sensor Lexus IS300h 2017 Owner's Guide

201
4Driving
IS300h_EE(OM53D89E)
4-1. Before driving
Driving the vehicle .....................202
Cargo and luggage ...................209
Trailer towing (vehicles
without a towing
package) ...................................... 210
Trailer towing (vehicles with
a towing package) ..................... 211
4-2. Driving procedures
Power (ignition) switch ............. 219
EV drive mode ............................ 224
Hybrid transmission .................. 226
Turn signal lever .........................233
Parking brake ..............................235
ASC
(Active Sound Control)........ 236
4-3. Operating the lights
and wipers
Headlight switch ......................... 237
Automatic High Beam .............240
Fog light switch ........................... 244
Windshield wipers and
washer .........................................245
4-4. Refueling
Opening the fuel tank cap......253
4-5. Using the driving support
systems
Lexus Safety System+ .............. 257
PCS (Pre-Collision
System) ....................................... 265
LDA (Lane Departure Alert
with steering control) ............ 279
RSA (Road Sign Assist) ..........288
Dynamic radar cruise
control ......................................... 293
Cruise control .............................305
Lexus parking
assist-sensor..............................309
Lexus parking assist
monitor ......................................... 318
BSM
(Blind Spot Moni tor) ............. 334
• BSM function.........................340
• RCTA function...................... 343
Driving mode select
switch ...........................................348
Driving assist systems .............. 352
4-6. Driving tips
Hybrid vehicle
driving tips..................................358
Winter driving tips ...................... 361

2384-3. Operating the lights and wipers
IS300h_EE(OM53D89E)
This system allows the headlights and front position lights to be turned on for 30
seconds when the power switch is off.
Pull the lever toward you and release it
with the light switch is in or
after turning the power switch off.
Pull the lever toward you and release it again to turn off the lights.
■Daytime running light system
To make your vehicle more visible to other drivers during daytime driving, the daytime
running lights turn on automatically whenever the hybrid system is started with the head-
light switch off or in the “AUTO” position and the parking brake is released. (Illuminate brighter than the front position lights.) Da ytime running lights are not designed for use at
night.
■Headlight control sensor
■Automatic light off system
●When the light switch is in the or position: The headlights turn off auto-
matically if the power switch is turned to ACCESSORY mode or off.
●When the light switch is in the position: The headlights and all lights turn off auto-
matically if the power switch is turned to ACCESSORY mode or off.
To turn the lights on again, turn the power switch to ON mode, or turn the light switch to
the position once and then back to the or position.
Follow me home system
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 li ght and may cause the automatic headlight syst em to malfunction.

2394-3. Operating the lights and wipers
4
Driving
IS300h_EE(OM53D89E)
■Light reminder buzzer
A buzzer sounds when the power switch is turned off or turned to ACCESSORY mode and the driver’s door is opened while the lights are turned on.
■Automatic headlight leveling system
The level of the headlights is automatically adjusted 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.
■Customization
Settings (e.g. light sensor se nsitivity) can be changed.
(Customizable features: P. 662)
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than ne cessary when the hybrid system is off.

2404-3. Operating the lights and wipers
IS300h_EE(OM53D89E)
Push the lever away from you with
the headlight switch in the or
position.
Press the Automatic High Beam
switch.
The Automatic High Beam indicator will
come on when the system is operating.
Automatic High Beam
: If equipped
The Automatic High Beam uses a came ra sensor located behind the upper
portion of the windshield to assess the brightness of the lights of vehicles
ahead, streetlights, etc., and automatica lly turns the high beams on or off as
necessary.
WARNING
■Limitations of the Automatic High Beam
Do not overly rely on the Automatic High Beam. Always drive safely, taking care to observe your surroundings and turning the hi gh beams on or off manually if necessary.
■To prevent incorrect operation of the Automatic High Beam system
Do not overload the vehicle.
Activating the Automatic High Beam
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2424-3. Operating the lights and wipers
IS300h_EE(OM53D89E)
■Conditions to turn the high beams on/off automatically
●When all of the following conditions are met, the high beams will be turned on automat-
ically (after approximately 1 second):
• The vehicle speed is approximat ely 40 km/h (25 mph) or more.
• The area ahead of the vehicle is dark.
• There are no vehicles ahead with headlights or tail lights turned on. • There are few streetlights on the road ahead.
●If any of the following conditions is met, the high beams will turn off automatically:
• The vehicle speed is below approximately 30 km/h (19 mph).
• The area ahead of the vehicle is not dark.
• Vehicles ahead have their headli ghts or tail lights turned on. • There are many streetlights on the road ahead.
■Camera sensor dete ction information
●The high beams may not be automatically turned off in the following situations:
• When a vehicle suddenly appears from around a curve
• When the vehicle is cut in front of by another vehicle
• When vehicles ahead cannot be detected due to repeated curves, road dividers or roadside trees
• When vehicles ahead appear in a faraway lane on a wide road
• When the lights of vehicles ahead are not on
●The high beams may be turned off if a vehicle ahead that is using fog lights without its
headlights turned on is detected.
●House lights, street lights, traffic signals, and illuminated billboards or signs and other
reflective objects may cause the high beams to change to the low beams, or the low
beams to remain on.
●The following factors may affect the amount of time taken for the high beams to turn on
or off:
• The brightness of the head lights, fog lights, and tail lights of vehicles ahead • The movement and direction of vehicles ahead
• When a vehicle ahead only has operational lights on one side
• When a vehicle ahead is a two-wheeled vehicle • The condition of the road (gradient, cu rve, condition of the road surface, etc.)
• The number of passengers and am ount of luggage in the vehicle
●The high beams may turn on or off unexpectedly.

