Lexus UX 300e (2022 year). Manual in english - page 26

441

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

The warning lights and warning buzzers operate as follows depending on the con-
tent of the message. If a message indicates the need for inspection by a dealer,
have the vehicle inspected by any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer immediately.

: A buzzer sounds the first time a message is shown on the multi-information display.

Warning messages

The warning messages explained below

may differ from the actual messages

according to operation conditions and vehi-

cle specifications.

Warning buzzer

In some cases, the buzzer may not be heard

due to being in a noisy location or audio

sound.

If “EV system stopped Steering power

low” is displayed

This message is displayed if the EV system

is stopped while driving.
When steering wheel operations are

heavier than usual, grip the steering wheel

firmly and operate it using more force than

usual.

If “EV system overheated Output power

reduced” is displayed

This message may be displayed when driv-

ing under severe operating conditions. (For

example, when driving up a long steep hill.)

Handling method:



P.465

If “Shift System Malfunction Shifting

Unavailable Drive to a Safe Place and

Stop” or “Shift System Malfunction Dri-

ving Unavailable” is displayed

There is a malfunction in the shift control

system. Have the vehicle inspected by any

authorized Lexus retailer or Lexus autho-

rized repairer, or any reliable repairer

immediately.

Messages and warnings

Warning

light

Warning buzzer

Warning



Sounds

• Indicates an important situation, such as when a

system related to driving is malfunctioning or that
danger may result if the correction procedure is
not performed

• Indicates a situation, such as when damage to the

vehicle or danger may result

Comes on

or flashes

Sounds

Indicates an important situation, such as when the
systems shown on the multi-information display
may be malfunctioning



Does not sound

• Indicates a condition, such as malfunction of

electrical components, their condition, or indi-
cates the need for maintenance

• Indicates a situation, such as when an operation

has been performed incorrectly, or indicates
how to perform an operation correctly

442

8-2. Steps to take in an emergency

If “Shift to P Before Exiting Vehicle” is

shown

Message is displayed when the driver’s

door is opened without turning the power

switch off with the shift position in any posi-

tion other than P.
Shift the shift position to P.

If “Shift is in N Release accelerator

before shifting” is displayed

The accelerator pedal has been depressed

when the shift position is in N.
Release the accelerator pedal and shift the

shift position to D or R.

If “Press brake when vehicle is stopped

EV system may overheat” is displayed

The message may be displayed when the

accelerator pedal is depressed to hold the

vehicle while the vehicle is stopped on an

incline, etc. The EV system may overheat.

Release the accelerator pedal and depress

the brake pedal.

If “Auto Power Off To Conserve Bat-

tery” is displayed

Power was turned off due to the automatic

power off function. Next time when starting

the EV system, operate the EV system for

approximately 5 minutes to recharge the

12-volt battery.

If “Regenerative Braking Limited Press

Brake to Decelerate” is displayed

Regenerative braking may be restricted in

the following situations. Firmly depress the

brake pedal to decelerate the vehicle.

When electrical energy cannot be regen-

erated any more as the traction battery is

fully charged

When the temperature of the traction

battery is extremely high or extremely

low

When the temperature of the electric

motor or power control unit, etc. is

extremely high

If “High Power Consumption Power to

Climate Temporarily Limited” is dis-

played

Turn off unnecessary electronic equipment

to reduce power consumption.
Please wait until the power supply returns

to normal.

If “Radar Cruise Control Temporarily

shown

The dynamic radar cruise control with full-

speed range system is suspended tempo-

rarily or until the problem shown in the mes-

sage is resolved. (causes and coping

methods:



P.260)

If “Radar Cruise Control Unavailable” is

shown

The dynamic radar cruise control with full-

speed range system cannot be used tempo-

rarily. Use the system when it becomes

available again.

