Windshield wipers Lexus IS250 2015 Maintenance data (fuel, oil level, etc.) / LEXUS 2015 IS250/350 OWNERS MANUAL (OM53C50U)

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IS350/250_U (OM53C50U)
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4-1. Before driving Driving the vehicle ......................146
Cargo and luggage.....................153
Vehicle load limits ........................156
Trailer towing ................................. 157
Dinghy towing .............................. 158
4-2. Driving procedures Engine (ign ition) switch .............159
Automatic transmission ............164
Turn signal lever ............................ 170
Parking brake ................................ 172
4-3. Operating the lights and wipers
Headlight switch .......................... 173
Automatic High Beam............... 176
Fog light switch .............................. 181
Windshield wipers and washer .......................................... 182
4-4. Refueling Opening the fuel tank cap ...... 188 4-5. Using the driving
support systems
Cruise control ...............................192
Dynamic radar cruise control ...........................................196
LDA (Lane Departure Alert)........208
Intuitive parking assist ................ 214
Lexus parking assist monitor.......................................... 221
Driving mode select switch ............................................237
Driving assist systems .............. 240
PCS (Pre-Collision System) ..........246
BSM (Blind Spot Monitor) ............. 252
• The Blind Spot Monitor function .................................... 255
• The Rear Cross Traffic Alert function .........................257
4-6. Driving tips Winter driving tips ..................... 260
4Driving

15Pictorial index
IS350/250_U (OM53C50U)
Windshield wipers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 182
Precautions against winter season . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 260
To prevent freezing (windshield wiper de-icer)
* . . . . . . . . . . . . . . . . . . . . . . . . P. 362
Precautions against car wash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 397
Fuel filler door . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 1 8 8
Refueling method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 188
Fuel type/fuel tank capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 514
Tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 423
Tire size/inflation pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 519
Winter tires/tire chain. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .P. 260
Checking/rotation/tire pressure warning system . . . . . . . . . . . . . . . . . . . . . . . .P. 423
Coping with flat tires . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 486
Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 411
Opening. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 411
Engine oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 514
Coping with overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 506
Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 4 74
Headlights/parking lights/daytime running lights . . . . . . . . . . . . . . . . . . . P. 173
Fog lights
* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 181
Turn signal lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P . 170
Tail lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 173
Stop lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 146
License plate lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 17 3
Back-up lights
Shifting the shift lever to R . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 16 4
Side marker lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 173
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Light bulbs of the exterior lights for driving(Replacing method: P. 444, Watts: P. 521)
*: If equipped
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145
Driving4
IS350/250_U (OM53C50U)
4-1. Before drivingDriving the vehicle ...................... 146
Cargo and luggage .................... 153
Vehicle load limits ....................... 156
Trailer towing ................................. 157
Dinghy towing...............................158
4-2. Driving procedures Engine (ignition) switch ............ 159
Automatic transmission ............ 164
Turn signal lever ........................... 170
Parking brake .................................172
4-3. Operating the lights and wipers
Headlight switch ...........................173
Automatic High Beam ............... 176
Fog light switch.............................. 181
Windshield wipers and washer........................................... 182
4-4. Refueling Opening the fuel tank cap.......188 4-5. Using the driving support
systems
Cruise control .............................. 192
Dynamic radar cruise control .......................................... 196
LDA (Lane Departure Alert) ........208
Intuitive parking assist ................214
Lexus parking assist monitor ..........................................221
Driving mode select switch ........................................... 237
Driving assist systems............... 240
PCS (Pre-Collision System).......... 246
BSM (Blind Spot Monitor) ..... 252
• The Blind Spot Monitor function .................................... 255
• The Rear Cross Traffic Alert function......................... 257
4-6. Driving tips Winter driving tips ..................... 260

1744-3. Operating the lights and wipers
IS350/250_U (OM53C50U)
With the headlights on, push the
lever away from you to turn on the
high beams.
Pull the lever toward you to the center
position to turn the high beams off.
Pull the lever toward you and release
it to flash the high beams once.
You can flash the high beams with the
headlights on or off.
■Daytime running light system
●To make your vehicle more visible to other drivers, the parking lights turn on automati-
cally (at an increased intensity) whenever th e engine is started and the parking brake is
released. Daytime running lights ar e not designed for use at night.
●Compared to turning on the headlights, the daytime running light system offers greater
durability and consumes less electricity, so it can help improve fuel economy.
■Headlight control sensor
■Automatic light off system
When the light switch is in , or : The headlights and tail lights turn off 30
seconds after the engine switch is turned to ACCESSORY mode or turned off and a
door is opened and all of the doors and trunk are closed. (The lights turn off immediately
if on the key is pressed twice after all the doors are closed.)
To turn the lights on again, turn the engine switch to IGNITION ON mode, or turn the
light switch off once and then back to or .
If any of the doors or trunk lid is left open, the lights automatically turn off after 20 min-
utes.
■Automatic headlight leveling system
The level of the headlights is automatically ad justed according to the number of passen-
gers and the loading condition of the vehicle to ensure that the headlights do not inter-
fere with other road users.
Turning on the high beam headlights
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The sensor may not function properly if an
object is placed on the sensor, or anything that
blocks the sensor is affixed to the windshield.
Doing so interferes with the sensor detecting
the level of ambient light and may cause the
automatic headlight system to malfunction.

