2011 SUBARU IMPREZA WRX STI air filter

Black plate (7,1)
北米Model "A1110BE-C" EDITED: 2010/ 11/ 17
Ventilator .............................................................. 4-2
Airflow selection ................................................. 4-2
Center and side ventilators .................................. 4-3
Manual climate control system
(if equipped) ..................................................... 4-3
Control panel ...................................................... 4-3
Heater operation ................................................. 4-5
Air conditioner operation ..................................... 4-7
Automatic climate control system
(if equipped) ..................................................... 4-8
Control panel ...................................................... 4-8
To use as full-automatic climate control system .............................................................. 4-8
To use as semi-automatic climate control system .............................................................. 4-8
Fan speed control dial ......................................... 4-9
Temperature control dial ...................................... 4-9
Airflow control dial .............................................. 4-9
Air inlet selection button .................................... 4-10 Air conditioner button
........................................ 4-11
Temperature sensors ......................................... 4-11
Operating tips for heater and air
conditioner ...................................................... 4-12
Cleaning ventilation grille ................................... 4-12
Efficient cooling after parking in direct sunlight ........................................................... 4-12
Lubrication oil circulation in the refrigerant circuit .............................................................. 4-12
Checking air conditioning system before summer season ............................................................ 4-12
Cooling and dehumidifying in high humidity and low temperature weather conditions ................. 4-12
Air conditioner compressor shut-off when engine is heavily loaded .............................................. 4-13
Refrigerant for your climate control system ... ..... 4-13
Air filtration system........................................... 4-13
Replacing an air filter ......................................... 4-13
Climate control
4

Black plate (187,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
system.& Air conditioner compressor
shut-off when engine is
heavily loadedTo improve acceleration and gas mileage,
the air conditioner compressor is designed
to temporarily shut off during air condi-
tioner operation whenever the accelerator
is fully depressed such as during rapid
acceleration or when driving on a steep
upgrade.&Refrigerant for your climate
control systemYour air conditioner uses ozone friendly
refrigerant HFC134a. Therefore, the meth-
od of adding, changing or checking the
refrigerant is different from the method for
CFC12 (freon). Consult your SUBARU
dealer for service. Repairs needed as a
result of using the wrong refrigerant are
not covered under warranty.
Air filtration systemReplace the filter element according to the
replacement schedule as follows. This
schedule should be followed to maintain
the filter ’s dust collection ability. Under
extremely dusty conditions, the filter
should be replaced more frequently. It is
recommended that you have your filter
checked or replaced by your SUBARU
dealer. For replacement, use only a
genuine SUBARU air filter kit.Replacement schedule:
Every 12 months or 7,500 miles (12,000
km) whichever comes first
CAUTION
Contact your SUBARU dealer if the
following occurs, even if it is not yet
time to change the filter:
. Reduction of the airflow through
the vents.
. Windshield gets easily fogged or
misted.NOTEThe filter can influence the air condi-
tioning, heating and defroster perfor- mance if not properly maintained.
&
Replacing an air filter1. Remove the glove box.
(1) Open the glove box.
(2) Remove the damper shaft from the
glove box.
Climate control
4-13
–CONTINUED –
4

Black plate (188,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
4-14
Climate control
(3) Pull out the glove box.
2. Remove the air filter.
3. Replace the air filter element with a
new one.
CAUTION
The arrow mark on the filter must
point UP.
4. Reinstall the glove box, and connect
the damper shaft.
5. Close the glove box.
6. LABEL installation
(1) Attach the service label to the
driver ’s side door pillar.

Black plate (189,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
1) Caution label(2) Attach the caution label next to the
air filter as shown in the illustration.
Climate control
4-15
4

Black plate (21,1)
北米Model "A1110BE-C" EDITED: 2010/ 11/ 17
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 .......................... 11-7
Non-turbo models.............................................. 11-7
Turbo models except STI .................................... 11-8
STI..................................................................... 11-9
Engine oil .......................................................... 11-10
Checking the oil level ....................................... 11-10
Changing the oil and oil filter ............................ 11-11
Recommended grade and viscosity .................. 11-13
Synthetic oil ..................................................... 11-13
Cooling system ................................................ 11-13
Cooling fan, hose and connections ................... 11-14
Engine coolant ................................................. 11-14
Air cleaner element .......................................... 11-17
Replacing the air cleaner element ..................... 11-17
Spark plugs...................................................... 11-19
Recommended spark plugs .............................. 11-20
Drive belts........................................................ 11-20
Manual transmission oil .................................. 11-21
Checking the oil level....................................... 11-21
Recommended grade and viscosity .................. 11-21
Automatic transmission fluid.......................... 11-22
Checking the fluid level.................................... 11-22
Recommended fluid ......................................... 11-23
Front differential gear oil (AT models) ........... 11-23
Checking the oil level...................................... 11-23
Recommended grade and viscosity .................. 11-24
Rear differential gear oil.................................. 11-24
Recommended grade and viscosity .................. 11-24
Power steering fluid........................................ 11-24
Checking the fluid level .................................... 11-24
Recommended fluid ......................................... 11-25
Brake fluid........................................................ 11-25
Checking the fluid level .................................... 11-25
Recommended brake fluid ............................... 11-26
Clutch fluid (MT models)................................. 11-26
Checking the fluid level.................................... 11-26
Recommended clutch fluid ............................... 11-27
Brake booster.................................................. 11-27
Brake pedal ...................................................... 11-28
Checking the brake pedal free play .................. 11-28
Checking the brake pedal reserve distance....... 11-28
Clutch pedal (MT models) ............................... 11-29
Checking the clutch function ............................ 11-29
Checking the clutch pedal free play .................. 11-29
Hill start assist system (MT models –if
equipped) ...................................................... 11-29
Replacement of brake pad and lining ............ 11-30
Breaking-in of new brake pads and linings ....... 11-30
Parking brake stroke....................................... 11-31
Maintenance and service
11

Black plate (377,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
correctly in place.
8. Start and race the engine at 2,000 to
3,000 rpm for 5 to 6 times within 40
seconds.
9. Stop the engine and wait until the
coolant cools down (122 to 140 8F [50 to
60 8C]). If there is any loss of coolant, add
coolant to the radiator ’s filler neck and to
the reserve tank ’s “FULL ”level.
10. Put the radiator cap and reservoir cap
back on and tighten firmly.
Air cleaner element
WARNING
Do not operate the engine with the
air cleaner element removed. The air
cleaner element not only filters
intake air but also stops flames if
the engine backfires. If the air
cleaner element is not installed
when the engine backfires, you
could be burned.
CAUTION
When replacing the air cleaner ele-
ment, use a genuine SUBARU air
cleaner element. If it is not used,
there is the possibility of causing a
negative effect to the engine.
The air cleaner element functions as a
filter screen. When the element is perfo-
rated or removed, engine wear will be
excessive and engine life shortened.
It is not necessary to clean or wash the air
cleaner element.
& Replacing the air cleaner
elementReplace the air cleaner element according
to the maintenance schedule in the
“Warranty and Maintenance Booklet ”. Un-
der extremely dusty conditions, replace it
more frequently. It is recommended that
you always use genuine SUBARU parts.
! Non-turbo models1) Connector
2) Clip
3) Clamp
4) Air intake boot
5) Clip1. Unplug the connector that is attached
to the top of the air cleaner case.
2. Detach the connector cable from the
clip on the right side on the air cleaner
Maintenance and service
11-17
–CONTINUED –
11