2004 SUBARU IMPREZA battery

11 - 4
Maintenance and service
the materials in the vehicle may be hazardous if
improperly used or handled, for example, bat- tery acid."
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. " Always use the proper tools and make certain
that they are well maintained. " Never get under the vehicle supported only
by a jack. Always use a safety stands to sup-
port the vehicle. " Never keep the engine running in a poorly
ventilated area, such as a garage or other
closed areas. " Do not smoke or allow open flames around
the fuel or battery. This will cause a fire. " Because the fuel system is under pressure,
replacement of the fuel filter should be per-
formed only by your SUBARU dealer. " 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. " 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
"Always stop the engine and set the parking
brake firmly to prevent the vehicle from mov-
ing. " 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. " Do not spill engine oil, engine coolant, brake
fluid or any other fluid on hot engine compo-
nents. This may cause a fire. " Always remove the key from the ignition
switch. When the ignition switch is in the “ON”
position, the cooling fan may operate suddenly

11 - 8
Maintenance and service
Engine compartment overview !
2.5 liter model
12 345 67
8
9
10
11
12
13
UGB505BB
1) Manual transmission oil level
gauge (MT) (page 11-28) or Dif-
ferential gear oil level gauge
(AT) (page 11-33)
2) Air cleaner element (page 11- 23)
3) Clutch fluid reservoir (page 11- 38)
4) Automatic transmission fluid lev-
el gauge (page 11-31)
5) Brake fluid reservoir (page 11-
37)
6) Windshield washer tank (page 11-54)
7) Fuse box (page 11-60)
8) Battery (page 11-58)
9) Engine oil filler cap (page 11-11)
10) Engine coolant reservoir (page 11-19)
11) Radiator cap (page 11-19)
12) Engine oil level gauge (page 11- 11)
13) Power steering fluid reservoir
(page 11-36)

11 - 9
Maintenance and service
– CONTINUED –
!2.0 liter (Turbo) model
34 5 6 7
1
2
13 12 11 10 9 8
HGB005CB
1) Manual transmission oil level gauge (MT) (page 11-28) or Dif-
ferential gear oil level gauge
(AT) (page 11-33)
2) Air cleaner element (page 11- 23)
3) Clutch fluid reservoir (page 11- 38)
4) Automatic transmission fluid lev-
el gauge (page 11-31)
5) Brake fluid reservoir (page 11-
37)
6) Windshield washer tank (page 11-54)
7) Fuse box (page 11-60)
8) Battery (page 11-58)
9) Engine oil filler cap (page 11-11)
10) Engine coolant reservoir (page 11-19)
11) Engine oil level gauge (page 11-
11)
12) Radiator cap (page 11-19)
13) Power steering fluid reservoir
(page 11-36)

11 - 1 0
Maintenance and service !
2.5 liter (Turbo) model
34 5 6
7
1
2
12 11 10 9 8
UGB070BB
1) Manual transmission oil level gauge (MT) (page 11-28)
2) Air cleaner element (page 11-
23)
3) Clutch fluid reservoir (page 11- 38)
4) Brake fluid reservoir (page 11- 37)
5) Windshield washer tank (page
11-54)
6) Fuse box (page 11-60)
7) Battery (page 11-58)
8) Engine oil filler cap (page 11-11)
9) Engine coolant reservoir (page
11-19)
10) Engine oil level gauge (page 11- 11)
11) Radiator cap (page 11-19)
12) Power steering fluid reservoir (page 11-36)

11 - 5 8
Maintenance and service
1) Stopper
Be sure to position the claws at the end of the metal
support between the stoppers on the rubber as shown.
If the rubber is not retained properly, the wiper blade
may scratch the windshield.
6. Install the wiper blade assembly to the wiper arm.
Make sure that it locks in place.
7. Hold the wiper arm by hand and slowly lower it in
position.
Battery
" Before beginning work on or near any bat-
tery, be sure to extinguish all cigarettes, match-
es, and lighters. Never expose a battery to an
open flame or electric sparks. Batteries give off
a gas which is highly flammable and explosive. " For safety, in case an explosion does occur,
wear eye protection or shield your eyes when
working near any battery. Never lean over a bat- tery." Do not let battery fluid contact eyes, skin,
fabrics, or paint because battery fluid is a cor-
rosive acid. If battery fluid gets on your skin or
in your eyes, immediately flush the area with
water thoroughly. Seek medical help immedi-
ately if acid has entered the eyes.
If battery fluid is accidentally swallowed, imme-
diately drink a large amount of milk or water,
and seek medical attention immediately." To lessen the risk of sparks, remove rings,
metal watchbands, and other metal jewelry.
Never allow metal tools to contact the positive
battery terminal and anything connected to it
WHILE you are at the same time in contact with
1
HSB062BB

