2018 SUBARU WRX engine

(375,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
NOTE.While pressing the select lever but-
ton in, the indicator on the push-button
ignition switch will not turn green even
when the select lever is in the“P”
position.
.When the engine is not started, the
brake pedal may feel stiff. In such a
case, depress the brake pedal more
forcefully than usual. Check that the
operation indicator on the push-button
ignition switch turns green, and press
the push-button ignition switch to start
the engine.
!In case of the engine does not
start by the normal engine start
procedure
1. Move the shift lever to the neutral
position (MT models), or move the select
lever to the“P”position (CVT models).
2. Switch the power status to“ACC”.
3. Press and hold the push-button ignition
switch for at least 15 seconds with the
clutch pedal (MT models)/brake pedal
(CVT models) depressed.
Although the engine may start, only use
this procedure in the case of an emer-
gency. If the engine still does not start,
refer to“Starting engine”F9-27.!Stopping engine
1. Stop the vehicle completely.
2. Move the select lever to the“P”
position (CVT models).
3. Press the push-button ignition switch.
The engine will stop, and the power will be
switched to“OFF”.
WARNING
.Do not touch the push-button
ignition switch while driving.
When you operate the push-but-
ton ignition switch as follows, the
engine will stop.
–Pressing and holding the
switch for 3 seconds or longer.
–Pressing the switch briefly 3
times or more in succession.
When the engine stops, the brake
booster will not function. A great-
er foot pressure will be required
on the brake pedal.
The power steering system will
not operate either. A greater force
will be required to steer, and it
may result in an accident.
.If the engine stops while driving,
do not operate the push-button
ignition switch or open any of thedoors until the vehicle is stopped
in a safe location. It is dangerous
because the steering may be
locked. Stop the vehicle in a safe
location, and contact a SUBARU
dealer immediately.
CAUTION
For CVT models:
.Do not stop the engine while the
select lever is in a position other
than the“P”position.
.If the engine is stopped while the
select lever is in a position other
than the“P”position, the power
will be in“ACC”. If the vehicle is
left in this condition, the battery
may be discharged.NOTEAlthough you can stop the engine by
operating the push-button ignition
switch, do not stop the engine while
driving except in an emergency.
–CONTINUED–
Starting and operating/Starting and stopping the engine
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(376,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!When access key fob does not
operate properly
Refer to“Access key fob–if access key
fob does not operate properly”F9-26.&Remote engine start system
(dealer option)
WARNING
.Do not remote start a vehicle in an
enclosed environment (e.g.
closed garage). Prolonged opera-
tion of a motor vehicle in an
enclosed environment can cause
a harmful build-up of Carbon
Monoxide. Carbon Monoxide is
harmful to your health. Exposure
to high levels of Carbon Monox-
ide can cause headaches, dizzi-
ness or in extreme cases uncon-
sciousness and/or death.
.Before performing any servicing
of the vehicle, temporarily place
the remote engine start system in
service mode to prevent the sys-
tem from unexpectedly starting
the engine.
The remote engine start system allows you
to start the engine from outside the vehicle.
In addition, the remote engine start systemcan activate the heater or air conditioner,
providing you with a comfortable cabin
upon entry.
NOTEThe length of time for which it is
acceptable to allow the engine to
remain idling may be governed by local
laws and regulations. Check the local
rules when using the remote engine
start system.!Models with“keyless access with
push-button start system”
NOTEFor more details, refer to the Owner’s
Manual supplement for the remote
engine start system.Access key fob
1) Lock buttonAn access key fob serves as the remote
engine start transmitter. Operate the lock
button to start or stop the engine as
follows.
Starting and operating/Starting and stopping the engine
7-14

(377,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!Before starting the engine
Before using the remote engine start
system to start the engine, confirm the
following conditions.
.The select lever is in the“P”position.
.All doors are closed.
.The engine hood is closed.
.The push-button ignition switch is in the
“OFF”position.
!Starting the engine
1. Press the lock button briefly. The
hazard warning flashers then flash once.
2. Within 2 seconds, press the lock button
briefly again. The hazard warning flashers
then flash once again.
3. After step 2, immediately press and
hold the lock button. The hazard warning
flashers then flash once.
4. Approximately 3 seconds after step 3,
release the lock button. The engine will
then start successfully.
!Stopping the engine
Press and hold the lock button to stop the
engine with remote engine start system.
!Automatic engine shutdown
The remote engine start system will auto-
matically shut down or will not start theengine under the following conditions.
