LEXUS LS430 2005 Owners Manual

AIR CONDITIONING
242
21L190b
Air flow selectionAutomatic air flow mode only

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
246If manual switching of air intake is desired
21L060a

Vehicles with rear air conditioning
21L156
Vehicles without rear air conditioning Each time you push the air intake control button, the mode
changes in order from the RECIRCULATED AIR mode to
AUTOMATIC mode to OUTSIDE AIR mode, then back to the
RECIRCULATED
AIR mode. Each indicator light shows which
mode is now selected.
1 RECIRCULATED mode If quick circulation of cooled air
is desired, select this mode.
2 EXHAUST GAS AUTOMATIC mode If the outside air
contains harmful substances like exhaust gas (i.e., when
the vehicle running just in front of your vehicle accelerates
rapidly), the system changes automatically from the
OUTSIDE AIR mode (with indicators
2
and 3 on) to
the RECIRCULATED mode (with indicators 1
and 2
on). If you use the EXHAUST GAS AUTOMATIC mode
and the air purifier automatic mode at the same time, air
purifying effect will be enhanced (If equipped).
3 OUTSIDE AIR mode The system will take fresh outside
air into the vehicle.
Turning off the air conditioning manually will cancel the
EXHAUST GAS AUTOMATIC mode. If you select the “AUTO”
mode during fan operating, the air conditioning turns on and
the EXHAUST GAS AUTOMATIC mode will operate.
For normal use, it is best to keep the air intake control button
set to OUTSIDE AIR mode. If recirculated air is used during
heating, the windows will fog up more easily.
To change the sensitivity of the sensor switching between
the RECIRCULA TED and OUTSIDE AIR in the AUTOMATIC
mode, push the air intake control button until you hear a
beep. The display changes as illustrated below.

AIR CONDITIONING
247
The sensitivity of the sensor can be adjusted only while the
vehicle has stopped.
21L108
When
you push either side of the “TEMP” button several times,
the sensitivity changes from “+3” down to “–3”. If you d\
o not
operate any button for a few seconds, the previous display
returns.
If manual onoff of the air conditioning is desired
Push the “A/C” button to turn the air conditioning on and push
it again to turn the air conditioning off. If you turn off the air
conditioning manually, the EXHAUST GAS AUTOMATIC
mode will be cancelled.
If the outside temperature is lowered down to around 0 C
(32 F), the air conditioning will turn off automatically. At this
time, the indicator on the A/C button is off and the EXHAUST
GAS AUTOMATIC indicator light remains on. However, the
EXHAUST GAS AUTOMA TIC mode does not operate. When
the air conditioning turns on as with the raised temperature, the
EXHAUST GAS AUTOMATIC mode resumes. If the system is used for ventilation, heating in dry weather or
removing frost or exterior fog on the windshield, turn the air
conditioning off
once it is no longer required. This will improve
fuel economy. The air conditioning can be used for year −round
automatic temperature control including cooling and
dehumidifying operation.
If the air conditioning compressor does not operate, the
indicator of the “A/C” button will blink. If the indicator of the
“A/C” button blinks even when the “A/C” button is pushed
again, have the compressor checked by your nearest Lexus
dealer.

AIR CONDITIONING
248
(b) Windshield defogging and defrosting
21L068a
To remove interior fog on the windshield
Push the “FRONT WINDSHIELD” button.
To remove frost or exterior fog on the windshield
1. Place the temperature control button at the maximum
temperature.
2. Push the “FRONT WINDSHIELD” button.
3. Push the fan speed control button on the right side to obtain
a maximum air flow.
4. Leave the “A/C” button off.
When the “FRONT WINDSHIELD” button is pushed while
operating in automatic mode, the air conditioning is set to
operate and the OUTSIDE AIR mode is set. If you push the “FRONT WINDSHIELD” button once again
while in the FRONT WINDSHIELD mode, the mode then
returns to the last mode used.
CAUTION
Do not use the “FRONT WINDSHIELD” button during
cooled air operation in extremely humid weather. The
difference between the temperature of the outside air
and that of
the windshield could cause the outer surface
of the windshield to fog up blocking your vision.
When you turn the ignition switch on after the removal and
installation of the battery terminal, the indicator light may flash
and the operating sound of the motor may be heard. This does
not indicate a malfunction.
You may hear the operating sound of the motor about 70
seconds after the ignition switch is turned off. This does not
indicate a malfunction.

AIR CONDITIONING
249
(c) Replacing the air conditioning filter
21L203
The air conditioning filter is behind the glove box.
The air conditioning filter prevents dust from entering the
vehicle through the air conditioning vent.
If the “Change A/C Filter” appears on the multi−information
display, change the air conditioning filter as soon as possible
because the air filter might have clogged.
The filter may clog after long use which will reduce the air flow.
1. When you replace the filter, be sure to turn off the fan.
21L204
 1Partition
2. Open the glove box and remove the partition.
21L205
 1 Cover 2Levers
3. Push the levers and remove the cover.

AIR CONDITIONING
250
21L206
 1Filter cover 2Levers
4. Push up the levers and remove the filter cover.
21L207
 1 Filter case
5. Pull the filter case toward you.
21L208
 1 Filter 2Filter case
6. Take the filter out of the filter case and replace it with a
new one.
NOTICE
When installing, the UP marks shown on the filter and
filter case should be noted and fitted as shown.
7. Install it in the reverse order of removal.

AIR CONDITIONING
251
21L209
 1Tabs 2Filter cover 3Levers
8. When installing the filter cover, insert the 3 upper tabs
and then 2 lower levers.
21L201
9. After the replacement, push and hold the “OFF” button
for the front air conditioning for more than 4 seconds to
reset the air filter clogging data. The “A/C Filter Reset”
appears on the multiinformation display and a tone
sounds to inform you that the data has been reset.
NOTICE
The filter should be installed properly in position. The
use of air conditioning with the filter removed may
cause the malfunction of the air conditioning system.