maintenance INFINITI QX 2011 Service Manual

Warning lights and chimes:Make sure that all
warning lights and chimes are operating prop-
erly.
Windshield defroster: Check that the air comes
out of the defroster outlets properly and in
sufficient 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*: Check the fluid level in each cell. It
should be between the MAX and MIN lines.
Vehicles operated in high temperatures or un-
der severe condition require frequent checks of
the battery fluid level.
Brake fluid level*: Make sure that the brake
fluid level is between the MAX and MIN lines on
the reservoir.
Engine coolant level*: Check the coolant level
when the engine is cold. Engine drive belts*:
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 by an INFINITI retailer. (See
“PRECAUTIONS WHEN STARTING AND DRIVING”
in the “5. Starting and driving” section for
exhaust gas (carbon monoxide).)
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 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 cor-
rected immediately.
Power steering fluid level* and lines: Check the
level when the fluid is cold, with the engine off.
Check the lines for proper attachment, leaks,
cracks, etc. 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
connections.
Underbody: The underbody is frequently ex-
posed to corrosive substances such as those
used on icy roads or to control dust. It is very
important to remove these substances, other-
wise rust will form on the floor pan, frame, fuel
lines and around the exhaust system. At the
end of winter, the underbody should be thor-
oughly flushed with plain water, being careful
to clean those areas where mud and dirt may
accumulate. For additional information, see
“CLEANING EXTERIOR” in the “7. Appearance
and care” section.
Windshield washer fluid*: Check that there is
adequate fluid in the reservoir.
8-4Maintenance and do-it-yourself

When performing any inspection or mainte-
nance work on your vehicle, always take care to
prevent serious accidental injury to yourself or
damage to the vehicle. The following are gen-
eral precautions which should be closely ob-
served.
WARNING
●Park the vehicle on a level surface, apply the
parking brake securely and block the wheels
to prevent the vehicle from moving. Move
the selector lever to P (Park).
● Be sure the ignition switch is in the OFF or
LOCK position when performing any parts
replacement or repairs.
● Never connect or disconnect the battery or
any transistorized component while the ig-
nition switch is in the ON position.
● Never leave the engine or automatic trans-
mission related component harnesses dis-
connected while the ignition switch is in the
ON position.
● If you must work with the engine running,
keep your hands, clothing, hair and tools
away from moving fans, belts and any other
moving parts. ●
It is advisable to secure or remove any loose
clothing and remove any jewelry, such as
rings, watches, etc. before working on your
vehicle.
● Always wear eye protection whenever you
work on your vehicle.
● If you must run the engine in an enclosed
space such as a garage, be sure there is
proper ventilation for exhaust gases to
escape.
● Never get under the vehicle while it is sup-
ported only by a jack. If it is necessary to
work under the vehicle, support it with
safety stands.
● Keep smoking materials, flame and sparks
away from fuel tank and the battery.
● Your vehicle is equipped with an automatic
engine cooling fan. It may come on at any
time without warning, even if the ignition
key is in the OFF position and the engine is
not running. To avoid injury, always discon-
nect the negative battery cable before work-
ing near the fan.
● On gasoline engine models, the fuel filter or
fuel lines should be serviced by an INFINITI
retailer because the fuel lines are under high
pressure even when the engine is off.
CAUTION
● Do not work under the hood while the engine
is hot. Turn the engine off and wait until it
cools down.
● Avoid direct contact with used engine oil and
coolant. Improperly disposed engine oil,
coolant, and/or other vehicle fluids can dam-
age the environment. Always conform to lo-
cal regulations for disposal of vehicle fluid.
This “8. Maintenance and do-it-yourself” sec-
tion gives instructions regarding only those
items which are relatively easy for an owner to
perform.
A genuine INFINITI Service Manual is also avail-
able. (See “OWNER’S MANUAL/SERVICE
MANUAL ORDER INFORMATION” in the “9. Tech-
nical and consumer information” section.)
You should be aware that incomplete or im-
proper servicing may result in operating diffi-
culties or excessive emissions, and could affect
your warranty coverage. If in doubt about any
servicing, we recommend that it be done by an
INFINITI retailer.
MAINTENANCE PRECAUTIONS
Maintenance and do-it-yourself8-5