11 -5 9
Maintenance and service
– CONTINUED –
any other metallic portion of the vehicle be-
cause a short circuit will result. "Keep everyone including children away from
the battery. " Charge the battery in a well-ventilated area.
" Battery posts, terminals and related accesso-
ries contain lead and lead compounds, chemi-
cals known to the State of California to cause
cancer and reproductive harm. Wash hands af-
ter handling.
1) Cap
2) Upper level
3) Lower level It is unnecessary to periodically check the battery fluid
level or periodically refill with distilled water.
However, if the battery fluid level is below the lower
level, remove the cap. Fill to the upper level with dis-
tilled water.
Never use more than 10 amperes when charg-
ing the battery because it will shorten battery
life.
UPPER LEVELUPPER LEVELLO
WER
LE VELWER LEVEL
1
2 3
HSB063BB

12-3
Specifications
– CONTINUED –
!Engine
! Electrical system
AT: Automatic transmission
MT: Manual transmission
Engine modelEJ251(2.5-liter, SOHC, non-turbo)EJ205 (2.0-liter, DOHC, turbo)EJ257 (2.5-liter, DOHC, turbo)
Engine typeHorizontally opposed, liquid cooled 4 cylinder, 4-stroke gasoline engine
Displacement cu in. (cc)150 (2,457)122 (1,994)150 (2,457)
Bore × Stroke in. (mm)3.9 × 3.1 (99.5 × 79.0)3.6 × 2.9 (92.0 × 75.0)3.9 × 3.1 (99.5 × 79.0)
Compression ratio10.0 : 18.0 : 18.2 : 1
Firing order1 – 3 – 2 – 4
Battery type and
capacity (5HR)MT12V-48AH (55D23L)
ATWith 2.5-liter engine12V-52AH (75D23L)
With 2.0-liter turbo engine12V-52AH (65D23L)
Alternator2.5-liter and 2.0-liter turbo engine12V – 75A
2.5-liter turbo engine12V – 90A
Spark plugs2.5-liter engineRC10YC4 (Champion)
BKR6E-11 (NGK)
BKR5E-11 (NGK)
2.0-liter turbo enginePFR6G (NGK)
2.5-liter turbo engineIFLR6B (NGK)

14-2
Index
A
ABS (Anti-lock Brake System)
...............................7-30
Warning light ................................................. 3-23, 7-31
Accessories ......................................................... 5-3, 11-63
Accessory power outlet ...................................6-9, 6-11
Active head restraint .................................................. 1-6
Air cleaner element ..................................................... 11-23
Air conditioner operation ..........................................4-9
Air filtration system ..................................................... 4-20
Air flow selection .......................................................... 4-2
Aluminum wheels ........................................................ 11-53
Ambient temperature gauge .........................3-11, 3-18
Antenna system ........................................................... 5-2
Anti-lock Brake System (ABS) ...............................7-30
Arming the system ...................................................... 2-15
Armrest ............................................................................ 1-9
Ashtray ............................................................................. 6-12
AT OIL TEMPerature warning light ......................3-22
Audio set ......................................................................... 5-3
Auto-dimming mirror /compass .............................3-44
Automatic/Emergency Locking Retractor (A/ELR) ....................................................................... 1-15
Automatic transmission ............................................. 7-21
Capacities ................................................................. 12-4
Fluid ............................................................................ 11-31
Selector lever .......................................................... 7-22
Shift lock release ................................................... 7-26Temperature warning light
.................................3-22
BBattery ............................................................................... 11-58
Jump starting ........................................................... 9-14
Replacement (Remote keyless entry system) .................................................................... 2-9
Brake Booster ....................................................................... 11-40
Fluid ............................................................................. 11-37
Pad and lining .......................................................... 11-42
Pedal ........................................................................... 11-40
Brake system ................................................................. 7-29
Warning light ............................................................ 3-24
Braking .............................................................................. 7-28
Breaking-in of new brake pads and linings .11-43
Tips .............................................................................. 7-28
Brake pedal
Free play .................................................................... 11-40
Reserve distance ................................................... 11-41
Bulb
Chart ............................................................................ 12-9
Replacing ................................................................... 11-64
C
Capacities ........................................................................ 12-4