Page 187 of 600
1874-3. Operating the lights and wipers
4
Driving
IS350/300/200t_U (OM53D18U)
Operate the lever as follows to operate the wipers. The lever will return to its
original position after operation.
Intermittent windshield wipers with interval adjuster (U.S.A.) or (Canada)
Up 2 levels
Up 1 level
(U.S.A.) or (Canada) Down 1 level
(U.S.A.) or (Canada)
Down 2 levels
Windshield wipers and washer
Operating the wiper lever
1
2
3
4
or or or
OffTe m p o r a r y operationTe m p o r a r yoperationIntermittent operationHigh speedoperation
Intermittent
operationOffOffLow speedoperationHigh speed operation
Low speed operationOffIntermittent operationHigh speedoperationHigh speed operation
High speed operationOffLow speedoperationNo changeNo change
Status
before
operation
Operation
Page 188 of 600
1884-3. Operating the lights and wipers
IS350/300/200t_U (OM53D18U)
Wiper intervals can be adjusted when intermittent operation is selected. Increases the intermittent windshield
wiper frequency
Decreases the intermittent wind-
shield wiper frequency
The intermittent wind shield wiper oper-
ates more frequently as vehicle speed
becomes higher.
Washer/wiper dual operation
The wipers will automatically operate a
couple of times after the washer squirts.
Vehicles with headlight cleaners: When
the engine switch is in IGNITION ON
mode and the headlights are on, if the
lever is pulled, the headlight cleaners
will operate once. After this, the head-
light cleaners will operate every 5th
time the lever is pulled.
5
6
7
Page 189 of 600

1894-3. Operating the lights and wipers
4
Driving
IS350/300/200t_U (OM53D18U)
Rain-sensing windshield wipers (U.S.A.) or (Canada)
Up 2 levels
Up 1 level
(U.S.A.) or (Canada) Down 1 level
(U.S.A.) or (Canada)
Down 2 levels
AUTO mode on/off switch
With AUTO mode selected, the wipers will operate automatically when the sensor
detects falling rain. The system automatically adjusts wiper timing in accordance with
rain volume and vehicle speed.
The AUTO mode indicator will turn on when AUTO mode is selected.
*: After temporary operation, the mode will return to AUTO mode.
AUTO mode
indicator
1
2
3
4
5
or or
or
OffTe m p o r a r y operationTe m p o r a r y operationLow speed operationHigh speed operation
Low speed operationOffOffHigh speed operationHigh speedoperation
High speed operationOffLow speedoperationNo changeNo change
AUTO
modeIntermittent operation
Off
Te m p o r a r yoperation*Low speed operationHigh speed operation
ContinuouslyNo change
Operation
Status
before
operation
Page 190 of 600

1904-3. Operating the lights and wipers
IS350/300/200t_U (OM53D18U)
When AUTO mode is selected, the sensor sensitivity can be adjusted by turning
the switch ring.
Increases the sensitivity
Decreases the sensitivity
Washer/wiper dual operation
The wipers will automatically operate a
couple of times after the washer squirts.
Vehicles with headlight cleaners: When
the engine switch is in IGNITION ON
mode and the headlights are on, if the
lever is pulled, the headlight cleaners
will operate once. After this, the head-
light cleaners will operate every 5th
time the lever is pulled.
The wipers can be used as intermittent windshield wipers, which operate regard-
less of vehicle speed or amount of rain drops. The intermittent windshield wiper
operation can be switched when the vehicl e is stopped and the wiper is off. The
wiper operation cannot be switched during AUTO mode or while the intermit-
tent windshield wipers are operating.
Press and hold until the AUTO
mode indicator stops flashing.
If is pressed and held until the
AUTO mode indicator stops flashing
again, it will return to its previous state.
The wiper can be switched when the
vehicle is stopped and the wipers are off.
6
7
8
Switching between the intermittent wi ndshield wipers and rain-sensing
windshield wipers (vehicles with rain-sensing windshield wipers)
Page 191 of 600
1914-3. Operating the lights and wipers
4
Driving
IS350/300/200t_U (OM53D18U)
■Operation of the intermittent windshield wipers with interval adjuster
(U.S.A.) or (Can-
ada)
Move the lever up by 2 levels
Move the lever up by 1 level
(U.S.A.) or (Canada)
Move the lever down by 1 level
(U.S.A.) or (Can-
ada)
Move the lever down by 2 levels
1
2
3
4
or or or
OffTe m p o r a r y operationTe m p o r a r yoperationIntermittent operationHigh speedoperation
Intermittent
operationOffOffLow speedoperationHigh speed operation
Low speed operationOffIntermittent operationHigh speedoperationHigh speed operation
High speed operationOffLow speedoperationNo changeNo change
Status
before
operation
Operation
Page 192 of 600

