2011 SUBARU IMPREZA WRX STI automatic transmission

Black plate (5,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
& Abbreviation listYou will find several abbreviations in this
manual. The meanings of the abbrevia-
tions are shown in the following list.Abbreviation Meaning
A/C Air conditioner
A/ELR Automatic/Emergency locking
retractor
ABS Anti-lock brake system
AKI Anti knock index
ALR Automatic locking retractor
AT Automatic transmission
ATF Automatic transmission fluid
AWD All-wheel drive
DCCD Driver
’s control center differ-
ential
DRL Daytime running light
EBD Electronic brake force distri-
bution
ELR Emergency locking retractor
FWD Front-wheel drive
GAW Gross axle weight
GAWR Gross axle weight rating
GVW Gross vehicle weight
GVWR Gross vehicle weight rating
HID High intensity discharge Abbreviation
Meaning
INT Intermittent
LATCH Lower anchors and tethers for
children
LED Light emitting diode
LSD Limited slip differential
MIL Malfunction indicator lamp
MMT Methylcyclopentadienyl man-
ganese tricarbonyl
MT Manual transmission
OBD On-board diagnostics
RON Research octane number
SI-DRIVE SUBARU Intelligent Drive
SRS Supplemental restraint sys-
tem
TIN Tire identification number
TPMS Tire pressure monitoring sys-
tem
VDC Vehicle dynamics control
Vehicle symbolsThere are some of the symbols you may
see on your vehicle.
For warning and indicator lights, refer to
“Warning and indicator lights
”F 24.
Mark Name
WARNINGCAUTIONPower door lock (turbo mod-
els)Power door unlock (turbo
models)Power door lock and unlock
(non-turbo models)Power window with automatic
open (all models) and close (if
equipped) functionPassengers’windows lock
and unlockFuel
3
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0

Black plate (140,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
3-18
Instruments and controls
approximately 2 seconds when the igni-
tion switch is turned to the “ON”position.
After that, this indicator light/warning light
changes to BLUEand maintains illumina-
tion in BLUE. This BLUEilluminated light
turns off when the engine is warmed up
sufficiently.
If the engine coolant temperature in-
creases over the specified range, the
indicator light/warning light blinks in
RED . At this time, the engine is close to
overheating.
If the engine coolant temperature in-
creases further, the indicator light/warning
light illuminates in REDcontinuously. At
this time, the engine may be overheating.
When the indicator light/warning light
blinks in REDor illuminates in RED, safely
stop the vehicle as soon as possible, and
refer to the emergency steps to take in the
case of engine overheating. Refer to
“Engine overheating ”F 9-13. After that,
have the system checked by your nearest
SUBARU dealer.
Also, if the indicator light/warning light
often blinks in RED, the electrical system
may be malfunctioning. Contact your
SUBARU dealer for an inspection.
NOTEIf the engine is restarted after a certain
driving condition, this indicator light/
warning light may illuminate in RED.
However, this is not a malfunction if the
indicator light/warning light turns off
after a short time.&
Charge warning light
If this light illuminates when the engine is
running, it may indicate that the charging
system is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
engine at the first safe opportunity and
check the alternator belt. If the belt is
loose, broken or if the belt is in good
condition but the light remains illuminated,
contact your nearest SUBARU dealer
immediately.&
Oil pressure warning
light
If this light illuminates when the engine is
running, it may indicate that the engine oil
pressure is low and the lubricating system
is not working properly.
If the light illuminates while driving or does
not turn off after the engine starts, stop the
engine at the first safe opportunity and check the engine oil level. If the oil level is
low, add oil immediately. If the engine oil is
at the proper level but the light remains
illuminated, contact your nearest
SUBARU dealer immediately.
For details about checking the engine oil
level or adding the engine oil, refer to
“Engine oil
”F 11-10.
CAUTION
Do not operate the engine with the
oil pressure warning light illumi-
nated. This may cause serious en-
gine damage.&
AT OIL TEMP warning
light (AT models)
If this light illuminates when the engine is
running, it may indicate that the automatic
transmission fluid temperature is too hot.
If the light illuminates while driving, im-
mediately stop the vehicle in a safe place
and let the engine idle until the warning
light turns off.
! Automatic transmission control
system warning
If the “AT OIL TEMP ”warning light flashes
after the engine starts, it may indicate that
the automatic transmission control system

