battery LEXUS UX250H 2019 Owner's Manual

1103-2. Opening, closing and locking the doors
■If the smart access system with push-
button start or the wireless remote con-
trol does not operate properly
●Use the mechanical key to lock and
unlock the doors. (P.403)
●Replace the key battery with a new one if
it is depleted. (P.368)
■If the 12-volt battery is discharged
The doors cannot be locked and unlocked
using the smart access system with push-
button start or wireless remote control.
Lock or unlock the doors using the
mechanical key. ( P.403)
■Customization
Settings (e.g. unlocking function using a
key) can be changed. (Customizable fea-
tures: P.437)
■Door lock switches (to
lock/unlock)
1
Locks all the doors
2
Unlocks all the doors
■Inside lock buttons (to lock)
Push down the inside lock button to
lock the door.
■Inside door handles (to unlock)
For the front doors
Pull the handle to unlock and open the
door.
When the door is unlo cked, the inside lock
button will pop up.
For the rear doors
Pull the handle to unlock the door. Pull
the handle a second time to open the
door.
WARNING
■To prevent an accident
Observe the following precautions while
driving the vehicle.
Failure to do so may result in a door
opening and an occupant falling out,
resulting in death or serious injury.
●Ensure that all doors are properly
closed and locked.
●Do not pull the inside handle of the
doors while driving.
Be especially careful for the front
doors, as the doors may be opened
even if the inside lock buttons are in
locked position.
●Set the rear door ch ild-protector locks
when children are seated in the rear
seats.
■When opening or closing a door
Check the surroundings of the vehicle
such as whether the vehicle is on an
incline, whether ther e is enough space
for a door to open and whether a strong
wind is blowing. When opening or clos-
ing the door, hold the door handle tightly
to prepare for any unpredictable move-
ment.
Unlocking and locking the doors
from the inside

1193-2. Opening, closing and locking the doors
3
Before driving
■Preventing unintentional operation of
the Hands Free Power Back Door
When an electronic ke y is in the operation
range, the Hands Free Power Back Door
may operate unintentiona lly, so be careful in
the following situations.
●When a large amount of water is applied
to the rear bumper, such as when the
vehicle is being washed or in heavy rain
●When dirt is wiped off the rear bumper
●When a small animal or small object, such
as a ball, moves under the rear bumper
●When an object is moved from under the
rear bumper
●If someone is swinging their legs while sit-
ting on the rear bumper
●If the legs or another part of someone’s
body contacts the rear bumper while
passing by the vehicle
●When the vehicle is parked near an elec-
trical noise source which affects the sen-
sitivity of the Hands Free Power Back
Door, such as a pay parking spot, gas sta-
tion, electrically heated road, or fluores-
cent light
●When the vehicle is near a TV tower,
electric power plant, radio station, large
display, airport or other facility that gen-
erates strong radio waves or electrical
noise
●When the vehicle is parked in a place
where objects such as plants are near the
rear bumper
●If luggage, etc. is set near the rear
bumper
●If accessories or a vehicle cover is
installed/removed near the rear bumper
●When the vehicle is being towed
To prevent unintentional operation, turn the
Hands Free Power Back Door operation
setting off.
■When reconnecting the 12-volt battery
To enable the power back door to operate
properly, close the back door manually.
■Jam protection function
Sensors are installed in the right and left sides of the power back door. When the
door is automatically closing and the sen-
sors are pushed due to an object being
clamped, etc., the jam protection function
operates.
From that position the door automatically
moves a little in the opposite direction and
then the function stops.
■If the back door opener is inoperative
The back door can be unlocked from the
inside.
1 Remove the cover.
To protect the cover, place a rag between
the flathead screwdri ver and the cover as
shown in the illustration.
2 Move the lever.
■Customization
Some functions can be customized. (Cus-
tomizable features: P.438)

