Lexus IS350 AWD Owner's Manual page 427

Seat heaters
Each time the switch is pressed, the
intensity of the seat heater changes and
the level indicator lights (amber) light
as follows:
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off
The seat heaters can be used when
■
The engine switch is in IGNITION ON mode.
Seat heater timer control
■
To enable seat heater timer control, press and hold the driver and front passenger seat
heater switches at the same time until a buzzer sounds once. If a seat heater is turned on
while seat heater timer control is enabled, the intensity of the seat heater will automati-
cally change from HiMidLo.
The timing of the change in seat heater intensity differs depending on the temperature
inside the cabin, etc. when the seat heater is operating.
To disable seat heater timer control, press and hold the driver and front passenger seat
heater switches at the same time until a buzzer sounds twice.
Seat ventilators
Each time the switch is pressed, the
intensity of the seat ventilator changes
and the level indicator lights (green)
light as follows:
Hi (3 segments lit)  Mid (2 segments
lit)  Lo (1 segment lit)  Off
The seat ventilators can be used when
■
The engine switch is in IGNITION ON mode.
Seat ventilator
■
The seat ventilators provide ventilation only, and do not have a heating/cooling function.
IS350 AWD/IS350/IS300 AWD/IS300_U
6-2. Using the air conditioning system
Type A
427
Type B
6