Black plate (148,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
3-26
Instruments and controls
& SI-DRIVE indicator light (STI)1) Intelligent (I) mode
2) Sport (S) mode
3) Sport Sharp (S#) modeThis light indicates the current SI-DRIVE
mode.
For details of SI-DRIVE mode, refer to “SI-
DRIVE (STI) ”F 7-28.&
Shift-up indicator light
(STI)
While selecting the Intelligent (I) mode of
SI-DRIVE, this indicator light illuminates
and informs the driver about the upshift
timing for fuel-efficient driving.
& Select lever/gear position in-
dicator (AT models)When the ignition switch is turned to the
“ON ”position, all of the select lever/gear
position indicators illuminate for 2 sec-
onds, and then the indicator shows the
position of the select lever.
When the manual mode is selected, the
gear position indicator (which shows the
current gear selection) and the upshift/
downshift indicator light up. Refer to
“Automatic transmission ”F 7-22.
&
Turn signal indicator
lights
These lights show the operation of the turn
signal or lane change signal.
If the indicator lights do not blink or blink
rapidly, the turn signal bulb may be burned
out. Replace the bulb as soon as possible.
Refer to “Replacing bulbs ”F 11-47.&
High beam indicator
light
This light shows that the headlights are in
the high beam mode.
This indicator light also illuminates when
the headlight flasher is operated.&
Cruise control indica-
tor light
This light illuminates when the “CRUISE”
main switch is pressed.NOTE. If you press the “CRUISE ”main
switch button while turning the ignition
switch “ON ”, the cruise control func-
tion is deactivated and the cruise
control indicator light flashes. To re-
activate the cruise control function,
turn the ignition switch back to the
“ Acc ”or “LOCK ”position, and then

Black plate (162,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
3-40
Instruments and controls
MirrorsAlways check that the inside and outside
mirrors are properly adjusted before you
start driving.& Inside mirrorThe inside mirror has a day and night
position. Pull the tab at the bottom of the
mirror toward you for the night position.
Push it away for the day position. The
night position reduces glare from head-
lights.
&Auto-dimming mirror/com-
pass (if equipped)1) Auto dimming indicator
2) Left (mirror) button
3) Photosensor
4) Right (compass) button
5) Compass displayThe auto-dimming mirror has an anti-glare
feature which automatically reduces glare
coming from headlights of vehicles behind
you. It also contains a built-in compass.
. By pressing and releasing the left
button, the automatic dimming function is
toggled on or off. When the automatic
dimming function is on, the auto dimming
indicator light (green) located on the left
button will illuminate.
. By pressing and releasing the right button, the compass display is toggled on
or off. When the compass is on, an
illuminated compass reading will appear
in the upper right corner of the mirror.
Even with the mirror in anti-glare mode,
the mirror surface turns bright if the
transmission is shifted into reverse. This
is to ensure good rearward visibility during
reversing.
!
Photosensors
The mirror has a photosensor attached on
both the front and back sides. If the glare
from the headlights of vehicles behind you
strikes the mirror, these sensors detect it
and make the reflection surface of the
mirror dimmer to help prevent you from
being blinded. For this reason, use care
not to cover the sensors with stickers, or

