2003 SUBARU IMPREZA oil level

Instruments and controls
3-12
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.

Starting and operating
7-8
mination is observed, there is no stored diagnostic
trouble codes, and the OBD system readiness moni-
tors are complete. A vehicle fails
the OBD inspection if the “CHECK
ENGINE ” warning light/MIL is not properly operating
or there is one or more diagnostic trouble codes
stored in vehicle ’s computer with the “CHECK
ENGINE ” warning light/MIL illuminated.
A state emission inspection may reject (not pass
or fail) a vehicle if the number of OBD system readi- ness monitors “Not Ready ” is greater than three.
Under this condition, the vehicle operator should be instructed to drive his/her vehicle for a few days to
set the monitors and return for an emission re-in-spection. Owners of rejected or failing vehicles should con-
tact their Subaru Dealer for service. Preparing to drive
You should perform the following checks and adjust-
ments every day before you start driving.
1. Check that all windows, mirrors, and lights are
clean and unobstructed.
2. Check the appearance and condition of the tires.
Also check tires for proper inflation.
3. Look under the vehicle for any sign of leaks.
4. Check that the hood, trunk and rear gate are fullyclosed.
5. Check the adjustment of the seat.
6. Check the adjustment of the inside and outside
mirrors.
7. Fasten your seatbelt. Check that your passen-gers have fastened their seatbelts.
8. Check the operation of the warning and indicator
lights when the ignition switch is turned to the
“ON”
position.
9. Check the gauges, indicator and warning lights
after starting the engine. NOTE Engine oil, engine coolant, brake fluid, washer
fluid and other fluid levels should be checked
daily, weekly or at fuel stops.

In case of emergency
9-22
tion.
1. Shift the selector lever into the “P” position for au-
tomatic transmission vehicles or “1st” for manual
transmission vehicles.
2. Pull up the parking brake lever firmly.
3. Secure the vehicle onto the carrier properly with safety chains. Each of safety chain should be
equally tightened and care must be taken not to pull
the chains so tightly that the suspension bottomsout.
CAUTION
If your vehicle has a front underspoiler and rear underspoiler (both optional), be carefulnot to scrape them when placing the vehicleon the carrier and when removing the vehicle
from the carrier.
Towing with all wheels on the ground
1. Check the transmission and differential oil levels
and add oil to bring it to the upper level if necessary.
2. Release the parking brake and put the transmis-sion in neutral.
3. The ignition switch should be in the “ACC” posi-
tion while the vehicle is being towed.
4. Take up slack in the towline slowly to prevent
damage to the vehicle.

11
11-1
– CONTINUED –
Maintenance schedule 11-3 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance precautions 11-3 . . . . . . . . . . . . . . . . . . . . . . . .
Engine hood 11-5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine compartment overview 11-8 . . . . . . . . . . . . . . . . .
2.5 liter model 11-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.0 liter (Turbo) model 11-9 . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine oil 11-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the oil level 11-10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the oil and oil filter 11-11 . . . . . . . . . . . . . . . . . . .
Recommended grade and viscosity 11-13 . . . . . . . . . . .
Recommended grade and viscosity under
severe driving conditions 11-15 . . . . . . . . . . . . . . . . . . . . . .
Synthetic oil 11-15
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling system 11-15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling fan, hose and connections 11-16 . . . . . . . . . . . .
Engine coolant 11-16 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air cleaner element 11-20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Replacing the air cleaner element 11-20 . . . . . . . . . . . . . .
Spark plugs 11-23 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended spark plugs 11-24 . . . . . . . . . . . . . . . . . . . . .
Drive belts 11-24 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Manual transmission oil 11-25 . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the oil level 11-25 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended grade and viscosity 11-26 . . . . . . . . . . .
Automatic transmission fluid 11-27 . . . . . . . . . . . . . . . . . . .
Checking the fluid level 11-27 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended fluid 11-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Front differential gear oil (AT vehicles) 11-29
. . . . .
Checking the oil level 11-29 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended grade and viscosity 11-30 . . . . . . . . . . .
Rear differential gear oil 11-31 . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the gear oil level 11-31 . . . . . . . . . . . . . . . . . . . . . . .
Recommended grade and viscosity 11-32 . . . . . . . . . . .
Power steering fluid 11-32 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the fluid level 11-32 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended fluid 11-33 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake fluid 11-34 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the fluid level 11-34 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended brake fluid 11-34 . . . . . . . . . . . . . . . . . . . . . . .
Clutch fluid (MT vehicles) 11-35 . . . . . . . . . . . . . . . . . . . . . . . .
Checking the fluid level 11-35 . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended clutch fluid 11-36 . . . . . . . . . . . . . . . . . . . . . .
Brake booster 11-36 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Brake pedal 11-37 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the brake pedal free play 11-37 . . . . . . . . . . . .
Checking the brake pedal reserve distance 11-37 . .
Clutch pedal (MT vehicles) 11-38 . . . . . . . . . . . . . . . . . . . . . .
Checking the clutch function 11-38 . . . . . . . . . . . . . . . . . . . .
Checking the clutch pedal free play 11-38 . . . . . . . . . . .
Replacement of brake pad and lining 11-39 . . . . . . . .
Breaking-in of new brake pads and linings 11-39 . . .
Parking brake stroke 11-40 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tires and wheels 11-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Types of tires 11-41 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance and service

