2018 SUBARU WRX service

(479,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
TowingIf towing is necessary, it is best done by
your SUBARU dealer or a commercial
towing service. Observe the following
procedures for safety.
WARNING
Never tow AWD models (both CVT
andMTmodels)withthefront
wheels raised off the ground while
the rear wheels are on the ground, or
with the rear wheels raised off the
ground while the front wheels are on
the ground. This will cause the
vehicle to spin away due to the
operation or deterioration of the
center differential.&Towing and tie-down hooks/
holesThe towing hook should be used only in an
emergency.
CAUTION
Use only the specified towing hook
and tie-down hooks/holes. Never
use suspension parts or other parts
of the body for towing or tie-down
purposes.Front towing hook:
1. Take the towing hook, screwdriver and
wheel nut wrench out of the tool bucket.
2. Cover the tip of a flat-head screwdriver
with vinyl tape or cloth so that it will not
scratch the bumper. Insert the flat-head
screwdriver into the cutout of the cover and
pry open the cover.
–CONTINUED–
In case of emergency/Towing
9-21
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(486,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Moonroof (if equipped)–if the
moonroof does not closeIf the moonroof does not close, we
recommend that you have the system
checked by a SUBARU dealer.
If your vehicle is involved in
an accident
CAUTION
If your vehicle is involved in an
accident, be sure to inspect the
ground under the vehicle before
restarting the engine. If you find that
fuel has leaked on the ground, do
not try to restart the engine. The fuel
system has been damaged and is in
need of repair. Immediately contact
the nearest automotive service facil-
ity. We recommend that you consult
your SUBARU dealer.
Your vehicle has a fuel pump shut off
system. To minimize the risk of fire due to
fuel leakage when your vehicle is subject
to impact from an accident or another
factor, the system stops supplying fuel.
However, depending on the impact condi-
tions at the time of collision, the fuel pump
shut-off system may not operate.
Perform the following procedures to restart
the engine after the system is activated.Models without“keyless access with
push-button start system”:
1. Turn the ignition switch to the“LOCK”
or“ACC”position.
2. Restart the engine.
Models with“keyless access with
push-button start system”:
1. Turn the push-button ignition switch to
the“ACC”or“OFF”position.
2. Restart the engine.
In case of emergency/Moonroof–if the moonroof does not close
9-28

(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

(500,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Parking brake stroke (models without
electronic parking brake system)................... 11-30
Tires and wheels................................................. 11-30
Types of tires...................................................... 11-30
Tire pressure monitoring system (TPMS)
(if equipped)..................................................... 11-30
Tire inspection.................................................... 11-32
Tire pressures and wear...................................... 11-32
Wheel balance.................................................... 11-34
Wear indicators................................................... 11-35
Rotational direction of tires................................. 11-35
Tire rotation........................................................ 11-36
Tire replacement................................................. 11-36
Wheel replacement............................................. 11-37
Alloy wheels........................................................ 11-38
Windshield washer fluid..................................... 11-38
Replacement of wiper blades............................ 11-39
Windshield wiper blade assembly........................ 11-40
Windshield wiper blade rubber............................ 11-40
Battery................................................................. 11-41Fuses....................................................................11-42
Installation of accessories..................................11-44
Replacing bulbs...................................................11-44
Headlights (models with LED headlights)............ 11-44
High beam headlight
(models without LED headlights)..................... 11-44
Low beam headlight*, front side marker light,
parking light* and front turn signal light*......... 11-46
Front turn signal light
(models with LED headlights).......................... 11-48
Front fog light
(models with the LED front fog light)............... 11-48
Front fog light (models without the LED front
fog light) (if equipped)..................................... 11-49
Rear combination lights...................................... 11-49
License plate light.............................................. 11-50
Other bulbs........................................................ 11-51
Replacing battery................................................11-51
Safety precautions.............................................. 11-51
Replacing battery of access key fob................... 11-52
Replacing transmitter battery.............................. 11-53
Maintenance and service

(501,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Maintenance scheduleU.S. models
The scheduled maintenance items re-
quired to be serviced at regular intervals
are shown in the“Warranty and Mainte-
nance Booklet”. For details, read the
separate“Warranty and Maintenance
Booklet”.
Canada models
The scheduled maintenance items re-
quired to be serviced at regular intervals
are shown in the“Warranty and Service
Booklet”. For details, read the separate
“Warranty and Service Booklet”.
Other models
Some items of your vehicle are required to
be serviced at scheduled intervals. For
details about your maintenance schedule,
read the separate“Warranty and Main-
tenance Booklet”.NOTEYou can set a reminder to be displayed
when a scheduled maintenance item is
almost due. For details, refer to“Main-
tenance settings”F3-59.
Maintenance precautionsWhen maintenance and service are re-
quired, it is recommended that all work be
done by an authorized SUBARU dealer.
If you perform maintenance and service by
yourself, you should familiarize yourself
with the information provided in this sec-
tion on general maintenance and service
for your SUBARU.
Incorrect or incomplete service could
cause improper or unsafe vehicle opera-
tion. Any problems caused by improper
maintenance and service performed by
you are not eligible for warranty coverage.
WARNING
.Testing of an All-Wheel Drive
model must NEVER be performed
on a single two-wheel dynam-
ometer or similar apparatus. At-
tempting to do so will result in
transmission damage and in un-
controlled vehicle movement and
may cause an accident or injuries
to persons nearby.
.Always select a safe area when
performing maintenance on your
vehicle.
.Always be very careful to avoidinjury when working on the vehi-
cle. Remember that some of the
materials in the vehicle may be
hazardous if improperly used or
handled, for example, battery
acid.
.Your vehicle should only be ser-
viced by persons fully competent
to do so. Serious personal injury
may result to persons not experi-
enced in servicing vehicles.
.Always use the proper tools and
make certain that they are well
maintained.
.Never get under the vehicle sup-
ported only by a jack. Always use
safety stands to support 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 performed only
by your SUBARU dealer.
.Wear adequate eye protection to
guard against getting oil or fluids
–CONTINUED–
Maintenance and service/Maintenance schedule
11-3
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

(504,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Maintenance tipsSome clips and fender linings must be
removed before replacing the air cleaner
elements or specific bulbs.&Removing and reinstalling
clips!Removing clips
There are several types of clips used for
your vehicle.
!Type A clips1. Turn the clips counterclockwise using
a flat-head screwdriver until the center
portion of the clip is raised.
2. Remove the clips with a flat-head
screwdriver using leverage.3. Remove the entire clip by pulling it up.
!Type B clips
!Type C clips
1. Pull out the center portion of the clipusing a flat-head screwdriver as shown in
the illustration.
2. Pull the protruded center portion to
remove the entire body of the clip.
!Type D clips
1. Turn the clip counterclockwise using a
Phillips screwdriver until the center portion
of the clip is raised.
2. Remove the entire clip by pulling it up.
Maintenance and service/Maintenance tips
11-6