2004 SUBARU IMPREZA engine oil

6
Safety precautions when driving !Seatbelt and SRS airbag
"All persons in the vehicle should fasten their
seatbelts BEFORE the vehicle starts to move.
Otherwise, the possibility of serious injury be-
comes greater in the event of a sudden stop or
accident. " To obtain maximum protection in the event of
an accident, the driver and all passengers in the
vehicle should always wear seatbelts when the
vehicle is moving. The SRS (Supplemental Re-
straint System) airbag does not do away with
the need to fasten seatbelts. In combination
with the seatbelts, it offers the best combined
protection in case of a serious accident.
Not wearing a seatbelt increases the chance of
severe injury or death in a crash even when the
car has the SRS airbag. " The SRS airbags deploy with considerable
speed and force. Occupants who are out of
proper position when the SRS airbag deploys
could suffer very serious injuries. Because the
SRS airbag needs enough space for deploy-
Windshield defroster
Rear window defogger/Outside mirror
defogger
Air recirculation
Outside air
Engine oilWasher
Mark Name

23
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CONTINUED –
!Warning and indicator light
Mark Name Page
Seatbelt warning light 3-19
SRS airbag system warning light 3-20
CHECK ENGINE warning light/
Malfunction indicator lamp 3-20
Charge warning light 3-21
Oil pressure warning light 3-21
AT OIL temperature warning light (if equipped) 3-22
or ABS warning light 3-23
or Brake system warning light 3-24
Door open warning light 3-25
Front-wheel drive warning light
(if equipped) 3-25
Turn signal indicator lights 3-26
High beam indicator light 3-26
Security system indicator light (if equipped) 2-14
Intercooler water spray warn-
ing light (if equipped) 3-25
Light indicator light (if equipped) 3-27
Cruise control indicator light (if equipped) 3-26
Cruise control set indicator light 3-26
REV indicator light (if equipped) 3-27
Rear differential oil tempera-
ture warning light (if equipped) 3-22
Electronic driver’s control cen-
ter differential auto indicator (if equipped) 3-26
Mark Name Page

3-1
3
Instruments and controls
Ignition switch .............................................. 3-3 LOCK .................................................................. 3-3
ACC .................................................................... 3-4
ON ....................................................................... 3-4
START ................................................................ 3-4
Key reminder chime .......................................... 3-4
Ignition switch light (if equipped) .................... 3-5
Key interlock release (AT vehicles only) ........ 3-5
Hazard warning flasher ................................ 3-6
Meters and gauges (WRX-STi) .................... 3-7 Combination meter illumination ...................... 3-7
Cancelling sequential illumination of the combination meter ......................................... 3-7
Speedometer ..................................................... 3-7
Odometer/Trip meter ........................................ 3-8
Tachometer ........................................................ 3-9
Fuel gauge ......................................................... 3-9
Temperature gauge ........................................... 3-10
Ambient temperature gauge ............................ 3-11
REV indicator light and buzzer (WRX-STi) . 3-12 Setting the alarm-level engine speed .............. 3-13
Deactivating the REV alarm system ................ 3-14
Meters and gauges (Except WRX-STi) ........ 3-15 Speedometer ..................................................... 3-15
Odometer/Trip meter ........................................ 3-15
Tachometer ........................................................ 3-16
Fuel gauge ......................................................... 3-16
Temperature gauge ........................................... 3-17
Ambient temperature gauge (if equipped) ...... 3-18
Warning and indicator lights ....................... 3-19 Seatbelt warning light and chime .................... 3-19 SRS airbag system warning light .................... 3-20
CHECK ENGINE warning light/Malfunction
indicator lamp ................................................. 3-20
Charge warning light ........................................ 3-21
Oil pressure warning light ............................... 3-21
AT OIL TEMPerature warning light (for AT vehicles) ............................................. 3-22
Rear differential oil temperature warning light
(WRX-STi) ........................................................ 3-22
ABS warning light ............................................. 3-23
Brake system warning light ............................. 3-24
Door open warning lights ................................ 3-25
Front-wheel drive warning light (for AT vehicles – if equipped) ...................... 3-25
Intercooler water spray warning light
(WRX-STi) ........................................................ 3-25
Selector lever position indicator (AT vehicles) 3-26
Turn signal indicator lights .............................. 3-26
High beam indicator light ................................. 3-26
Cruise control indicator light ........................... 3-26
Cruise control set indicator light .................... 3-26
Driver’s control center differential auto indicator light (WRX-STi) ............................... 3-26
Driver’s control center differential indicator
lights (WRX-STi) ............................................. 3-27
Headlight indicator light (WRX-STi) ................ 3-27
REV indicator light (WRX-STi) ......................... 3-27
Clock .............................................................. 3-28
Light control switch ...................................... 3-29 Headlights ......................................................... 3-29
High/low beam change (dimmer) .................... 3-30
Headlight flasher ............................................... 3-30

3-19
Instruments and controls
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ing a shutdown. "When the actual ambient temperature falls outside
the specified indicator range.Warning and indicator lights
Several of the warning and indicator lights come on
momentarily and then go out when the ignition switch
is initially turned to the “ON” position. This permits
checking the operation of the bulbs.
Apply the parking brake and turn the ignition switch to
the “ON” position. The following lights come on:
Seatbelt warning light
SRS airbag system warning light
CHECK ENGINE warning light/Malfunction indica- tor lamp
Charge warning light
Oil pressure warning light
AT OIL temperature warning light (AT vehicles)ABS warning light
Brake system warning light
If any lights fail to come on, it indicates a burned-out
bulb or a malfunction of the corresponding system.
Consult your authorized SUBARU dealer for repair. ! Seatbelt warning light and chime
When the ignition switch is turned to the “ON” position,
the seatbelt warning light will come on and the remind-
er chime will sound for about six seconds to remind the