1203-2. Opening, closing and locking the doors
WARNING
■Back door closer
●In the event that the back door is left
slightly open, the back door closer will
automatically close it to the fully closed
position. It takes several seconds
before the back door closer begins to
operate. Be careful not to catch fingers
or anything else in the back door, as
this may cause bone fractures or other
serious injuries.
●Be careful not to catch fingers or any-
thing else when using the back door
closer as it still operates when the
power back door system is canceled.
■Power back door
Observe the following precautions when
operating the power back door.
Failure to do so may cause death or seri-
ous injury.
●Check the safety of the surrounding
area to make sure there are no obsta-
cles or anything that could cause any
of your belongings to get caught.
●If anyone is in the vicinity, make sure
they are safe and let them know that
the back door is about to open or
close.
●If the power back door system is dis-
abled, while the back door is operating
automatically, the automatic operation
is stopped. The back door then has to
be operated manually. Take extra care
in this situation, as the back door may
open or close suddenly.
●If the operating conditions of the
power back door ( P.117) are no lon-
ger met, a buzzer may sound and the
back door may stop opening or clos-
ing. The back door then has to be
operated manually. Take extra care
when on an incline, as the back door
may open or close abruptly.
●On an incline, the back door may sud-
denly shut after it opens. Make sure
the back door is fully open and secure.
●In the following situations, the power
back door may detect an abnormality
and automatic operation may be
stopped. In this case, the back door
has to be operated manually. Take
extra care in this situation, as the back
door may open or close suddenly.
• When the back door contacts an obstacle
• When the 12-volt battery voltage sud- denly drops, such as when the power
switch is turned to ON or the hybrid
system is started during automatic
operation
●If a bicycle carrier or similar heavy
object is attached to the back door, the
power back door may not operate,
causing itself to malfunction, or the
back door may suddenly shut again
after being opened, causing some-
one’s hands, arms, head or neck to be
caught and injured. When installing an
accessory part to the back door, using
a genuine Lexus part is recommended.
■Jam protection function
Observe the following precautions.
Failure to do so may cause death or seri-
ous injury.
●Never use any part of your body to
intentionally activa te the jam protec-
tion function.
●The jam protection function may not
work if something gets caught just
before the back door fully closes. Be
careful not to get fingers caught or
anything else.

1253-2. Opening, closing and locking the doors
3
Before driving■If “Key Detected in Vehicle” is shown on
the multi-information display
An attempt was made to lock the doors
using the smart access system with push-
button start while the electronic key was still
inside the vehicle. Retrieve the electronic
key from the vehicle and lock the doors
again.
■Battery-saving function
The battery-saving fu nction will be acti-
vated in order to prevent the electronic key
battery and the 12-volt battery from being
discharged while the vehicle is not in opera-
tion for a long time.
●In the following situations, the smart
access system with pu sh-button start may
take some time to unlock the doors.
• The electronic key has been left in an
area of approximately 6 ft. (2 m) of the
outside of the vehicle for 10 minutes or
longer.
• The smart access system with push-but- ton start has not been used for 5 days or
longer.
●If the smart access system with push-but-
ton start has not been used for 14 days or
longer, the doors cannot be unlocked at
any doors except the driver’s door. In this
case, take hold of the driver’s door han-
dle, or use the wireless remote control or
the mechanical key, to unlock the doors.
■Turning an electronic key to battery-
saving mode
●When battery-saving mode is set, battery
depletion is minimized by stopping the
electronic key from receiving radio
waves.
Press twice while pressing and
holding .
Confirm that the electronic key indicator
flashes 4 times. While the battery-saving
mode is set, the smart access system with
push-button start cannot be used. To cancel
the function, press any of the electronic key
buttons.
●Electronic keys that will not be used for
long periods of time can be set to the bat-
tery-saving mode in advance.
■Conditions affecting operation
The smart access system with push-button
start uses weak radio waves. In the following
situations, the communication between the
electronic key and the vehicle may be
affected, preventing the smart access sys-
tem with push-button start, wireless remote
control and immobilizer system from oper-
ating properly. (Ways of coping: P.403)
●When the electronic key battery is
depleted
●Near a TV tower, electric power plant,
gas station, radio stat ion, large display,
airport or other fac ility that generates
strong radio waves or electrical noise
●When carrying a portable radio, cellular
phone, cordless phone or other wireless
communication device
●When the electronic key is in contact
with, or is covered by the following metal-
lic objects
• Cards to which aluminum foil is attached
SituationCorrection proce-
dure
The power switch
was turned to ACC while the driver’s
door was open (The driver’s door was
opened when the
power switch was in ACC).
Turn the power
switch off and close the driver’s door.
The power switch
was turned off while
the driver’s door was open.
Close the driver’s door.

