2018 SUBARU WRX checking oil

(155,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
NOTEEven if the REV alarm system is not set,
the REV indicator light will flash when-
ever the engine speed enters the red
zone of the tachometer.
To change the REV indicator settings,
perform the procedures described in
“REV settings (STI)”F3-43.
Warning and indicator lightsSeveral of the warning and indicator lights
illuminate when you initially turn the igni-
tion switch to the“ON”position. This
permits checking the operation of the
bulbs.
Apply the parking brake and turn the
ignition switch to the“ON”position. For
the system check, the following lights
illuminate and then turn off after several
seconds or after the engine has started.: Seatbelt warning light
(The seatbelt warning light turns off
only when the driver fastens the seat-
belt.): Front passenger’s seatbelt warning
light
(The seatbelt warning light turns off
only when the front seat passenger
fastens the seatbelt.): SRS airbag system warning light
ON /
: Front passenger’s frontal airbag
ON indicator light
/
: Front passenger’s frontal airbag
OFF indicator light
: CHECK ENGINE warning light/Mal-
function indicator light
: Charge warning light: Oil pressure warning light: REV indicator light (STI): AT OIL TEMP warning light
(CVT models): Rear differential oil temperature warn-
ing light (STI): Low tire pressure warning light
(U.S.-spec. models)/
: ABS warning light
/
: Brake system warning light: Electronic parking brake indicator
light (models with the electronic
parking brake system)
: Low fuel warning light: Hill start assist warning light/Hill start
assist OFF indicator light (models
without electronic parking brake sys-
tem): Door open warning light: AWD warning light (if equipped): Power steering warning light (except
STI)
–CONTINUED–
Instruments and controls/Warning and indicator lights
3-13
3

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
NOTEThis light also illuminates when the fuel
filler cap is not tightened until it clicks.
If you have recently refueled your vehicle,
the cause of the CHECK ENGINE warning
light/malfunction indicator light illuminating
could be a loose or missing fuel filler cap.
Remove the cap and retighten it until it
clicks. Make sure nothing is interfering with
the sealing of the cap. Tightening the cap
will not make the CHECK ENGINE warn-
ing light/malfunction indicator light turn off
immediately. It may take several driving
trips. If the light does not turn off, take your
vehicle to your authorized SUBARU dealer
immediately.
!If the light is blinking
If the light is blinking while driving, an
engine misfire condition has been de-
tected which may damage the emission
control system.
To prevent serious damage to the emis-
sion control system, you should do the
following.
.Reduce vehicle speed.
.Avoid hard acceleration.
.Avoid steep uphill grades.
.Reduce the amount of cargo, if possi-
ble.The CHECK ENGINE warning light may
stop blinking and illuminate steadily after
several driving trips. You should have your
vehicle checked by an authorized
SUBARU dealer immediately.
&Charge warning lightIf this light illuminates when the engine is
running, it may indicate that the charging
system is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
engine at the first safe opportunity and
check the alternator belt. If the belt is
loose, broken or if the belt is in good
condition but the light remains illuminated,
contact your nearest SUBARU dealer
immediately.&Oil pressure warning
lightIf this light illuminates when the engine is
running, it may indicate that the engine oil
pressure is low and the lubricating system
is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
engine at the first safe opportunity and
check the engine oil level. If the oil level is
low, add oil immediately. If the engine oil is
at the proper level but the light remainsilluminated, contact your nearest
SUBARU dealer immediately.
For details about checking the engine oil
level or adding the engine oil, refer to
“Engine oil”F11-13.
CAUTION
Do not operate the engine with the
oil pressure warning light on. This
may cause serious engine damage.&Engine low oil level
warning indicator
(except STI)This indicator appears when the engine oil
level decreases to the lower limit.
If the engine low oil level warning indicator
appears while driving, park the vehicle in a
safe and level location, and then check the
engine oil level. When the engine oil level
is not within the normal range, refill with
engine oil. Refer to“Engine oil”F11-13.
If the warning indicator does not disappear
after refilling the engine oil, or the warning
indicator appears even though the engine
oil level is within the normal range, have
the vehicle checked by a SUBARU dealer.
–CONTINUED–
Instruments and controls/Warning and indicator lights
3-17
3

