2005 LEXUS LS430 passenger

AIR CONDITIONING
243
(a) Climate control
SETTING OPERATION automatic control
21L054a
1. Push the “AUTO” button.
Air flow quantity, switching of the diffusers, on−off of the air
conditioning, and switching of the air intake between
RECIRCULATED AIR and OUTSIDE AIR are automatically
adjusted. If you use the air purifier automatic mode at the same
time, air purifying effect will be enhanced (If equipped). The
operation status is shown by each indicator.
When one of the manual control buttons is depressed while
operating in automatic mode, the mode relevant to the
depressed button is set. Other conditions continue to be
adjusted automatically.
Push the “OFF” button briefly to turn the air conditioning off.
If you keep the “OFF” button pushed, the data for the air filter
is reset.
21L283
2. Use the “TEMP” or “PASSENGER TEMP” button to set
the desired temperature.
The “TEMP” or “P ASSENGER TEMP” button is used to set the
desired temperatu re. The temperatur e will be controlled on the
driver and front and rear passenger sides (if rear air
conditioning is equipped) simultaneously or individually. The
figures on the panel indicate degrees Fahrenheit or
Centigrade.
“TEMP” button − Changes the temperature on the driver and
front and rear passenger sides (if rear air conditioning is
equipped) simultaneously or individually.
“PASSENGER TEMP” button − Changes the temperature
settings separate from the driver side.
“DUAL” button − Changes the mode of the temperature
setting.

AIR CONDITIONING
244The indicator on the “DUAL” button has two modes:

With the indicator on − For individual temperature setting
 With the indicator off − For simultaneous temperature
setting
21L191
Driver side setting
Passenger side setting
Mixed setting

AIR CONDITIONING
245
SETTING OPERATION manual control
When one of the manual control buttons is depressed
while operating in automatic mode, the mode relevant to
the depressed button is set. Other conditions continue to
be adjusted automatically.
If manual air flow selection is desired
21L066
The outlets from which air is delivered can be selected
manually by
pushing the button. The function of each mode is
as follows:
1 Panel − Air flows mainly from the instrument panel vents
and rear vents.
2 Bilevel − Air flows from both the floor vents, the
instrument panel vents and rear vents.
3 Floor − Air flows mainly from the floor vents and rear
vents.
4 Floor/Windshield − Air flows mainly from the floor vents
and windshield vents. Take in the fresh air by selecting the OUTSIDE AIR mode with
the air intake control button.
If quick heating or cooling is desired
Push the “TEMP” or “PASSENGER TEMP” button on either
side
and hold it until “MAX. HOT” or “MAX. COLD” appears on
the display.
If manual fan speed control is desired
21L059
 1 Fan speed at low 2Fan speed at high
The fan speed can be set to your desired speed by pushing the
appropriate side of fan speed control button. The higher the
fan speed is, the more air is delivered. Pushing the “OFF”
button briefly turns off the fan.
To remove exterior windshield frost, use the high speed
setting.

AIR CONDITIONING
252
(d) Operating tips
Make sure the air inlet grilles in front of the windshield are
not blocked by leaves or other obstructions.
 If air flow control is not satisfactory, check the dashboard
vents. (See “Center vents”, “Side vents” and “Rear vents”.)\
 To help cool down the interior after parking in the hot sun,
drive for the first few minutes with the windows open. After
the excess heat has blown away, close the windows.
 When driving on dusty roads, close all windows. If dust
thrown up by the vehicle is still drawn into the vehicle after
closing the windows, it is recommended that the air intake
control button be left to the OUTSIDE AIR mode and the fan
speed control button be pressed to anywhere except the
“OFF” button.
 If following another vehicle on a dusty road, or driving in
windy and dusty conditions, it is recommended that the air
intake control button be temporarily pressed in to the
RECIRCULATED AIR mode, which will close off the outside
passage and prevent outside air and dust from entering the
vehicle interior.
Center vents
21L064a
The center vents may be opened or closed as shown.
21L057b
Push the swing button to swing the vanes.
The vanes directly aimed at the driver and front passenger will
swing wider as the room temperature nears the desired
temperature. The swinging angle will also change from narrow
to wide depending on the room temperature.

AIR CONDITIONING
253
21L058a
When you push the swing button with no passenger in the
front seat and the “DUAL” button ON (with the indicator
on):
The vanes directly aimed at the driver and rear passenger will
swing wider as the room temperature nears the desired
temperature. The swinging angle will also change from narrow
to wide depending on the room temperature.
When you push the swing button with no passenger on
the front seat and “DUAL” button OFF (with the indicator
off):
The vanes directly aimed at the driver will swing wider as the
room temperature nears the desired temperature. The
swinging angle will also change from narrow to wide
depending on the room temperature.
Side vents
21L065
The side vents may be opened or closed as shown.

