check engine INFINITI QX70 2014 Service And Maintenance Guide

The following descriptions are pro-
vided to give you a better understand-
ing of the scheduled maintenance
items that should be regularly
checked or replaced. The mainte-
nance log indicates at which
mileage/time intervals each item re-
quires service.
In addition to scheduled mainte-
nance, your Infiniti requires that
some items be checked during nor-
mal day-to-day operation. You can
find these items listed under “Gen-
eral Maintenance” in Chapter 8 of
your Owner’s manual.
Items marked with“*”are recom-
mended by Infiniti for reliable vehicle
operation. You are not required to per-
form such maintenance in order to
maintain the emission warranty or
manufacturer recall liability. Other
maintenance items and intervals are
required. When applicable, additional informa-
tion can be found in the “Do-it-
yourself” section in Chapter 8 of your
Owner’s Manual.
NOTE:
Nissan North America
does not advocate the use
of non-OEM approved
aftermarket flushing
systems and strongly
advises against performing
these services on a Infinti
product. Many of the
aftermarket flushing
systems use non- OEM
approved chemicals or
solvents, the use of which
has not been validated by
Nissan North America.
For recommended fuel, lubricants,
fluids, grease, and refrigerant refer to
Chapter 9 in your Owner’s Manual.
Emission Control System
Maintenance:
Drive Belts*
Check engine drive belts for wear,
fraying or cracking and for proper ten-
sion. 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 engine coolant at the speci-
fied interval. The recommended ser-
vice interval of the factory-fill coolant
is 105,000 miles (168,000 km) or
7 years, whichever comes first. When
adding or replacing coolant, be sure
to use only Genuine Nissan Long Life
Antifreeze/Coolant (Blue) or equiva-
lent with the proper mixture. (Refer to
the owner’s manual to determine the
proper mixture for your area). Subse-
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS
9

quent replacement of Genuine Nissan
Long Life Antifreeze/Coolant (Blue)
should occur every 75,000 miles
(120,000 km) or 5 years, whichever
comes first. NOTE: Mixing any other
type of coolant or the use of non-
distilled water will reduce the recom-
mended service interval of the cool-
ant.
Hybrid Electronic Vehicle (HEV)
Inverter Coolant
Replace inverter coolant at the speci-
fied interval. The recommended ser-
vice interval of the factory-fill coolant
is 125,000 miles (200,000 km) or
15 years, whichever comes first. Sub-
sequent replacement of Genuine
Nissan Long Life Antifreeze/Coolant
(Blue) should occur every
75,000 miles (120,000 km) or
5 years, whichever comes first. When
adding or replacing coolant, be sure
to use only Genuine Nissan Long Life
Antifreeze/Coolant (Blue) or equiva-
lent with the proper mixture. (Refer tothe Owner’s Manual to determine the
proper mixture for your area.)
NOTE: Mixing any other type of cool-
ant or the use of non-distilled water
will reduce the recommended service
interval of the coolant.
Engine Oil and Oil Filter
Replace engine oil and oil filter at the
specified intervals. For recom-
mended oil grade and viscosity refer
to Chapter 9 in your Owner’s Manual.
Engine Valve Clearance*
Inspect only if valve noise increases.
Adjust valve clearance if necessary.
Evaporative Emissions Control Vapor
Lines*
Check vapor lines and connections
for leaks or looseness. Tighten con-
nections or replace parts as neces-
sary.
Fuel Filter
Maintenance-free item (In-tank type
filter).
Fuel Lines*
Check the fuel hoses, piping and con-
nections for leaks, looseness, or de-
terioration. Tighten connections or re-
place parts as necessary.
Spark Plugs
Replace at specified intervals. Re-
placement Intervals for IPL models
differ from non-IPL models. Install
new plugs of the same type as origi-
nally equipped.
Chassis
and Body Maintenance:
Brake Lines and Cables
Visually inspect for proper installa-
tion. Check for chafing, cracks, dete-
rioration, and signs of leaking. Re-
place any deteriorated or damaged
parts immediately.
EXPLANATION OF SCHEDULED MAINTENANCE ITEMS
10

Check the following itemsmore frequently after driving
off-road through deep sand, mud or water:
●Brake pads and rotors
●Brake lines and hoses
●Differential oil, tr ansmissionfluid, and transf er case oil
●Steering linkage
●Propeller shafts and drive shafts
●Engine air filter
●In-cabin microfilter
OFF-ROAD MAINTENANCE (QX80 ONLY)
12