2012 SUBARU IMPREZA WRX STI cooling

25
24
Getting
Started Instrument
Panel Gauges
Personalize Controls While
OperatingSafety / In Case
of Emergency Additional
Information
24
25
GetGttintigStartedInsItrument PanelGauGgesPerPsonalilizeConCtrotlslWhile OperatingSafSfetyt / /In ICasCe of EmergencyAddAdditiiional lInformation
While
Operating
Front Hood and Hood ScoopDue to the lightweight material, a slight vibration
is normal at higher speeds and will not affect the
durability of the hood. To avoid deforming the
front hood when closing, do not press down
on the hood with your hands. You can release
your hold on the front hood approximately
12 inches above the closing position and its
weight should cause it to close securely.

Driver Control Center
Differential (DCCD)
(Impreza WRX STI only)This system adjusts the torque-distribution
ratio between the front and rear wheels
of the center differential to suit driving and
road surface conditions. The DCCD can be
operated automatically or manually. When
the system is in the automatic mode, the
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control switch located beside the parking brake lever for
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make a vibration or noise when the vehicle is in
tight turns at slow speeds (torque binding). In addition, if the rear differential oil
exceeds a certain temperature, the DCCD will automatically cancel the current
torque-distribution ratio setting and adopt its minimum ratio.

Front Fender VentsThe front fender has functional side vents that increase
air flow through the engine compartment. This provides
additional cooling for the intercooler and engine.

Limited Slip Differential
(Impreza WRX STI only)The Limited Slip Differential (LSD) provides optimum distribution of power according to
the difference in revolution between the right and left rear wheels that may be caused
by certain driving conditions, thereby improving driving stability on snow-covered,
muddy or other slippery roads or during high speed driving. Due to the nature of this
mechanical Limited Slip Differential, the rear differential gears may make a vibration
and/or noise when making turns. When servicing the LSD, use only specified gear oil.
TiresThe factory-fitted tires on your vehicle are summer
tires. Summer tires are high-speed capability tires
best suited for highway driving under dry conditions.
Summer tires are inadequate for driving on slippery
roads, such as on snow-covered or icy roads. If you drive your vehicle on
snow-covered or icy roads, we
strongly recommend the use
of winter (snow) tires for all four
wheels. Please note that these
originally equipped summer
tires offer advanced grip
performance and will wear out
quicker than ordinary tires.
WRX STI
WRX

Black plate (7,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 2
Ventilator .............................................................. 4-2
Airflow selection ................................................. 4-2
Center and side ventilators .................................. 4-3
Manual climate control system (if
equipped) .......................................................... 4-3
Control panel ...................................................... 4-3
Heater operation ................................................. 4-5
Air conditioner operation ..................................... 4-7
Automatic climate control system (if
equipped) .......................................................... 4-8
Control panel ...................................................... 4-8
To use as full-automatic climate control system .............................................................. 4-8
To use as semi-automatic climate control system .............................................................. 4-8
Fan speed control dial ......................................... 4-9
Temperature control dial ...................................... 4-9
Airflow control dial .............................................. 4-9
Air inlet selection button .................................... 4-10 Air conditioner button
........................................ 4-11
Temperature sensors ......................................... 4-11
Operating tips for heater and air
conditioner ...................................................... 4-12
Cleaning ventilation grille ................................... 4-12
Efficient cooling after parking in direct sunlight ........................................................... 4-12
Lubrication oil circulation in the refrigerant circuit .............................................................. 4-12
Checking air conditioning system before summer season ............................................................ 4-12
Cooling and dehumidifying in high humidity and low temperature weather conditions ................. 4-12
Air conditioner compressor shut-off when engine is heavily loaded .............................................. 4-13
Refrigerant for your climate control system ... ..... 4-13
Air filtration system........................................... 4-13
Replacing an air filter ......................................... 4-13
Climate control
4

