Lexus RZ450E (2023 year). Manual in english

531

9-5. If a door cannot be opened or locked

When trouble

ari

ses

The child-protector lock may be
engaged.
Open the door from outside the vehi-
cle and disengage the child-protector
lock. (



P.68)



Vehicles with a power back door:

Using a flathead screwdriver,
remove the cover.

To protect the cover, place a rag between

the flathead screwdriver and the cover as

shown in the illustration.

Loosen the screw and turn back the
cover.

If the rear doors cannot be
opened from the inside

If the back door cannot be
opened

The back door can be unlocked
from the inside.

532

9-5. If a door cannot be opened or locked

Using a screwdriver, push the lever.

When installing, reverse the steps
listed.



Vehicles without a power back
door:

Using a flathead screwdriver,
remove the cover.

To protect the cover, place a rag between

the flathead screwdriver and the cover as

shown in the illustration.

Turn the cover.

Using a screwdriver, push the lever.

When installing, reverse the steps
listed.

533

9-6. If the EV system cannot be used normally

When trouble

ari

ses

9-6.If the EV system cannot be used normally

Open the hood. (



P.433)

Pull the ring section horizontally
toward the inside of the vehicle.

After the unlocking operation is com-

pleted, push the ring part back to its origi-

nal position until it clicks into place.

Emergency release lever

■

When unlocking with the emergency

release lever

Be sure to observe the following.

●

Do not apply excessive force to the ring

part

●

Do not pull horizontally too much

Use only in an emergency.

If the problem persists, have the vehicle

inspected by your Lexus dealer immedi-

ately if this occurs.

If the charging port lid 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 lid.

534

9-6. If the EV system cannot be used normally

If the problem is not resolved after performing the above remedies, the AC
charging cable (including plug cord) may be damaged. Stop charging immediately
and contact your Lexus dealer.

If AC charging cannot be performed normally

The power source indicator on the CCID (Charging Circuit Interrupt-
ing Device) does not illuminate, even though the plug is connected to an
external power source

Cause

Remedy

Plug is not properly connected to
socket

Check that the plug is properly connected to the
socket.

Power is out

After power is restored, carry out the charging pro-
cedure again.

Remote switch is off

If the remote switch is equipped, turn the switch on.

Building breaker is tripped and
power is cut off

Check that the breaker is connected and if there is
no malfunction, check if the vehicle can be charged
through another socket.
If another socket is not available, contact your Lexus
dealer.
If charging is possible, the first socket may have a
malfunction. Contact the building or facility man-
ager, or an electrician.

The error warning indicator on the CCID (Charging Circuit Interrupt-
ing Device) flashes

Cause

Remedy

Electrical leakage detection function
or self-diagnostic function operates
and power is cut off.

When the voltage is insufficient, the error warning
indicator may flash when there is noise interference.
Remove the plug from the socket and connect it to a
proper power source. (



P.541)

If charging does not start, immediately stop charging
and contact your Lexus dealer.

535

9-6. If the EV system cannot be used normally

When trouble

ari

ses

Charging indicator of the charging port does not illuminate, even
though AC charging connector is connected

Cause

Remedy

The plug is not properly connected
to the socket

Check that the plug is properly connected to the
socket.

AC charging connector is not
securely connected to AC charging
inlet

Check the connection status of the AC charging
connector.



When connecting the AC charging connector,
make sure not to touch the latch release button.
Insert the charging connector securely until you
hear a click. The charging connector may not be
connected correctly if the latch release button is
pressed while inserting.



After connecting the AC charging connector,
check that the latch release button is not pressed
and the charging indicator of the charging port is
turned on.

If the charging indicator of the charging port does
not illuminate, even though the charging connector
is securely connected, there may be a malfunction in
the system. Immediately stop charging and contact
your Lexus dealer.

Traction battery is already fully
charged

When the traction battery is fully charged, AC
charging is not performed.

The remaining charge of the traction
battery exceeds the set upper limit of
the charge capacity

Change to a higher upper limit setting than the cur-
rent remaining charge capacity and perform
charging again. (



P.52)

The charger does not operate

Please contact the facility manager when there is a
problem with charger.

536

9-6. If the EV system cannot be used normally

: Refer to P.34 for details regarding charging indicator of the charging port illumination

and flashing.

