TOYOTA SIENNA 2004 XL20 / 2.G Owners Manual

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DOITYOURSELF MAINTENANCE
Electrical components
Checking battery condition476
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Battery recharging precautions 477
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking and replacing fuses 478
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adding washer fluid 479
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. . . . .
Replacing light bulbs 480
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. . . .
SECTION 7 3

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CAUTION
BATTERY PRECAUTIONS
The battery produces flammable and
explosive hydrogen gas.
Do not cause a spark from the bat-
tery with tools.
Do not smoke or light a match near
the battery.
The electrolyte contains poisonous
and corrosive sulfuric acid.
Avoid contact with eyes, skin or
clothes.
Never ingest electrolyte.
Wear protective safety glasses when
working near the battery.
Keep children away from the bat-
tery.
EMERGENCY MEASURES
If electrolyte gets in your eyes,
flush your eyes with clean water
immediately and get immediate
medical attention. If possible, con-
tinue to apply water with a sponge
or cloth while en route to the medi-
cal office.
If electrolyte gets on your skin,
thoroughly wash the contact area. If
you feel pain or burning, get medi-
cal attention immediately.
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.
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.
Terminals Ground cable
Hold −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.
Checking battery c ondition—
—Precautions —Checking battery exterior

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NOTICE
Be sure the engine and all accesso-
ries are off before performing main-
tenance.
 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 battery is disconnected or run
down, the power window, power sliding
door, power back door and moon roof may
not operate automatically and the jam
protection function will not function cor-
rectly, and does not open the back door
after you reconnect, replace or recharge
the battery. In any of these cases, you
should normalize each system. To normal-
ize them, see “Power windows” on page
42, “Power sliding doors” on page 27,
“Power back door” on page 36 and “Elec-
tric moon roof” on page 53 in Section
1 −2.
Ty p e A
Green Dark Clear or
light yellow
Ty p e B Blue White Red
CHECKING BY INDICATOR
Check the battery condition by the indi-
cator color.
Indicator color
ConditionTy p e ATy p e B
GreenBlueGood
DarkWhite
Charging necessary.
Have battery
checked by your
Toyota dealer.
Clear orlight
yellow
Red
Have battery
checked by your
Toyota dealer.
During recharging, the battery is pro-
ducing 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 re- charger is off when connecting the
charger cables to the battery and when
disconnecting them.
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.
Only do a slow charge (5 A or
less). Charging at a quicker rate is
dangerous. The battery may ex-
plode, causing personal injuries.
NOTICE
Never recharge the battery while the
engine is running. Also, be sure all
accessories are turned off.
—Checking battery c ondition Battery recharging pr ecautions

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GoodBlown
Ty p e A
Good Blown
Ty p e B
Good Blown
Ty p e C
Good Blown
Ty p e D
If the headlights or other electrical
components do not work, check the
fuses. If any of the fuses are blown,
they must be replaced.
See “Fuse locations” on page 449 in Sec-
tion 7 −1 for locations of the fuses.
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 492 in Section 8 of this manual for
the functions controlled by each circuit.
Type C and D—When any of the fuses
are blown, contact your Toyota dealer.
Checking and replacing fuses

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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 rat-
ing designated on the fuse box lid.
If you do not have a spare fuse, in an
emergency you can pull out the “HTR” (10
A), “AC INV” or “RAD NO.1” fuse, which
may be dispensable for normal driving,
and use it if its amperage rating is the
same.
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.
It is a good idea to purchase a set of
spare fuses and keep them in your ve-
hicle for emergencies. 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.
CAUTION
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.
If any washer does not work or the low
windshield washer fluid level warning
light comes on, the washer 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.
Adding washer fluid

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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.
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.
When replacing the rear light bulbs,
turn off the power back door sys-
tem to prevent an unexpected seri-
ous injury.
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-
tated 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.
The inside of the lens of exterior lights
such as headlights may temporarily fog up
when the lens 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 lens, just 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.
Replacing light bulbs—

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A: D2R discharge bulbs
B: HB4 halogen bulbs
C: HB3 halogen bulbs
D: H3 halogen bulbs
E: Wedge base bulbs (clear)
F: Wedge base bulbs (amber)
G: Single end bulbs
H: Double end bulbsTy p e
W
Bulb No.
35
51
Light bulbs
Headlights (low beam) With discharge headlights
Without discharge headlights
Headlights (high beam) —
9006 A
B
Front fog lights
Parking and front side marker lights Front turn signal lights
Rear turn signal lights
Stop/tail and rear side marker lights
Back −up lights
License plate lights
Luggage compartment light 60
9005 C
55
—D
5
—E 21
3157A F
21
—G
21/5
—G
18
921 E
5
—E
5
—H
Tail lights 5
—E
Front personal lights 4.9
—G
Rear personal lights 4.9
—G
Vanity lights 3
—H
Door courtesy lights 3.8
—G

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1. Open the hood. Turn the bulb basecounterclockwise to the front of the
vehicle as shown.2. Unplug the connector while depress-ing the lock release.
If the connector is tight, wiggle it.3. Plug in a new bulb into the connec- tor and install it into the mounting
hole.
Aiming is not necessary after replacing
the bulb. When aiming adjustment is nec-
essary, contact your Toyota dealer.
—Headlights

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If either the left or right front fog light
bulbs 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.
—Front fog lights—Front turn signal lights—Parking and front side
marker lights

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Remove the bolts.
Pull and hold the tab and remove the
bulb unit.
a: Rear turn signal light
b: Stop/tail and rear side marker lightRemove the strap with a Phillipshead
screwdriver.
—Rear turn signal, stop/tail
and rear side marker lights—Tail and backup lights