2005 LEXUS LS430 Owners Manual

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.

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.