1924-3. Operating the lights and wipers
IS350/300/200t_U (OM53D18U)
Wiper intervals can be adjusted when intermittent operation is selected. Increases the intermittent wind-
shield wiper frequency
Decreases the intermittent wind-
shield wiper frequency
The intermittent windshield wiper
operates more frequently as vehicle
speed becomes higher.
Washer/wiper dual operation
The wipers will automatically operate
a couple of times after the washer
squirts.
Vehicles with headlight cleaners:
When the engine switch is in IGNI-
TION ON mode and the headlights
are on, if the lever is pulled, the head-
light cleaners will operate once.
After this, the headlight cleaners will
operate every 5th time the lever is
pulled.
■The windshield wiper and washer can be operated when
The engine switch is in IGNITION ON mode.
■Dripping prevention wiper sweep
After performing a washing and wiping operation several times, the wipers operate one
more time after a short delay to prevent dripping.
However, this final wiper operation will not be performed while driving.
■Effects of vehicle speed on wiper operation (vehicles with rain-sensing windshield wip-
ers)
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)
With low speed windshield wiper operation selected, wiper operation will be switched
from low speed to intermittent wiper operat ion only when the vehicle is stationary.
5
6
7
Page 193 of 600

1934-3. Operating the lights and wipers
4
Driving
IS350/300/200t_U (OM53D18U)
■Raindrop sensor (vehicles with rain-sensing windshield wipers)
●If the wiper is turned to AUTO mode while the engine switch is in IGNITION ON
mode, the wipers will operate once to show that AUTO mode is activated.
●If the temperature of the raindrop sensor is 185°F (85°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 mode.
■When the windshield wipers are in tempor ary operation (vehicles with rain-sensing
windshield wipers)
AUTO mode cannot be activated even if is pressed.
■If no windshield washer fluid sprays
Check that the washer nozzles are not blocked if there is washer fluid in the windshield
washer fluid reservoir.
●The raindrop sensor judges the amount of
raindrops.
An optical sensor is ad opted. It may not oper-
ate properly when sunlight from the rising or
setting of the sun intermittently strikes the
windshield, or if bugs etc. are present on the
windshield.
CAUTION
■Caution regarding the use of windshield wipers in AUTO mode
The windshield wipers may operate unexpectedly if the sensor is touched or the wind-
shield is subject to vibration in AUTO mode. Take care that your fingers or anything
else do not become caught in the windshield wipers.
■Caution regarding the use of washer fluid
When it is cold, do not use the washer fluid until the windshield becomes warm. The
fluid may freeze on the windshield and cause lo w visibility. This may lead to an accident,
resulting in death or serious injury.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may damage the windshield.
■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.
■When a nozzle becomes blocked
In this case, contact your Lexus dealer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.
Page 220 of 600

2204-5. Using the driving support systems
IS350/300/200t_U (OM53D18U)
■Temporary cancelation of the LDA system functions
If any of the following occurs, the LDA system functions will be temporarily canceled. The
functions will resume after the necessar y operating conditions have returned.
●The turn signal lever is operated.
●The vehicle speed deviates from the operating range of the LDA system functions.
●When the lane lines cannot be recognized while driving.
●When the lane departure warning sounds.
The lane departure warning function will no t operate again for a several seconds after it
has been activated, even if the vehicle leaves the lane again.
■The lane departure warning
Depending on the audio system sound level or air conditioning fan noise while the audio
system or air conditioning system is in use, it may be difficult to hear the warning sound.
■After the vehicle has been parked in the sun
The LDA system may not be available and a warning message ( P. 486) will be dis-
played for a while after driving has started. When the temperature in the cabin decreases
and the temperature around the camera sensor ( P. 202) becomes suitable for its
operation, the functions will begin to operate.
■If there are lane markers on only one side of the vehicle
The lane departure warning will not operate fo r the side on which lane markers could not
be recognized.
■Conditions in which the functi on may not operate correctly
In the following situations, the camera sensor may be unable to recognize lane markers
causing the lane departure warn ing function to operate incorrectly. However, this does
not indicate a malfunction.
●When driving through an area with no lane markers, such as a tollbooth, a crossing or
before a ticket checkpoint
●When driving on a sharp curve
●When lane markers are extremely narrow or extremely wide
●When the vehicle leans to one side an unus ual amount due to a heavy load or improper
tire inflation pressure
●When the following distance between your vehicle and the vehicle ahead is extremely
short
●When the lane markers are yellow (These may be more difficult for the system to rec-
ognize compared to white markers.)
●When the lane markers are broken, Botts’ dots (raised pavement markers) or stones
●When the lane markers are on a curb etc.
●When lane markers are obscured or partially obscured by sand, dirt, etc.
●When there are shadows on the road running parallel with lane markers, or if a shadow
covers the lane markers
●When driving on a particularly brig ht road surface, such as concrete
●When driving on a road surface that is bright due to reflected light
●When driving in a location where the light level changes rapi dly, such as the entrance to
or exit from a tunnel
●When sunlight or the headlights of oncoming vehicles are shining directly into the cam-
era lens