2006 Lexus GS430 ECO mode

TOUCH SCREEN
221
Initial screen
G18001
When you select the engine switch in “ACC” or “IG −ON” mode,
the initial screen appears and the system begins operating.
After a few seconds, the initial screen disappears.
CAUTION
When the vehicle is stopped with the engine running,
always apply the parking brake for safety.
Touch switch operation
This system is operated mainly by the switches on the screen.
To prevent damage to the screen, lightly touch switches on the
screen with your finger. When you touch a switch on the
screen, a beep sounds.
Do not use objects other than your finger to touch the screen.
INFORMATION
 If the system does not respond to a touch of a switch,
move your finger away from the screen and then
touch it again.
 You cannot operate dimmed switches.
 Wipe off fingerprints on the surface of the display
using a glass cleaning cloth.
 The displayed image may become darker and moving
images may be slightly distorted when the display is
cold.
 When you look at the screen through polarized
material such as polarized sunglasses, the screen
may be dark and hard to see. If so, change the angle
of the screen or take off your sunglasses.

TOUCH SCREEN
233

To reconnect the Bluetooth phone
If the Bluetooth phone is disconnected with a poor
reception from the Bluetooth network when the engine
switch is selected in “ACC” or “IGON” mode, the system
automatically reconnects the Bluetooth phone. In this
case, the connection result is not displayed.
If the Bluetooth is disconnected on purpose such as you turned
your cellular phone off, this does not happen. Reconnect it by
the following methods.
 Select the Bluetooth phone again.
 Enter the Bluetooth phone. 
To confirm the Bluetooth information
You can confirm or change the detailed setting of the
Bluetooth phone.
G18009
Touch the “Settings” switch of Bluetooth to display
“Bluetooth Information” screen.

AIR CONDITIONING
259
1 Driver side temperature display (in degrees
Fahrenheit or Centigrade)
2 Passenger side temperature display (in degrees
Fahrenheit or Centigrade)
3 “DUAL” (temperature setting mode change) switch
4 “A/C” switch
5 Air flow control switches
6 Fan speed control switches
7 Air conditioning operation screen display button
8 “TEMP” (driver side temperature control) buttons
(At the independent mode that display shows
“DUAL”; mainly for driver and secondarily for front
passenger)
(At the linked mode that display does not show
“DUAL”; for driver)
9 “OFF” button
10 “AUTO” button
11 Micro dust and pollen filter button
12 Windshield air flow button
13 Air intake control button
14 “PASSENGER TEMP” (passenger side temperature
control) buttons
(Only for the independent mode that display shows
“DUAL”; mainly for front passenger and
secondarily for driver)
The automatic air conditioning automatically maintains
the set temperature.
In the automatic operation mode, the air conditioning selects
the most suitable fan speed, air flow, air intake and on −off of
the air conditioning according to the temperature.
The engine switch must be selected in “IG −ON” mode.
“CLIMATE”: Push this button to display switches for
automatic air conditioning control.
NOTICE
To prevent the battery from being discharged, do not
leave the air conditioning on longer than necessary
when the engine is not running.

AIR CONDITIONING
262
(a) Climate control
SETTING OPERATION automatic control
G21003
1. Push the “AUTO” button.
An indicator light will illuminate to show that the automatic
operation mode has been selected.
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. 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 to turn the air conditioning off.
INFORMATION
 This automatic control had additional functions as
described below, when the “AUTO” button is pushed.
The fan is stopped for a little while until warm air
preparation, when outside temperature is low like a
winter season in the “Floor”, “Bilevel” or
“Floor/Windshield” air flow mode. If quick removal
for exterior frost, fog and inside fog on the windshield
is desired, use the high fan speed setting after the
“Windshield” air flow mode has been selected.
The fan is stopped few seconds until cool air
preparation, when outside temperature is high like a
summer season in the “Panel” or “Bilevel” air flow
mode.
 The internal circulation may be applied for maximum
cooling in the automatic operation mode, when
outside temperature is high like a summer season.
If fresh outside air is desired into the vehicle, push
the air intake control button to select the OUTSIDE
AIR mode.

