inflation pressure SUBARU IMPREZA WRX STI 2011 Owners Manual

Black plate (141,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
is not working properly. Contact your
nearest SUBARU dealer for service im-
mediately.&
Rear differential oil
temperature warning
light (STI)
CAUTION
Reduce vehicle speed and park the
vehicle in a safe place as soon as
possible if the R.DIFF TEMP light
illuminates. Continued driving with
this light illuminated can damage
the rear differential and other parts
of the powertrain.
If this light illuminates when the engine is
running, it may indicate that the rear
differential oil temperature is too hot.
At this time, the driver ’s control center
differential will automatically cancel the
current torque-distribution ratio setting and
adopt its minimum ratio.
If the light illuminates while driving, reduce
vehicle speed and stop the vehicle at the
nearest safe place. Park the vehicle for
several minutes. After the light turns off,
you can start driving.
If the light does not turn off, contact the
nearest SUBARU dealer for service.
NOTE. If the tire pressures are not correct
and/or the tires are not all the same
size and brand, the rear differential will
be heavily loaded when the vehicle is
driven, resulting in an abnormally high
oil temperature.
. The rear differential oil will deterio-
rate if its temperature increases en-
ough for the rear differential oil tem-
perature warning light to illuminate. It is
advisable to have the rear differential
oil replaced as soon as possible.&
Low tire pressure
warning light (U.S.-spec.
models)
When the ignition switch is turned to the
“ON ”position, the low tire pressure warn-
ing light will illuminate for approximately 2
seconds to check that the tire pressure
monitoring system (TPMS) is functioning
properly. If there is no problem and all tires
are properly inflated, the light will turn off.
Each tire, including the spare (if provided),
should be checked monthly when cold
and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire inflation
pressure label. (If your vehicle has tires of
a different size than the size indicated on the vehicle placard or tire inflation pres-
sure label, you should determine the
proper tire inflation pressure for those
tires.)
As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS) that illuminates
a low tire pressure telltale when one or
more of your tires is significantly under-
inflated. Accordingly, when the low tire
pressure telltale illuminates, you should
stop and check your tires as soon as
possible, and inflate them to the proper
pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life,
and may affect the vehicle
’s handling and
stopping ability.
Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver ’s responsibility to
maintain correct tire pressure, even if
under-inflation has not reached the level
to trigger illumination of the TPMS low tire
pressure telltale.
Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction,
Instruments and controls
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3

Black plate (142,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
3-20
Instruments and controls
the telltale will flash for approximately one
minute and then remain continuously
illuminated. This sequence will continue
upon subsequent vehicle start-ups as long
as the malfunction exists. When the
malfunction indicator is illuminated, the
system may not be able to detect or signal
low tire pressure as intended. TPMS
malfunctions may occur for a variety of
reasons, including the installation of re-
placement or alternate tires or wheels on
the vehicle that prevent the TPMS from
functioning properly. Always check the
TPMS malfunction telltale after replacing
one or more tires or wheels on your
vehicle to ensure that the replacement or
alternate tires and wheels allow the TPMS
to continue to function properly.
Should the warning light illuminate stea-
dily after blinking for approximately one
minute, have the system inspected by
your nearest SUBARU dealer as soon as
possible.
WARNING
If this light does not illuminate
briefly after the ignition switch is
turned ON or the light illuminates
steadily after blinking for approxi-
mately one minute, you should have
your Tire Pressure Monitoring Sys-
tem checked at a SUBARU dealer as soon as possible.
If this light illuminates while driving,
never brake suddenly and keep
driving straight ahead while gradu-
ally reducing speed. Then slowly
pull off the road to a safe place.
Otherwise an accident involving
serious vehicle damage and serious
personal injury could occur.
If this light still illuminates while
driving after adjusting the tire pres-
sure, a tire may have significant
damage and a fast leak that causes
the tire to lose air rapidly. If you have
a flat tire, replace it with a spare tire
as soon as possible.
When a spare tire is mounted or a
wheel rim is replaced without the
original pressure sensor/transmitter
being transferred, the Low tire pres-
sure warning light will illuminate
steadily after blinking for approxi-
mately 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 system resetting.
If the light illuminates steadily after
blinking for approximately one min-
ute, promptly contact a SUBARU
dealer to have the system inspected.
CAUTION
The tire pressure monitoring system
is NOT a substitute for manually
checking tire pressure. The tire
pressure should be checked peri-
odically (at least monthly) using a
tire gauge. After any change to tire
pressure(s), the tire pressure mon-
itoring system will not re-check tire
inflation pressures until the vehicle
is first driven more than 20 mph (32
km/h). After adjusting the tire pres-
sures, increase the vehicle speed to
at least 20 mph (32 km/h) to start the
TPMS re-checking of the tire infla-
tion pressures. If the tire pressures
are now above the severe low
pressure threshold, the low tire
pressure warning light should turn
off a few minutes later. Therefore, be
sure to install the specified size for
the front and rear tires.

