Get DO-IT-YOURSELF MAINTENANCE Electrical components Guide for Toyota Prius 4 Door Second Generation (2004-2009)

SECTION 8– 3

DO−IT−YOURSELF MAINTENANCE

Electrical components

Checking 12 volt battery condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . 414

12 volt battery recharging precautionss . . . . . . . . . . . . . . . . . . . . . . . 416

Checking and replacing fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 416

Adding washer fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418

Replacing light bulbs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 418

413

Checking 12 volt battery

condition—

—Precautions

—Checking 12 volt battery

exterior

EMERGENCY MEASURES

CAUTION

ꢀ If electrolyte gets in your eyes,

flush your eyes with clean water

and get immediate medical atten-

tion. If possible, continue to apply

water with a sponge or cloth while

en route to the medical office.

12 VOLT BATTERY PRECAUTIONS

When the 12 volt battery must be re-

placed, use the Prius designated bat-

tery.

83p035

The 12 volt battery produces flam-

mable and explosive hydrogen gas.

ꢀ If electrolyte gets on your skin,

thoroughly wash the contact area. If

you feel pain or burn, get medical

attention immediately.

ꢀ Do not cause a spark from the bat-

tery with tools.

ꢀ Do not smoke or light a match near

the battery.

ꢀ 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.

Open the back door. Remove the lug-

gage storage box and 12 volt battery

cover.

The electrolyte contains poisonous

and corrosive sulfuric acid.

ꢀ Avoid contact with eyes, skin or

clothes.

If the back door does not open, see “If

you cannot operate back door opener” on

page 376.

ꢀ Never ingest electrolyte.

ꢀ 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.

ꢀ Wear protective safety glasses when

working near the battery.

ꢀ Keep children away from the bat-

tery.

414

After you reconnect the 12 volt battery,

shift the shift lever to “N” and confirm the

shift position is “N” when the “IG−ON”

mode is enabled.

Hold−down clamp

Ground cable

NOTICE

z Be sure the hybrid system and all

accessories are off before perform-

ing maintenance.

After connecting the cables, the hybrid

system may not start by pushing the

“POWER” switch. In that case, push it

once again.

z When checking the battery, remove

the ground cable from the negative

terminal (“–” mark) first and rein-

stall it last.

83p001c

z Be careful not to cause a short cir-

cuit with tools.

Terminals

z Take care no solution gets into the

battery when washing it.

Check the battery for corroded or loose

terminal connections, cracks, or loose

hold−down clamp.

If the 12 volt battery is disconnected 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 43 and “Back door” on page 42.

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.

Before you disconnect the 12 volt battery,

confirm the shift position is “P” and apply

the parking brake completely.

c. Tighten the hold−down clamp only

enough to keep the battery firmly in

place. Overtightening may damage the

battery case.

415

12 volt battery recharging

precautions

Checking and replacing fuses

During recharging, the battery is pro-

ducing hydrogen gas.

NOTICE

Type A

Never recharge the battery with the

hybrid system on. Also, be sure all

accessories are turned off.

Therefore, before recharging:

1. If recharging with the battery installed

on the vehicle, be sure to disconnect

the ground cable.

2. Make sure the power switch on the

recharger is off when connecting the

charger cables to the battery and when

disconnecting them.

Good

Type B

Blown

CAUTION

ꢀ Always charge the battery in an un-

confined area. Do not charge the

battery in a garage or closed room

where there is not sufficient ventila-

tion.

83p003

Good

Blown

Type C

ꢀ Only do

a

slow charge (3.5A or

less). Charging at a quicker rate is

dangerous. The battery may ex-

plode, causing personal injuries.

Good

Blown

416

Type A fuses can be pulled out by the

pull−out tool. The location of the pull−out

tool is shown in the illustration.

If the new fuse immediately blows out,

there is a problem with the electrical sys-

tem. Have your Toyota dealer correct it as

soon as possible.

If you are not sure whether the fuse has

blown, try replacing the suspected fuse

with one that you know is good.

CAUTION

83p004b

If the fuse has blown, push a new fuse

into the clip.

Never use a fuse with a higher am-

perage rating, or any other object, in

place of a fuse. This may cause ex-

tensive damage and possibly a fire.

Only install a fuse with the amperage rat-

ing designated on the fuse box lid.

If you do not have a spare fuse, in an

emergency you can pull out the “DOME”

or “OBDII” fuse, which may be dispens-

able for normal driving, and use it if its

amperage rating is the same.

If the headlights or other electrical

components do not work, check the

fuses. If any of the fuses are blown,

they must be replaced.

