2004 Lexus ES330 ECU

IMPORTANT INFORMATION ABOUT YOUR LEXUS
ii
IMPORTANT INFORMATION
ABOUT YOUR LEXUS
Occupant restraint systems
Lexus encourages you and your family to take the time to read
Section 1-6 of this Owner's Manual carefully. In terms of
helping you understand how you can receive the maximum
benefit of the occupant restraint systems this vehicle provides,
Section 1-6 of this Owner's Manual is the most important
Section for you and your family to read.
Section 1-6 describes the function and operation concerning
seats, seat belts, SRS airbags and child restraint systems of
this vehicle and some potential hazards you should be aware
of. These systems work together along with the overall
structure of this vehicle in order to provide occupant restraint
in the event of a crash. The effect of each system is enhanced
when it is used properly and together with other systems. No
single occupant restraint system can, by itself, provide you or
your family with the equal level of restraint which these
systems can provide when used together. That is why it is
important for you and your family to understand the purpose
and proper use of each of these systems and how they relate
to each other.The purpose of all occupant restraint systems is to help reduce
the possibility of death or serious injury in the event of a
collision. None of these systems, either individually or
together, can ensure that there is no injury in the event of
collision. However, the more you know about these systems
and how to use them properly, the greater your chances
become of surviving an accident without death or serious
injury.
Seat belts provide the primary restraint to all occupants of the
vehicle, and every occupant of the vehicle should wear seat
belts properly at all times. Children should always be secured
in child restraint systems that are appropriate for their age and
size. SRS (Supplemental Restraint System) airbags are, as
their names imply, designed to work with, and be supplemental
to, seat belts and are not substitutes for them. SRS airbags
can be very effective in reducing the risk of head and chest
injuries by preventing contact of the head and chest with
interior portions of the vehicle.
In order to be effective, the SRS airbags must deploy with
tremendous speed. The rapid deployment of the SRS airbags
makes the SRS airbags themselves potential sources of
serious injury if an occupant is too close to an airbag, or if an
object or some part of his or her body has been placed between
the occupant and the airbag at the time of deployment. This
is just one example of how the instructions in Section 1-6 of
this Owner's Manual will help ensure proper use of the
occupant restraint systems, and increase the safety they can
provide to you and your family in the event of an accident.

For detailed information, refer to the description given in each Section.
PICTORIAL INDEX
ix
Page
1Door lock switch and power window
switches 28, 51. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2Driving position memory switches 178. . . . . . . . . . .
3Power rear view mirror control switches 183. . . . . .
4Side vents 205. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5Instrument panel light control dial 68. . . . . . . . . . . . . .
6Headlight, turn signal and
fog light switches 34, 37, 40, 41. . . . . . . . . . . . . . . . . . .
7Multi-information display control switches 66. . . . .
8Ignition switch 268. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9Wiper and washer switches 41. . . . . . . . . . . . . . . . . . . .
10Seat heater switches 56. . . . . . . . . . . . . . . . . . . . . . . . . .
11Emergency flasher switch 54. . . . . . . . . . . . . . . . . . . . .
12Clock 74. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13Car audio 211, 235. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14Front passenger's seat belt reminder light 57. . . . . .
15AIRBAG OFFº indicator light 152. . . . . . . . . . . . . . . .
16AIRBAG ONº indicator light 152. . . . . . . . . . . . . . . . . Page
17Security indicator light 16, 30. . . . . . . . . . . . . . . . . . . .
18Glove box 77. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
19Automatic air conditioning controls 192. . . . . . . . . .
20Rear window and outside rear view mirror
defogger switch 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
21Ashtray 75. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
22Automatic transmission selector lever 272. . . . . . . .
23Rear electric sunshade switch 88. . . . . . . . . . . . . . . . .
24Electronic modulated suspension
control switch 282. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
25Traction control system off switch 284. . . . . . . . . . .
26Cruise control switch 279. . . . . . . . . . . . . . . . . . . . . . .
27Power adjustable pedals switch 181. . . . . . . . . . . . . .
28Parking brake pedal 269. . . . . . . . . . . . . . . . . . . . . . . . .
29Auxiliary box 85. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30Hood lock release lever 92. . . . . . . . . . . . . . . . . . . . . . .
31Trunk lid opener 93. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32Fuel filler door opener 96. . . . . . . . . . . . . . . . . . . . . . . . .

KEYS AND DOORS
11
Flat key
As a transponder chip is built in its key case, you can start
the engine with this key.
The flat key works in every lock.
A transponder chip for engine immobilizer system has been
placed in the key case of the flat key. This chip is needed to
enable the system to function correctly, so be careful not to lose
this key. If you make your own duplicate key, you will not be
able to cancel the system or start the engine.
Insert your key plate in its key case as shown. We recommend
that you always carry this with you for emergency use. Do not
leave it in your vehicle.
Starting the engine using a flat key
1. Remove the key plate from the key case.
2. Insert the key plate into the ignition switch. The indicator
light keeps flashing.
3. Bring the key case closer to the ignition switch within 10
seconds as indicated by the arrow head. The indicator light
goes out. This means the engine immobilizer system is
automatically canceled. (For details, see Engine immobilizer
systemº on page 16.) You can put the key case away then. You
cannot cancel the engine immobilizer system if 10 seconds
have past after you inserted the key plate. You need to remove
the key plate from the ignition switch and try it again from the
step 2.
4. Start the engine within 20 seconds after the security
indicator light goes out. You cannot start the engine if 20
seconds have past after the security indicator went off. You
need to remove the key plate from the ignition switch and try
it again from the step 2.

