2005 LEXUS LS430 engine

00L100a
00L101a
Parking, tail, license plate,
side marker and instrument
panel lights turn on.
Headlights also turn on
at full intensity.
Automatic light control Parking, tail, license plate,
side marker and instrument
panel lights turn on.
Headlights also turn on.
Automatic light control
00L103a
00L102a
Right or left turn
Lane change
(Right or left) High beam
Headlight flasher
QUICK REFERENCE
6
4. HEADLIGHT AND TURN SIGNAL SWITCH
HEADLIGHT SWITCH
With the ignition OFF
With the engine started and parking brake
released
 HEADLIGHT DIMMER SWITCH
 TURN SIGNAL SWITCH

SECTION 1 – 1
9
INSTRUMENTS AND CONTROLS
Keys and doors
Keys10
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . . . . . . . . . . . . .
Engine immobilizer system 17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Smart key system 20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\
. . . .
Wireless remote control 36
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Doors 46
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \
. . . . . . . . . . . . . . .
Theft deterrent system 50
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .\

KEYS AND DOORS
10
KEYS
Vehicles equipped with smart key system
(Type A)
11L218
1Mechanical keys (attached to the master keys)
These keys work for the doors, trunk, trunk main
switch, glove box and trunk storage extension door,
but cannot start the engine.
2Mechanical key (attached to the valet key) This key
works for the doors, but cannot start the engine and
does not work for the trunk, trunk main switch, glove
box and trunk storage extension door.
3 Key number plate Keep the plate in a safe place
such as your wallet, not in the vehicle.
4Smart keys (master keys) These keys will activate
the smart key system. They will not work for the trunk
main switch, glove box and trunk storage extension
door.
5Smart key (valet key) This key does not work for the
trunk, trunk main switch, glove box and trunk storage
extension door. This key cannot activate the smart
key system.
Before you use these keys, be sure to read “Smart key system”
on page 20.
11L219
 Using a mechanical key
1
Lock switch
2Mechanical key
When you use the mechanical key included on the side of the
smart key, slide the lock switch in the arrow direction and pull
the key as shown. To put the key back, slide the lock switch
in the arrow direction and slide the key back. Be sure to put the
key back when not in use.

KEYS AND DOORS
11
A transponder chip for the engine immobilizer system has
been placed in the master and valet keys. These chips are
required for the
system to function correctly, so be careful not
to lose these keys. If you make your own duplicate key, you
will not be able to cancel the system or start the engine.
To protect items locked in the trunk or glove box when using
valet parking, leave the valet key with the attendant.
Since the doors and the trunk lid can be locked without a key,
you should always carry a spare master key in case you
accidentally lock your keys inside the vehicle.
If you should lose your keys or if you need additional keys,
duplicates can be made by a Lexus dealer using the key
number.
We recommend writing down the key number and storing it in
a safe place.
Flat keys
11L250
 1 Mechanical flat key 2Engine start flat key
A mechanical flat key and an engine start flat key are
included in the key case. Both flat keys are not equipped
with smart key system.
The mechanical flat key works in every lock, but cannot
be used to start the engine.
As a transponder chip is built in the engine start flat key,
you can start the engine only with this key.
A transponder chip for the engine immobilizer system has
been placed in the engine start 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 plates 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.

KEYS AND DOORS
12
Starting the engine using an engine start flat
key
11L251a
1. Remove the engine start flat key from the key case.
2. Insert it into the ignition switch.
The flashing security indicator light goes out. This means the
engine immobilizer system is automatically canceled. (For
details, see “Engine immobilizer system” on page 17.)
NOTICE
Do not let the key case become bent as the flat keys
may fall out or become bent also.
 The flat keys are designed for emergency use only, so
do not use them regularly instead of the other master
keys.
11L220
NOTICE
When using a key containing a transponder chip,
observe the following precautions:
 When starting the engine, do not use the key with a
key ring resting on the key grip and do not press the
key ring against the key grip. Doing so may prevent
the engine from starting, or may cause the engine to
stop soon after it starts.

KEYS AND DOORS
13
11L221
When starting the engine, do not use the key in
proximity with other transponder keys (including the
flat key and keys of other vehicles), and do not press
other key plates against the key grip. Doing so may
prevent the engine from starting, or may cause the
engine to stop soon after it starts. If this happens,
remove the key once and then insert it again after
removing other transponder keys (including the flat
key and keys of other vehicles) from the ring or while
gripping or covering them with your hand to start the
engine.
11L241a
 Do not bend the key grip or flat keys.
 Do not cover the key grip or engine start flat key with
any material that cuts off electromagnetic waves.
 Do not knock the key or flat keys hard against other
objects.
 Do not leave the key or flat keys 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 keys in water or wash it in
an ultrasonic washer.
 Do not use the key or engine start flat key with
electromagnetic materials.

KEYS AND DOORS
14
Vehicles not equipped with smart key system
(Type B)
11L025c
1Master keys (black) These keys work for every lock.
For your Lexus dealer to make a new key with a
builtin transponder chip, your dealer will need one
of them.
2 Valet key (gray) This key will not open the trunk,
trunk main switch, the glove box and trunk storage
extension door.
3Key number plate Keep the plate in a safe place
such as your wallet, not in the vehicle.
A transponder chip for the engine immobilizer system has
been placed in the head of the master and valet keys. These
chips are required for the system to function correctly, so be
careful not to lose these keys. If you make your own duplicate
key, you will not be able to cancel the system or start the
engine. To protect items locked in the trunk or glove box when using
valet parking, leave the valet key with the attendant.
Since
the doors and trunk lid can be locked without a key, you
should always carry a spare master key in case you
accidentally lock your keys inside the vehicle.
If you should lose your keys or if you need additional keys,
duplicates can be made by a Lexus dealer using the key
number.
We recommend writing down the key number and storing it in
a safe place.

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.