brakes SUBARU WRX 2018 User Guide

(406,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
function”F7-27.
–Use tire stops under the tires
to prevent the vehicle from
moving.
.Never drive with the parking
brake applied. Doing so will
cause unnecessary wear on the
brake linings. Before driving off,
always make sure that the park-
ing brake has been released and
the brake system warning light
has turned off.
Your vehicle is equipped with an electronic
parking brake. You can apply/release the
parking brake by operating the parking
brake switch.
To apply:Depress the brake pedal and
pull up the parking brake switch.
To release:Press the parking brake
switch firmly while the ignition switch is in
the“ON”position and the brake pedal is
depressed.
When the parking brake is applied while
the ignition switch is in the“ON”position,
the electronic parking brake indicator light
and the indicator light on the parking brake
switch illuminate. Refer to“Brake system
warning light”F3-21.
NOTE.If you press the parking brake switch
under the following conditions, the
parking brake will not be released.
–The ignition switch is in the
“ACC”or“LOCK”/“OFF”position.
–You are not depressing the brake
pedal.
.The electronic parking brake system
uses motors to apply the parking brake.
Therefore, operating sounds from the
motors will be heard when applying or
releasing the parking brake. Make sure
that the motor sounds are heard when
applying or releasing the parking
brake.
.If you operate the parking brake
switch under the following conditions,
a chirp will sound and the electronic
parking brake indicator light will flash.
–when the electronic parking
brake system has a malfunction
–when the electronic parking
brake operation is prohibited tem-
porarily
.When you cannot release the park-
ing brake due to, for example, a system
malfunction, contact your SUBARU
dealer and have your SUBARU dealer
release the parking brake.
.If you stop operating the electronicparking brake switch midway or oper-
ate extremely slowly, the system may
detect an error and turn on the brake
system warning light. However, this
does not indicate a malfunction if the
brake system warning light turns off
after operating the switch.
.When the electronic parking brake
has not been used for a long period of
time, the electronic parking brake may
operate automatically after the ignition
switch is turned to the“LOCK”/“OFF”
position. This occurs due to checking
the proper operation of the electronic
parking brake and does not indicate a
malfunction.
.If you cannot release the electronic
parking brake due to the switch mal-
function, refer to the instructions de-
scribed in“Automatic release function
by accelerator pedal”F7-45.
After activating the electronic parking
brake, you may hear a short sound
several minutes after the electronic
parking brake indicator light illumi-
nates as the system confirms proper
engagement. This sound is different
from the apply and release sound.
This can occur:
–If the brakes are extremely hot.
–If the car is parked on a steep
incline.
Starting and operating/Parking your vehicle
7-44

(428,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
aligned, a system malfunction
may occur, including the inability
to detect vehicles entering the
detection areas. If any strong
shock is applied to the bumper,
be sure to contact your SUBARU
dealer for inspection.
–Do not disassemble the radar
sensors.
NOTEIf the radar sensors require repair or
replacement, or the bumper area
around the radar sensors requires
repair, paintwork or replacement, con-
tact your SUBARU dealer for assis-
tance.
Reverse Automatic Braking
System (if equipped)Reverse Automatic Braking is a system
designed to help avoid collisions or reduce
collision damage when reversing the
vehicle. If a wall or an obstacle is detected
in the reversing direction, the system will
notify the driver with a warning sound and
may activate the vehicle’s brakes auto-
matically.
WARNING
.Reverse Automatic Braking is not
a system intended to replace the
driver’s responsibility to check
surrounding areas for vehicles or
obstacles to avoid a collision.
.The driver is responsible for driv-
ing safely. Always be sure to
check the surroundings visually
when reversing the vehicle.
.There are some cases in which
the vehicle cannot avoid colli-
sion, because the system opera-
tion has limitations. The warning
sound or automatic braking may
be delayed or may not operate at
all even when an obstacle is
present..The system is not designed to
detect people (including chil-
dren), animals or other moving
objects.
.Depending on the vehicle condi-
tion or the surrounding environ-
ment, the sonar sensor’s ability
to detect objects may become
unstable.
NOTEThe Reverse Automatic Braking Sys-
tem records and stores the following
data when automatic braking operates.
It does not record conversations, per-
sonal information or other audio data.
.Distance from the object
.Vehicle speed
.Accelerator pedal operation status
.Brake pedal operation status
.Select lever position
.Outside temperature
.The sensitivity setting of the sonar
sensors
SUBARU and third parties con-
tracted by SUBARU may acquire
and use the recorded data for the
purpose of vehicle research and
development. SUBARU and third
parties contracted by SUBARU will
Starting and operating/Reverse Automatic Braking System
7-66

