2004 Lexus ES330 key battery

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
23
Increase the separation between the equipment
and receiver.
Connect the equipment into an outlet on a circuit
different from that to which the receiver is
connected.
Consult the dealer or an experienced radio / TV
technician for help.
FCC WARNING:
Changes or modifications not expressly approved
by the party responsible for compliance could void
the user's authority to operate the equipment.
For vehicles sold in Canada
Operation is subject to the following two conditions:
(1) this device may not cause interference, and (2)
this device must accept any interference, including
interference that may cause undesired operation of
the device.
Replacing the battery
When you replace the battery, prepare a lithium battery
CR2016 or equivalent and a special screwdriver.
CAUTION
Special care should be taken to prevent small children
from swallowing the removed battery or components.
NOTICE
When replacing the battery, be careful not to lose the
components.
Replace only with the same or equivalent type
recommended by a Lexus dealer.
Dispose of used batteries according to the local laws.

KEYS AND DOORS
24
1. Remove the screw, and then the cover while pushing it in the
arrow direction.
2. Remove the module from the key frame.
3. Open and remove the battery case cover using a coin.
4. Remove the discharged battery and put in a new battery
with the positive side up.

KEYS AND DOORS
25
NOTICE
Make sure the positive side and negative side of the
battery are faced correctly.
Do not replace the battery with wet hands. Water may
cause unexpected rust.
Do not touch or move any components inside of the
transmitter, or it may interfere with proper operation.
Be careful not to bend the electrode of the battery
insertion and that dust or oils do not adhere to the
inside of the module.
Take care not to lose the screws.

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
30
Locking with rear door child-protector

1Unlock2Lock
Whenever small children are in the vehicle, lock the rear
door so that it does not open from the inside. To do this,
move the lever to the lock position as shown on the label
next to the lever.
THEFT DETERRENT SYSTEM
To deter theft of the vehicle, this system is designed to
sound an alarm if any of the doors, trunk or hood is
forcibly unlocked or the battery terminal is disconnected
and then reconnected while the vehicle is locked.
The alarm blows the horn intermittently and flashes the
headlights, tail lights and turn signal lights.
Further more when the interior light switch is in the DOORº
position, the interior light turns on.
After the alarm is activated, when you unlock any door using
an ignition key or wireless remote control, the tail lights turn on
for about 2 seconds to inform you that the system was
activated.

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.

KEYS AND DOORS
32
Testing the system
1. Open all the windows.
2. Set the system as described above.
The front doors should be locked with the ignition key or
wireless remote control. Be sure to wait until the indicator light
starts flashing.
3. Unlock one of the doors from the inside.
The system should activate the alarm.4. Unlock any of the doors with a key or the wireless
remote control to cancel the system.
5. Repeat this operation for the other doors and hood.
When testing 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
Lexus dealer.
NOTICE
Disconnecting the battery may result in the erasure of
information you have set in the computer memory. After
reconnecting the battery, check that the memorized
data has been retained. If it has been erased, input it into
the computer once more.