2013 Lexus GS 450h Owners Manual - Page 350

GS450h_U (OM30D01U)

5-2. Using the air conditioning system and defogger

■

Using automatic mode

Fan speed is adjusted automatically according to the temperature setting and the

ambient conditions.

Therefore, the fan may stop for a while until warm or cool air is ready to flow immedi-

ately after

is pressed.

■

Humidity sensor

■

Fogging up of the windows

●

The windows will easily fog up when the humidity in the vehicle is high. Selecting

on will dehumidify the air from the outlets and defog the windshield effec-

tively.

●

If you turn

off, the windows may fog up more easily.

●

The windows may fog up if the recirculated air mode is used.

■

Outside/recirculated air mode

●

When driving on dusty roads such as tunnels or in heavy traffic, set the outside/

recirculated air mode button to the recirculated air mode. This is effective in pre-

venting outside air from entering the vehicle interior. During cooling operation, set-

ting the recirculated air mode will also cool the vehicle interior effectively.

●

Outside/recirculated air mode may automatically switch depending on the tem-

perature setting or the inside temperature.

A sensor, which detects humidity inside the

vehicle and the temperature of the wind-

shield, is provided to detect fog on the front

windscreen. Due to the sensor, when auto-

matic mode is set the air conditioning may

make the following controls:

●

Changing the amount of air flow

●

Changing the amount of air introduced from

outside when in outside air mode with the air

vents in the

position

●

Changing the settings of the air vents to

when the

is set