If a message that indicates the malfunc-

tion of front camera is displayed

The following systems may be suspended

until the problem shown in the message is

resolved. (



P.260, 432)

PCS (Pre-Collision System)

LTA (Lane Tracing Assist)

AHS (Adaptive High-beam System) (if

equipped)

AHB (Automatic High Beam) (if

equipped)

RSA (Road Sign Assist)

Dynamic radar cruise control with full-

speed range

If a message that indicates the malfunc-

tion of radar sensor is displayed

The following systems may be suspended

until the problem shown in the message is

resolved. (



P.260, 432)

PCS (Pre-Collision System)

LTA (Lane Tracing Assist)

Dynamic radar cruise control with full-

speed range

443

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

If a message that indicates the need for

visiting any authorized Lexus retailer or

Lexus authorized repairer, or any reli-

able repairer is displayed

The system or part shown on the multi-

information display is malfunctioning. Have

the vehicle inspected by any authorized

Lexus retailer or Lexus authorized repairer,

or any reliable repairer immediately.

If a message that indicates the need for

the shift lever operation is displayed

To prevent the shift lever from being oper-

ated incorrectly or the vehicle from moving

unexpectedly, a message that requires

shifting the shift position may be displayed

on the multi-information display. In that

case, follow the instruction of the message

and shift the shift position.

If a message that indicates the need for

referring to Owner’s Manual is dis-

played

If any of the following messages are

shown on the multi-information display,

follow the instructions.

• “Battery Low” (



P.461)

• “Check Charging System Close

Charging Port Lid” (



P.150)

• “Charging system malfunction”

(



P.150)

• “Charging stopped High energy use”

(



P.150)

If any of the following messages are

shown on the multi-information display, it

may indicate a malfunction. Have the

vehicle inspected by any authorized

Lexus retailer or Lexus authorized

repairer, or any reliable repairer immedi-

ately.

• “Entry & Start System Malfunction”

• “Traction battery system malfunction”

• “Accelerator system malfunction”

• “Plug-in Charging System Malfunction”

• “EV system malfunction”

• “Shift System Malfunction Apply Parking

Brake Securely When Parking See

• “P Switch Malfunction Apply Parking

Brake Securely When Parking See

• “Shift System Unavailable Apply Parking

Brake Securely When Parking See

• “Shift System Malfunction See Owner’s

Manual”

• “Shift System Malfunction Stop in a Safe

• “Battery Low Shifting Unavailable See

If any of the following messages are

shown on the multi-information display, it

may indicate a malfunction. Immediately

stop the vehicle and contact any autho-

rized Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

• “Braking Power Low”

• “Shift System Malfunction”

NOTICE

If “High Power Consumption Power

to Climate Temporarily Limited” is

displayed frequently

There is a possible malfunction relating

to the charging system or the 12-volt bat-

tery may be deteriorating. Have the vehi-

cle inspected by any authorized Lexus

retailer or Lexus authorized repairer, or

any reliable repairer.

If “Battery Low” is displayed fre-

quently

The 12-volt battery may have deterio-

rated. As the battery may discharge in

this state when left unattended, have the

battery inspected by any authorized

Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

If “Maintenance Reqd. For Traction

Battery At Your Dealer” is shown

The traction battery is scheduled to be

inspected or replaced. Have the vehicle

inspected by any authorized Lexus

retailer or Lexus authorized repairer, or

any reliable repairer immediately.

Continuing to drive the vehicle without

having the traction battery inspected

will cause the EV system not to start.

444

8-2. Steps to take in an emergency



Stop the vehicle in a safe place on a
hard, flat surface.



Set the parking brake.

NOTICE

If the EV system does not start, contact

any authorized Lexus retailer or Lexus

authorized repairer, or any reliable

repairer immediately.

If you have a flat tire

Your vehicle is not equipped with a
spare tire, but instead is equipped
with an emergency tire puncture
repair kit.
A puncture caused by a nail or
screw passing through the tire
tread can be repaired temporarily
using the emergency tire puncture
repair kit.

(The kit contains a bottle of sealant.
The sealant can be used only once
to temporarily repair one tire with-
out removing the nail or screw from
the tire.) Depending on the damage
condition of the flat tire, it may not
be able to repaired with the emer-
gency tire puncture repair kit.

