Get DIY - Electrical Guide for Toyota Aurion 4 Door First Generation (2006-2012)

7--3

DO-IT-YOURSELF

MAINTENANCE

ELECTRICAL COMPONENTS

Checking battery condition . . . . . . . . 270

Precautions . . . . . . . . . . . . . . . . . . . 270

Checking battery exterior . . . . . . . 270

Checking battery fluid . . . . . . . . . . 271

Battery recharging precautions . . . . 272

Checking and replacing fuses . . . . . 272

Adding washer fluid . . . . . . . . . . . . . . 274

Replacing light bulbs . . . . . . . . . . . . . 274

Headlights (low beam—halogen

bulbs) . . . . . . . . . . . . . . . . . . . . . . . . 275

Headlights (high beam) . . . . . . . . . 276

Front turn signal lights . . . . . . . . . . 277

Rear turn signal lights . . . . . . . . . . 278

Other exterior lights . . . . . . . . . . . . 278

DO-IT-YOURSELF MAINTENANCE -- ELECTRICAL COMPONENTS

Checking battery condition—

—Precautions

—Checking battery exterior

Terminals

CAUTION

BATTERY PRECAUTIONS

The battery produces flammable and ex-

plosive hydrogen gas.

D Do not cause a spark from the battery

with tools.

D Do not smoke or light a match near the

battery.

Hold--down

clamp

Ground cable

The electrolyte contains poisonous and

corrosive sulphuric acid.

D Avoid contact with eyes, skin or

clothes.

Check the battery for corroded or loose

terminal connections, cracks, or loose

hold-down clamp.

D Never ingest electrolyte.

D Wear protective safety glasses when

working near the battery.

a. If the battery is corroded, wash it off

with

a

solution of warm water and

baking soda. Coat the outside of the

terminals with grease to prevent

further corrosion.

D Keep children away from the battery.

EMERGENCY MEASURES

D If electrolyte gets in your eyes, flush

your eyes with clean water immediate-

ly and get immediate medical atten-

tion. If possible, continue to apply

water with a sponge or cloth while en

route to the medical office.

b. If the terminal connections are loose,

tighten their clamp nuts—but do not

overtighten.

c. Tighten the hold-down clamp only en-

ough to keep the battery firmly in

place. Overtightening may damage the

battery case.

D If electrolyte gets on your skin, thor-

oughly wash the contact area. If you

feel pain or burning, get medical

attention immediately.

NOTICE

D Be sure the engine and all accessories

are off before performing mainte-

nance.

D If electrolyte gets on your clothes,

there is a possibility of its soaking

through to your skin, so immediately

take off the exposed clothing and fol-

low the procedure above, if neces-

sary.

D When checking the battery, remove

the ground cable from the negative

terminal (“- ” mark) first and reinstall

it last.

D If you accidentally swallow electro-

lyte, drink a large quantity of water or

milk. Follow with milk of magnesia,

beaten raw egg or vegetable oil. Then

go immediately for emergency help.

D Be careful not to cause a short circuit

with tools.

D Take care no solution gets into the

battery when washing it.

270

DO-IT-YOURSELF MAINTENANCE -- ELECTRICAL COMPONENTS

—Checking battery fluid

NOTICE

Do not overfill the cells. Excess electro-

lyte could squirt out of the battery dur-

ing heavy charging, causing corrosion

or damage.

Upper line

Lower line

CHECKING BY FLUID LEVEL LINES

The fluid (electrolyte) level must be be-

tween the upper and lower lines.

When checking the fluid level, look at all six

cells, not just one or two.

If the level is lower than the lower line, add

distilled water.

Low

Normal

ADDING DISTILLED WATER

1. Remove the vent plugs.

2. Add distilled water to cells needing fluid.

If the side of your battery is covered,

check the water level by looking down di-

rectly above the cell as illustrated above.

3. Retighten the vent plugs securely.

271

DO-IT-YOURSELF MAINTENANCE -- ELECTRICAL COMPONENTS

Battery recharging precautions

Checking and replacing fuses

During recharging, the battery is produc-

ing hydrogen gas.

Therefore, before recharging:

1. If recharging with the battery installed on

the vehicle, be sure to disconnect the

ground cable.

2. Be sure the power switch on the recharger

is off when connecting the charger cables

to the battery and when disconnecting

them.

Good

Blown

CAUTION

Type A

Type B

Type C

D Always charge the battery in an un-

confined area.

D Do not charge the battery in a garage

or closed room where there is not suf-

ficient ventilation.

D Be sure to remove the vent plugs be-

fore recharging.

Good

Blown

NOTICE

Never recharge the battery while the en-

gine is running. Also, be sure all acces-

sories are turned off.

Good

Blown

272

DO-IT-YOURSELF MAINTENANCE -- ELECTRICAL COMPONENTS

If you cannot use one of the same amperage,

use one that is lower, but as close to the rat-

ing 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 pos-

sible and return the substitute to its original

clip.

It is a good idea to purchase a set of spare

fuses and keep them in your vehicle for emer-

gencies.

If the new fuse immediately blows out, there

is a problem with the electrical system. Have

your Toyota dealer correct it as soon as pos-

If the headlights or other electrical compo-

sible.

nents do not work, check the fuses. If any

of the fuses are blown, they must be re-

placed.

CAUTION

See “Fuse locations” on page 252 in Section

7--1 for locations of the fuses.

