SUBARU IMPREZA WRX STI 2012 Owners Manual

Black plate (323,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
Moonroof –if moonroof can-
not be closedIf the moonroof cannot be closed with the
moonroof switch, you can close the moon-
roof manually.
1. Take out the hex-head wrench and
screwdriver from the tool bag.2. Remove the spotlight lens by prying
the edge of the lens using flat-head
screwdriver.
3. Remove the two screws that retain the
moonroof switch body. Then, remove the
moonroof switch.4. Insert the wrench in the end of the
motor shaft.
To lower the moonroof, turn the wrench clockwise.
To close the moonroof, turn the wrench
counterclockwise.
Have your vehicle checked and repaired
by an authorized SUBARU dealer.
In case of emergency
9-17
9

Black plate (2,1)
Model "ALL_MODEL_MEMO" EDITED: 2007/ 6/ 22
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Black plate (19,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 2
Exterior care ....................................................... 10-2
Washing............................................................. 10-2
Waxing and polishing ......................................... 10-3
Cleaning aluminum wheels ................................. 10-3
Corrosion protection.......................................... 10-4
Most common causes of corrosion ..................... 10-4
To help prevent corrosion ................................... 10-4
Cleaning the interior.......................................... 10-5
Seat fabric......................................................... 10-5
Leather seat materials ........................................ 10-5
Synthetic leather upholstery ............................... 10-5
Climate control panel, audio panel, instrument panel, console panel, and switches .................. 10-5
Navigation monitor (if equipped) ........................ 10-6
Appearance care
10

Black plate (326,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
10-2
Appearance care
Exterior care& Washing
CAUTION
. When washing the vehicle, the
brakes may get wet. As a result,
the brake stopping distance will
be longer. To dry the brakes,
drive the vehicle at a safe speed
while lightly depressing the
brake pedal to heat up the
brakes.
. Do not wash the engine compart-
ment and area adjacent to it. If
water enters the engine air in-
take, electrical parts or the power
steering fluid reservoir, it will
cause engine trouble or a mal-
function of power steering.
. Do not use any organic solvents
when washing the surface of the
bulb assembly cover. However, if
a detergent with organic solvents
is used to wash the cover sur-
face, completely rinse off the
detergent with water. Otherwise,
the cover surface may be da-
maged.
. For 5-door models, since your
vehicle is equipped with a rear wiper, automatic car-wash
brushes could become tangled
around it, damaging the wiper
arm and other components. Ask
the automatic car-wash operator
not to let the brushes touch the
wiper arm or to fix the wiper arm
on the rear window glass with
adhesive tape before operating
the machine.
NOTEWhen having your vehicle washed in
an automatic car wash, make sure
beforehand that the car wash is of
suitable type.
The best way to preserve your vehicle’
s
beauty is frequent washing. Wash the
vehicle at least once a month to avoid
contamination by road grime.
Wash dirt off with a wet sponge and plenty
of lukewarm or cold water. Do not wash
the vehicle with hot water and in direct
sunlight.
Salt, chemicals, insects, tar, soot, tree
sap, and bird droppings should be washed
off by using a light detergent, as required.
If you use a light detergent, make certain
that it is a neutral detergent. Do not use
strong soap or chemical detergents. All cleaning agents should be promptly
flushed from the surface and not allowed
to dry there. Rinse the vehicle thoroughly
with plenty of lukewarm water. Wipe the
remaining water off with a chamois or soft
cloth.
!
Washing the underbody
Chemicals, salts and gravel used for
deicing road surfaces are extremely cor-
rosive, accelerating the corrosion of un-
derbody components, such as the exhaust
system, fuel and brake lines, brake
cables, floor pan and fenders, and sus-
pension.
Thoroughly flush the underbody and in-
side of the fenders with lukewarm or cold
water at frequent intervals to reduce the
harmful effects of such agents.
Mud and sand adhering to the underbody
components may accelerate their corro-
sion.
After driving off-road or on muddy or
sandy roads, wash the mud and sand off
the underbody. Carefully flush the suspen-
sion and axle parts, as they are particu-
larly prone to mud and sand buildup. Do
not use a sharp-edged tool to remove
caked mud.

