2004 SUBARU LEGACY service

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11
Maintenance and service
Ma inte nan ce sche du le .. ... ... ... .. ... ... ... ... .. ... ... 11-3
Ma in te nan ce precau tio ns ... ... .. ... ... ... ... .. ... ... 11-3
B ef ore checki ng o r servicing in th e e ngi ne
c o m part ment ..... ..................... ..................... ... 11-4
W hen y ou do c h ecking or servic ing in t h e
e ngi ne c omp artme nt while the engi ne is
r u nn ing ............... ..................... ..................... ... 11-5
En gine ho od .. ... ... ... .. ... ... ... ... ... .. ... ... ... ... .. ... ... 11-5
Engine compartment overview ................... 11-8 2.5 liter models .................................................. 11-8
2.5 liter CALIFORNIA spec models ................. 11-9
3.0 liter models .................................................. 11-10
Engine oil ...................................................... 11-11 Checking the oil level ....................................... 11-11
Changing the oil and oil filter .......................... 11-12
Recommended grade and viscosity ................ 11-15
Recommended grade and viscosity under severe driving conditions .............................. 11-16
Cooling system ............................................. 11-17 Hose and connections ...................................... 11-18
Engine coolant .................................................. 11-18
Air cleaner element ...................................... 11-22 Replacing the air cleaner element ................... 11-22
Spark plugs ................................................... 11-25 Recommended spark plugs ............................. 11-25
Drive belts ..................................................... 11-26 2.5 liter models .................................................. 11-26
3.0 liter models .................................................. 11-26
Manual transmission oil ............................... 11-27 Checking the oil level ....................................... 11-27 Recommended grade and viscosity ............... 11-27
Automatic transmission fluid ...................... 11-28 Checking the fluid level .................................... 11-28
Recommended fluid ......................................... 11-30
Front differential gear oil (AT vehicles) ...... 11-30 Checking the oil level ....................................... 11-30
Recommended grade and viscosity ............... 11-31
Rear differential gear oil ............................... 11-32 Checking the gear oil level .............................. 11-32
Recommended grade and viscosity ............... 11-34
Power steering fluid ...................................... 11-35 Checking the fluid level .................................... 11-35
Recommended fluid ......................................... 11-36
Brake fluid ..................................................... 11-36 Checking the fluid level .................................... 11-36
Recommended brake fluid ............................... 11-37
Clutch fluid (MT vehicles) ............................ 11-38 Checking the fluid level .................................... 11-38
Recommended clutch fluid .............................. 11-38
Brake booster ................................................ 11-39
Brake pedal .................................................... 11-39 Checking the brake pedal free play ................ 11-39
Checking the brake pedal reserve distance ... 11-40
Clutch pedal (Manual transmission vehicles) ............... 11-40Checking the clutch function .......................... 11-40
Checking the clutch pedal free play ............... 11-41
Replacement of brake pad and lining ......... 11-41 Breaking-in of new brake pads and linings .... 11-42

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Maintenance and service
Parking brake stroke .................................... 11-43
Tires and wheels .......................................... 11-43Types of tires .................................................... 11-43
Tire inspection .................................................. 11-44
Tire pressures and wear .................................. 11-44
Wheel balance ................................................... 11-47
Wear indicators ................................................. 11-47
Tire rotation ....................................................... 11-48
Tire replacement ............................................... 11-48
Wheel replacement ........................................... 11-49
Wheel covers .................................................... 11-50
Aluminum wheels (if equipped) .................. 11-51
Windshield washer fluid .............................. 11-51
Replacement of wiper blades ...................... 11-52 Replacement wiper blade assembly ............... 11-53
Replacement wiper blade rubber .................... 11-53
Battery ........................................................... 11-58
Fuses ............................................................. 11-59
Main fuse ....................................................... 11-61
Installation of accessories .......................... 11-62
Replacing bulbs ............................................ 11-63 Headlight ........................................................... 11-65
Front fog light (if equipped) ............................. 11-69
Front turn signal light, parking light and side marker light .................................................... 11-69
Rear combination lights ................................... 11-71
License plate light ............................................ 11-76
Map light, dome light, luggage compartment light and door step light ................................ 11-76
Trunk light ......................................................... 11-79
High mount stop light ...................................... 11-79

