lexus LS400 1999 Comfort Adjustment / LEXUS 1999 LS400 OWNER'S MANUAL (OM50514U)

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AUTOMATIC AIR CONDITIONING CONTROLS
21L001a

The automatic air conditioning automatically
maintains the set temperature.
This air conditioning features automatic fan speed
and air flow control which automatically selects the
most suitable fan speed and air flow to control the
temperature. The ignition key must be in the ºONº
position.NOTICE
To prevent the battery from being discharged, do not leave the air conditioning on longer thannecessary when the engine is not running.

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1Driver side temperature control button
2Front windshield button
3Driver side temperature display (in degreesFahrenheit or Centigrade)
4Fan speed display
5Air intake control button
6Air flow display
7Air conditioning on±off button
8Passenger side temperature control button
9Passenger side temperature display (indegrees Fahrenheit or Centigrade)
10Separate/dual control button
11Air flow control button
12Fan speed control button
13OFF button
14Automatic control button

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21L002-6

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Air flow selection

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(a) Climate control
SETTING OPERATION ± automatic control
21L003-3
1. Push the ºAUTOº 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. The operation status is shown
by each indicator.
When one of the manual control buttons is depressed
while operating in automatic mode, the operation
corresponding to the button depressed is set. Other
conditions continue to be adjusted automatically.
Push the ºOFFº button to turn the air conditioning off.

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21L040±1

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2. Use the ºTEMPº or ºPASSENGER TEMPº button
to set the desired temperature.
The ºTEMPº or ºPASSENGER TEMPº button is used to
set the desired temperature. The temperature will be
controlled on the driver and passenger sides
simultaneously or individually.
ºTEMPº button ± Changes the temperature on the
driver
and passenger sides simultaneously or the driver
side only.
ºPASSENGER TEMPº button ± Changes the
temperature on the passenger side only.
ºDUALº button ± Changes the mode of the
temperature setting.
The indicator on the ºDUALº button has two modes:
 With the indicator on ± For individual temperature
setting
 With the indicator off ± For simultaneous
temperature setting

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21L005-2
Driver side setting
Passenger side setting
Mixed settingSETTING OPERATION ± manual control
If manual air flow selection is desired ±

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21L006-3
The outlets from which air is delivered can be selected
manually by pushing the button. The function of each
mode is as follows:
1Panel ± Air flows mainly from the instrument panel
vents.
2 Bi±level ± Air flows from both the floor vents and
the instrument panel vents.
3 Floor ± Air flows mainly from the floor vents.
4Floor/Windshield ± Air flows mainly from the floor
vents and windshield vents. If quick heating or cooling is desired ±
Push the ºTEMPº or ºPASSENGER TEMPº button on
either
side and hold it until ºMAX. HOTº or ºMAX. COLDº
appears on the display.
If manual fan speed control is desired ±

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21L007-3

1Fan 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 ºOFFº button turns off the fan.
To remove exterior windshield frost, use the high speed
setting. If manual switching of air intake is desired ±