1754-3. Operating the lights and wipers
4
Driving
IS350/250_U (OM53C50U)
■Light reminder buzzer
A buzzer sounds when the engine switch is turned off or turned to ACCESSORY mode
and the driver’s door is opened while the lights are turned on.
■Operation guide display (vehicles with rain-sensing windshield wipers only)
When the headlight switch is operated to and from the “AUTO” position, the current sta-
tus is displayed on the meters for a few seconds to show that AUTO mode is activated/
deactivated. (P. 8 9 )
■Customization
Settings (e.g. light sensor se nsitivity) can be changed.
(Customizable features: P. 5 3 7 )
NOTICE
■To prevent battery discharge
Do not leave the lights on longer than ne cessary when the engine is not running.

1784-3. Operating the lights and wipers
IS350/250_U (OM53C50U)
■The Automatic High Beam can be operated when
The engine switch is in IGNITION ON mode.
■Camera sensor dete ction information
●High beam may not be automatically tu rned off in the following situations:
• When oncoming vehicles sudd enly appear from a curve
• When the vehicle is cut in front of by another vehicle
• When oncoming or preceding vehicles are hidden from sight due to repeated
curves, road dividers or roadside trees
●High beam may be turned off if an oncoming vehicle that is using fog lights without
using the headlights is detected.
●House lights, street lights, red traffic signals, and illuminated billboards or signs may
cause the high beam to turn off.
●The following factors may affect the amount of time taken to turn high beam on or off:
• The brightness of headlights, fog lights, and tail lights of oncoming and preceding
vehicles
• The movement and direction of oncoming and preceding vehicles
• When an oncoming or preceding vehicle only has operational lights on one side
• When an oncoming or preceding vehicle is a two-wheeled vehicle
• The condition of the road (gradient, curve, condition of the road surface etc.)
• The number of passengers and amount of luggage
●High beam may be turned on or off when unexpected by the driver.
●Small vehicles, such as bicy cles, may not be detected.
●In the situations below, the system may not be able to correctly detect the surrounding
brightness levels, and may flash or expose nearby pedestrians to the high beam. There-
fore, you should consider turning the high be ams on or off manually rather than relying
on the Automatic High Beam system.
• In bad weather (rain, snow, fog, sandstorms etc.)
• The windshield is obscured by fog, mist, ice, dirt etc.
• The windshield is cracked or damaged.
• The camera sensor is deformed or dirty.
• Surrounding brightness levels are equal to those of headlights, tail lights or fog lights.
• Vehicles ahead have headlights or tail lights that are either switched off, dirty, chang-
ing color, or have improperly adjusted aim.
• When driving through an area of intermit tently changing brightness and darkness.
• When frequently and repeatedly driving ascending/descending roads, or roads with
rough, bumpy or uneven surfaces (such as stone-paved roads, gravel tracks etc.).
• When frequently and repeat edly taking curves or driving on a winding road.
• There is a highly reflective object ahead of the vehicle, such as a sign or a mirror.
• The vehicle’s headlights are damaged or dirty.
• The vehicle is listing or titling, due to a flat tire, a trailer being towed etc.
• The driver believes that the high beam may be causing problems or distress to other
drivers or pedestrians nearby.

1804-3. Operating the lights and wipers
IS350/250_U (OM53C50U)
NOTICE
■Notes when using the Automatic High Beam system
●Do not touch the camera sensor.
●Do not subject the camera sensor to a strong impact.
●Do not disassemble the camera sensor.
●Do not spill liquid onto the camera sensor.
●Do not apply window tinting or stickers to the camera sensor or the area of wind-
shield near the camera sensor.
●Do not place items on the dashboard. There is a possibility that the camera sensor will
mistake items reflected in the windshield for streetlights, the headlights of other vehi-
cles, etc.
●Do not install a parking tag or any other accessories near or around the camera sen-
sor.
●Do not overload the vehicle.
●Do not modify the vehicle.
●Do not replace windshield with non-genuine windshield.
Contact your Lexus dealer.
Observe the following to ensure that the Auto-
matic High Beam functions correctly.

1814-3. Operating the lights and wipers
4
Driving
IS350/250_U (OM53C50U)
(U.S.A.) or (Canada) Turns the fog lights off
Turns the fog lights on
■Fog lights can be used when
The headlights are on in low beam.
■Operation guide display (vehicles with rain-sensing windshield wipers only)
When the fog light switch is operated, the curr ent status is displayed on the meters for a
few seconds. ( P. 8 9 )
Fog light switch

: If equipped
The fog lights secure excellent visibility in difficult driving conditions, such as
in rain and fog.
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1824-3. Operating the lights and wipers
IS350/250_U (OM53C50U)
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
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2
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4
or or or
OffTe m p o r a r y operationTe m p o r a r y operationIntermittent operationHigh speedoperation
Intermittent
operationOffOffLow speedoperationHigh speed operation
Low speed operationOffIntermittent operationHigh speedoperationHigh speedoperation
High speed operationOffLow speedoperationNo changeNo change
Status
before
operation
Operation

1834-3. Operating the lights and wipers
4
Driving
IS350/250_U (OM53C50U)
Wiper intervals can be adjusted when intermittent operation is selected.Increases the intermittent windshield
wiper frequency
Decreases the intermittent wind-
shield wiper frequency
Washer/wiper dual operation
The wipers will automatically operate a
couple of times after the washer squirts.
Vehicles with headlight cleaners: When
the headlights are on and the lever is
pulled and held, the headlight cleaners
will operate once. After this, the head-
light cleaners will operate every 5th
time the lever is pulled.
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