wheel SUBARU WRX 2018 Repair Manual

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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
should be taken into account
when driving the vehicle in
such a condition.
.If you use non-matching tires, the
Vehicle Dynamics Control sys-
tem may not operate correctly.
.The Vehicle Dynamics Control
system helps prevent unstable
vehicle motion such as skidding
using control of the brakes and
engine power. Do not turn off the
Vehicle Dynamics Control sys-
tem unless it is absolutely neces-
sary. If you must turn off the
Vehicle Dynamics Control sys-
tem, drive very carefully accord-
ing to the road surface condition.
In the event of wheelspin and/or skidding
on a slippery road surface and/or during
cornering and/or an evasive maneuver,
the Vehicle Dynamics Control system
adjusts the engine’s output and the
wheels’respective braking forces to help
maintain traction and directional control.
.Traction Control Function
The traction control function is designed to
prevent spinning of the driving wheels on
slippery road surfaces, thereby helping to
maintain traction and directional control.
Activation of this function is shown byflashing the Vehicle Dynamics Control
operation indicator light.
.Skid Suppression Function
The skid suppression function is designed
to help maintain directional stability by
suppressing the wheels’tendency to slide
sideways during steering operations. Acti-
vation of this function is shown by flashing
of the Vehicle Dynamics Control operation
indicator light.
Vehicle Dynamics Control operation indi-
cator lightNOTE.The Vehicle Dynamics Control sys-
tem may be considered normal when
the following conditions occur.
–Slight twitching of the brakepedal is felt.
–The vehicle or steering wheel
shakes to a small degree.
–An operating sound from the
engine compartment is heard briefly
when starting the engine and when
driving off after starting the engine.
–The brake pedal seems to jolt
when driving off after starting the
engine.
.In the circumstances shown in the
following list, the vehicle may be less
stable than it feels to the driver. The
Vehicle Dynamics Control System may
therefore operate. Such operation does
not indicate a system malfunction.
–on gravel-covered or rutted roads
–on unfinished roads
–when the vehicle is fitted with
snow tires or winter tires
.Activation of the Vehicle Dynamics
Control system will cause operation of
the steering wheelto feel slightly
different compared to that for normal
conditions.
.It is always important to reduce
speed when approaching a corner,
even if your vehicle is equipped with
the Vehicle Dynamics Control system.
.Always turn off the engine before
replacing a tire. Failure to do so may
render the Vehicle Dynamics Control
Starting and operating/Vehicle Dynamics Control system
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off.
Creating an adequate driving wheel slip by
deactivating the Vehicle Dynamics Control
system temporarily may help to escape
from the following situations. Use the
Vehicle Dynamics Control OFF mode as
necessary.
.a standing start on a steeply sloping
road with a snowy, gravel-covered, or
otherwise slippery surface
.extrication of the vehicle when its
wheels are stuck in mud or deep snow
You should not deactivate the Vehicle
Dynamics Control system except under
the above-mentioned situations.NOTE.If you turn the ignition switch to the
“LOCK”/“OFF”position with the Vehi-
cle Dynamics Control system deacti-
vated, the system will be automatically
reactivated the next time the engine is
started.
.If you press and hold the switch for
30 seconds or longer, the Vehicle
Dynamics Control OFF indicator light
turns off, the Vehicle Dynamics Control
system is activated, and the system
ignores any further pressing of the
switch. To make the switch usable
again, turn the ignition switch to the“LOCK”/“OFF”position and restart the
engine.
.When the Vehicle Dynamics Control
OFF mode is selected, the vehicle’s
running performance is comparable
with that of a vehicle that does not have
a Vehicle Dynamics Control system. Do
not deactivate the Vehicle Dynamics
Control system except when absolutely
necessary.
.Even when the Vehicle Dynamics
Control OFF mode is selected, compo-
nents of the brake control system may
still activate. When the brake control
system is activated, the Vehicle Dy-
namics Control operation indicator
light illuminates.
