2004 SUBARU IMPREZA WRX brake

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 -3 1
Maintenance and service
– CONTINUED –
Automatic transmission fluid !Checking the fluid level
The automatic transmission fluid expands largely as
its temperature rises; the fluid level differs according to
fluid temperature. Therefore, there are two different
scales for checking the level of hot fluid and cold fluid
on the dipstick.
Though the fluid level can be checked without warm-
ing up the fluid on the “COLD” range, we recommend
checking the fluid level when the fluid is at operating
temperature. ! Checking the fluid level when the fluid is hot
1. Drive the vehicle several miles to raise the temper-
ature of the transmission fluid up to normal operating
temperature; 158 to 176 °F (70 to 80 °C) is normal.
2. Park the vehicle on a level surface and set the park-
ing brake.
3. First shift the selector lever in each position. Then
shift it in the “P” position, and run the engine at idling
speed. 1) Yellow handle
HGB056JB
1

11 -3 7
Maintenance and service
– CONTINUED –
Be careful not to burn yourself because the flu-id may be hot.
"When power steering fluid is being added,
use only clean fluid, and be careful not to allow
any dirt into the tank. And never use different
brands together.
" Avoid spilling fluid when adding it in the tank.
! Recommended fluid
“Dexron III” Type Automatic Transmission Fluid
Brake fluid !Checking the fluid level
1) “MAX” level mark
2) “MIN” level mark
Check the fluid level monthly.
Check the fluid level on the outside of the reservoir. If
the level is below “MIN”, add the recommended brake
fluid to “MAX”.
Use only brake fluid from a sealed container.
MAXMAX
MINMIN
HGB056GB
1 2

11 - 3 8
Maintenance and service
"
Brake fluid absorbs moisture from the air.
Any absorbed moisture can cause a dangerous
loss of braking performance." If the vehicle requires frequent refilling, there
may be a leak. If you suspect a problem, have
the vehicle checked at your SUBARU dealer.
" Never use different brands of brake fluid to-
gether. " When adding brake fluid, be careful not to al-
low any dirt into the reservoir. " Never splash the brake fluid over painted sur-
faces or rubber parts. Alcohol contained in the
brake fluid may damage them.
! Recommended brake fluid
FMVSS No. 116, fresh DOT 3 brake fluid
Clutch fluid (MT vehicles) !Checking the fluid level
1) “MAX” level mark
2) “MIN” level mark
MAXMIN
HGB056HB
1
2

11 -3 9
Maintenance and service
– CONTINUED –
1) “MAX” level mark
2) “MIN” level mark
Check the fluid level on the outside of the reservoir. If
the level is below “MIN” level mark, add the recom-
mended clutch fluid to “MAX” level mark.
Use only clutch fluid from a sealed container.
" Clutch fluid absorbs moisture from the air.
Any absorbed moisture can cause improper
clutch operation. " If the vehicle requires frequent refilling, there
may be a leak. If you suspect a problem, have the vehicle checked at your SUBARU dealer."
Never use different brands of clutch fluid to-
gether. " When clutch fluid is added, be careful not to
allow any dirt into the tank.
! Recommended clutch fluid
FMVSS No. 116, fresh DOT 3 brake fluid
MAXMIN
HGB055CB
1
2

11 - 4 0
Maintenance and service
Brake booster
If the brake booster does not operate as described be-
low, have it checked by your SUBARU dealer.
1. With the engine off, depress the brake pedal sever-
al times, applying the same pedal force each time. The
distance the pedal travels should not vary.
2. With the brake pedal depressed, start the engine.
The pedal should move slightly down to the floor.
3. With the brake pedal depressed, stop the engine
and keep the pedal depressed for 30 seconds. The
pedal height should not change.
4. Start the engine again and run for about one minute
then turn it off. Depress the brake pedal several times
to check the brake booster. Brake booster operates
properly if the pedal stroke decreases with each de- pression.Brake pedal
Check the brake pedal free play and reserve distance
according to the maintenance schedule in the “War-
ranty and Maintenance Booklet”. !
Checking the brake pedal free play
1) 0.04 – 0.12 in (1.0 – 3.0 mm)
Stop the engine and firmly depress the brake pedal
several times. Lightly press the brake pedal down with
one finger to check the free play with a force of less
than 2 lb (10 N, 1 kg).
If the free play is not within proper specification, con-
1
HSB049BB