When the charging indicator on the charging port is blinking and
charging cannot be carried out

Cause

Remedy

When charging indicator of the charging
port flashes

: Charging schedule is regis-

tered

When you wish to charge according to the
charging schedule, wait until the set time.
To start charging, set “Charge now” to on.
(



P.63)

When charging indicator of the charging
port rapidly flashes

: Malfunction occurred

in an external power source or the vehicle

When a door is opened with the power
switch off, a message is displayed on the
multi-information display. Follow instructions
displayed. (



P.483)

537

9-6. If the EV system cannot be used normally

When trouble

ari

ses

If DC charging cannot be performed normally

DC charging does not start

Cause

Remedy

The DC charging connector is not properly
connected to the vehicle.

Check the connection status of the DC
charging connector and be sure that it is
locked.
If the DC charging does not start, even
though the DC charging connector is
securely connected, there may be a mal-
function with the DC charger or charging
system.



If there is a malfunction with the DC char-
ger, contact the charging station manager.



If there is not a malfunction with the DC
charger, there may be a malfunction in the
system. Contact your Lexus dealer.

The DC charging connector is not securely
locked.

Error is detected by the DC charger or vehi-
cle’s system check.

There may be a malfunction with the DC
charger or charging system.



If there is a malfunction with the DC char-
ger, contact the facility manager.



If there is not a malfunction with the DC
charger, there may be a malfunction in the
system. Contact your Lexus dealer.



If the EV system cannot be started, con-
tact your Lexus dealer.

The DC charger power goes off.

Contact the charging station manager and
check the power status.

Traction battery is already fully charged

When the traction battery is fully charged,
DC charging cannot be performed.

The remaining charge of the traction battery
exceeds the set upper limit of the charge
capacity

Change to a higher upper limit setting than
the current remaining charge capacity and
perform charging again. (



P.52)

538

9-6. If the EV system cannot be used normally

AC charging connector is also connected.

DC charging and AC charging cannot be
performed together.

The EV system is started.

When the EV system is started, DC
charging cannot be started.
Also, if the shift position is not in P, DC
charging cannot be performed.

When DC charging is interrupted

Cause

Remedy

Cause

Remedy

The timer for the DC charger operates.

Depending on the type of the DC charger,
the timer may be set to stop charging after a
certain time.
Check with the charging station manager.

The power for the DC charger is off.

Check the power status of the DC charger. If
there are uncertainties with the power status,
contact the charging station manager.

The temperature of the traction battery is
extremely high or low.

DC charging may not be performed in
extremely high or extremely low tempera-
ture environments. Charge the traction bat-
tery after the temperature has been
stabilized.

Error is detected by the DC charger or vehi-
cle’s system check.

There may be a malfunction with the DC
charger or charging system.



If there is a malfunction with the DC char-
ger, contact the facility manager.



If there is not a malfunction with the DC
charger, there may be a malfunction in the
system. Contact your Lexus dealer.



If the EV system cannot be started, con-
tact your Lexus dealer.

High temperature of charging related parts

If the temperature of charging related parts
is high, DC charging may not be possible.
Wait for a while and then charge again.

The electrical components such as the air
conditioning system stop operating while the
traction battery is approximately fully
charged.

Keep the electrical components such as the
air conditioning system in the OFF state, and
then perform the charging procedure again.

539

9-6. If the EV system cannot be used normally

When trouble

ari

ses

EV system does not start after DC charging

Cause

Remedy

System check is not completed properly
after charging.

Do a system check following the procedures
on P.492. If the system check cannot be
completed properly even after these proce-
dures are performed, contact your Lexus
dealer.

The DC charging connector is still con-
nected.

For safety, the EV system cannot be started
when the DC charging connector is con-
nected. (



P.46)

Remove the DC charging connector imme-
diately after the charging is completed.

The DC charging system is malfunctioning



Depending on the type of malfunction, the
EV system can be started after closing the
charging port lid.



If the EV system cannot be started, con-
tact your Lexus dealer.

540

9-6. If the EV system cannot be used normally

The charging connector can be
unlocked by operating the emergency
release wire.

Open the hood. (



P.433)

Pull the emergency release wire.