AIR CONDITIONING
267
To prevent fogging up of the windshield, the air intake mode
may change automatically to the OUTSIDE AIR mode
depending on the condition of the air conditioning system.
For example, when the ambient temperature is low, the air
intake mode may change automatically to the OUTSIDE AIR
mode. This is not a malfunction.
When the air conditioning is on, if the engine coolant
temperature becomes extremely high, the RECIRCULATED
AIR mode is automatically selected. This is not a malfunction.
When
the engine coolant temperature is lowered, the previous
mode resumes.
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 RECIRCULATED AIR and OUTSIDE AIR in the
AUTOMATIC mode, push the air intake control button and
hold it for a few seconds. The display changes to the one
illustrated below.
The sensitivity of the sensor can be adjusted only while the
vehicle has been stopped.
G21023
The sensitivity of the switches is set to be higher toward “HI”
and lower toward “LO”.
Touch the desired switch on the screen.
When
you push any button except the air intake control button,
the above screen goes off.

AIR CONDITIONING
268If manual onoff of the air conditioning is desired—
Touch
the ”A/C” switch to turn the air conditioning on and touch
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 switch 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” switch will blink. If the indicator of the
”A/C” switch blinks even when the ”A/C” switch is touched
again, have the compressor checked by your nearest Lexus
dealer.
(b) Windshield defogging and defrosting
G21010
To remove interior fog on the windshield—
Push the windshield air flow button.
To remove frost or exterior fog on the windshield—
1. Push the “TEMP” (”
”) button to set the “HI”.
2. Push the windshield air flow button.
3. Touch fan speed control switch on the right side to obtain a
maximum air flow.
4. Leave the “A/C” switch off.

AIR CONDITIONING
270However, when the outside temperature is low, the indicator
light
comes on and the “A/C” switch turns on, but the air intake
control remains the same. When the interior is purified
sufficiently with fresh air after about 1 minute, this mode will be
turned off automatically and the indicator light will go out, but
the “A/C” switch remains on.
When the micro dust and pollen filter is activated, this mode will
be turned off by pushing any of the following buttons:
 Micro dust and pollen filter button
 “A/C” button
 Windshield air flow button
The indicator light will go out when the mode is turned off.
INFORMATION
 Use and push the windshield air flow button to
remove the fog on the windshield in rainy days.
 Fresh air is delivered even when the micro dust and
pollen filter button is turned off.
(d) Operating tips
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.
 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 and rear vents. (See (e) “Center vents, side vents and
rear vents”.)
 Only humid days, do not blow cold air on the windshield.
The windshield could fog up because of the difference in air
temperature on the inside and outside of the windshield.
 Keep the area under the front seats clear to allow air to
circulate throughout the vehicle.
 On cold days, set the fan speed to high for a minute to help
clear the intake ducts of snow or moisture. This can reduce
the amount of fogging on 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 set to the OUTSIDE AIR mode to take in
the fresh air and the fan speed selector to any setting except
OFF.

AIR CONDITIONING
271

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.
Heating
For best results, set controls to:
For automatic operation—
Push in the “AUTO” button.
Temperature—To the desired temperature
Air intake—OUTSIDE AIR
Air conditioning—OFF
For manual operation—Fan speed—To the desired fan speed
Temperature—Towards high temperature
Air intake—OUTSIDE AIR
Air flow—FLOOR
Air conditioning—OFF
 For quick heating, select RECIRCULATED AIR mode for a
few minutes. To keep the windows from fogging, select
OUTSIDE AIR mode after the vehicle interior has been
warmed.
 Touch the “A/C” switch on for dehumidified heating.
 Choose floor/windshield air flow to heat the vehicle interior
while defrosting or defogging the windshield.
Air conditioning
For best results, set controls to:
For automatic operation—
Push in the “AUTO” button.
Temperature—To the desired temperature
Air intake—OUTSIDE AIR
Air conditioning—ON