Lexus UX 300e (2022 year). Manual in english — page 25

425

8

8-1. Essential information

Wh
en

troubl
e ar
ises

it briefly 3 times or more in succes-
sion.

5

Stop the vehicle in a safe place by
the road.



If the door can be opened, open the
door and exit the vehicle.



If the door can not be opened, open
the window using the power win-
dow switch and ensure an escape
route.



If the window can be opened, exit
the vehicle through the window.



If the door and window cannot be
opened due to the rising water,
remain calm, wait until the water
level inside the vehicle rises to the
point that the water pressure inside
of the vehicle equals the water pres-
sure outside of the vehicle and then
open the door after waiting for the
rising water to enter the vehicle, and
exit the vehicle. When the outside
water level exceeds half the height
of the door, the door cannot be
opened from the inside due to water
pressure.

WARNING

Q

If the EV system has to be turned off

while driving

Power assist for the steering wheel will

be lost, making the steering wheel

heavier to turn. Decelerate as much as

possible before turning off the EV sys-

tem.

If the vehicle is submerged
or water on the road is rising

This vehicle is not designed to be
able to drive on roads that are
deeply flooded with water. Do not
drive on roads where the roads may
be submerged or the water may be
rising. It is dangerous to remain in
the vehicle, if it anticipated that the
vehicle will be flooded or set a drift.
Remain calm and follow the follow-
ing.

426

8-1. Essential information

Q

Water level exceeds the floor

When the water level exceeds the floor and

time has passed, the electrical equipment

will get damaged, the power windows will

not operate, the motor stops, and the vehi-

cle may not be able to get moving.

Q

Using an emergency escape hammer

*1

Laminated glass

*2

is used in the windshield

and front side windows on this vehicle.

Laminated glass cannot be shattered with
an emergency hammer

*1

.

*1

: Contact any authorized Lexus retailer or

Lexus authorized repairer, or any reli-
able repairer, or aftermarket accessory
manufacturer for further information
about an emergency hammer.

*2

: If equipped

Q

How to distinguish laminated glass

When looking from the cross-sectional

view point, laminated glass is two sheets of

glass pasted together.

Laminated glass

Tempered glass

WARNING

Q

Caution while driving

Do not drive on roads where the roads

may be submerged or the water may be

rising. Otherwise the vehicle may be

damaged and cannot move, as well as

become flooded and set a drift, which

may lead to death.

A

B

427

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

8-2.Steps to take in an emergency

If your vehicle needs to be
towed

If towing is necessary, we recom-
mend having your vehicle towed by
any authorized Lexus retailer or
Lexus authorized repairer, or any
reliable repairer or commercial
towing service, using a wheel-lift
type truck or flatbed truck.

Use a safety chain system for all
towing, and abide by all state/pro-
vincial and local laws.

WARNING

Observe the following precautions.

Failure to do so may result in death or

serious injury.

Q

When towing the vehicle

Be sure to transport the vehicle with the

front wheels raised or with all four wheels

raised off the ground. If the vehicle is

towed with the front wheels contacting

the ground, the drivetrain and related

parts may be damaged or electricity

generated by the operation of the motor

may cause a fire to occur depending on

the nature of the damage or malfunction.

Q

While towing

O

When towing using cables or chains,

avoid sudden starts, etc., which place

excessive stress on the towing eyelets,

cables or chains. The towing eyelets,

cables or chains may become dam-

aged, broken debris may hit people,

and cause serious damage.

O

Do not perform any of the following as

doing so may cause the parking lock

mechanism to engage, locking the

front wheels and possibly leading to an

accident resulting in death or serious

injury:

• Unfasten the driver’s seat belt and

open the driver’s door.

• Turn the power switch off.

Q

Installing towing eyelets to the vehi-

cle

Make sure that towing eyelets are

installed securely.

If not securely installed, towing eyelets

may come loose during towing.

NOTICE

Q

To prevent damage to the vehicle

when towing using a wheel-lift type

truck

O

Do not tow the vehicle from the rear

when the power switch is OFF. The

steering lock mechanism is not strong

enough to hold the front wheels

straight.

O

When raising the vehicle, ensure ade-

quate ground clearance for towing at

the opposite end of the raised vehicle.

Without adequate clearance, the vehi-

cle could be damaged while being

towed.

Q

To prevent damage to the vehicle

when towing with a sling-type truck

Do not tow with a sling-type truck, either

from the front or rear.

428

8-2. Steps to take in an emergency

In the following situations, it is not pos-
sible to be towed by another vehicle
using cables or chains, as the front
wheels may be locked due to the park-
ing lock. Contact any authorized Lexus
retailer or Lexus authorized repairer,
or any reliable repairer or commercial
towing service.



