Lexus GS430 2006 Scheduled Maintenance Guide / LEXUS 2006 GS430/GS300 FROM JAN. 2006 PROD. OWNER'S MANUAL (OM30786U)

SECTION 2 – 1
257
AIR CONDITIONING AND AUDIO
Air conditioning
Automatic air conditioning controls259
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AIR CONDITIONING
258
AUTOMATIC AIR CONDITIONING CONTROLS
G21001
 AVehicles with Navigation system BVehicles without Navigation system

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
260Vehicles with navigation system only:
G21047a
By pushing the button above, you can operate the speech
command system.
For the operation of the speech command system, see the
“Navigation System Owner’s Manual”.

AIR CONDITIONING
261
G21002a
Air flow selectionAutomatic air flow mode only

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
263

The “Floor/Windshield” air flow mode may be applied
automatically, if the outside temperature is lowered
down to below 0C (32F).
This is not a malfunct ion. The “Floor/Windshield” air
flow mode turns on the defogging and defrosting
function with the purpose of clearing your front view
for safe driving.
If the “Floor” air flow mode is desired with the main
purpose of heating, “Floor” air flow mode can be
selected manually by touching the air flow control
switch.
G21004
2. Use the “TEMP” or ”PASSENGER TEMP” buttons to set
the desired vehicle interior temperature.
The “TEMP” or “PASSENGER TEMP” (“
”, “”) buttons are
used to set the desired interior temperature. The interior
temperature will be controlled on the driver and passenger side
simultaneously or individually.
To increase the interior temperature, push the “
” button, to
decrease it, push the “” button.
If quick heating or cooling is desired—
“LO” appears when you hold “
” until maximum cooling, and
“HI” appears when you hold “” until maximum heating.
“TEMP” buttons—Changes the temperature on the driver
and passenger sides simultaneously or the driver side only.
“PASSENGER TEMP” buttons—Changes the temperature
settings separate from the driver side.

AIR CONDITIONING
264“DUAL” switch—
This switch is used to set the temperatures independently for
the driver’s seat and front passenger seat.
Touching the switch changes from the independent mode to
the linked mode.

Independent mode: Temperatures can be set
independently for the driver’s seat and front passenger’s
seat. The indicator light will come on to show that the
independent mode has been selected.
 Linked mode: The same temperature is set for the driver’s
seat and front passenger’s seat. The indicator light will turn
off to show that the simultaneous temperature setting mode
has been selected.
When the temperature for the front passenger’s seat is
changed in linked mode, the mode is changed automatically to
independent mode.
INFORMATION
Knowledge for the twotemperature selector operation
This air conditioning system has two independent
temperature selectors: left and right (for the use of
driver and front passenger respectively).
 There are cases where the temperature of the air flow
may not accurately correlate on the driver and front
passenger side according to circumstances, even if
the left and right temperature selectors are set at the
same temperature. If this situation occurs, use the
fine tune operation to adjust the air temperature on
one side.
 There are cases where one or both of the air flow
temperatures may not accurately correlate with the
set temperature according to circumstances, when
the air flow temperature settings on the left and right
are substantially different. For example, if the left
controller is set at central or neutral temperature
while the right one is set at maximum heating or
maximum cooling, or vice versa. If this situation
occurs, use the fine tune operation to adjust the air
temperature on each side.

AIR CONDITIONING
265
G21005a
Driver side setting
Passenger side setting
Mixed settingSETTING OPERATION—manual control
When one of the manual control switches is depressed
while operating in automatic mode, the mode relevant to
the depressed switch is set. Other conditions continue to
be adjusted automatically.
If manual air flow selection is desired—
G21006
The outlets from which air is delivered can be selected
manually by touching the switch. 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 the floor vents, the instrument
panel vents and rear vents.
When you set the temperature selector setting at about
the middle in automatic operation, warm air flows out of
the floor vents and relatively low−temperature air flows
out of the instrument panel vents and rear vents.

AIR CONDITIONING
266
3Floor— Air flows mainly from the floor vents and rear
vents.
4 Floor/Windshield— Air flows mainly from the floor vents,
windshield vents and rear vents.
Take in the fresh air by selecting the OUTSIDE AIR mode with
the air intake control button.
If manual fan speed control is desired—
G21007
 1 Fan speed at low 2Fan speed at high
The fan speed can be set to your desired speed by touching
the appropriate air flow control switch. The higher the fan
speed is, the more air is delivered. Pushing the ”OFF” button
turns off the fan.
To remove exterior windshield frost and interior windshield fog,
use the high speed setting. If manual switching of air intake is desired—
G21008
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 AIR 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 AIR mode (with indicators 1
and 2 on).
3 OUTSIDE AIR mode—The system will take fresh outside
air into the vehicle.