Black plate (172,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
4-4
Climate control
! Fan speed control dial
The fan operates only when the ignition
switch is turned to the “ON”position. The
fan speed control dial is used to select
four fan speeds.
! Airflow control dial
Each dial position activates the following
air outlets.
(Ventilation): Instrument panel outlets(Bi-level): Instrument panel outlets and
foot outlets(Heat): Foot outlets, both side outlets of
the instrument panel and some through
windshield defroster outlets (A small
amount of air flows to the windshield and
both side windows to prevent fogging.)(Heat-def): Windshield defroster out-
lets, foot outlets and both side outlets of
the instrument panel: Windshield defroster outlets and both
side outlets of the instrument panel
For details, refer to “Airflow selection”F 4-
2.
NOTEWhen the dial is placed in the “
”or
“
” position, the air conditioner com-
pressor operates automatically regard- less of the position of the air condi-
tioner button to defog the windshield
more quickly. However the indicator on
the air conditioner button will not
illuminate. At the same time, the air
inlet selection is automatically set to
“
outside air ”mode.
In this state, you cannot select “recir-
culation ”mode by manually pressing
the air inlet selection button.
Also, you cannot stop the air condi-
tioner compressor by pressing the air
conditioner button.
! Air conditioner button
The air conditioner operates only when
the engine is running.
Push the air conditioner button while the
fan is in operation to turn on the air conditioner. The indicator light will illumi-
nate.
Push it again to turn off the air conditioner.
!
Air inlet selection button
ON position (recirculation): Interior air is
recirculated inside the vehicle. Push the
air inlet selection button to the ON posi-
tion. The indicator light will illuminate.
Place the air inlet selection button to the
ON position for fast cooling with the air
conditioner or when driving on a dusty
road.
OFF position (outside air): Outside air is
drawn into the passenger compartment.
Push the air inlet selection button again to
the OFF position. The indicator light will
turn off.

Black plate (175,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
inletselectionbuttonintheON
position may fog up the windows.
Switch to the OFF position as soon
as the outside dusty condition
clears.& Air conditioner operation! Cooling or dehumidifying1) ON positionFor cooling and dehumidification of the
passenger compartment, performing the
following steps will allow air to flow
through the instrument panel outlets:
1. Set the air inlet selection button to the
OFF position.
2. Set the airflow control dial to the “
”
position. 3. Set the air conditioner button to the
“ON
”position.
4. Set the temperature control dial to the
blue side.
5. Set the fan speed control dial at the
highest speed.
! Defrosting or defogging
To direct warm air to the windshield and
front door windows:
1. Set the airflow control dial to the “
”
position.
2. Set the temperature control dial to the
red side.
3. Set the fan speed control dial at the
highest speed.
The air conditioner compressor automati-
cally operates when the airflow control dial set in the
“
”or “
”position to provide
better defogging performance.Climate control
4-7
4

Black plate (177,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
& Fan speed control dialThe fan operates only with the ignition
switch in the ON position. The fan speed
control dial is used to select the AUTO
(automatic control) mode or to select the
desired fan speed. The dial ’s positions
and their functions are as follows.
OFF: The fan does not operate.
AUTO: The fan speed is adjusted auto-
maticallyinaccordancewiththeair
temperature inside and outside the pas-
senger compartment, the intensity of sun-
light, and other factors. SUBARU recom-
mends using the AUTO position.
Other positions: The fan speed can be
adjusted in 7 steps.
NOTEWith the fan speed control dial in the
AUTO position and the airflow control
dial in the “
”, “
”,or “
”position,
the fan does not operate during engine
warm-up until the engine coolant tem-
perature exceeds approximately 1228 F
(50 8C).
& Temperature control dialThis dial is used to set the desired interior
temperature. With the dial set to your
desired temperature, the system automa-
tically adjusts the temperature of air
supplied from the outlets such that the
desired temperature is achieved and
maintained.
If the dial is turned fully counterclockwise, the system gives maximum cooling per-
formance. If the dial is turned fully clock-
wise, the system gives maximum heating
performance.
&
Airflow control dialEach dial position activates the following
air outlets.
AUTO: The airflow control is adjusted
automatically in accordance with the air
temperature inside and outside the pas-
senger compartment, the intensity of sun-
light, and other factors. SUBARU recom-
mends using the AUTO position.
(Ventilation): Instrument panel outlets(Bi-level): Instrument panel outlets and
foot outlets(Heat): Foot outlets, both side outlets of
Climate control
4-9
– CONTINUED –
4

Black plate (178,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
4-10
Climate control
the instrument panel and some through
windshield defroster outlets (A small
amount of air flows to the windshield and
both side windows to prevent fogging.)
(Heat-def): Windshield defroster out-
lets, foot outlets and both side outlets of
the instrument panel: Windshield defroster outlets and both
side outlets of the instrument panel
For details, refer to “Airflow selection”F 4-
2.
NOTEWhen the dial is placed in the “
”or
“
” position, the air inlet selection is
automatically set to “outside air ”
mode.
& Air inlet selection buttonON position (recirculation): Interior air is
recirculated inside the vehicle. Push the
air inlet selection button to the ON position
for fast cooling with the air conditioner or
when driving on a dusty road. The
indicator light will illuminate.
OFF position (outside air): Outside air is
drawn into the passenger compartment.
Push the air inlet selection button to the
OFF position when the interior has cooled
to a comfortable temperature and the road
is no longer dusty. The indicator light will
turn off.
AUTO: Turn the fan speed control dial and
airflow control dial to the AUTO position.
The air inlet control is then adjusted
automatically in accordance with the air
temperature inside and outside the pas- senger compartment, the intensity of sun-
light, and other factors. Pressing the air
inlet selection button cancels the
“AUTO”
mode. To return to “AUTO”mode, turn the
fan speed control dial or airflow control
dial to a position other than the AUTO
position. Then turn to “AUTO ”mode.
SUBARU recommends using the AUTO
position.
WARNING
Continued operation in the ON posi-
tion may fog up the windows. Switch
to the OFF position as soon as the
outside dusty condition clears.