AIR CONDITIONING
255
These
are the controls added to the front air conditioning when
your vehicle is equipped with a rear air conditioning. The
controls for the rear passengers and for the front passengers
both work the same, so operation can be made with the
controls on either panel.
(a) Controls and Functions
This rear air conditioning is equipped with dustproof and
deodorant filter with photocatalyst. When light in the
xenon tube (ultraviolet rays) hits the filter, odious
ingredients adsorbed in the filter are oxidized and
decomposed to deliver clean air in the interior.
REAR AIR CONDITIONING ONOFF
Push the “AUTO” button to turn the air conditioning on,
and push the “OFF” button to turn it off.
AIR FLOW CONTROL
The mode changes every time the “LO HI A/C” button is
pushed.
AUTO mode − Turns the fan operation to automatic.
LO speed mode − Turns the fan at low speed.
HI speed mode − Turns the fan at high speed.
(b) Rear Cooling
1. Turn the front air conditioning on. The rear cooler will not
turn on if the front air conditioning is off.
2. Turn the rear air conditioning on. The fan speed and rear
cooler are adjusted automatically.
3. Use either of the “LO HI A/C” buttons to adjust the desired
fan speed and the rear cooler. Each indicator light shows
which mode is now selected.
(c) Air Purifier
The air purifier operates whenever the rear air conditioning or
the rear fan operation is on, regardless of front air conditioning
activation.

STARTING AND DRIVING
372
Tire pressure warning system reset switch
31L568b
The tire pressure warning system needs to be initialized
after tires or wheels are replaced or rotated.
To initialize the system, perform the following:
1. Park the vehicle at a safe place with the parking brake
applied and turn the ignition switch to “LOCK”.
2. Adjust the pressure of all the installed tires to the specified
level. (See “Tires and wheels” on pages 463 through 465.)
3. Turn the ignition switch to “ON”.
If the low tire pressure warning message “Low Tire” appears
in the multi−information display, push the reset switch for a few
seconds and make sure the warning message goes off.
4. With the vehicle stopped, push and hold the reset switch
until “Pressure Initial” appears in the multi−information display.
W266
Initialization is completed after driving at the speeds of 30
km/h (19 mph) or over for more than one hour. If the
following driving conditions are satisfied, initialization
will be completed in about one hour.
 The vehicle speeds is between 50 km/h (31 mph) and
100 km/h (62 mph).
 The roads are dry, smooth and straight.
 The number of passengers is one or two (including the
driver).
If you make a mistake in the middle of initialization, perform the
operation from the beginning again.
Do not push the reset switch without adjusting the tire inflation
pressure to the specified level. Otherwise, the low tire
pressure warning may not turn on even if the tire inflation
pressure is low, or it may turn on when the tire inflation
pressure is actually normal.
If you push the reset switch while driving, initialization is not
performed.
If “Pressure Initial”does not appear when the reset switch is
held down, the system may be malfunctioning. Have your
vehicle checked by your Lexus dealer as soon as possible.

STARTING AND DRIVING
378
Precaution for precollision safety system
It should be noted that the pre−collision sensor may detect the
following as the objects with which your vehicle might collide,
and the pre −collision safety may operate, even though there
is no possibility of collision.
 When traveling through a curve, there is an object on the
edge of the road.
 When traveling through a curve, another vehicle is passing
from the opposite direction.
 When traveling across a narrow iron bridge.
 When there is a metallic object on the road.
 When there is a steel plate on the road at a construction site.
 When there is a bump on the road.
 When waiting to turn to the left in an intersection, and
another vehicle is passing from the opposite direction.
 If your vehicle approaches another vehicle ahead very
quickly.CAUTION
Do not rely solely on the precollision safety system
to avoid accidents. Your safe and attentive driving
practices are still the best way to avoid accidents and
you are always responsible for the operation of the
vehicle and the safety of your passengers. When
driving, always pay attention to the surrounding
conditions and the course you are driving.
 The precollision sensor’s collision detection
performance is limited. The sensor is able to detect
a forward object within 10 degrees on either left or
right side. If it is out of the range, or if there is no or
weak millimeter wave reflection, the sensor could not
detect the object and the system does not work
properly.
 Even if the precollision safety is operative in an
unavoidable collision, unless the seat belts are worn
and the brake pedal is depressed, the precollision
seat belts and precollision brake assist system will
not work.