Lexus LS460 Owners Book page 368

3-2. Using the air conditioning system and defogger
STEP 2
The windshield wiper de-icer can be operated when
■
The "ENGINE START STOP" switch is in IGNITION ON mode.
CAUTION
When the windshield wiper de-icer is on
■
Do not touch the glass at the lower part of the windshield or to the side of the front
pillars as the surfaces can become very hot and burn you.
366
Touch to turn on the
windshield wiper de-icer. The
windshield wiper de-icer will
automatically turn off after
approximately
Touching the switch again also
turns the de-icer off.
15 minutes.