2005 SUBARU IMPREZA WRX engine

3-28
Instruments and controls
„
Driver’s control center differen-
tial auto indicator light (WRX-STi)
This light functions while the ignition switch is ON.
When on, it indicates that the driver’s control center
differential is set to AUTO mode. It goes off when the
driver’s control center differential’s manual mode
switch is pressed. For details, refer to Chapter 7, “Driv-
er’s Control Center Differential (DCCD) (WRX-STi)”. „ Driver’s control center differential indi-
cator lights (WRX-STi)
These indicator lights show the current differential-ac-
tion limiting factor (torque-distribution ratio between the front and rear wheels) of the center differential.
The bottom indicator light “ ” flashes in the event of
failure of the driver’s control center differential. For de-
tails, refer to Chapter 7, “Driver’s Control Center Dif-
ferential (DCCD) (WRX-STi)”. „
Headlight indicator light (WRX-
STi)
This light comes on when the headlight switch is
placed in the “ ” or “ ” position. „ REV indicator light (WRX-STi)
This light comes on when the engine speed reaches a
level set by the user and when the tachometer needle
enters the red zone.
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3-32
Instruments and controls
more than just a few seconds.
„ Daytime running light system (except
U.S.-spec. WRX-STi)
The low beam headlights will automatically come on at
reduced brightness when the engine has started, un-
der the following conditions: y The parking brake is fully released.
y The light switch is in the “OFF” or “ ” position.
y The automatic transmission selector lever is set at
other than the “P” position.
The tail lights, parking lights, and side marker
lights are not turned on by the daytime running
light system. The light switch must always be
turned to the “ ” position when it is dark
outside.
Turn signal lever
1) Right turn
2) Left turn
3) Lane change for right
4) Lane change for left
To activate the right turn signal, push the turn signal le-
ver up. To activate the left turn signal, push the turn
signal lever down. When the turn is finished, the lever
will return automatically. If the lever does not return af-
ter cornering, return the lever to the neutral position by
hand.
To signal a lane change, push the turn signal lever up
1 2 3
4
HS3027BB

4-1
4
Climate control
Ventilator ....................................................... 4-2 Air flow selection .............................................. 4-2
Center and side ventilators .............................. 4-3
Manual climate control system (if equipped) .............................................. 4-4Control panel ..................................................... 4-4
Heater operation ............................................... 4-6
Air conditioner operation (if equipped) .......... 4-9
Automatic climate control system (if equipped) .............................................. 4-11Control panel ..................................................... 4-11
To use as full-automatic climate control system ............................................................. 4-12
To use as semi-automatic climate control
system ............................................................. 4-12
Fan speed control dial ...................................... 4-12
Temperature control dial .................................. 4-13
Air flow control dial .......................................... 4-13
Air inlet selection button .................................. 4-14
Air conditioner button ...................................... 4-15
Temperature sensors ....................................... 4-16
Operating tips for heater and air conditioner ........................................... 4-17Cleaning ventilation grille ................................ 4-17
Efficient cooling after parking in direct sunlight ........................................................... 4-17
Lubrication oil circulation in the refrigerant circuit .............................................................. 4-17
Checking air conditioning system
before summer season .................................. 4-17 Cooling and dehumidifying in high humidity
and low temperature weather conditions .... 4-18
Air conditioner compressor shut-off when engine is heavily loaded ...................... 4-18
Refrigerant for your climate control system .. 4-18
Air filtration system (Turbo model only) ..... 4-18 Replacing an air filter ....................................... 4-19

