2004 TOYOTA PRIUS engine

282
82p001a
Low level Full level
Add oil O.K. Too full
With the hybrid system at operating
temperature and turned off, check the
oil level on the dipstick. 1. To get a correct reading, the vehicle should be on a level ground. After turn-
ing off the hybrid system, wait a few
minutes for the oil to drain back into
the bottom of the engine.
2. Pull the dipstick out, hold the rag un- der 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.
CAUTION
Be careful not to touch the hot ex-
haust manifold.
NOTICE
Be careful not to drop 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
raise the level between low and full on the
dipstick is indicated below for reference.
When the level reaches within the correct
range, install the filler cap hand− tight.
Oil quantity, L (qt., Imp. qt.): 1.5 (1.6, 1.3)
NOTICE
Be careful not to spill engine oil on
the vehicle components.
 Avoid overfilling, or the hybrid sys-
tem could be damaged.
 Check the oil level on the dipstick
once again after adding the oil.
Checking the engine oil level

283
ENGINE OIL SELECTION
“Toyota Genuine Motor Oil” is used in
your Toyota vehicle. Use Toyota approved
“Toyota Genuine Motor Oil” or equivalent
to satisfy the following grade and viscos-
ity.
Oil grade:API grade SL “Energy −Conserving” or
ILSAC multigrade engine oil.
Recommended viscosity:
SAE 5W −30
oil008
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.
82P103
API service symbol
ILSAC certification mark

284
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 5W−30. “Energy −
Conserving” shown in the lower portion,
indicates that the oil has fuel −saving ca-
pabilities.
The ILSAC (International Lubricant Stan-
dardization and Approval Committee) Certi-
fication Mark is displayed on the front of
the container.
To ensure excellent lubrication perfor-
mance for your engine, “Toyota Genuine
Motor Oil” is available, which has been
specifically tested and approved for all
Toyota engines.
Please contact your Toyota dealer for fur-
ther details about “Toyota Genuine Motor
Oil”.
CAUTION
The coolant heat storage tank reaches
high temperature inside. It is danger-
ous if hot coolant is discharged when
replacing. For replacement of the
coolant, contact your Toyota dealer.
Look at the seethrough coolant reser-
voir when the hybrid system is cold.
The coolant level is satisfactory if it is
between the “FULL” and “LOW” lines
on the reservoir. If the level is low, add
the coolant. (For the coolant type, see
“Coolant type selection” described be-
low.)
The coolant level in the reservoir will vary
with hybrid system temperature. However,
if the level is on or below the “LOW” line,
add coolant. Bring the level up to the
“FULL” line.
If the coolant level drops within a short
time after replenishing, there may be a
leak in the system. Visually check the
radiator, hoses, radiator cap and drain
cock and water pump.
Checking the coolant level

286
If any of the above parts are extremely
dirty or you are not sure of their condi-
tion, take your vehicle to a Toyota dealer.
CAUTION
To prevent burning yourself, be care-
ful not to touch the radiator or con-
denser when the engine is hot.
NOTICE
To prevent damage to the radiator
and condenser, do not perform the
work by yourself.
Checking brake fluid
82p002b
To check the fluid level, simply look at
the seethrough reservoir. The level
should be between the “MAX” and
“MIN” lines on the reservoir.
It is normal for the brake fluid level to go
down slightly as the brake pads wear or
when the fluid level in the accumulator is
high.
If the reservoir needs frequent refueling,
it may indicate a serious mechanical prob-
lem.
If the level is low, add SAE J1703 or
FMVSS No. 116 DOT 3 brake fluid to
the brake reservoir.Refilling brake fluid:
1. Turn the hybrid system off.
2. Depress the brake pedal more than 40 times.
3. Remove the reservoir cap by hand. Add brake fluid up to the “MAX” line.
If you do not follow the procedure above,
the reservoir may overflow.
Use only newly opened brake fluid. Once
opened, brake fluid absorbs moisture from
the air, and excess moisture can cause a
dangerous loss of braking.CAUTION
Take care when filling the r eservoir
because brake fluid can harm your
eyes and damage painted surfaces. If
fluid gets in your eyes, flush your
eyes with clean water immediately. If
you still feel uncomfortable with your
eyes, go to the doctor.
NOTICE
If you spill the fluid, be sure to wipe
it off to prevent it from damaging the
parts or painting.
Checking the radiator and
condenser

302
If any washer does not work, the wash-
er tank may be empty. Add washer
fluid.
You may use plain water as washer fluid.
However, in cold areas where tempera-
tures range below the freezing point, use
washer fluid containing antifreeze. This
product is available at your Toyota dealer
and most auto parts stores. Follow the
manufacturer ’s directions for how much to
mix with water.
NOTICE
Do not use engine antifreeze or any
other substitute because it may dam-
age your vehicle’s paint.
The following illustrations show how to
gain access to the bulbs. When replacing
a bulb, make sure the hybrid system and
light switch are off. Use bulbs with the
wattage ratings given in the table.
CAUTION
To prevent burning yourself, do not
replace the light bulbs while they
are hot.
Halogen bulbs have pressurized gas
inside and require special handling.
They can burst or shatter if
scratched or dropped. Hold a bulb
only by its plastic or metal case.
Do not touch the glass part of a
bulb with bare hands.
Vehicles with discharge headlights—
Do not touch the high voltage sock-
et when the headlight turns on.
20000 V is momentarily generated
and may cause severe injury by
electric shock.
Do not disassemble, repair or take
apart the headlight bulbs, connec-
tor, power supply circuits and ro-
tate components. Or you may be
injured by electric shocks. Call your
dealer when the headlights fail to
work or have to be replaced or dis-
posed of.
NOTICE
Only use a bulb of the listed type.
Adding washer fluid Replacing light bulbs—

309
SPECIFICATIONS
SPECIFICATIONS
Dimensions and weight310
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Electric motor 310
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Enginee 310
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Fuel 311
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Hybrid vehicle battery 311
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Service specifications 311
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Tires 313
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Fuses 314
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SECTION 9

310
Overall length mm (in.) 4445 (175.0)
Overall width mm (in.) 1725 (67.9)
Overall height mm (in.) 1490 (58.7)*
Wheelbase mm (in.) 2700 (106.3)
Front tread mm (in.) 1505 (59.3)
Rear tread mm (in.) 1480 (58.3)
Vehicle capacity weight
(occupants + luggage)kg (lb.) 385 (845)
*: Unladen vehicle
Electric motor
Type: Permanent magnet synchronous motor (water cooling)
Maximum output: 50/1200 − 1540 kW/rpm
Maximum torque: 400/0 − 1200 N·m/rpm Model: 1NZ
−FXE
Type: 4 −cylinder in line, 4 cycle, gasoline
Bore and stroke, mm (in.): 75.0 x 84.7 (2.95 x 3.33)
Displacement, cm
3 (cu. in.):
1497 (91.4)
Dimensions and weight Engine

311
Fuel type:Unleaded gasoline, Octane Rating 87
(Research Octane Number 91) or
higher
Fuel tank capacity, L (gal., lmp. gal.): 45 (11.9, 9.9)
Hybrid vehicle battery
Type: Nickel −Metal hydride battery
Voltage: 7.2 V
Capacity: 6.5 Ah (3HR)
Quantity: 28
Overall voltage: 201.6 V
Service specifications
ENGINE
Valve clearance (engine cold), mm (in.): Intake 0.17—0.23 (0.007—0.009)
Exhaust 0.27—0.33 (0.011—0.013)
Spark plug type: DENSO SK16R11
NGK IFR5A11
Spark plug gap, mm (in.): 1.1 (0.043)
Fuel