There is a malfunction in the shift
control system. (



P.226, 443)



There is a malfunction in the immo-
bilizer system. (



P.71)



There is a malfunction in the smart
entry & start system. (



P.458)



The 12-volt battery is discharged.
(



P.461)

The following may indicate a problem
with your transmission. Contact any
authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer or commercial towing service
before towing.



The EV system warning message is
shown on the multi-information dis-

play and the vehicle does not move.



The vehicle makes an abnormal
sound.



From the front

Release the parking brake.
Turn automatic mode off. (



P.235)



From the rear

Use a towing dolly under the front
wheels.

NOTICE

Q

To prevent damage to the vehicle

during emergency towing

Do not secure cables or chains to the

suspension components.

Situations when it is not possible
to be towed by another vehicle

Situations when it is necessary to
contact dealers before towing

Towing with a wheel-lift type
truck

429

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

When using a flat-bed truck to trans-
port the vehicle, use tire strapping
belts. Refer to the owner’s manual of
the flat-bed truck for the tire strapping
method.
In order to suppress vehicle movement
during transportation, set the parking
brake and turn the power switch off.

If a tow truck is not available in an
emergency, your vehicle may be tem-
porarily towed using cables or chains
secured to the emergency towing eye-
lets. This should only be attempted on
hard surfaced roads for short distances
at under 30 km/h (18 mph).
A driver must be in the vehicle to steer
and operate the brakes. The vehicle’s
wheels, drive train, axles, steering and
brakes must be in good condition.

To have your vehicle towed by another
vehicle, the towing eyelet must be
installed to your vehicle. Install the tow-
ing eyelet using the following proce-
dure.

1

Take out the towing eyelet.
(



P.446)

2

Remove the eyelet cover using a
flathead screwdriver.

To protect the bodywork, place a rag

between the screwdriver and the vehicle

body as shown in the illustration.

3

Insert the towing eyelet into the
hole and tighten partially by hand.

NOTICE

Q

Towing with a sling-type truck

Do not tow with a sling-type truck to pre-

vent body damage.

Using a flatbed truck

Emergency towing

Emergency towing procedure

430

8-2. Steps to take in an emergency

4

Tighten down the towing eyelet
securely using a hard metal bar.

5

Securely attach cables or chains to
the towing eyelet.

Take care not to damage the vehicle body.

6

Enter the vehicle being towed and
start the EV system.

If the EV system does not start, turn the

power switch to ON.

7

Shift the shift position to N and
release the parking brake.

Turn automatic mode off. (



P.235)

Q

While towing

If the EV system is off, the power assist for

the brakes and steering will not function,

making steering and braking more difficult.

Q

Wheel nut wrench

Wheel nut wrench can be purchased at any

authorized Lexus retailer or Lexus autho-

rized repairer, or any reliable repairer.



Fluid leaks under the vehicle
(Water dripping from the air condi-
tioning after use is normal.)



Flat-looking tires or uneven tire
wear



Excessive tire squeal when corner-
ing



Strange noises related to the sus-
pension system



Other noises related to the EV sys-
tem



Stumbling or running roughly



Appreciable loss of power



Vehicle pulls heavily to one side
when braking



Vehicle pulls heavily to one side
when driving on a level road

If you think something is
wrong

If you notice any of the following
symptoms, your vehicle probably
needs adjustment or repair. Con-
tact any authorized Lexus retailer
or Lexus authorized repairer, or
any reliable repairer as soon as pos-
sible.

Visible symptoms

Audible symptoms

Operational symptoms

431

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises



Loss of brake effectiveness, spongy
feeling, pedal almost touches the
floor

432

8-2. Steps to take in an emergency

Q

Brake system warning light (warning buzzer)

Q

12-volt battery charging system warning light

*

(warning buzzer)

*

: This light illuminates on the multi-information display.

If a warning light turns on or a warning buzzer sounds

Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by any authorized Lexus retailer or Lexus autho-
rized repairer, or any reliable repairer.

Actions to the warning lights or warning buzzers

Warning light

Details/Actions

(red)

Indicates that:



The brake fluid level is low; or



The brake system is malfunctioning



Immediately stop the vehicle in a safe place and contact any autho-
rized Lexus retailer or Lexus authorized repairer, or any reliable
repairer. Continuing to drive the vehicle may be dangerous.

Warning light

Details/Actions

Indicates a malfunction in the 12-volt battery charging system



Immediately stop the vehicle in a safe place and contact any autho-
rized Lexus retailer or Lexus authorized repairer, or any reliable
repairer.

433

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

Q

Tire pressure warning light

Q

Brake system warning light (warning buzzer)

Q

SRS warning light (warning buzzer)

Q

ABS warning light (warning buzzer)

Warning light

Details/Actions

When the light comes on after blinking for approximately 1 minute:
Malfunction in the tire pressure warning system



Have the system checked by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer.

