2003 TOYOTA COROLLA Oil

’03 Corolla U (L/O 0201)
2092003 MY COROLLA_U (OM12744U)
DOITYOURSELF MAINTENANCE
Engine and Chassis
Checking the engine oil level210
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Checking the engine coolant level 211
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Checking the radiator and condenser r212
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Checking brake fluid 213
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Checking power steering fluid 213
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Checking tire pressure 214
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Checking and replacing tires 215
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Rotating tires 216
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Installing snow tires and chains 217
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Replacing wheels 218
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Aluminum wheel precautions 219
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SECTION 7 2

’03 Corolla U (L/O 0201)
2102003 MY COROLLA_U (OM12744U)
Low level Full level
Add oil O.K. Too full
With the engine at operating tempera-
ture and turned off, check the oil level
on the dipstick. 1. To get a true reading, the vehicle should be on a level spot. After turning
off the engine, wait a few minutes for
the oil to drain back into the bottom of
the engine.
2. Pull the dipstick out, hold a rag under the end and wipe it clean.
3. Reinsert the dipstick—push it in as far as it will go, or the reading will not be
correct.
4. Pull the dipstick out and look at the oil level while holding a rag under the
end.
NOTICE
Be careful not to drop the engine oil
on the vehicle components.
If the oil level is below or only slightly
above the low level, add engine oil of
the same type as already in the engine.
Remove the oil filler cap and add engine
oil in small quantities at a time, checking
the dipstick. We recommend that you use
a funnel when adding oil.
The approximate quantity of oil needed to
fill between the low level and the full level
on the dipstick is indicated below for ref-
erence.
When the level reaches within the correct
range, install the f iller cap handtight.
Oil quantity, L (qt., lmp. qt.): 1.3 (1.4, 1.1)
NOTICE
 Be careful not to spill the engine
oil on the vehicle components.
 Avoid overfilling, or the engine
could be damaged.
 Check the oil level on the dipstick
once again after adding the oil.
ENGINE OIL SELECTION
Use API grade SL “EnergyConserving” or
ILSAC multigrade engine oil.
Recommended viscosity:
SAE 5W30
Outside temperature
SAE 5W30 is the best choice for good
fuel economy, and good starting in cold
weather.
If SAE 5W30 oil is not available, SAE
10W30 oil may be used. However, it
should be replaced with SAE 5W30 at
the next oil change.
Checking the engine oil level

’03 Corolla U (L/O 0201)
2112003 MY COROLLA_U (OM12744U)
API service symbol
ILSAC certification mark
Oil identification marks
Either or both API registered marks are
added to some oil containers to help
you select the oil you should use.
The API Service Symbol is located any-
where on the outside of the container.
The top portion of the label shows the oil
quality by API (American Petroleum Insti-
tute) designations such as SL. The center
portion of the label shows the SAE viscos-
ity grade such as SAE 5W30. “Energy
Conserving” shown in the lower portion,
indicates that the oil has fuelsaving ca-
pabilities.
The ILSAC (International Lubricant Stan-
dardization and Approval Committee) Certi-
fication Mark is displayed on the front of
the container.Look at the seethrough coolant reser-
voir when the engine is cold. The cool-
ant level is satisfactory if it is between
the “FULL” and “LOW” lines on the
reservoir. If the level is low, add ethyl-
eneglycol type coolant for a proper
corrosion protection of aluminum com-
ponents.
The coolant level in the reservoir will vary
with engine temperature. However, if the
level is on or below the “LOW” line, add
coolant. Bring the level up to the “FULL”
line.
Always use ethyleneglycol type coolant
for a proper corrosion protection of alumi-
num components. See information in the
next column.
If the coolant level drops within a short
time after replenishing, there may be a
leak in the system. Visually check the
radiator, hoses, engine coolant filler cap,
radiator cap and drain cock and water
pump.
If you can find no leak, have your Toyota
dealer test the cap pressure and check
for leaks in the cooling system.
Checking the engine coolant
level

’03 Corolla U (L/O 0201)
2222003 MY COROLLA_U (OM12744U)
CAUTION
BATTERY PRECAUTIONS
The battery produces flammable and
explosive hydrogen gas.
Do not cause a spark from the bat-
tery with tools.
Do not smoke or light a match near
the battery.
The electrolyte contains poisonous
and corrosive sulfuric acid.
Avoid contact with eyes, skin or
clothes.
Never ingest electrolyte.
Wear protective safety glasses when
working near the battery.
Keep children away from the bat-
tery.
EMERGENCY MEASURES
If electrolyte gets in your eyes,
flush your eyes with clean water
immediately and get immediate
medical attention. If possible, con-
tinue to apply water with a sponge
or cloth while en route to the medi-
cal office.
If electrolyte gets on your skin,
thoroughly wash the contact area. If
you feel pain or burning, get medi-
cal attention immediately.
If electrolyte gets on your clothes,
there is a possibility of its soaking
through to your skin, so immediate-
ly take off the exposed clothing and
follow the procedure above, if nec-
essary.
If you accidentally swallow electro-
lyte, drink a large quantity of water
or milk. Follow with milk of magne-
sia, beaten raw egg or vegetable
oil. Then go immediately for emer-
gency help.
Warning: Battery posts, terminals
and related accessories contain lead
and lead compounds, chemicals
known to the State of California to
cause cancer and reproductive
harm. Wash hands after handling.
Terminals
Holddown
clamp Ground cable
Check the battery for corroded or loose
terminal connections, cracks, or loose
holddown clamp.
a. If the battery is corroded, wash it off with a solution of warm water and bak-
ing soda. Coat the outside of the termi-
nals with grease to prevent further cor-
rosion.
b. If the terminal connections are loose, tighten their clamp nuts—but do not
overtighten.
c. Tighten the holddown clamp only enough to keep the battery firmly in
place. Overtightening may damage the
battery case.
Checking battery c ondition—
—Precautions —Checking battery exterior