Maintenance and service
11-8
Engine compartment overview 2.5 liter model
1) Manual transmission oil level gauge
(MT) (page 11-25) or Differential
gear oil level gauge (AT) (page 11-29)
2) Air cleaner element (page 11-20)
3) Clutch fluid reservoir (page 11-35)
4) Automatic transmission fluid level gauge (page 11-27)
5) Brake fluid reservoir (page 11-34)
6) Windshield washer tank (page
11-50)
7) Fuse box (page 11-56)
8) Battery (page 11-54)
9) Engine oil filler cap (page 11-10)
10) Engine coolant reservoir (page 11-16)
11) Radiator cap (page 11-16)
12) Engine oil level gauge (page 11-10)
13) Power steering fluid reservoir (page 11-32)

Maintenance and service
11-9
– CONTINUED –
2.0 liter (Turbo) model
1) Manual transmission oil level
gauge (MT) (page 11-25) or
Differential gear oil level gauge
(AT) (page 11-29)
2) Air cleaner element (page 11-20)
3) Clutch fluid reservoir (page
11-35)
4) Automatic transmission fluid level gauge (page 11-27)
5) Brake fluid reservoir (page
11-34)
6) Windshield washer tank (page
11-50)
7) Fuse box (page 11-56)
8) Battery (page 11-54)
9) Engine oil filler cap (page 11-10)
10) Engine coolant reservoir (page
11-16)
11) Engine oil level gauge (page 11-10)
12) Radiator cap (page 11-16)
13) Power steering fluid reservoir (page 11-32)

Maintenance and service
11-10
Engine oil Checking the oil level
Check the engine oil level at each fuel stop.
1. Park the vehicle on a level surface and stop theengine.
2. Pull out the dipstick, wipe it clean, and insert it again.
3. Be sure the dipstick is correctly inserted until it
stops with the graphic symbol i on its top ap-
pearing as shown in the illustration.
1) Notch
2) Upper level 3) Lower level
4) Front of vehicle
4. Pull out the dipstick again and check the oil level on it. If it is below the lower level, add oil to bring thelevel up to the upper level.
CAUTION
Use only engine oil with the recommended
grade and viscosity. Be careful not to spill engine oil when ad-
ding it. If oil touches the exhaust pipe, it may
cause a bad smell, smoke, and/or a fire.

Maintenance and service
11-11
– CONTINUED –
If you check the oil level just after stopping the en-
gine, wait a few minutes for the oil to drain back into
the oil pan before checking the level.
Just after driving or while the engine is warm, the
engine oil level reading may be in a range betweenthe upper level and the notch mark. This is caused
by thermal expansion of the engine oil.
To prevent overfilling the engine oil, do not add any
additional oil above the upper level when the engineis cold. Changing the oil and oil filter
Change the oil and oil filter according to the mainte-
nance schedule in the “Warranty and Maintenance
Booklet”.
The engine oil and oil filter must be changed more
frequently than listed in the maintenance schedule
when driving on dusty roads, when short trips are
frequently made, or when driving in extremely cold
whether.
1. Warm up the engine by letting the engine idle for
about 10 minutes to ease draining the engine oil.
2. Park the vehicle on a level surface and stop theengine.
3. Remove the oil filler cap.
1) Drain plug
4. Drain out the engine oil by removing the drain
plug while the engine is still warm. The used oil
should be drained into an appropriate container and
disposed of properly.
WARNING
Be careful not to burn yourself with hot en- gine oil.
5. Wipe the seating surface of the drain plug with a
clean cloth and tighten it securely with a new seal-