The charging connector is unlocked and

can be removed.

After unlocking the charging con-
nector, fix the handle of the emer-

gency release wire to the
attachment.

If the charging connector
cannot be disconnected from
the charging inlet

If the charging connector cannot
be unlocked

541

9-6. If the EV system cannot be used normally

When trouble

ari

ses

: If equipped

The indicators on the CCID (Charging Circuit Interrupting Device) use a combi-
nation of different statuses (not illuminated, illuminated or flashing) to inform the
user of internal malfunctions.

When the error warning indicator is illuminated or flashing, temporarily remove the plug
from the socket and then reconnect it to check if the error indicator turns off.
When the power indicator is illuminated and the error warning indicator is not illuminated,
charging can be performed.
In other situations, follow instructions in the following table:

If the indicator on the CCID (Charging Circuit Interrupting
Device) of the AC charging cable

illuminates or flashes

Status

Power indicator

Error warning

indicator

Details/Correction procedure

Charging system
error

Not illuminated

Not illuminated
or illuminated

An electrical leakage is detected
and charging is canceled, or there
is a malfunction in the AC
charging cable.



Consult your Lexus dealer

Illuminated

Flashes

Plug tempera-
ture detection
malfunction

Flashes

There is a malfunction in the plug
temperature detection part.



Consult your Lexus dealer

Plug tempera-
ture increase
detection

Flashes

Not illuminated

An increase in the temperature of
the plug is detected due to an
improper connection between the
socket and plug.



Check that the plug is securely
connected to the socket. While
the power indicator is flashing,
charging is performed with lim-
ited current.

542

9-6. If the EV system cannot be used normally

AC charging
cable life span
notice

Illuminated

Flashes

The number of charges using the
AC charging cable is nearing the
end of its usable life span.



Consult your Lexus dealer

AC charging
cable life span

Illuminated

The number of charges using the
AC charging cable has exceeded
its usable number of charges.



Consult your Lexus dealer

Status

Power indicator

Error warning

indicator

Details/Correction procedure

543

9-6. If the EV system cannot be used normally

When trouble

ari

ses

: For the setting procedure for the clock,

refer to the “MULTIMEDIA OWNER’S
MANUAL”.

If the charging schedule
function does not operate
normally

Cannot charge at desired time

Cause

Remedy

The vehicle calendar
or clock is not set
correctly.

Check the calendar
setting and set it to
the correct date.

AC charging con-
nector is not con-
nected to vehicle

Before using the
charging schedule,
connect the AC
charging connector.

AC charging con-
nector was con-
nected after set time

Connect the AC
charging connector
before the time set
in “Start at set time”.
When the charging
mode is set to “Start
and stop at set
times”, the traction
battery will charge
even if the start time
has passed, if the
AC charging con-
nector is connected
before the stop time.

Charging starts, even though
charging schedule is registered

Cause

Remedy

“Charge now” is set
to on

When charging
according to the
charging schedule,
set “Charge now” to
off. (



P.63)

Charging schedule
is set to off

Check that charging
schedule is not set to
off. (



P.62)

AC charging con-
nector was removed
and reinserted while
charging indicator
of the charging port
was flashing

If the AC charging
connector is
removed and rein-
serted while the
charging indicator is
flashing, the
charging schedule is
canceled. Tempo-
rarily remove the
AC charging con-
nector, and then
reconnect it.

544

9-6. If the EV system cannot be used normally

My Room Mode
was operated

When My Room
Mode is operated,
the system will start
charging, even if the
charging schedule is
registered. To carry
out charging using
the charging sched-
ule, stop My Room
Mode, and then
reconnect the AC
charging cable.

Cause

Remedy

Outside tempera-
ture is low and trac-
tion battery
warming control
operated (



P.43)



When traction
battery warming
control operates,
the charging
schedules are
ignored and
charging starts. In
order to protect
the traction bat-
tery, allow
charging to con-
tinue.



After removing
and installing the
12-volt battery, the
charging sched-
ule setting may
become invalid
due to the initial
setting of the trac-
tion battery
warming control
system even when
the outside tem-
perature is not
low.

In this case, after a
few runs, the sys-
tem’s initial settings
will be completed
and the charging
schedule settings
will take effect
when the outside
temperature is not
low.