.The total run-time has exceeded 20
minutes.
.Any door is opened.
.The select lever is moved to any
position other than“P”.
.The engine hood is opened.
.The push-button ignition switch is
pressed.
.The brake pedal is depressed.
.The engine speed is 3,000 rpm or more.
The time setting until the engine automa-
tically stops can be changed. To change it,
please contact your SUBARU dealer. Note
that some settings may violate state,
provincial, or local laws and regulations.
Check the laws in your area to determine
which setting is permitted.
!Entering the vehicle while it is run-
ning via remote start
1. Unlock the vehicle doors using the
keyless access function. If you unlock the
vehicle’s doors manually using the key, the
vehicle’s alarm system will trigger (if the
alarm system is armed prior to activating
the remote engine start system) and the
engine will turn off. Perform either of the
following procedures to disarm the alarm
system. Refer to“Alarm system”F2-24.
.Switch the ignition to the“ACC”or“ON”state by pressing the push-button
ignition switch once or twice, respec-
tively.
.Press any button on the access key
fob/transmitter.
2. Enter the vehicle.
3. The engine will shut down when any
door is opened.
4. Press the push-button ignition switch
while depressing the brake pedal to restart
the engine.
!Entering the vehicle following re-
mote engine start shutdown
An alarm trigger may occur if the vehicle is
opened by the remote keyless entry
transmitter within a few seconds immedi-
ately following remote engine start shut-
down.
!Pre-heating or pre-cooling the in-
terior of the vehicle
Before exiting the vehicle, set the tem-
perature controls to the desired setting and
operation. After the system starts the
engine, the heater or air conditioning will
activate and heat or cool the interior to
your setting.
–CONTINUED–
Starting and operating/Starting and stopping the engine
7-15
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(379,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
WARNING
.Do not drive the vehicle with the
clutch disengaged (i.e., when the
clutch pedal is depressed) or with
the shift lever in the neutral
position. Engine braking has no
effect in either of these condi-
tions and the risk of an accident
is consequently increased.
.Do not engage the clutch (i.e.,
release the clutch pedal) sud-
denly when starting the vehicle.
By doing so the vehicle might
unexpectedly accelerate or the
transmission could malfunction.
CAUTION
Shift into reverse ONLY when the
vehicle has completely stopped. It
may cause damage to the transmis-
sion to try shifting into reverse when
the vehicle is moving.
&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 6th50 (80)
!Shift-up indicator (STI)The shift-up indicator appears to informthe driver about the upshift timing.
The shift-up indicator can be activated or
deactivated. For details, refer to“Gear
position indicator (MT models)/Shift-up
indicator (STI)”F3-34.
!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, do not drive the
vehicle with the tachometer’s needle in-
side the red area. Failure to observe this
precaution can lead to excessive engine
wear and poor fuel economy.
GearSTI
mph (km/h)Except STI
mph (km/h)
1st 31 (50) 30 (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
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Starting and operating/Manual transmission
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(380,1)
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

(385,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
Continuously variable trans-
missionThe continuously variable transmission is
electronically controlled and provides an
infinite number of forward speeds and 1
reverse speed. It also has a manual mode.
WARNING
Do not shift from the“P”or“N”
position into the“D”or“R”position
while depressing the accelerator
pedal. This may cause the vehicle
to jump forward or backward.
CAUTION
.Observe the following precau-
tions. Otherwise, the transmis-
sion could be damaged.
–Shift into the“P”or“R”posi-
tion only after the vehicle has
completely stopped.
–Do not shift from the“D”
position into the“R”position
or vice versa until the vehicle
has completely stopped.
.Do not race the engine for more
than 5 seconds in any position
except the“N”or“P”positionwhen the brake is applied or
when chocks are used in the
wheels. This may cause the
transmission fluid to overheat.
.Never move the vehicle as fol-
lows. Doing so may result in an
unexpected accident or malfunc-
tion.
–Moving rearward by inertia
with the select lever set in a
forward driving position.
–Moving forward by inertia with
the select lever set in the“R”
position.
.When parking the vehicle, first
securely apply the parking brake
and then place the select lever in
the“P”position. Do not park for a
long time with the select lever in
any other position as doing so
could result in a dead battery.
NOTE.When the engine coolant tempera-
ture is still low, the transmission will
upshift to higher engine speeds than
when the coolant temperature is suffi-
ciently high in order to shorten the
warm-up time and improve driveability.
