2003 SUBARU LEGACY air conditioning

3
Instruments and controls3-29
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CONTINUED –
Rear window defogger switch
CAUTION
Do not use sharp instruments or window cleaner containing
abrasives to clean the inner surface of the rear window. They may
damage the conductors printed on the window. To prevent the battery from being discharged, do not operate
the defogger continuously for any longer than necessary.
The rear window defogger operates only when the ignition switch is inthe “ON” position.
The rear window defogger switch is located on the climate control panel.
The defogger will automatically shut off after about 15 minutes. If the win-
dow clears before that time, push the switch to turn it off. It also turns off
when the ignition switch is turned to the “ACC” or “LOCK” position. If
defrosting or defogging is desired when you restart your vehicle, you
have to push the switch to turn it on again.
For vehicles with manual heating and air conditioning systems
HB5009BB
To turn on the defogger, push the switch. To turn it off, push the switch again.
The indicator light located on the switch lights up while the rear win-dow defogger is operating.

3
Instruments and controls3-33
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CONTINUED –
n
Photosensors
HB6020BA
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 other simi-
lar items. Periodically wipe the sensors clean using a piece of dry soft
cotton cloth or an applicator. nCompass calibration
1. For optimum calibration, switch off all nonessential electrical ac-
cessories (rear window defogger, heater/air conditioning system,
spotlight, etc.) and ensure all doors are shut.
2. Drive to an open, level area away from large metallic objects or
structures and make certain the ignition switch is in the “ON” position.
3. Press and hold the left button for 3 seconds then release, and thecompass will enter the calibration mode. “CAL” and direction will be
displayed.
4. Drive slowly in a circle until “CAL” disappears from the display
(about two or three circles).
5. The compass is now calibrated. Further calibration is not required.
The compass will automatically calibrate from this point forward.

4
Climate control
Ventilator4-2
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Manual heating and air conditioning system 4-4 . . . . . . . . . . . . . . . . . . . .
Heater operation 4-7
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Air conditioner operation 4-10
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Automatic climate control system (if equipped) 4-12 . . . . . . . . . . . . . . .
Operating tips for heater and air conditioner 4-20 . . . . . . . . . . . . . . . . . . .
Air filtration system (if equipped) 4-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-4
Manual heating and air conditioning system
Control panel
HB5004BC
1. Temperature control dial
2. Fan speed control dial
3. Air flow control dial
4. Air conditioner button
5. Air inlet selection button
6. Rear window defogger button (Refer to “Rear window defogger ” in
chapter 3.) n Temperature control dial
This dial regulates the temperature of air flow from the air outlets over
a range from the blue area (cool) to red area (warm). n 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. n 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 footoutlets.

4-18
HB4032BB
Select the air inlet by pushing the air inlet selection switch.
: Interior air recirculates inside the passenger’s compartment.
Use this position when quickly warming up the passenger
compartment or cooling it down or when preventing outside
air from entering the passenger compartment from the out-
side air. The indicator light “
” on the control panel
comes on when this switch is pushed.
: Outside air is drawn into the passenger compartment. When the air conditioning system is operated in the “AUTO” mode,
this position is selected automatically. The indicator light “
” on the control panel comes on when this switch is
pushed.
n Temperature control dial
HB4033BB

4
Climate control4-21
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CONTINUED –
closed during the operation of the air conditioner for maximum cool-
ing efficiency.
Lubrication oil circulation in the refrigerant circuit
Operate the air conditioner compressor at a low engine speed (at idle
or low driving speeds) a few minutes each month during the off-sea-
son to circulate its oil. Checking air conditioning system before summer season
Check the air conditioner unit for refrigerant leaks, hose conditions,
and proper operation each spring. This check is best performed by
your SUBARU dealer. Cooling and dehumidifying in high humidity and low tempera- ture weather condition
Under certain weather conditions (high relative humidity, low tempera-
tures, 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 system. Air conditioner compressor shut-off when engine is heavily loaded
To improve acceleration and gas mileage, the air conditioner com-
pressor is designed to temporarily shut off during air conditioner op-
eration whenever the accelerator is fully depressed such as during
rapid accerelation or when driving on a steep upgrade. Refrigerant for your climate control system
Your air conditioner uses ozone friendly refrigerant HFC134a. There-
fore, the method of adding, changing or checking the refrigerant is
different from the method for CFC12 (freon). Consult your SUBARU
dealer for service. Repairs needed as a result of using the wrong
refrigerant are not covered under warranty.

4-22Air filtration system (if equipped) If your vehicle
’s air conditioning system is equipped with a optional air
filtration system, replace the filter element according to the replacement
schedule shown below. This schedule should be followed to maintain the
filter’ s dust collection ability. Under extremely dusty conditions, the filter
should be replaced more frequently. Since the filter element is a viscous
type, it is unnecessary to clean or wash the element. Have your filter
checked or replaced by your SUBARU dealer.
Replacement schedule: Every 12 months or 9,300 miles (15,000 km) whichever comes first
NOTE The filter can influence the air conditioning, heating and defroster performance if not properly maintained.

14-6M
Main fuse
11-54
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Maintenance precautions 11-3
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Maintenance schedule 11-3
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Maintenance tools 9-25
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Manual heating and air conditioning system 4-4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual transmission 7-12
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Manual transmission oil 11-23
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Map light (if equipped) 6-3
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Map light, dome light, luggage compartment light and door step light 11-65
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McIntosh audio set (if equipped) 5-26 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Meters and gauges 3-7
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Mirrors 3-31
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Moonroof (if equipped) 2-30
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Moonroof — if the moonroof cannot be closed 9-24 . . . . . . . . . . . . . . . . . . . . . . . . . . .
N
New vehicle break-in driving – the first 1,000 miles (1,600 km) 8-2 . . . . . .
O
Odometer/Trip meter 3-7
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Off road driving 8-7
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Oil pressure warning light 3-13
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OnStar personal calling 6-17
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OnStar services 6-15
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OnStar subscription plans 6-14
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OnStar  system (if equipped) 6-13
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OnStar system limitations 6-18
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OnStar virtual advisor 6-18
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Operating tips for heater and air conditioner 4-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside mirrors 3-34
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Outside temperature indicator (if equipped) 3-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overhead console (if equipped) 6-7
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