3-21
Instruments and controls
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NOTE
This light also comes on when the fuel filler cap is
not tightened until it clicks.
If you have recently refueled your vehicle, the cause of
the CHECK ENGINE warning light/malfunction indica-
tor lamp coming on could be a loose or missing fuel fill-
er cap. Remove the cap and retighten it until it clicks.
Make sure nothing is interfering with the sealing of the
cap. Tightening the cap will not make the CHECK EN-
GINE warning light turn off immediately. It may take
several driving trips. If the light does not go out, take
your vehicle to your authorized SUBARU dealer im-
mediately. !If the light is blinking:
If the light is blinking while driving, an engine misfire
condition has been detected which may damage the
emission control system.
To prevent serious damage to the emission control
system, you should do the following: "Reduce vehicle speed.
" Avoid hard acceleration.
" Avoid steep uphill grades.
" Reduce the amount of cargo, if possible.
" Stop towing a trailer as soon as possible.
The CHECK ENGINE warning light may stop blinking and come on steadily after several driving trips. You
should have your vehicle checked by an authorized
SUBARU dealer immediately. !
Charge warning light
If this light comes on when the engine is running, it
may indicate that the charging system is not working
properly.
If the light comes on while driving or does not go out
after the engine starts, stop the engine at the first safe
opportunity and check the alternator belt. If the belt is
loose, broken or if the belt is in good condition but the
light remains on, contact your nearest SUBARU deal-
er immediately. ! Oil pressure warning light
If this light comes on when the engine is running, it
may indicate that the engine oil pressure is low and the
lubricating system is not working properly.
If the light comes on while driving or does not go out
after the engine starts, stop the engine at the first safe
opportunity and check the engine oil level. If the oil lev-
el is low, add oil immediately. If the engine oil is at the
proper level but the light remains on, contact your
nearest SUBARU dealer immediately.

3-22
Instruments and controls
Do not operate the engine with the oil pressure
warning light on. This may cause serious en-
gine damage.
! AT OIL TEMPerature warning
light (for AT vehicles)
If this light comes on when the engine is running, it
may indicate that the automatic transmission fluid tem-
perature is too hot.
If the light comes on while driving, it is unnecessary to
stop the vehicle, but avoid driving up steep grades or
in stop and go traffic. ! Automatic transmission control system warn-
ing
If the light flashes after the engine starts, it may indi-
cate that the automatic transmission control system is
not working properly. Contact your nearest SUBARU
dealer for service immediately. !
Rear differential oil temperature
warning light (WRX-STi)
Reduce vehicle speed and park the vehicle in a
safe place as soon as possible if the R.DIFF
TEMP light comes on. Continued driving with
this light on can damage the rear differential
and other parts of the powertrain.
If this light comes on 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 ra-
tio setting and adopts its minimum ratio.
If the light comes on while driving, reduce vehicle
speed and stop the vehicle at the nearest safe place.
Park the vehicle for several minutes. After the light
goes out, you can start driving.
If the light does not go out, contact the neares
SUBARU dealer for service.
NOTE " If the tire pressures are not correct and/or the

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Instruments and controls
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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 tem-
perature. "The rear differential oil will deteriorate if its tem-
perature increases enough for the rear differential
oil temperature warning light to come on. It is ad-
visable to have the rear differential oil replaced as
soon as possible. ! ABS warning light
The ABS warning light comes on when the ignition
switch is turned to the “ON” position and goes out after
about two seconds.
This is an indication that the ABS system is working
properly.
If the warning light behaves as follows, the ABS
system may not work properly.
When the warning light is on, the ABS function
shuts down; however, the conventional brake
system continues to operate normally." The warning light does not come on when the
ignition switch is turned to the “ON” position." The warning light comes on when the ignition switch is turned to the “ON” position, but it
does not go out even when the vehicle speed
exceeds approximately 8 mph (12 km/h)."
The warning light comes on during driving.
If these occur, have the ABS system repaired at
the first available opportunity by your SUBARU
dealer.
With a vehicle equipped with an EBD system, the ABS
warning light comes on together with the brake system
warning light if the EBD system becomes faulty. For
further details of the EBD system fault warning, refer to “Brake system warning light”.
NOTE
If the warning light behavior is as described be-
low, the ABS system may be considered normal." The warning light comes on right after the en-
gine is started but goes out immediately, remain-
ing off." The warning light remains on after the engine
has been started, but it goes out when the vehicle
speed reaches about 8 mph (12 km/h)." The warning light comes on during driving, but
it goes out immediately and remains off.
When driving with an insufficient battery voltage such
(U.S.) (Canada)

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) 4-4 Control panel ..................................................... 4-4
Heater operation ............................................... 4-6
Air conditioner operation (if equipped) .......... 4-9
Semi-automatic climate control system (if equipped) ............................................... 4-11Control panel ..................................................... 4-11
Operating method ............................................. 4-14
Temperature sensors ....................................... 4-18
Operating tips for heater and air conditioner 4-19 Cleaning ventilation grille ................................ 4-19
Efficient cooling after parking in direct sunlight ........................................................... 4-19
Lubrication oil circulation in the refrigerant
circuit .............................................................. 4-19
Checking air conditioning system before summer season .............................................. 4-19
Cooling and dehumidifying in high humidity and low temperature weather conditions .... 4-20
Air conditioner compressor shut-off when
engine is heavily loaded ................................ 4-20
Refrigerant for your climate control system .. 4-20
Air filtration system (if equipped) ................ 4-20 Replacing an air filter ....................................... 4-21