windshield LEXUS UX250H 2019 User Guide

1814-3. Operating the lights and wipers
4
Driving
out 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 headlights, fog
lights, and tail lights of vehicles ahead
• The movement and direction of vehicles ahead
• When a vehicle ahead only has opera- tional lights on one side
• When a vehicle ahead is a two-wheeled
vehicle
• The condition of the road (gradient, curve, condition of th e road surface, etc.)
• The number of passengers and amount of luggage in the vehicle
●The high beams may turn on or off unex-
pectedly.
●Bicycles or similar vehicles may not be
detected.
●In the following situations the system may
not be able to correctly detect the sur-
rounding brightness le vel. This may cause
the low beams to remain on or the high
beams to flash or dazzle pedestrians or
vehicles ahead. In such a case, it is neces-
sary to manually switch between the high
and low beams.
• When driving in inclement weather
(heavy rain, snow, fog, sandstorms, etc.)
• When the windshield is obscured by fog, mist, ice, dirt, etc.
• When the windshield is cracked or dam- aged
• When the front camera is deformed or
dirty
• When the temperature of the front cam- era is extremely high
• When the surrounding brightness level is equal to that of head lights, 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 inter-mittently changing brightness and dark-
ness
• When frequently and repeatedly driving
ascending/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 ahead 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 dam- aged 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
repeatedly in an abnormal manner
• When the driver believes that the high beams may be flashing or dazzling
pedestrians or other drivers
■Temporarily lowering sensor sensitivity
The sensitivity of the sensor can be tempo-
rarily lowered.
1 Turn the power switch on while the fol-
lowing conditions are met.
●The headlight switch is in or
position.
●The headlight switch lever is in high beam
position.
●Automatic High Beam switch is on.
2 Turn the power switch to ON.
3 Within 30 seconds after step 2, repeat
pulling the headlight switch lever to the
original position then pushing it to the
high beam position quickly 10 times,
then leave the lever in high beam posi-
tion.
4 If the sensitivity is changed, the Auto-
matic High Beam indicator is turn on
and off 3 times.
Automatic High Beam (headlights) may
turn on even when the vehicle is stopped.

1844-3. Operating the lights and wipers
Operating the lever operates
the wipers or washer as follows:
Intermittent windshield wipers with
interval adjuster
1
*1 or *2 Off
2
*1 or *2 Intermittent
operation 3
*1 or *2 Low speed oper-
ation
4
*1 or *2 High speed oper-
ation
5
*1 or *2 Temporary oper-
ation
*1: For the U.S.A.
*2: For Canada
Wiper intervals can be adjusted when
intermittent operation is selected.
6
Increases the intermittent wind-
shield wiper frequency
7
Decreases the intermittent wind-
shield wiper frequency
8
Washer/wiper dual opera-
tion
Pulling the lever operates the wipers and
washer.
The wipers will automatically operate a
couple of times after the washer squirts.
Windshield wipers and
w
asher
Operating the lever can change
wiper operation to automatic/man-
ual or squirt washer fluid.
NOTICE
■When the windshield is dry
Do not use the wipers, as they may dam-
age the windshield.
Operating the wiper lever

1854-3. Operating the lights and wipers
4
Driving
Vehicles with headlight cleaners:
When the power switch is in ON and the
headlights are on, if the lever is pulled, the
headlight cleaners will operate once. After
this, the headlight cleaners will operate
every 5th time the lever is pulled.
Rain-sensing windshield wipers
When AUTO is selected, the wipers
will operate automatically when the
sensor detects falling rain. The system
automatically adjusts wiper timing in
accordance with rain volume and vehi-
cle speed.
1
*1 or *2 Off
2 Rain-sensing operation
3
*1 or *2 Low speed oper-
ation
4
*1 or *2 High speed oper-
ation
5
*1 or *2 Temporary oper-
ation
*1: For the U.S.A.
*2:For Canada
When AUTO is selected, the sensor
sensitivity can be adjusted by turning
the switch ring.
6 Increases the sensitivity
7 Decreases the sensitivity
8 Washer/wiper dual opera-
tion
Pulling the lever operates the wipers and
washer.
The wipers will automatically operate a
couple of times after the washer squirts.
(After operating several times, the wipers
operate once more time after a short delay
to prevent dripping. However, the dripping
prevention does not operate while the
vehicle is moving.)
Vehicles with headlight cleaners: When the
power switch is in ON and the headlights
are on, if the lever is pulled, the headlight
cleaners will operate once. After this, the
headlight cleaners w ill operate every 5th

