2018 SUBARU WRX brakes

(163,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
.The warning light illuminates while
driving, but it turns off immediately and
remains off.
When driving with an insufficient battery
voltage such as when the engine is jump
started, the ABS warning light may illumi-
nate. This is due to the low battery voltage
and does not indicate a malfunction. When
the battery becomes fully charged, the
light will turn off.&Brake system
warning light
WARNING
.Driving with the brake system
warning light on is dangerous.
This indicates your brake system
may not be working properly. If
the light remains illuminated,
have the brakes inspected by a
SUBARU dealer immediately.
.If at all in doubt about whether the
brakes are operating properly, do
not drive the vehicle. Have your
vehicle towed to the nearest
SUBARU dealer for repair.
.For models with the electronic
parking brake: If the brake sys-
tem warning light illuminates, the
electronic parking brake systemmay be malfunctioning. Immedi-
ately stop your vehicle in a safe
location, use tire stops under the
tires to prevent the vehicle from
moving and contact your
SUBARU dealer. For details, refer
to“Electronic parking brake
(models with electronic parking
brake system)”F7-43.
NOTEFor models with the electronic parking
brake:
.Even if the brake system warning
light illuminates, if the warning light
behavior is as described in the follow-
ing examples, the electronic parking
brake system is not malfunctioning.
–The warning light turns off when
the electronic parking brake is ap-
plied or released.
–The warning light turns off when
the ignition switch is turned to the
“ON”position again.
.The brake system warning light may
illuminate immediately after the engine
is started. However, it is not malfunc-
tioning if the warning light turns off
after the electronic parking brake is
released.
.The brake system warning light mayilluminate after the electronic parking
brake is frequently applied and re-
leased. However, the electronic parking
brake system is not malfunctioning if
the light turns off for a short period of
time.
.When the engine is started while the
electronic parking brake is applied/
released, the system may judge an
abnormal situation and the warning
light may illuminate. If the warning light
illuminates, turn the ignition switch
once to the“LOCK/OFF”position and
then restart the engine. Then, apply/
release the electronic parking brake. If
the warning light turns off, the system
will be restored.
This light has the following functions.
!Parking brake indicator (models
without electronic parking brake
system)
This light illuminates with the parking
brake applied while the ignition switch is
in the“ON”position. It turns off when the
parking brake is fully released.
–CONTINUED–
Instruments and controls/Warning and indicator lights
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3

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!Brake fluid level warning
This light illuminates when the brake fluid
level has dropped to near the“MIN”level of
the brake fluid reservoir with the ignition
switch in the“ON”position and with the
parking brake fully released.
If the brake system warning light should
illuminate while driving (with the parking
brake fully released and with the ignition
switch positioned in“ON”), it could be an
indication of leaking of brake fluid or worn
brake pads. If this occurs, immediately
stop the vehicle at the nearest safe place
and check the brake fluid level. If the fluid
level is below the“MIN”mark in the
reservoir, do not drive the vehicle. Have
the vehicle towed to the nearest SUBARU
dealer for repair.
!Electronic Brake Force Distribution
(EBD) system warning
The brake system warning light also
illuminates if a malfunction occurs in the
EBD system. In that event, it illuminates
together with the ABS warning light.
The EBD system may be malfunctioning if
the brake system warning light and ABS
warning light illuminate simultaneously
while driving.
Even if the EBD system fails, the conven-
tional braking system will still function.
However, the rear wheels will be moreprone to locking when the brakes are
applied harder than usual and the vehicle’s
motion may therefore become somewhat
harder to control.
If the brake system warning light and ABS
warning light illuminate simultaneously,
take the following steps.
1. Stop the vehicle in the nearest safe, flat
place.
2. Shut down the engine, apply the
parking brake and then restart it.
3. Release the parking brake. If both
warning lights turn off, the EBD system
may be malfunctioning. Drive carefully to
the nearest SUBARU dealer and have the
system inspected.
4. If both warning lights illuminate again
and remain illuminated after the engine
has been restarted, shut down the engine
again, apply the parking brake, and check
the brake fluid level.
5. If the brake fluid level is not below the
“MIN”mark, the EBD system may be
malfunctioning. Drive carefully to the
nearest SUBARU dealer and have the
system inspected.
6. If the brake fluid level is below the
“MIN”mark, DO NOT drive the vehicle.
Instead, have the vehicle towed to the
nearest SUBARU dealer for repair.!Electronic parking brake system
warning (models with electronic
parking brake system)
The brake system warning light illuminates
when the electronic parking brake system
is malfunctioning. If the warning light
illuminates, promptly park in a safe loca-
tion as soon as possible and contact your
SUBARU dealer.
The brake system warning light remains
illuminated when the parking brake cannot
be released even if the parking brake
switch is pushed. For details, refer to
“Electronic parking brake (models with
electronic parking brake system)”F7-43.
!Frequent operation warning
The brake system warning light illuminates
and a chirp sound will be heard if the
parking brake switch is operated too
frequently. In this case, the operation of
the parking brake switch is restricted to
protect the electronic parking brake sys-
tem.
!Vacuum pump system warning (ex-
cept STI)
This light illuminates when a malfunction is
detected in the vacuum pump system.
NOTEThe vacuum pump system assists the
boost pressure when driving at high
Instruments and controls/Warning and indicator lights
3-22