1263-2. Opening, closing and locking the doors
• Cigarette boxes that have aluminum foil
inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When other wireless ke ys (that emit radio
waves) are being used nearby
●When carrying the electronic key
together with the following devices that
emit radio waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or
metallic objects are attached to the rear
window
●When the electronic key is placed near a
battery charger or electronic devices
●When the vehicle is parked in a pay park-
ing spot where radio waves are emitted.
■Note for the entry function
●Even when the electronic key is within the
effective range (detection areas), the sys-
tem may not operate properly in the fol-
lowing cases:
• The electronic key is too close to the win- dow or outside door handle, near the
ground, or in a high place when the doors
are locked or unlocked.
• The electronic key is on the instrument
panel, luggage room, floor, or in the door
pockets or glove box when the hybrid
system is started or power switch modes
are changed.
●Do not leave the electronic key on top of
the instrument panel or near the door
pockets when exiting the vehicle.
Depending on the radio wave reception
conditions, it may be detected by the
antenna outside the cabin and the door
will become lockable from the outside,
possibly trapping the electronic key
inside the vehicle.
●As long as the electron ic key is within the
effective range, the doors may be locked
or unlocked by anyone. However, only the doors detecting the electronic key
can be used to unlock the vehicle.
●Even if the electronic
key is not inside the
vehicle, it may be po ssible to start the
hybrid system if the el ectronic key is near
the window.
●The doors may unlock if a large amount
of water splashes on the door handle,
such as in the rain or in a car wash when
the electronic key is within the effective
range. (The doors wi ll automatically be
locked after approximately 60 seconds if
the doors are not opened and closed.)
●If the wireless remote control is used to
lock the doors when the electronic key is
near the vehicle, there is a possibility that
the door may not be unlocked by the
entry function. (Use the wireless remote
control to unlock the doors.)
●Touching the door lock sensor while
wearing gloves may delay or prevent lock
operation. Remove the gloves and touch
the lock sensor again.
●When the lock operation is performed
using the lock sensor, recognition signals
will be shown up to two consecutive
times. After this, no recognition signals
will be given.
●If the door handle becomes wet while the
electronic key is within the effective
range, the door may lock and unlock
repeatedly. In that case, follow the follow-
ing correction procedures to wash the
vehicle:
• Place the electronic key in a location 6 ft. (2 m) or more away from the vehicle.
(Take care to ensure that the key is not
stolen.)
• Set the electronic key to battery-saving
mode to disable the smart access system
with push-button start. ( P.125)
●If the electronic key is inside the vehicle
and a door handle becomes wet during a
car wash, a buzzer may sound outside the
vehicle and “Key Detected in Vehicle”
may be shown on the multi-information
display. To turn off the alarm, lock all the
doors.
●The lock sensor may not work properly if
it comes into contact with ice, snow, mud,
etc. Clean the lock sensor and attempt to

