Lexus UX 300e (2022 year). Manual in english — page 27

457

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

Q

AC charging port lid

1

Remove the cover inside the lug-
gage compartment by inserting a
flathead screwdriver.

When removing the cover, to prevent

damage, cover the tip of the screwdriver

with a rag.

2

Pull the lever (white).

If you lose your keys

New genuine mechanical keys can
be made by any authorized Lexus
retailer or Lexus authorized
repairer, or any reliable repairer
using another mechanical key and
the key number stamped on your
key number plate. Keep the plate in
a safe place such as your wallet, not
in the vehicle.

NOTICE

Q

When an electronic key is lost

If the electronic key remains lost, the risk

of vehicle theft increases significantly.

Visit any authorized Lexus retailer or

Lexus authorized repairer, or any reli-

able repairer immediately with all

remaining electronic keys and the card

key (if equipped) that were provided with

your vehicle.

If the charging port lids can-
not be opened

If the charging port lids cannot be
opened when using the normal pro-
cedure, the following procedure
can be used to open the charging
port lids.

Opening the charging port lids

458

8-2. Steps to take in an emergency

Q

DC charging port lid

1

Remove the cover inside the lug-
gage compartment by inserting a
flathead screwdriver.

When removing the cover, to prevent

damage, cover the tip of the screwdriver

with a rag.

2

Pull the lever (black).

Q

When the electronic key does not work

properly

O

Make sure that the smart entry & start

system has not been deactivated using

the Remote Touch or at any authorized

Lexus retailer or Lexus authorized

repairer, or any reliable repairer. If it is

off, turn the function on.

O

Check if battery-saving mode is set. If it is

set, cancel the function. (



P.197)

Q

Unlocking the driver’s door

Use the mechanical key to perform the
following operations. (



P.176)

If the electronic key does not
operate properly

If communication between the
electronic key and vehicle is inter-
rupted (



P.197) or the electronic

key cannot be used because the
battery is depleted, the smart entry
& start system and wireless remote
control cannot be used. In such
cases, the doors can be opened and
the EV system can be started by fol-
lowing the procedure below.

NOTICE

Q

In case of a smart entry & start system

malfunction or other key-related

problems

Take your vehicle with all the electronic

keys provided with your vehicle, includ-

ing the card key, to any authorized Lexus

retailer or Lexus authorized repairer, or

any reliable repairer.

Locking and unlocking the
driver’s door

459

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

1

Insert the mechanical key while
pulling on the driver’s door handle.

2

Unlock the door.

3

Remove the key, return the handle,
and then pull the handle again.

Q

Locking the driver’s door

1

With the door open, push down the
inside lock button.

2

Close the door while pulling the
door handle.

Q

Key linked functions

The opening and closing of the power win-

dows and moon roof (if equipped) can be

linked to key operation by a customized

setting.

1

Closes the windows and moon roof
(turn and hold)

2

Opens the windows and moon roof
(turn and hold)

WARNING

Q

When using the mechanical key and

operating the power windows or

moon roof (if equipped)

Operate the power window or moon

roof after checking to make sure that

there is no possibility of any passenger

having any of their body parts caught in

the window or moon roof.

Also, do not allow children to operate the

wireless remote control or mechanical

key. It is possible for children and other

passengers to get caught in the power

window or moon roof.

460

8-2. Steps to take in an emergency

1

Depress the brake pedal.

2

Touch the Lexus emblem side of
the electronic key to the power
switch.

When the electronic key is detected, a

buzzer sounds and the power switch will

turn to ON.

When the smart entry & start system is

deactivated in customization setting, the

power switch will turn to ACC.

3

Firmly depress the brake pedal and
check that

is shown on the

multi-information display.

4

Press the power switch.

In the event that the EV system still cannot

be started, contact any authorized Lexus

retailer or Lexus authorized repairer, or

any reliable repairer.

Q

Stopping the EV system

Set the parking brake, shift the shift position

to P and press the power switch as you nor-

mally do when stopping the EV system.

Q

Electronic key battery

As the above procedure is a temporary

measure, it is recommended that the elec-

tronic key battery be replaced immediately

when the battery is depleted. (



P.414)

Q

Alarm (if equipped)

Using the mechanical key to lock the doors

will not set the alarm system.

If a door is unlocked using the mechanical

key when the alarm system is set, the alarm

may be triggered. (



P.73)

Q

Changing power switch modes

Release the brake pedal and press the

power switch in step

3

above.

The EV system does not start and modes

will be changed each time the switch is

pressed. (



P.227)

Starting the EV system

461

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

If you have a set of jumper (or booster)
cables and a second vehicle with a 12-
volt battery, you can jump start your
vehicle by following the steps below.

1

Confirm that the electronic key is
being carried.

