
QG18DE engine
1. Engine oil filler cap (P. 8-11)
2. Spark plug caps/ignition coils (P. 8-22)
3. Brake fluid reservoir (P. 8-18)
4. Clutch fluid reservoir (M/T model)
(P. 8-18)
5. Air cleaner (P. 8-23)
6. Battery (P. 8-19)
7. Fuse/Fusible link box (P. 8-30)
8. Radiator cap (P. 8-8)
9. Engine oil dipstick (P. 8-11)
10. Windshield washer fluid reservoir
(P. 8-19)
11. Engine coolant reservoir (P. 8-8)
12. Power steering fluid reservoir (P. 8-17)
WDI0024
ENGINE COMPARTMENT LOCATIONS
Illustrated table of contents0-7
ZREVIEW COPY:Ð2004 Sentra(b15)
Owners Manual(owners)ÐUSA English(nna)
03/18/04Ðtbrooks
X 

QR25DE engine
1. Engine oil filler cap (P. 8-11)
2. Spark plug caps (P. 8-22)
3. Brake fluid reservoir (P. 8-18)
4. Clutch fluid reservoir (M/T model)
(P. 8-18)
5. Air cleaner (P. 8-23)
6. Battery (P. 8-19)
7. Fuel/Fusible link box (P. 8-30)
8. Radiator cap (P. 8-8)
9. Engine oil dipstick (P. 8-11)
10. Windshield washer fluid reservoir
(P. 8-19)
11. Engine coolant reservoir (P. 8-8)
12. Power steering fluid reservoir (P. 8-17)
See the page number indicated in paren-
theses for operating details.
LDI0108
0-8Illustrated table of contents
ZREVIEW COPY:Ð2004 Sentra(b15)
Owners Manual(owners)ÐUSA English(nna)
03/18/04Ðtbrooks
X 

OPENER OPERATION
The fuel filler opener lever is located on the out-
side of the driver’s seat
s1. To open the fuel filler
lid, pull the opener lever up. To lock, close the fuel
filler lid securely.
FUEL FILLER CAP
The fuel filler cap is a ratcheting type. Turn the
cap counterclockwise to remove. To tighten, turn
the cap clockwise until ratcheting clicks are
heard.
Put the fuel filler cap on the cap holder
s1while
refueling.
WARNING
cGasoline is extremely flammable and
highly explosive under certain condi-
tions. You could be burned or seriously
injured if it is misused or mishandled.
Always stop the engine and do not
smoke or allow open flames or sparks
near the vehicle when refueling.
cFuel may be under pressure. Turn the
cap a third of a turn, and wait for any
“hissing” sound to stop to prevent fuel
from spraying out and possibly causing
personal injury. Then remove the cap.
cDo not attempt to top off the fuel tank
after the fuel pump nozzle shuts off
automatically. Continued refueling may
cause fuel overflow, resulting in fuel
spray and possibly a fire.
cUse only an original equipment type
fuel filler cap as a replacement. It has a
built-in safety valve needed for proper
operation of the fuel system and emis-
sion control system. An incorrect cap
can result in a serious malfunction and
possible injury. It could also cause the
malfunction indicator lamp to come on.
cNever pour fuel into the throttle body to
attempt to start your vehicle.
WPD0121WPD0228
FUEL FILLER LID
3-14Pre-driving checks and adjustments
ZREVIEW COPY:Ð2004 Sentra(b15)
Owners Manual(owners)ÐUSA English(nna)
03/18/04Ðtbrooks
X 

6. Install the jack in its storage area and tighten
the jack screw clockwise.
7. Place the spare tire cover and the trunk floor
carpeting over the damaged tire.
8. Close the trunk.
WARNING
cAlways make sure that the spare tire
and jacking equipment are properly se-
cured after use. Such items can become
dangerous projectiles in an accident or
sudden stop.cThe spare tire is designed for emer-
gency use. See specific instructions un-
der the heading “Wheels and tires” in
the “Maintenance and do-it-yourself”
section of this manual.To start your engine with a booster battery, the
instructions and precautions below must be fol-
lowed.
WARNING
cIf done incorrectly, jump starting can
lead to a battery explosion, resulting in
severe injury or death. It could also
damage your vehicle.
cExplosive hydrogen gas is always
present in the vicinity of the battery.
Keep all sparks and flames away from
the battery.
cDo not allow battery fluid to come into
contact with eyes, skin, clothing or
painted surfaces. Battery fluid is a cor-
rosive sulfuric acid solution which can
cause severe burns. If the fluid should
come into contact with anything, imme-
diately flush the contacted area with
water.
cKeep battery out of the reach of
children.
cThe booster battery must be rated at 12
volts. Use of an improperly rated battery
can damage your vehicle.
WCE0049
JUMP STARTING
In case of emergency6-7
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X 

