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Subaru WRX (2021 year). Manual in english - page 27

(431,1)

2. Turn over the mud guard.

3. Disconnect the electrical connector
from the bulb as pushing the tab.

4. Remove the bulb by turning it counter-
clockwise.
5. Replace the bulb with a new one.
6. Reattach the mud guard.

Rear combination lights

1. Remove the clips from the trunk trim
with a flat-head screwdriver.

2. Open the rear portion of the trunk trim
panel as illustrated.

– CONTINUED –

Maintenance and service/Replacing bulbs

11-49

(432,1)

NOTE

Make sure that the “

” part of the trunk

trim in the illustration does not contact
the trunk lid stay. If the “

” part is bent,

the trunk trim may be torn.

Rear side marker light

Backup light

Rear turn signal light

3. Remove the bulb socket from the rear
combination light assembly by turning it
counterclockwise.
4. Pull the bulb out of the bulb socket and
replace it with a new one.
5. Set the bulb socket into the rear
combination light assembly and turn it
clockwise until it locks.
6. Secure the rear trunk trim panel with
the clips.

NOTE

When replacing a bulb of the rear side
marker light, detach the bulb socket of
the backup light in advance. After
replacing the bulb, first attach the side
marker light, and then attach the back-
up light.

License plate light

1. Open the trunk and remove the clips
from the trunk lid trim with a flat-head
screwdriver.
2. Turn over the trunk lid trim.

3. Turn the bulb socket counterclockwise
and pull out the socket.
4. Pull the bulb out of the socket.
5. Install a new bulb.
6. Reinstall the bulb socket and the trunk
lid trim.

Maintenance and service/Replacing bulbs

11-50

(433,1)

Dome light

1. Remove the lens by prying the edge of
the lens with a flat-head screwdriver.
2. Pull the bulb out of the socket.
3. Install a new bulb.
4. Reinstall the lens.

Trunk light

1. Remove the cover by squeezing its
sides and pulling it.
2. Pull the bulb out of the socket.
3. Install a new bulb.
4. Reinstall the cover.

Vanity mirror light

CAUTION

Replacing the bulb could cause
burns since the bulb may be very
hot. We recommend that you have
the bulb replaced by your SUBARU
dealer.

Other bulbs

It may be difficult to replace the bulbs.
Have the bulbs replaced by your
SUBARU dealer if necessary.

Maintenance and service/Replacing bulbs

11-51

(434,1)

Replacing battery

The access key fob/transmitter battery
may be discharged under the following
conditions.

The operation of the keyless access

function is unstable.

The operating distance of the remote

keyless entry system is unstable.

The transmitter does not operate prop-

erly when used within the standard dis-
tance.

Replace the battery with a new one.

Safety precautions

CAUTION

Do not let dust, oil or water get on

or in the access key fob/transmit-
ter when replacing battery.

Before replacing the battery, re-

move any static electricity.

Be careful not to touch or damage

the printed circuit board in the
access key fob/transmitter when
replacing the battery.

Be careful not to allow children to

touch the battery and any re-
moved parts; children could

swallow them.

There is a danger of an explosion

if the battery is incorrectly re-
placed. Replace only with the
same or equivalent type of the
battery.

Do not expose batteries to exces-

sive heat such as bright sunlight,
fire or the like.

NOTE

Replace only with the same or

equivalent type of battery recom-
mended by the manufacturer.

Dispose of used batteries according

to local laws.

Mount the battery in the correct

orientation to prevent fluid leakage.
Be careful not to bend the terminals. It
may result in a malfunction.

It is recommended that the battery

should be replaced by a SUBARU deal-
er.

Use a new battery.

After replacing the battery, confirm

that the access key fob/transmitter
functions properly.

Replacing battery of access
key fob

CAUTION

When removing or reinstalling the
access key fob cover, make sure that
the plastic part does not come off or
become misaligned.