Black plate (164,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
3-42
Instruments and controls
dimming function is on, the LED indicator
will illuminate.
Even with the mirror in the automatic
dimming mode, the mirror surface turns
bright if the transmission is shifted into
reverse. This is to ensure good rearward
visibility during reversing.
. By pressing the compass display but-
ton, the compass display is toggled on or
off. When the compass is on, an illumi-
nated compass reading will appear in the
upper right corner of the mirror.
When cleaning the mirror, use a paper
towel or similar material dampened with
glass cleaner. Do not spray glass cleaner
directly on the mirror as that may cause
theliquidcleanertoenterthemirror
housing and damage the mirror. !
Photosensors
The mirror has a photosensor attached on
both the front and back sides. During
nighttime driving, these sensors detect
distracting glare from vehicle headlights
behind you and automatically dim the
mirror to eliminate glare and preserve
your vision. For this reason, use care not
to cover the sensors with stickers, or other
similar items. Periodically wipe the sen-
sors clean using a piece of dry soft cotton
cloth or an applicator. !
Compass zone adjustment
Compass calibration zones1. Refer to the “Compass calibration
zones” map shown above to verify that
the compass zone setting is correct for
your geographical location.
2. Press and hold the compass display
button for 3 seconds until the zone
selection comes up (a number will be
displayed in the mirror compass window).
3. Press the compass display button
repeatedly until the correct zone setting
for your location is displayed.
4. Releasing the button for 5 seconds will
exit the zone setting mode.

Black plate (13,1)
北米Model "A1110BE-C" EDITED: 2010/ 11/ 17
Fuel ...................................................................... 7-3
Fuel requirements ............................................... 7-3
Fuel filler lid and cap ........................................... 7-4
State emission testing (U.S. only) ...................... 7-7
Preparing to drive ............................................... 7-8
Starting the engine .............................................. 7-9
MT models.......................................................... 7-9
AT models ........................................................... 7-9
Stopping the engine ........................................... 7-10
Remote engine start system (dealer option) .............................................................. 7-11
Starting your vehicle .......................................... 7-11
Remote start safety features ............................... 7-11
Entering the vehicle while it is running via remote start ................................................................. 7-12
Entering the vehicle following remote engine start shutdown ......................................................... 7-12
Pre-heating or pre-cooling the interior of the vehicle ............................................................. 7-12
Service mode ..................................................... 7-12
Remote engine start transmitter programming and programmable feature option ..................... 7-12
System maintenance .......................................... 7-13
Manual transmission –6 speeds (STI) ............. 7-15
Selecting reverse gear ........................................ 7-15
Shifting speeds .................................................. 7-16
Driving tips ........................................................ 7-16
Manual transmission –5 speeds (except
STI) ................................................................... 7-17
Shifting speeds .................................................. 7-17
Driving tips ........................................................ 7-18
Driver’s Control Center Differential (DCCD)
(STI) ................................................................. 7-18
To change mode of driver ’s control center
differential ....................................................... 7-19
Auto mode ........................................................ 7-19
Manual mode ..................................................... 7-20
Temporary release ............................................. 7-22
Automatic transmission .................................... 7-22
Select lever....................................................... 7-23
Shift lock function ............................................. 7-24
Selection of manual mode .................................. 7-26
Driving tips ........................................................ 7-27
SPORT mode ..................................................... 7-28
SI-DRIVE (STI) .................................................... 7-28
Intelligent (I) mode ............................................. 7-28
Sport (S) mode .................................................. 7-29
Sport Sharp (S#) mode. ...................................... 7-29
SI-DRIVE selector .............................................. 7-30
Limited slip differential (LSD) (STI) .................. 7-30
Power steering ................................................... 7-31
Braking ............................................................... 7-31
Braking tips ....................................................... 7-31
Brake system .................................................... 7-31
Disc brake pad wear warning indicators ............. 7-32
ABS (Anti-lock Brake System).......................... 7-32
ABS system self-check...................................... 7-33
ABS warning light .............................................. 7-33
Electronic Brake Force Distribution (EBD)
system ............................................................. 7-33
Steps to take if EBD system malfunctions ..... ..... 7-33
Starting and operating
7