(429,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
not disclose or provide the acquired
data to any other third party except
under the following conditions.
–The vehicle owner has given his/
her consent.
–The disclosure/provision is
based on a court order or other
legally enforceable request.
–Data that has been modified so
that the user and vehicle cannot be
identified is provided to a research
institution for statistical processing
or similar purposes.
&Reverse Automatic Braking
System overviewThe system detects objects using sonar
sensors installed in the rear bumper. If the
system determines a possible collision
with an object in the reversing direction,
automatic deceleration will be activated.
Also, beeping sounds will activate. If the
vehicle is further reversed, automatic hard
braking will be applied and a continuous
beeping sound will activate.!Detecting range
1) Detecting range (width): Approximately 6
in (15 cm) outside of the vehicle width
2) Range that the system cannot detect:
Approximately 20 in (50 cm) behind the
rear of the vehicle
3) Detecting range (length): Approximately
5 ft (1.5 m) from the rear of the vehicle
WARNING
If your vehicle is trapped on a rail-
road crossing and you are trying to
escape by reversing through the
crossing gate, the system may re-
cognize the crossing gate as an
obstacle and the brakes may acti-
vate. In this case, remain calm and
either continue to depress the accel-
erator pedal or cancel the system. Tocancel the system, refer to“Cancel-
ing the Reverse Automatic Braking
system operation”F7-74.
&Operating conditionsThe Reverse Automatic Braking system
will operate when all of the following
conditions are met.1) EyeSight warning indicator
2) RAB warning indicator
3) RAB OFF indicator.Theignitionswitchisinthe“ON”
position
.The EyeSight warning indicator is off
.The RAB warning indicator is off
.HALT (RAB OFF) indicator is off
.The Reverse Automatic Braking sys-
–CONTINUED–
Starting and operating/Reverse Automatic Braking System
7-67
7

(448,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
–When the vehicle has been left
parked during a snowstorm
Check for snow or ice buildup on
the suspension, disc brakes and
brake hoses underneath the ve-
hicle. If there is caked snow or
ice, remove it, being careful not
to damage the disc brakes and
brake hoses and ABS harness.
When parking for long periods in cold
weather, you should observe the following
tips.
1. For MT models, place the shift lever in
the“1”or“R”position. For CVT models,
place the select lever in the“P”position.
2. Use tire stops under the tires to prevent
the vehicle from moving.
!Refueling in cold weather
To help prevent moisture from forming in
the fuel system and the risk of its freezing,
use of an antifreeze additive in the fuel
tank is recommended during cold weather.
Use only additives that are specifically
designed for this purpose. When an anti-
freeze additive is used, its effect lasts
longer if the tank is refilled whenever the
fuel level reaches half empty.
If your SUBARU is not going to be used for
an extended period, it is best to have thefuel tank filled to capacity.
&Driving on snowy and icy
roadsTo prevent skidding and slipping, avoid
sudden braking, abrupt acceleration, high-
speed driving, and sharp turning when
driving on snowy or icy roads.
Always maintain ample distance between
your vehicle and the vehicle ahead of you
to avoid the need for sudden braking.
To supplement the foot brake, use the
engine brake effectively to control the
vehicle speed. (Shift into a lower gear
when necessary.)
Avoid shifting down abruptly. Such beha-
vior can cause the wheels to lock, possibly
leading to loss of vehicle control.
An anti-lock brake system (ABS) en-
hances your vehicle’s braking perfor-
mance on snowy and icy roads. For
information on braking on slippery sur-
faces, refer to“ABS (Anti-lock Brake
System)”F7-35 and“Vehicle Dynamics
Control system”F7-37.
WARNING
Do not use the cruise control on
slippery roads such as snowy or icy
roads. This may cause loss of vehi-
cle control.
CAUTION
Avoid prolonged continuous driving
in snowstorms. Snow will enter the
engine’sintakesystemandmay
hinder the airflow, which could re-
sult in engine shutdown or even
breakdown.
!Wiper operation when snowing
Before driving in cold weather, make sure
the wiper blade rubbers are not frozen to
the windshield.
If the wiper blade rubbers are frozen to the
windshield, use the defroster and the
temperature set for maximum warmth until
the wiper blade rubbers are completely
thawed. Refer to“Climate control”F4-1.
If your vehicle is equipped with a wiper
deicer, use it. It is helpful to thaw the
windshield wiper blade rubbers. Refer to
“Defogger and deicer”F3-84.
When driving in snow, if frozen snow starts
Driving tips/Winter driving
8-8