Battery: Button battery CR2032 or
equivalent

Release button

Emergency key

1. Take out the emergency key.

Maintenance and service/Replacing battery

11-52

(435,1)

2. Wrap a flat-head screwdriver with vinyl
tape or a cloth, and insert it in the gap to
remove the cover.

3. Take out the battery using a flat-head
screwdriver with vinyl tape or a cloth.

4. Insert a new battery with its positive (+)
side facing upward as shown in the figure.

5. Attach the cover to the access key fob
by fitting the projections and recesses
together.
6. Reinstall the emergency key.

Replacing transmitter battery

1. Open the key head using a flat-head
screwdriver.

2. Remove the transmitter case from the
key head.

– CONTINUED –

Maintenance and service/Replacing battery

11-53

(436,1)

3. Open the transmitter case by releasing
the hooks.

Negative (−) side facing up

4. Replace the old battery with a new
battery (type

CR1620

or equivalent) mak-

ing sure to install the new battery with the

negative (−) side facing up.
5. Put together the transmitter case by
fitting the hooks on the case.
6. Reinstall the transmitter case in the
key head.
7. Refit the removed half of the key head.

After the battery is replaced, the trans-
mitter must be synchronized with the
remote keyless entry system’s control
unit. Press either the “ ” or “

” button

six times to synchronize the unit.

Maintenance and service/Replacing battery

11-54

(437,1)

Specifications........................................................ 12-2

Dimensions........................................................... 12-2
Engine .................................................................. 12-3
Fuel ...................................................................... 12-3
Engine oil ............................................................. 12-4
Manual transmission, front differential and rear

differential gear oil .............................................. 12-6

Fluids ................................................................... 12-7
Engine coolant...................................................... 12-7
Electrical system .................................................. 12-8

Tires..................................................................... 12-8
Temporary spare tires ........................................... 12-9
Brake disc ............................................................ 12-9

Fuses and circuits .............................................. 12-10

Fuse panel located in the passenger

compartment ................................................... 12-10

Fuse panel located in the engine compartment ... 12-12

Bulb chart............................................................ 12-14
Vehicle identification .......................................... 12-16

Specifications

(438,1)

Specifications

These specifications are subject to change without notice.

Dimensions

in (mm)

Overall length

180.9 (4,595)

Overall width

70.7 (1,795)

Overall height

58.1 (1,475)

Wheel base

104.3 (2,650)

Tread

Front

60.2 (1,530)

Rear

60.6 (1,540)

Ground clearance

4.9 (125)

Specifications/Specifications

12-2

(439,1)

Engine

Model

STI

Except STI

Engine model

EJ25 (2.5 L, DOHC, turbo)

FA20 (2.0 L, DOHC, turbo)

Engine type

Horizontally opposed, liquid cooled 4 cylinder, 4-stroke petrol engine

Displacement cu-in (cc)

150 (2,457)

122 (1,998)

Bore

Stroke in (mm)

3.92

3.11 (99.5

79.0)

3.39

3.39 (86.0

86.0)

Compression ratio

8.2 : 1

10.6 : 1

Firing order

1 – 3 – 2 – 4

Fuel

NOTE

The engine is designed to operate using unleaded gasoline.

Model

Fuel

Fuel tank capacity

STI

93 AKI (98 RON) or higher

15.9 US gal (60 liters, 13.2 Imp gal)

Except STI

91 AKI (95 RON) or higher

*1: If unleaded gasoline with an octane rating of 93 AKI (98 RON) is not available, unleaded gasoline with an octane rating of 91 AKI (95 RON) may be

used with no detriment to engine durability or driveability.

*2: If unleaded gasoline with an octane rating of 91 AKI (95 RON) is not available, unleaded gasoline with an octane rating of 87 AKI (90 RON) or higher

may be used.

– CONTINUED –

Specifications/Specifications

12-3

(440,1)

Engine oil

For the checking, adding and replacing procedure or other details, refer to “Engine oil”

11-13.

NOTE

Have the procedure for changing the engine oil and oil filter performed by a properly-trained expert. It is recommended that
you have this service performed by your SUBARU dealer.

Approved engine oil

Always use the SUBARU approved engine oil. For further details, please contact your SUBARU dealer.
If the approved engine oil is unavailable, use the alternative engine oil described on the next page.