Black plate (180,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 7
4-12
Climate control
properly and become damaged, the sys-
tem may not be able to control the interior
temperature correctly. To avoid damaging
the sensors, observe the following pre-
cautions.
– Do not subject the sensors to impact.
– Keep water away from the sensors.
– Do not cover the sensors.
The sensors are located as follows.
– Solar sensor: beside the windshield
defroster grille.
– Interior air temperature sensor: near
the ignition switch.
– Outside temperature sensor: behind
the front grille.
Operating tips for heater and
air conditioner& Cleaning ventilation grilleAlways keep the front ventilation inlet grille
free of snow, leaves, or other obstructions
to ensure efficient heating and defrosting.
Since the condenser is located in front of
the radiator, this area should be kept clean
because cooling performance is impaired
by any accumulation of insects and leaves
on the condenser.&Efficient cooling after parking
in direct sunlightAfter parking in direct sunlight, drive with
the windows open for a few minutes to
allow outside air to circulate into the heated interior. This results in quicker
cooling by the air conditioner. Keep the
windows closed during the operation of
the air conditioner for maximum cooling
efficiency.
&
Lubrication oil circulation in
the refrigerant circuitOperate the air conditioner compressor at
a low engine speed (at idle or low driving
speeds) a few minutes each month during
the off-season to circulate its oil.&Checking air conditioning
system before summer sea-
sonCheck the air conditioner unit for refriger-
ant leaks, hose conditions, and proper
operation each spring. Have the air con-
ditioning system checked by your
SUBARU dealer.&Cooling and dehumidifying in
high humidity and low tem-
perature weather conditionsUnder certain weather conditions (high
relative humidity, low temperatures, etc.) a
small amount of water vapor emission
from the air outlets may be noticed. This
condition is normal and does not indicate
any problem with the air conditioning

Black plate (13,1)
北米Model "A1130BE-A" EDITED: 2011/ 6/ 2
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
Stopping the engine ........................................... 7-10
Remote engine start system (dealer option) .............................................................. 7-10
Starting your vehicle .......................................... 7-10
Remote start safety features ............................... 7-11
Entering the vehicle while it is running via remote start ................................................................. 7-11
Entering the vehicle following remote engine start shutdown ......................................................... 7-11
Pre-heating or pre-cooling the interior of the vehicle ............................................................. 7-11
Service mode ..................................................... 7-11
Remote engine start transmitter programming and programmable feature option ..................... 7-12
System maintenance .......................................... 7-12
Manual transmission –6 speeds (STI) ............. 7-14
Selecting reverse gear ........................................ 7-15
Shifting speeds .................................................. 7-15
Driving tips ........................................................ 7-16
Manual transmission –5 speeds (except
STI) ................................................................... 7-16
Shifting speeds .................................................. 7-17
Driving tips ........................................................ 7-17
Driver’s Control Center Differential (DCCD)
(STI) .................................................................. 7-18
To change mode of driver ’s control center
differential ....................................................... 7-18
Auto mode ........................................................ 7-19
Manual mode ..................................................... 7-20
Temporary release ............................................. 7-21
SI-DRIVE (STI).................................................... 7-22
Intelligent (I) mode ............................................. 7-22
Sport (S) mode .................................................. 7-22
Sport Sharp (S#) mode. ...................................... 7-23
SI-DRIVE selector .............................................. 7-23
Limited slip differential (LSD) (STI) .................. 7-24
Power steering ................................................... 7-24
Braking ............................................................... 7-24
Braking tips ....................................................... 7-24
Brake system .................................................... 7-25
Disc brake pad wear warning indicators ............. 7-25
ABS (Anti-lock Brake System).......................... 7-26
ABS system self-check...................................... 7-26
ABS warning light .............................................. 7-26
Electronic Brake Force Distribution (EBD)
system ............................................................. 7-26
Steps to take if EBD system malfunctions ..... ..... 7-27
Vehicle Dynamics Control system.................... 7-28
Vehicle Dynamics Control system monitor..... ..... 7-29
Vehicle Dynamics Control mode switch (STI) . ..... 7-29
Vehicle Dynamics Control OFF switch (except STI) ................................................................. 7-30
Tire pressure monitoring system (TPMS)
(U.S.-spec. models). ........................................ 7-32
Parking your vehicle ......................................... 7-33
Starting and operating
7