2003 TOYOTA SIENNA ECU

03 SIENNA_U (L/O 0207)
242003 MY SIENNA (OM45410U)
If the power sliding door system does not
operate properly after the above proce-
dure, there may be a problem in the sys-
tem. Contact your Toyota dealer.
Locking operation
Unlocking operation
The wireless remote control system is
designed to lock or unlock all the
doors from a distance within approxi-
mately 1 m (3 ft.) of the vehicle. On
some models, the system also allows
you to activate the theft deterrent sys-
tem from the same distance.
LOCKING AND UNLOCKING THE
DOORS
To lock and unlock all the doors, push
the switches of the transmitter slowly
and securely.
To lock: Push the “LOCK” switch. All the
doors are locked simultaneously. At this
time one beep will be heard, parking
lights, side marker lights, tail lights and
other exterior lights will flash once.
Left and right side power sliding door
models—If the “LOCK” switch is kept
pressed in, the panic mode will work. (For
details, see “PANIC (LOCK)” SWITCH.)
Check to see that the doors are securely
locked.
If any of the doors is not securely closed,
or if the key is in the ignition switch,
locking cannot be performed by the
“LOCK” switch and a beep will sound con-
tinuously for 10 seconds. However, if the
key is in the ignition, a beep will not
sound.
Wireless remote control

03 SIENNA_U (L/O 0207)
262003 MY SIENNA (OM45410U)
OPENING AND CLOSING WITH THE
WIRELESS REMOTE CONTROL (on
some models)
Push the switch of the wireless remote
control transmitter slowly and securely.
The power sliding door opens and
closes completely.
Left side power sliding door—
To open: Push the “DPWR DOOR”
switch.
To close: Push the “DPWR DOOR”
switch again.
Right side power sliding door—
To open: Push the “PPWR DOOR” switch
or “PWR DOOR” switch.
To close: Push the “PPWR DOOR”
switch or “PWR DOOR” switch again.
Opening and closing can be performed by
the switches under the following conditions
only:
The sliding door is unlocked.
The power sliding door system is on.
(The “PWR DOOR OFF” switch is
pushed out.)
The ignition key is not in the “ON”
position.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.
“PANIC (LOCK)” SWITCH (left and right
side power sliding door models)
Pushing and holding the “PANIC
(LOCK)” switch blows the horn intermit-
tently and flashes the headlights, tail
lights and other exterior lights.
The “PANIC (LOCK)” switch is used to
deter vehicle theft when you witness any-
one attempting to break into or damage
your vehicle.

03 SIENNA_U (L/O 0207)
292003 MY SIENNA (OM45410U)
1. Using a coin or equivalent, open thetransmitter case.2. Remove the discharged transmitter bat-tery.
NOTICE
Do not bend the terminals.
3. Put a new transmitter battery with posi-tive (+) side up.
Close the transmitter case securely.
NOTICE
 Make sure the positive side and
negative side of the transmitter bat-
tery should be faced correctly.
 Do not replace the battery with wet
hands. Water may cause unexpected
rust.
 Do not touch or move any compo-
nents inside of the transmitter, or
it may interfere with proper opera-
tion.

03 SIENNA_U (L/O 0207)
302003 MY SIENNA (OM45410U)
Be careful not to bend the electrode
of the transmitter battery insertion
and that dust or oils do not adhere
to the transmitter case.
 Close the transmitter case securely.
After replacing battery, check that the
transmitter operates properly. If the trans-
mitter still does not operate properly, con-
tact your Toyota dealer.
The windows can be operated with the
switch on each front door.
The power windows work when the ignition
switch is in the “ON” position.
OPERATING THE DRIVER’S WINDOW
Use the switch on the driver’s door.
Normal operation: The window moves as
long as you hold the switch.
To open: Lightly push down the switch.
To close: Lightly pull up the switch.Automatic operation: Push the switch
completely down or pull it completely up,
and then release it. The window will fully
open or close. To stop the window part-
way, lightly move the switch in the oppo-
site direction and then release it.
Jam protection function: During automat-
ic closing operation, the window stops and
opens half way if something gets caught
between the window and window frame.
If the window receives a strong impact,
this function may work even if nothing is
caught.
Power windows

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342003 MY SIENNA (OM45410U)
Insert the key into the keyhole and turn
it.
To lock: Turn the key clockwise.
To unlock: Turn the key counterclockwise.
To open the back door, pull the lever.
Vehicles with power door lock system—All
the doors lock and unlock simultaneously
with back door.Strap
Handle
When closing the back door, use the
inside strap or handle for easier reach
to the back door.
To close the back door, lower it and press
down on it. After closing the back door,
try pulling it up to make sure it is secure-
ly closed.
See “Luggage stowage precautions” in
Section 2 for precautions in loading lug-
gage.
CAUTION
Keep the back door closed while driv-
ing. This not only keeps the luggage
from being thrown out but also pre-
vents exhaust gases from entering
the vehicle.
NOTICE
To prevent damage to the back door
dampers, do not apply any force,
paint or let any other foreign matter
on them.
Back door

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352003 MY SIENNA (OM45410U)
To open the hood:1. Pull the hood lock release lever. The hood will spring up slightly.
CAUTION
Before driving, be sure that the hood
is closed and securely locked. Other-
wise, the hood may open unexpected-
ly while driving and an accident may
occur.
2. In front of the vehicle, pull up theauxiliary catch l ever and lift the
hood.3. Hold the hood open by inserting the support rod into the slot.
Before closing the hood, check to see that
you have not forgotten any tools, rags,
etc. and return the support rod to its
clip—this prevents rattles. Then lower the
hood make sure it locks into place. If
necessary, press down gently on the front
edge to lock it.
CAUTION
After inserting the support rod into
the slot, make sure the rod supports
the hood securely from falling down
on to your head or body.
Hood

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)
472003 MY SIENNA (OM45410U)
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.
CAUTION
Adjustment should not be made
while the vehicle is moving.
When adjusting the seat, be careful
that the seat does not hit a passen-
ger or luggage.
Third seats only: Adjust both seat
cushions to the same position and
align both seatbacks at the same
angle when a person sits in the
third seat center position. Other-
wise, the person cannot wear the
seat belt properly and this may
cause serious injuries in a collision.
After adjusting the seat position,
try sliding it forward and backward
to make sure it is lock in position.
After adjusting the seatback, push
back your body to make sure it is
locked in position.
When returning seats to their original
position, observe the following pre-
cautions in order to prevent personal
injury in a collision or sudden stop:
Make sure the seat is securely
locked by pushing forward and rear-
ward on the top of the seatback
and by trying to pull up the edge
of the bottom cushion. Failure to
do so will prevent the seat belt
from operating properly.
Make sure the seat belts are not
twisted or caught under the seat
and are arranged in their proper
position and are ready to use.
Folding the seats up will enlarge the lug-
gage compartment. See “Luggage stowage
precautions” in Section 2 for precautions
in loading luggage.
Rear seats—
—Rear seat precautions