open LEXUS UX250H 2019 Workshop Manual

1493-5. Opening, closing the windows and moon roof
3
Before driving
WARNING
■Opening and closing the moon roof
●The driver is responsible for moon roof
opening and closing operations.
In order to prevent accidental opera-
tion, especially by a child, do not let a
child operate the moon roof. It is possi-
ble for children and other passengers
to have body parts caught in the moon
roof.
●Check to make sure that all passen-
gers do not have any part of their body
in a position where it could be caught
when the moon roof is being operated.
●When using the wireless remote con-
trol or mechanical key and operating
the moon roof, operate the moon roof
after checking to make sure that there
is no possibility of any passenger hav-
ing any of their body parts caught in
the moon roof. Also, do not let a child
operate moon roof by the wireless
remote control or mechanical key. It is
possible for children and other passen-
gers to get caught in the moon roof.
●When exiting the vehicle, turn the
power switch off, carry the key and exit
the vehicle along with the child. There
may be accidental operation, due to
mischief, etc., that may possibly lead to
an accident.
■Jam protection function
●Never use any part of your body to
intentionally activate the jam protec-
tion function.
●The jam protection function may not
work if something gets caught just
before the moon roof is fully closed.
Also, the jam protection function is not
designed to operate while the moon
roof switch is being pressed. Take care
so that your fingers, etc. do not get
caught.

1503-5. Opening, closing the windows and moon roof

151
4
4
Driving
Driving
4-1. Before drivingDriving the vehicle ..................... 152
Cargo and luggage ................... 157
Vehicle load limits ...................... 160
Trailer towing ............................... 160
Dinghy towing .............................. 161
4-2. Driving procedures Power (ignition) switch ............ 162
EV drive mode ............................ 165
Hybrid transmission .................. 167
Turn signal lever........................... 171
Parking brake .............................. 172
Brake Hold.................................... 175
ASC (Active Sound Control) 176
4-3. Operating the lights and wipers Headlight switch ......................... 177
Automatic High Beam ............. 180
Fog light switch ........................... 183
Windshield wipers and washer ......................................................... 184
Rear window wiper and washer ......................................................... 188
4-4. Refueling Opening the fuel tank cap...... 190
4-5. Using the driving support sys- tems
Lexus Safety System+2.0 ....... 192
PCS (Pre-Collision System).. 198
LTA (Lane Tracing Assist)..... 205
RSA (Road Sign Assist) ........... 214Dynamic radar cruise control with
full-speed range....................... 216
BSM (Blind Spot Monitor) .... 226
PKSA (Parking Support Alert) ........................................................ 231
Intuitive parking assist ............. 232
RCTA (Rear Cross Traffic Alert) function....................................... 239
PKSB (Parking Support Brake) ....................................................... 243
Parking Support Brake function (static objects) ......................... 247
Parking Support Brake function (rear-crossing vehicles) ...... 252
Driving mode select switch .. 255
Driving assist systems.............. 256
4-6. Driving tips Hybrid vehicle driving tips ..... 261
Winter driving tips .................... 263
Utility vehicle precautions..... 266

