2003 TOYOTA SIENNA engine

03 SIENNA_U (L/O 0207)
i2003 MY SIENNA (OM45410U)
Foreword
Welcome to the growing group of valueconscious people who drive Toyotas. We are proud of the advanced engineering and
quality construction of each vehicle we build.
This Owner ’s Manual explains the operation of your new Toyota. Please read it thoroughly and have all the occupants
follow the instructions carefully. Doing so will help you enjoy many years of safe and troublefree motoring. For
important information about this manual and your Toyota, read the following pages carefully.
When it comes to service, remember that your Toyota dealer knows your vehicle best and is interested in your complete
satisfaction. He will provide quality maintenance and any other assistance you may require.
If there is not a Toyota dealer near you, or you need emergency assistance for any reason, please call the following number:
U.S. OWNERS:Toyota Customer Assistance Center Tollfree: 18003314331
CANADIAN OWNERS:Toyota Canada Customer Interaction Centre Tollfree: 1888TOYOTA8 (18888696828)
Please leave this Owner ’s Manual in this vehicle at the time of resale. The next owner will need this information also.
All information and specifications in this manual are current at the time of printing. However, because of Toyota’s policy of
continual product improvement, we reserve the right to make changes at any time without notice.
Please note that this manual applies to all models and explains all equipment, including options. Therefore, you may
find some explanations for equipment not installed on your vehicle.
©2002 TOYOTA MOTOR CORPORATION
All rights reserved. This material may not be reproduced or copied, in whole or in part, without the written permission of Toyo ta
Motor Corporation.

03 SIENNA_U (L/O 0207)
42003 MY SIENNA (OM45410U)
19. Tire pressure warning system resetswitch or traction control system off
switch
20. Theft deterrent system/Engine immobiliser system indicator light
21. Power rear view mirror control switches
22. Instrument panel light control dial

03 SIENNA_U (L/O 0207)
52003 MY SIENNA (OM45410U)
1. Engine coolant temperature gauge
2. Tachometer
3. Service reminder indicators andindicator lights 4. Speedometer
5. Fuel gauge
6. Trip meter reset knob
7. Odometer and two trip meters
Instrument cluster overview

With tachometer

03 SIENNA_U (L/O 0207)
62003 MY SIENNA (OM45410U)
1. Engine coolant temperature gauge
2. Service reminder indicators andindicator lights
3. Speedometer 4. Odometer and two trip meters
5. Fuel gauge
6. Trip meter reset knob

Without tachometer

03 SIENNA_U (L/O 0207)
72003 MY SIENNA (OM45410U)
Brake system warning light∗1or
Driver ’s seat belt reminder light∗1
or Malfunction indicator lamp∗1
Low fuel level warning light∗1
Discharge warning light∗1
Low engine oil pressure warning light∗1
or Antilock brake system warning light∗1
Open door warning light∗1
SRS warning light∗1
Open power sliding door warning light∗1
Low windshield washer fluid level warning light∗1
Low tire pressure warning light∗1
Front passenger ’s seat belt reminder light∗1
Vehicle skid control system/traction control
system warning light∗1
Turn signal indicator lights
Indicator symbols on the instrument panel

03 SIENNA_U (L/O 0207)
92003 MY SIENNA (OM45410U)
OPERATION OF INSTRUMENTS AND
CONTROLS
Keys and Doors
Keys10
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Engine immobiliser system 13
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Front doors 14
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Sliding door 16
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Power sliding door 19
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Wireless remote control 24
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Power windows 30
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Power rear quarter windows 32
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Center side windows and manual rear quarter windows 33
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Back door 34
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Hood 35
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Theft deterrent system 36
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Fuel tank cap 38
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Electric moon roof 40
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SECTION 1 2

03 SIENNA_U (L/O 0207)
102003 MY SIENNA (OM45410U)
Your vehicle is supplied with two kinds
of keys.1. Master key—This key works in every lock.
2. Sub key—This key will not work in the glove box.
To protect things locked in the glove box
when you have your vehicle parked, leave
the sub key with the attendant.
Since the front doors and sliding doors
can be locked without a key, you should
always carry a spare master key in case
you accidentally lock your keys inside the
vehicle.KEY NUMBER PLATE
Your key number is shown on the plate.
Keep the plate in a safe place such as
your wallet, not in the vehicle.
If you should lose your keys or if you
need additional keys, duplicates can be
made by a Toyota dealer using the key
number.
We recommend you to write down the key
number and keep it in safe place.Your vehicle is supplied with two kinds
of keys. 1. Master key (black)—This key works in every lock. Your Toyota dealer will
need it to make you a new key with
builtin transponder chip.
2. Sub key (gray)—This key will not work in the glove box.
A transponder chip for engine immobiliser
system has been filled in the head of the
master and sub keys. These chips are
needed to enable the system to function
correctly, so be careful not to lose these
keys. If you make your own duplicate key,
you will not be able to cancel the system
or start the engine.
Keys (without engine
immobiliser system) Keys (with engine immobiliser
system)

03 SIENNA_U (L/O 0207)
112003 MY SIENNA (OM45410U)
To protect things locked in the glove box
when you have your vehicle parked, leave
the sub key with the attendant.
Since the front doors and sliding doors
can be locked without a key, you should
always carry a spare master key in case
you accidentally lock your keys inside the
vehicle.
NOTICE
When using a key containing a trans-
ponder chip, observe the following
precautions:
When starting the engine, do not
use the key with a key ring resting
on the key grip and do not press
the key ring against the key grip.
Otherwise the engine may not start,
or may stop soon after it starts.
When starting the engine, do not
use the key with other transponder
keys around (including keys of oth-
er vehicles) and do not press other
key plates against the key grip.
Otherwise the engine may not start,
or may stop soon after it starts. If
this happens, remove the key once
and then insert it again after taking
off other transponder keys (includ-
ing keys of other vehicles) from the
ring or while gripping or covering
them with your hand to start the
engine.