2016 SUBARU WRX air filter

Ventilator control ................................................. 4-2Center and side ventilators .................................. 4-2
Climate control panel .......................................... 4-3Type A ................................................................ 4-3
Type B ................................................................ 4-4
Automatic climate control operation ................. 4-5Sensors .............................................................. 4-5
Manual climate control operation ...................... 4-6Airflow mode selection ........................................ 4-6
Temperature control ............................................ 4-7
Fan speed control ............................................... 4-8
Air conditioner control ........................................ 4-8
Air inlet selection ................................................ 4-8
Defrosting ............................................................ 4-9Type A ................................................................ 4-9
Type B ................................................................ 4-9 Operating tips for heater and air
conditioner ........................................................ 4-9Cleaning ventilation grille ..................................... 4-9
Efficient cooling after parking in direct
sunlight ........................................................... 4-10
Lubrication oil circulation in the refrigerant
circuit .............................................................. 4-10
Checking air conditioning system before summer
season ............................................................ 4-10
Cooling and dehumidifying in high humidity and
low temperature weather conditions ................. 4-10
Air conditioner compressor shut-off when engine
is heavily loaded .............................................. 4-10
Refrigerant for your climate control system ... ..... 4-10
Air filtration system ........................................... 4-11Replacing an air filter ......................................... 4-11Climate control 4

Air filtration system Replace 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. For the
replacement schedule, refer to the “ War-
ranty and Maintenance Booklet ” .
CAUTIONContact 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.
NOTE The filter can influence the air condi-
tioning, heating and defroster perfor-
mance if not properly maintained. & Replacing an air filter 1. Remove the glove box.
NOTE We recommend that you take mea-
sures to protect the center console
with masking tape first, so that you
avoid scratching the center console
with the glove box.
(1) Open the glove box.
(2) Remove the damper shaft from the
glove box. 1) Stopper
(3) Push both sides of the glove box
inside to unlock the stoppers and then
pull down the glove box as far as it will
go.
(4) Pull out the glove box horizontally Climate control/Air filtration system
– CONTINUED –4-11

Climate control/Air filtration system
and remove the hinge portion. When
doing this, be careful not to damage
the hinge.
2. Remove the air filter according to the
following procedure in order to prevent
dust on the air cleaner from falling to the
inside of its housing.
(1) Push in the four stoppers to
unlock, and then slowly pull out the
air filter 4 in (10 cm) from the housing.
(2) Completely pull out the air filter by
gently tilting the front side of the air
filter downward. 3. Replace the air filter element with a
new one.
CAUTIONThe arrow mark on the filter must
point UP. 4. Reinstall the glove box, and connect
the damper shaft.
5. Close the glove box.
6. Attach the service label to the driver ’ s
side door pillar.4-12

Maintenance schedule ....................................... 11-3
Maintenance precautions ................................... 11-3Before checking or servicing in the engine
compartment .................................................... 11-4
When checking or servicing in the engine
compartment .................................................... 11-5
When checking or servicing in the engine
compartment while the engine is running .......... 11-5
Maintenance tips ................................................ 11-6Removing and reinstalling clips .......................... 11-6
Engine hood ....................................................... 11-9
Engine compartment overview ........................ 11-11STI................................................................... 11-11
Except STI ....................................................... 11-12
Engine oil .......................................................... 11-13Engine oil consumption .................................... 11-13
Checking the oil level ....................................... 11-13
Changing the oil and oil filter ............................ 11-15
Recommended grade and viscosity .................. 11-16
Synthetic oil ..................................................... 11-16
Cooling system ................................................ 11-17Cooling fan, hose and connections ................... 11-17
Engine coolant ................................................. 11-18
Air cleaner element .......................................... 11-19
Replacing the air cleaner element ..................... 11-19
Spark plugs ...................................................... 11-21
Recommended spark plugs .............................. 11-21
Drive belts ........................................................ 11-22
Manual transmission oil .................................. 11-23
Recommended grade and viscosity .................. 11-23 Continuously variable transmission fluid ...... 11-23
Front differential gear oil (CVT models) and
rear differential gear oil ................................ 11-23Recommended grade and viscosity .................. 11-23
Power steering fluid (STI) ............................... 11-24Checking the fluid level .................................... 11-24
Recommended fluid ......................................... 11-24
Brake fluid ........................................................ 11-25Checking the fluid level .................................... 11-25
Recommended brake fluid ............................... 11-25
Clutch fluid (MT models) ................................. 11-26Checking the fluid level .................................... 11-26
Recommended clutch fluid ............................... 11-26
Brake booster .................................................. 11-27
Brake pedal ...................................................... 11-27Checking the brake pedal free play .................. 11-27
Checking the brake pedal reserve distance ....... 1 1-28
Clutch pedal (MT models) ............................... 11-28Checking the clutch function ............................ 11-28
Checking the clutch pedal free play .................. 11-28
Hill start assist system .................................... 11-29
Replacement of brake pad and lining ............ 11-29Breaking-in of new brake pads (models with
electronic parking brake system) .................... 11-29
Breaking-in of new brake pads and linings
(models without electronic parking brake
system) ......................................................... 11-30
Parking brake stroke (models without
electronic parking brake system) ................ 11-30Maintenance and service
11

& When checking or servicing
in the engine compartment
CAUTION. Do not contact the drive belt
cover while checking the compo-
nents in the engine compart-
ment. Doing so may cause your
hand to slip off the cover and
result in an unexpected injury.
. Do not touch the oil filter until the
engine has cooled down comple-
tely. Doing so may result in a
burn or other injury. Note that the
oil filter becomes very hot when
the engine is running and re-
mains hot for some time after
the engine has stopped.
. Do not apply force on the fender
insulator by placing your hands on it, etc. Deformation of the
insulator and its mount may
occur.
& When checking or servicing
in the engine compartment
while the engine is running WARNINGA running engine can be dangerous.
Keep your fingers, hands, clothing,
hair and tools away from the cooling
fan, drive belt and any other moving
engine parts. Removing rings,
watches and ties is advisable.Maintenance and service/Maintenance precautions
11-5

Maintenance and service/Engine compartment overview
& Except STI 1) Brake fluid reservoir/Clutch fluid reservoir
(MT models) (page 11-25)
2) Fuse box (page 11-42)
3) Battery (page 11-41)
4) Windshield washer tank (page 11-38)
5) Engine oil filler cap (page 11-13)
6) Engine coolant reservoir (page 11-18)
7) Radiator cap (page 11-18)
8) Engine oil filter (page 11-15)
9) Engine oil level gauge (page 11-13)
10) Air cleaner case (page 11-19)
11-12

CAUTION. Be careful not to spill engine
coolant when adding it. If coolant
touches the exhaust pipe, it may
cause a bad smell, smoke, and/or
a fire. If engine coolant gets on
the exhaust pipe, be sure to wipe
it off.
. Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
! Changing the coolant
It may be difficult to change the coolant.
Have the coolant changed by your
SUBARU dealer if necessary.
The coolant should be changed according
to the maintenance schedule in the
“ Warranty and Maintenance Booklet ” .Air cleaner element WARNINGDo 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.
CAUTIONWhen 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
element Replace 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.
! STI
1. Use a screwdriver to undo the clips on
the air intake duct, then remove the air
intake duct. Maintenance and service/Air cleaner element
– CONTINUED –11-19