(231,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Ventilator control....................................................4-2
Center and side ventilators.................................... 4-2
Climate control panel.............................................4-3
Type A ................................................................... 4-3
Type B ................................................................... 4-4
Automatic climate controloperation..................... 4-5
Sensors................................................................. 4-5
Manual climate controloperation..........................4-6
Airflow mode selection........................................... 4-6
Temperature control............................................... 4-7
Fan speed control.................................................. 4-8
Air conditioner control........................................... 4-8
Air inlet selection................................................... 4-8
Defrosting................................................................4-9Operating tips for heater andair conditioner...... 4-9
Cleaning ventilation grille.......................................4-9
Efficient cooling after parking in direct sunlight ......4-9
Lubrication oil circulation in the refrigerant
circuit..................................................................4-9
Checking air conditioning system before summer
season................................................................4-9
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..............................................4-10
Replacing a cabin air filter.................................... 4-11
Climate control
4

(239,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
DefrostingPerform either of the following operations
to defrost or to dehumidify the windshield
and front door windows.
.Select the“
”mode by pressing the
defroster button (both types A and B)
.Select the“”mode by turning the
airflow mode selection dial (type A)
.Select the“”mode by pressing the
airflow mode selection button (type B)
NOTEWhen the“
”or“
”mode is se-
lected, the air conditioner compressor
operates automatically regardless of
the position of the air conditioner
button to defrost the windshield more
quickly. However the indicator on the
air conditioner button will not illumi-
nate. At the same time, the air inlet
selection is automatically set to the
outside air mode. After defrosting the
windshield by pressing the defroster
button“
”, pressing the button again
returns the system to the setting that
had been selected before the defroster
was activated.
Operating tips for heater and
air conditioner&Cleaning ventilation grille1) Front ventilation inlet grilleAlways keep the front ventilation inlet grille
free of snow, leaves, or other obstructions
to ensure efficient heating and defrosting.
Since the condenser is located in front of
the radiator, this area should be kept clean
because cooling performance is impaired
by any accumulation of insects and leaves
on the condenser.
&Efficient cooling after parking
in direct sunlightAfter parking in direct sunlight, drive with
the windows open for a few minutes to
allow outside air to circulate into the
heated interior. This results in quicker
cooling by the air conditioner. Keep the
windows closed during the operation of the
air conditioner for maximum cooling effi-
ciency.&Lubrication oil circulation in
the refrigerant circuitOperate the air conditioner compressor at
a low engine speed (at idle or low driving
speeds) a few minutes each month during
the off-season to circulate its oil.&Checking air conditioning
system before summer sea-
sonCheck the air conditioner unit for refriger-
ant leaks, hose conditions, and proper
operation each spring. Have the air con-
ditioning system checked by your
SUBARU dealer.
–CONTINUED–
Climate control/Defrosting
4-9
4

(499,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
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...................................................... 11-5
When checking or servicing in the engine
compartment while the engine is running............ 11-5
Maintenance tips................................................... 11-6
Removing and reinstalling clips............................ 11-6
Engine hood.......................................................... 11-9
Engine compartment overview.......................... 11-11
STI...................................................................... 11-11
Except STI.......................................................... 11-12
Engine oil............................................................. 11-13
Engine oil consumption...................................... 11-13
Checking the oil level.......................................... 11-13
Changing the oil and oil filter.............................. 11-15
Recommended grade and viscosity..................... 11-15
Synthetic oil........................................................ 11-16
Cooling system................................................... 11-16
Cooling fan, hose and connections..................... 11-17
Engine coolant.................................................... 11-17
Air cleaner element............................................. 11-18
Replacing the air cleaner element........................ 11-19
Spark plugs......................................................... 11-21
Recommended spark plugs................................. 11-21
Drive belts........................................................... 11-21Manual transmission oil......................................11-22
Recommended grade and viscosity..................... 11-22
Continuously variable transmission fluid..........11-22
Front differential gear oil (CVT models) and
rear differential gear oil....................................11-23
Recommended grade and viscosity..................... 11-23
Power steering fluid (STI)...................................11-23
Checking the fluid level...................................... 11-23
Recommended fluid............................................ 11-24
Brake fluid............................................................11-24
Checking the fluid level...................................... 11-24
Recommended brake fluid.................................. 11-25
Clutch fluid (MT models).....................................11-25
Checking the fluid level...................................... 11-25
Recommended clutch fluid................................. 11-26
Brake booster......................................................11-26
Brake pedal..........................................................11-27
Checking the brake pedal free play..................... 11-27
Checking the brake pedal reserve distance ......... 11-27
Clutch pedal (MT models)...................................11-27
Checking the clutch function .............................. 11-27
Checking the clutch pedal free play.................... 11-28
Hill start assist system.......................................11-28
Replacement of brake pad andlining................11-28
Breaking-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)........................................................... 11-29
Maintenance and service
11