Black plate (145,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
light illuminates, have the vehicle
inspected at an authorized SUBARU
dealer.
! Hill start assist OFF indicator light
(STI)
While the Hill start assist system is
deactivated, the Hill start assist OFF
indicator light illuminates continuously to
inform the driver that the Hill start assist
system is not operational.&
Door open warning
light
The door open warning light illuminates if
any door or the rear gate is not fully
closed.
Always make sure this light is not illumi-
nated before you start to drive.&
All-Wheel Drive warn-
ing light (AT models)
This light illuminates when All-Wheel
Drive is disengaged and the drive me-
chanism is switched to Front Wheel Drive
for maintenance or similar purposes.
It flashes if the vehicle is driven with tires
of differing diameters fitted on the wheels
or with an excessively low air pressure in
any of the tires.
CAUTION
Continuing to drive with the AWD
warning light flashing can damage
the powertrain. If the AWD warning
light starts to flash, promptly park in
a safe place and check whether the
tires have differing diameters and
whether any of the tires has an
excessively low inflation pressure.&
Vehicle Dynamics
Control operation indi-
cator light
It blinks when the skid suppression func-
tion is activated. It illuminates only when
the traction control function is operating.
The Vehicle Dynamics Control system is
probably malfunctioning under any of the
following conditions. Have your vehicle
checked at a SUBARU dealer immedi-
ately.
. The light does not illuminate when the
ignition switch is turned to the “ON ”
position.
. The light does not turn off even after a
period of approximately 2 seconds after
the ignition switch has been turned to the
“ON ”position.
&
Vehicle Dynamics
Control warning light/
Vehicle Dynamics Con-
trol OFF indicator light/
Traction Control OFF in-
dicator light (STI)
This warning light has both the function of
indicating malfunctions in the Vehicle
Dynamics Control system and the function
of indicating that the Vehicle Dynamics
Control system has been deactivated or
only the Traction Control system has been
deactivated.
It illuminates in the event of a malfunction
in the system and is on when the Vehicle
Dynamics Control system is not operating
or only the Traction Control system is not
operating.
STI:
This warning light illuminates in yellow for
approximately 1 second when the ignition
switch is turned to the “ON”position. After
that, this warning light changes to green
and remains illuminated in green for 1
second, and then turns off. It indicates that
the Vehicle Dynamics Control system is
operating normally.
Instruments and controls
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3

Black plate (307,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
The 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).
WARNING
If the low tire pressure warning light
illuminates while driving, never
brake suddenly and keep driving
straight ahead while gradually redu-
cing speed. Then slowly pull off the
road to a safe place. Otherwise an
accident involving serious vehicle
damage and serious personal injury
could occur.
Check the pressure for all four tires
and adjust the pressure to the COLD
tire pressure shown on the tire
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 increase accordingly. Be sure to let the tires
cool thoroughly before adjusting
their pressures to the standard
values shown on the tire placard.
Refer to
“Tires and wheels” F11-31.
The tire pressure monitoring system
does not function when the vehicle
is stationary. After adjusting the tire
pressures, increase the vehicle
speed to at least 20 mph (32 km/h)
to start the TPMS re-checking 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 minutes later.
If this light still illuminates while
driving after adjusting the tire pres-
sure, a tire may have significant
damage and a fast leak that causes
the tire to lose air rapidly. If you have
a flat tire, replace it with a spare tire
as soon as possible.
When a spare tire is mounted or a
wheel rim is replaced without the
original pressure sensor/transmitter
being transferred, the low tire pres-
sure warning light will illuminate
steadily after blinking for approxi-
mately 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 system resetting.
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
approximately one minute, promptly
contact a SUBARU dealer to have
the system inspected.
CAUTION
.
Do not place metal film or any
metal parts in the cargo area/
trunk. This may cause poor re-
ception of the signals from the
tire pressure sensors, and the
tire pressure monitoring system
will not function properly.
. FCC WARNING
Changes or modifications not
expressly approved by the party
responsible for compliance
could void the user ’s authority
to operate the equipment.
Starting and operating
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7

