2011 SUBARU IMPREZA WRX STI Owners Manual

Black plate (293,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
“LOCK” position and remove the key from
the ignition key cylinder.
. If the ignition switch is turned to the
“LOCK” position while the select lever is in
the “N”position, the select lever may not
be moved to the “P”position after a period
of time. Therefore, move the select lever
to the “P”position with the brake pedal
depressed soon after the ignition switch is
turned to the “LOCK”position.
! Shift lock release
If the select lever cannot be operated, turn
the ignition switch back to the “ON ”
position then move the select lever to the
“ P ” position with the brake pedal de-
pressed.
If the select lever does not move after
performing the above procedure, perform
the following steps.
. When the select lever cannot be
shifted from “P ” to “N ”:
Refer to “Shift lock release using the shift
lock release button ”F 7-25.
. When the select lever cannot be
shifted from “N ” to “R ”, “P ”:
Within 60 seconds after placing the igni-
tion switch in the “Acc ”position, move the
select lever to the “R”or “P”position with
the brake pedal depressed. If you must perform the above procedure,
the shift lock system (or the vehicle control
system) may be malfunctioning. Contact a
SUBARU dealer for an inspection as soon
as possible.
If the select lever does not move after
performing the above procedure, refer to
“Shift lock release using the shift lock
release button
”F 7-25.
! Shift lock release using the shift
lock release button
Perform the following procedure to release
the shift lock.
1. Apply the parking brake and stop the
engine.
2. Remove the shift lock cover using a
flat-head screwdriver. The shift lock re-
lease button is located under the shift lock cover.
NOTETo prevent damage to the shift lock
cover, cover the tip of the flat-head
screwdriver with vinyl tape or a cloth
before removing the cover.3. While depressing the brake pedal,
insert a screwdriver into the hole, press
the shift lock release button using a
screwdriver, and then move the select
lever.
If the select lever does not move after
performing the above procedure, the shift
lock system may be malfunctioning. Con-
tact a SUBARU dealer for an inspection
as soon as possible.
Starting and operating
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CONTINUED –
7

Black plate (294,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
7-26
Starting and operating
& Selection of manual mode
NOTEPlease read the following points care-
fully and bear them in mind when using
the manual mode.
. If you attempt to shift down when
the engine speed is too high, i.e., when
a downshift would push the tachometer
needle beyond the red zone, beeps will
be emitted to warn you that the down-
shift is not possible.
. If you attempt to shift up when the
vehicle speed is too low, the transmis-
sion will not respond.
. You can perform a skip-shift (for
example, from 4th to 2nd) by operating
the select lever twice in rapid succes-
sion.
. The transmission automatically se-
lects 1st gear when the vehicle stops
moving.
. If the temperature of the automatic
transmission fluid becomes too high,
the “AT OIL TEMP ”warning light will
illuminate and upshifts to 4th gear will
not be possible. Immediately stop the
vehicle in a safe place and let the
engine idle until the warning light turns
off.
With the vehicle either moving or station-
ary, move the select lever from the “D”
position to the manual gate then move it to
the “+”end or “”end of the manual gate
to select manual mode.
1) Upshift indicator
2) Downshift indicator
3) Gear position indicatorWhen the manual mode is selected, the
gear position indicator and upshift indica-
tor and/or downshift indicator on the
combination meter illuminate. The gear
position indicator shows the currently
selected gear in the 1st-to-4th-gear range.
The upshift and downshift indicators show
when a gear shift is possible. When the
upshift indicator “
”is illuminated, up-
shifting is possible. When the downshift
indicator “
”is illuminated, downshifting
is possible. When both indicators are
illuminated, upshifting and downshifting
are both possible. When the vehicle stops
(for example, at traffic signals), the down-
shift indicator turns off.

Black plate (295,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
Gear shifts can be performed by using the
select lever (all models) or the paddle shift
switch behind the steering wheel (if
equipped).
! Using the select leverShift to the next-higher gear by briefly
pushing the select lever toward the “+”
end of the manual gate.
Shift to the next-lower gear by briefly
pulling the select lever toward the “”
end of the manual gate. !
Using the paddle shift (if equipped)
Pull the “+”of the paddle shift to upshift
one level. Pull the “ ” of the paddle shift to
downshift one level.
To deselect the manual mode, return the
select lever to the “D”position from the
manual gate.
While driving, if you change the gear by
paddle shifting, the gear position indicator
illuminates and shows the current gear
condition. At this time, the normal mode
temporarily changes to the manual mode,
and after driving for a short period of time,
the transmission mode returns to the
normal mode. (The timing of the gear
change and return is different, depending
on the driving condition when paddle
shifting.) Also, if you subsequently ease off the
accelerator pedal and then accelerate
again, the transmission will automatically
switch back from manual mode to normal
mode.
CAUTION
The paddle shift lever could be
accidentally changed if accessories
or other materials are placed on the
paddle shift. Do not place acces-
sories and other materials on the
paddle shift lever.&
Driving tips. On a road surface where there is a risk
of wheelspin (for example, a snow- or
gravel-covered road), you can pull away
from a standstill (safely and easily) by first
selecting the 2nd gear of the manual
mode.
. Always apply the foot or parking brake
when the vehicle is stopped in the “D”or
“R ”position.
. Always set the parking brake when
parking your vehicle. Do not hold the
vehicle with only the transmission.
. Do not keep the vehicle in a stationary
position on an uphill grade by using the
“D ”position. Use the brake instead.
Starting and operating
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7