If you cannot use one of the same amper-

age, use one that is lower, but as close

to the rating as possible. If the amperage

is lower than that specified, the fuse

might blow out again. but this does not

indicate anything wrong. Be sure to get

the correct fuse as soon as possible and

return the substitute to its original clip.

See “Fuse locations” on page 393 for

locations of the fuses.

Turn the hybrid system and inoperative

component off. Pull the suspected fuse

straight out and check it.

Determine which fuse may be causing the

problem. The lid of the fuse box shows

the name of the circuit for each fuse. See

page 430 for the functions controlled by

each circuit.

It is a good idea to purchase a set of

spare fuses and keep them in your ve-

hicle for emergencies.

417

Adding washer fluid

Replacing light bulbs—

If any washer does not work, the wash-

er tank may be empty. Add washer

fluid.

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.

Vehicles with discharge headlights—

ꢀ Do not touch the high−intensity dis-

charge headlight’s high voltage

socket when the headlights are

turned on. An extremely high volt-

age of 20,000V will be discharged

and could result in serious injury

or death by electric shock.

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.

The stop lights and high mounted stoplight

consist of a number of LEDs. If any of

LEDs burn out, take your vehicle to your

Toyota dealer to have the light replaced.

ꢀ Do not attempt to take apart or re-

pair the headlight bulbs, connec-

tors, power supply circuits, or re-

lated components. Doing so could

result in electric shock and serious

injury or death. Call your Toyota

dealer for headlight repair or servic-

ing, including replacement of bulbs

and bulb disposal.

If two or more LEDs in a stop light burn

out, your vehicle may not conform to local

laws (SAE).

NOTICE

CAUTION

Do not use engine antifreeze or any

other substitute because it may dam-

age your vehicle’s paint.

ꢀ 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.

NOTICE

Only use a bulb of the listed type.

418

The inside of the lens of exterior lights

such as headlights may temporarily fog up

when the lense becomes wet in the rain

or in a car wash. This is not a problem

because the fogging is caused by the

temperature difference between the outside

and inside of the lense, just like the

windshield fogs up in the rain. However, if

A: D4R Discharge bulbs

B: HB2 Halogen bulbs

C: HB4 Halogen bulbs

D: Wedge base bulbs

E: Double end bulbs

Bulb

No.

Light bulbs

Headlights

W

Type

Discharge headlights

Halogen headlights

Front fog lights

—

35

60/55

51

A

B

C

D

9006

—

F: LEDs (Light−emitting Diodes)

Parking lights

5

there is

a

large drop of water on the

Front turn signal

lights

inside of the lense, or if there is water

pooled inside the light, contact your

Toyota dealer.

—

21

D

Rear turn signal lights

Tail lights

—

21

5

D

F

Stop lights

4.4

High mounted stop-

light

—

2.8

F

Back−up lights

License plate lights

Interior lights

7440

—

21

5

D

E

D

E

—

8

Personal lights

Door courtesy lights

Vanity lights

—

5

—

5

—

5

Luggage compart-

ment light

—

5

E

419

—Headlights

83p030a

83p031

83p010a

Removing clip

1. Open the hood. Remove the clips

and take out the cover.

2. RIGHT−HAND HEADLIGHT ONLY: Re-

move the clip and take out the air

cleaner inlet.

Remove and install the clips as shown in

the following illustrations.

Remove and install the clip as shown in

the following illustrations.

83p032

Installing clip

420

83p011

83p013a

83p014a

Removing clip

3. Unplug the connector. Turn the bulb

4. Release the bulb retaining spring

and remove the bulb along with the

socket. Install a new bulb into the

socket and return the bulb retaining

spring to its original position.

cover counter−clockwise and remove

it.

If the connector is tight, wiggle it.

To install a bulb, align the tabs of the

bulb with the cutout of the mounting hole.

83p012

Installing clip

421

—Front fog lights

—Parking lights

If either the left or right front fog lights

burns out, contact your Toyota dealer.

NOTICE

Do not try to replace the front fog

light bulbs by yourself. You may dam-

age the vehicle.

83p015b

83p016a

5. Install the bulb cover and turn it

clockwise. Plug in the connector.

83p017a

422

—Rear turn signal, tail and

back−up lights

—Front turn signal lights

83p018a

83p023a

83p024b

83p025c

a: Rear turn signal light

b: Back−up light

c: Tail light

83p019b

423

—License plate lights

83p026b

83p028b

Remove the cover.

83p027a

424

DO-IT-YOURSELF MAINTENANCE Electrical components for Your Toyota Prius 4 Door Second Generation (2004-2009)

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