Cause

Remedy

546

9-7. If an indicator on an interior feature illuminates or flashes

9-7.If an indicator on an interior feature illuminates or flashes

: If equipped

If the indicator light illuminates alternatively in orange and green, refer to P.228.

When the wireless charger operation indicator light (on the
charging tray) flashes

When the wireless charger indicator light continuously flashes once per
second (orange / green)

Operation indicator light

Suspected causes/Handling method

Charging tray side

Center Display side

Orange (Flashing
repeatedly once
every second)

Gray

Vehicle to wireless charger communica-
tion failure



If the EV system is started, stop and then

restart the EV system.

If the power switch is in ACC, start the EV
system.(



P.138)

Green (Flashing
repeatedly once
every second)

Disappear

Wireless charger and multimedia system
communication failure



If the EV system is started, stop and then

restart the EV system.

If the power switch is in ACC, start the EV
system.(



P.138)

When the wireless charger indicator light continuously flashes 3 times
quickly (orange)

Cause

Remedy

The following causes are possible.



Foreign matter detected: If a metallic for-
eign object is detected in the charge area,
the overheat prevention function of the
metallic foreign object will operated



Portable device not aligned correctly: If
the charging coil of a portable device is
not properly positioned on the charging
area, the overheat prevention function will
operated



Remove the foreign object from the
charge area.



Remove the portable device from the
charging tray, check that the operation
indicator light changes back to green, and
then place the portable device so that it is
near the center of the charging tray.

Also, if a case or cover is installed to the por-
table device, remove it.

549

9-8. If the vehicle cannot move

n t

ise

If towing is necessary, we recommend
having your vehicle towed by your
Lexus dealer or a 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/provincial and local laws.



From the front

Use a towing dolly under the rear
wheels.

Towing with a tow truck

Towing with a tow truck

WARNING

Be sure to transport the vehicle with all

four wheels raised off the ground. If the

vehicle is towed with the tires contacting

the ground, the drivetrain or related

parts may be damaged, the vehicle may

fly off the truck, or electricity generated

by the operation of the motor may cause

a fire to occur depending on the nature

of the damage or malfunction.

NOTICE

■

To prevent damage to the vehicle

when towing using a wheel-lift type

truck

When raising the vehicle, ensure ade-

quate ground clearance for towing at the

opposite end of the raised vehicle. With-

out adequate clearance, the vehicle

could be damaged while being towed.

■

Towing with a sling-type truck

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

vent body damage.

551

9-8. If the vehicle cannot move

n t

ise

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 18 mph (30 km/h ).
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.

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 your Lexus dealer or com-
mercial towing service.



There is a malfunction in the shift
control system. (



P.494)



There is a malfunction in the immo-

bilizer system. (



P.94)



There is a malfunction in the smart
access system with push-button
start. (



P.522)



The 12-volt battery is discharged.
(



P.526)

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.

Take out the towing eyelet.

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.

Towing with another vehicle

If towing is necessary, we recom-
mend having your vehicle towed by
your Lexus dealer or a 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/provincial and
local laws.

Emergency towing

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

Emergency towing procedure

WARNING

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 acci-

dent resulting in death or serious injury:

●

Unfasten the driver’s seat belt and

open the driver’s door.

●

Turn the power switch off.

552

9-8. If the vehicle cannot move

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

Tighten down the towing eyelet
securely using a wheel bolt
wrench

or hard metal bar.

: Wheel bolt wrench can be purchased at

your Lexus dealer.

■

Wheel bolt wrench

Wheel bolt wrench can be purchased at

your Lexus dealer.

Securely attach cables or chains to
the towing eyelet.

Take care not to damage the vehicle body.

Enter the vehicle being towed and
start the EV system.

If the EV system does not start, turn the

power switch to ON.

■

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.

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

Turn auto mode of the parking brake off.

WARNING

When installing towing eyelets to the

vehicle, make sure to securely install

them to the specified positions.

If not securely installed, towing eyelets

may come loose during towing.

NOTICE

To prevent damage to the vehicle during

emergency towing, do not secure cables

or chains to the suspension components.

WARNING

Do not turn the power switch off while

towing the vehicle with another vehicle.