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
altitudes while the engine is cold.&Electronic parking
brake indicator light
(models with electronic
parking brake system)!Parking brake indicator
The light illuminates with the parking brake
applied while the ignition switch is in the
“ON”position. It turns off when the parking
brake is fully released.
!Electronic parking brake system
warning
WARNING
.When you release the electronic
parking brake while the engine is
running, the electronic parking
brake indicator light will turn off.
However, if the light still illumi-
nates, stop the vehicle in a safe
place immediately and have the
system inspected by a SUBARU
dealer.
.If at all in doubt about whether the
brakes are operating properly, do
not drive the vehicle. Have your
vehicle towed to the nearest
SUBARU dealer for repair..If the electronic parking brake
indicator light flashes, the elec-
tronic parking brake system may
be malfunctioning. Immediately
stop your vehicle in a safe loca-
tion, use tire stops under the tires
to prevent the vehicle from mov-
ing and contact your SUBARU
dealer. For details, refer to“Elec-
tronic parking brake (models with
electronic parking brake sys-
tem)”F7-43.
NOTE.When the ignition switch is turned to
the“LOCK”/“OFF”position with the
electronic parking brake applied, the
electronic parking brake indicator light
remains illuminated for approximately
30 seconds and then turns off.
.When the electronic parking brake
switch is pulled to apply the electronic
parking brake while the ignition switch
is in the“LOCK”/“OFF”position, the
electronic parking brake indicator light
illuminates, remains illuminated for
approximately 30 seconds and then
turns off.
.Even if the electronic parking brake
indicator light flashes, if the warning
light behavior is as described in the
following examples, the electronicparking brake system is not malfunc-
tioning.
–The indicator light turns off when
the electronic parking brake is re-
leased.
.The electronic parking brake indica-
tor light may flash immediately after the
engine is started. However, it is not
malfunctioning if the indicator light
turns off after the electronic parking
brake is released.
.The electronic parking brake indica-
tor light may flash after the electronic
parking brake is frequently applied and
released. However, the electronic park-
ing brake system is not malfunctioning
if the light turns off for a short period of
time.
The electronic parking brake indicator light
flashes when the electronic parking brake
system is malfunctioning. If the indicator
light flashes, promptly park in a safe
location as soon as possible and contact
your SUBARU dealer.
The electronic parking brake indicator light
remains illuminated when the parking
brake cannot be released even if the
parking brake switch is pushed. For de-
tails, refer to“Electronic parking brake
(models with electronic parking brake
system)”F7-43.
–CONTINUED–
Instruments and controls/Warning and indicator lights
3-23
3

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Fuel..........................................................................7-3
Fuel requirements.................................................. 7-3
Fuel filler lid and cap............................................. 7-5
State emission testing (U.S.only).........................7-7
Preparing to drive...................................................7-8
Starting and stopping theengine..........................7-9
General precautions when starting/stopping
engine................................................................. 7-9
Models without push-button start systems............7-10
Models with push-button start systems ................. 7-11
Remote engine start system (dealer option)...........7-14
Manual transmission............................................7-16
Shifting speeds.....................................................7-17
Driving tips...........................................................7-18
Driver’s Control Center Differential
(C.DIFF/DCCD) (STI)...........................................7-18
To change mode of driver’s control center
differential..........................................................7-19
Auto mode............................................................7-20
Manual mode........................................................7-21
Temporary release................................................7-22
Continuously variable transmission....................7-23
Select lever...........................................................7-24
Selection of manual mode.....................................7-25
Shift lock function.................................................7-27
Driving tips...........................................................7-28
SI-DRIVE (if equipped)..........................................7-28
Intelligent (I) mode................................................7-28
Sport (S) mode.....................................................7-29
Sport Sharp (S#) mode..........................................7-29SI-DRIVE switch....................................................7-30
Limited slip differential (LSD)(STI).....................7-31
Power steering......................................................7-31
STI .......................................................................7-31
Except STI............................................................7-32
Braking..................................................................7-33
Braking tips..........................................................7-33
Brake system.......................................................7-33
Disc brake pad wear warning indicators................7-34
High performance brake system (STI)...................7-34
Red caliper with sports brake pad (if equipped) .... 7-34
ABS (Anti-lock BrakeSystem).............................7-35
ABS self-check.....................................................7-35
ABS warning light.................................................7-35
Electronic Brake Force Distribution (EBD)
system................................................................7-36
Steps to take if EBD system malfunctions .............7-36
Vehicle Dynamics Controlsystem......................7-37
Vehicle Dynamics Control system monitor ............7-39
Vehicle Dynamics Control OFF switch...................7-39
Tire pressure monitoring system (TPMS)
(U.S.-spec. models)...........................................7-40
Parking your vehicle............................................7-42
Parking brake (models without electronic parking
brake system)....................................................7-42
Electronic parking brake (models with electronic
parking brake system).......................................7-43
Parking tips..........................................................7-45
Auto Vehicle Holdfunction..................................7-46
To turn on/off the Auto Vehicle Hold function........7-47
To operate the Auto Vehicle Hold function ............7-48
Starting and operating
7

