2016 SUBARU WRX brakes

but it turns off while driving.
. The warning light illuminates during
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 prop-
erly, do not drive the vehicle.
Have your vehicle towed to the
nearest SUBARU dealer for re-
pair.
. If the brake system warning light
illuminates, the electronic park- ing brake system may be mal-
functioning. Immediately stop
your vehicle in a safe location,
use tire stops under the tires to
prevent the vehicle from moving
and contact your SUBARU deal-
er. For details, refer to “ Electro-
nic parking brake (models with
electronic parking brake sys-
tem) ” F 7-44.
NOTE . 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 may
illuminate 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.
! 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.Instruments and controls/Warning and indicator lights
– CONTINUED –3-21

Instruments and controls/Warning and indicator lights
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
during driving.
Even if the EBD system fails, the conven-
tional braking system will still function.
However, the rear wheels will be more
prone to locking when the brakes are
applied harder than usual and the vehi-
cle ’ s motion may therefore become some-
what 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 illumi-
nates when the electronic parking brake
system is malfunctioning. If the warning light illuminates, promptly park in a safe
location 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) ” F 7-44.
! Frequent operation warning
The brake system warning light illumi-
nates 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.
NOTE The vacuum pump system assists the
boost pressure when driving at high
altitudes while the engine is cold.3-22

& 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 prop-
erly, do not drive the vehicle.
Have your vehicle towed to the
nearest SUBARU dealer for re-
pair. . 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
moving and contact your
SUBARU dealer. For details, refer
to “ Electronic parking brake
(models with electronic parking
brake system) ” F 7-44.
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 pressed to apply the electro-
nic parking brake while the ignition
switch is in the “ LOCK ” / “ OFF ” posi-
tion, the electronic parking brake in-
dicator light illuminates, remains illu-
minated 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 electronic parking 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 pulled. For details,
refer to “ Electronic parking brake (models
with electronic parking brake system) ”
F 7-44.Instruments and controls/Warning and indicator lights
– CONTINUED –3-23

Starting and operating/Manual transmission
& Shifting speeds! Recommended shifting speeds
The best compromise between fuel econ-
omy and vehicle performance during
normal driving is ensured by shifting up
at the speeds listed in the following table. Shift up mph (km/h)
1st to 2nd 15 (24)
2nd to 3rd 25 (40)
3rd to 4th 40 (64)
4th to 5th 45 (72)
5th to 6th 50 (80)
! Shift-up indicator (STI)
The shift-up indicator appears to inform the driver about the upshift timing.
The shift-up indicator can be activated or
deactivated. For details, refer to “ Shift-up
indicator (STI) ” F 3-34.
! Maximum allowable speeds
The following table shows the maximum
speeds that are possible with each differ-
ent gear. The tachometer ’ s needle will
enter the red area if these speeds are
exceeded.
With the exception of cases where sudden
acceleration is required, the vehicle
should not be driven with the tachometer ’ s
needle inside the red area. Failure to
observe this precaution can lead to
excessive engine wear and poor fuel
economy.
Gear STI
mph (km/h) Except STI
mph (km/h)
1st 31 (50) 31 (49)
2nd 51 (82) 55 (88)
WARNING
When shifting down a gear, ensure
that the vehicle is not travelling at a
speed exceeding the Maximum Al-
lowable Speed for the gear which is
about to be selected. Failure to
observe this precaution can lead to 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.
NOTE Never exceed the posted speed limit.
& Driving tips 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 a
lower gear before the engine starts to
labor.
On steep downgrades, downshift the
transmission to 5th, 4th, 3rd or 2nd gear7-18

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) WARNINGAlways 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.
CAUTION
. All the indicators will flash in the
event that the driver ’ s control
center differential has a malfunc- tion. Have the vehicle inspected
by your SUBARU dealer.
. If a malfunction occurs in the
vehicle (for example, when the
rear differential oil temperature
warning light illuminates), all of
the indicators may disappear and
the setting value for the initial
limited slip differential (LSD) tor-
que of the driver ’ s control center
differential (C.DIFF/DCCD) may
be cancelled. However, it does
not indicate a malfunction of the
C.DIFF/DCCD itself.
The driver ’ s control center differential
allows you to freely change the degree
of limitation of the differential action
(limited slip differential (LSD) torque) of
your vehicle ’ s center differential.
By using the center differential control
switch, you can set an initial LSD torque to
match the road surface conditions, driving
conditions and your driving style.Starting and operating/Driver ’ s Control Center Differential (C.DIFF/DCCD) (STI)
– CONTINUED –7-19

Braking & Braking tips WARNINGNever 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 cause a 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 diag-
onally 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, result-
ing 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 dis-
tance will increase. ! Brake assist system
WARNINGDo 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.
CAUTIONWhen 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.
NOTE When you depress the brake pedal
strongly or suddenly, the following
phenomena occur. However, even
though these occur, they do not indi- Starting and operating/Braking
– CONTINUED –7-35

Starting and operating/ABS (Anti – lock Brake System)
cate any malfunctions, and the brake
assist system is operating properly.
. You might feel that the brake pedal
is applied by lighter force and gener-
ates a greater braking force.
. You might hear an ABS operating
noise from the engine compartment.
& Disc brake pad wear warning
indicators
The 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. ABS (Anti-lock Brake Sys-
tem) The ABS prevents the lock-up of wheels
which may occur during sudden braking or
braking on slippery road surfaces. This
helps prevent the loss of steering control
and directional stability caused by wheel
lock-up.
When the ABS is operating, you may hear
a chattering noise or feel a slight vibration
in the brake pedal. This is normal when
the ABS operates.
The ABS will not operate when the vehicle
speed is below approximately 6 mph (10
km/h).
WARNING
Always use the utmost care in
driving – overconfidence because
you are driving a vehicle with the
ABS could easily lead to a serious
accident.
CAUTION
. The ABS does not always de-
crease stopping distance. You
should always maintain a safe following distance from other
vehicles.
. When driving on badly surfaced
roads, gravel roads, icy roads, or
over deep newly fallen snow,
stopping distances may be long-
er for a vehicle with the ABS than
one without. When driving under
these conditions, therefore, re-
duce your speed and leave ample
distance from other vehicles.
. When you feel the ABS operating,
you should maintain constant
brake pedal pressure. Do not
pump the brake pedal since
doing so may defeat the opera-
tion of the ABS system.
& ABS self-check Just after the vehicle is started, you may
feel on the brake pedal a vibration similar
to when the ABS operates, and you may
also hear the sound of the ABS working
from the engine compartment. This is
caused by an automatic functional test of
the ABS being carried out and does not
indicate any abnormal condition.7-36

& ABS warning light Refer to “ ABS warning light ” F 3-20.
Electronic Brake Force Dis-
tribution (EBD) system The 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
malfunctions
Brake and ABS warning light
If 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
during 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.Starting and operating/Electronic Brake Force Distribution (EBD) system
– CONTINUED –7-37