maintenance TOYOTA PRIUS 2004 2.G User Guide

271
Tire surface and wheel nuts
Check the tires carefully for cuts,
damage or excessive wear. See Sec-
tion 8
−2 for additional information.
When checking the tires, make sure
no nuts are missing, and check the
nuts for looseness. Tighten them if
necessary.
Tire rotation
Rotate the tires according to the
maintenance schedule. (For sched-
uled maintenance information, please
refer to the “Scheduled Maintenance
Guide” or “Owner ’s Manual Supple-
ment”.) See page 293 for additional
information.
Be on the alert for changes in perfor-
mance, sounds, and visual tip −offs that
indicate service is needed. Some impor-
tant clues are as follows:
Engine missing, stumbling, or pinging
Appreciable loss of power
Strange engine noises
A fluid leak under the vehicle (however,
water dripping from the air conditioning
after use is normal.)
Change in exhaust sound (This may
indicate a dangerous carbon monoxide
leak. Drive with the windows open and
have the exhaust system checked im-
mediately.)
Flat −looking tire; excessive tire squeal
when cornering; uneven tire wear
Vehicle pulls to one side when driving
straight on a level road
Strange noises related to suspension
movement
Loss of brake effectiveness; spongy
feeling brake pedal; pedal almost
touches floor; vehicle pulls to one side
when braking
Coolant temperature continually higher
than normal If you notice any of these clues, take your
vehicle to your Toyota dealer as soon as
possible. It probably needs adjustment or
repair.
CAUTION
Do not continue driving with the ve-
hicle unchecked. It could result in se-
rious vehicle damage and possibly
personal injury.
Does your vehicle need
repairing?

272
Some states have vehicle emission in-
spection programs which include OBD
(On−Board Diagnostics) che cks.
The OBD system monitors the operation
of the emission control system. When the
OBD system determines that a problem
exists somewhere in the emission control
system, the malfunction indicator lamp
comes on. In this case, your vehicle may
not pass the I/M test and need to be
repaired. Contact your Toyota dealer to
service the vehicle.
Even if the malfunction indicator lamp
does not come on, your vehicle may not
pass the I/M test as readiness codes
have not been set in the OBD system.
Readiness codes are automatically set
during ordinary driving. However, when the
battery is disconnected or run down, the
codes are erased. Also, depending on
your driving habits, the codes may not be
completely set.
Also, if the malfunction indicator lamp had
come on recently due to temporary mal-
function such as a loose fuel tank cap,
your vehicle may not pass the I/M test. The malfunction indicator lamp will go off
after taking several driving trips, but the
error code in the OBD system will not be
cleared unless about 40 trips or more are
taken.
If your vehicle does not pass the I/M test
and the malfunction indicator lamp does
not come on, contact your Toyota dealer
to prepare the vehicle for re
−testing.
Emissions inspection and
maintenance (I/M) programs

273
DOITYOURSELF MAINTENANCE
Introduction
Engine compartment overview274
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Fuse locations 275
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Do −it− yourself service precautions 276
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Positioning the jack 278
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Parts and tools 279
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SECTION 8– 1

276
If you perform maintenance by yourself,
be sure to follow the correct procedure
given in this Section.
You should be aware that improper or in-
complete servicing may result in operating
problems.
Performing do−it−yourself maintenance
during the warranty period may affect your
warranty coverage. Read the separate
Toyota Warranty statement for details and
suggestions.
This Section gives instructions only for
those items that are relatively easy for an
owner to perform. As explained in Section
7, there are still a number of items that
must be done by a qualified technician
with special tools.
For information on tools and parts for do −
it −yourself maintenance, see “Parts and
tools” on page 279.
Utmost care should be taken when work-
ing on your vehicle to prevent accidental
injury. Here are a few precautions that
you should be especially careful to ob-
serve:CAUTION
When the hybrid system is on, keep
hands, clothing, and tools away
from the moving fan and engine
drive belts. (Removing rings,
watches, and ties is advisable.)
Right after driving, the engine
compartment—the engine, radiator,
exhaust manifold and spark plug
boots, etc.—will be hot. So be care-
ful not to touch them. Oil, fluids
and spark plugs may also be hot.
If the hybrid system is hot, do not
remove the radiator cap or loosen
the drain plugs to prevent burning
yourself.
Do not leave anything that may
burn easily, such as paper or rags,
in the engine compartment.
Do not smoke, cause sparks or al-
low open flames around fuel or the
batteries. Their fumes are flam-
mable.
When the hybrid system is operat-
ing with the “READY” light on, the
engine is automatically started in
some case. When you inspect the
engine compartment, be sure to
press the “POWER” switch to the
“OFF” mode.
Do not get under your vehicle with
just the body jack supporting it. Al-
ways use automotive jack stands or
other solid supports.
Be sure that the hybrid system is
in the “OFF” mode if you work near
the electric cooling fans or radiator
grille. With the ignition on, the
electric cooling fans will automati-
cally start to run if the engine cool-
ant temperature is high and/or the
air conditioning is on.
Use eye protection whenever you
work on or under your vehicle
where you may be exposed to fly-
ing or falling material, fluid spray,
etc.
Be extremely cautious when work-
ing on the batteries. It contains poi-
sonous and corrosive sulfuric acid
or strong alkali.
Doityourself service
precautions