When connecting the jumper (or booster)

cables, depending on the situation, the

alarm may activate and the doors may

lock. (



P.74)

2

Open the hood (



P.389).

3

Open the positive (+) battery ter-
minal cover while pushing the side

of the cover as shown in the illustra-
tion.

If the 12-volt battery is dis-
charged

The following procedures may be
used to start the EV system if the
vehicle’s 12-volt battery is dis-
charged.
You can also call any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.

Restarting the EV system

462

8-2. Steps to take in an emergency

4

Connect a positive jumper cable clamp to

on your vehicle and connect the

clamp on the other end of the positive cable to

on the second vehicle. Then,

connect a negative cable clamp to

on the second vehicle and connect the

clamp at the other end of the negative cable to

.

Positive (+) battery terminal (your vehicle)

Positive (+) battery terminal (second vehicle)

Negative (-) battery terminal (second vehicle)

Solid, stationary, unpainted metallic point away from the battery and any mov-
ing parts as shown in the illustration

5

Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the 12-volt battery of your
vehicle.

6

Open and close any of the doors of
your vehicle with the power switch
OFF.

7

Maintain the engine speed of the
second vehicle and start the EV
system of your vehicle by turning
the power switch to ON.

8

Make sure the “READY” indicator
comes on. If the indicator light does
not come on, contact any autho-
rized Lexus retailer or Lexus autho-
rized repairer, or any reliable
repairer.

9

Once the EV system has started,
remove the jumper cables in the
exact reverse order from which
they were connected.

Once the EV system starts, have the
vehicle inspected at any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer as

A

B

C

D

A
B
C
D

463

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

soon as possible.

Q

Starting the EV system when the 12-volt

battery is discharged

The EV system cannot be started by push-

starting.

Q

To prevent 12-volt battery discharge

O

Turn off the headlights, the air condition-

ing system, the audio system, etc. while

the EV system is off.

O

Turn off any unnecessary electrical com-

ponents when the vehicle is running at a

low speed for an extended period, such

as in heavy traffic.

Q

Charging the 12-volt battery

The electricity stored in the 12-volt battery

will discharge gradually even when the

vehicle is not in use, due to natural dis-

charge and the draining effects of certain

electrical appliances. If the vehicle is left for

a long time, the 12-volt battery may dis-

charge, and the EV system may be unable

to start. (The 12-volt battery recharges

automatically while the EV system is oper-

ating.)

Q

When the 12-volt battery is removed or

discharged

O

Information stored in the ECU is cleared.

When the 12-volt battery is depleted,

have the vehicle inspected at any autho-

rized Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

O

In some cases, it may not be possible to

unlock the doors using the smart entry &

start system when the 12-volt battery is

discharged. Use the wireless remote

control or the mechanical key to lock or

unlock the doors.

O

The EV system may not start on the first

attempt after the 12-volt battery has

recharged but will start normally after the

second attempt. This is not a malfunction.

O

The power switch mode is memorized by

the vehicle. When the 12-volt battery is

reconnected, the system will return to the

mode it was in before the 12-volt battery

was discharged. Before disconnecting

the 12-volt battery, turn the power switch

off.

If you are unsure what mode the power

switch was in before the 12-volt battery

discharged, be especially careful when

reconnecting the 12-volt battery.

O

If the 12-volt battery discharges, it may

not be possible to shift the shift position to

other positions. In this case, the vehicle

cannot be towed without lifting both front

wheels because the front wheels will be

locked. (



P.428)

O

The power back door (if equipped) must

be initialized. (



P.190)

Q

When replacing the 12-volt battery

O

Use a 12-volt battery that conforms to

European regulations.

O

Use a 12-volt battery that the case size is

same as the previous one (LN0), 20

hour rate capacity (20HR) is equivalent

(35Ah) or greater, and performance rat-

ing (CCA) is equivalent (240A) or

greater.

• If the sizes differ, the 12-volt battery can-

not be properly secured.

• If an improper 12-volt battery is used, bat-

tery performance may decrease and the

EV system may not be able to restart.

• If the 20 hour rate capacity is low, even if

the time period where the vehicle is not

used is a short time, the 12-volt battery

may discharge and EV system may not

be able to start.

For details, consult with at any authorized

Lexus retailer or Lexus authorized repairer,

or any reliable repairer as soon as possible.

WARNING

Q

When removing the 12-volt battery

terminals

Always remove the negative (-) terminal

first. If the positive (+) terminal contacts

any metal in the surrounding area when

the positive (+) terminal is removed, a

spark may occur, leading to a fire in addi-

tion to electrical shocks and death or

serious injury.

