light SUBARU IMPREZA WRX 2007 3.G Manual Online

Ventilator.............................................................. 4-2
Air flow 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 (if equipped) ...................................................... 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
Air flow control dial ............................................. 4-9 Air inlet selection button
.................................... 4-10
Air conditioner button ........................................ 4-10
Temperature sensors ......................................... 4-11
Operating tips for heater and air conditioner ...................................................... 4-11
Cleaning ventilation grille ................................... 4-11
Efficient cooling after parking in direct sunlight ........................................................... 4-11
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 .............................................. 4-12
Refrigerant for your climate control system ... ..... 4-12
Air filtration system ........................................... 4-12
Replacing the air filter ........................................ 4-13Climate control
4

4-4Climate 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 4
fan speeds. ! Air flow control dial
This dial has the following five positions:
: Air flows through the instrument panel
outlets.
: Air flows through the instrument panel
outlets and the foot outlets.
: Air flows through the foot outlets and
some through the windshield defroster outlets.
: Air flows through the windshield
defroster outlets and foot outlets.
: Air flows through the windshield
defroster outlets. NOTE . You will find the notation “USE WITH
” on the air flow control dial plate.
This is intended to remind you to set
the air inlet selection lever in the “
”
position when defogging the wind- shield.
Defogging with the air inlet selection
lever set in the “
”position provides better defogging performance than in the
“
”position.
. When the dial is placed in the “”
or “”position, the air conditioner
compressor operates automatically re-
gardless of the position of the air
conditioner button to defog the wind-
shield quickly.
However the indicator on the air con-
ditioner button will not come on.
Also, you cannot stop the air condi-
tioner compressor by pressing the air
conditioner button. ! Air conditioner button (if equipped)
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 comeon.
Push it again to turn off the air conditioner. !
Air inlet selection lever
(Recirculation): Interior air is recircu-
lated inside the vehicle.
Place the air inlet selection lever in the “
” position for fast cooling with the air
conditioner or when driving on a dusty road.
(Outside air): Outside air is drawn into
the passenger compartment.
Place the air inlet selection lever in the “
” position when the interior has cooled
to a comfortable temperature and the road
is no longer dusty.
WARNING
Continued operation in the “
”
position may fog up the windows.
Switch to the “
”position as soon
as the outside dusty condition clears.

&Heater operation
! Defrosting or defogging the wind- shield
To direct warm air to the windshield and
front door windows:
1. Set the air inlet selection lever to the “
”position.
2. Set the air flow control dial to the “
”
position.
3. Turn the temperature control dial all
the way to the right.
4. Set the fan speed control dial to the
highest speed.
If your vehicle is equipped with an air
conditioner, when the “
”or “”position
is selected, the air conditioner compressor
automatically operates regardless of the position of the air conditioner button to
defog the windshield quickly.
However, the air conditioner indicator light
does not come on at this time.
NOTE
Warm air also comes out from the right
and left air outlets. To stop warm air
flow from these outlets, turn the corre-
sponding knob clockwise. ! Heating and defrosting
To direct warm air toward the floor and the windshield:
1. Set the air inlet selection lever to the “
”position.
2. Set the air flow control dial to the “
”
position.
3. Set the temperature control dial to the most comfortable level.
4. Set the fan speed control dial to the
desired speed.
If your vehicle is equipped with an air
conditioner, when the
“
”or “”position
is selected, the air conditioner compressor
automatically operates regardless of the
position of the air conditioner button to
defog the windshield quickly.
However, the air conditioner indicator light
does not come on at this time.
NOTE
Warm air also comes out from the right
and left air outlets. To stop warm air
flow from these outlets, turn the corre-
sponding knob clockwise. Climate control
4-5
– CONTINUED –

4-6Climate control
! Heating
To direct warm air toward the floor:
1. Set the air inlet selection lever to the “
”position.
2. Set the air flow control dial to the “
”
position.
3. Set the temperature control dial to the
most comfortable level.
4. Set the fan speed control dial to the
desired speed.
NOTE
Warm air also comes out from the right
and left air outlets. To stop warm air
flow from these outlets, turn the corre-
sponding knob clockwise. !
Bi-level heating
This setting allows you to direct air of
different temperatures from the instrument
panel and foot outlets. The air from the
foot outlets is slightly warmer than from
the instrument panel outlets.
1. Set the air inlet selection lever to the “
”position.
2. Set the air flow control dial to the “
”
position.
3. Set the temperature control dial to the
desired temperature level.
4. Set the fan speed control dial to the
desired speed.
Setting the temperature control dial fully
turned to the red area or blue area
decreases the temperature difference
between the air from the instrument panel outlets and the air from the foot outlets. !
Ventilation
To force outside air through the instrument
panel outlets:
1. Set the air inlet selection lever to the “
”position.
2. Set the air flow control dial to the “
”
position.
3. Set the temperature control dial all the
way left.
4. Set the fan speed control dial to the
desired speed.
When driving on a dusty road, set the air
inlet selection lever to the “
”position.