(502,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
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 airbag system or seat-
belt pretensioner system, or at-
tempt to take its connectors
apart, as that may activate the
system or it can render it inop-
erative. NEVER use a circuit tes-
ter for this wiring. If your SRS
airbag or seatbelt pretensioner
needs service, consult your near-
est SUBARU dealer.
NOTESUBARU does not endorse the use of
non-SUBARU approved flushing sys-
tems and strongly advises against
performing these services on a
SUBARU vehicle. Non-SUBARU ap-
proved flushing systems use chemi-
cals and/or solvents which have not
been tested or approved by SUBARU.
SUBARU warranties do not cover any
part of the vehicle which is damaged by
adding or applying chemicals and/or
solvents other than those approved or
recommended by SUBARU.
&Before checking or servicing
in the engine compartment
WARNING
.Always stop the engine and apply
the parking brake to prevent the
vehicle from moving.
.Always let the engine cool down.
Engine parts become very hot
when the engine is running and
remain hot for some time after the
engine has stopped.
.Do not spill engine oil, engine
coolant, brake fluid or any other
fluid on hot engine components.
This may cause a fire.
.When the ignition switch is in the
“ON”position, the cooling fan
may operate suddenly even when
the engine is stopped. If your
body or clothes come into con-
tact with a rotating fan, that could
result in serious injury. To avoid
risk of injury, perform the follow-
ing precautions.
–Models with push-button start
system:
Always turn the push-button
ignition switch to the“OFF”
position and confirm that theoperation indicator on the
switch is turned off. Then take
the access key fob out from
the vehicle.
–Models without push-button
start system:
Always remove the key from
the ignition switch.
.Before performing any servicing
on a vehicle equipped with a
remote engine start system (a
dealer option) temporarily place
that system in the service mode
to prevent it from unexpectedly
starting the engine.
Maintenance and service/Maintenance precautions
11-4

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 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 compartment.
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 remains
hot for some time after the engine
has stopped.
.Do not apply force on the fender
insulator by placing your handson it, etc. Deformation of the
insulator and its mount may oc-
cur.
&When checking or servicing
in the engine compartment
while the engine is running
WARNING
A 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
11

(511,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Engine oil
CAUTION
.If the level gauge is not pulled out
easily, twist the level gauge right
and left, then pull it out. Other-
wise, you may be injured acci-
dentally straining yourself.
.Use only engine oil with the
recommended grade and vis-
cosity.
.Be careful not to spill engine oil
when adding it. If oil touches the
exhaust pipe, it may cause a bad
smell, smoke, and/or a fire. If
engine oil gets on the exhaust
pipe, be sure to wipe it off.&Engine oil consumptionSome engine oil will be consumed while
driving. The rate of consumption can be
affected by such factors as transmission
type, driving style, terrain and tempera-
ture. Under the following conditions, oil
consumption can be increased and thus
require refilling between maintenance in-
tervals:
.When the engine is new and within the
break-in period.When the engine oil is of lower quality
.When the incorrect oil viscosity is used
.When engine braking is employed
(repeatedly)
.When the engine is operated at high
engine speeds (for extended periods of
time)
.When the engine is operated under
heavy loads (for extended periods of time)
.When the engine idles for extended
periods of time
.When the vehicle is operated in stop
and go and/or heavy traffic situations
.When the vehicle is used under severe
thermal conditions
.When the vehicle accelerates and
decelerates frequently
Under these or similar conditions, you
should check your oil at least every 2nd
fuel fill-up and change your engine oil more
frequently. Different drivers in the same
car may experience different results. If
your oil consumption rate is greater than
expected, contact your authorized
SUBARU retailer who may perform a test
under controlled conditions.
&Checking the oil level1. Park the vehicle on a level surface and
stop the engine. If you check the oil level
just after stopping the engine, wait a few
minutes for the oil to drain back into the oil
pan before checking the level.STI
1) Oil level gauge
2) Oil filler cap
–CONTINUED–Maintenance and service/Engine oil
11-13
11