281
DOITYOURSELF MAINTENANCE
Engine and Chassis
Checking the engine oil level282
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Checking the coolant level 284
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking the radiator and condenser 286
. . . . . . . . . . . . . . . . . . . . . . . . .
Checking brake fluid 286
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. . . .
Checking and replacing the air conditioning filter 287
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Checking tire inflation pressure 289
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Checking and replacing tires 291
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Rotating tires 293
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Installing snow tires and chains 294
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Replacing wheels 295
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Aluminum wheel precautions 296
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SECTION 8– 2

287
82p109
The air conditioning filter information
label is placed on the left side of the
glove box as shown and indicates that
a filter has been installed.
The air conditioning filter prevents dust
from entering the vehicle through the air
conditioning vent.
82p006b
The air conditioning filter may clog af-
ter long use. The filter may need to be
replaced if the air flow of the air condi-
tioning and heater experiences extreme
reductions in operating efficiency, or if
the windows begin to fog up easily.
The air conditioning filter is set behind the
glove box.
To maintain the air conditioning efficiency,
inspect and replace the air conditioning
filter according to the maintenance sched-
ule. In dusty areas or areas with heavy
traffic flow, such as inner city or desert
areas, early replacement may be required.
(For scheduled maintenance information,
please refer to the “Owner ’s Manual Sup-
plement/Scheduled Maintenance”.)
82p007a
1. Open the glove box, and slide offthe damper as shown.
Checking and replacing the
air conditioning filter

293
CAUTION
Observe the following instruc-
tions. Otherwise, an accident
may occur resulting in death or
serious injuries.
Do not mix radial, bias belted,
or biasply tires on your ve-
hicle, as this may cause dan-
gerous handling characteris-
tics resulting in loss of control.
 Do not use tires other than the
manufacturer’s recommended
size, as this may cause danger-
ous handling characteristics
resulting in loss of control.
Toyota recommends all four tires,
or at least both front or rear tires
be replaced at a time as a set.
See “If you have a flat tire” on page
243 for tire change procedure. When a tire is replaced, the wheel
should always be balanced.
An unbalanced wheel may affect ve-
hicle handling and tire life. Wheels
can get out of balance with regular
use and should therefore be balanced
occasionally.
When replacing a tubeless tire, the
air valve should also be repl
aced
w i t h a new on e.
82p104a
To equalize tire wear and help ex-
tend tire life, Toyota recommends
that you rotate your tires accord-
ing to the maintenance schedule.
(For scheduled maintenance infor-
mation, please refer to the “Sched-
uled Maintenance Guide” or “Own-
er’s Manual Supplement”.)
However, the most appropriate tim-
ing for tire rotation may vary ac-
cording to your driving habits and
road surface conditions.
The wheel assemblies must be ro-
tated as illustrated above.
Rotating tires

297
DOITYOURSELF MAINTENANCE
Electrical components
Checking auxiliary battery condition 298
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Auxiliary battery recharging precautionss 300
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Checking and replacing fuses 300
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Adding washer fluid 302
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Replacing light bulbs 302
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SECTION 8– 3

299
83p001c
Terminals
Ground
cableHold−down clamp
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 hold− down clamp only
enough to keep the battery firmly in
place. Overtightening may damage the
battery case.
NOTICE
 Be sure the hybrid system and all
accessories are off before perform-
ing maintenance.
 When checking the battery, remove
the ground cable from the negative
terminal (“–” mark) first and rein-
stall it last.
 Be careful not to cause a short cir-
cuit with tools.
 Take care no solution gets into the
battery when washing it.
If the auxiliary battery is disc onnected
or run down, the power window and back
door may not operate automatically and
the jam protection function will not func-
tion correctly and does not open the back
door after you reconnect, replace or re-
charge the battery. In any of these cases,
you should normalize each system. To
normalize them, see “Power windows” on
page 40 and “Back door” on page 39.
Before you disconnect the auxiliary bat-
tery, confirm the shift position is “P” and
apply the parking brake completely. After you reconnect the auxiliary battery,
shift the shift lever to “N” and confirm the
shift position is “N” when the “IG
−ON”
mode is enabled.
After connecting the cables, the hybrid
system may not start by pushing the
“POWER” switch. In that case, push it
once again.

323
In order to be effective, the SRS
airbags must deploy with tremen-
dous speed. The rapid deployment
of the SRS airbags makes the
SRS airbags themselves potential
sources of serious injury if an oc-
cupant is too close to an airbag,
or if an object or some part of his
or her body has been placed be-
tween the occupant and the airbag
at the time of deployment. This is
just one example of how the in-
structions in Section 2−2 of this
Owner ’s Manual will help ensure
proper use of the occupant re-
straint systems, and increase the
safety they can provide to you
and your family in the event of an
accident.
Toyota recommends you to read
the provisions in Section 2− 2 care-
fully and refer to them as needed
during your time of ownership of
this vehicle.New vehicle warranty
Your new vehicle is covered by
the following Toyota limited war-
ranties:
 New vehicle warranty
 Emission control systems war-
ranty
 Others
For further information, please re-
fer to the “Owner ’s Warranty Infor-
mation Booklet” or “Owner ’s Manu-
al Supplement”.
Your responsibility for maintenance
It is the owner’s responsibility to
make sure the specified mainte-
nance is performed. Section 7
gives details of these maintenance
requirements. Also included in
Section 7 is general maintenance.
For scheduled maintenance infor-
mation, please refer to the
“Scheduled Maintenance Guide” or
“Owner ’s Manual Supplement”.