2004 SUBARU IMPREZA parking brake

11 - 1
11
Maintenance and service
Maintenance schedule ................................. 11-3
Maintenance precautions ............................ 11-3 Before checking or servicing in the engine compartment .................................................. 11-4
When you do checking or servicing in the engine compartment while the engine is
running ............................................................ 11-5
Engine hood .................................................. 11-5
Engine compartment overview ................... 11-8 2.5 liter model .................................................... 11-8
2.0 liter (Turbo) model ...................................... 11-9
2.5 liter (Turbo) model ...................................... 11-10
Engine oil ...................................................... 11-11 Checking the oil level ....................................... 11-11
Changing the oil and oil filter .......................... 11-12
Recommended grade and viscosity ................ 11-16
Recommended grade and viscosity under severe driving conditions .............................. 11-18
Synthetic oil ....................................................... 11-18
Cooling system ............................................. 11-18 Cooling fan, hose and connections ................ 11-19
Engine coolant .................................................. 11-19
Air cleaner element ...................................... 11-23 Replacing the air cleaner element ................... 11-23
Spark plugs ................................................... 11-26 Recommended spark plugs ............................. 11-27
Drive belts ..................................................... 11-27
Manual transmission oil ............................... 11-28 Checking the oil level ....................................... 11-28
Recommended grade and viscosity ................ 11-30 Automatic transmission fluid ...................... 11-31
Checking the fluid level .................................... 11-31
Recommended fluid ......................................... 11-32
Front differential gear oil (AT vehicles) ...... 11-33 Checking the oil level ....................................... 11-33
Recommended grade and viscosity ............... 11-33
Rear differential gear oil ............................... 11-34 Checking the gear oil level .............................. 11-34
Recommended grade and viscosity ............... 11-35
Power steering fluid ...................................... 11-36 Checking the fluid level .................................... 11-36
Recommended fluid ......................................... 11-37
Brake fluid ..................................................... 11-37 Checking the fluid level .................................... 11-37
Recommended brake fluid ............................... 11-38
Clutch fluid (MT vehicles) ............................ 11-38 Checking the fluid level .................................... 11-38
Recommended clutch fluid .............................. 11-39
Brake booster ................................................ 11-40
Brake pedal .................................................... 11-40 Checking the brake pedal free play ................ 11-40
Checking the brake pedal reserve distance ... 11-41
Clutch pedal (MT vehicles) ........................... 11-41 Checking the clutch function .......................... 11-41
Checking the clutch pedal free play ............... 11-42
Replacement of brake pad and lining ......... 11-42 Breaking-in of new brake pads and linings .... 11-43
Parking brake stroke .................................... 11-44
Tires and wheels ........................................... 11-44

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 -4 3
Maintenance and service
– CONTINUED –
If you continue to drive despite the scraping
noise from the audible brake pad wear indica-
tor, it will result in the need for costly brake ro-
tor repair or replacement.
! Breaking-in of new brake pads and lin- ings
When replacing the brake pad or lining, use only gen-
uine SUBARU parts. After replacement, the new parts
must be broken in as follows: ! Brake pad and lining
While maintaining a speed of 30 to 40 mph (50 to 65
km/h), step on the brake pedal lightly. Repeat this five
or more times. ! Parking brake lining
1. Drive the vehicle at a speed of about 22 mph (35 km/h).
2. With the parking brake release button pushed in,
pull the parking brake lever SLOWLY and GENTLY.
(Pulling with a force of approximately 33 lb [147 N, 15 kg].)
3. Drive the vehicle for about 220 yards (200 meters) in this condition.
4. Wait 5 to 10 minutes for the parking brake to cool
down. Repeat this procedure.
5. Check the parking brake stroke. If the parking
brake stroke is out of the specified range, adjust it by
turning the adjusting nut located on the parking brake
lever.
Parking brake stroke:
7 – 8 notches / 44 lb (196 N, 20 kg)
A safe location and situation should be select-ed for break-in driving.
Pulling the parking brake lever too forcefully
may cause the rear wheels to lock. To avoid
this, be certain to pull the lever up slowly and
gently.

11 - 4 4
Maintenance and service
Parking brake stroke
Check the parking brake stroke according to the main-
tenance schedule in the “Warranty and Maintenance
Booklet”. When the parking brake is properly adjusted,
braking power is fully applied by pulling the lever up
seven to eight notches gently but firmly (about 44 lb,
196 N, 20 kg). If the parking brake lever stroke is not
within the specified range, have the brake system
checked and adjusted at your SUBARU dealer.Tires and wheels !
Types of tires
You should be familiar with type of tires present on your vehicle.
The factory-fitted 17-inch tires on the WRX-STi are
summer tires. The factory-fitted tires on other versions
are all-season tires. The 17-inch tires that can be deal-
er-fitted on the WRX as an option are summer tires. ! All season tires
All season tires are designed to provide an adequate
measure of traction, handling and braking perfor-
mance in year-round driving including snowy and icy
road conditions. However all season tires do not offer
as much traction performance as winter (snow) tires in
heavy or loose snow or on icy roads.
All season tires are identified by “ALL SEASON” and/
or “M+S” (Mud & Snow) on the tire sidewall. ! Summer tires
Summer tires are high-speed capability tires best suit-
ed for highway driving under dry conditions.
Summer tires are inadequate for driving on slippery
roads such as on snow-covered or icy roads.
If you drive your vehicle on snow-covered or icy roads,
we strongly recommend the use of winter (snow) tires.
UG7509CA

