2003 INFINITI G35 service

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
general precautions which should be closely
observed.
WARNINGO Park the vehicle on a level surface,
apply the parking brake securely and
block the wheels to prevent the ve-
hicle from moving. For a manual
transmission, move the shift lever to
N (Neutral) position. For an automatic
transmission, move the selector lever
to P (Park) position.
O Be sure the ignition key is OFF or
LOCK when performing any parts re-
placement or repairs.
O 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.
O It is advised to secure or remove any loose clothing and any jewelry, such
as rings, watches, etc. before work-
ing on your vehicle.
O Always wear eye protection when-
ever you work on your vehicle.
O 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.
O Never get under the vehicle while it is
supported only by a jack. If it is nec-
essary to work under the vehicle,
support it with safety stands.
O Keep smoking materials, flame and
sparks away from fuel and the bat-
tery.
O On gasoline engine models with the
Multiport Fuel Injection (MFI) System,
the fuel filter or fuel lines should be
serviced by an INFINITI retailer be-
cause the fuel lines are under high
pressure even when the engine is off. CAUTION O Do not work under the hood while the
engine is hot. Turn off the engine and
wait until it cools down.
O Never connect or disconnect either
the battery or any transistorized com-
ponent connector while the ignition
key is on.
O Never leave any engine or automatic
transmission related component har-
ness connector disconnected while
the ignition key is on.
O Avoid direct contact with used engine
oil and coolant. Improperly disposed
engine oil, engine coolant and/or
other vehicle fluids can hurt the envi-
ronment. Always conform to local
regulations for disposal of vehicle
fluid.
This ª8. Do-it-yourselfº section gives instruc-
tions regarding only those items which are
relatively easy for an owner to perform.
A genuine INFINITI Service Manual is alsoMAINTENANCE PRECAUTIONS
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available. See ªOwner's Manual/Service
Manual order informationº in the ª10. Technical
and consumer informationº section.
You should be aware that incomplete or im-
proper servicing may result in operating diffi-
culties or excessive emissions, and could af-
fect your warranty coverage. If in doubt about
any servicing, have it done by your INFINITI
retailer.
Do-it-yourself
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CHANGING ENGINE COOLANT O Major cooling system repairs should be
performed by your INFINITI retailer. The
service procedures can be found in the
appropriate INFINITI Service Manual. O Improper servicing can result in reduced
heater performance and engine overheat-
ing.
WARNING O To avoid being scalded, never change
the coolant when the engine is hot.
O Never remove the radiator cap when
the engine is hot. Serious burns
could be caused by high pressure
fluid escaping from the radiator.
O Avoid direct skin contact with used
coolant. If skin contact is made, wash
thoroughly with soap or hand cleaner
as soon as possible.
O Keep coolant out of reach of children
and pets.
1. Open radiator drain plug at the bottom of
radiator, and remove radiator filler cap.
O Be careful not to allow coolant to con-
tact drive belts.
O Waste coolant must be disposed of
properly. Check your local regulations.
2. Close the radiator drain plug securely after
the coolant is drained. 3. Fill the radiator slowly with the proper mix-
ture of anti-freeze solution and demineral-
ized water/distilled water. Fill the reservoir
tank up to the MAX level. Then install the
radiator filler cap.
4. Start the engine and warm it up until it
reaches normal operating temperature.
Then race the engine 2 or 3 times under no
load. Watch the engine coolant tempera-
ture gauge for signs of overheating.
5. Stop the engine. After it completely cools
down, refill the radiator up to the filler
opening. Fill the reservoir tank up to the
MAX level. Check the drain plug for any
sign of leakage.
6. Recheck the coolant level after the vehicle
has been driven for a day.SDI0114
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tor is visible, the tire should be re-
placed.
O Improper service for a spare tire may
result in serious personal injury. If it
is necessary to repair the spare tire,
contact your INFINITI retailer.
O For additional information regarding
tires, refer to ªImportant Tire Safety
Informationº (US) or ªTire Safety In-
formationº (Canada) in the INFINITI
Warranty Information Booklet.