After temporarily repairing the tire
with the kit, have the tire repaired
or replaced by any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.

WARNING

If you have a flat tire

Do not continue driving with a flat tire.
Driving even a short distance with a flat

tire can damage the tire and the wheel

beyond repair, which could result in an

accident.

Before repairing the vehicle

445

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises



Shift the shift position to P.



Stop the EV system.



Turn on the emergency flashers.



Check the degree of the tire dam-
age.

A tire should only be repaired with the
emergency tire puncture repair kit if the
damage is caused by a nail or screw pass-
ing through the tire tread.
• Do not remove the nail or screw from

the tire. Removing the object may widen
the opening and make emergency
repair with the repair kit impossible.

• To avoid sealant leakage, move the vehi-

cle until the area of the puncture, if
known, is positioned at the top of the tire.

A flat tire that cannot be repaired with

the emergency tire puncture repair kit

In the following cases, the tire cannot be

repaired with the emergency tire puncture

repair kit. Contact any authorized Lexus

retailer or Lexus authorized repairer, or any

reliable repairer.

When the tire is damaged due to driving

without sufficient air pressure

When there are any cracks or damage at

any location on the tire, such as on the

side wall, except the tread

When the tire is visibly separated from

the wheel

When the cut or damage to the tread is 4

mm (0.16 in.) long or more

When the wheel is damaged

When two or more tires have been punc-

tured

When more than one sharp objects such

as nails or screws have passed through

the tread on a single tire

446

8-2. Steps to take in an emergency

Emergency tire puncture repair kit

Towing eyelet

Bottle

Sticker

Location of the emergency tire puncture repair kit and tools

A
B

Emergency tire puncture repair
kit components

447

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

Compressor

Air pressure gauge

Compressor switch

Power plug

Hose

Air release cap

Emergency tire puncture repair kit

The sealant stored in the emergency tire

puncture repair kit can be used only once

to temporarily repair a single tire. If the

sealant in the bottle and other parts of the

kit have been used and need to be

replaced, contact any authorized Lexus

retailer or Lexus authorized repairer, or

any reliable repairer.

The compressor can be used repeatedly.

The sealant can be used when the outside

temperature is from -30°C (-22°F) to

60°C (140°F).

The kit is exclusively designed for size

and type of tires originally installed on

your vehicle. Do not use it for tires that a

different size than the original ones, or for

any other purposes.

If the sealant gets on your clothes, it may

stain.

If the sealant adheres to a wheel or the

surface of the vehicle body, the stain may

not be removable if it is not cleaned at

once. Immediately wipe away the sealant

with a wet cloth.

During operation of the repair kit, a loud

operation noise is produced. This does

not indicate a malfunction.

Do not use to check or to adjust the tire

pressure.

Note for checking the emergency tire

puncture repair kit

Check the sealant expiry date occasion-

ally. The expiry date is shown on the bot-

tle.

Do not use sealant whose expiry date has

already passed. Otherwise, repairs con-

ducted using the emergency tire punc-

ture repair kit may not be performed

properly.

The sealant has a limited life span. The

expiry date is marked on the bottle. The

sealant should be replaced before the

expiry date. Contact any authorized

Lexus retailer or Lexus authorized

repairer, or any reliable repairer for

replacement.

A
B
C
D

WARNING

If you have a flat tire

Driving even a short distance with a flat

tire can damage the tire and the wheel

beyond repair.
Driving with a flat tire may cause a cir-

cumferential groove on the side wall. In

such a case, the tire may explode when

using a repair kit.

Caution while driving

Store the repair kit in the luggage

compartment. Injuries may result in the

event of an accident or sudden brak-

ing.

448

8-2. Steps to take in an emergency

Pull the lever upwards and open
the deck board.

Unhook the string on the backside
of the deck board.

Attach the string to the hook on the
back door.

Take out the emergency tire punc-
ture repair kit.

Take out the repair kit from the
plastic bag.

