high LEXUS UX250H 2019 Repair Manual

2594-5. Using the driving support systems
4
Driving
systems are turned off, automatic re-
enabling will not occur when vehicle
speed increases.
■Secondary Collision Brake operating
conditions
The vehicle speed is approximately 6 mph
(10 km/h) or more and the airbag sensor
detects a collision. (The Secondary Colli-
sion Brake will not operate when the vehicle
speed is below approximately 6 mph [10
km/h].)
■Secondary Collision Brake automatic
cancellation
The Secondary Collision Brake is automati-
cally canceled in the following situations.
●The vehicle speed drops below approxi-
mately 6 mph (10 km/h)
●A certain amount of time elapses during
operation
●The accelerator pedal is depressed a
large amount
■Operating conditions of Active Corner-
ing Assist
The system operates in the following situa-
tions.
●TRAC/VSC can operate
●The system determines that the vehicle is
drifting to the outer side when attempting
to accelerate during cornering
●The brake pedal is released
■Reduced effectiveness of the EPS sys-
tem
The effectiveness of the EPS system is
reduced to prevent the system from over-
heating when there is frequent steering
input over an extended period of time. The
steering wheel may feel heavy as a result.
Should this occur, re frain from excessive
steering input or stop the vehicle and turn
the hybrid system off. The EPS system
should return to normal within 10 minutes.
■If a message about AWD system is
shown on the multi-information display
(AWD models)
If one of the following messages is shown on
the multi-information di splay, perform each
action.
●“AWD System Overheated Switching to
2WD Mode”
The AWD system is overheating. Reduce
load on the system by stopping the vehicle
for a while or driving the vehicle at a speed
of 6 mph (10 km/h) or more. If the message
disappears, it is possible to drive the vehicle
normally.
●“AWD System Overheated 2WD Mode
Engaged”
The AWD system has been canceled and
switched to the front-wheel drive due to
overheating. Reduce load on the system by
stopping the vehicle for a while or driving
the vehicle at a speed of 6 mph (10 km/h)
or more. If the message disappears, it is
possible to drive the vehicle normally.
●“AWD System Malfunction 2WD Mode
Engaged Visit Your Dealer”
The AWD system has been stopped and
switched to the front-wheel drive due to a
malfunction. Have your vehicle inspected
by your Lexus dealer immediately.
WARNING
■The ABS does not operate effectively
when
●The limits of tire gripping performance
have been exceeded (such as exces-
sively worn tires on a snow covered
road).
●The vehicle hydroplanes while driving
at high speed on wet or slick road.
■Stopping distance when the ABS is
operating may exceed that of normal
conditions
The ABS is not designed to shorten the
vehicle’s stopping distance. Always main-
tain a safe distance from the vehicle in
front of you, especially in the following
situations:
●When driving on dirt, gravel or snow-
covered roads

2624-6. Driving tips
Control and maintain the vehicle at a
constant speed. Before stopping at a
toll booth or similar, allow plenty of
time to release the accelerator and
gently apply the brakes. A greater
amount of electrical energy can be
regenerated when slowing down.
Use the air conditioning only when
necessary. Doing so can help reduce
excessive gasoline consumption.
In summer: When the ambient tem-
perature is high, use the recirculated
air mode. Doing so will help to reduce
the burden on the air conditioning sys-
tem and reduce fuel consumption as
well.
In winter: Because the gasoline engine
will not automatically cut out until it and
the interior of the vehicle are warm, it
will consume fuel. Also, fuel consump-
tion can be improved by avoiding over-
use of the heater.
Make sure to check the tire inflation
pressure frequently. Improper tire infla-
tion pressure can cause poor fuel
economy.
Also, as snow tires can cause large
amounts of friction, their use on dry
roads can lead to poor fuel economy.
Use tires that are appropriate for the
season. Carrying heavy luggage will lead to
poor fuel economy. Avoid carrying
unnecessary luggage.
Installing a large
roof rack will also cause poor fuel
economy.
Since the gasoline engine starts up and
cuts out automatically when cold,
warming up the engine is unnecessary.
Moreover, frequently driving short dis-
tances will cause the engine to repeat-
edly warm up, which can lead to excess
fuel consumption.
Highway driving
Air conditioning
Checking tire inflation pressure
Luggage
Warming up before driving

