Lexus IS220d 2012 Manual page 207


The windshield wipers and washer can be operated when
The "ENGINE START STOP" switch is in IGNITION ON mode.

Effects of vehicle speed on wiper operation
Vehicle speed affects the following even when the wipers are not in
"AUTO" mode.

Intermittent wiper interval

Wiper operation when the washer is being used (delay until drip preven-
tion wiper sweep occurs)
Low speed wiper operation selected, wiper operation will be switched from
low speed to intermittent wiper operation only when the vehicle is station-
ary.
(However, the mode cannot be switched when the adjustment dial for the
intermittent wiper interval is set to the lowest setting.)

Raindrop sensor (vehicles with rain-sensing windshield wipers)

If the wiper switch is turned to "AUTO" position while the "ENGINE
START STOP" switch is in IGNITION ON mode, the wiper will operate
once to show that auto mode is activated.

If the temperature of the raindrop sensor is 90C (194F) or higher, or -
30C (-22F) or lower, automatic operation may not occur. In this case,
operate the wipers in any mode other than "AUTO".

Outside rear view mirror defogger activation linked to windshield wiper
operation
The outside rear view mirror defogger automatically turns on when you
operate the windshield wipers.
IS250/220d/200d_EE
2-3. Operating the lights and windshield wipers

The sensor judges the amount of rain-
drops.
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