Black plate (290,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
7-22
Starting and operating
. When a temporary spare tire is
installed
. When your vehicle is towed
. When the vehicle is stopped
with the manual mode se-
lected
NOTE. A higher initial LSD torque setting
gives the vehicle greater traction when
driving straight ahead but makes cor-
nering more difficult. Remember this
when adjusting the initial LSD torque.
In general, higher initial LSD torque
settings assist driving on slippery
roads and lower settings for non-slip-
pery roads. When the vehicle is stuck
in snow or mud, setting the initial LSD
torque to the maximum will help to free
the vehicle.
. The setting of the initial LSD torque
will remain even when the auto mode is
selected or the ignition switch is turned
to the “OFF ”position. However, the
initial LSD torque will be minimized
when the battery is disconnected and
reconnected.
. During cornering or when making
turns (especially when going into the
garage), the rotational difference be-
tween the front and rear wheels may cause a braking effect accompanied by
vibration and noise. This does not
indicate a problem. The phenomenon
will disappear when setting the initial
LSD torque to the minimum.
In the auto mode, it controls the initial
LSD torque automatically. While in the
auto mode, this phenomenon some-
times occurs depending on the driving
condition, however, it does not indicate
a problem.
.
Use the center differential indicator
light only as a rough indication of the
initial LSD torque.
. If you operate the center differential
control switch while quickly accelerat-
ing or turning a tight corner, you may
feel slight shocks. This is due to
differential action by the center differ-
ential and does not indicate a problem.
& Temporary releaseWhen the driver stops the vehicle and
pulls the parking brake lever after manu-
ally setting the initial LSD torque, the LSD
torque is temporarily minimized. However
the indicator on the combination meter
continues to show the driver ’s selected
initial LSD torque. When the driver re-
leases the parking brake lever, the initial
LSD torque set by the driver is restored.
Automatic transmissionThe automatic transmission is electroni-
cally controlled and provides 4 forward
speeds and 1 reverse speed. Also, it has a
manual mode and a SPORT 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
. Shift into the “P ” or “R ” position
only after the vehicle is comple-
tely stopped. Shifting while the
vehicle is moving may cause
damage to the transmission.
. Do not race the engine for more
than 5 seconds in any position
except the “N ” or “P ” position
when the brake is set or when
chocks are used in the wheels.
This may cause the automatic
transmission fluid to overheat.
. Avoid shifting from one of the
forward driving positions into the

Black plate (291,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
“R ” position or vice versa until
the vehicle has completely
stopped. Such shifting may
cause damage to the transmis-
sion.
. When parking the vehicle, first
securely apply the parking brake
and then place the select lever in
the “P ” position. Avoid parking
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 automatic transmis-
sion will upshift to higher engine
speeds than when the coolant tempera-
ture is sufficiently high in order to
shorten the warm-up time and improve
driveability. The gearshift timing will
automatically shift to the normal timing
after the engine has warmed up.
. Immediately after ATF (automatic
transmission fluid) is replaced, you
may feel that the automatic transmis-
sion 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.
&
Select lever
: Shifting is possible with the brake pedal
depressed.: Shifting is possible whether the brakepedal is depressed or not. However,
while the ignition switch is in the “LOCK ”
or “Acc ”position, shifting is not possible
if the brake pedal is not depressed.
Depress the brake pedal and move the
select lever.: Shifting is possible whether the brake pedal is depressed or not.
The select lever has four positions, “P”,
“R ”,“N ”, “D ”and also has manual gate for using
“SPORT ”mode or manual mode.
! P (Park)
This position is for parking the vehicle and
starting the engine.
In this position, the transmission is me-
chanically locked to prevent the vehicle
from rolling freely.
When you park the vehicle, first set the
parking brake fully, then shift into the “P ”
position. Do not hold the vehicle with only
the transmission.
To shift the select lever from the “P”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.
! N (Neutral)
This position is for restarting a stalled
engine.
In this position the wheels and transmis-
sion are not locked. In this position, the
transmission is neutral; the vehicle will roll
freely, even on the slightest incline unless
Starting and operating
7-23
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7