engine LEXUS LS430 2005 Owner's Manual

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
34
Deactivating the smart key system
11L341b
 1Smart key system is on.
2Smart key system is off.
The cancel switch for this system is located at the bottom
of the instrument panel on the driver side. When you push
the button, the smart key system will be deactivated.
Pushing the button again will reactivate the system.
When the smart key system is deactivated, use a mechanical
key or wireless remote control function key to lock and unlock
the doors or unlock the trunk lid. To start the engine, insert a
smart key into the ignition switch.
If you do not intend to drive your vehicle for a long time, push
the cancel switch to deactivate the smart key system.
INFORMATION
The smart key system will be deactivated in the
following cases:
 The key cancel switch is turned on.
 The smart key is inserted into the ignition switch.
 The battery of the smart key is discharged. (In this
case, the indicator on the smart key does not blink
even if you push a button on the key.)

KEYS AND DOORS
50
THEFT DETERRENT SYSTEM
17L013
To deter theft of the vehicle, this system is designed to
sound an alarm if any of the doors, trunk or hood is
forcibly unlocked or opened or the battery terminal is
disconnected and then reconnected while the vehicle is
locked.
The alarm blows the horn intermittently, flashes the headlights,
tail lights, turn signal lights and other exterior lights. When the
interior light switch is in the “DOOR” position, the interior lights
also turn on.
After the alarm is activated, when you unlock any door or the
trunk using an ignition key or wireless remote control or smart
key system, the tail lights turn on for about 2 seconds to inform
you that the system was activated.
17L021
 Security indicator light
Setting the system
In the case of the smart key system:
1. Turn the ignition switch to the “LOCK” position.
The engine immobilizer system causes to the indicator light to
flash.
2. Close and lock all the doors, trunk and hood using an
ignition key or wireless remote control or smart key
system.
If you lock them with wireless remote control or smart key
system, the turn signals flash once.*
NOTE:
* The turn signals can be set not to flash.
Ask your Lexus dealer for details.

KEYS AND DOORS
51
The flashing indicator light will stay on when all the doors, trunk
and hood are closed and locked.
3. After 30 seconds, the indicator starts flashing and the
system is set.
After the system is set, when you close the trunk which is
opened
with an ignition key or wireless remote control or smart
key system, the system is set again. However, this function
operates only when the door is not unlocked during which the
trunk is opened and closed.
In case of the ignition switch with the key inserted:
1. Turn the ignition key to the “LOCK” position and
remove it.
The engine immobilizer system causes the indicator light to
flash.
2. Close and lock all the doors, trunk and hood using an
ignition key or wireless remote control or smart key
system.
If you lock them with wireless remote control or smart key
system, the turn signals flash once.*
NOTE:
* The turn signals can be set not to flash.
Ask your Lexus dealer for details.
The flashing indicator light will stay on when all the doors, trunk
and hood are closed and locked. 3. After 30 seconds, the indicator starts flashing and the
system is set.
After the system is set, when you close the trunk which is
opened
with an ignition key or wireless remote control or smart
key system, the system is set again. However, this function
operates only when the door is not unlocked during which the
trunk is opened and closed.
Cancelling the system
When you unlock any door using an ignition key , wireless
remote control or smart key system, the system is
cancelled.
If you unlock any door with the wireless remote control or smart
key system, the turn signals flash twice.*
NOTE:
* The turn signals can be set not to flash.
Ask your Lexus dealer for details.

SWITCHES
55
12L054b
The automatic light control sensor is on the top center of the
instrument panel.
Do not place anything on the instrument panel, and/or do not
affix anything on the windshield to block this sensor.
When you turn on the headlights, the lights automatically turn
off about 30 seconds after any of the doors is opened and
closed with the ignition switch turned to the “ACC” or “LOCK”\
position.* To turn them on again, turn the ignition switch to the
“ON” position, or turn the headlight switch off and then twist the
knob until the first or second clickstop. If you are going to park
for over one week, make sure the headlight switch is off.
When the headlight switch is on with all the doors locked and
the trunk closed, pushing the “LOCK” button on the wireless
remote control key turns off the headlights.
NOTE:
* The time before turning off the lights can be changed.
Ask your Lexus dealer for details. Daytime Running Light System
The headlights turn on at reduced intensity when the parking
brake is released with the engine started, even with the light
switch in the “OFF” position. They will not go off until the
ignition switch is turned off.
To turn on the other exterior lights and instrument panel lights,
twist the knob to the first clickstop.
Twist
the knob to the second clickstop to turn on the headlights
to full intensity for driving at night.
When setting the knob to the third clickstop (“AUTO”), the
headlights will automatic ally adjust to full intensity and/or turn
on the other lights depending on the darkness of the
surroundings. Likewise, as the surroundings become brighter,
the headlights will turn to reduced intensity, ultimately turning
off the other lights.
NOTICE
To prevent the battery from being discharged, do not
leave the lights on longer than necessary when the
engine is not running.