11 -6 5
Maintenance and service
– CONTINUED –
Wattage Bulb No.
1) Front turn signal 12V–21W —
2) Spot light 12V–8W —
3) Room light 12V–8W —
4) Parking light 12V–5W 168
5) Low beam head light U.S. spec. WRX-STi 12V-35W D2R Except U.S. spec. WRX-STi 12V-55W H1
6) Front fog light 12V–55W H3
7) High beam head light 12V–60W 9005 (HB3)
8) Trunk room light 12V–16W W16W
9) High mount stop light Sedan
(in compartment) 12V–18W 921
(in rear spoiler) 12V–1.2W —
Wagon 12V–13W 912
10) Backup light 12V–21W 7440
11) Rear turn signal 12V–21W (Amber)—
12) Brake light 12V–21W 7440
13) Tail light 12V–21/5W 7443
14) Brake/tail light 12V–21/5W 7443
15) License plate light 12V–5W 168 16) Cargo area light 12V–13W —
Wattage Bulb No.

12-9
Specifications
– CONTINUED –
Bulb chart
Description Wattage Bulb type
Headlight
U.S. spec. WRX-
STi versionLow beam 12V-35W D2R
High beam 12V-60W 9005 (HB3)
Except U.S. spec. WRX-STi version Low beam 12V-55W H1
High beam 12V-60W 9005 (HB3)
Front fog light 12V-55W H3
Front turn signal 12V-21W —
Parking light 12V-5W 168
Rear combination
light Brake light (sedan) 12V-21W 7440
Brake/tail light 12V-21/5W 7443
Turn signal light 12V-21W (Amber) —
Tail light (sedan) 12V-21/5W 7443
Back-up light 12V-21W 7440 High mount stop light
Sedan
(in compartment) 12V-18W 921
Sedan
(in rear spoiler) 12V-1.2W —
Wagon 12V-13W 912
License plate light 12V-5W 168
Trunk room light 12V-16W W16W
Cargo area light 12V-13W —
Front ashtray light 12V-1.4W —
Dome light 12V-8W —
Map light 12V-8W —
Description Wattage Bulb type

14-6
Index
Keys
.................................................................................. 2-2
L
Leather seat materials ............................................... 10-6
Light control switch ..................................................... 3-29
Limited slip differential (LSD) .................................7-27
Loading your vehicle .................................................. 8-17
LSD (Limited slip differential) .................................7-27
M
Main fuse ........................................................................ 11-63
Maintenance Precautions .............................................................. 11-3
Schedule ................................................................... 11-3
Seatbelt ..................................................................... 1-27
Tools ........................................................................... 9-24
Manual climate control system ..............................4-4
Manual transmission 5 speed ..................................................................... 7-15
6 speed ..................................................................... 7-12
Manual transmission oil ............................................ 11-28
Map light ................................................................ 6-3, 11-77
Maximum load limits .................................................. 8-29
Meters and gauges .............................................. 3-7, 3-15
Mirrors .............................................................................. 3-44
Moonroof .............................................................. 2-31, 9-23N
New vehicle break-in driving –
the first 1,000 miles (1,600 km) ........................8-2
O
Odometer/Trip meter .......................................... 3-8, 3-15
Off road driving .............................................................. 8-8
Oil pressure warning light .........................................3-21
Oil filter .............................................................................. 11-12
Oil level
Engine ......................................................................... 11-11
Manual transmission ............................................. 11-28
Rear differential ...................................................... 11-34
Outside mirrors .............................................................. 3-47
Overheating engine ..................................................... 9-16
P
Parking Brake ........................................................................... 7-34
Brake stroke ............................................................. 11-44
Light switch ............................................................... 3-34
Tips .............................................................................. 7-35
Power
Door locking switches .......................................... 2-5
Steering ...................................................................... 7-28
Steering fluid ............................................................ 11-36

14-7
Index
Windows
.................................................................... 2-22
Printed antenna ............................................................ 5-2
R
Rear Combination lights ................................................ 11-74
Differential gear oil ................................................ 11-34
Differential oil temperature warning light .....3-22
Gate ............................................................................ 2-29
Seats ........................................................................... 1-8
Rear seat
Folding down (Wagon) ........................................ 1-12
Rear window Defogger switch ..................................................... 3-40
Wiper and washer switch ...................................3-39
Recommended Automatic transmission fluid .............................11-32
Brake fluid ................................................................. 11-37
Clutch fluid ................................................................ 11-39
OIL grade and viscosity .........11-16, 11-18, 11-30,
11-33, 11-35
Power steering fluid .............................................. 11-37
Spark plugs .............................................................. 11-26
Remote keyless entry system ................................2-6
Replacement Brake pad and lining ............................................ 11-42
Windshield wiper blades .....................................11-55Replacing
Air cleaner element .............................................. 11-23
Battery (remote keyless entry system) .........2-9
Lost transmitters (keyless entry system) .....2-10
Replacing bulbs ............................................................ 11-64
Cargo area light ..................................................... 11-77
Dome light ................................................................ 11-77
Front fog light .......................................................... 11-73
Front turn signal light ........................................... 11-69
Headlight ................................................................... 11-66
High mount stop light ........................................... 11-78
License plate light ................................................. 11-76
Map light .................................................................... 11-77
Parking light ............................................................. 11-70
Rear combination light ........................................11-74
Trunk light ................................................................. 11-78
REV indicator light and buzzer ..............................3-12
Rocking the vehicle .................................................... 8-16
Roof rail and crossbar ............................................... 8-21
SSeat Fabric ......................................................................... 10-6
Heater ........................................................................ 1-7
Seatbelt ............................................................................ 6
Maintenance ............................................................ 1-27
Pretensioners .......................................................... 1-27