Never use a fuse with a higher amperage

rating, or any other object, in place of

a fuse. This may cause extensive dam-

age and possibly a fire.

Turn the ignition switch 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

284 in Section 8 for the functions controlled

by each circuit.

Type B fuses—When any of the fuses are

blown, contact your Toyota dealer.

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 you are not sure whether the fuse has

blown, try replacing the suspected fuse with

one that you know is good.

If the fuse has blown, push a new fuse into

the clip.

Only install a fuse with the amperage rating

designated on the fuse box lid.

If you do not have a spare fuse, in an

emergency you can pull out the “RADIO

NO.1” or “PWR OUTLET” fuse, which may

be dispensable for normal driving, and use

it if its amperage rating is the same.

273

DO-IT-YOURSELF MAINTENANCE -- ELECTRICAL COMPONENTS

Adding washer fluid

Replacing light bulbs—

If any washer does not work, the washer

fluid tank may be empty. Add washer fluid.

Before replacing the headlight bulbs and

front turn signal light bulbs, remove the

engine compartment cover. See “Remov-

ing the engine compartment cover” on

page 251 in Section 7- 1.

For the location of the washer fluid tank see

“Engine compartment overview” on page 250

in Section 7--1.

The following illustrations show how to gain

access to the bulbs. When replacing a bulb,

make sure the ignition switch and light switch

are off. Use bulbs with the wattage ratings

given in the table.

You may use plain water as washer fluid.

However, in cold areas where temperatures

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 high mounted stoplight consists of a

number of light emitting diodes (LEDs). If any

of the LEDs burn out, take your vehicle to

your Toyota dealer to have the light replaced.

NOTICE

Do not use engine antifreeze or any

other substitute because it may damage

your vehicle’s paint.

CAUTION

D To prevent burning yourself, do not

replace the light bulbs while they are

hot.

D Halogen bulbs have pressurised 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—

D Do not touch the high-intensity dis-

charge headlight’s high voltage

socket when the headlights are turned

on. An extremely high voltage of

20000 V will be discharged and could

result in serious injury or death by

electric shock.

D Do not attempt to take apart or repair

the low beam headlight bulbs, con-

nectors, power supply circuits, or re-

lated components. Doing so could re-

sult in electric shock and serious in-

jury or death. Call your Toyota dealer

for headlight repair or servicing, in-

cluding replacement of bulbs and

bulb disposal.

274

DO-IT-YOURSELF MAINTENANCE -- ELECTRICAL COMPONENTS

—Headlights (low

beam—halogen bulbs)

NOTICE

Only use a bulb of the listed type.

The inside of exterior light lenses (e.g. head-

lights) may temporarily fog up when the lens

becomes wet. This is not a problem as the fog-

ging is caused by a temperature difference be-

tween the outside and inside of the lens, like

the windshield fogs up in the rain. However, if

there is a large drop of water on the inside of

the lens, or if there is water pooled inside the

light, contact your Toyota dealer.

1. Turn the bulb base counterclockwise to

the front of the vehicle as shown.

Light bulbs

Headlights (low)

W

Type

Discharge bulbs

Halogen bulbs

35

55

A

B

Headlights (high)

Front fog lights

60

55

5

C

B

D

E

D

F

Parking lights

Front turn signal lights

Side turn signal lights

Rear turn signal lights

Back-up lights

21

5

21

16

5

Licence plate lights

Front personal lights

Rear personal lights

Interior light

2. Unplug the connector while depressing

the lock release.

5

8

If the connector is tight, wiggle it.

8

Vanity lights

8

D

Glove box light

1.2

3.8

5

Boot light

Door courtesy lights

A: D4S discharge bulbs

B: H11 halogen bulbs

C: HB3 halogen bulbs

D: Wedge base bulbs (clear)

E: Wedge base bulbs (amber)

F: Double end bulbs

275

DO-IT-YOURSELF MAINTENANCE -- ELECTRICAL COMPONENTS

—Headlights (high beam)

3. Install a new bulb and plug the connec-

tor into the mounting hole. Install the

back cover and turn it clockwise.

1. Turn the back cover counterclockwise

and remove it. Turn the bulb base coun-

terclockwise to the front of the vehicle

as shown.

Aiming is not necessary after replacing the

bulb. When aiming adjustment is necessary,

contact your Toyota dealer.

2. Unplug the connector while depressing

the lock release.

If the connector is tight, wiggle it.

276

DO-IT-YOURSELF MAINTENANCE -- ELECTRICAL COMPONENTS

—Front turn signal lights

3. Install a new bulb and plug the connec-

tor into the mounting hole. Install the

back cover and turn it clockwise.

Aiming is not necessary after replacing the

bulb. When aiming adjustment is necessary,

contact your Toyota dealer.

277

DO-IT-YOURSELF MAINTENANCE -- ELECTRICAL COMPONENTS

—Rear turn signal lights

—Other exterior lights

If any of the following lights burn out, con-

tact your Toyota dealer:

D front foglight,

D parking light,

D headlight (with discharge bulb),

D side turn signal light,

D back-up light,

D licence plate light,

D LED type high mounted stoplight, or

D LED type tail or stop/tail light.

NOTICE

Do not try to replace the front fog, park-

ing, headlight (with discharge bulb),

side turn signal, back-up or licence

plate light bulbs by yourself. You may

damage the vehicle.

278

DIY - Electrical for Your Toyota Aurion 4 Door First Generation (2006-2012)

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