WARNING
Continued operation in the “
”
position may fog up the windows.
Switch to the “
”position as soon
as the outside dusty condition clears.
& Air conditioner operation (if equipped)
! Cooling or dehumidifying
For 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 lever to the “
”position. 2. Set the air flow 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
desired speed. ! Defrosting or defogging
To direct warm air to the windshield and
front door windows:
1. Set the air inlet selection lever to the “
”position.
2. Set the air outlet control dial to the “
” position.
3. Set the temperature control dial to the
red side. 4. Set the fan speed control dial at the
highest speed.
The air conditioner compressor automati-
cally operates when the air flow control
dial set in the
“
”or “”position to
provide better defogging performance.
However, the air conditioner indicator light
does not come on at this time. Climate control
4-7

4-8Climate control
Automatic climate control
system (if equipped)
Although this climate control system can
be used as a full-automatic climate control
system, it can also, if desired, be used as
a semi-automatic climate control system.
When it is used as a full-automatic climate
control system, the outlet air temperature,
fan speed, air flow distribution, air inlet
control, and air conditioner compressor
operation are all automatically controlled
to maintain a constant, comfortable tem-
perature inside the vehicle. NOTE .Operate the automatic climate con-
trol system when the engine is running. . When the engine coolant is cold, the
blower does not run.. In the “AUTO ”mode, when the air
temperature in the passenger compart-
ment is sufficiently cool, the air condi-
tioner compressor does not operate.
For efficient defogging or dehumidify-
ing in cold weather, press the “A/C ”
button to operate the air conditioner
compressor.. Even when cooling is not necessary,
setting the temperature much lower
than the current outlet air temperature
turns on the air conditioner compres- sor automatically and the
“A/C ”indi-
cator light on the control panel comeson. & Control panel
1) Air flow control dial
2) Fan speed control dial
3) Temperature control dial
4) Air conditioner button
5) Air inlet selection button
6) Rear window defogger button (Refer to
the“Rear window defogger button ”sec-
tion in chapter 3.)
& To use as full-automatic cli-
mate control system
Place the temperature control dial in the
position for your desired temperature, then
set the other dials and buttons as de- scribed in the following. The system
’s
functions will then switch to AUTO mode
and be controlled automatically. . Air flow control dial: AUTO position
. Fan speed control dial: AUTO position
. Air inlet selection button: Press for at
least 1 second. (Indicator will flash twice.). Air conditioner button: Press for at least
1 second. (Indicator will flash twice.)
& To use as semi-automatic
climate control system
Each function can be individually set to
AUTO mode independently of the others.
Any function set to AUTO mode is con-
trolled automatically. Any function not set
to AUTO mode can be manually adjusted
as desired.
The temperature can be set within a range
of 65 to 85 8F (20 to 30 8C).

&Fan speed control dial
The 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 25 steps. NOTE
With the fan speed control dial in the
AUTO position and the air flow control
dial in the
“
”, “”,or “”position,
the fan does not operate during engine
warm-up until the engine coolant tem-
perature exceeds approx. 122 8F (50 8C).
& Temperature control dial
This 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 andmaintained.
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 heatingperformance. &
Air flow control dial
This dial has the following six positions.
The outlets from which air is supplied in
each position are as follows: AUTO: The air flow 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.
: Instrument panel outlets
: Instrument panel outlets and foot
outlets
: Foot outlets and windshield defroster Climate control
4-9
– CONTINUED –

4-10Climate control
outlets (relatively little air from windshield
defroster outlets)
: Windshield defroster outlets and foot
outlets
: Windshield defroster outlets
NOTE
When the dial is placed in the “
”or
“” position, the air conditioner com-
pressor operates automatically to de-
fog the windshield quickly. At the same
time, the air inlet selection is automa-
tically set to “outside air ”mode.
& Air inlet selection button
ON 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 come on.
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
go off. AUTO: When the air inlet selection button
is pressed for at least one second, the
indicator flashes twice. The air inlet control
is then adjusted automatically in accor-
dance with the air temperature inside and
outside the passenger compartment, the
intensity of sunlight, and other factors.
Pressing the air inlet selection button
cancels the “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. &
Air conditioner button
The button ’s positions and their functions
are as follows: ON: The air conditioner operates while the
fan is running.
Push the button to select this position. The
indicator light will illuminate. OFF: The air conditioner does not oper-
ate.
Push the button again to select this
position. The indicator light will go off. AUTO: When the button is pressed for at
least one second, the indicator flashes
twice. The air conditioner compressor
operation is then adjusted automatically
in accordance with the air temperature
inside and outside the passenger com-
partment, the intensity of sunlight, and

other factors. Pressing the button cancels the“AUTO ”mode. SUBARU recommends
using the AUTO position.
NOTE
The air conditioner ’s compressor does
not operate with an outside tempera-
ture of 32 8F(0 8C) or lower.
& Temperature sensors
1) Interior air temperature sensor
2) Solar sensor
The automatic climate control system
employs several sensors. These sensors
are delicate. If they are not treated
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 windshield defros-
ter grille– Interior air temperature sensor: beside
the fan speed control dial– Outside temperature sensor: behind
front grille. Operating tips for heater and
air conditioner &
Cleaning ventilation grille
Always keep the front ventilator 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 sunlight
After parking in direct sunlight, drive with
the windows open for a few minutes to
allow outside air to circulate into the Climate control
4-11
– CONTINUED –

&Replacing the air filter
1. Remove the glove box.
(1) Open the glove box.
(2) Remove the nine screws and the
one clip securing the glove box.
(3) Disconnect the glove box light
connector.
2. Unhook the hooks of the air filter cover
and remove the cover.
3. Draw out the air filter element.
4. Replace the air filter element with new one.
CAUTION
The arrow mark on the filter must
point down.
5. Reinstall the air filter cover.
6. Connect the connector, and reinstall
the glove box.
7. Close the glove box. Climate control
4-13
– CONTINUED –