TOYOTA SIENNA 2003 XL20 / 2.G Service Manual

03 SIENNA_U (L/O 0207)
372003 MY SIENNA (OM45410U)
WHEN THE SYSTEM IS SET
Activating the system
The system will give the alarm under the
following conditions:
If any of the front, sliding or back
doors is unlocked or if the hood is
forcibly opened without the key or wire-
less remote control transmitter
If the battery terminal is disconnected
and then reconnected
The indicator light will come on when the
system is activating.
If any of the doors is unlocked without the
key or wireless remote control transmitter
and the key is not in the ignition switch,
all the doors will be automatically locked
again.
After 1 minute, the alarm will automatically
stop and the indicator light will start flash-
ing again.
Reactivating the alarm
Once set, the system cannot be cancelled
without the key or wireless remote control
transmitter. If the front, sliding and back
doors and hood are closed after the alarm
stops, the system automatically resets the
alarm. The alarm will activate again under the
same circumstances described in
“Activating the system”.
Stopping the alarm
To stop alarm midway, do the following:
Unlock either front door or back door
with the key or wireless remote control
transmitter.
Turn the key from the “LOCK” to “ON”
position.
These ways cancel the system at the
same time.
TESTING THE SYSTEM 1. Open all the windows.
2. Set the system as described above. The doors should be locked with the
key or wireless remote control transmit-
ter. Be sure to wait until the indicator
light goes off or starts flashing.
3. Unlock any door from the inside. The system s hould activate the alarm.
4. Cancel the system as described above.
5. Repeat this operation for the other doors and hood. When testing on the
hood, also check that the system is
activated when the battery terminal is
disconnected and then reconnected. If the system does not work properly,
have it checked by your Toyota dealer.

03 SIENNA_U (L/O 0207)
382003 MY SIENNA (OM45410U)
With tachometer
Without tachometer
This indicates that the fuel filler door
is on the left side of your vehicle.
1. To open the fuel filler door, pull thelever up.
When refueling, turn off the engine.
CAUTION
Do not smoke, cause sparks or al-
low open flames when refueling.
The fumes are flammable.
When opening the cap, do not re-
move the cap quickly. In hot weath-
er, fuel under pressure could cause
injury by spraying out of the filler
neck if the cap is suddenly re-
moved.
Fuel tank cap

03 SIENNA_U (L/O 0207)
392003 MY SIENNA (OM45410U)
NOTICE
Avoid opening the fuel filler door
when the left side sliding door is fully
opened. Otherwise, the fuel filler door
may be damaged.
2. To remove the fuel tank cap, turnthe cap slowly counterclockwise,
then pause slightly before removing
it. After removing the cap, hang it
on the cap hanger.
It is not unusual to hear a slight swoosh
when the cap is opened. When insta lling,
turn the cap clockwise till you hear a
click.
If the cap is not tightened securely, the
malfunction indicator lamp comes on.
Make sure the cap is tightened securely. The indicator lamp goes off after driving
several times. If the indicator lamp does
not go off, contact your Toyota dealer as
soon as possible.
The left side sliding door does not open
fully if the fuel filler door is o
pened.
Left and right side power sliding door
models—The left side power sliding door
does not operate when the fuel f iller door
is opened.
CAUTION
Make sure the cap is tightened se-
curely to prevent fuel sp illage in
case of an accident.
Use only a genuine Toyota fuel tank
cap for replacement. It is designed
to regulate fuel tank pressure.

03 SIENNA_U (L/O 0207)
402003 MY SIENNA (OM45410U)
Sliding operation
Tilting operation
To operate the moon roof, use the
switches beside the personal light.
The moon roof works when the ignition
switch is in the “ON” position.
Key off operation: If both front doors are
closed, they work for 43 seconds even
after the ignition switch is turned off. It
stops working when any of the doors is
opened.
Sun shade operation—
The sun shade can be opened or closed
by hand.
Sliding operation—
To open: Push the switch on the “SLIDE
OPEN” side.
The roof will fully open. To stop the roof
partway, push the switch on either the
“SLIDE OPEN” or “TILT UP” side briefly.
The sun shade will be opened together
with the roof.
To close: Push the switch on the “TILT
UP” side.
As a precaution when closing, the roof
stops at the half closed position before
fully closing. Therefore, release the switch
and then push it again to close it com-
pletely. Tilting operation—
To tilt up: Push the switch on the “TILT
UP” side.
To lower: Push the switch on the “SLIDE
OPEN” side.
You may stop the moon roof at any de-
sired position. The roof will move while
the switch is being pushed and stop when
released except to slide open.
CAUTION
To avoid serious personal injury, you
must do the following.
While the vehicle is moving, always
keep the heads, hands and other
parts of the bodies of all occupants
away from the roof opening. Other-
wise, they could be seriously in-
jured if the vehicle stops suddenly
or if the vehicle is involved in an
accident.
Electric moon roof

03 SIENNA_U (L/O 0207)
412003 MY SIENNA (OM45410U)
Before you close the moon roof,
always make sure there is nobody
around the moon roof. You must
also make sure nobody places his
or her head, hands and other parts
of the body in the roof opening. If
someone’s neck, head or hands get
caught in the closing roof, it could
result in a serious injury. When
anyone closes the moon roof, first
make sure it is safe to do so.
Never leave small children alone in
the vehicle, especially with the igni-
tion key still inserted. They could
use the moon roof switches and get
trapped in the roof opening. Unat-
tended children can be involved in
serious accidents.
Never sit on top of the vehicle
around the roof opening.