1554-1. Before driving
4
Driving
WARNING
●Do not shift the shift lever to a driving
position while the vehicle is moving
backward.
Doing so can damage the hybrid trans-
mission and may result in a loss of vehi-
cle control.
●Shifting the shift lever to N while the
vehicle is moving will disengage the
hybrid system. Engine braking is not
available with the hybrid system disen-
gaged.
●Be careful not to shift the shift lever
with the accelerator pedal depressed.
Shifting the shift lever to any position
other than P or N may lead to unex-
pected rapid acceleration of the vehi-
cle that may cause an accident and
result in death or serious injury.
■If you hear a squealing or scraping
noise (brake pad wear limit indica-
tors)
Have the brake pads checked and
replaced by your Lexus dealer as soon as
possible. Rotor damage may result if the
pads are not replaced when needed.
It is dangerous to drive the vehicle when
the wear limits of the brake pads and/or
those of the brake discs are exceeded.
■When the vehicle is stopped
●Do not depress the accelerator pedal
unnecessarily.
If the shift lever is in any position other
than P or N, the vehicle may acceler-
ate suddenly and unexpectedly, caus-
ing an accident.
●In order to prevent accidents due to
the vehicle rolling away, always keep
depressing the brake pedal while
stopped with the “READY” indicator is
illuminated, and apply the parking
brake as necessary.
●If the vehicle is stopped on an incline,
in order to prevent accidents caused
by the vehicle rolling forward or back-
ward, always depress the brake pedal
and securely apply the parking brake
as needed.
●Avoid revving or racing the engine.
Running the engine at high speed
while the vehicle is stopped may cause
the exhaust system to overheat, which
could result in a fire if combustible
material is nearby.
■When the vehicle is parked
●Do not leave glasses, cigarette lighters,
spray cans, or soft drink cans in the
vehicle when it is in the sun.
Doing so may result in the following:
• Gas may leak from a cigarette lighter or spray can, and may lead to a fire.
• The temperature inside the vehicle may cause the plastic lenses and plas-
tic material of glasses to deform or
crack.
• Soft drink cans may fracture, causing the contents to spray over the interior
of the vehicle, and may also cause a
short circuit in the vehicle’s electrical
components.
●Do not leave cigarette lighters in the
vehicle. If a cigare tte lighter is in a
place such as the glove box or on the
floor, it may be lit accidentally when
luggage is loaded or the seat is
adjusted, causing a fire.
●Do not attach adhesive discs to the
windshield or windows. Do not place
containers such as air fresheners on
the instrument panel or dashboard.
Adhesive discs or containers may act
as lenses, causing a fire in the vehicle.
●Do not leave a door or window open if
the curved glass is coated with a met-
allized film such as a silver-colored
one. Reflected sunlight may cause the
glass to act as a lens, causing a fire.

1624-2. Driving procedures
4-2.Driving procedures
1Press the parking brake switch to
check that the parking brake is set.
(P.172)
Parking brake indicator will come on.
2 Check that the shift lever is in P.
3 Firmly depress the brake pedal.
and a message will be displayed on the
multi-information display.
If it is not displayed, the hybrid system can-
not be started.
4 Press the power switch shortly and
firmly.
When operating the power switch, one
short, firm press is enough.
It is not necessary to press and hold the
switch.
If the “READY” indicator turns on, the
hybrid system will operate normally.
Continue depressing the brake pedal until
the “READY” indicator is illuminated.
The hybrid system can be started from any
power switch mode.
5Check that the “READY” indicator
is illuminated.
The vehicle will not move when the
“READY” indicator is off.
■Power switch illumination
According to the situation, the power
switch illumination operates as follows.
●When a door is opened, or the power
switch mode is changed from ACC or
ON to OFF, the power switch illumina-
tion slowly blinks.
●When depressing the brake pedal with
carrying the electronic key on your per-
son, the power switch illumination rapidly
blinks.
●When the power switch is in ACC or
ON, the power switch illumination illumi-
nates.
■If the hybrid system does not start
●The immobilizer system may not have
been deactivated. ( P.69)
Contact your Lexus dealer.
●If a message related to start-up is shown
on the multi-information display, read the
message and follow the instructions.
●The smart access system with push-but-
ton start may not be operating prop-
erly.( P.404)
■When the ambient temperature is low,
such as during winter driving conditions
When starting the hybrid system, the flash-
ing time of the “READY” indicator may be
long. Leave the vehicle as it is until the
“READY” indicator is steady on, as steady
means the vehicle is able to move.
■Sounds and vibrations specific to a
hybrid vehicle
 P.64
■Electronic key battery depletion
 P.104
■Conditions affecting operation
 P.125
■Note for the entry function
 P.126
Power (ignition) switch
Performing the following opera-
tions when carryin g the electronic
key on your person starts the hybrid
system or changes power switch
modes.
Starting the hybrid system