Tire pressure monitoring
system (TPMS) (U.S.-spec.
models)Low tire pressure warning lightThe tire pressure monitoring system pro-
vides the driver with a warning message by
sending a signal from a sensor that is
installed in each wheel when tire pressure
is severely low.
The tire pressure monitoring system will
activate only when the vehicle is driven at
speeds above 20 mph (32 km/h). Also, this
system may not react immediately to a
sudden drop in tire pressure (for example,
a blow-out caused by running over a sharp
object).
Starting and operating/Tire pressure monitoring system (TPMS) (U.S.-spec. models)
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WARNING
.If the low tire pressure warning
light illuminates while driving,
never brake suddenly. Instead,
perform the following procedure.
Otherwise, an accident involving
serious vehicle damage and ser-
ious personal injury could occur.
(1) Keep driving straight ahead
while gradually reducing
speed.
(2) Slowly pull off the road to a
safe place.
(3) Check the pressure for all four
tires and adjust the pressure
to the COLD tire pressure
shown on the vehicle placard
on the door pillar on the
driver’s side.
Even when the vehicle is driven a
very short distance, the tires get
warm and their pressures in-
crease accordingly. Be sure to
let the tires cool thoroughly be-
fore adjusting their pressures to
the standard values shown on the
tire placard. Refer to“Tires and
wheels”F11-30. The tire pres-
sure monitoring system does not
function when the vehicle is sta-tionary. After adjusting the tire
pressures, increase the vehicle
speed to at least 20 mph (32 km/h)
to start the TPMS rechecking of
the tire inflation pressures. If the
tire pressures are now above the
severe low pressure threshold,
the low tire pressure warning
light should turn off a few min-
utes later.
If this light still illuminates while
driving after adjusting the tire
pressure, a tire may have signifi-
cant damage and a fast leak that
causes the tire to lose air rapidly.
If you have a flat tire, refer to“Flat
tires”F9-5.
.When a spare tire is mounted or a
wheel rim is replaced without the
original pressure sensor/trans-
mitter being transferred, the low
tire pressure warning light will
illuminate steadily after blinking
for approximately one minute.
This indicates the TPMS is unable
to monitor all four road wheels.
Contact your SUBARU dealer as
soon as possible for tire and
sensor replacement and/or sys-
tem resetting.
.When a tire is repaired with liquid
sealant, the tire pressure warningvalve and transmitter may not
operate properly. If a liquid sea-
lant is used, contact your nearest
SUBARU dealer or other qualified
service shop as soon as possi-
ble. Make sure to replace the tire
pressure warning valve and
transmitter when replacing the
tire. You may reuse the wheel if
there is no damage to it and if the
sealant residue is properly
cleaned off. Do not inject any tire
liquid or aerosol tire sealant into
the tires, as this may cause a
malfunction of the tire pressure
sensors. If the light illuminates
steadily after blinking for ap-
proximately one minute,
promptly contact a SUBARU
dealer to have the system in-
spected.
CAUTION
Do not place metal film or any metal
parts in the trunk. This may cause
poor reception of the signals from
the tire pressure sensors, and the
tire pressure monitoring system will
not function properly.
–CONTINUED–
Starting and operating/Tire pressure monitoring system (TPMS) (U.S.-spec. models)
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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
NOTEThis device complies with part 15 of the
FCC Rules. Operation is subject to the
following two conditions: (1) This de-
vice may not cause harmful interfer-
ence, and (2) this device must accept
any interference received, including
interference that may cause undesired
operation.
FCC CAUTION
Changes or modifications not ex-
pressly approved by the party respon-
sible for compliance could void the
user’s authority to operate the equip-
ment.
Parking your vehicle
WARNING
.Never leave unattended children
or pets in the vehicle. They could
accidentally injure themselves or
others through inadvertent op-
eration of the vehicle. Also, on
hot or sunny days, the tempera-
ture in a closed vehicle could
quickly become high enough to
cause severe or possibly fatal
injuries to them.
.Do not park the vehicle over
flammable materials such as dry
grass, waste paper or rags, as
they may burn easily if they come
near hot engine or exhaust sys-
tem parts.