Replacing wheels and tires When replacing a tire, use the same size,
speed rating and load carrying capacity as
originally equipped. See ªSpecificationsº in the
ª10. Technical and consumer informationº sec-
tion for recommended types and sizes of tires
and wheels.
WARNINGO The use of tires other than those
recommended or the mixed use of tires of different brands, construction
(bias, bias-belted or radial), or tread
patterns can adversely affect the ride,
braking, handling, ground clearance,
body-to-tire clearance, tire chain
clearance, speedometer calibration,
headlight aim and bumper height.
Some of these effects may lead to
accidents and could result in serious
personal injury.
O If the wheels are changed for any
reason, always replace with wheels
which have the same offset dimen-
sion. Wheels of a different offset
could cause early tire wear, possibly
degraded vehicle handling character-
istics and/or interference with the
brake discs. Such interference can
lead to decreased braking efficiency
and/or early brake pad wear.
O Do not install a deformed wheel or
tire even if it has been repaired. Such
wheels or tires could have structural
damage and could fail without
warning. O The use of retread tires is not recom-
mended.
O For additional information regarding
tires, refer to ªImportant Tire Safety
Informationº (US) or ªTire Safety In-
formationº (Canada) in the INFINITI
Warranty Information Booklet.
Wheel balance Unbalanced wheels may affect vehicle han-
dling and tire life. Even with regular use,
wheels can get out of balance. Therefore, they
should be balanced as required.
Wheel balance service should be performed
with the wheels off the vehicle. Spin balancing
the rear wheels on the vehicle could lead to
transmission damage.
For additional information regarding tires, refer
to ªImportant Tire Safety Informationº (US) or
ªTire Safety Informationº (Canada) in the
INFINITI Warranty Information Booklet.
Care of wheels O Wash the wheels when washing the vehicle
to maintain their appearance.
O Clean the inner side of the wheels when the Do-it-yourself
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Your new INFINITI has been designed to have
minimum maintenance requirements with
longer service intervals to save you both time
and money. However, some day-to-day and
regular maintenance is essential to maintain
your INFINITI's good mechanical condition, as
well as its emission and engine performance.
It is the owner's responsibility to make sure
that the specified 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.
General maintenance:
General maintenance includes those items
which should be checked during normal
day-to-day operation of the vehicle. They are
essential if your vehicle is to continue to
operate properly. It is your responsibility to
perform these procedures regularly as
prescribed.
These checks or inspections can be done by
yourself, a qualified technician or, if you prefer,
your INFINITI retailer.
Periodic maintenance:
The maintenance items listed in this part are required to be serviced at regular intervals.
However, under severe driving conditions, ad-
ditional or more frequent maintenance will be
required.
Where to go for service:
If maintenance service is required or your
vehicle appears to malfunction, have the sys-
tems checked and serviced by an authorized
INFINITI retailer.
INFINITI technicians are well-trained special-
ists and are kept up to date with the latest
service information through technical bulletins,
service tips, and in-dealership information sys-
tems. They are completely qualified to work on
INFINITI vehicles before work begins.
You can be confident that your INFINITI
retailer's service department performs the
best job to meet the maintenance
requirements on your vehicle Ð in a reliable
and economic way. During the normal day-to-day operation of the
vehicle, general maintenance should be per-
formed regularly as prescribed in this section.
If you detect any unusual sounds, vibrations or
smell, be sure to check for the cause or have
your INFINITI retailer do it promptly. In addi-
tion, you should notify your INFINITI retailer if
you think that repairs are required.
When performing any checks or maintenance
work, see ªMaintenance precautionsº in the ª8.
Do-it-yourselfº section.GENERAL MAINTENANCE
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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 corrected immediately. To ensure smooth, trouble-free, safe and eco-
nomical driving, INFINITI provides two differ-
ent maintenance schedules that may be used,
depending upon the conditions in which you
usually drive. These schedules contain both
distance and time intervals, up to 60,000 miles
(96,000 km)/48 months. For most people, the
odometer reading will indicate when service is
needed. However, if you drive very little, your
vehicle should be serviced at the regular time
intervals shown in the schedule. After 60,000
miles (96,000 km) or 48 months, continue
periodic maintenance at the same
mileage/time intervals.