(459,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
If you park your vehicle in case of an
emergency............................................................9-2
Temporary spare tire(if equipped)........................9-2
Maintenance tools...................................................9-3
Models with flat tire repair kit................................. 9-4
Models without flat tire repair kit............................ 9-4
Flat tires...................................................................9-5
Changing a flat tire................................................ 9-5
Sealing flat tire (models with flat tire repair kit)...... 9-8
Tire pressure monitoring system (TPMS)
(U.S.-spec. models).............................................9-17
Jump starting........................................................9-18
How to jump start.................................................9-18
Engine overheating...............................................9-20
If steam is coming from the engine
compartment......................................................9-20
If no steam is coming from the engine
compartment......................................................9-20
Towing...................................................................9-21
Towing and tie-down hooks/holes.........................9-21
Using a flat-bed truck...........................................9-24
Towing with all wheels on the ground...................9-25
Electronic parking brake–if the electronic
parking brake cannot be released (models
with electronic parking brakesystem)............9-25
Access key fob–if access key fob does not
operate properly................................................9-26
Locking and unlocking.........................................9-26
Switching power status........................................9-26
Starting engine.....................................................9-27
Moonroof (if equipped)–if the moonroof
does not close...................................................9-28
If your vehicle is involvedin an accident...........9-28
In case of emergency
9

(490,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Exterior care&Washing
CAUTION
TYPE RA: Do not use automatic car
washes. Doing so may damage the
rear wing or its finish.
CAUTION
.When washing the vehicle, the
brakes may get wet. As a result,
the brake stopping distance will
be longer. To dry the brakes, drive
the vehicle at a safe speed while
lightly depressing the brake ped-
al to heat up the brakes.
.Do not wash the engine compart-
ment and area adjacent to it. If
water enters the engine air intake
or electrical parts, it will cause
engine trouble or a malfunction
of electrical equipment.
.When washing the inner fenders,
underbody, bumpers and pro-
truding objects such as exhaust
pipes and exhaust finishers, be
careful to prevent injuries from
contacting sharp ends..Do not use any organic solvents
when washing the surface of the
bulb assembly cover. However, if
a detergent with organic solvents
is used to wash the cover sur-
face, completely rinse off the
detergent with water. Otherwise,
the cover surface may be da-
maged.
NOTEWhen having your vehicle washed in an
automatic car wash, make sure before-
hand that the car wash is of suitable
type.
The best way to preserve your vehicle’s
beauty is frequent washing. Wash the
vehicle at least once a month to avoid
contamination by road grime.
Wash dirt off with a wet sponge and plenty
of lukewarm or cold water. Do not wash the
vehicle with hot water and in direct sun-
light.
Salt, chemicals, insects, tar, soot, tree sap,
and bird droppings should be washed off
by using a light detergent, as required. If
you use a light detergent, make certain
that it is a neutral detergent. Do not use
strong soap or chemical detergents. All
cleaning agents should be promptly rinsedoff the surface and not allowed to dry there.
Rinse the vehicle thoroughly with plenty of
lukewarm water. Wipe the remaining water
off with a chamois or soft cloth. Wear
rubber gloves and use a hand brush when
washing down underbody, inner fenders
and suspension to effectively remove mud
and dirt off.
!Washing the underbody
Chemicals, salts and gravel used for
deicing road surfaces are extremely cor-
rosive, accelerating the corrosion of un-
derbody components, such as the exhaust
system, fuel and brake lines, brake cables,
floor pan and fenders, and suspension.
Thoroughly flush the underbody and inside
of the fenders with lukewarm or cold water
at frequent intervals to reduce the harmful
effects of such agents.
Mud and sand adhering to the underbody
components may accelerate their corro-
sion.
After driving off-road or on muddy or sandy
roads, wash the mud and sand off the
underbody. Carefully flush the suspension
and axle parts, as they are particularly
prone to mud and sand buildup. Do not use
a sharp-edged tool to remove caked mud.
Appearance care/Exterior care
10-2