’03 Corolla U (L/O 0201)
2352003 MY COROLLA_U (OM12744U)
ENGINE
Valve clearance (engine cold), mm (in.):Intake 0.15—0.25 (0.006—0.010)
Exhaust 0.25—0.35 (0.010—0.014)
Spark plug type: DENSO SK16R11
NGK IFR5A11
Spark plug gap, mm(in.): 1.1 (0.043) ENGINE LUBRICATION
Oil capacity (drain and ref
ill),
L (qt., Imp. qt.):
With filter 3.7 (3.9, 3.3)
Without filter 3.5 (3.7, 3.1)
Oil grade: API grade SL “EnergyConserving” or
ILSAC multigrade engine oil is recom-
mended.
Recommended oil viscosity: SAE 5W30
Outside temperature
COOLING SYSTEM
Total capacity, L (qt., Imp. qt.):6.5 (6.9, 5.7)
Coolant type: “TOYOTA Long Life Coolant” or equiva-
lent
With ethyleneglycol type coolant for a
proper corrosion protection of aluminum
components
Do not use alcohol type antifreeze or
plain water alone.
BATTERY
Open voltage
∗ at 20 C (68 F):
12.6—12.8 V Fully charged
12.2—12.4 V Half charged
11.8—12.0 V Discharged
∗: Voltage that is checked 20 minutes af-
ter the key is removed with all the
lights turned off.
Charging rates: 5 A max.
CLUTCH
Pedal free play, mm (in.): 5—15 (0.2—0.6)
Fluid type: SAE J1703 or FMVSS No.116 DOT 3
Service specifications

’03 Corolla U (L/O 0201)
2362003 MY COROLLA_U (OM12744U)
MANUAL TRANSAXLE
Oil capacity, L (qt., Imp. qt.):1.9 (2.0, 1.7)
Oil type: Gear oil API GL4 or GL5
Recommended oil viscosity: SAE 75W90
AUTOMATIC TRANSAXLE
Fluid capacity (drain and ref ill),
L (qt., Imp. qt.):
Up to 3.1 (3.3, 2.7)
Fluid type: Automatic transmission fluid Type TIV
Change automatic transmission fluid only
as necessary.
Generally, it is necessary to change
automatic transmission fluid only if your
vehicle is driven under one of the Special
Operating Conditions listed in your
“Scheduled Maintenance Guide” or
“Owner ’s Manual Supplement”. When
changing the automatic transmission fluid,
use only Toyota Genuine ATF Type TIV
(ATF JWS3309 or NWS6500) to aid in
assuring optimum transaxle performance. Notice: Using automatic transmission
fluid other than Toyota Genuine ATF
Type TIV may cause deterioration in
shift quality, locking up of your trans-
mission accompanied by vibration, and
ultimately damage the automatic trans-
mission of your vehicle.
BRAKES
Minimum pedal clearance when depressed
with the force of 490 N (50 kgf, 110 lbf)
with the engine running, mm (in.):
70 (2.8)
Pedal free play, mm (in.): 1—6 (0.04—0.24)
Pad wear limit, mm (in.): 1.0 (0.04)
Lining wear limit, mm (in.): 1.0 (0.04)
Parking brake adjustment when pulled with
the force of 196 N (20 kgf, 44 lbf): 6—9 clicks
Fluid type: SAE J1703 or FMVSS No.116 DOT 3 STEERING
Wheel free play:
Less than 30 mm (1.2 in.)
Power steering fluid type: Automatic transmission fluid DEXRON II
or III

’03 Corolla U (L/O 0201)
2003 MY COROLLA_U (OM12744U)
Publication No. OM12744U
Part No. 01999-12744
Printed in Japan 01020100
(U)
Quick index
If a service reminder indicator or warning buzzer comes on 85 . . . . . . . . .
 If your vehicle will not start 170 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. .
 If your engine stalls while driving 173 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 If your vehicle overheats 173 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . .
 If you have a flat tire 174 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
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 If your vehicle needs to be towed 182 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 Tips for driving during breakin period 144 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 How to start the engine 158 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
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 General maintenance 197 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
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Gas station information
Fuel type:
UNLEADED gasoline, Octane Rating 87 (Research Octane Number 91)
or higher
See page 144 for detailed information.
Fuel tank capacity:
50 L (13.2 gal., 11.0 lmp. gal.)
Engine oil:
API grade SL “EnergyConserving” or ILSAC multigrade engine oil is
recommended.
See page 210 for detailed information.
Automatic transmission fluid: Automatic transmission fluid Type TIV
See page 236 for detailed information.
Tire information: See pages 214 through 219.
Tire pressure: See page 237.
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’03 Corolla U (L/O 0201)
2003 MY COROLLA_U (OM12744U)
Where to obtain the Repair Manual
The repair manual for COROLLA, written in
English, may be purchased as applicable from
any Toyota dealer.
Pub. Name: 2003 COROLLA Repair Manual
Pub. No.: RM938U1 (Maintenance, Preparation, Service specifications and Diagnostics)
RM938U2 (Engine, Chassis and
Body)
Maintenance procedures for the engine,
chassis, body, electrical system, and more,
are clearly explained and illustrated.
Periodic maintenance and tuneup
Periodic maintenance and tuneup helps to pre-
vent small problems from growing into larger ones lat-
er on. The repair manual outlines exactly what main-
tenance is required and clearly explains how to do the
work yourself stepbystep.
Areas covered include such things as spark plug re-
placement, valve clearance adjustment and engine oil
and filter replacement.