Lexus IS250C 2014 Owner's Manual

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2-3. Operating the lights and windshield wipers
IS250C/350C_U
Fog light switch
The fog lights improve visibility in difficult driving conditions, such as in rain
or fog. They can be turned on only when the headlights are on low beam.
Ty p e AFront fog lights off
Front fog lights on

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When driving
IS250C/350C_U
Ty p e BFront fog lights off
Front fog lights on

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2-3. Operating the lights and windshield wipers
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Windshield wipers and washer
■Intermittent windshield wiper with interval adjuster (if equipped)
Wiper intervals can be adjusted for intermittent operation.
Ty p e A
Off
Intermittent wind-
shield wiper operation
Low speed windshield
wiper operation
High speed wind-
shield wiper operation
Temporary operation

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When driving
IS250C/350C_U
Ty p e BOff
Intermittent wind-
shield wiper operation
Low speed windshield
wiper operation
High speed wind-
shield wiper operation
Temporary operation
Increases the intermittent
windshield wiper frequency
Decreases the intermittent
windshield wiper frequency

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2-3. Operating the lights and windshield wipers
IS250C/350C_U
Washer/wiper dual operation
Wipers operate automatically.
(After operating several times,
the wipers operate one more
time after a short delay to pre-
vent dripping.)
■Rain-sensing windshield wipers (if equipped)
When is selected, the wipers will operate automatically when
the sensor detects falling rain. The system automatically adjusts wiper
timing in according to rain volume and vehicle speed.
When is selected, the sensor sensitivity can be adjusted as fol-
lows by turning the switch ring:
Ty p e A Off
Rain-sensing wind-
shield wiper operation
Low speed windshield
wiper operation
High speed wind-
shield wiper operation
Temporary operation

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2-3. Operating the lights and windshield wipers
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When driving
IS250C/350C_U
Ty p e BOff
Rain-sensing wind-
shield wiper operation
Low speed windshield
wiper operation
High speed wind-
shield wiper operation
Temporary operation

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2-3. Operating the lights and windshield wipers
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■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 prevention
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 stationary.
(However, the mode cannot be switched when the adjustment dial for the intermit-
tent wiper interval is set to the lowest setting.)
Sensor sensitivity (high)
Sensor sensitivity (low)
Washer/wiper dual operation
Wipers operate automatically.
(After operating several times,
the wipers operate one more
time after a short delay to pre-
vent dripping.)

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2-3. Operating the lights and windshield wipers
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When driving
IS250C/350C_U
■Raindrop sensor (vehicles with the 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 194°F (90 °C) or higher, or -22 °F
(-30 °C) 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 opera-
tion
The outside rear view mirror defogger automatically turns on when you operate the
windshield wipers.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the wind-
shield washer fluid reservoir.
■Customization that can be configured at Lexus dealer
Settings (e.g. drip prevention function) can be changed.
(Customizable features →P. 5 8 6 )
CAUTION
■Caution regarding the use of windshield wipers in “AUTO” mode (vehicles with
the rain-sensing windshield wipers)
The windshield wipers may operate unexpectedly if the sensor is touched or the
windshield is subject to vibration in “AUTO” mode. Take care that your fingers or
anything else do not become caught in the windshield wipers.
●The sensor judges the amount of raindrops.

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NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■When a nozzle becomes blocked
Do not try to clear it with a pin or other object. The nozzle will be damaged.
■When there is no washer fluid spray from the nozzle
Damage to the washer fluid pump may be caused if the lever is pulled toward you
and held continually.

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2-3. Operating the lights and windshield wipers
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When driving
IS250C/350C_U
Headlight cleaner switch∗
■The headlight cleaner can be operated when
When the “ENGINE START STOP” switch is in IGNITION ON mode and the
headlight switch is turned on.
■Windshield washer linked operation
Only for the first time when the windshield washer is operated after the “ENGINE
START STOP” switch is turned to IGNITION ON mode with the headlights on, the
headlight cleaners will also operate once. ( →P. 1 8 2 )
NOTICE
■When the washer fluid tank is empty
Do not use this function when the washer fluid tank is empty. This may cause the
washer fluid pump to overheat.
Washer fluid can be sprayed on the headlights.
Press the switch to clean the
headlights.
∗: If equipped