2664-6. Driving tips
Specific design characteristics give
it a higher center of gravity than
ordinary passenger cars. This vehi-
cle design feature causes this type
of vehicle to be more likely to roll-
over. Utility vehicles have a signifi-
cantly higher rollover rate than
other types of vehicles.
 An advantage of the higher ground
clearance is a better view of the
road allowing you to anticipate
problems.
 It is not designed for cornering at
the same speeds as ordinary pas-
senger cars any more than low-
slung sports cars designed to per-
form satisfactorily under off-road
conditions. Therefore, sharp turns at
excessive speeds may cause roll-
over.
Your vehicle is not designed to be
driven off-road. However, in the event
that off-road driving cannot be
avoided, please observe the following
precautions to help avoid the areas
prohibited to vehicles.
Utility vehicle precautions
This vehicle belongs to the utility
vehicle class, which has higher
ground clearance and narrower
tread in relation to the height of its
center of gravity.
Utility vehicle feature
WARNING
■Utility vehicle precautions
Always observe the following precau-
tions to minimize the risk of death or seri-
ous injury or damage to your vehicle:
●In a rollover crash, an unbelted person
is significantly more likely to die than a
person wearing a seat belt. Therefore,
the driver and all passengers should
always fasten their seat belts.
●Avoid sharp turns or abrupt maneu-
vers, if at all possible.
Failure to operate this vehicle correctly
may result in loss of control or vehicle
rollover causing death or serious
injury.
●Loading cargo on the roof luggage
carrier will make the center of the
vehicle gravity higher. Avoid high
speeds, sudden starts, sharp turns,
sudden braking or abrupt maneuvers,
otherwise it may result in loss of con-
trol or vehicle rollover due to failure to
operate this vehicle correctly.
●Always slow down in gusty crosswinds.
Because of its profile and higher cen-
ter of gravity, your vehicle is more sen-
sitive to side winds than an ordinary
passenger car. Slowing down will allow
you to have better control.
●Do not drive horizontally across steep
slopes. Driving straight up or straight
down is preferred. Your vehicle (or any
similar off-road vehicle) can tip over
sideways much more easily than for-
ward or backward.
Off-road driving

2785-3. Using the air conditioning system and defogger
■When the outside temperature exceeds
75°F (24°C) and the air conditioning
system is on
●In order to reduce the air conditioning
power consumption, the air conditioning
system may switch to recirculated air
mode automatically.
This may also reduce fuel consumption.
●Recirculated air mode is selected as a
default mode when the power switch is
turned to ON.
●It is possible to switch to outside air mode
at any time by pressing the outside/recir-
culated air mode switch.
■Fogging up of the windows
●The windows will easily fog up when the
humidity in the vehicle is high. Pressing
“A/C” button or selecting “A/C” will
dehumidify the air from the outlets and
defog the windshield effectively.
●If you turn “A/C” off, the windows may fog
up more easily.
●The windows may fog up if the recircu-
lated air mode is used.
■Outside/recirculated air mode
●When driving on dusty roads such as tun-
nels or in heavy traffic, set the out-
side/recirculated air mode switch to the
recirculated air mode. This is effective in
preventing outside air from entering the
vehicle interior. During cooling opera-
tion, setting the recirculated air mode will
also cool the vehicle interior effectively.
●Outside/recirculated air mode may auto-
matically switch de pending on the tem-
perature setting or the inside
temperature.
■Registering air condit ioning settings to
electronic keys (vehicles with driving
position memory)
●Unlocking the vehicle using an electronic
key and turning the power switch to ON
will recall that key’s registered air condi-
tioning settings.
●When the power switch is turned off, the
current air conditioning settings will auto-
matically be registered to the electronic
key that was used to unlock the vehicle.
●The system may not operate correctly if
more than one electr onic key is in the
vicinity or if the smart access system with
push-button start is used to unlock a pas-
senger door.
●The doors that can recall the air condi-
tioning setting when unlocked using the
smart access system with push-button
start can be changed.
* For details, con-
tact your Lexus dealer.
*: The doors that can recall the driving posi-
tion memory are changed at the same
time.
■Operation of the air conditioning sys-
tem in Eco drive mode
●In Eco drive mode, the air conditioning
system is controlled as follows to priori-
tize fuel efficiency
• Engine speed and compressor operation controlled to restrict heating/cooling
capacity
• Fan speed restricted when automatic mode is selected
●To improve air conditioning performance,
perform the following operations
• Turn off eco air conditioning mode ( P.279)
• Adjust the fan speed
•Turn off Eco drive mode
■When the outside temperature is low
The dehumidification function may not
operate even when “A/C” is pressed or
“A/C” is selected.
■Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning
system to the outside air mode.
●During use, various odors from inside and
outside the vehicle may enter into and
accumulate in the air conditioning sys-
tem. This may then cause odor to be
emitted from the vents.
●To reduce potential odors from occur-
ring:
• It is recommended that the air condition- ing system be set to outside air mode
prior to turning the vehicle off.
• The start timing of the blower may be delayed for a short pe riod of time imme-

