must be charged with the
refrigerant HFC-134a (R-134a) and the
lubricant, NISSAN A/C system oil Type S
or the exact equivalents.
CAUTION
The use of any other refrigerant or lubricant
will cause severe damage to the air con-
ditioning system and will require the repla-
cement of all air conditioner system
components.
The refrigerant HFC-134a (R-134a) in your
INFINITI vehicle will not harm the earth’s
ozone layer. Although this refrigerant does
not affect the earth’s atmosphere, certain
governmental regulations require the re-
covery and recycling of any refrigerant
during automotive air conditioning system
service. Your INFINITI retailer has the
trained technicians and equipment needed
to recover and recycle your air conditioning
system refrigerant.
Contact an INFINITI retailer when servicing
your air conditioning system.