1634-2. Driving procedures
4
Driving
■Steering lock function
●After turning the power switch off and
opening and closing the doors, the steer-
ing wheel will be locked due to the steer-
ing lock function. Operating the power
switch again automatically cancels the
steering lock.
●When the steering lock cannot be
released, “Push Power Switch while Turn-
ing Steering Wheel in Either Direction”
will be displayed on the multi-information
display.
Check that the shift lever is in P. Press the
power switch shortly and firmly while
turning the steering wheel left and right.
●To prevent the steering lock motor from
overheating, operation of the motor may
be suspended if the hybrid system is
turned on and off repeatedly in a short
period of time. In this case, refrain from
operating the hybrid system. After about
10 seconds, the steering lock motor will
resume functioning.
■If the “READY” indicator does not come
on
In the event that the “READY” indicator
does not come on even after performing
the proper procedures for starting the vehi-
cle, contact your Lexus dealer immediately.
■If the hybrid system is malfunctioning
 P.68
■Electronic key battery
 P.368
■Operation of the power switch
●If the switch is not pressed shortly and
firmly, the power switch mode may not
change or the hybrid system may not
start.
●If attempting to restart the hybrid system
immediately after turning the power switch off, the hybrid system may not start
in some cases. After turning the power
switch off, please wait a few seconds
before restarting the hybrid system.
■Customization
If the smart access system with push-button
start has been deactivated in a customized
setting, refe r to P.403
1Stop the vehicle completely.
WARNING
■When starting the hybrid system
Always start the hybrid system while sit-
ting in the driver’s seat. Do not depress
the accelerator pedal while starting the
hybrid system under any circumstances.
Doing so may cause an accident result-
ing in death or serious injury.
■Caution while driving
If hybrid system failure occurs while the
vehicle is moving, do not lock or open the
doors until the vehicle reaches a safe and
complete stop. The steering lock func-
tion will activate and this may lead to an
accident, resulting in death or serious
injury.
NOTICE
■When starting the hybrid system
If the hybrid system becomes difficult to
start, have your vehicle checked by your
Lexus dealer immediately.
■Symptoms indicating a malfunction
with the power switch
If the power switch seems to be operat-
ing somewhat differently than usual, such
as the switch sticking slightly, there may
be a malfunction. Contact your Lexus
dealer immediately.
Stopping the hybrid system

1784-3. Operating the lights and wipers
■Automatic light off system
●When the headlights come on: The head-
lights and tail lights turn off 30 seconds
after a driver’s door is opened and closed
if the power switch is turned to ACC or
OFF. (The lights turn off immediately if on the key is pressed after all the
doors are locked.)
●When only the tail lights come on: The tail
lights turn off automatically if the power
switch is turned to ACC or OFF. and the
driver’s door is opened.
To turn the lights on again, turn the power
switch to ON, or turn the light switch off
once and then back to or .
■Automatic headlight leveling system (if
equipped)
The level of the headlights is automatically
adjusted according to the number of pas-
sengers and the loading condition of the
vehicle to ensure that the headlights do not
interfere with other road users.
■Windshield wiper linked headlight illu-
mination
When driving during daytime with the
headlight switch turned to position, if
the windshield wipers are used, the head-
lights will turn on auto matically after several
seconds to help enha nce the visibility of
your vehicle.
■12-volt battery-saving function
In order to prevent the 12-volt battery of the
vehicle from discharging, if the headlights
and/or tail lights are on when the power
switch is turned off the 12-volt battery sav-
ing function will operate and automatically
turn off all the lights after approximately 20 minutes. When the power switch is turned
to ON, the 12-volt battery-saving function
will be disabled.
When any of the following are performed,
the 12-volt battery-saving function is can-
celed once and then reactivated. All the
lights will turn off automatically 20 minutes
after the 12-volt battery-saving function has
been reactivated:
●When the headlight switch is operated
●When a door is opened or closed
■Welcome light illumination control
The parking and tail lights automatically
turn on at night when the doors are
unlocked using the entry function or wire-
less remote control if the light switch is in
the position.
■Customization
Settings (e.g. light sensor sensitivity) can be
changed. (Customizable features:
 P.440)
1With the headlights on, push the
lever away from you to turn on the
high beams.
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than
necessary when the hybrid system is not
operating.
Turning on the high beam head-
lights