1864-3. Operating the lights and wipers
time the lever is pulled.
■The windshield wipers and washer can
be operated when
The power switch is in ON.
■Effects of vehicle speed on wiper opera-
tion (vehicles with rain-sensing wind-
shield wipers)
Vehicle speed affects the Intermittent wiper
interval.
■Raindrop sensor (vehicles with rain-
sensing windshield wipers)
●The raindrop sensor judges the amount
of raindrops.
An optical sensor is adopted. It may not
operate properly when sunlight from the
rising or setting of the sun intermittently
strikes the windshield, or if bugs, etc. are
present on the windshield.
●If the wiper switch is turned to the AUTO
position while the power switch is in ON,
the wipers 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 5°F (-15°C)
or lower, automatic operation may not
occur. In this case, operate the wipers in
any mode other than AUTO mode.
■If no windshield washer fluid sprays
Check that the washer nozzles are not
blocked, if there is washer fluid in the
washer fluid tank.
When the windshield wipers are not
being used, they retract to below the
hood. To enable the windshield wipers
to be lifted when parking in cold condi-
tions or when replacing a windshield
wiper insert, change the rest position of
WARNING
■Caution regarding the use of wind-
shield wipers in AUTO mode (vehi-
cles with 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,
etc. do not become caught in the wind-
shield 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 low visibility. This may lead to
an accident, resulting in death or serious
injury.
NOTICE
■When the washer fluid tank is empty
Do not operate the switch continually as
the washer fluid pump may overheat.
■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.
■To prevent 12-volt battery discharge
Do not leave the wipers on longer than
necessary when the hy brid system is off.
Changing the windshield wiper
rest position/Lifting the wind-
shield wipers

1874-3. Operating the lights and wipers
4
Driving
the windshield wipers to the service
position using the wiper lever.
■Raising the wipers to the service
position
Within approximately 45 seconds of
turning the power switch off, move the
wiper lever to the (U.S.A.) or
(Canada) position and hold it for
approximately 2 se conds or more.
The wipers will move to the service posi-
tion.
■Lifting the windshield wipers
While holding the hook portion of
the wiper arm, lift the windshield wiper
from the windshield.
■Lowering the windshield wipers to the
retracted position
With the windshield wipers placed on the
windshield, turn the power switch to ON
and then move the wiper lever to an operat-
ing position. When the wiper switch is
turned off, the windshield wipers will stop at
the retracted position. Even if the wipers
deviate while the power switch is OFF, the
wipers will return to the normal position.
A
NOTICE
■When lifting the windshield wipers
●Do not lift the windshield wipers when
they are in the retracted position
below the hood. Otherwise, they may
contact the hood, possibly resulting in
damage to a windshield wiper and/or
the hood.
●Do not lift a windshield wiper by the
wiper blade. Otherwise, the wiper
blade may be deformed.
●Do not operate the wiper lever when
the windshield wipe rs are lifted. Oth-
erwise, the windshield wipers may
contact the hood, possibly resulting in
damage to the windshield wipers
and/or hood.

1884-3. Operating the lights and wipers
Operating the switch operates
the rear wiper as follows:
1
or Off
2
or Intermittent opera-
tion
3
or Normal operation 4
Washer/wiper dual opera-
tion
Pushing the lever oper ates the wiper and
washer.
The wipers will automatically operate a
couple of times after the washer squirts.
■The rear window wiper and washer can
be operated when
The power switch is in ON.
■If no windshield washer fluid sprays
Check that the washer nozzles are not
blocked, if there is washer fluid in the
washer fluid tank.
■Reverse-linked rear window wiper func-
tion
When the shift lever is shifted to R when the
front wipers are operating, the rear window
wiper will operate once.
■Back door opening linked rear window
wiper stop function
When the rear window wi per is operating, if
the back door is opened while the vehicle is
stopped, operation of the rear window
wiper will be stopped to prevent anyone
near the vehicle from being sprayed by
water from the wiper. When the back door
is closed, wiper operation will resume.
*
*
: The setting must be customized at your Lexus dealer.
■Customization
Setting of the reverse-linked function can
be changed. (Customizable fea-
tures: P.441
Rear window wiper and
w
asher
The rear window wiper and washer
can be used by operating the lever.
NOTICE
■When the rear window is dry
Do not use the wiper, as it may damage
the rear window.
Operating the wiper lever