Black plate (335,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
possible because the spare tire is de-
signed only for temporary use.
Check the inflation pressure of the tem-
porary spare tire periodically to keep the
tire ready for use. The correct pressure is
60 psi (420 kPa, 4.2 kg/cm
2).
When using the temporary spare tire, note
the following.
. Do not exceed 50 mph (80 km/h).
. Do not put a tire chain on the temporary
spare tire. Because of the smaller tire size,
a tire chain will not fit properly.
. Do not use two or more temporary
spare tires at the same time.
. Do not drive over obstacles. This tire
has a smaller diameter, so road clearance
is reduced.
1) Tread wear indicator bar
2) Indicator location mark. When the wear indicator appears on
the tread, replace the tire.
. The temporary spare tire must be used
only on a rear wheel. If a front wheel tire
gets punctured, replace the wheel with a
rear wheel and install the temporary spare
tire in place of the removed rear wheel.& Precautions for AWD models
with automatic transmissionYour vehicle is equipped with the AWD
(All-Wheel Drive) system. In addition, if
your vehicle is an AT model, before driving
your vehicle with the temporary spare tire,
deactivate the AWD capability of the
vehicle as follows. 1. Turn the ignition switch to the
“LOCK”
position.
2. Pull any one spare fuse out of the
spare fuse holder in the engine compart-
ment. Spare fuses are attached on the
back side of the fuse holder cover. You
may pick up any one fuse in the spare
fuse holder.
In case of emergency
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9

Black plate (435,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
Vehicle identification
1) Vehicle identification number
2) Emission control label
3) Tire inflation pressure label
4) Certification label
5) Vehicle identification number plate
6) Model number label
7) Fuel label
8) Air conditioner label Specifications
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12

Black plate (25,1)
北米Model "A1110BE-C" EDITED: 2010/ 11/ 17
For U.S.A. ........................................................... 13-2
Tire information .................................................. 13-2
Tire labeling....................................................... 13-2
Recommended tire inflation pressure .................. 13-4
Glossary of tire terminology ............................... 13-5
Tire care –maintenance and safety
practices ........................................................ 13-10
Vehicle load limit –how to determine ................ 13-10 Determining compatibility of tire and vehicle
load capacities .............................................. 13-13
Adverse safety consequences of overloading on handling and stopping and on tires ........... 13-14
Steps for Determining Correct Load Limit ......... 13-14
Uniform tire quality grading standards.......... 13-15
Treadwear....................................................... 13-15
Traction AA, A, B, C ......................................... 13-15
Temperature A, B, C ......................................... 13-15
Reporting safety defects (U.S.A.) ................... 13-16
Consumer information and Reporting safety defects
13

Black plate (439,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
Example:(6) Load Index: A numerical code
which specifies the maximum load
a tire can carry at the speed
indicated by its speed symbol, at
maximum inflation pressure.
For example, “90 ”means 1,323 lbs
(600 kg), “89 ”means 1,278 lbs (580
kg).
WARNING
Load indices apply only to the
tire, not to the vehicle. Putting
a load rated tire on any vehicle
does not mean the vehicle can
be loaded up to the tire ’s rated
load.
(7) Speed Rating: An alphabetical
system describing a tire ’s capability
to travel at established and prede-
termined speeds.
For example, “V ” means 149 mph
(240 km/h)
WARNING
.
Speed ratings apply only to the tire, not to the vehicle.
Putting a speed rated tire on
any vehicle does not mean
the vehicle can be operated
at the tire ’s rated speed.
.
The speed rating is void if
the tires are worn out, da-
maged, repaired, retreaded,
or otherwise altered from
their original condition. If
tires are repaired, re-
treaded, or otherwise al-
tered, they may not be sui-
table for original equipment
tire designed loads and
speeds.
! Tire Identification Number (TIN)Tire Identification Number (TIN) is
marked on the intended outboard
sidewall. The TIN is composed of
four groups. Here is a brief review
of the TIN with a breakdown of its
individual elements.
(1) Manufacturer ’s Identification
Mark
(2) Tire Size
(3) Tire Type Code
(4) Date of Manufacture
The first two figures identify the
week, starting with “01 ”to represent
the first full week of the calendar
year; the second two figures repre-
sent the year. For example, 0101
means the 1st week of 2001.! Other markingsThe following makings are also
placed on the sidewall.!Maximum permissible inflation
pressureThe maximum cold inflation pres-
sure to which this tire may be
inflated. For example, “300 kPa
(44 PSI) MAX. PRESS ”
Consumer information and Reporting safety defects
13-3
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13

