lock LEXUS LS430 2005 User Guide

KEYS AND DOORS
15
Flat key
11g039c
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 the engine immobilizer system has
been placed in the key case of the flat key. This chip is required
for 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 flat 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
11L050a
1. Remove the key plate from the key case.
2. Insert the key plate into the ignition switch. The security
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
system” on page 17.) You can put the key case away then. You
cannot cancel the engine immobilizer system if 10 seconds
have passed 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 passed 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
17
11L358
Do not bend the key grip or flat key.
 Do not cover the key grip or flat key with any material
that cuts off electromagnetic waves.
 Do not knock the key or flat key hard against other
objects.
 Do not leave the key or flat key exposed to high
temperatures for a long period, such as on the
dashboard or hood under direct sunlight.
 Do not put the key or flat key in water or wash it in an
ultrasonic washer.
 Do not use the key or flat key with electromagnetic
materials.
ENGINE IMMOBILIZER SYSTEM
Deactivation using the smart key system
11L222a
The engine immobilizer system is a theft prevention
system. When you enter the vehicle carrying a smart key
and push the ignition switch, the electronic code in the
key is automatically checked to determine whether it
corresponds to the registered ID code for the vehicle. If
the key indicator light comes on after the ID code
verification, you can start the engine.
This system is automatically set when the ignition switch is
turned to the “LOCK” position. At this time, the security
indicator light flashes. When you push the ignition switch, the
security indicator light goes out and the system is cancelled
automatically, which enables the engine to start.
The engine immobilizer system cannot be cancelled if the
cancel switch of the smart key system is turned on. For details,
see “Deactivating the smart key system” on page 34.

11L229c
KEYS AND DOORS
20
SMART KEY SYSTEM (Master keys only)
 1Locking and unlocking 2Unlocking the trunk lid 3Key indicator 4Starting the engine
By carrying a smart key, which is different from a conventional key that is inserted in the key\
holes or ignition switch, you
can lock and unlock the doors, unlock the trunk and start the engine.
For locking the doors, see “Locking the doors with the smart key system”\
on page 25. For unlocking the doors, see “Unlocking t he
door(s) with smart key system” on page 28. For unlocking the trunk lid, see \
“Unlocking the trunk lid with smart key system” on page
31. For starting the engine, see “Smart ignition system with steerin\
g lock” on page 298.
If the smart key battery is discharged, the smart key system cannot be use\
d. Use the mechanical key integrated into the smart key
by inserting it in the door keyhole to lock or unlock doors and into the\
trunk lid keyhole to unlock the trunk lid. To start t he engine,
insert the smart key. In order to activate the smart key system, the battery should be replaced. For details, see “Replacing the battery
(Type A)” on page 42.
You can deactivate the smart key system by using the cancel switch. In th\
is case, all the functions in the smart key system wi ll be
deactivated. For details, see “Deactivating the smart key system” on page 34.\

KEYS AND DOORS
21
INFORMATION
Be sure to take the smart key with you.
 In the following cases, the smart key system or
wireless remote control feature may not operate
properly. (If this happens, use a mechanical key to
lock or unlock the doors and trunk lid and a smart key
to start the engine.)
When facilities issuing strong electromagnetic
waves such as TV towers, electric power stations,
broadcasting stations are nearby.
When you are carrying a smart key together with a
mobile communications system such as a
twoway radio or cellular phone.
When the smart key is in contact with or covered
by a metallic object.
When another person is operating a wireless
remote control function on another vehicle near
your vehicle.
 If you do not drive your vehicle, store the smart key,
keeping it at least 5 m (15 ft.) away from the vehicle.
Alarms and warning messages
Your Lexus is equipped with alarms inside and outside, as
well as warning messages in the multiinformation
display, that remind you if there is a problem involving the
smart key system.
Cases which are expected to happen frequently are
shown in the illustrations and the other cases are
described in the table. If an alarm or warning message
comes on, check to see what the problem is referring to
the illustrations and table, and take the appropriate
measure.

KEYS AND DOORS
22
11L230a
When a door is opened and closed with the ignition
switch in the “ACC” or “ON” position and with the
selector lever in the “P” position, and then the smart key
is carried outside of the vehicle.
Inside alarm: One chime
Outside alarm: 3 beeps
Multiinformation display: “Key is not Detected”
See page 100 for details.
11L231a
 When you attempted to lock the door(s) with the smart
key still in the vehicle or without turning off the ignition
switch.
Outside alarm: One beep (sounds for 2 seconds)
See page 26 and 27 for details.

KEYS AND DOORS
23
11L232b
When you lock the smart key in the trunk or attempt to
lock a door which is not completely closed.
Outside alarm: One beep (sounds for 10 seconds)
See page 27 and 32 for details.

KEYS AND DOORS
24Inside warning alarm
Outside warning
alarmMulti−information
warning message displayCausesReference page
ChimesNoneNoneYou opened a door without
turning off the ignition
switch.47
BeepNone“Shift to P Range”You opened a door without
turning off the ignition switch
when the selector lever is in
a position other than “P”.100
BeepBeep“Shift to P Range” and “Key
is not Detected” appear
alternately.You exited and closed a
door without turning off the
ignition switch when the
selector lever is in a position
other than “P”.100
One chimeNone“Low Key Battery”
(shown for about 5 seconds)Smart key battery power is
insufficient.101
One chimeNone“Key is not Detected”
(shown for about 5 seconds)The smart key was not in the
vehicle when you pushed
the ignition switch in the
“LOCK” position.100

KEYS AND DOORS
25
Locking the doors with smart key system
11L224
The smart key system will lock the doors without being
inserted into the door keyhole.
When you exit the vehicle carrying the smart key and push the
lock button on the outside door handle with all the doors
closed, all the doors will be locked provided that the electronic
code in the key corresponds to the registered ID code for the
vehicle.
At this time, you will hear one beep and the turn signal lights
flash once. However, when you push the lock button on the
outside door handle with any door not closed securely, a beep
sounds for 10 seconds. (For details, see page 27.)
If outer foot lights are illuminated, you can turn off the lights by
pushing the “LOCK” button on the smart key. (For details, see
“Outer foot lights” on page 233.)
INFORMATION
 When locking the doors, be sure to push the lock
button on the outside door handle slowly and surely.
If you push the button quickly, the doors may not
lock.
 When opening or closing a door, do not touch the
lock button on the outside door handle.
 When a wireless key is used to lock the doors and a
smart key is left in the ef fective range of the smart key
system in the vehicle, the doors cannot be unlocked
using the smart key system. In this case, use the
wireless remote function to unlock the doors.
 You cannot activate smart unlocking functions
within 3 seconds after the smart locking function is
activated.

KEYS AND DOORS
26The 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.
INFORMATION
 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.
 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.
 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.

KEYS AND DOORS
27
11L234a
Ignition on/off reminder alarm
If you push the lock button on the outside door handle
without turning off the ignition switch, an alarm sounds
for 2 seconds and the doors will not lock.
Before you push the lock button, make sure the ignition switch
is in the “LOCK” position.
11L235b
 Open door warning
If you push the lock button on the outside door handle
while any door is not completely closed, an alarm sounds
for 10 seconds and the doors will not lock.
To stop the alarm, close all the doors securely or push the
“UNLOCK” button on the smart key.
Before you push the lock button, make sure all the doors are
securely closed.