SWITCHES
64The thin heater wires on the inside of the rear window and the
heater
panels in the outside rear view mirrors will quickly clear
the surface. Keep your hands off the mirror faces when the
switch is on. An indicator light is on when the defogger is
operating.
The system will automatically shut off when the defogger has
operated about 15 minutes.
CAUTION
Since the mirror surfaces can get hot, do not touch them
when the switch is on.
If further defrosting or defogging is desired, simply actuate the
switch again. When the surface has cleared, push the switch
once again to turn the defogger off. Continuous use may cause
the battery to discharge, especially during stop− and−go
driving. The defogger is not designed to dry rain water or to
melt snow.
If the outside rear view mirrors are heavily coated with ice, use
a spray de −icer before operating the switch.
NOTICE
 When cleaning the inside of the rear window, be
careful not to scratch or damage the heater wires or
connectors.
 To prevent the battery from being discharged, turn
the switch off when the engine is not running.
POWER WINDOW SWITCHES
12L248
 1
For driver’s window
2For front passenger’s window
3For left rear window
4For right rear window
To raise or lower the windows, use the switch on each
door. The passengers’ windows can also be controlled by
the switches on the driver’s door.
The power windows work when the ignition switch is in the
“ON” position.
Retained accessory power: Even if the ignition switch is
turned to the “ACC” or “LOCK” position with all the doors
closed, the window can be operated until any of the doors is
opened (or for about 45 seconds).

SWITCHES
68
EMERGENCY FLASHER SWITCH
12L251
Vehicles with navigation system
12L252
Vehicles without navigation system
To turn on the emergency flashers, push the switch. To
turn them off, push the switch again. All the turn signal lights will flash. The emergency flashers will
work with the engine running or off and with or without the
ignition key.
Turn on the emergency flashers to warn other drivers if you
must stop your vehicle where it might be a traffic hazard.
Always pull your vehicle as far off the road as possible.
The turn signal light switch will not work when the emergency
flashers are in operation.
NOTICE
To prevent the battery from being discharged, do not
leave the switch on longer than necessary when the
engine is not running.

SWITCHES
70
CAUTION
Occupants must use caution when operating the seat
heater because they may experience minor burns even
at low temperatures. Use extra caution for;
Babies, small children, elderly persons, sick persons
or persons with physical disabilities
 Persons who have delicate skin
 Persons who are exhausted
 Persons who have taken alcohol or drugs which
induce sleep (sleeping drug, cold remedy, etc.).
To prevent the seat from overheating, do not use the
seat heater with a blanket, cushion, or other insulating
objects which cover the seat.
NOTICE
 Do not put unevenly weighted objects on the seat and
do not stick sharp objects (needles, nails, etc.) into
the seat.
 When cleaning the seats, do not use organic
substances (paint thinner, benzine, alcohol,
gasoline, etc.). They may damage the heater and seat
surface.
 To prevent the battery from being discharged, turn
the switches off when the engine is not running.

SWITCHES
73
CAUTION
Use caution when operating the climate control seat.
The occupants listed below may experience minor
burns even at low temperatures from warm air.
Babies, small children, elderly persons, sick persons
or persons with physical disabilities
 Persons who have delicate skin
 Persons who are exhausted
 Persons who have taken alcohol or drugs which
induce sleep (such as sleeping drugs or cold
remedies).
To prevent the seat from overheating, do not use the
climate control seat if a blanket, cushion, or other
insulating object covers the seat. Use also caution not
to overuse this feature, which may cool down the
occupants excessively.
NOTICE
 Do not put unevenly weighted objects on the seat .
Do not stick sharp objects (such as needles or nails)
into the seat.
 When cleaning the seats, do not use harsh cleaning
substances (such as paint thinner, benzine, alcohol
or gasoline). They may damage the climate control
seat and seat surface.
 Clean the seats using a towel wrung out of water.
Entering water in the seats may cause the
malfunction of the climate control seats.
 To prevent the battery from being discharged, turn
the switches off when the engine is not running.