2002 SUBARU IMPREZA oil pressure

19
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Warning and indicator light
Mark
NamePage
Seatbelt warning light3-9
AIRBAGSRS airbag system warn- ing light3-10
CHECK ENGINE warning light/Malfunction indicatorlamp3-10
Charge warning light3-11
Oil pressure warning light3-11
AT OIL temperature warn- ing light (if equipped)3-12
orABS warning light3-12
orBrake system warning light3-13
Door open warning light3-13
MarkNamePage
Front-wheel drive warning light (if equipped)3-14
Turn signal indicator lights3-14
High beam indicator light3-14
Security system indicator light (if equipped)2-12

3
3-1
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Ignition switch 3-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LOCK 3-2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ACC 3-3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON 3-3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START 3-3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key reminder chime 3-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Key interlock release (AT vehicles only) 3-4 . . . . . .
Hazard warning flasher 3-5 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Meters and gauges 3-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Speedometer 3-6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Odometer/Trip meter 3-6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tachometer 3-7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel gauge 3-7
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Temperature gauge 3-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outside temperature indicator
(if equipped) 3-9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning and indicator lights 3-9 . . . . . . . . . . . . . . . . . . . .
Seatbelt warning light and chime 3-9 . . . . . . . . . . . . . . .
SRS airbag system warning light 3-10 . . . . . . . . . . . . . . .
CHECK ENGINE warning light/ Malfunction indicator lamp 3-10 . . . . . . . . . . . . . . . . . . . .
Charge warning light 3-11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil pressure warning light 3-11 . . . . . . . . . . . . . . . . . . . . . . .
AT OIL TEMPerature warning light
(for AT vehicles) 3-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ABS warning light 3-12 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake system warning light 3-13 . . . . . . . . . . . . . . . . . . . . .
Door open warning lights 3-13 . . . . . . . . . . . . . . . . . . . . . . . . Front-wheel drive warning light
(for AT vehicles – if equipped) 3-14 . . . . . . . . . . . . . . . .
Shift position indicator (AT vehicles) 3-14 . . . . . . . . . .
Turn signal indicator lights 3-14 . . . . . . . . . . . . . . . . . . . . . .
High beam indicator light 3-14 . . . . . . . . . . . . . . . . . . . . . . . .
Clock 3-14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Light control switch 3-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Headlights 3-15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High/low beam change (dimmer) 3-16 . . . . . . . . . . . . . . .
Headlight flasher 3-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Daytime running light system 3-17 . . . . . . . . . . . . . . . . . . .
Turn signal lever 3-17 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Illumination brightness control 3-18 . . . . . . . . . . . . . . . .
Parking light switch 3-19 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fog light switch (if equipped) 3-19 . . . . . . . . . . . . . . . . . .
Wiper and washer 3-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windshield wiper and washer switches 3-21 . . . . . . .
Rear window wiper and washer switch
(if equipped) 3-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rear window defogger switch 3-24 . . . . . . . . . . . . . . . . . .
Mirrors 3-25
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inside mirror 3-25
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Outside mirrors 3-28 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tilt steering wheel 3-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Horn 3-31
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Instruments and controls

Instruments and controls
3-9
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and high revving operation when engine is not
warmed up enough should be avoided.
CAUTION
If the pointer exceeds the normal operating range, safely stop the vehicle as soon as pos- sible. See the “In case of emergency ” in chapter 9.
Outside temperature indicator (if equipped)
The outside temperature indicator shows the outside
temperature in a range from –22°F to 122 °F ( –30 °C
to 50 °C).
The indicator can give a false reading under any of the following conditions: When there is too much sun.
During idling; while running at low speeds in a
traffic jam; when the engine is restarted immediately
following a shutdown. When the actual outside 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” posi-
tion, the seatbelt warning light will come on and the
reminder chime will sound for about six seconds to
remind the driver to fasten the seatbelt.

Instruments and controls
3-11
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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 indi-
cator lamp coming on could be a loose or missing
fuel filler cap. Remove the cap and retighten it until it
clicks. Make sure nothing is interfering with the seal-
ing of the cap. Tightening the cap will not make the
CHECK ENGINE 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 immediately.
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 blink-ing and come on steadily after several driving trips.
You should have your vehicle checked by an autho-
rized SUBARU dealer immediately.
Charge warning light
If this light comes on when the engine is running, itmay indicate that the charging system is not work-
ing 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 condi-
tion but the light remains on, contact your nearest
SUBARU dealer 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 level 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.

In case of emergency
9-14
(1) Connect one jumper cable to the positive (+)
terminal on the discharged battery.
(2) Connect the other end of the jumper cable to
the positive (+) terminal of the booster battery.
(3) Connect one end of the other cable to thenegative (–) terminal of the booster battery.
(4) Connect the other end of the cable to the en-gine lifting bracket.
Make sure that the cables are not near any mov-
ing parts and that the cable clamps are not in
contact with any other metal.
5. Start the engine of the vehicle with the booster
battery and run it at moderate speed. Then start the
engine of the vehicle that has the discharged bat-
tery.
6. When finished, carefully disconnect the cables in
exactly the reverse order. Engine overheating
WARNING
Never attempt to remove the radiator cap until the engine has been shut off and has fullycooled down. When the engine is hot, thecoolant is under pressure. Removing the cap
while the engine is still hot could release aspray of boiling hot coolant, which could burn
you very seriously.
If the engine overheats, safely pull off the road and stop the vehicle in a safe place. If steam is coming from the engine compartment
Turn the engine off and get everyone away from the
vehicle until it cools down. If no steam is coming from the engine compartment
1. Keep the engine running at idling speed.
2. Open the hood to ventilate the engine compart-ment.