(526,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
&Checking the clutch pedal
free play1) 0.16–0.43 in (4.0–11.0 mm)Lightly depress the clutch pedal down with
your finger until you feel resistance, and
check the free play.
If the free play is not within proper
specification, contact your SUBARU deal-
er.
Hill start assist systemEnsure that the Hill start assist system
operates properly under the following
circumstances.
1. Stop the vehicle on an uphill grade by
depressing the brake pedal (all models)
and clutch pedal (MT models only), with
the engine running.
2. Make sure that the vehicle does not
move backward for several seconds after
the brake pedal is released.
3. Then make sure the vehicle starts
climbing the grade by following the normal
starting procedures.
If the Hill start assist system does not
operate as described above, contact your
SUBARU dealer.
Replacement of brake pad
and liningThe disc brakes have audible wear in-
dicators on the brake pads. If the brake
pads wear close to their service limit, the
wear indicator makes a very audible
scraping noise when the brake pedal is
applied.
If you hear this scraping noise each time
you apply the brake pedal, have the brake
pads serviced by your SUBARU dealer as
soon as possible.
Maintenance and service/Hill start assist system
11-28

(577,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
crease in temperature could cause
tread separation, and failure of the
tire(s). Possible resulting loss of
vehicle control could lead to an
accident.!Measuring and adjusting air
pressure to achieve proper in-
flationCheck and, if necessary, adjust the
pressure of each tire (including the
spare) at least once a month and
before any long journey. Check the
tire pressures when the tires are
cold. Use a pressure gauge to
adjust the tire pressures to the
specific values. Driving even a short
distance warms up the tires and
increases the tire pressures. Also,
the tire pressures are affected by
the outside temperature. It is best to
check tire pressure outdoors before
driving the vehicle. When a tire
becomes warm, the air inside it
expands, causing the tire pressure
to increase. Be careful not to mis-
takenly release air from a warm tire
to reduce its pressure.
&Glossary of tire terminology.
Accessory weight
The combined weight (in excess of
those standard items which may be
replaced) of automatic transmis-
sion, power steering, power brakes,
power windows, power seats, radio,
and heater, to the extent that these
items are available as factory-in-
stalled equipment (whether in-
stalled or not)..
Bead
The part of the tire that is made of
steel wires, wrapped or reinforced
by ply cords and that is shaped to fit
the rim..
Bead separation
A breakdown of the bond between
components in the bead..
Bias ply tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at alternate angles substantially
less than 90 degrees to the center-
line of the tread..
Carcass
The tire structure, except tread andsidewall rubber which, when in-
flated, bears the load.
.
Chunking
The breaking away of pieces of the
tread or sidewall..
Cold tire pressure
The pressure in a tire that has been
driven less than 1 mile or has been
standing for three hours or more..
Cord
The strands forming the plies in the
tire..
Cord separation
The parting of cords from adjacent
rubber compounds..
Cracking
Any parting within the tread, side-
wall, or inner liner of the tire
extending to cord material..
Curb weight
The weight of a motor vehicle with
standard equipment including the
maximum capacity of fuel, oil and
coolant, and if so equipped, air
conditioning and additional weight
optional engine.
–CONTINUED–
Consumer information and Reporting safety defects/Tire information
13-5
13