1924-5. Using the driving support systems
4-5.Using the driving support systems
■PCS (Pre-Collision System)
 P.198
■LTA (Lane Tracing Assist)
 P.205
■Automatic High Beam
 P.180
■RSA (Road Sign Assist) (if
equipped)
 P.214
■Dynamic radar cruise control with
full-speed range
 P.216 Two types of sensors, located behind
the front grille and windshield, detect
information necessary to operate the
drive assist systems.
Radar sensor
Front camera
Lexus Safety System+2.0
The Lexus Safety System+2.0 con-
sists of the following drive assist sys-
tems and contributes to a safe and
comfortable driving experience:
Driving assist system
WARNING
■Lexus Safety System+2.0
The Lexus Safety System+2.0 is
designed to operate under the assump-
tion that the driver wi ll drive safely, and is
designed to help reduce the impact to
the occupants and the vehicle in the case
of a collision or assist the driver in normal
driving conditions.
As there is a limit to the degree of recog-
nition accuracy and control performance
that this system can provide, do not
overly rely on this system. The driver is
always responsible for paying attention
to the vehicle’s surro undings and driving
safely.
Sensors
WARNING
■To avoid malfunction of the radar sen-
sor
Observe the following precautions.
Otherwise, the radar sensor may not
operate properly, possibly leading to an
accident resulting in death or serious
injury.
A
B

1934-5. Using the driving support systems
4
Driving
WARNING
●Keep the radar sensor and the grille
cover clean at all times.Radar sensor
Grille cover
If the front of the rada r sensor or the front
or back of the grille cover is dirty or cov-
ered with water droplets, snow, etc.,
clean it.
Clean the radar sensor and grille cover
with a soft cloth to avoid damaging them.
●Do not attach accessories, stickers
(including transparent stickers) or
other items to the radar sensor, grille
cover or surrounding area.
●Do not subject the radar sensor or its
surrounding area to a strong impact.
If the radar sensor, front grille, or front
bumper has been subjected to a
strong impact, have the vehicle
inspected by your Lexus dealer.
●Do not disassemble the radar sensor.
●Do not modify or paint the radar sen-
sor or grille cover.
●If the radar sensor, front grille, or front
bumper needs to be removed and
installed, or replaced, contact your
Lexus dealer.
A
B
■To avoid malfunction of the front cam-
era
Observe the following precautions.
Otherwise, the front camera may not
operate properly, possibly leading to an
accident resulting in death or serious
injury.
●Keep the windshield clean at all times.
• If the windshield is dirty or covered with an oily film, water droplets, snow,
etc., clean the windshield.
• If a glass coating agent is applied to the windshield, it will still be necessary to
use the windshield wipers to remove
water droplets, etc. from the area of
the windshield in front of the front
camera.
• If the inner side of the windshield where the front camera is installed is
dirty, contact your Lexus dealer.
●Do not attach objects, such as stickers,
transparent stickers, etc., to the outer
side of the windshield in front of the
front camera (shaded area in the illus-
tration).
From the top of the windshield to
approximately 0.4 in. (1 cm) below
the bottom of the front camera
Approximately 7.9 in. (20 cm)
(Approximately 4.0 in. [10 cm] to the
right and left from the center of the
front camera)
A
B

1944-5. Using the driving support systems
WARNING
●If the part of the windshield in front of
the front camera is fogged up or cov-
ered with condensation, or ice, use the
windshield defogger to remove the
fog, condensation, or ice. (P.277)
●If water droplets cannot be properly
removed from the area of the wind-
shield in front of the front camera by
the windshield wipers, replace the
wiper insert or wiper blade.
If the wiper inserts or wiper blades
need to be replaced, contact your
Lexus dealer.
●Do not attach window tint to the wind-
shield.
●Replace the windshield if it is damaged
or cracked.
If the windshield needs to be replaced,
contact your Lexus dealer.
●Do not allow liquids to contact the
front camera.
●Do not allow bright lights to shine into
the front camera.
●Do not dirty or damage the front cam-
era.
When cleaning the inside of the wind-
shield, do not allow glass cleaner to
contact the lens of the front camera.
Also, do not touch the lens.
If the lens is dirty or damaged, contact
your Lexus dealer.
●Do not subject the front camera to a
strong impact.
●Do not change the installation position
or direction of the front camera or
remove it.
●Do not disassemble the front camera.
●Do not modify any components of the
vehicle around the front camera
(inside rear view mirror, etc.) or ceiling.
●Do not attach any accessories to the
hood, front grille or front bumper that
may obstruct the front camera. Con-
tact your Lexus dealer for details.
●If a surfboard or other long object is to
be mounted on the roof, make sure
that it will not obstruct the front cam-
era.
●Do not modify the headlights or other
lights.

1964-5. Using the driving support systems
■If a warning message is displayed on the multi-information display
A system may be temporarily unavailable or there may be a malfunction in the system.
●In the following situations, perform the actions specified in the table. When the normal
operating conditions are detected, the message will disappear and the system will
become operational.
If the message does not disappear, contact your Lexus dealer.
SituationActions
When the area around a sensor is covered
with dirt, moisture (f ogged up, covered with
condensation, ice, etc. ), or other foreign
matterTo clean the part of the windshield in front of
the front camera, use the windshield wipers
or the windshield defogger of the air condi-
tioning system ( P.277).