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
engine over-revving and this in turn
can result in engine damage.
In addition, sudden application of
engine brakes when the vehicle is
travelling on a slippery surface can
lead to wheel locking; as a conse-
quence, control of the vehicle may
be lost and the risk of an accident
increased.NOTENever exceed the posted speed limit.&Driving tips
NOTEIf the accelerator and brake pedals are
depressed at the same time, driving
torque may be restrained. This is not a
malfunction.
Do not drive with your foot resting on the
clutch pedal and do not use the clutch to
hold your vehicle at a standstill on an
upgrade. Either of those actions may
cause clutch damage.
Do not drive with your hand resting on the
shift lever. This may cause wear on the
transmission components.
When it is necessary to reduce vehicle
speed due to slow traffic, turning corners,
or driving up steep hills, downshift to alower gear before the engine starts to
labor.
On steep downgrades, downshift the
transmission to 5th, 4th, 3rd or 2nd gear
as necessary; this helps to maintain a safe
speed and to extend brake pad life.
In this way, the engine provides a braking
effect. Remember, if you“ride”(over use)
the brakes while descending a hill, they
may overheat and not work properly.
The engine may, on rare occasions, knock
when the vehicle rapidly accelerates or
rapidly pulls away from a standstill. This
phenomenon is not an indication of a
problem in your vehicle.
Driver’s Control Center Dif-
ferential (C.DIFF/DCCD) (STI)
WARNING
Always use the utmost care when
driving. Being overconfident be-
cause you are driving a vehicle with
a driver’s control center differential
could easily lead to a serious acci-
dent.
Starting and operating/Driver’s Control Center Differential (C.DIFF/DCCD) (STI)
7-18

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Braking&Braking tips
WARNING
Never rest your foot on the brake
pedal while driving. This can cause
dangerous overheating of the
brakes and needless wear on the
brake pads and linings.
!When the brakes get wet
When driving in rain or after washing the
vehicle, the brakes may get wet. As a
result, brake stopping distance will be
longer. To dry the brakes, drive the vehicle
at a safe speed while lightly depressing the
brake pedal to heat up the brakes.
!Use of engine braking
Remember to make use of engine braking
in addition to foot braking. When descend-
ing a grade, if only the foot brake is used,
the brakes may start working improperly
because of brake fluid overheating,
caused by overheated brake pads. To help
prevent this, shift into a lower gear to get
stronger engine braking.
!Braking when a tire is punctured
Do not depress the brake pedal suddenly
when a tire is punctured. This could causea loss of control of the vehicle. Keep
driving straight ahead while gradually
reducing speed. Then slowly pull off the
road to a safe place.
&Brake system!Two separate circuits
Your vehicle has two separate circuit brake
systems. Each circuit works diagonally
across the vehicle. If one circuit of the
brake system should fail, the other half of
the system still works. If one circuit fails,
the brake pedal will go down much closer
to the floor than usual and you will need to
press it down much harder. And a much
longer distance will be needed to stop the
vehicle.
!Brake booster
The brake booster uses engine manifold
vacuum to assist braking force. Do not turn
off the engine while driving because that
will turn off the brake booster, resulting in
poor braking power.
The brakes will continue to work even
when the brake booster completely stops
functioning. If this happens, however, you
will have to depress the pedal much harder
than normal and the braking distance will
increase.!Brake assist system
WARNING
Do not be overconfident about the
brake assist. It is not a system that
brings more braking ability to the
vehicle beyond its braking capabil-
ity. Always use the utmost care
when driving regarding vehicle
speed and safe distance.
CAUTION
When you need to brake suddenly,
continue depressing the brake pedal
strongly to obtain the effect of the
brake assist.
Brake assist is a driver assistance system.
It assists the brake power when the driver
cannot depress the brake pedal strongly
and the brake power is insufficient.
Brake assist generates the brake power
according to the speed at which the driver
depresses the brake pedal.NOTEWhen you depress the brake pedal
strongly or suddenly, the following
phenomena occur. However, even
though these occur, they do not indi-
–CONTINUED–
Starting and operating/Braking
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7