Black plate (327,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
CAUTION
. Be careful not to damage brake
hoses, sensor harnesses, and
other parts when washing sus-
pension components.
. Be careful not to flush the engine
bottom for a long time. It may
cause damage of some electrical
parts.
! Using a warm water washer
. Keep a good distance of 12 in (30 cm)
or more between the washer nozzle and
the vehicle.
. Do not wash the same area continu-
ously.
. If a stain will not come out easily, wash
by hand. Some warm water washers are
of the high temperature, high pressure
type, and they can damage or deform the
resin parts such as moldings, or cause
water to leak into the vehicle.& Waxing and polishingAlways wash and dry the vehicle before
waxing and polishing.
Use a good quality polish and wax and
apply them according to the manufac-
turer ’s instructions. Wax or polish when
the painted surface is cool. Be sure to polish and wax the chrome trim,
as well as the painted surfaces. Loss of
wax on a painted surface leads to loss of
the original luster and also quickens the
deterioration of the surface. It is recom-
mended that a coat of wax be applied at
least once a month, or whenever the
surface no longer repels water.
If the appearance of the paint has dimin-
ished to the point where the luster or tone
cannot be restored, lightly polish the
surface with a fine-grained compound.
Never polish just the affected area, but
include the surrounding area as well.
Always polish in only one direction. A
No. 2000 grain compound is recom-
mended. Never use a coarse-grained
compound. Coarse-grained compounds
have a smaller grain-size number and
could damage the paint. After polishing
with a compound, coat with wax to restore
the original luster. Frequent polishing with
acompoundoranincorrectpolishing
technique will result in removing the paint
layer and exposing the undercoat. When
in doubt, it is always best to contact your
SUBARU dealer or an auto paint specia-
list.
CAUTION
Do not use any agents with organic
solvents on the surface of the bulb
assembly cover. However, if a polish
or wax with organic solvents is
applied to the cover surface, com-
pletely wipe off the polish or wax.
Otherwise, the cover surface may be
damaged.
NOTEBe careful not to block the windshield
washer nozzles with wax when waxing
the vehicle.&
Cleaning aluminum wheels. Promptly wipe the aluminum wheels
clean of any kind of grime or agent. If dirt
is left on too long, it may be difficult to
clean off.
. Do not use soap containing grit to
clean the wheels. Be sure to use a neutral
cleaning agent, and later rinse thoroughly
with water. Do not clean the wheels with a
stiff brush or expose them to a high-speed
washing device.
. Clean the vehicle (including the alumi-
num wheels) with water as soon as
possible when it has been splashed with
sea water, exposed to sea breezes, or
driven on roads treated with salt or other
agents.
Appearance care
10-3
10

Black plate (328,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
10-4
Appearance care
Corrosion protectionYour SUBARU has been designed and
built to resist corrosion. Special materials
and protective finishes have been used on
most parts of the vehicle to help maintain
fine appearance, strength, and reliable
operation.& Most common causes of
corrosionThe most common causes of corrosion
are:
1. The accumulation of moisture retain-
ing dirt and debris in body panel sections,
cavities, and other areas.
2. Damage to paint and other protective
coatings caused by gravel and stone
chips or minor accidents.
Corrosion is accelerated on the vehicle
when:
1. It is exposed to road salt or dust
control chemicals, or used in coastal
areas where there is more salt in the air,
or in areas where there is considerable
industrial pollution.
2. It is driven in areas of high humidity,
especially when temperatures range just
above freezing.
3. Dampness in certain parts of the
vehicle remains for a long time, even though other parts of the vehicle may be
dry.
4. High temperatures will cause corro-
sion to parts of the vehicle which cannot
dry quickly due to lack of proper ventila-
tion.
&
To help prevent corrosionWash the vehicle regularly to prevent
corrosion of the body and suspension
components. Also, wash the vehicle
promptly after driving on any of the
following surfaces.
. roads that have been salted to prevent
them from freezing in winter
. mud, sand, or gravel
. coastal roads
After the winter has ended, it is recom-
mended that the underbody be given a
very thorough washing.
Before the beginning of winter, check the
condition of underbody components, such
as the exhaust system, fuel and brake
lines, brake cables, suspension, steering
system, floor pan, and fenders. If any of
them are found to be rusted, they should
be given an appropriate rust prevention
treatment or should be replaced. Contact
your SUBARU dealer to perform this kind
of maintenance and treatment if you need assistance.
Repair chips and scratches in the paint as
soon as you find them.
Check the interior of the vehicle for water
and dirt accumulation under the floor mats
because that could cause corrosion.
Occasionally check under the mats to
make sure the area is dry.
Keep your garage dry. Do not park your
vehicle in a damp, poorly ventilated
garage. In such a garage, corrosion can
be caused by dampness. If you wash the
vehicle in the garage or put the vehicle
into the garage when wet or covered with
snow, that can cause dampness.
If your vehicle is operated in cold weather
and/or in areas where road salts and other
corrosive materials are used, the door
hinges and locks, trunk lid lock, and hood
latch should be inspected and lubricated
periodically.