8 Maintenance and do-it-yourself
Maintenance requirements..........................8-2
General maintenance..............................8-2
Explanation of general maintenance items.........8-2
Maintenance precautions...........................8-5
Engine compartment check locations................8-6
Engine cooling system.............................8-8
Checking engine coolant level...................8-8
Changing engine coolant........................8-9
Engine oil........................................8-11
Checking engine oil level.......................8-11
Changing engine oil...........................8-12
Changing engine oil filter.......................8-13
Automatic transmission fluid.......................8-14
Temperature conditions for checking.............8-15
Power steering fluid...............................8-17
Brake and clutch fluid.............................8-17
Brake fluid....................................8-18
Clutch fluid...................................8-18
Window washer fluid.............................8-19
Window washer fluid reservoir..................8-19
Battery..........................................8-19
Jump starting.................................8-21
Drive belts.......................................8-21
Spark plugs......................................8-22Replacing spark plugs.........................8-22
Air cleaner.......................................8-23
In-cabin Microfilter (if so equipped)..............8-24
Windshield wiper blades..........................8-27
Cleaning.....................................8-27
Replacing....................................8-27
Parking brake and brake pedal.....................8-28
Checking parking brake........................8-28
Checking brake pedal..........................8-28
Brake booster.................................8-29
Fuses...........................................8-30
Engine compartment...........................8-30
Passenger compartment.......................8-31
Battery replacement..............................8-32
Lights...........................................8-34
Headlights....................................8-34
Fog lights (if so equipped)......................8-35
Exterior and interior lights.......................8-36
Wheels and tires.................................8-39
Tire pressure..................................8-39
Tire labeling...................................8-42
Types of tires..................................8-45
Tire chains....................................8-45
Changing wheels and tires.....................8-46
ZREVIEW COPY:Ð2004 Sentra(b15)
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03/18/04Ðtbrooks
X 

When performing any inspection or maintenance
work on your vehicle, always take care to prevent
serious accidental injury to yourself or damage to
the vehicle. The following are general precau-
tions which should be closely observed.
WARNING
cPark the vehicle on a level surface, ap-
ply the parking brake securely and
block the wheels to prevent the vehicle
from moving. For manual transmission
models, move the shift lever to N (Neu-
tral) . For automatic transmission mod-
els, move the selector lever to P (Park) .
cBe sure the ignition key is in the OFF or
LOCK position when performing any
parts replacement or repairs.
cNever leave the engine or automatic
transmission related component har-
nesses disconnected while the ignition
switch is in the ON position.
cNever connect or disconnect the battery
or any transistorized component while
the ignition switch is in the ON position.
c
Your vehicle is equipped with an auto-
matic engine cooling fan. It may come on
at any time without warning, even if the
ignition key is in the OFF position and theengine is not running. To avoid injury,al-
ways disconnect the negative battery
cable before working near the fan.
cIf you must work with the engine run-
ning, keep your hands, clothing, hair
and tools away from moving fans, belts
and any other moving parts.
cIt is advisable to secure or remove any
loose clothing and remove any jewelry,
such as rings, watches, etc. before
working on your vehicle.
cAlways wear eye protection whenever
you work on your vehicle.
cIf you must run the engine in an en-
closed space such as a garage, be sure
there is proper ventilation for exhaust
gases to escape.
cNever get under the vehicle while it is
supported only by a jack. If it is neces-
sary to work under the vehicle, support
it with safety stands.
cKeep smoking materials, flame and
sparks away from the fuel tank and
battery.
cOn gasoline engine models with the
multiport fuel injection (MFI) system,
the fuel filter or fuel lines should beserviced by a NISSAN dealer because
the fuel lines are under high pressure
even when the engine is off.CAUTION
cDo not work under the hood while the
engine is hot. Turn the engine off and
wait until it cools down.
cAvoid contact with used engine oil and
coolant. Improperly disposed engine
oil, engine coolant and/or other vehicle
fluids can damage the environment. Al-
ways conform to local regulations for
disposal of vehicle fluid.
This “Maintenance and do-it-yourself” section
gives instructions regarding only those items
which are relatively easy for an owner to perform.
A genuine NISSAN service manual is also avail-
able. See “Owner’s Manual/Service Manual or-
der information” in the “Technical and consumer
information” section of this manual.
You should be aware that incomplete or improper
servicing may result in operating difficulties or
excessive emissions, and could affect warranty
coverage.If in doubt about any servicing,
have it done by a NISSAN dealer.
MAINTENANCE PRECAUTIONS
Maintenance and do-it-yourself8-5
ZREVIEW COPY:Ð2004 Sentra(b15)
Owners Manual(owners)ÐUSA English(nna)
03/18/04Ðtbrooks
X 

QG18DE engine
1. Engine oil filler cap
2. Spark plug caps/ignition coils
3. Brake fluid reservoir
4. Clutch fluid reservoir (M/T model)
5. Air cleaner
6. Battery
7. Fuse/Fusible link box
8. Radiator cap
9. Engine oil dipstick
10. Windshield washer fluid reservoir
11. Engine coolant reservoir
12. Power steering fluid reservoir
WDI0024
ENGINE COMPARTMENT CHECK
LOCATIONS
8-6Maintenance and do-it-yourself
ZREVIEW COPY:Ð2004 Sentra(b15)
Owners Manual(owners)ÐUSA English(nna)
03/18/04Ðtbrooks
X 

QR25DE engine
1. Engine oil filler cap
2. Spark plug caps
3. Brake fluid reservoir
4. Clutch fluid reservoir (M/T model)
5. Air cleaner
6. Battery
7. Fuse/Fusible link box
8. Radiator cap
9. Engine oil dipstick
10. Windshield washer fluid reservoir
11. Engine coolant reservoir
12. Power steering fluid reservoir
NOTE:
Engine cover removed for clarity.
LDI0108
Maintenance and do-it-yourself8-7
ZREVIEW COPY:Ð2004 Sentra(b15)
Owners Manual(owners)ÐUSA English(nna)
03/18/04Ðtbrooks
X