The gearshift timing will automaticallyshift to the normal timing after the
engine has warmed up.
.Immediately after transmission fluid
is replaced, you may feel that the
transmission operation is somewhat
unusual. This results from invalidation
of data which the on-board computer
has collected and stored in memory to
allow the transmission to shift at the
most appropriate times for the current
condition of your vehicle. Optimized
shifting will be restored as the vehicle
continues to be driven for a while.
.When driving under continuous hea-
vy load conditions such as when climb-
ing a long, steep hill, the engine speed
or the vehicle speed may automatically
be reduced. This is not a malfunction.
This phenomenon results from the
engine control function maintaining
the cooling performance of the vehicle.
The engine and vehicle speed will
return to a normal speed when the
engine is able to maintain the optimum
cooling performance after the heavy
load decreases. Take extremely care
when driving under a heavy load.
.The continuously variable transmis-
sion is a chain type system that pro-
vides superior transmission efficiency
for maximum fuel economy. At times,
depending on varying driving condi-
tions, a chain operating noise may be
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Starting and operating/Continuously variable transmission
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(386,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
heard that is characteristic of this type
of system.&Select lever1) Select lever button
: With the brake pedal depressed, shift
while pressing the select lever button
in.: Shift while pressing the select lever
button in.: Shift without pressing the select lever
button.
The select lever has four positions,“P”,
“R”,“N”,“D”and it also has an“M”position
for using the manual mode.NOTEFor some models, to protect the engine
while the select lever is in the“P”or“N”
position, the engine is controlled so
that the engine speed may not become
too high even if the accelerator pedal is
depressed hard.!P (Park)
This position is for parking the vehicle and
starting the engine. In this position, the
transmission is mechanically locked to
prevent the vehicle from rolling freely.
When you park the vehicle, first apply the
parking brake firmly, then shift into the“P”
position. Do not hold the vehicle with only
the mechanical friction of the transmission.
To shift the select lever from the“P”
position to any other position, you should
depress the brake pedal fully then move
the select lever. This prevents the vehicle
from lurching when it is started.
!R (Reverse)
This position is for backing the vehicle. To
shift from the“N”to“R”position, stop the
vehicle completely then move the lever to
the“R”position while pressing the select
lever button in.
Even when you have turned the ignition
switch to the“LOCK”/“OFF”position, you
can still move the select lever from the“N”
to“R”position for a limited time period by
depressing the brake pedal, and then it
becomes impossible. For details, refer to
“Shift lock function”F7-27.
Starting and operating/Continuously variable transmission
7-24

(387,1)
北米Model "A1700BE-B" EDITED: 2017/ 10/ 11
!N (Neutral)
This position is for restarting a stalled
engine. In this position, the transmission is
neutral, meaning that the wheels and
transmission are not locked. Therefore,
the vehicle will roll freely, even on the
slightest incline unless the parking brake
or foot brake is applied.
WARNING
Do not drive the vehicle with the
select lever in the“N”(neutral)
position. Engine braking has no
effect in this condition and the risk
of an accident is consequently in-
creased.NOTEIf the select lever is in the“N”position
when you stop the engine for parking,
you may not subsequently be able to
move it to the“R”and“P”positions. If
this happens, turn the ignition switch to
the“ON”position. You will then be able
to move the select lever to the“P”
position.!D (Drive)
This position is for normal driving. The
transmission shifts automatically and con-
tinuously into a suitable gear according to
the vehicle speed and the acceleration you
require. Also, while driving up and down a
hill, the transmission assists and controls
the driving performance and engine brak-
ing while corresponding to the road grade.
When more acceleration is required in the
“D”position, depress the accelerator pedal
fully to the floor and hold that position. The
transmission will automatically downshift.
If the Intelligent (I) mode or the Sport (S)
mode has been selected, the transmission
will operate like a conventional automatic
transmission. When you release the pedal,
the transmission will return to the original
gear position.
If you operate one of the shift paddles
behind the steering wheel while driving in
the“D”position, the transmission will
temporarily switch to the manual mode.
In this mode, you can shift into any gear
position using the shift paddles. For details
about the manual mode, refer to“Selection
of manual mode”F7-25. Once the vehicle
speed stabilizes, the transmission will
switch from the manual mode back to the
“D”position for normal driving.
&Selection of manual modeWith the vehicle either moving or station-
ary, move the select lever from the“D”
position to the“M”position to select the
manual mode.
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Starting and operating/Continuously variable transmission
7-25
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