Black plate (329,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
Cleaning the interiorUse a soft, damp cloth to clean the climate
control panel, audio equipment, instru-
ment panel, center console, combination
meter panel, and switches. (Do not use
organic solvents.)& Seat fabricRemove loose dirt, dust or debris with a
vacuum cleaner. If the dirt is caked on the
fabric or hard to remove with a vacuum
cleaner, use a soft brush then vacuum it.
Wipe the fabric surface with a tightly
wrung cloth and dry the seat fabric
thoroughly. If the fabric is still dirty, wipe
using a solution of mild soap and luke-
warm water then dry thoroughly.
If the stain does not come out, try a
commercially-available fabric cleaner. Use
the cleaner on a hidden place and make
sure it does not affect the fabric adversely.
Use the cleaner according to its instruc-
tions.NOTEWhen cleaning the seat, do not use
benzine, paint thinner, or any similar
materials.
&Leather seat materialsThe leather used by SUBARU is a high
quality natural product which will retain its
distinctive appearance and feel for many
years with proper care.
Allowing dust or road dirt to build up on the
surface can cause the material to become
brittle and to wear prematurely. Regular
cleaning with a soft, moist, natural fiber
cloth should be performed monthly, taking
care not to soak the leather or allow water
to penetrate the stitched seams.
A mild detergent suitable for cleaning
woolen fabrics may be used to remove
difficult dirt spots, rubbing with a soft, dry
cloth afterwards to restore the luster. If
your SUBARU is to be parked for a long
time in bright sunlight, it is recommended
that the seats and head restraints be
covered, or the windows shaded, to
prevent fading or shrinkage.
Minor surface blemishes or bald patches
may be treated with a commercial leather
spray lacquer. You will discover that each
leather seat section will develop soft folds
or wrinkles, which is characteristic of
genuine leather.
&Synthetic leather upholsteryThe synthetic leather material used on the
SUBARU may be cleaned using mild soap
or detergent and water, after first vacuum-
ing or brushing away loose dirt. Allow the
soap to soak in for a few minutes and wipe
off with a clean, damp cloth. Commercial
foam-type cleaners suitable for synthetic
leather materials may be used when
necessary.NOTEStrong cleaning agents such as sol-
vents, paint thinners, window cleaner
or gasoline must never be used on
leather or synthetic interior materials.&Climate control panel, audio
panel, instrument panel,
console panel, and switchesUse a soft, damp cloth to clean the climate
control panel, audio equipment, instru-
ment panel, center console, combination
meter panel, and switches.NOTEDo not use organic solvents such as
paint thinners or gasoline, or strong
cleaning agents that contain those
solvents.
Appearance care
10-5
–CONTINUED –
10

Black plate (330,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
10-6
Appearance care
& Navigation monitor (if
equipped)To clean the navigation monitor, wipe it
with a silicone cloth or with a soft cloth. If
the navigation monitor is extremely dirty,
clean it with a soft cloth moistened with
neutral detergent then carefully wipe off
any remaining detergent.NOTE. Do not spray neutral detergent di-
rectly onto the monitor. Doing so could
damage the monitor ’s components.
. Do not wipe the monitor with a hard
cloth. Doing so could scratch the
monitor.
. Do not use cleaning fluid that con-
tains thinner, gasoline, or any other
volatile substance. Such cleaning fluid
could erase the lettering on the
switches at the bottom of the monitor.