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

1904-4. Refueling
4-4.Refueling
Turn the power switch off and
ensure that all the doors and win-
dows are closed.
 Confirm the type of fuel.
■Fuel types
 P.423
■Fuel tank opening for unleaded gasoline
To help prevent incorrect fueling, your vehi-
cle has a fuel tank opening that only accom-
modates the special nozzle on unleaded
fuel pumps.
Opening the fuel tank cap
The fuel tank of your vehicle has a
special structure, which requires a
reduction in fuel tank pressure
before refueling. After the opener
switch has been pressed, it will take
several seconds until the vehicle is
ready for refueling.
Before refueling the vehicle
WARNING
■When refueling the vehicle
Observe the following precautions while
refueling the vehicle. Failure to do so may
result in death or serious injury.
●After exiting the vehicle and before
opening the fuel door, touch an
unpainted metal surface to discharge
any static electricity. It is important to
discharge static electricity before refu-
eling because sparks resulting from
static electricity can cause fuel vapors
to ignite while refueling.
●Always hold the grips on the fuel tank
cap and turn it slowly to remove it.
A whooshing sound may be heard
when the fuel tank cap is loosened.
Wait until the sound cannot be heard
before fully removing the cap. In hot
weather, pressurized fuel may spray
out of the filler neck and cause injury.
●Do not allow anyone that has not dis-
charged static electricity from their
body to come close to an open fuel
tank.
●Do not inhale vaporized fuel.
Fuel contains substances that are
harmful if inhaled.
●Do not smoke while refueling the vehi-
cle.
Doing so may cause the fuel to ignite
and cause a fire.
●Do not return to the vehicle or touch
any person or object that is statically
charged. This may cause static elec-
tricity to build up, resulting in a possible
ignition hazard.
■When refueling
Observe the following precautions to
prevent fuel overflowing from the fuel
tank:
●Securely insert the fuel nozzle into the
fuel filler neck.
●Stop filling the tank after the fuel noz-
zle automatically clicks off.
●Do not top off the fuel tank.

1914-4. Refueling
4
Driving
1Press the opener switch.
The fuel filler door will open within about
10 seconds of the switch being pressed.
Before refueling is possible, a message will
be shown on the multi-information display
in the instrument clus ter to indicate the
progress of the fuel filler door opener.
2Turn the fuel tank cap slowly and
remove it, then put it into the holder
on the fuel filler door.
■When the fuel fille r door cannot be
opened
 P.402
After refueling, turn the fuel tank cap
until you hear a click. Once the cap is
released, it will turn slightly in the oppo-
site direction.
NOTICE
■Refueling
●Finish refueling within 30 minutes. If
more than 30 minutes passes, the
internal valve closes. In this condition,
fuel may overflow during the refueling
process. Press the fuel filler door
opener switch again.
●Do not spill fuel during refueling.
Doing so may damage the vehicle,
such as causing the emission control
system to operate abnormally, damag-
ing fuel system components or the
vehicle’s painted surface.
Opening the fuel tank cap
Closing the fuel tank cap
WARNING
■When replacing the fuel tank cap
Do not use anything but a genuine Lexus
fuel tank cap designed for your vehicle.
Doing so may cause a fire or other inci-
dent which may result in death or serious
injury.