Lexus LX 470 1998 Owner's Manual page 29

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 14. 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.
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
on the key.
D Do not leave the wireless remote control key on the 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.
12
Locking/Unlocking the doors
When you push the "LOCK" button on the key, all the doors can
be locked from outside the vehicle.
At this time, you can hear one beep and tail lights flash. 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.
When you push the "UNLOCK" button, the driver's door is
unlocked. Pushing that button once again within 3 seconds from
the first push, all other doors are also unlocked.
At this time, two beeps sound and tail lights flash.
You have 30 seconds to open a door after using the wireless remote
unlock feature. If a door is not opened by then, all the doors will be
automatically locked again. This function does not work when the
ignition key is inserted.
Even if the "LOCK" or "UNLOCK" switch is kept pressed in, the
locking or unlocking operation is not repeated. Release the button
and then push again.