Lexus 2003 LS Owner's Manual page 634

Automatic Air Conditioning Controls Automatic Air Conditioning Controls
If manual on–off of the air conditioning is
desired –
Push the "A/C" switch to turn the air condi-
tioning on and push it again to turn the air
conditioning off. If you turn off the air condi-
tioning manually, the EXHAUST GAS AUTO-
MATIC 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 indica-
tor on the A/C switch is off and the EXHAUST
GAS AUTOMATIC indicator light remains on.
However, the EXHAUST GAS AUTOMATIC
mode does not operate. When the air condi-
tioning turns on as with the raised tempera-
ture, 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 condition-
ing off once it is no longer required. This will
improve fuel economy. The air conditioning
can be used for year–round automatic tem-
perature control including cooling and dehu-
midifying operation.
(b) Windshield defogging and
defrosting
To remove interior fog on the windshield–
Push the "FRONT WINDSHIELD" button.
To remove frost or exterior fog on the
windshield –
1. Push the upper side of the temperature
control button until maximum figure appears
on the temperature display.
2. Push the "FRONT WINDSHIELD" but-
ton.
3. Push the "HI" of the fan speed control
switch to obtain a maximum air flow.
For further information for removing frost and
fog, see "Lower vent" on page 124.
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" but-
ton once again while in the FRONT WIND-
SHIELD 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 differ-
ence 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 vi-
sion.
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