VK56VD ENGINE MODEL
1. Window washer fluid reservoir
2. Fuse/fusible link holder
3. Engine oil dipstick
4. Power steering fluid reservoir5. Engine oil filler cap
6. Brake fluid reservoir
7. Fuse/fusible link holder
8. Battery
9. Radiator filler cap10. Engine coolant reservoir
11. Drive belts
12. Air cleaner
SDI2585
ENGINE COMPARTMENT CHECK
LOCATIONS
8-6Maintenance and do-it-yourself

The engine cooling system is filled at the factory
with a pre-diluted mixture of 50% Genuine
NISSAN Long Life Antifreeze/Coolant (blue) and
50% water to provide year-round anti-freeze
and coolant protection. The antifreeze solution
contains rust and corrosion inhibitors. Addi-
tional engine cooling system additives are not
necessary.
WARNING
●Never remove the radiator or coolant reser-
voir cap when the engine is hot. Wait until
the engine and radiator cool down. Serious
burns could be caused by high pressure fluid
escaping from the radiator. See precautions
in “IF YOUR VEHICLE OVERHEATS” in the “6.
In case of emergency” section of this
manual.
● The radiator is equipped with a pressure
type radiator cap. To prevent engine dam-
age, use only a genuine NISSAN radiator cap.
CAUTION
●When adding or replacing coolant, be sure to
use only Genuine NISSAN Long Life
Antifreeze/Coolant (blue) or equivalent. Genu-
ine NISSAN Long Life Antifreeze/Coolant
(blue) is pre-diluted to provide antifreeze pro-
tection to 34°F (37°C). If additional freeze
protection is needed due to weather where
you operate your vehicle, add Genuine NISSAN
Long Life Antifreeze/Coolant (blue) concen-
trate following the directions on the con-
tainer. If an equivalent coolant other than
Genuine NISSAN Long Life Antifreeze/Coolant
(blue) is used, follow the coolant manufactur-
er’s instructions to maintain minimum anti-
freeze protection to 34°F (37°C). The use of
other types of coolant solutions other than
Genuine NISSAN Long Life Antifreeze/Coolant
(blue) or equivalent may damage the engine
cooling system.
●The life expectancy of the factory-fill coolant
is 105,000 miles (168,000 km) or 7 years. Mix-
ing any other type of coolant other than Genu-
ine NISSAN Long Life Antifreeze/Coolant
(blue), including Genuine NISSAN Long Life
Antifreeze/Coolant (green), or the use of non-
distilled water will reduce the life expectancy
of the factory-fill coolant. Refer to the Nissan
Service and Maintenance Guide for more
details.
Outside
temperature down to Antifreeze Demineral-
ized water
or distilled water
°F °C
30 35 50% 50%
NOTE:
The life expectancy of the factory-fill coolant is
105,000 miles (168,000 km) or 7 years. Mixing
any other type of coolant or the use of non-
distilled water will reduce the life expectancy of
the factory-fill coolant. Refer to the INFINITI Ser-
vice and Maintenance Guide for more details.
The use of other types of coolant solutions may
damage the engine cooling system.
ENGINE COOLING SYSTEM
Maintenance and do-it-yourself8-7

