brake INFINITI G35 2003 Owner's Guide

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
8-2 Do-it-yourself
Z 02.7.29/V35-D/V5.0
X

1. Fuse/fusible link holder
2. Battery
3. Engine oil filler cap
4. Brake fluid reservoir
5. Clutch fluid reservoir
6. Power steering fluid reservoir
7. Engine coolant reservoir
8. Windshield washer fluid reservoir
9. Radiator filler cap
10. Engine oil dipstick
11. Air cleaner
SDI1485ENGINE COMPARTMENT CHECK
LOCATIONS
8-4 Do-it-yourself
Z 02.7.29/V35-D/V5.0
X

CHECKING ENGINE OIL LEVEL 1. Park the vehicle on a level surface and
apply parking brake.
2. Run the engine until it reaches operating
temperature.
3. Turn off the engine. Wait more than 10
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 between the H and L
marks. If the oil level is below the L mark,
remove the oil filler cap and pour recom-
mended oil through the opening. Do not
overfill.
6. Recheck oil level with dipstick.
It is normal to add some oil between oil
maintenance intervals or during the
break-in period, depending on the severity
of operating conditions. CAUTION Oil level should be checked regularly.
Operating with insufficient amount of oil
can damage the engine, and such dam-
age is not covered by warranty.SDI1386 SDI1402
ENGINE OIL
Do-it-yourself
8-7
Z 02.7.29/V35-D/V5.0
X

CHANGING ENGINE OIL AND
FILTER Change the engine oil and filter according to
the maintenance intervals shown in the ª9.
Maintenanceº section.
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 10
minutes.
4. Raise and support the vehicle using a suit-
able floor jack and safety jack stands.
O Place the safety jack stands under the
vehicle jack-up points.
O A suitable adapter should be attached to
the jack stand saddle.
5. Remove the plastic engine undercover.
a. Remove the small plastic clip at the center
point of the undercover.
b. Then remove the other bolts that hold the
undercover in place. CAUTION Make sure the correct lifting and support
points are used to avoid vehicle dam-
age.
Engine oil and filter 1. Place a large drain pan under the drain
plug.
2. Remove the oil filler cap.
3. Remove the drain plug with a wrench and
completely drain the oil.
CAUTION Be careful not to burn yourself, as the
engine oil is hot.
O Waste oil must be disposed of properly. SDI1520
8-8 Do-it-yourself
Z 02.7.29/V35-D/V5.0
X

BRAKE FLUID Check the fluid level in the reservoir. If the fluid
is below the MIN line or the brake warning light
comes on, add DOT 3 fluid up to the MAX line.
If fluid must be added frequently, the system
should be thoroughly checked by your
INFINITI retailer.
WARNINGUse only new fluid. Old, inferior, or con-
taminated fluid may damage the brake system. Do not add synthetic brake
fluid. The use of improper fluids can
damage the brake system and affect the
vehicle's stopping ability.
CAUTION Do not spill the fluid on painted sur-
faces. This will damage the paint. If fluid
is spilled, wash with water.
CLUTCH FLUID Check the fluid level in the reservoir. If the fluid
level is below the MIN. line, add Genuine
Nissan Brake Fluid or equivalent DOT 3 fluid
up to the MAX. line.
If fluid is added frequently, the system should
be thoroughly checked by your INFINITI re-
tailer.SDI0847 SDI1478
BRAKE AND CLUTCH FLUID
Do-it-yourself
8-11
Z 02.7.29/V35-D/V5.0
X

unexpectedly.
1. Visually inspect each belt for signs of un-
usual wear, cuts, fraying, oil adhesion or
looseness. If the belt is in poor condition or
loose, have it replaced or adjusted by your
INFINITI retailer.
2. Have the belts checked regularly for condi-
tion and tension in accordance with the
maintenance schedule in this manual.
WARNING Be sure the engine and ignition switch
are off and that the parking brake is
engaged securely.
CAUTION Be sure to use the correct socket to
remove the spark plugs. An incorrect
socket can damage the spark plugs.
REPLACING SPARK PLUGS If replacement is required, see your INFINITI
retailer for servicing.
Platinum-tipped spark plugs It is not necessary to replace the platinum-
tipped spark plugs as frequently as the con-
ventional type spark plugs since they will last
much longer. Follow the maintenance sched-
ule but, do not reuse them by cleaning or
regapping.
Always replace with recommended
platinum-tipped spark plugs. SDI0145
SPARK PLUGS
Do-it-yourself
8-15
Z 02.7.29/V35-D/V5.0
X