2825-3. Using the air conditioning system and defogger
In S-FLOW mode, priority for the air-
flow is given to the front seats, reducing
the airflow and air conditioning effect
on the rear seats.
The following S-FLOW modes are
available:
Automatic S-FLOW mode
When a rear passenger is determined
to be in the vehicle, S-FLOW mode will
be automatically disabled.
The indicator will illuminate on the air con-
ditioning control screen when S-FLOW
mode is enabled.
To enable/disable S-FLOW mode and
enter manual S-FLOW mode, select the S-
FLOW mode switch ( P.280).
Manual S-FLOW mode
When the S-FLOW mode switch is
selected, S-FLOW mode will be manu-
ally enabled/disabled.
The indicator will illuminate on the air con-
ditioning control screen when S-FLOW
mode is enabled.
The system does not determine whether a
passenger is in the rear seats by the open-
ing and closing of a rear door, so S-FLOW mode cannot be automatically disabled.
To automatically disable S-FLOW mode by
opening and closing a rear door, switch to
automatic S-FLOW mode.
■S-FLOW air conditioning control
Operation of S-FLOW mode changes
according to the following conditions.
However, depending on the set tem-
perature and air conditioning load is
high, the operation may not change.
 Driver seat priority:
• When the system determines there is no
passenger in the front passenger seat in
manual S-FLOW mode
• When the system determines there are no passengers in the front passenger
seat and rear seats in automatic S-
FLOW mode
The airflow to the front passenger seat and
rear seat stops and the front passenger
temperature display turns off.
 Front seat priority:
When the system determines there are no
passengers in the rear seats
S-FLOW disabled:
When the system determines there is a
passenger in the rear seats
■Passenger presence determination in S-
FLOW mode
The system determines that there is a pas-
senger in any of the following situations.
If a passenger is judged to be in the vehicle,
the system will retain the judgment for a
certain amount of time after the power
switch is turned off.
NOTICE
●Do not stick anything on the sensor
S-FLOW mode

2875-3. Using the air conditioning system and defogger
5
Interior features
■Seat heaters
Turns the seat heaters on/off
Each time the switch is pressed, the opera-
tion condition changes as follows.
AUTO (lit)  Hi (3 segments lit)  Mid
(2 segments lit)  Lo (1 segment lit) 
Off
The AUTO indicator and/or level indi-
cator illuminates during operation.
■Seat ventilators
Turns the seat ventilators on/off
Each time the switch is pressed, the opera-
tion condition changes as follows.
AUTO (lit)  Hi (3 segments lit)  Mid
(2 segments lit)  Lo (1 segment lit) 
Off
The AUTO indicator and/or level indi-
cator illuminates during operation.
■The seat ventilators can be used when
The power switch is in ON.
■Air conditioning system-linked control
mode
When the seat ventilator fan speed level is
Hi, the seat ventilator fan speed becomes
higher according to the fan speed of the air
conditioning system.
■Customization
Settings for the seat heaters and ventilators
can be changed. (Customizable features:
 P.443)
■Main display
Using the touchpad of the Remote
Touch, select the button on the screen.
to can be adjusted by perform-
ing the following operations.
Flick operation: Move the pointer to
the desired item and flick the touchpad
Seat heaters and ventilators
(front seats)
A
B
A
B
WARNING
■To prevent causes of overheating and
minor burn injuries
Observe the following precautions when
using the seat heaters.
●Do not cover the seat with a blanket or
cushion when using the seat heater.
●Do not use seat heater more than nec-
essary.
Control screen
AC

2935-5. Using the storage features
5
Interior features
5-5.Using the storage features
Auxiliary tray/Wireless charger (if equipped) (P.303)
Glove box ( P.294)
Bottle holders ( P.295)
Cup holders ( P.294)
Console box ( P.294)
Coin holder ( P.295)
List of storage features
Location of the storage features
A
B
C
D
E
F
WARNING
■Items that should not be left in the
vehicle
Do not leave glasses, lighters or spray
cans in the storage spaces, as this may
cause the following when cabin tempera-
ture becomes high:
●Glasses may be deformed by heat or
cracked if they come into contact with
other stored items.
●Lighters or spray ca ns may explode. If
they come into contact with other
stored items, the lighter may catch fire
or the spray can may release gas,
causing a fire hazard.