When the light comes on:
Low tire inflation pressure such as



Natural causes



Flat tire



Immediately stop the vehicle in a safe place. (



P.438)

Warning light

Details/Actions

(yellow)

Indicates a malfunction in:



The regenerative braking system;



The electronically controlled brake system; or



The parking brake system



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

Warning light

Details/Actions

Indicates a malfunction in:



The SRS airbag system; or



The seat belt pretensioner system



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

Warning light

Details/Actions

Indicates a malfunction in:



The ABS; or



The brake assist system



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

434

8-2. Steps to take in an emergency

Q

Electric power steering system warning light (warning buzzer)

Q

Slip indicator

Q

Parking brake indicator

Q

Brake hold operated indicator (warning buzzer)

Warning light

Details/Actions

(red)

or

(yellow)

Indicates a malfunction in the EPS (Electric Power Steering) system



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

Warning light

Details/Actions

Indicates a malfunction in:



The VSC system;



The TRC system; or



The hill-start assist control system



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the parking brake system



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

Warning light

Details/Actions

(flashes)

Indicates a malfunction in the brake hold system



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

435

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

Q

Lexus parking assist-sensor OFF indicator (warning buzzer)

Q

RCTA OFF indicator (warning buzzer)

Q

PKSB OFF indicator (warning buzzer)

Warning light

Details/Actions

(flashes)

(if equipped)

When a buzzer sounds:
Indicates a malfunction in the Lexus parking assist-sensor function



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.



Follow the instructions displayed on the multi-information display.
(



P.308)

Warning light

Details/Actions

(flashes)

(if equipped)

When a buzzer sounds:
Indicates a malfunction in the RCTA (Rear Crossing Traffic Alert) func-
tion



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

When a buzzer does not sound:
Indicates that the rear bumper around the radar sensor is covered with
dirt, etc. (



P.301)



Follow the instructions displayed on the multi-information display.
(P.314)

Warning light

Details/Actions

(flashes)

(if equipped)

When a buzzer sounds:
Indicates a malfunction in the PKSB (Parking Support Brake) system



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.



Follow the instructions displayed on the multi-information display.
(



P.322)

436

8-2. Steps to take in an emergency

Q

Traction battery charge warning light (warning buzzer)

Q

Driver’s and front passenger’s seat belt reminder light (warning buzzer)

*

*

: Driver’s and front passenger’s seat belt warning buzzer:

The driver’s and front passenger’s seat belt warning buzzer sounds to alert the driver and
front passenger that his or her seat belt is not fastened. If the seat belt is unfastened, the
buzzer sounds intermittently for a certain period of time after the vehicle reaches a certain
speed.

Q

Rear passengers’ seat belt reminder lights

*1

(warning buzzer)

*2

*1

: This light illuminates on the multi-information display. Regardless of whether or not a

rear passenger is present, if the power switch is turned to ON with the rear seat belts
unfastened, this light will also illuminate for a certain period of time.

*2

: Rear passengers’ seat belt warning buzzer:

The rear passengers’ seat belt warning buzzer sounds to alert the rear passenger that his
or her seat belt is not fastened. If the seat belt is unfastened, the buzzer sounds intermit-
tently for a certain period of time after the vehicle reaches a certain speed.

Warning light

Details/Actions

Indicates that the remaining charge of the traction battery is low and
charging is required
When the outside temperature is low, this light may turn on earlier than
usual to urge the driver to charge the traction battery early.



Charge the traction battery. (



P.109)

Warning light

Details/Actions

Warns the driver and/or front passenger to fasten their seat belts



Fasten the seat belt.
If the front passenger’s seat is occupied, the front passenger’s seat
belt also needs to be fastened to make the warning light (warning
buzzer) turn off.

Warning light

Details/Actions

Warns the rear passengers to fasten their seat belts



Fasten the seat belt.

437

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

Q

Brake Override System warning light/Drive-Start Control warning
light/PKSB warning light

*

(warning buzzer)

*

: This light illuminates on the multi-information display.

Q

LTA indicator

*

(warning buzzer)

*

: This light illuminates on the multi-information display.

Warning light

Details/Actions

When a buzzer sounds:



Brake Override System is malfunctioning;



Drive-Start Control is operating;



Drive-Start Control is malfunctioning; or



Parking Support Brake function (static objects) (if equipped) is oper-
ating



Follow the instructions displayed on the multi-information display
and head-up display (if equipped).

When a buzzer does not sound:
Brake Override System is operating



Release the accelerator pedal and depress the brake pedal.

Warning light

Details/Actions

(orange)

Indicates a malfunction in the LTA (Lane Tracing Assist)



Follow the instructions displayed on the multi-information display.
(



P.278)

438

8-2. Steps to take in an emergency

Q

PCS warning light (warning buzzer)

Q

Warning buzzer

In some cases, the buzzer may not be heard

due to being in a noisy location or audio

sound.