Attach the sticker enclosed with the bottle

on the specified locations. (See step

WARNING

The repair kit is exclusively only for

your vehicle. Do not use repair kit on

other vehicles, which could lead to an

accident causing death or serious

injury.

Do not use repair kit for tires that are

different size than the original ones, or

for any other purpose. If the tires have

not been completely repaired, it could

lead to an accident causing death or

serious injury.

Precautions for use of the sealant

Ingesting the sealant is hazardous to

your health. If you ingest sealant, con-

sume as much water as possible, then

immediately consult a doctor.

If sealant gets in eyes or adheres to

skin, immediately wash it off with

water. If discomfort persists, consult a

doctor.

Taking out the emergency tire
puncture repair kit

Emergency repair procedure

449

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

Remove the hose and take out the
power plug from the compressor.

Connect the bottle to the compres-
sor.

Insert and connect the bottle straight into

the compressor as shown in the illustration,

and check that the claws of the bottle are

concealed in the holes.

Connect the hose to the bottle.

As shown in the illustration, make sure the

hose is connected securely to the bottle.

Remove the valve cap from the
valve of the punctured tire.

450

8-2. Steps to take in an emergency

Extend the hose. Remove the air
release cap from the hose.

You will use the air release cap again.

Therefore keep it in a safe place.

Connect the hose to the valve.

Screw the end of the hose clockwise as far

as possible.

Make sure that the compressor
switch is off.

Connect the power plug to the
power outlet socket. (



P.372)

Attach the sticker provided with
the tire puncture repair kit to a

position easily seen from the
driver’s seat.

Check the specified tire inflation
pressure.

Tire inflation pressure is specified on the

label as shown. (



P.474)



Left-hand drive vehicles



Right-hand drive vehicles

Start the EV system. (



P.224)

451

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

To inject the sealant and inflate the
tire, turn the compressor switch on.

Inflate the tire until the recom-
mended pressure is reached.

The sealant will be injected and the
pressure will spike to between 300
kPa (3.0 kgf/cm

or bar, 44 psi)

and 400 kPa (4.0 kgf/cm

or bar,

58 psi), then gradually decrease.

The air pressure gauge will display
the actual tire inflation pressure
about 1 to 5 minutes after the

switch is turned on.

• Turn the compressor switch off and then

check the tire inflation pressure. Being
careful not to over inflate, check and
repeat the inflation procedure until the
specified tire inflation pressure is
reached.

• The tire can be inflated for about 5 to 20

minutes (depending on the outside tem-
perature). If the tire inflation pressure is
still lower than the specified point after
inflation for 25 minutes, the tire is too
damaged to be repaired. Turn the com-
pressor switch off and contact any
authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.

• If the tire inflation pressure exceeds the

specified air pressure, let out some air to
adjust the tire inflation pressure.
(



P.453)

With the compressor switch off,
pull out the power plug from the
power outlet socket and then dis-
connect the hose from the valve on
the tire.

Some sealant may leak when the hose is

removed.

Install the valve cap onto the valve
of the emergency repaired tire.

452

8-2. Steps to take in an emergency

Attach the air release cap to the
end of the hose.

If the air release cap is not attached, the

sealant may leak and the vehicle may get

dirty.

Temporarily store the bottle in the
luggage compartment while it is
connected to the compressor.

To spread the liquid sealant evenly
within the tire, immediately drive
safely for about 5 km (3 miles)
below 80 km/h (50 mph).

After driving, stop your vehicle in a
safe place on a hard, flat surface
and reconnect the repair kit.

Remove the air release cap from the hose

before reconnecting the hose.

Turn the compressor switch on and
wait for several seconds, then turn

it off. Check the tire inflation pres-
sure.

If the tire inflation pressure is under
130 kPa (1.3 kgf/cm

or bar, 19

psi): The puncture cannot be
repaired. Contact any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.

If the tire inflation pressure is 130
kPa (1.3 kgf/cm

or bar, 19 psi) or

higher, but less than the specified
air pressure: Proceed to step

If the tire inflation pressure is the
specified air pressure (



P.474):

Proceed to step

Turn the compressor switch on to
inflate the tire until the specified air
pressure is reached. Drive for
about 5 km (3 miles) and then per-
form step

Attach the air release cap to the
end of the hose.