Specifications/Specifications

12-4

(441,1)

Alternative engine oil

If the SUBARU approved oil is unavailable, the following alternative oil can be used.

NOTE

Each quantity indicated here is only a guideline. The necessary quantity for replacement may differ slightly depending on

the temperature and other factors.

In choosing an oil, you want the proper quality and viscosity, as well as one that will enhance fuel economy. Oils of lower

viscosity provide better fuel economy. However, in hot weather, oil of higher viscosity is required to properly lubricate the
engine. The following table lists the recommended viscosities and applicable temperatures.

When adding oil, you may use different brands together as long as they are the same API classification and SAE viscosity

as those recommended by SUBARU.

Oil grade

SAE viscosity No. and

applicable temperature

Engine oil capacity

API (American Petroleum Insti-
tute) classification

with the

words “RESOURCE CONSER-
VING” or

SN PLUS

with the

words “RESOURCE CONSER-
VING”

ILSAC (International Lubricant
Specification Advisory Commit-
tee)

GF-5

, which can be identi-

fied with the ILSAC certification
mark (Starburst mark)

5W-30 synthetic

oil is the required oil for

optimum engine performance and pro-
tection. Conventional oil may be used if
synthetic oil is unavailable.

*: If 5W-30 synthetic oil is not available,

5W-40 conventional oil may be used if
replenishment is needed but should
be changed to 5W-30 synthetic oil at
the next oil change.

STI:

· Adding the oil from L to F level:

1.1 US qt (1.0 liter, 0.9 Imp qt)

· Changing the oil and oil filter:

4.5 US qt (4.3 liters, 3.8 Imp qt)

· Changing the oil:

4.2 US qt (4.0 liters, 3.5 Imp qt)

Except STI:

· Adding the oil from L to F level:

1.1 US qt (1.0 liter, 0.9 Imp qt)

· Changing the oil and oil filter:

5.4 US qt (5.1 liters, 4.5 Imp qt)

· Changing the oil:

5.2 US qt (4.9 liters, 4.3 Imp qt)

– CONTINUED –

Specifications/Specifications

12-5

(442,1)

Manual transmission, front differential and rear differential gear oil

Oil

Manual transmission oil

Front differential gear oil (CVT

models)

Rear differential gear oil

Oil
grade

STI

API classification GL-5

(75W-90)*

—

API classification GL-5

Except STI

SUBARU Extra MT*

API classification GL-5

(75W-90)*

SUBARU Extra MT*

API classification GL-5
(75W-90)

SAE viscosity No. and
applicable tempera-
ture

—

75W-90*

*: Recommended

Oil ca-
pacity*

STI

4.3 US qt (4.1 liters, 3.6 Imp qt)

—

1.1 US qt (1.0 liter, 0.9 Imp qt)

Except STI 3.5 US qt (3.3 liters, 2.9 Imp qt)

1.5 US qt (1.4 liters, 1.2 Imp qt)

0.8 US qt (0.8 liters, 0.7 Imp qt)

Remarks*

“Manual transmission oil”

11-21

“Front differential gear oil (CVT
models) and rear differential
gear oil”

11-22

“Front differential gear oil (CVT models) and rear
differential gear oil”

11-22

*1: The indicated oil quantity is only a guideline. The necessary quantity for replacement may differ slightly depending on the temperature and other

factors. Check the oil level after refilling the gearbox with oil.

*2: For more details about maintenance and service, refer to the indicated section.
*3: The vehicle is filled at the factory with this oil.
*4: You may use this type of manual transmission oil. However, using this type of oil will detract from driveability and fuel efficiency.

Specifications/Specifications

12-6

(443,1)

Fluids

Fluid

Fluid type*

Fluid capacity*

Remarks*

Continuously variable transmission
fluid (CVT models)

Consult your SUBARU dealer.