.Be sure to stop the engine if you
take a nap in the vehicle. If engine
exhaust gas enters the passen-
ger compartment, occupants in
the vehicle could die from carbon
monoxide (CO) contained in the
exhaust gas.
CAUTION
TYPE RA: When parking the vehicle,
be careful not to contact a wheel
stop, etc. Doing so may damage the
bumpers, underside of the vehicle,
etc.&Parking brake (models with-
out electronic parking brake
system)To set the parking brake, depress the
brake pedal firmly and hold it down until
the parking brake lever is fully pulled up.To release the parking brake, perform the
following procedure.
1. Pull the lever up slightly.
Starting and operating/Parking your vehicle
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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
steering wheel. When the vehicle is
headed up the hill, turn the front wheels
away from the curb.When facing downhill, turn the front
wheels into the curb.
WARNING
.Never leave unattended children
or pets in the vehicle. They could
accidentally injure themselves or
others through inadvertent op-
eration of the vehicle. Also, on
hot or sunny days, the tempera-
ture in a closed vehicle could
quickly become high enough to
cause severe or possibly fatal
injuries to people.
.Do not park the vehicle overflammable materials such as dry
grass, waste paper or rags, as
they may burn easily if they come
near hot engine or exhaust sys-
tem parts.
.Be sure to stop the engine if you
take a nap in the vehicle. If engine
exhaust gas enters the passen-
ger compartment, occupants in
the vehicle could die from carbon
monoxide (CO) contained in the
exhaust gas.
CAUTION
If your vehicle has a front under-
spoiler and rear underspoiler (both
optional), pay attention to blocks
and other obstructions on the
ground when parking. The under-
spoilers could be damaged by con-
tact with them.
Auto Vehicle Hold functionThe Auto Vehicle Hold function will auto-
matically keep the vehicle stopped even
after releasing the brake pedal when the
vehicle is at a complete stop, such as at
traffic signals. The function will be can-
celed by either of the following operations.
.Depressing the accelerator pedal
.Depressing the brake pedal again
WARNING
.Do not use the Auto Vehicle Hold
function on a steep hill or slip-
pery road. The vehicle may move
even when using the Auto Vehicle
Hold function, causing serious
injury or accidents.
.Do not use the Auto Vehicle Hold
function to park the vehicle. The
vehicle may move unexpectedly,
causing serious injury or acci-
dents. Make sure to shift the
select lever to the“P”position
and apply the electronic parking
brake in the following cases.
–When you are going to park
your vehicle
Starting and operating/Auto Vehicle Hold function
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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!System malfunction indicatorSystem malfunction indicator
1) At first, this message will appear
2) Then this message will appearThis indicator appears when a malfunction
occurs in the system. Contact a SUBARU
dealer and have the system inspected.
&BSD/RCTA OFF switchBSD/RCTA OFF switchBSD/RCTA OFF indicatorPress the BSD/RCTA OFF switch to
deactivate the BSD/RCTA. Then the
BSD/RCTA OFF indicator light will appearon the combination meter display (color
LCD).
Press the switch again to activate the BSD/
RCTA. The BSD/RCTA OFF indicator
disappears.
NOTE.In the following cases, press the
BSD/RCTA OFF switch to deactivate
the system. The system may not oper-
ate properly due to blocked radar
waves.
–When a bicycle carrier or other
item is fitted to the rear of the
vehicle
–When using a chassis dynam-
ometer or free roller device, etc.
–When running the engine and
making the wheels rotate while
lifting up the vehicle
.If you turn the ignition switch to the
“LOCK”/“OFF”position, the last known
status of the system is maintained. For
example, if you turn the ignition switch
to the“LOCK”/“OFF”position with the
BSD/RCTA deactivated, the BSD/RCTA
remains deactivated the next time you
turn the ignition switch to the“ON”
position.