464

8-2. Steps to take in an emergency

WARNING

Q

Avoiding 12-volt battery fires or

explosions

Observe the following precautions to

prevent accidentally igniting the flamma-

ble gas that may be emitted from the 12-

volt battery:

O

Make sure each jumper cable is con-

nected to the correct terminal and that

it is not unintentionally in contact with

any other than the intended terminal.

O

Do not allow the other end of the

jumper cable connected to the “+” ter-

minal to come into contact with any

other parts or metal surfaces in the

area, such as brackets or unpainted

metal.

O

Do not allow the + and - clamps of the

jumper cables to come into contact

with each other.

O

Do not smoke, use matches, cigarette

lighters or allow open flame near the

12-volt battery.

Q

12-volt battery precautions

The 12-volt battery contains poisonous

and corrosive acidic electrolyte, while

related parts contain lead and lead com-

pounds. Observe the following precau-

tions when handling the 12-volt battery:

O

When working with the 12-volt battery,

always wear safety glasses and take

care not to allow any battery fluids

(acid) to come into contact with skin,

clothing or the vehicle body.

O

Do not lean over the 12-volt battery.

O

In the event that battery fluid (acid)

comes into contact with the skin or

eyes, immediately wash the affected

area with water and seek medical

attention.

Place a wet sponge or cloth over the

affected area until medical attention

can be received.

O

Always wash your hands after han-

dling the 12-volt battery and other bat-

tery-related parts.

O

Do not allow children near the 12-volt

battery.

Q

When replacing the 12-volt battery

O

When the vent plug is close to the hold

down clamp, the battery fluid (acid)

may leak.

O

For information regarding battery

replacement, contact any authorized

Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

NOTICE

Q

When handling jumper cables

When connecting the jumper cables,

ensure that they do not become entan-

gled in the cooling fans.

465

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

1

Stop the vehicle in a safe place and
turn off the air conditioning system.

2

Leave the EV system operating and
carefully lift the hood.

3

Check if the cooling fans are oper-
ating.
If the fans are operating:
Wait until the “EV System over-
heated Output power reduced”
message disappears and then stop
the EV system. If the message does
not disappear, call any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
If the fans are not operating:
Stop the EV system immediately
and call any authorized Lexus
retailer or Lexus authorized
repairer, or any reliable repairer.

4

After the EV system has cooled
down, inspect the hoses and radia-
tor core (radiator) for any leaks.

Radiator

Cooling fans

If a large amount of coolant leaks, immedi-
ately contact any authorized Lexus retailer
or Lexus authorized repairer, or any reli-
able repairer.

5

The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.

Reservoir

“F” line

“L” line

If your vehicle overheats

When “EV System overheated
Output power reduced” is shown
on the multi-information display,
your vehicle may be overheating.

Correction procedures

A
B

A
B
C

466

8-2. Steps to take in an emergency

6

Add coolant if necessary.

Water can be used in an emergency if

coolant is unavailable.

Have the vehicle inspected at the near-
est authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer as soon as possible.

WARNING

Q

To prevent an accident or injury when

inspecting under the hood of your

vehicle

Observe the following precautions.
Failure to do so may result in serious

injury such as burns.

O

If steam is seen coming from under the

hood, do not open the hood until the

steam has subsided. The motor com-

partment may be very hot.

O

Keep hands and clothing (especially a

tie, a scarf or a muffler) away from the

fans. Failure to do so may cause the

hands or clothing to be caught, result-

ing in serious injury.

O

Do not loosen the coolant reservoir

cap while the EV system and radiator

are hot. High temperature steam or

coolant could spray out.

NOTICE

Q

When adding power control unit

coolant

Add coolant slowly after the EV system

has cooled down sufficiently. Adding

cool coolant to a hot EV system too

quickly can cause damage to the EV sys-

tem.

Q

To prevent damage to the cooling

system

Observe the following precautions:

O

Avoid contaminating the coolant with

foreign matter (such as sand or dust,

etc.).

O

Do not use any coolant additive.

467

8

8-2. Steps to take in an emergency

Wh
en

troubl
e ar
ises

1

Stop the EV system. Set the park-
ing brake and shift the shift position
to P.

2

Remove the mud, snow or sand
from around the front wheels.

3

Place wood, stones or some other
material under the front wheels to
help provide traction.

4

Restart the EV system.

5

Shift the shift position to D or R and
release the parking brake. Then,
while exercising caution, depress
the accelerator pedal.

Q

When it is difficult to free the vehicle

Press the

switch to turn off TRC.

(



P.329)

If the vehicle becomes stuck

Carry out the following procedures
if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:

Recovering procedure

WARNING

Q

When attempting to free a stuck vehi-

cle

If you choose to push the vehicle back

and forth to free it, make sure the sur-

rounding area is clear to avoid striking

other vehicles, objects or people. The

vehicle may also lunge forward or lunge

back suddenly as it becomes free. Use

extreme caution.