11
11-1
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Maintenance schedule 11-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance precautions 11-3 . . . . . . . . . . . . . . . . . . . . . . . .
Engine hood 11-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine compartment overview 11-7 . . . . . . . . . . . . . . . . .
2.5 liter model 11-7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.0 liter (Turbo) model 11-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine oil 11-9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the oil level 11-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the oil and oil filter 11-10 . . . . . . . . . . . . . . . . . . .
Recommended grade and viscosity 11-11 . . . . . . . . . . .
Recommended grade and viscosity under
severe driving conditions 11-13 . . . . . . . . . . . . . . . . . . . . . .
Cooling system 11-13 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Hose and connections 11-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine coolant 11-14 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air cleaner element 11-18 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the air cleaner element 11-18 . . . . . . . . . . . . . .
Spark plugs 11-21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended spark plugs 11-21 . . . . . . . . . . . . . . . . . . . . .
Drive belts 11-22 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual transmission oil 11-23 . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the oil level 11-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended grade and viscosity 11-24 . . . . . . . . . . .
Automatic transmission fluid 11-24 . . . . . . . . . . . . . . . . . . .
Checking the fluid level 11-24 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended fluid 11-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Front differential gear oil (AT vehicles) 11-26 . . . . . Checking the oil level 11-26
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended grade and viscosity 11-26 . . . . . . . . . . .
Rear differential gear oil 11-27 . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the gear oil level 11-27 . . . . . . . . . . . . . . . . . . . . . . .
Recommended grade and viscosity 11-28 . . . . . . . . . . .
Power steering fluid 11-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the fluid level 11-29 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended fluid 11-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake fluid 11-30 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the fluid level 11-30 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended brake fluid 11-31 . . . . . . . . . . . . . . . . . . . . . . .
Clutch fluid (MT vehicles) 11-31 . . . . . . . . . . . . . . . . . . . . . . . .
Checking the fluid level 11-31 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended clutch fluid 11-32 . . . . . . . . . . . . . . . . . . . . . .
Brake booster 11-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake pedal 11-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the brake pedal free play 11-33 . . . . . . . . . . . .
Checking the brake pedal reserve distance 11-34 . .
Clutch pedal (MT vehicles) 11-34 . . . . . . . . . . . . . . . . . . . . . .
Checking the clutch function 11-34 . . . . . . . . . . . . . . . . . . . .
Checking the clutch pedal free play 11-35 . . . . . . . . . . .
Replacement of brake pad and lining 11-35 . . . . . . . .
Breaking-in of new brake pads and linings 11-36 . . .
Parking brake stroke 11-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tires and wheels 11-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Types of tires 11-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire inspection 11-38 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tire pressures and wear 11-38 . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance and service

Maintenance and service
11-4
Always be very careful to avoid injury when
working on the vehicle. Remember that some of the materials in the vehicle may be hazard-
ous if improperly used or handled, for exam-ple, battery acid. Your vehicle should only be serviced by per-
sons fully competent to do so. Serious per-sonal injury may result to persons not experi-enced in servicing vehicles. Always use the proper tools and make cer-
tain that they are well maintained. Never get under the vehicle supported only
by a jack. Always use a safety stands to sup-port the vehicle. Never keep the engine running in a poorly
ventilated area, such as a garage or other
closed areas. Do not smoke or allow open flames around
the fuel or battery. This will cause a fire. Because the fuel system is under pressure,
replacement of the fuel filter should be per-
formed only by your SUBARU dealer. Ensure your eyes are free of oil and fluid, as
they can be harmful to your eyes. If you get one in your eyes, wash your eyes with clean
water. For your safety, you are wise to weareye protection.
Do not tamper with the wiring of the SRS
airbag system or seatbelt pretensioner sys-tem, or attempt to take its connectors apart,as that may activate the system or it can ren-der it inoperative. The wiring and connectorsof these systems are yellow for easy identifi- cation. NEVER use a circuit tester for these wiring. If your SRS airbag or seatbelt pretensionerneeds service, consult your nearest SUBARU
dealer. Before checking or servicing in the
engine compartment
Always stop the engine and set the parking
brake firmly to prevent the vehicle from mov- ing. Always let the engine cool down. Engine
parts become very hot when the engine is run-
ning and remain hot for some time after theengine is stopped. Do not spill engine oil, engine coolant, brake
fluid or any other fluid on hot engine compo-nents. This may cause a fire. Always remove the key from the ignition
switch. When the ignition switch is in the

Maintenance and service
11-13
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HGB032BB
SAE viscosity number and applicable temperature
1) 5W-30, SAE 5W-30 preferred
2) 10W-30, 10W-40
Recommended grade and viscosity under severe driving conditions
If the vehicle is used in desert areas, in areas with
very high temperatures, or used for heavy-duty ap-
plications such as a towing a trailer, use of oil with
the following grade and viscosities is recom-mended.
API classification SJ or SH: SAE viscosity No.: 30, 40, 10W-50, 20W-40,
20W-50
Cooling system
WARNING
Never attempt to remove the radiator cap until the engine has been shut off and has cooled
down completely. Since the coolant is underpressure, you may suffer serious burns from a
spray of boiling hot coolant when the cap isremoved.
CAUTION
The cooling system has been filled at the
factory with a high quality, corrosion-inhibit-
ing, year-around coolant which provides protection against freezing down to –33°F
(–36 °C). For adding, use genuine SUBARU
coolant or an equivalent: a mixture of 50%
soft water and 50% ethylene-glycol basis cool-
ant. Use of improper coolants may result in
corrosion in the cooling system. It is impor- tant to maintain protection against freezing and corrosion, even if freezing temperaturesare not expected. Never mix different kinds ofcoolant.