(579,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
.
Passenger car tire
A tire intended for use on passen-
ger cars, multipurpose passenger
vehicles, and trucks, that have a
gross vehicle weight rating (GVWR)
of 10,000 lbs (4,535 kg) or less..
Ply
A layer of rubber-coated parallel
cords..
Ply separation
A parting of rubber compound
between adjacent plies..
Pneumatic tire
A mechanical device made of rub-
ber, chemicals, fabric and steel or
other materials, that, when
mounted on an automotive wheel,
provides the traction and contains
the gas or fluid that sustains the
load..
Production options weight
The combined weight of those
installed regular production options
weighing over 5.1 lbs (2.3 kg) in
excess of those standard items
which they replace, not previously
considered in curb weight or acces-sory weight, including heavy duty
brakes, ride levelers, roof rack,
heavy duty battery, and special trim.
.
Radial ply tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at substantially 90 degrees to
the centerline of the tread..
Recommended inflation pres-
sure
The cold inflation pressure recom-
mended by a vehicle manufacturer..
Reinforced tire
A tire designed to operate at higher
loads and at higher inflation pres-
sures than the corresponding stan-
dard tire..
Rim
A metal support for a tire or a tire
and tube assembly upon which the
tire beads are seated..
Rim diameter
Nominal diameter of the bead seat..
Rim size designation
Rim diameter and width.
.
Rim type designation
The industry of manufacturer’s des-
ignation for a rim by style or code..
Rim width
Nominal distance between rim
flanges..
Section width
The linear distance between the
exteriors of the sidewalls of an
inflated tire, excluding elevations
due to labeling, decoration, or pro-
tective bands..
Sidewall
That portion of a tire between the
tread and bead..
Sidewall separation
The parting of the rubber compound
from the cord material in the side-
wall..
Test rim
The rim on which a tire is fitted for
testing, and it may be any rim listed
as appropriate for use with that tire..
Tread
That portion of a tire that comes into
contact with the road.
–CONTINUED–
Consumer information and Reporting safety defects/Tire information
13-7
13

(586,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
also loaded capacities of the vehi-
cle’s suspension, axles and other
parts of the body.
Therefore, this means that the
vehicle cannot necessarily be
loaded up to the tire’s maximum
load rating on the tire sidewall.&Adverse safety conse-
quences of overloading on
handling and stopping and on
tiresOverloading could affect vehicle
handling, stopping distance, and
vehicle and tire performance in the
following ways. This could lead to
an accident and possibly result in
severe personal injury..
Vehicle stability will deteriorate.
.
Heavy and/or high-mounted
loads could increase the risk of
rollover.
.
Stopping distance will increase.
.
Brakes could overheat and fail.
.
Suspension, bearings, axles and
other body parts could break or
experience accelerated wear thatwill shorten vehicle life.
.
Tires could fail.
.
Tread separation could occur.
.
Tire could separate from its rim.
&Steps for Determining Cor-
rect Load Limit1.
Locate the statement“The com-
bined weight of occupants and
cargo should never exceed XXX
kg or XXX lbs.”on your vehicle’s
placard.
2.
Determine the combined weight
of the driver and passengers that
will be riding in your vehicle.
3.
Subtract the combined weight of
the driver and passengers from
XXX kg or XXX lbs.
4.
The resulting figure equals the
available amount of cargo and
luggage load capacity. For exam-
ple, if the“XXX”amount equals
1400 lbs. and there will be five 150
lb passengers in your vehicle, the
amount of available cargo and
luggage load capacity is 650 lbs.
(1400750 (56150) = 650 lbs.)
5.
Determine the combined weight
of luggage and cargo being loaded
on the vehicle. That weight may not
safely exceed the available cargo
and luggage load capacity calcu-
lated in Step 4.
6.
If your vehicle will be towing a
trailer, load from your trailer will be
transferred to your vehicle. Consult
this manual to determine how this
reduces the available cargo and
luggage load capacity of your ve-
hicle.
Consumer information and Reporting safety defects/Tire information
13-14