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2Maintenance and service
– CONTINUED –
2Maintenance and serviceMaintenance schedule
The scheduled maintenance items required to be ser-
viced at regular intervals are shown in the “Warranty
and Maintenance Booklet”.
For details of your maintenance schedule, read the
separate “Warranty and Maintenance Booklet”.Maintenance precautions
When maintenance and service are required, it is rec-
ommended that all work be done by an authorized
SUBARU dealer.
If you perform maintenance and service by yourself,
you should familiarize yourself with the information
provided in this section on general maintenance and
service for your SUBARU.
Incorrect or incomplete service could cause improper
or unsafe vehicle operation. Any problems caused by
improper maintenance and service performed by you
are not eligible for warranty coverage.
yTesting of an All-Wheel Drive vehicle must
NEVER be performed on a single two-wheel dy-
namometer or similar apparatus. Attempting to
do so will result in transmission damage and in
uncontrolled vehicle movement and may cause
an accident or injuries to persons nearby.y Always select a safe area when performing
maintenance on your vehicle.y Always be very careful to avoid injury when
working on the vehicle. Remember that some of

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2Maintenance and service
the materials in the vehicle may be hazardous if
improperly used or handled, for example, bat-tery acid. y
Your vehicle should only be serviced by per-
sons fully competent to do so. Serious person-
al injury may result to persons not experienced
in servicing vehicles. y Always use the proper tools and make certain
that they are well maintained. y Never get under the vehicle supported only
by a jack. Always use a safety stands to sup-
port the vehicle. y Never keep the engine running in a poorly
ventilated area, such as a garage or other
closed areas. y Do not smoke or allow open flames around
the fuel or battery. This will cause a fire. y Because the fuel system is under pressure,
replacement of the fuel filter should be per-
formed only by your SUBARU dealer.y Wear adequate eye protection to guard
against getting oil or fluids in your eyes. If
something does get in your eyes, thoroughly
wash them out with clean water. y Do not tamper with the wiring of the SRS air-
bag system or seatbelt pretensioner system, or
attempt to take its connectors apart, as that may activate the system or it can render it inop-
erative. The wiring and connectors of these
systems are yellow for easy identification. NEV-
ER use a circuit tester for these wiring.
If your SRS airbag or seatbelt pretensioner
needs service, consult your nearest SUBARU
dealer.
„ Before checking or servicing in the en-
gine compartment
yAlways stop the engine and set the parking
brake firmly to prevent the vehicle from mov-
ing. y Always let the engine cool down. Engine
parts become very hot when the engine is run-
ning and remain hot for some time after the en-
gine is stopped.y Do not spill engine oil, engine coolant, brake
fluid or any other fluid on hot engine compo-
nents. This may cause a fire.y Always remove the key from the ignition
switch. When the ignition switch is in the “ON”
position, the cooling fan may operate suddenly

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2Maintenance and service
– CONTINUED –
even when the engine is stopped.
„ When you do checking or servicing in
the engine compartment while the en-
gine is running
A running engine can be dangerous. Keep your
fingers, hands, clothing, hair and tools away
from the cooling fan, belts and any other mov-
ing engine parts. Removing rings, watches and
ties is advisable.
Engine hood
To open the hood:
1. If the wiper blades are lifted off the windshield, re-
turn them to their original positions.
2. Pull the hood release knob under the instrument
panel.
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2Maintenance and service
3. Release the secondary hood release located under
the front grille by moving the lever toward the left.
4. Lift up the hood, release the hood prop from its re-
tainer and put the end of the hood prop into the slot in
the hood.
To close the hood:
1. Lift the hood slightly and remove the hood prop
from the slot in the hood and return the prop to its re-
tainer.
2. Lower the hood until it approaches about 6 in (15
cm) from the closed position and let it drop.
3. After closing the hood, be sure the hood is securely
locked.
If this does not close the hood, release it from a slightly
higher position. Do not push the hood forcibly to close
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2Maintenance and service
– CONTINUED –
it. It could deform the metal.
Always check that the hood is properly locked
before you start driving. If it is not, it might fly
open while the vehicle is moving and block
your view, which may cause an accident and
serious bodily injury.

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2Maintenance and service
Engine compartment overview „
2.5 liter models
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1) Manual transmission oil level
gauge (MT) (page 11-27) or Dif-
ferential gear oil level gauge
(AT) (page 11-30)
2) Air cleaner element (page 11- 22)
3) Clutch fluid reservoir (page 11-
38)
4) Automatic transmission fluid lev- el gauge (page 11-28)
5) Brake fluid reservoir (page 11- 36)
6) Fuel filter
7) Windshield washer tank (page 11-51)
8) Fuse box (page 11-59)
9) Battery (page 11-58)
10) Engine oil filler cap (page 11-11)
11) Engine coolant reservoir (page
11-18)
12) Radiator cap (page 11-18)
13) Engine oil level gauge (page 11-
11)
14) Power steering fluid reservoir (page 11-35)