If the air release cap is not attached, the

sealant may leak and the vehicle may get

453

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

dirty.

Store the bottle in the luggage
compartment while it is connected
to the compressor.

Taking precautions to avoid sud-
den braking, sudden acceleration
and sharp turns, drive carefully at
under 80 km/h (50 mph) to the
nearest authorized Lexus retailer
or Lexus authorized repairer, or
any reliable repairer that is less than
100 km (62 miles) away for tire
repair or replacement.

For repair and replacement of a tire or dis-

posal of the tire puncture repair kit, contact

any authorized Lexus retailer or Lexus

authorized repairer, or any reliable

repairer.
When having the tire repaired or replaced,

make sure to tell any authorized Lexus

retailer or Lexus authorized repairer, or

any reliable repairer that the sealant is

injected.

If the tire is inflated to more than the

specified air pressure

Disconnect the hose from the valve.

Install the air release cap to the end of

the hose and push the protrusion on the

air release cap into the valve to let some

air out.

Disconnect the hose from the valve,

remove the air release cap from the

hose and then reconnect the hose.

Turn the compressor switch on and wait

for several seconds, then turn it off.

Check that the air pressure indicator

shows the specified air pressure is

reached. (



P.474)

If the air pressure is under the desig-

nated pressure, turn the compressor

switch on again and repeat the inflation

procedure until the specified air pres-

sure is reached.

After a tire is repaired with the emer-

gency tire puncture repair kit

The tire pressure warning valve and

transmitter should be replaced.

Even if the tire inflation pressure is at the

recommended level, the tire pressure

warning light may come on/flash.

WARNING

When fixing the flat tire

Stop your vehicle in a safe and flat

area.

Do not touch the wheels or the area

around the brakes immediately after

the vehicle has been driven. After the

vehicle has been driven, the wheels

and the area around the brakes may

be extremely hot. Touching these

areas with hands, feet or other body

parts may result in burns.

454

8-2. Steps to take in an emergency

WARNING

Connect the valve and hose securely

with the tire installed on the vehicle.

If the hose is not properly connected to
the valve, air leakage may occur as seal-
ant may be sprayed out.

If the hose comes off the valve while

inflating the tire, there is a risk that the

hose will move abruptly due to air

pressure.

After inflation of the tire has com-

pleted, the sealant may splatter when

the hose is disconnected or some air is

let out of the tire.

Follow the operation procedure to

repair the tire. If the procedure is not

followed, the sealant may spray out.

Keep back from the tire while it is

being repaired, as there is a chance of

it bursting while the repair operation is

being performed. If you notice any

cracks or deformation of the tire, turn

off the compressor switch and stop the

repair operation immediately.

The repair kit may overheat if oper-

ated for a long period of time. Do not

operate the compressor continuously

for more than 40 minutes.

Parts of the repair kit become hot

during operation. Be careful handling

the repair kit during and after opera-

tion. Do not touch the metal part con-

necting the bottle and the compressor.

It will be extremely hot.

Do not attach the vehicle speed warn-

ing sticker to an area other than the

one indicated. If the sticker is attached

to an area where an SRS airbag is

located, such as the pad of the steering

wheel, it may prevent the SRS air bag

from operating properly.

Driving to spread the liquid sealant

evenly

Observe the following precautions to

reduce the risk of accidents.
Failing to do so may result in a loss of

vehicle control and cause death or seri-

ous injury.

Drive the vehicle carefully at a low

speed. Be especially careful when

turning and cornering.

If the vehicle does not drive straight or

you feel a pull through the steering

wheel, stop the vehicle and check the

following:

• Tire condition. The tire may have sepa-

rated from the wheel.

• Tire inflation pressure. If the tire infla-

tion pressure is 130 kPa (1.3 kgf/cm

or bar, 19 psi) or less, the tire may be

severely damaged.