2434-3. Operating the lights and wipers
4
Driving
IS300h_EE(OM53D89E)
●Bicycles or similar vehicles may not be detected.
●In the following situations the system may not be able to correctly detect the surround- ing brightness level. This may cause the lo w beams to remain on or the high beams to
flash or dazzle pedestrians or vehicles ahead. In such a case, it is necessary to manually
switch between the high and low beams.
• When driving in inclement weather (hea vy rain, snow, fog, sandstorms, etc.)
• When the windshield is obscured by fog, mist, ice, dirt, etc.
• When the windshield is cracked or damaged • When the camera sensor is deformed or dirty
• When the temperature of the camera sensor is extremely high
• When the surrounding brightness level is equal to that of headlights, tail lights or fog lights
• When headlights or tail lights of vehicles ahead are turned off, dirty, changing color,
or not aimed properly • When the vehicle is hit by water, snow , dust, etc. from a preceding vehicle
• When driving through an area of interm ittently changing brightness and darkness
• When frequently and repeatedly driving as cending/descending roads, or roads with rough, bumpy or uneven surfaces (such as stone-paved roads, gravel roads, etc.)
• When frequently and repeatedly taking curves or driving on a winding road
• When there is a highly reflective object ahea d of the vehicle, such as a sign or mirror • When the back of a preceding vehicle is highly reflective, such as a container on a
truck
• When the vehicle's headlights are damage d or dirty, or are not aimed properly • When the vehicle is listing or titling due to a flat tire, a trailer being towed, etc.
• When the headlights are changed between the high beams and low beams repeat-
edly in an abnormal manner • When the driver believes that the high beams may be flashing or dazzling pedestri-
ans or other drivers
• When the vehicle is used in an area in which vehicles travel on the opposite side of
the road of the country for which the vehicle was designed, for example using a vehi- cle designed for right-hand traffic in a left-hand traffic area, or vice versa

2484-3. Operating the lights and wipers
IS300h_EE(OM53D89E)
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 afte r the washer squirts.
When the power swit ch is in ON mode and the headlights are on, if the lever is
pulled, the headlight cleaners will oper-
ate once. After this, the headlight clean- ers 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 wh en the vehicle is stopped and the wiper is off. The
wiper operation cannot be sw itched 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.
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Switching between the intermittent windshield wipers and rain-sensing
windshield wipers (vehicles with rain-sensing windshield wipers)

2514-3. Operating the lights and wipers
4
Driving
IS300h_EE(OM53D89E)
■The windshield wiper and washer can be operated when
The power switch is in ON mode.
■Dripping prevention wiper sweep
After performing a washing and wiping operat ion 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 intermitte nt wiper operation only when the vehicle is stationary.
■Raindrop sensor (vehicles with rain-sensing windshield wipers)
●If the wiper is turned to AUTO mode while the power switch is in ON mode, the wipers
will operate once to show th at AUTO mode is activated.
●If the temperature of the raindrop sensor is 85°C (185°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 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 inte rmittently strikes the windshield, or if bugs etc. are present on the
windshield.

2524-3. Operating the lights and wipers
IS300h_EE(OM53D89E)
WARNING
■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 vibratio n 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 cau sed if the lever is pulled toward you and held continually.
■When a nozzle becomes blocked
In this case, contact any authorized Lexus re tailer or Lexus authorized repairer, or any reliable repairer.
Do not try to clear it with a pin or other object. The nozzle will be damaged.

2594-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
Two types of sensors, located behind the front grille and windshield, detect infor-
mation necessary to operate the drive assist systems.
Radar sensor
Camera sensor
Sensors
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WARNING
■To avoid malfunction of the radar sensor
Observe the following precautions.
Otherwise, the radar sensor may not operat e properly, possibly leading to an accident
resulting in death or serious injury.
●Keep the radar sensor and front grille emblem clean at all times.
●Do not attach accessories, stickers (including transparent stickers) or other items to
the radar sensor, fron t grille emblem or surrounding area.
●Do not subject the radar sensor or surrounding area to a strong impact.
If the radar sensor, front gril le, or front bumper has been subjected to a strong impact,
have the vehicle inspected by your auth orized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
●Do not disassemble the radar sensor.
●Do not modify or paint the radar sensor, front grille emblem or surrounding area.
●If the radar sensor, front grille, or front bumper needs to be removed and installed, or
replaced, contact your authorized Lexus retailer or Lexus authorized repairer, or any
reliable repairer.
Radar sensor
Front grille emblem
If the front of the radar sensor or the front or
back of the front grille emblem is dirty or
covered with water droplets, snow, etc., clean it.
Clean the radar sensor and front grille
emblem with a soft cloth so you do not mark or damage them.
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