Lexus LS500h, Manual, Page: 324 / 524

324
5-3. Using the air conditioning system and defogger
LS500h_OM_(U)_1810
■
Changing the air flow mode

P.326
■
Switching between outside air and
recirculated air modes
Press the outside/recirculated air
mode switch.
The mode changes as follows each time
the switch is pressed.
automatic mode

(outside air
mode)

(recirculated air mode)

automatic mode
When the system is switched to automatic
mode, the air conditioning system operates
automatically.
■
Defogging the windshield
Defoggers are used to defog the wind-
shield and front side windows.
Press the windshield defogger switch.
Set the outside/recirculated air mode
switch to outside air mode if the recircu-
lated air mode is used. (It may switch auto-
matically.)
To defog the windshield and the side win-
dows quickly, turn the air flow and tem-
perature up.
To return to the previous mode, press the
windshield defogger switch again when the
windshield is defogged.
■
Defogging the rear window and
outside rear view mirrors
Defoggers are used to defog the rear
window, and to remove raindrops, dew
and frost from the outside rear view
mirrors.
Press the rear window and outside rear
view mirror defoggers switch.
The defoggers will automatically turn off
after a while. The operation time changes
according to the ambient temperature and
vehicle speed.
■
Windshield wiper de-icer (if
equipped)

P.329
■ When the outside temperature exceeds
75°F (24°C) and the air conditioning
system is on
● In order to reduce the air conditioning
power consumption, the air conditioning
system may switch to recirculated air
mode automatically. This may also
reduce fuel consumption.
● It is possible to switch to outside air mode
at any time by pressing the outside/recir-
culated air mode switch.
■
Fogging up of the windows
The windows will easily fog up when the
humidity in the vehicle is high. Turning
“A/C” on will dehumidify the air from the
outlets and defog the windshield effectively.
●
If you turn “A/C” off, the windows may
fog up more easily.
●
The windows may fog up if the recircu-
lated air mode is used.
■ Outside/recirculated air mode
● When driving on dusty roads such as tun-
nels or in heavy traffic, set the out-
side/recirculated air mode switch to the
recirculated air mode. This is effective in
preventing outside air from entering the
vehicle interior. During cooling opera-
tion, setting the recirculated air mode will
also cool the vehicle interior effectively.
● Outside/recirculated air mode may auto-
matically switch depending on the tem-
perature setting or the inside
temperature.
■
Registering air conditioning settings to
electronic keys
●
Unlocking the vehicle using an electronic
key and turning the power switch to ON
mode will recall that key’s registered air
conditioning settings.