Black plate (296,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
7-28
Starting and operating
. The engine may, on rare occasions,
knock when the vehicle rapidly acceler-
ates or rapidly pulls away from a standstill.
This phenomenon does not indicate a
problem.& SPORT modeSPORT mode is used when power is
needed for rapid acceleration or for uphill
driving. To select this mode, move the
select lever from the “D”position to the
manual gate.
When selected, the SPORT mode indica-
tor light on the combination meter will
illuminate.
To deselect SPORT mode, move the
select lever to the “D”position or select
manual mode.
To subsequently reselect SPORT mode,
move the select lever to the “D”position
and from there to the manual gate.
In this mode, the transmission shifts up at
higher vehicle speeds and shifts down
more responsively than in normal mode.
SI-DRIVE (STI)SI-DRIVE (SUBARU Intelligent Drive)
works to maximize engine performance,
control and efficiency.
This system consists of three modes:
Intelligent (I), Sport (S), and Sport Sharp
(S#). By adjusting the SI-DRIVE selector,
the character of the power unit changes.& Intelligent (I) mode! For smooth, efficient performance
drivingThe Intelligent (I) mode provides well-
balanced performance with greater fuel
efficiency and smooth driveability without
stress. Power delivery is moderate during
acceleration for maximum fuel efficiency.

Black plate (297,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
This is ideal for around-town driving and
situations that do not require full power
output. It provides better control in difficult
driving conditions, such as slippery roads
or loose surfaces, due to gentler throttle
response.When Intelligent (I) mode is selected, a
shift-up indicator “
”on the combination
meter will blink to signal the best time to
shift gears for maximum fuel efficiency.
& Sport (S) mode! For all-around performance drivingThe Sport (S) mode provides the engine
power desired by those who want to make
the driving experience their own personal
adventure.
The linear acceleration characteristic of
this versatile mode is ideal for normal
driving use.
&Sport Sharp (S#) mode! For maximum performance drivingFor sports-minded drivers, the Sport
Sharp (S#) mode offers an exhilarating
level of engine performance and control.
The throttle becomes more responsive
regardless of the engine speed. Delivering
maximum driving enjoyment, this mode is
ideal for tackling twisting roads and for
merging or overtaking other vehicles on
the freeway with confidence.
Starting and operating
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7

Black plate (298,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
7-30
Starting and operating
& SI-DRIVE selectorWhen you rotate the SI-DRIVE selector to
the left, the current SI-DRIVE mode
changes to Sport (S) mode. When you
rotate it to the right, the mode changes to
Sport Sharp (S#) mode, and when you
push it, the mode changes to Intelligent (I)
mode. After performing this operation, the
switch returns to its original location.NOTE. The next time you turn on the
engine, after you turned off the engine
in the Sport Sharp (S#) mode, the SI-
DRIVE mode changes to the Sport (S)
mode.
. The next time you turn on the
engine, after you turned off the engine
in the Sport (S) mode or Intelligent (I)
mode, the SI-DRIVE mode will stay in the same mode as when the engine
was turned off.
.
While the engine is running, if the
CHECK ENGINE warning light/malfunc-
tion indicator lamp illuminates, the SI-
DRIVE mode changes to the Sport (S)
mode. In this case, it is not possible to
change to the Sport Sharp (S#) mode or
Intelligent (I) mode.
. If there is a possibility that the
engine could overheat because of a
temperature increase of the engine
coolant, it is not possible to change to
the Sport Sharp (S#) mode. While the
vehicle is in the Sport Sharp (S#) mode,
it changes to the Sport (S) mode when
the engine coolant temperature in-
creases.
. If any of the SI-DRIVE indicators
blink, the SI-DRIVE system may be
malfunctioning. Contact your SUBARU
dealer.
Limited slip differential (LSD)
(STI)The LSD provides optimum distribution of
power according to the difference in
revolutions between the right and left
wheels that may be caused by certain
driving conditions, thereby improving driv-
ing stability on snow-covered, muddy or
other slippery roads or when high speed
driving.
CAUTION
. Never start the engine while a tire
on one side is jacked up, as the
vehicle may move.
. If one tire is spinning in mud,
avoid continued spinning at high
speed as this could adversely
affect the LSD.
. 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 will adversely affect
the LSD.

Black plate (299,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
Power steeringThe power steering system operates only
when the engine is running.
If you lose power steering assist because
the engine stops or the system fails to
function, you can steer but it will take
much more effort.
CAUTION
Do not hold the steering wheel at the
fully locked position left or right for
more than 5 seconds. This may
damage the power steering pump.NOTERight after the engine has been started
and before it has warmed up, you may
hear a noise coming from areas adja-
cent to the power steering pump which
is located at the right-front area of the
engine compartment. This noise is
normal. It does not indicate power
steering system trouble.
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 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.
Starting and operating
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7

Black plate (300,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
7-32
Starting and operating
! 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 bring 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- 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 the sound of ABS
operating from the engine compart-
ment.
& 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.
ABS (Anti-lock Brake Sys-
tem)The ABS system prevents the lock-up of
wheels which may occur during sudden
braking or braking on slippery road sur-
faces. This helps prevent the loss of
steering control and directional stability
caused by wheel lock-up.
When the ABS system 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 system 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 with an ABS
equipped vehicle could easily lead
to a serious accident.
CAUTION
. The ABS system does not always
decrease stopping distance. You
should always maintain a safe
following distance from other