–CONTINUED–
Starting and operating/BSD/RCTA
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Weather conditions
–Extremely high or extremely low
temperatures in which the area near
the sonar sensor becomes too hot
or too cold to operate
–The sonar sensors or the rear
bumper near the sonar sensors is
exposed to heavy rain or a signifi-
cant amount of water
–Fog, snow or sandstorm, etc.
–Air is moving rapidly such as
when a strong wind is blowing
Parts attached to the rear bumper
near the sonar sensor
–Commercial electronic parts (fog
light, fender pole, radio antenna) or
commercial attachment parts (trai-
ler hitch, bicycle carrier, bumper
guard) are attached
–Parts that emit high frequency
sound, such as a horn or speaker,
are attached
Vehicle conditions
–The vehicle is significantly in-
clined
–The ground clearance is signifi-
cantly reduced due to the vehicle’s
loading condition, etc.
–When the sonar sensor is mis-
aligned due to a collision or anaccident
Surrounding environment
–A cloth banner, flag, hanging
branch or railroad crossing bars
are present in the reversing direc-
tion
–When reversing on a gravel or
grassy area
–When reversing in an area where
objects or walls are adjacent to the
vehicle such as narrow tunnels,
narrow bridges, narrow roads or
narrow garages
–Wheel tracks or a hole is present
in the ground of the reversing
direction
–When reversing over a drainage
cover (grate cover)
–The path of the reversing direc-
tion is inclined such as on a steep
uphill
–A curb is present in the reversing
direction
–When reversing downhill
–CONTINUED–
Starting and operating/Reverse Automatic Braking System
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北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
New vehicle break-in driving–
the first 1,000 miles (1,600 km)The performance and long life of your
vehicle are dependent on how you handle
and care for your vehicle while it is new.
Follow these instructions during the first
1,000 miles (1,600 km):
.Do not race the engine. And do not
allow engine speed to exceed 4,000 rpm
except in an emergency.
.Do not drive at one constant engine or
vehicle speed, either fast or slow.
.Avoid starting suddenly and rapid ac-
celeration, except in an emergency.
.Avoid hard braking, except in an emer-
gency.
The same break-in procedures should be
applied to an overhauled engine, newly
mounted engine or when brake pads or
brake linings are replaced with new ones.
Fuel economy hintsThe following suggestions will help to save
fuel.
.Select the proper gear position for the
speed and road conditions.
.Avoid sudden acceleration or decelera-
tion. Always accelerate gently until you
reach the desired speed. Then try to
maintain that speed for as long as possi-
ble.
.Do not pump the accelerator and avoid
racing the engine.
.Avoid unnecessary engine idling.
.Keep the engine properly tuned.
.Keep the tires inflated to the correct
pressure shown on the tire placard, which
is located under the door latch on the
driver’s side. Low pressure will increase
tire wear and fuel consumption.
.Use the air conditioner only when
necessary.
.Keep the front and rear wheels in
proper alignment.
.Avoid carrying unnecessary luggage or
cargo.
.The indication of the ECO gauge shows
a reference for saving fuel. For details,
refer to“ECO gauge”F3-12.
Engine exhaust gas (carbon
monoxide)
WARNING
.Never inhale engine exhaust gas.
Engine exhaust gas contains
carbon monoxide, a colorless
and odorless gas which is dan-
gerous, or even lethal, if inhaled.
.Always properly maintain the en-
gine exhaust system to prevent
engine exhaust gas from entering
the vehicle.
.Never run the engine in a closed
space, such as a garage, except
for the brief time needed to drive
the vehicle in or out of it.
.Avoid remaining in a parked ve-
hicle for a lengthy time while the
engine is running. If that is un-
avoidable, then use the ventila-
tion fan to force fresh air into the
vehicle.
.Always keep the front ventilator
inlet grille free from snow, leaves
or other obstructions to ensure
that the ventilation system al-
ways works properly.
.If at any time you suspect that
Driving tips/New vehicle break-in driving–the first 1,000 miles (1,600 km)
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Driving tips for AWD models
WARNING
.Always maintain a safe driving
speed according to the road and
weather conditions in order to
avoid having an accident on a
sharp turn, during sudden brak-
ing or under other similar condi-
tions.