KEYS AND DOORS
16
ENGINE IMMOBILIZER SYSTEM
The engine immobilizer system is a theft prevention
system. When you insert the key in the ignition switch, the
transponder chip in the key's head transmits an electronic
code to the vehicle. The engine will start only when the
electronic code in the chip corresponds to the registered
ID code for the vehicle.
The system is automatically set when the key is removed from
the ignition switch. At this time, the security indicator light
flashes. When you insert the key in the ignition switch, the
security indicator light goes out and the system is canceled
automatically, which enables the engine to start.For your Lexus dealer to make you a new key with built-in
transponder chip, your dealer will need your key number and
master key. However, there is a limit to the number of
additional keys your Lexus dealer can make for you.
If you make your own duplicate key, you will not be able to
cancel the system or start the engine.
For vehicles sold in U.S.A.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.
CAUTION
Changes or modifications not expressly approved by
the party responsible for compliance could void the
user's authority to operate the equipment.

KEYS AND DOORS
18In the following cases, the battery in the key may be
discharged. If this is the case, replace it using a special
screwdriver.
The remote control does not work.
The operational range of wireless remote control becomes
extremely short.
The indicator light on the key is dimmed or does not come
on.
For the replacement of the battery, see Replacing the batteryº
on page 23. You can also have the battery of the key replaced
by your Lexus dealer.
If you lose the wireless key, contact your Lexus dealer as soon
as possible to avoid the possibility of theft, or an accident. (See
If you lose your keys or lock yourself outº on page 342.)
You can use up to 4 wireless remote control keys for the same
vehicle. Contact your Lexus dealer for detailed information.
The wireless remote control key is an electronic
component. Observe the following instructions in order
not to cause damage to the key.
Do not leave the wireless remote control key on places
where the temperature becomes high such as on the
dashboard.
Do not disassemble it.
Avoid knocking it hard against other objects or dropping it.
Avoid putting it in water.
Locking/unlocking the doors
When you push the LOCKº button on the key briefly, all
the doors can be locked from outside the vehicle.
At this time, one beep sounds and the turn signal lights flash
once.* However, when you push the LOCKº button with any
door not closed securely, the buzzer sounds for 10 seconds.**
To stop the buzzer, close all the doors securely or push the
UNLOCKº button. If the key is in the ignition switch, locking
cannot be done.
Make sure all the doors are locked when you leave the vehicle.
Push the LOCKº button once again.
NOTE:
* The turn signal lights can be set not to flash and the beep
volume can be changed.
** The buzzer can be set not to sound if a door is not closed
securely.
Ask your Lexus dealer for details.

KEYS AND DOORS
265. Replace the battery case cover.
6. Install the module into the key frame and secure the cover
with the screw.
7. When pushing any button on the wireless key, make sure
the indicator light comes on.
DOORS
Locking with key

1Lock2Unlock
Turn the key towards the front of the vehicle to lock and
towards the back to unlock.
The doors lock and unlock simultaneously with the driver's
door. Turning the key once will unlock the driver's door and
twice in succession will unlock all doors simultaneously.*
NOTE:
* The 2-step unlocking function can be changed.
Ask your Lexus dealer for details.
If a wrong key is used, the key cylinder rotates freely to isolate
inside mechanism. So, door locking is protected from thieves.
The windows and moon roof can be opened from outside the
vehicle using the key. For details, see page 52 and page 100.

KEYS AND DOORS
31

Security indicator light
Setting the system
1. Turn the ignition key to the LOCKº position and
remove it.
The engine immobilizer system causes the indicator light to
flash.
2. Close and lock all the doors, trunk and hood using an
ignition key or wireless remote control.
If you lock them with wireless remote control, the turn signal
lights flash once.
The flashing indicator light will remain on when all the doors,
trunk and hood are closed and locked.
3. After 30 seconds, the indicator starts flashing and the
system is set.
Cancelling the system
When you unlock any door or trunk using an ignition key
or wireless remote control, the system is cancelled.
If you unlock any door or trunk with wireless remote control, the
turn signal lights flash twice.
Activating the system
The alarm sounds for 60 seconds if any of the following are
operated:
Unlocking any door or trunk without using an ignition key or
wireless remote control
Opening the hood forcibly
Reconnecting the battery
If any door is unlocked and the ignition key is not in the ignition
switch during the alarm sounding, the door is automatically
locked.
To stop the alarm: Use either of the following methods.
Unlock the door using an ignition key or wireless remote
control.
Turn the ignition switch on.

SWITCHES
48
NOTICE
To prevent the wiper blades from being deformed, be
sure to hold the connection of the wiper arm and wiper
blade securely.
RETURNING TO THE RETRACTED POSITION
Push the connection of the wiper arm and wiper blade
downward.
NOTICE
To prevent the wiper blades from being deformed, be
sure to hold the connection of the wiper arm and wiper
blade securely.