NOTICE

When performing an emergency

repair

Perform the emergency repair without

removing the nail or screw that has

punctured the tread of the tire. If the

object that has punctured the tire is

removed, repair by the emergency tire

puncture repair kit may not be possi-

ble.

The repair kit is not waterproof. Make

sure that the repair kit is not exposed

to water, such as when it is being used

in the rain.

Do not put the repair kit directly onto

dusty ground such as sand at the side

of the road. If the repair kit vacuums up

dust, etc., a malfunction may occur.

Make sure the sealant bottle of the

repair kit is in a vertical position. The

repair kit does not operate properly

when it is laid.

455

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

One of the following may be the cause
of the problem:



The charging cable may be con-
nected to the vehicle. (



P.114)



The electronic key may not be func-
tioning properly.

(



P.458)



The traction battery may be com-
pletely discharged. Charge the
traction battery. (



P.109)



There may be a malfunction in the
immobilizer system.

(



P.71)



There may be a malfunction in the
shift control system.

(



P.226,

443)



There may be a malfunction in the
steering lock system.



The EV system may be malfunction-
ing due to an electrical problem

NOTICE

Precautions for the emergency tire

puncture repair kit

The repair kit power source should be

12 V DC suitable for vehicle use. Do

not connect the repair kit to any other

source.

Place the repair kit in a storage to pre-

vent it from being exposed to dirt or

water.

Store the repair kit in the luggage

compartment out of reach of children.

Do not disassemble or modify the

repair kit. Do not subject parts such as

the air pressure indicator to impacts.

This may cause a malfunction.

To avoid damage to the tire pressure

warning valves and transmitters

When a tire is repaired with liquid seal-

ants, the tire pressure warning valve and

transmitter may not operate properly. If a

liquid sealant is used, contact any autho-

rized Lexus retailer or Lexus authorized

repairer, or any reliable repairer or other

qualified service shop as soon as possi-

ble. After use of liquid sealant, make sure

to replace the tire pressure warning

valve and transmitter when repairing or

replacing the tire. (



P.400)

If the EV system will not start

Reasons for the EV system not
starting vary depending on the situ-
ation. Check the following and per-
form the appropriate procedure:

Contact any authorized Lexus
retailer or Lexus authorized
repairer, or any reliable repairer if
the problem cannot be repaired, or
if repair procedures are unknown.

The EV system will not start even
though the correct starting pro-
cedure is being followed.
(



P.224)

456

8-2. Steps to take in an emergency

such as electronic key battery
depletion or a blown fuse. However,
depending on the type of malfunc-
tion, an interim measure is available
to start the EV system. (



P.456)



There is a possibility that the tem-
perature of the traction battery is
extremely low (approximately
below -30°C [-22°F]). (



P.82,

225)

: It may not be possible to shift the shift

position from P.

One of the following may be the cause
of the problem:



The 12-volt battery may be dis-
charged. (



P.461)



The 12-volt battery terminal con-
nections may be loose or corroded.
(



P.394)

One of the following may be the cause
of the problem:



One or both of the 12-volt battery
terminals may be disconnected.
(



P.394)



The 12-volt battery may be dis-
charged. (



P.461)

Contact any authorized Lexus retailer or
Lexus authorized repairer, or any reliable
repairer if the problem cannot be repaired,
or if repair procedures are unknown.

When the EV system does not start,
the following steps can be used as an
interim measure to start the EV system
if the power switch is functioning nor-
mally.
Do not use this starting procedure
except in cases of emergency.

Set the parking brake.

Turn the power switch to ACC.

Press and hold the power switch for
about 15 seconds while depressing
the brake pedal firmly.

Even if the EV system can be started
using the above steps, the system may
be malfunctioning. Have the vehicle
inspected by any authorized Lexus
retailer or Lexus authorized repairer,
or any reliable repairer.

The interior lights and head-
lights are dim, or the horn does
not sound or sounds at a low vol-
ume.

The interior lights and head-
lights do not turn on, or the horn
does not sound.

Emergency start function

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