Q

When shifting the shift position

Be careful not to shift the shift position

with the accelerator pedal depressed.

This may lead to unexpected rapid accel-

eration of the vehicle that may cause an

accident resulting in death or serious

injury.

NOTICE

Q

To avoid damage to the transmission

and other components

O

Avoid spinning the tires and depress-

ing the accelerator pedal more than

necessary.

O

If the vehicle remains stuck even after

these procedures are performed, the

vehicle may require towing to be

freed.

9

469

9

Vehic

le spe

cif

ic

at

ion
s

Vehicle specifications

9-1. Specifications

Maintenance data. . . . . .

470

9-2. Customization

Customizable features . . ...

475

9-3. Initialization

Items to initialize . . . . . .

489

470

9-1. Specifications

9-1.Specifications

*1

: Overall width not including parts

Outside rear view mirrors

*2

: Unladen vehicle

*3

: Vehicles with 215/60R17 tires

*4

: Vehicles with 225/50R18 tires

Q

Vehicle identification number

The vehicle identification number
(VIN) is the legal identifier for your
vehicle.
This is the primary identification num-
ber for your Lexus. It is used in regis-
tering the ownership of your vehicle.
This number is on the top left of the
instrument panel.

This number is also on the manufac-
turer’s label.

Maintenance data

Dimensions and weights

Overall length

4495 mm (177.0 in.)

Overall width

*1

1840 mm (72.4 in.)

Overall height

*2

1545 mm (60.8 in.)

Wheelbase

2640 mm (103.9 in.)

Tread

Front

1558 mm (61.3 in.)

*3

1548 mm (60.9 in.)

*4

Rear

1560 mm (61.4 in.)

*3

1550 mm (61.0 in.)

*4

Gross vehicle mass

2245 kg (4949 lb.)

Maximum permissi-
ble axle capacity

Front

1270 kg (2800 lb.)

Rear

1270 kg (2800 lb.)

Vehicle identification

471

9

9-1. Specifications

Vehic

le spe

cif

ic

at

ion
s

This number is also stamped under the
right-hand front seat.

Q

Motor model type and motor num-
ber

The motor model type and the motor
number are stamped on the motor as
shown.

Electric motor (traction motor)

Model

4KM

Type

Permanent magnet synchronous motor

Maximum output

150 kW

Maximum torque

300 N•m (30.6 kgf•m, 221.3 ft•lbf)

Traction battery

Type

Lithium-ion battery

Voltage

3.7 V/cell

Capacity

153 Ah

Quantity

288 cells

Nominal voltage

355.2 V

472

9-1. Specifications

Q

Power control unit

*

: The coolant capacity is the quantity of reference.

If replacement is necessary, contact any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.

Q

12-volt battery

Cooling system

Capacity

*

2.5 L (2.6 qt., 2.3 Imp.qt.)

Coolant type

Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-

silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid tech-
nology

Do not use plain water alone.

Heater system

Capacity

1.4 L (1.5 qt., 1.2 Imp.qt.)

Coolant type

Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-

silicate, non-amine, non-nitrite, and non-borate
coolant with long-life hybrid organic acid tech-
nology

Do not use plain water alone.

Electrical system

Specific gravity reading at 20°C
(68°F):

1.250 or higher
If the specific gravity is lower than the standard value,
charge the 12-volt battery.

Charging rates:

Quick charge
Slow charge

15 A max.
5 A max.

473

9

9-1. Specifications

Vehic

le spe

cif

ic

at

ion
s

*

: The fluid capacity is a reference quantity.

If replacement is necessary, contact any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.

*1

: Minimum pedal clearance when depressed with a force of 300 N (31 kgf, 66 lbf) while

the EV system is operating.

*2

: Make sure to confirm that the brake system warning light (yellow) does not illuminate. (If

the brake system warning light illuminates, refer to P.433)

Transmission

Fluid capacity

*

4.3 L (4.5 qt., 3.8 Imp.qt.)

Fluid type

Toyota Genuine ATF WS

NOTICE

Q

Transmission fluid type

Using transmission fluid other than the above type may cause abnormal noise or vibra-

tion, or ultimately damage the transmission of your vehicle.

Brakes

Pedal clearance

*1

109 mm (4.29 in.) Min.

Pedal free play

1.0 - 6.0 mm (0.04 - 0.24 in.)

Parking brake indicator

*2

When pushing the parking brake switch for 1 to 4
seconds: comes on
When pulling the parking brake switch for 1 to 4
seconds: turns off

Fluid type

SAE J1703 or FMVSS No. 116 DOT 3,
SAE J1704 or FMVSS No. 116 DOT 4

Steering

Free play

Less than 30 mm (1.2 in.)