Toyota LEXUS LS430 2005 Manual page 45

KEYS AND DOORS
The doors cannot be locked using the smart key system
in the following conditions:
11L233a
"Key reminder alarm
If you push the lock button on the outside door handle
with a smart key left in the vehicle, an alarm sounds for 2
seconds and the doors will not lock.
Before you push the lock button, make sure you are carrying
the smart key.
26
INFORMATION
D Do not put a smart key on the instrument panel, rear
package tray or floor, or in the glove box or auxiliary
box near the selector lever, which falls outside of the
effective range of the smart key system. As the alarm
does not sound when a key is left in such a place, you
might accidentally lock the doors by pushing the lock
button on the outside door handle and be locked out
of the vehicle. Be sure to take the smart key with you.
D If you have the smart key but bring it very close to the
window or outside door handle, the alarm might
activate. In this case, keep the smart key a certain
distance away from the window or outside door
handle and then push the lock button again.
D If the smart key is left in the vehicle, attempting to
lock the door by pushing in the button located in the
inside door handle and holding up the outside door
handle will unlock all the doors and activate the alarm
for 2 seconds.