Black plate (440,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
13-4
Consumer information and Reporting safety defects
! Maximum load ratingThe load rating at the maximum
permissible weight load for this tire.
For example, “MAX. LOAD 580 kg
(1279 LBS) @ 300 kPa (44 PSI)
MAX. PRESS. ”
WARNING
Maximum load rating applies
only to the tire, not to the
vehicle. Putting a load rated
tire on any vehicle does not
mean the vehicle can be
loaded up to the tire ’s rated
load.! Construction typeApplicable construction of this tire.
For example, “TUBELESS STEEL
BELTED RADIAL”! ConstructionThe generic name of each cord
material used in the plies (both
sidewall and tread area) of this tire.
For example, “PLIES: TREAD 2 STEEL + 2 POLYESTER SIDE-
WALL 2 POLYESTER
”
!Uniform Tire Quality Grading
(UTQG)For details, refer to “Uniform tire
quality grading standards ”F 13-15
.
& Recommended tire inflation
pressure! Recommended cold tire infla-
tion pressureFor recommended cold tire inflation
pressure for your vehicle ’s tires,
refer to “Tires ”F 12-11
.
! Vehicle placard
The vehicle placard is affixed to the
driver ’s side B-pillar.Example:The vehicle placard shows original
tire size, recommended cold tire
inflation pressure on each tire at
maximum loaded vehicle weight,
seating capacity and loading infor-
mation.! Adverse safety consequences
of under-inflationDriving at high speeds with exces-
sively low tire pressures can cause
the tires to flex severely and to
rapidly become hot. A sharp in-

Black plate (442,1)
北米Model "A1110BE-C" EDITED: 2010/ 12/ 17
13-6
Consumer information and Reporting safety defects
.
Extra load tire
A tire designed to operate at higher
loads and higher inflation pressure
than the corresponding standard
tire..
Groove
The space between two adjacent
tread ribs..
Innerliner
The layer(s) forming the inside sur-
face of a tubeless tire that contains
the inflating medium within the tire..
Innerliner separation
The parting of the innerliner from
cord material in the carcass..
Intended outboard sidewall(1)
The sidewall that contains a
whitewall, bears white lettering
or bears manufacturer, brand,
and/or model name molding that
is higher or deeper than the
same molding on the other side-
wall of the tire, or
(2)
The outward facing sidewall
of an asymmetrical tire that has
a particular side that must al-
ways face outward when mount- ing on a vehicle.
.
Light truck (LT) tire
A tire designated by its manufac-
turer as primarily intended for use
on lightweight trucks or multipur-
pose passenger vehicles..
Load rating
The maximum load that a tire is
rated to carry for a given inflation
pressure..
Maximum inflation pressure
The maximum cold inflation pres-
sure to which a tire may be inflated..
Maximum load rating
The load rating for a tire at the
maximum permissible inflation
pressure for that tire..
Maximum loaded vehicle weight
The sum of:
(a)
Curb weight
(b)
Accessory weight
(c)
Vehicle capacity weight
(d)
Production options weight
.
Maximum permissible inflation
pressure
The maximum cold inflation pres-
sure to which a tire may be inflated.
.
Measuring rim
The rim on which a tire is fitted for
physical dimension requirements..
Normal occupant weight
150 lbs (68 kg) times the number of
occupants specified in the second
column of Table 1 that is appended
to the end of this section..
Occupant distribution
Distribution of occupants in a vehi-
cle as specified in the third column
of Table 1 that is appended to the
end of this section..
Open splice
Any parting at any junction of tread,
sidewall, or innerliner that extends
to cord material..
Outer diameter
The overall diameter of an inflated
new tire..
Overall width
The linear distance between the
exteriors of the sidewalls of an
inflated tire, including elevations
due to labeling, decorations, or
protective bands or ribs.