CHECKING ENGINE COOLANT LEVEL
Check the coolant levelin the reservoir when the
engine is cold. If the coolant level is below MIN
2, open the reservoir tank cap and add coolant
up to the MAX
1level. If the reservoir tank is
empty, check the coolant level in the radiator
when the engine is cold. If there is insufficient
coolant in the radiator, fill the radiator with
coolant up to the filler opening and also add it
to the reservoir tank up to the MAX level
1.
Tighten the cap securely after adding engine
coolant. This vehicle contains Genuine NISSAN Long Life
Antifreeze/Coolant (blue). The life expectancy of
the factory-fill coolant is 105,000 miles
(168,000 km) or 7 years. Mixing any other type
of coolant or the use of non-distilled water will
reduce the life expectancy of the factory-fill
coolant. Refer to the INFINITI Service and Main-
tenance Guide for more details.
If the cooling system requires coolant fre-
quently, have it checked by an INFINITI retailer.
CHANGING ENGINE COOLANT
Major cooling system repairs should be per-
formed by an INFINITI retailer. The service pro-
cedures can be found in the appropriate INFINITI
Service Manual.
Improper servicing can result in reduced heater
performance and engine overheating.
WARNING
●
To avoid the danger of being scalded, never
change the coolant when the engine is hot.
● Never remove the radiator cap or coolant res-
ervoir cap when the engine is hot. Serious
burns could be caused by high pressure fluid
escaping from the radiator. ●
Avoid direct skin contact with used coolant.
If skin contact is made, wash thoroughly
with soap or hand cleaner as soon as
possible.
● Keep coolant out of reach of children and
pets.
Engine coolant must be disposed of properly.
Check your local regulations.
SDI2511
8-8Maintenance and do-it-yourself

CHECKING ENGINE OIL LEVEL
1. Park the vehicle on a level surface andapply the parking brake.
2. Run the engine until it reaches operating temperature.
3. Turn off the engine. Wait more than 15
minutes for the oil to drain back into the oil
pan.
4. Remove the dipstick and wipe it clean. Reinsert it all the way.
5. Remove the dipstick again and check the oil level. It should be within the range
1.
If the oil level is below
2, remove the oil
filler cap and pour recommended oil
through the opening. Do not overfill
3.6. Recheck oil level with the dipstick.
It is normal to add some oil between oil mainte-
nance intervals or during the break-in period,
depending on the severity of operating condi-
tions.
CAUTION
Oil level should be checked regularly. Operat-
ing the engine with an insufficient amount of oil
can damage the engine, and such damage is
not covered by warranty.
CHANGING ENGINE OIL AND FILTER
Vehicle set-up
1. Park the vehicle on a level surface and
apply the parking brake.
2. Run the engine until it reaches operating temperature.
3. Turn the engine off and wait more than 15 minutes.
4. Raise and support the vehicle using a suitable floor jack and safety jack stands.
●Place the safety jack stands under the
vehicle jack-up points.
● A suitable adapter should be attached to
the jack stand saddle.
5. Remove the engine undercover.
● Remove the bolts that hold the under-
cover in place.
CAUTION
Make sure the correct lifting and support
points are used to avoid vehicle damage.
SDI2531
ENGINE OIL
Maintenance and do-it-yourself8-9

Engine oil and filter
1. Place a large drain pan under the drainplug.
2. Remove the oil filler cap.
3. Remove the drain plug
1with a wrench
and completely drain the oil.
CAUTION
Be careful not to burn yourself, as the engine oil
is hot.
●Waste oil must be disposed of properly.
● Check your local regulations.
4. (Perform steps 4 to 7 only when the
engine oil filter change is needed.)
Loosen the oil filter2with an oil filter
wrench. Remove the oil filter by turning it by
hand.
5. Wipe the engine oil filter mounting sur- face with a clean rag.
CAUTION
Be sure to remove any old rubber gasket re-
maining on the mounting surface of the engine.
Failure to do so could lead to engine damage.
6. Coat the gasket on the new filter with clean engine oil.
7. Screw in the oil filter clockwise until a slight resistance is felt, then tighten ad-
ditionally more than 2/3 turn.
Oil filter tightening torque:11 to 15 ft-lb
(15 to 21 N·m)
8. Clean and re-install the drain plug with a
new washer. Securely tighten the drain
plug with a wrench.
Drain plug tightening torque:22 to 29 ft-lb
(29 to 39 N·m)
Do not use excessive force.
9. Refill engine with recommended oil and install the oil filler cap securely.
CAUTION
The dipstick must be inserted in place to pre-
vent oil spillage from the dipstick hole while
filling the engine with oil.
See “CAPACITIES AND RECOMMENDED FUEL/ LU-
BRICANTS” in the “9. Technical and consumer
information” section for drain and refill capacity.
The drain and refill capacity depends on the oil
temperature and drain time. Use these specifica-
tions for reference only. Always use the dipstick
to determine the proper amount of oil in the
engine.
10. Start the engine and check for leakage around the drain plug and the oil filter.
Correct as required.
SDI2528
8-10Maintenance and do-it-yourself