(396,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
cate any malfunctions, and the brake
assist system is operating properly.
.You might feel that the brake pedal is
applied by lighter force and generates a
greater braking force.
.You might hear an ABS operating
noise from the engine compartment.&Disc brake pad wear warning
indicatorsThe disc brake pad wear warning indica-
tors on the disc brakes give a warning
noise when the brake pads are worn.
If a squeaking or scraping noise is heard
from the disc brakes while braking, im-
mediately have your vehicle checked by
your SUBARU dealer.
&High performance brake sys-
tem (STI)Your vehicle is equipped with large, high
performance brake pads that provide
optimum braking force under various driv-
ing conditions. The brake pads have the
following characteristics.
Brake noises
The brake pads are made of iron-based
material. Therefore, unusual noise may be
heard when depressing the brake pedal
slightly before stopping completely. How-
ever, this does not indicate a malfunction.
Discoloration
Frequent severe driving, such as repeated
driving on sharp uphill or downhill grades,
can cause discoloration of the paint on the
brake calipers. The discoloration will not
affect the braking performance.
Stuck brake pads
.If the vehicle is left parked for an
extended period of time with the brake
system wet, the iron in the brake pads may
form rust and cause the brake pads and
disc rotors to stick together. This may
result in noise or vibration while driving. If
this occurs, fully depress the brake pedal
several times to free the brake pads.
.If the vehicle is left parked for an
extended period of time in a cold tempera-ture, the brake pads and disc rotors may
be frozen and stuck together. In this case,
it may be difficult to start the vehicle.
Brake dust
Due to the material used for the brake
pads, the wheels may become covered in
brake dust. This is not a malfunction, and
will not affect the brake performance.
&Red caliper with sports brake
pad (if equipped)Brake noises
The brake pads are made of iron-based
material. Therefore, unusual noise may be
heard when depressing the brake pedal
slightly before stopping completely. How-
ever, this does not indicate a malfunction.
Brake dust
Due to the material used for the brake
pads, the wheels may become covered in
brake dust. This is not a malfunction, and
will not affect the brake performance.
Starting and operating/Braking
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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Electronic Brake Force Dis-
tribution (EBD) systemThe EBD system maximizes the effective-
ness of the brakes by allowing the rear
brakes to supply a greater proportion of the
braking force. It functions by adjusting the
distribution of braking force to the rear
wheels in accordance with the vehicle’s
loading condition and speed.
The EBD system is an integral part of the
ABS and uses some of the ABS compo-
nents to perform its function of optimizing
the distribution of braking force. If any of
the ABS components used by the EBD
system malfunction, the EBD system also
stops working.
When the EBD system is operating, you
may hear a chattering noise or feel a slight
vibration in the brake pedal. This is normal
and does not indicate a malfunction.
&Steps to take if EBD system
malfunctionsBrake and ABS warning lightIf a malfunction occurs in the EBD system,
the system stops working and the brake
system warning light and ABS warning
light illuminate simultaneously.
The EBD system may be malfunctioning if
the brake system warning light and ABS
warning light illuminate simultaneously
while driving.
Even if the EBD system malfunctions, the
conventional braking system will still func-
tion. However, the rear wheels will be more
prone to locking when the brakes are
applied harder than usual and the vehicle’s
motion may therefore become somewhat
harder to control.If the brake system warning light and ABS
warning light illuminate simultaneously,
take the following steps.
1. Stop the vehicle in the nearest safe, flat
location.
2. Apply the parking brake and turn off the
engine.
3. Restart the engine.
4. Release the parking brake.
Even if both warning lights turn off:
The EBD system may be malfunctioning.
Drive carefully to the nearest SUBARU
dealer and have the system inspected.
If both warning lights illuminate again
and remain illuminated after restarting
the engine:
1. Turn off the engine again.
2. Apply the parking brake.
3. Check the brake fluid level. For details
about checking the brake fluid level, refer
to“Checking the fluid level”F11-24.
.If the brake fluid level is not below the
“MIN”mark, the EBD system may be
malfunctioning. Drive carefully to the
nearest SUBARU dealer and have the
system inspected.
.If the brake fluid level is below the“MIN”
mark, DO NOT drive the vehicle. Instead,
have the vehicle towed to the nearest
Starting and operating/Electronic Brake Force Distribution (EBD) system
7-36