4-5
Climate control
– CONTINUED –
NOTE yYou 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 de-
fogging the windshield.
Defogging with the air inlet selection lever set in
the “ ” position provides better defogging
performance than in the “ ” position.y When the dial is placed in the “ ” or “ ”
position, the air conditioner compressor operates
automatically regardless of the position of the air
conditioner button to defog the windshield quick- ly.
However the indicator on the air conditioner but-
ton will not come on.
Also, you cannot stop the air conditioner com-
pressor by pressing the air conditioner button. T
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 op-
eration to turn on the air conditioner. The indicator light
will come on.
Push it again to turn off the air conditioner.T Air inlet selection lever
(Recirculation): Interior air is recirculated inside
the vehicle.
Place the air inlet selection lever in the “ ” posi-
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4-11
Climate control
– CONTINUED –
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 de-
sired, be used as a semi-automatic climate control system.
When it is used as a full-automatic climate control sys-
tem, the outlet air temperature, fan speed, air flow dis-
tribution, air inlet control, and air conditioner compres-
sor operation are all automatically controlled to main-
tain a constant, comfortable temperature inside the vehicle.
NOTE yOperate the automatic climate control system
when the engine is running. y When the engine coolant is cold, the blower
does not run.y In the “AUTO” mode, when the air temperature
in the passenger compartment is sufficiently cool,
the air conditioner compressor does not operate.
For efficient defogging or dehumidifying in cold
weather, press the “A/C” button to operate the air
conditioner compressor. y 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” indicator light on
the control panel comes on. „
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 win- dow defogger button” in chapter 3.)
65 85 75
12 3
654
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4-13
Climate control
– CONTINUED –
NOTE
With the fan speed control dial in the AUTO posi-
tion and the air flow control dial in the “ ”,
“ ”, or “ ” position, the fan does not oper-
ate during engine warmup until the engine coolant
temperature exceeds approx. 122 °F (50 °C).
„ Temperature control dial
This dial is used to set the desired interior tempera-
ture. With the dial set to your desired temperature, the
system automatically adjusts the temperature of air
supplied from the outlets such that the desired temper-
ature is achieved and maintained. If the dial is turned fully counterclockwise, the system
gives maximum cooling performance. If the dial is
turned fully clockwise, the system gives maximum
heating performance. „
Air flow control dial
This dial has the following six positions. The outlets
from which air is supplied in each position are as fol-
lows:AUTO: The air flow control is adjusted automatically in
accordance with the air temperature inside and out-
side the passenger compartment, the intensity of sun-
light, and other factors. SUBARU recommends using
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UG3046CA

4-18
Climate control
„
Cooling and dehumidifying in high hu-
midity and low temperature weather
conditions
Under certain weather conditions (high relative humid-
ity, 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 system. „ Air conditioner compressor shut-off
when engine is heavily loaded
To improve acceleration and gas mileage, the air con-
ditioner compressor is designed to temporarily shut off
during air conditioner operation whenever the acceler-
ator is fully depressed such as during rapid accelera-
tion or when driving on a steep upgrade. „ Refrigerant for your climate control
system
Your air conditioner uses ozone friendly refrigerant
HFC134a. Therefore, 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. Air filtration system (Turbo model
only)
If your vehicle’s air conditioning system is equipped
with an air filtration system, replace the filter element
according to the replacement schedule shown below.
This schedule should be followed to maintain the fil-
ter’s dust collection ability. Under extremely dusty con-
ditions, the filter should be replaced more frequently. It
is recommended that you have your filter checked or
replaced by your SUBARU dealer. For replacement,
use only a genuine SUBARU air filter kit.
Replacement schedule:
Every 12 months or 7,500 miles (12,000 km) whichev-
er comes first

6-9
Interior equipment
– CONTINUED –
yDo not place any foreign objects, especially
metal ones such as coins or aluminum foil, into
the accessory power outlet. That could cause a
short circuit. Always put the cap on the acces-
sory power outlet when it is not in use.y Use only electrical appliances which are de-
signed for 12V DC and which consume less
than 120W. Overloading the accessory power
outlet can cause a short circuit. Do not use dou-
ble adapters or more than one electrical appli-
ance.y If the plug on your electric appliance is either
too loose or too tight for the accessory power
outlet, this can result in a poor contact or cause
the plug to get stuck. Only use plugs that fit
properly. y Use of an electric appliance in the accessory
power outlet for a long period of time while the
engine is not running can cause battery dis-
charge.y Before driving your vehicle, make sure that
the plug and the cord on your electrical appli-ance will not interfere with your shifting gears
and operating the accelerator and brake pedals.
If they do, do not use the electrical appliance
while driving.
Cigarette lighter socket
A cigarette lighter socket can be found behind the ash-
tray lid under the climate controls. Push gently on the
lid to open it. A cigarette lighter plug is an optional ac-
cessory. It is available from your SUBARU dealer.
The cigarette lighter socket may also be used as a
power source for an in-car use electrical appliance.
y The electrical power outlet located on the
lower part of the instrument panel is originally
designed to use a genuine SUBARU cigarette
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