11. Turn the engine off and wait more than 15minutes. Check the oil level with the
dipstick. Add engine oil if necessary.
After the operation
1. Install the engine undercover into positionas the following steps.
a. Pull the center of the small plastic clip out.
b. Hold the engine undercover into position.
c. Insert the clip through the undercover into the hole in the frame, then push the
center of the clip in to lock the clip in
place.
d. Install the other bolts that hold the un- dercover in place. Be careful not to strip
the bolts or over-tighten them.
2. Lower the vehicle carefully to the ground.
3. Dispose of waste oil and filter properly.
WARNING
●Prolonged and repeated contact with used
engine oil may cause skin cancer.
● Try to avoid direct skin contact with used oil.
If skin contact is made, wash thoroughly
with soap or hand cleaner as soon as
possible.
● Keep used engine oil out of reach of children. Contact an INFINITI retailer if replacement is
required.
CAUTION
●
Use only Genuine NISSAN Matic S ATF. Do
not mix with other fluids.
● Using automatic transmission fluid other
than Genuine NISSAN Matic S ATF will cause
deterioration in driveability and automatic
transmission durability, and may damage
the automatic transmission, which is not
covered by the INFINITI new vehicle limited
warranty.
AUTOMATIC TRANSMISSION FLUID
Maintenance and do-it-yourself8-11

Check the fluid level in the reservoir.
The fluid level should be checked using the HOT
range (
1: HOT MAX.,2: HOT MIN.) at fluid
temperatures of 122 to 176°F (50 to 80°C) or
using the COLD range (
3: COLD MAX.,4:
COLD MIN.) at fluid temperatures of 32 to 86°F
(0 to 30°C).
If the fluid is below the MIN line, add Genuine
NISSAN PSF or equivalent. Remove the cap and
fill through the opening.
CAUTION
● Do not overfill.
● Use Genuine NISSAN PSF or equivalent. For further brake fluid specification information,
see “CAPACITIES AND RECOMMENDED FUEL/
LUBRICANTS” in the “9. Technical and con-
sumer information” section of this manual.
WARNING
●
Use only new fluid from a sealed container.
Old, inferior or contaminated fluid may dam-
age the brake system. The use of improper
fluids can damage the brake system and af-
fect the vehicle’s stopping ability.
● Be sure to clean the filler cap before
removing.
● Brake fluid is poisonous and should be
stored carefully in marked containers out of
the reach of children.
SDI1765A
POWER STEERING FLUID BRAKE FLUID
8-12Maintenance and do-it-yourself

CAUTION
●Do not add brake fluid with the ignition
switch in the “ON” position or the engine
running. Doing so could make the brake fluid
overfill when the ignition switch is turned
off.
● Do not spill the fluid on painted surfaces.
This will damage the paint. If fluid is spilled,
wash the surface with water.
BRAKE FLUID
Check the fluid level in the reservoir. If the fluid
is below the MIN line
1or the brake warning
light comes on, add Genuine NISSAN Super
Heavy Duty Brake Fluid or equivalent DOT 3fluid
up to the MAX line
2.
To add brake fluid:
1. Be sure the ignition switch is in the OFF or LOCK position.
2. Depress and release the foot brake pedal more than 40 times. 3. Open the reservoir filler cap and add
brake fluid up to the MAX line
2. (See
“CAPACITIES AND RECOMMENDED FUEL/
LUBRICANTS” in the “9. Technical and
consumer information” section for the
recommended types of brake fluid.)
NOTE:
When the ignition switch is placed in the “ON”
position after adding brake fluid up to the MAX
line
2in the reservoir, the brake fluid de-
creases below the MAX line
2. This is normal.
If fluid must be added frequently, the system
should be checked by an INFINITI retailer.SDI2513
Maintenance and do-it-yourself8-13