1273-2. Opening, closing and locking the doors
3
Before driving
operate it again.
●A sudden approach to the effective
range or door handle may prevent the
doors from being unlocked. In this case,
return the door handle to the original
position and check that the doors unlock
before pulling the door handle again.
●If there is another electronic key in the
detection area, it may take slightly longer
to unlock the doors after the door handle
is gripped.
■When the vehicle is not driven for
extended periods
●To prevent theft of the vehicle, do not
leave the electronic key within 6 ft. (2 m)
of the vehicle.
●The smart access syst em with push-but-
ton start can be deactivated in advance.
●Setting the electronic key to battery-sav-
ing mode helps to reduce key battery
depletion. ( P.125)
■To operate the system properly
Make sure to carry the electronic key when
operating the system. Do not get the elec-
tronic key too close to the vehicle when
operating the system from the outside of the
vehicle.
Depending on the position and holding
condition of the electronic key, the key may
not be detected correctly and the system
may not operate properly. (The alarm may
go off accidentally, or the door lock preven-
tion may not operate.)
■If the smart access system with push-
button start does not operate properly
●Locking and unlocking the doors: Use
the mechanical key. ( P.403)
●Starting the hybrid system: P.404
■Customization
Settings (e.g. smart access system with
push-button start) can be changed. (Cus-
tomizable features: P.437)
If the smart access sy stem with push-button
start has been deactivated by a customized
setting, refer to the explanations for the fol-
lowing operations.
●Locking and unlocking the doors: Use the wireless remote control or
mechanical key. (
P.108, 403)
●Starting the hybrid system and changing
power switch modes: P.404
●Stopping the hybrid system: P.163

1473-5. Opening, closing the windows and moon roof
3
Before driving
The indicator will come on and the
passenger window will be locked.
■The power windows can be operated
when
The power switch is in ON.
■When the 12-volt battery is discon-
nected
The window lock switch is disabled. If nec-
essary, press the window lock switch after
reconnecting the 12-volt battery.
*: If equipped
■Opening and closing
1 Opens the moon roof
*
The moon roof tilts up and then fully opens.
2Closes the moon roof*
*: Lightly press either side of the moon roof
switch to stop the moon roof partway.
■Tilting up and down
1 Tilt the moon roof up
*
2Tilt the moon roof down*
*: Lightly press either side of the moon roof
switch to stop the moon roof partway.
AMoon roof*
Use the overhead switches to open
and close the moon roof and tilt it
up and down.
Operating the moon roof

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

1644-2. Driving procedures
2Set the parking brake (P.172),
and shift the shift lever to P
( P.167).
3
Press the power switch.
4
Release the brake pedal and check
that “ACCESSORY” or “IGNI-
TION ON” is not shown on the
meter.
Modes can be changed by pressing
the power switch with the brake pedal
released. (The mode changes each
time the switch is pressed.) 1
OFF*
The emergency flashers can be used.
2ACC
Some electrical components such as the
audio system can be used.
“ACCESSORY” will be displayed on the
meter.
3ON
All electrical components can be used.
“IGNITION ON” will be displayed on the
meter.
*: If the shift lever is in a position other than
P when turning off the hybrid system, the
power switch will be turned to ACC, not
to OFF.
■Auto power off function
If the vehicle is left in ACC for more than
20 minutes or ON (the hybrid system is not
operating) for more than an hour with the
shift lever in P, the power switch will auto-
matically turn off. However, this function
cannot entirely prevent 12-volt battery dis-
charge. Do not leave the vehicle with the
power switch in ACC or ON for long peri-
ods of time when the hybrid system is not
WARNING
■Stopping the hybrid system in an
emergency
●If you want to stop the hybrid system in
an emergency while driving the vehi-
cle, press and hold the power switch
for more than 2 seconds, or press it
briefly 3 times or more in succession.
(  P.378)
However, do not touch the power
switch while driving except in an emer-
gency. Turning the hybrid system off
while driving will not cause loss of
steering or braking control, however,
power assist to the steering will be lost.
This will make it more difficult to steer
smoothly, so you should pull over and
stop the vehicle as soon as it is safe to
do so.
●If the power switch is operated while
the vehicle is running, a warning mes-
sage will be shown on the multi-infor-
mation display and a buzzer sounds.
●When restarting the hybrid system
after an emergency shutdown, shift the
shift lever to N and press the power
switch shortly and firmly.
Changing power switch modes