engine TOYOTA PRIUS 2009 2.G Owner's Guide

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4-3. Do-it-yourself maintenance
4
Maintenance and care
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Radiator and condenser
Check the radiator and condenser and clear any foreign objects.
If either of the above parts are extremely dirty or you are not sure of
their condition, have your vehicl e checked by your Toyota dealer.
Brake fluid
■ Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.
Make sure to check the fluid type and prepare the necessary items.
■ Adding fluid
CAUTION
■When the engine is hot
Do not touch the radiator or condenser, as they may be hot and you may be
burned.
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
ItemsClean funnel

372 4-3. Do-it-yourself maintenance
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■Before recharging
When recharging, the 12 volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, before recharging:
● If recharging with the 12 volt battery installed on the vehicle, be sure to
disconnect the ground cable.
● Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the 12 volt battery.
■ After recharging/reconnecting the 12 volt battery
In some cases, the hybrid system may not start. Follow one or both of the
following procedures:
● After opening and closing the driver’s door, wait 10 seconds then attempt
to start the engine. (If the system does not start first time, repeat the pro-
cedure.)
● With the shift lever in “P” and the “POWER” switch in the OFF mode,
open and close any door, then attempt to start the hybrid system.
If the system will not start even after multiple attempts at both methods, con-
tact your Toyota dealer.

374 4-3. Do-it-yourself maintenance
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Washer fluidIf any washer does not work, the
washer tank may be empty. Add
washer fluid.
NOTICE
■When recharging th e 12 volt battery
Never recharge the 12 volt battery while the hybrid system is operating.
Also, be sure all accessories are turned off.
CAUTION
■ When refilling the washer fluid
Do not refill the washer fluid when the hybrid system is hot or operating, as
the washer fluid contains alcohol and may catch fire if spilled on the hybrid
system etc.
NOTICE
■Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle’s painted surfaces.
■ Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the washer fluid tank.

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4-3. Do-it-yourself maintenance
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Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
Turn the “POWER” switch to OFF mode.
Remove the engine compartment cover if necessary.
P. 361
Open the fuse box cover.
Engine compartment
Push the tabs in and lift the lid
off.
Driver’s side instrument panel Remove the lid.STEP1
STEP2
STEP3

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4-3. Do-it-yourself maintenance
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Maintenance and care
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■
Engine compartment
FuseAmpereCircuit
23SPARE30 ASpare
24 SPARE 15 A Spare
25 DRL 7.5 A Daytime running light system
26 H-LP LO RH 10 A
*1
Right-hand headlight (low beam)
15 A*2
27 H-LP LO LH 10 A*1
Left-hand headlight (low beam)
15 A*2
28 H-LP HI RH 10 A Right-hand headlight (high beam)
29 H-LP HI LH 10 A Left-hand headlight (high beam)
30 EFI 15 A Multiport fuel injection system/
sequential multiport fuel injection
system
31 AM2 15 A “IGN” fuse, ignition system
32 HORN 10 A Horn
33 HEV 20 A Hybrid system
34 P CON MAIN 7.5 A Parking control system, hybrid
vehicle immobilizer system

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4-3. Do-it-yourself maintenance
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Maintenance and care
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Light bulbs
You may replace the following bulbs yourself. For more information
about replacing other light bulbs, contact your Toyota dealer.
■Prepare a replacement light bulb.
Check the wattage of the light bulb being replaced. ( P. 469)
■ Remove the engine compartment cover if necessary.
 P. 3 6 1
■ Front bulb locations
■ Rear bulb locations
ITY43P038
Parking and front
side marker lights
Headlight
Front turn signal light
ITY43P039
Rear turn signal light
Back-up light Licence plate lights
Tail and rear side
marker lights

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5-1. Essential information
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If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
needs adjustment or repair. Contact your Toyota dealer as soon as
possible.
■ Visible symptoms
●Fluid leaks under the vehicle
(Water dripping from the air cond itioning after use is normal.)
● Flat-looking tires or uneven tire wear
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related to the suspension system
● Pinging or other noises related to the hybrid system
■ Operational symptoms
●Engine missing, stumbling or running rough
● Appreciable loss of power
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, s pongy feeling, pedal almost
touches the floor

5
When trouble arises
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5-1. Essential information
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Event data recorder
In a crash or a near car crash eventThe SRS airbag sensor assembly contains the EDR. In a crash or a
near car crash event, this device may record some or all of the follow-
ing information:
● Gasoline engine speed
● Whether the brake pedal was applied or not
● Vehicle speed
● To what extent the accelerator pedal was depressed
● Position of the transmission shift lever
● Whether the driver and front passenger wore seat belts or not
● Driver’s seat position
● SRS airbag deployment data
● SRS airbag system diagnostic data
● Front passenger’s occupant classification
The information above is intended to be used for the purpose of
improving vehicle safety performance. Unlike general data recorders,
the EDR does not record sound data such as conversation between
passengers.
Your vehicle has computers that monitor and control certain aspects
of your vehicle. These computers assi st in driving and maintaining
optimal vehicle performance.
Besides storing data useful for tr oubleshooting, there is a system to
record data in a crash or a near car crash event. This is called an
Event Data Recorder (EDR).

424 5-2. Steps to take in an emergency
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Stop the vehicle immediately.The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
*1: This warning light is di splayed on the touch screen.
Have the vehicle inspected by your Toyota dealer immediately.
Failing to investigate the cause of the following warnings may lead to
the system operating abnormally and possibly cause an accident.
Have the vehicle inspected by your Toyota dealer immediately.
Warning lightWarning light/Details

*1Charging system warning light Indicates a malfunction in the vehicle’s charging system.

*1Low engine oil pressure warning light Indicates that the engine oil pressure is too low.

*1Hybrid system warning light Indicates a malfunction in the hybrid system.
Warning lightWarning light/Details
Malfunction indicator lamp Malfunction in:
• The electronic hybrid system control system;
• The electronic throttle control system; or
• The transmission control system.
SRS warning light Malfunction in:
• The SRS airbag system;
• Front passenger occupant classification system; or
• The seat belt pretensioner system.

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When trouble arises
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5-2. Steps to take in an emergency
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*1: This warning light is di
splayed on the touch screen.
*2: Open door warning buzzer:

(U.S.A.)
Engine oil replacement
reminder light
Illuminates for about 3 sec-
onds and then flasher for
about 15 seconds:
Engine oil is scheduled to
be changed. Check and the engine oil,
and change if necessary.
Comes on and remains:
Engine oil should be
changed. Check and change the
engine oil.

*1
Hybrid battery warning
light
The hybrid battery voltage
drops when the transmis-
sion is left in “N” position. Push the “P” position
switch.
The hybrid battery is dis-
charged. If this light comes on with
the “READY” light on in this
case, have the system
checked by your Toyota
dealer.

*1
High coolant temperature
warning light Indicates high engine cool-
ant temperature P. 454
Master warning light A buzzer sounds and the
warning light comes on
and flashes to indicate that
the master warning system
has detected a malfunc-
tion. Take appropriate action in
accordance with the mes-
sage displayed on the touch
screen.
Warning lightWarning light/DetailsCorrection procedure