Black plate (21,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 2
Maintenance schedule ....................................... 11-3
Maintenance precautions ................................... 11-3
Before checking or servicing in the engine
compartment .................................................... 11-4
When checking or servicing in the engine compartment .................................................... 11-4
When checking or servicing in the engine compartment while the engine is running .......... 11-5
Engine hood....................................................... 11-5
Engine compartment overview .......................... 11-6
Turbo models except STI.................................... 11-6
STI..................................................................... 11-7
Engine oil ............................................................ 11-8
Checking the oil level ......................................... 11-8
Changing the oil and oil filter .............................. 11-9
Recommended grade and viscosity .................. 11-10
Synthetic oil ..................................................... 11-10
Cooling system ................................................ 11-11
Cooling fan, hose and connections ................... 11-11
Engine coolant ................................................. 11-12
Air cleaner element .......................................... 11-13
Replacing the air cleaner element ..................... 11-13
Spark plugs...................................................... 11-14
Recommended spark plugs .............................. 11-14
Drive belts........................................................ 11-15
Manual transmission oil .................................. 11-15
Checking the oil level....................................... 11-15
Recommended grade and viscosity .................. 11-16
Rear differential gear oil.................................. 11-16
Recommended grade and viscosity .................. 11-16
Power steering fluid........................................ 11-17
Checking the fluid level .................................... 11-17
Recommended fluid ......................................... 11-17
Brake fluid........................................................ 11-18
Checking the fluid level .................................... 11-18
Recommended brake fluid ............................... 11-18
Clutch fluid....................................................... 11-19
Checking the fluid level .................................... 11-19
Recommended clutch fluid ............................... 11-19
Brake booster.................................................. 11-20
Brake pedal ...................................................... 11-20
Checking the brake pedal free play .................. 11-20
Checking the brake pedal reserve distance....... 11-21
Clutch pedal ..................................................... 11-21
Checking the clutch function ............................ 11-21
Checking the clutch pedal free play .................. 11-21
Hill start assist system.................................... 11-22
Replacement of brake pad and lining ............ 11-22
Breaking-in of new brake pads and linings ....... 11-22
Parking brake stroke....................................... 11-23
Tires and wheels .............................................. 11-23
Types of tires................................................... 11-23
Tire pressure monitoring system (TPMS) (if equipped) ...................................................... 11-24
Tire inspection ................................................. 11-25
Tire pressures and wear .................................. 11-25
Wheel balance ................................................. 11-27
Wear indicators ............................................... 11-28
Tire rotation direction mark .............................. 11-28
Tire rotation ..................................................... 11-29
Maintenance and service
11

Black plate (22,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 2
Maintenance and service
Tire replacement .............................................. 11-29
Wheel replacement ........................................... 11-30
Aluminum wheels............................................. 11-30
Windshield washer fluid .................................. 11-31
Replacement of wiper blades .......................... 11-32
Windshield wiper blade assembly ..................... 11-33
Windshield wiper blade rubber (type A and type B) .................................................................. 11-33
Rear window wiper blade assembly (5-door models). ......................................................... 11-34
Rear window wiper blade rubber (5-door models). ......................................................... 11-35
Battery............................................................... 11-36
Fuses ................................................................ 11-37 Installation of accessories
.............................. 11-39
Replacing bulbs ............................................... 11-39
Headlights (models with HID headlights) ........... 11-39
Headlights (models without HID headlights) ...... 11-39
Front turn signal light ...................................... 11-42
Front fog light (if equipped) .............................. 11-42
Rear combination lights ................................... 11-43
Back-up light (5-door) ...................................... 11-45
License plate light ........................................... 11-45
Map light ......................................................... 11-46
Dome light and cargo area light ....................... 11-47
Trunk light ....................................................... 11-47
High mount stop light (4-door) (except LED [Light Emitting Diode] type) ............................ 11-47
Other bulbs ..................................................... 11-47