03 SIENNA_U (L/O 0207)
422003 MY SIENNA (OM45410U)

03 SIENNA_U (L/O 0207)
432003 MY SIENNA (OM45410U)
OPERATION OF INSTRUMENTS AND
CONTROLS
Seats, Seat belts, Steering wheel and Mirrors
Seats44
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . . . .
Front seats 44
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . .
Rear seats 47
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . .
Head restraints 63
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . .
Armrests 64
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . . .
Seat heaters 64
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . .
Seat belts 65
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . .
SRS driver airbag and front passenger airbag 76
. . . . . . . . . . . . . . . . . . .
SRS side airbags 83
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . .
Child restraint 89
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . .
Tilt steering wheel 11 6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . .
Outside rear view mirrors 11 7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
Antiglare inside rear view mirror 11 9
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auto antiglare inside rear view mirror 11 9
. . . . . . . . . . . . . . . . . . . . . . . .
Sun visors 120
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . .
SECTION 1 3

03 SIENNA_U (L/O 0207)
442003 MY SIENNA (OM45410U)
While the vehicle is being driven, all ve-
hicle occupants should have the seatback
upright, sit well back in the seat and prop-
erly wear the seat belts provided.
CAUTION
Do not drive the vehicle unless the
occupants are properly seated. Do
not allow sitting on top of a
foldeddown seatback, or in the
luggage compartment or cargo area.
Persons not properly seated and/or
properly restrained by seat belts
can be severely injured in the event
of emergency braking or a collision.
During driving, do not allow pas-
sengers to stand up or move
around between seats. Severe inju-
ries can occur in the event of emer-
gency braking or a collision.
CAUTION
The SRS side airbags are installed in
the driver and front passenger seats.
Observe the following precautions.
Do not lean against the front door
when the vehicle is in use, since
the side airbag inflates with consid-
erable speed and force. Otherwise,
you may be killed or seriously in-
jured.
Do not use accessories for the
seats which cover the parts where
the side airbags inflate. Such acces-
sories may prevent the side airbags
from activating correctly, causing
death or serious injury.
Do not modify or replace the seats
or upholstery of the front seats
with the side airbags. Such changes
may disable the system or cause
the side airbags to inflate acciden-
tally, resulting in death or serious
injury. Consult your Toyota dealer if
you insist on modifications of this
kind.
Adjust the driver’s seat so that the foot
pedals, steering wheel and instrument
panel controls are within easy reach of
the driver.
CAUTION
Adjustments should not be made
while the vehicle is moving, as the
seat may unexpectedly move and
cause the driver to lose control of
the vehicle.
When adjusting the seat, be careful
that the seat does not hit a passen-
ger or luggage.
After adjusting the seat position,
try sliding it forward and backward
to make sure it is locked in posi-
tion.
After adjusting the seatback, push
back your body to make sure it is
locked in position.
SeatsFront seats—
—Front seat precautions (on vehicles with SRS side airbags)—Seat adjustment precautions

03 SIENNA_U (L/O 0207)
452003 MY SIENNA (OM45410U)
While adjusting the seat, do not put
your hands under the seat or near
the moving parts. You may catch
and injure your hands or fingers.1. SEAT POSITION ADJUSTING LEVER
Hold the center of the lever and pull it
up. Then slide the seat to the desired
position with slight body pressure and
release the lever.
2. SEATBACK ANGLE ADJUSTING LEVER
Lean forward and pull the lever up.
Then lean back to the desired angle
and release the lever.
CAUTION
To reduce the risk of sliding under
the lap belt during a collision, avoid
reclining the seatback any more than
needed. The seat belts provide maxi-
mum protection in a frontal or rear
collision when the driver and the pas-
senger are sitting up straight and
well back in the seats. If you are
reclined, the lap belt may slide past
your hips and apply restraint forces
directly to the abdomen. In the event
of a frontal collision, the more the
seat is reclined, the greater the risk
of personal injury.
—Adjusting front seats
(manual seat)

03 SIENNA_U (L/O 0207)
462003 MY SIENNA (OM45410U)
3. SEAT CUSHION HEIGHT ADJUSTINGKNOB
Turn the knob either way.1. SEAT POSITION AND SEAT CUSHION HEIGHT ADJUSTING SWITCH
Move the control switch in the desired
direction.
Releasing the switch will stop the seat at
that position.
Do not place anything under the front
seats, as this might interfere with the seat
movement. 2. SEATBACK ANGLE ADJUSTING SWITCH
Move the control switch in the desired
direction.
Releasing the switch will stop the seat-
back at that position.
—Adjusting front seats (power
seat)