SCHEDULE 1 Follow Periodic Maintenance Schedule 1 if
your driving habits frequently include one or
more of the following driving conditions:
O repeated short trips of less than 5 miles
(8 km).
O repeated short trips of less than 10 miles
(16 km) with outside temperatures re-
maining below freezing.
O operating in hot weather in stop-and-go
rush hour traffic.
O extensive idling and/or low speed driv-
ing for long distances, such as police,
taxi or door-to-door delivery use. O driving in dusty conditions.
O driving on rough, muddy, or salt spread
roads.
O towing a trailer, using a camper or a
car-top carrier.
SCHEDULE 2 Follow Periodic Maintenance Schedule 2 if
none of the driving conditions shown in Sched-
ule 1 apply to your driving habits.PERIODIC MAINTENANCE
SCHEDULES
Maintenance
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Schedule 1 Abbreviations: R = Replace, I = Inspect. Correct or replace if necessary. [ ]: Perform service at the mileage intervals onlyMAINTENANCE OPERATION MAINTENANCE INTERVAL
Perform at number of miles, kilometers or
months, whichever comes first. Miles x 1,000 3.75 7.5 11.25 15 18.75 22.5 26.25 30 33.75 37.5 41.25 45 48.75 52.5 56.25 60
(km x 1,000) (6) (12) (18) (24) (30) (36) (42) (48) (54) (60) (66) (72) (78) (84) (90) (96)
Months 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48
EMISSION CONTROL SYSTEM MAINTENANCE
Engine oil RRRRRRRRRRRRRRRR
Engine oil filter (Use Part No. 15208 31U00 or 15208 65F00 or
equivalent) RRRRRRRRRRRRRRRR
Air cleaner filter See NOTE (1) [R] [R]
EVAP vapor lines I* I*
Fuel lines I* I*
Drive belts See NOTE (2) I*
Engine coolant See NOTE (3) R*
Spark plugs (PLATINUM-TIPPED type) Replace every 105,000 miles (169,000 km)
Fuel filter See NOTE (4)
Intake & exhaust valve clearance* See NOTE (5)
NOTE: (1) If operating mainly in dusty conditions, more frequent maintenance may be required.
(2) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months. Replace the drive belts if found damaged.
(3) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(4) Maintenance-free item (In-tank type fuel filter).
(5) If valve noise increases, inspect valve clearance.
* Maintenance items and intervals with ª*º 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.
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Schedule 2 Abbreviations: R = Replace, I = Inspect. Correct or replace if necessary. [ ]: Perform service at the mileage intervals onlyMAINTENANCE OPERATION MAINTENANCE INTERVAL
Perform at number of miles, kilometers or months,
whichever comes first. Miles x 1,000 7.5 15 22.5 30 37.5 45 52.5 60
(km x 1,000) (12) (24) (36) (48) (60) (72) (84) (96)
Months 6 12 18 24 30 36 42 48
EMISSION CONTROL SYSTEM MAINTENANCE
Engine oil RRRRRRRR
Engine oil filter (Use Part No. 15208 31U00 or 15208 65F00 or equivalent) RRRRRRRR
Air cleaner filter [R] [R]
EVAP vapor lines I* I*
Fuel lines I* I*
Drive belts See NOTE (1) I*
Engine coolant See NOTE (2) R*
Spark plugs (PLATINUM-TIPPED Type) Replace every 105,000 miles (169,000 km)
Fuel filter See NOTE (3)
Intake & exhaust valve clearance* See NOTE (4)
NOTE: (1) After 60,000 miles (96,000 km) or 48 months, inspect every 15,000 miles (24,000 km) or 12 months. Replace the drive belts if found damaged.
(2) After 60,000 miles (96,000 km) or 48 months, replace every 30,000 miles (48,000 km) or 24 months.
(3) Maintenance-free item (In-tank type fuel filter).
(4) If valve noise increases, inspect valve clearance.
* Maintenance items and intervals with ª*º 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.
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