13.1 US qt (12.4 liters, 10.9 Imp qt)

“Continuously variable trans-

mission fluid”

11-22

Brake fluid

FMVSS No. 116, DOT 3 or DOT 4 brake
fluid

—

“Brake fluid”

11-23

Clutch fluid (MT models)

FMVSS No. 116, DOT 3 or DOT 4 brake
fluid

—

“Clutch fluid (MT models)”

11-

Power steering fluid (STI)

· SUBARU ATF
· “Dexron III” Type Automatic Transmis-

sion Fluid

· IDEMITSU ATF HP

0.7 US qt (0.7 liter, 0.6 Imp qt)

“Power steering fluid (STI)”

11-22

*1: Use one of the indicated types of fluid.
*2: The indicated fluid quantity is only a guideline. The necessary quantity for replacement may differ slightly depending on the temperature and other

factors.

*3: For more details about maintenance and service, refer to the indicated section.

Engine coolant

Vehicle model

Coolant capacity

Coolant type

STI

8.2 US qt (7.7 liters, 6.8 Imp qt)

SUBARU SUPER COOLANT

Except STI

MT models

8.6 US qt (8.1 liters, 7.2 Imp qt)

CVT models

8.8 US qt (8.3 liters, 7.3 Imp qt)

The indicated coolant quantity is only a guideline. The necessary quantity for replacement may differ slightly depending on the temperature and other
factors. For more details about maintenance and service, refer to “Cooling system”

11-16.

– CONTINUED –

Specifications/Specifications

12-7

(444,1)

Electrical system

Battery type

75D23L

Alternator

STI

12 V-110 A

Except STI

12 V-130 A

Spark plugs

STI

ILFR7H (NGK)

Except STI

ILKAR8H6 (NGK)

Tires

Tire size

STI

—

245/40R18 97W*

245/35R19 89W

Except STI

235/45R17 94W*

245/40R18 97W

—

Wheel size

8 1/2J

Pressure

Front

33 psi (230 kPa, 2.3 kgf/cm

)

Rear

32 psi (220 kPa, 2.2 kgf/cm

)

Wheel nut tightening torque

89 lbf·ft (120 N·m, 12 kgf·m)*

*1: Except for Mexico
*2: This torque is equivalent to applying approximately 88 to 110 lbf (40 to 50 kgf) at the end of the wheel nut wrench. If you have tightened the wheel nuts

by yourself, have the tightening torque checked at the nearest automotive service facility as soon as possible. For the wheel nut tightening procedure,
refer to “Changing a flat tire”

9-4.

Specifications/Specifications

12-8

(445,1)

Temporary spare tires

For U.S. and Canada

For Mexico

Temporary spare tire size

T145/70D17

T135/70D18

205/50R17

205/45R18

Temporary spare tire inflation pressure
(recommended cold tire inflation pressure)

60 psi (420 kPa, 4.2 kgf/cm

)

33 psi (230 kPa, 2.3 kgf/cm

)

38 psi (260 kPa, 2.6 kgf/cm

)

Wheel nut tightening torque

89 lbf·ft (120 N·m, 12 kgf·m)*

*1: This torque is equivalent to applying approximately 88 to 110 lbf (40 to 50 kgf) at the end of the wheel nut wrench. If you have tightened the wheel nuts

by yourself, have the tightening torque checked at the nearest automotive service facility as soon as possible.

*2: For the wheel nut tightening procedure, refer to “Changing a flat tire”

9-4.

Brake disc

If you need information on the usage limit value of brake discs and the method for measuring them, consult your SUBARU dealer.

Specifications/Specifications

12-9

(446,1)

Fuses and circuits

Fuse panel located in the passenger compartment

Fuse

panel

Fuse

rating

Circuit

20 A

R.FOG TRAIL

7.5 A

METER IG

15 A

DOOR LOCK

10 A

IG2

Empty

7.5 A

MIR

15 A

UNIT+B

7.5 A

STOP

7.5 A

WIPER DEICE

7.5 A

D-OP+B

7.5 A

TURN IG

15 A

UNIT IG1

20 A

12 V PLUG

10 A

TAIL CLEARANCE

10 A

BKUP+B

7.5 A

ILM

15 A

SEAT HTR

10 A

LAMP IG

Empty

10 A

CIGAR

10 A

START

7.5 A

A/C IG

Specifications/Fuses and circuits

12-10

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