Q

Front passenger detection sensor, seat

belt reminder and warning buzzer

O

If luggage is placed on the front passen-

ger seat, the front passenger detection

sensor may cause the warning light to

flash and the warning buzzer to sound

even if a passenger is not sitting in the

seat.

O

If a cushion is placed on the seat, the sen-

sor may not detect a passenger, and the

warning light may not operate properly.

Q

Electric power steering system warning

light (warning buzzer)

When the 12-volt battery charge becomes

insufficient or the voltage temporarily

drops, the electric power steering system

warning light may come on and the warning

buzzer may sound.

Q

When the tire pressure warning light

comes on

Inspect the tires to check if a tire is punc-

tured.

If a tire is punctured:



P.444

If none of the tires are punctured:

Turn the power switch off then turn it to

ON. Check if the tire pressure warning

light comes on or blinks.



If the tire pressure warning light blinks for

approximately 1 minute then stays on

There may be a malfunction in the tire pres-

sure warning system. Have the vehicle

inspected by any authorized Lexus retailer

or Lexus authorized repairer, or any reli-

able repairer immediately.



If the tire pressure warning light comes

on

1

After the temperature of the tires has

lowered sufficiently, check the inflation

pressure of each tire and adjust them to

the specified level.

2

If the warning light does not turn off

even after several minutes have

elapsed, check that the inflation pres-

sure of each tire is at the specified level

and perform initialization. (



P.401)

Q

The tire pressure warning light may

come on due to natural causes

The tire pressure warning light may come

on due to natural causes such as natural air

Warning light

Details/Actions

(flashes or illumi-

nates)

When a buzzer sounds simultaneously:
Indicates a malfunction has occurred in the PCS (Pre-Collision Sys-
tem).



Have the vehicle inspected by any authorized Lexus retailer or
Lexus authorized repairer, or any reliable repairer immediately.

When a buzzer does not sound:
The PCS (Pre-Collision System) has become temporarily unavailable,
corrective action may be necessary.



Follow the instructions displayed on the multi-information display.
(



P.260, 442)

If the PCS (Pre-Collision System) or VSC (Vehicle Stability Control)
system is disabled, the PCS warning light will illuminate.



P.268

439

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

leaks and tire inflation pressure changes

caused by temperature. In this case, adjust-

ing the tire inflation pressure will turn off the

warning light (after a few minutes).

Q

Conditions that the tire pressure warn-

ing system may not function properly



P.399

WARNING

Q

If both the ABS and the brake system

warning lights remain on

Stop your vehicle in a safe place immedi-

ately and contact any authorized Lexus

retailer or Lexus authorized repairer, or

any reliable repairer.

The vehicle will become extremely

unstable during braking, and the ABS

system may fail, which could cause an

accident resulting in death or serious

injury.

Q

When the electric power steering

system warning light comes on

When the light comes on yellow, the

assist to the power steering is restricted.

When the light comes on red, the assist

to the power steering is lost and handling

operations of the steering wheel become

extremely heavy.

When steering wheel operations are

heavier than usual, grip the steering

wheel firmly and operate it using more

force than usual.

Q

If the tire pressure warning light

comes on

Be sure to observe the following precau-

tions.

Failure to do so could cause a loss of

vehicle control and result in death or

serious injury.

O

Stop your vehicle in a safe place as

soon as possible. Check and adjust the

tire inflation pressure immediately.

O

If the tire pressure warning light comes

on even after tire inflation pressure

adjustment, it is probable that you have

a flat tire. Check the tires. If a tire is flat,

repair the flat tire by using emergency

tire puncture repair kit and have the

flat tire repaired by the nearest autho-

rized Lexus retailer or Lexus autho-

rized repairer, or any reliable repairer.

O

Avoid abrupt maneuvering and brak-

ing.

If the vehicle tires deteriorate, you

could lose control of the steering

wheel or the brakes.

Q

If a blowout or sudden air leakage

should occur

The tire pressure warning system may

not activate immediately.

NOTICE

Q

To ensure the tire pressure warning

system operates properly

Do not install tires with different specifi-

cations or makers, as the tire pressure

warning system may not operate prop-

erly.

440

8-2. Steps to take in an emergency

If a warning message is dis-
played

The multi-information display
shows warnings of system malfunc-
tions, incorrectly performed opera-
tions, and messages that indicate a
need for maintenance. When a
message is shown, perform the cor-
rection procedure appropriate to
the message.

Multi-information display

Follow the instructions of the message
on the multi-information display.
If any of the warning messages are
shown again after the following actions
have been performed, contact any
authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.

A