3035-6. Using the other interior features
5
Interior features
charging only. They are not designed
for data transfer or other purposes.
Depending on the external device, it
may not charge properly. Refer to the
manual included with the device
before using a USB charging port.
■Using the USB charging ports
Open the lid.
■The USB charging ports can be used
when
The power switch is in ACC or ON.
■Situations in which the USB charging
ports may not operate correctly
●If a device which consumes more than 2.1
A at 5 V is connected
●If a device designed to communicate with
a personal computer, such as a USB
memory device, is connected
●If the connected extern al device is turned
off (depending on device)
●If the temperature inside the vehicle is
high, such as after the vehicle has been
parked in the sun
■About connected external devices
Depending on the connected external
device, charging may occasionally be sus-
pended and then start again. This is not a
malfunction.
A portable device, such as a smart-
phone or mobile battery, can be
charged by just placing it on the
charging area, provided the device is
compatible with the Qi wireless
charging standard created by the
Wireless Power Consortium.
The wireless charger cannot be used
with a portable device that is larger
NOTICE
■To prevent damage to the USB
charging ports
●Do not insert foreign objects into the
ports.
●Do not spill water or other liquids into
the ports.
●When the USB charging ports are not
in use, close the lids. If a foreign object
or liquid enters a port may cause a
short circuit.
●Do not apply excessive force to or
impact the USB charging ports.
●Do not disassemble or modify the USB
charging ports.
■To prevent damage to external
devices
●Do not leave external devices in the
vehicle. The temperature inside the
vehicle may become high, resulting in
damage to an external device.
●Do not push down on or apply unnec-
essary force to an external device or
the cable of an external device while it
is connected.
■To prevent 12-volt battery discharge
Do not use the USB charging ports for a
long period of time with the hybrid sys-
tem stopped.
Wireless charger (if equipped)

3055-6. Using the other interior features
5
Interior features
■Operation indicator light status
*: Depending on the portable device, the operation indicator light may stay illumi-
nated (orange) after charging has com-
pleted.
 If the operation indicator light blinks
If an error is detected, the operation indi-
cator light will blink (orange). Take the
appropriate measures according to the
table below.
• Blinks (orange) at a one second interval continuously
• Blinks (orange) 3 times repeatedly • Blinks (orange) 4 times repeatedly
■The wireless charger can be operated
when
The power switch is in ACC or ON.
■Portable devices that can be charged
●Portable devices compatible with the Qi
wireless charging standard can be
charged by the wireless charger. How-
ever, compatibility with all devices which
meet the Qi wireless charging standard is
not guaranteed.
●The wireless charger is designed to sup-
ply low power electricity (5 W or less) to
a cellular phone, smartphone, or other
portable device.
■If a cover or accessory is attached to the
portable device
Do not charge a portable device if a cover
or accessory which is not Qi compatible is
attached. Depending on the type of cover
and/or accessory attached, it may not be
possible to charge the portable device. If
the portable device is placed on the
charging area and does not charge, remove
the cover and/or accessories.
■If interference is heard in AM radio
broadcasts while charging
Turn off the wireless charger and check if
Operation indicator lightState
OffThe Wireless char-
ger is off
Green (illuminated)
Standby (charging is
possible)
Charging is com-
plete
*
Orange (illumi-
nated)
A portable device
has been placed on
the charging area
(identifying the por-
table device)
Charging in prog-
ress
Suspected causesMeasure
Vehicle to charger
communication fail-
ure.Contact your Lexus
dealer.
Suspected causesMeasure
A foreign object
exists between the
portable device and
charging area.
Remove the foreign
object.
Portable device is
not positioned prop-
erly on the charging
area.Move the portable
device toward the
center of the
charging area.
Suspected causesMeasure
The temperature of
the wireless charger
is excessively high.Stop charging
immediately and
continue charging
after a while.

3105-6. Using the other interior features
Fold down the armrest for use.
The coat hooks are provided with the
rear assist grips.
NOTICE
●When a portable device is not cen-
tered on the charging area
●When the vehicle is near a TV tower,
electric power plant, gas station, radio
station, large display, airport or other
facility that generates strong radio
waves or electrical noise
●When the portable device is in contact
with, or is covered by any of the follow-
ing metallic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
• Coins
• Metal hand warmers
• Media such as CDs and DVDs
●When wireless keys (that emit radio
waves) other than those of your vehicle
are being used nearby.
If in situations other than above the wire-
less charger does not operate properly
or the operation indicator light is blink-
ing, the wireless charger may be mal-
functioning. Contact your Lexus dealer.
■To prevent failure or damage to data
●Do not bring magnetic cards, such as a
credit card, or magnetic recording
media, close to the wireless charger
while charging. Otherwise, data may
be erased due to the influence of mag-
netism.
Additionally, do not bring precision
instruments such as wrist watches,
close to the wireless charger, as such
objects may malfunction.
●Do not leave portab le devices in the
cabin. The temperature inside the
cabin may become high when parked
in the sun, and cause damage to the
device.
■To prevent 12-volt battery discharge
Do not use the wireless charger for a
long period of time with the hybrid sys-
tem is stopped.
Armrest
NOTICE
■To prevent damage to the armrest
Do not apply too much load on the arm-
rest.
Coat hooks