Lexus ES300 Owner's Manual page 30

KEYS AND DOORS
In the following cases, the battery in the key may be
discharged. If this is a case, replace it using a special
screwdriver.
D The remote control does not work.
D The operational range of wireless remote control becomes
extremely short.
D The indicator light on the key is dimmed or does not come
on.
For the replacement of the battery, see "Replacing the battery"
on page 20. 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 out" on page 285.)
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.
D Do not leave the wireless remote control key on places
where the temperature becomes high such as on the
dashboard.
D Do not disassemble it.
D Avoid knocking it hard against other objects or dropping it.
D Avoid putting it in water.
16
Locking/Unlocking the doors
When you push the "LOCK" 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 "LOCK" 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
"UNLOCK" 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 "LOCK" 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.
NOTICE
Do not push the "LOCK" button any longer than 2 to 3
seconds. Pushing the button longer activates an alarm.
For details, see page 18.