CHECKING PARKING BRAKE
Pedal type From the released position, depress the park-
ing brake pedal slowly and firmly, and check
the distance between the initial and final posi-
tion of the pedal. If it is out of the range shown
above, see your INFINITI retailer.
Lever type From the released position, pull the parking
brake lever up slowly and firmly. If the number
of clicks is out of the range listed above, see
your INFINITI retailer.
CHECKING BRAKE PEDAL With the engine running, check the distance
between the upper surface of the pedal and
the metal floor. If it is out of the range shown
above, see your INFINITI retailer.
Self-adjusting brakes Your vehicle is equipped with self-adjusting
brakes.
The disc-type brakes self-adjust every time the
brake pedal is applied.SDI1391 SDI1447 DI1020MK
PARKING BRAKE AND BRAKE
PEDAL
8-18 Do-it-yourself
Z 02.7.29/V35-D/V5.0
X

WARNINGSee your INFINITI retailer and have it
checked if the brake pedal height does
not return to normal.
Brake pad wear indicators The disc brake pads on your vehicle have
audible wear indicators. When a brake pad
requires replacement, it will make a high
pitched scraping or screeching sound when
the vehicle is in motion whether or not the
brake pedal is depressed. Have the brakes
checked as soon as possible if the wear indi-
cator sound is heard.
Under some driving or climate conditions, oc-
casional 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
ªPeriodic maintenance schedulesº in the ª9.
Maintenanceº section for maintenance inter-
vals. High performance sports brake pad occasion-
ally makes squeak, squeal or other braking
noise because of its very high friction coeffi-
cient.
These occasional brake noise is normal, but if
it continues, see your INFINITI retailer.
BRAKE BOOSTER Check the brake booster function as follows:
1. With the engine off, press and release the
brake pedal several times. When brake
pedal movement (distance of travel) re-
mains the same from one pedal application
to the next, continue on to the next step.
2. While depressing the brake pedal, start the
engine. The pedal height should drop a
little.
3. With the brake pedal depressed, stop the
engine. Keeping the pedal depressed for
about 30 seconds, the pedal height should
not change.
4. Run the engine for one minute without
depressing the brake pedal, then turn it off.
Depress the brake pedal several times. The
pedal travel distance will decrease gradu-
ally with each depression as the vacuum is
released from the booster. If the brakes do not operate properly, see your
INFINITI retailer.
Do-it-yourself
8-19
Z 02.7.29/V35-D/V5.0
X

CHANGING WHEELS AND TIRES
Tire rotation (Sedan) INFINITI recommends that tires be rotated
every 7,500 miles (12,000 km).
Wheel nut tightening torque:
80 ft-lb (108 N z m)
See ªFlat tireº in the ª6. In case of emergencyº
section for tire replacing procedures.
Tire rotation (Coupe) Tires cannot be rotated in this vehicle, as front
tires are different size from rear tires and the
direction of wheel rotation is fixed in each tire. A pin is on the front brake rotor to prevent the
rear wheels from being installed in place of the
front wheels. The spare tire can be installed in
place of the front and rear wheels. When
installing the spare tire in the front wheel, the
hole in the spare tire wheel must be aligned
with the pin on the brake rotor.
WARNING O After rotating the tires, adjust the tire
pressure.
O Retighten the wheel nuts when the
vehicle has been driven for 600 miles
(1,000 km) (also in cases of a flat tire,
etc.).
O Do not include the T-type spare tire or
any other small size spare tire in the
tire rotation.
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. Tire wear and damage
WARNING O Tires should be periodically in-
spected for wear, cracking, bulging,
or objects caught in the tread. If ex-
cessive wear, cracks, bulging, or
deep cuts are found, the tire should
be replaced.
O The original tires have a built-in tread
wear indicator. When the wear indica-DI0048-C MDI0004
8-32 Do-it-yourself
Z 02.11.1/V35-D/V5.0
X

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
8-33
Z 02.7.29/V35-D/V5.0
X