.Always use the utmost care in
driving–overconfidence be-
cause you are driving an All-
Wheel Drive vehicle could easily
lead to a serious accident.
.When you replacing or installing
tire(s), all four tires must be the
same for following items.
(a) Size
(b) Circumference
(c) Speed symbol
(d) Load index
(e) Construction
(f) Manufacturer
(g) Brand (tread pattern)
(h) Degrees of wear
For the items (a) to (d), you must
obey the specification that isprinted on the tire placard. The
tire placard is located on the
bottom of driver’s door pillar.
If all of four tires are not the same
for items (a) to (h), there is a
possibility that serious mechan-
ical damage could occur to the
drive train of your car, and affect
the following.
—Ride
—Handling
—Braking
—Speedometer/Odometer
calibration
—Clearance between the body
and tires
It also may be dangerous and
lead to loss of vehicle control,
and it can lead to an accident.
CAUTION
If you use a temporary spare tire to
replace a flat tire, be sure to use the
original temporary spare tire stored
in the vehicle. Using other sizes may
result in severe mechanical damage
to the drive train of your vehicle.
All-Wheel Drive distributes the engine
power to all four wheels. AWD models
provide better traction when driving on
slippery, wet or snow-covered roads and
when moving out of mud, dirt and sand. By
shifting power between the front and rear
wheels, SUBARU AWD can also provide
added traction during acceleration and
added engine braking force during decel-
eration.
Therefore, your SUBARU AWD vehicle
may handle differently than an ordinary
two wheel drive vehicle and it contains
some features unique to AWD. For safety
purposes as well as to avoid damaging the
AWD system, you should keep the follow-
ing tips in mind.
.An AWD model is better able to climb
steeper roads under snowy or slippery
–CONTINUED–
Driving tips/Driving tips for AWD models
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conditions than a two wheel drive vehicle.
There is little difference in handling, how-
ever, during extremely sharp turns or
sudden braking. Therefore, when driving
down a slope or turning corners, be sure to
reduce your speed and maintain an ample
distance from other vehicles.
.Always check the cold tire pressure
before starting to drive. The recommended
tire pressure is provided on the tire
placard, which is located under the door
latch on the driver’s side.
.Frequent driving of an AWD vehicle
under hard-driving conditions such as
steep hills or dusty roads will necessitate
more frequent replacement of the follow-
ing items than that specified in the“War-
ranty and Maintenance Booklet”.
–Engine oil
–Brake fluid
–Rear differential gear oil
–Manual transmission oil (MT mod-
els)
–Continuously variable transmission
fluid (CVT models)
–Front differential gear oil (CVT
models)
.There are some precautions that you
must observe when towing your vehicle.
For detailed information, refer to“Towing”
F9-21.
Driving precautionWater entering the engine air intake or the
exhaust pipe or water splashing onto
electrical parts may damage your vehicle
and may cause it to stall. Never attempt to
drive through rushing water; regardless of
its depth, it can wash away the ground
from under your tires, resulting in possible
loss of traction and even vehicle rollover.
Winter driving&Operation during cold weath-
erCarry some emergency equipment, such
as a window scraper, a bag of sand, flares,
a small shovel and jumper cables.
Check the battery and cables. Cold tem-
peratures reduce battery capacity. The
battery must be in good condition to
provide enough power for cold winter
starts.
It normally takes longer to start the engine
in very cold weather conditions. Use an
engine oil of a proper grade and viscosity
for cold weather. Using heavy summer oil
will make it harder to start the engine.
Keep the door locks from freezing by
squirting them with deicer or glycerin.
Forcing a frozen door open may damage
or separate the rubber weather strips
around the door. If the door is frozen, use
hot water to melt the ice, and afterwards
thoroughly wipe the water away.
Use a windshield washer fluid that con-
tains an antifreeze solution. Do not use
engine antifreeze or other substitutes
because they may damage the paint of
the vehicle.
Driving tips/Driving precaution
8-6