lexus LS400 2000 Engine / LEXUS 2000 LS400 OWNER'S MANUAL (OM50533U)

AIR CONDITIONING
224
21L002-6

AIR CONDITIONING
225


Air flow selection

AIR CONDITIONING
226
(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 mode relevant to
the depressed button is set. Other conditions continue
to be adjusted automatically.
Push the ºOFFº button to turn the air conditioning off.

AIR CONDITIONING
227
21L040±1

AIR CONDITIONING
2282. 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

AIR CONDITIONING
229
21L005-2
Driver side setting
Passenger side setting
Mixed setting

AIR CONDITIONING
230SETTING OPERATION ± manual control
When one of the manual control buttons is
depressed while operating in automatic mode, the
mode rel
evant to the depressed button is set. Other
conditions continue to be adjusted automatically.
If manual air flow selection is desired ±
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:
1 Panel ± 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 ±

AIR CONDITIONING
231
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 ±

AIR CONDITIONING
232
21L008-4
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.
1RECIRCULATED mode ± If quick circulation of
cooled air is desired, select this mode.
2EXHAUST 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).
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
ªAUTOº 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 and OUTSIDE AIR in
the AUTOMATIC mode, push the air intake control
button until you hear a beep. The display changes
as illustrated below.
The sensitivity of the sensor can be adjusted only while
the vehicle has stopped.

AIR CONDITIONING
233
21L044
When you push either side of the ºTEMPº button several
times, the sensitivity changes from º+3º down to º±3º. If
you do not operate any button for a few seconds, the
previous display returns.
If manual on±off of the air conditioning is desired ±
Push the ºA/Cº 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 ( 3 2 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 AUTOMATIC 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 ºA/Cº button will blink. If the indicator of
the ºA/Cº button blinks even when the ºA/Cº button is
pushed again, have the compressor checked by your
nearest Lexus dealer.