This may lead to an accident as the front

wheels will be locked by the parking lock.

WARNING

When towing, avoid sudden starts, etc.,

which place excessive stress on the tow-

ing eyelets, cables or chains. The towing

eyelets, cables or chains may become

damaged, broken debris may hit people,

and cause serious damage.

553

9-8. If the vehicle cannot move

n t

ise

Stop the EV system. Set the parking
brake and shift the shift position to
P.

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

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

Restart the EV system.

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

If it is difficult to free the vehicle,
press the

switch and turn the

TRAC off.

If the vehicle remains stuck even after

these procedures are performed, the vehi-

cle may require towing to be freed.

Getting unstuck from mud,
sand, or snow

WARNING

■

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.

■

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

●

Avoid spinning the tires and depress-

ing the accelerator pedal more than

necessary.

●

If the vehicle remains stuck even after

these procedures are performed, the

vehicle may require towing to be freed.

NOTICE

■

Emergency hook

When stuck in a snow drift, etc. and you

are unable to drive out, the emergency

hook can be used to pull the vehicle out

with another vehicle. It cannot be used to

tow another vehicle, nor is it designed for

any type of towing.

554

9-9. If you think something is wrong

9-9.If you think something is wrong

The following symptoms are abnormal.



Fluid leaks under the vehicle

Water dripping from the air conditioning
after use is normal.



Flat-looking tires or uneven tire
wear

Contact your Lexus dealer as soon as
possible. Your vehicle probably needs
adjustment or repair.

The following sounds are abnormal
sounds.



Excessive tire squeal when corner-
ing



Strange noises related to the sus-
pension system



Other noises related to the EV sys-
tem

Contact your Lexus dealer as soon as
possible. Your vehicle probably needs
adjustment or repair.

If a vehicle abnormality is
found

If abnormal sounds are emit-
ted from the vehicle

555

9-9. If you think something is wrong

When trouble

ari

ses

The following symptoms are abnormal.



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



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

Contact your Lexus dealer as soon as
possible. Your vehicle probably needs
adjustment or repair.

If the vehicle behaves abnor-
mally

556

9-10. Items to check before contacting a dealership

9-10.Items to check before contacting a dealership

Check if the window lock switch is on.
(



P.100)

If the window lock switch is on, the
power windows other than that for the
driver’s seat cannot be operated.
Turn the window lock switch off.
When the jam protection function or
catch protection function operates
unusually and the side window cannot
be opened or closed, perform the fol-
lowing operations with the power win-
dow switch of that door. (



P.98)



Stop the vehicle. With the power
switch in ON, within 4 seconds of
the jam protection function or catch
protection function activating, con-
tinuously operate the power win-
dow switch in the one-touch closing
direction or one-touch opening
direction so that the side window
can be opened and closed.



If the side window cannot be
opened and closed even when per-
forming the above operations, per-
form the procedure for function
initialization. (



P.556)

Turn the power switch to ON.

Pull and hold the power window
switch in the one-touch closing

direction and completely close the
side window. (



P.99)

Release the power window switch
for a moment, resume pulling the
switch in the one-touch closing
direction, and hold it there for
approximately 6 seconds or more.

Press and hold the power window
switch in the one-touch opening
direction. After the side window is
completely opened, continue hold-
ing the switch for an additional 1
second or more.

Release the power window switch
for a moment, resume pushing the
switch in the one-touch opening
direction, and hold it there for
approximately 4 seconds or more.

Pull and hold the power window
switch in the one-touch closing
direction again. After the side win-
dow is completely closed, continue
holding the switch for a further 1
second or more.

If you release the switch while the window

is moving, start again from the beginning.
If the window reverses and cannot be fully

closed or opened, have the vehicle

inspected by your Lexus dealer.

If the windows do not open
or close by operating the
power window switches

Initializing the jam protection
function/catch protection func-
tion

557

9-10. Items to check before contacting a dealership

n t

ise

In the following situations, power will
be turned off due to the automatic
power off function.



The vehicle is left in ACC or ON
(the EV system is not operating) for
more than 20 minutes with the shift
position in P.



The 12-volt battery is low with the
shift position is in P and the power
switch is in ACC or ON (the EV
system is not operating).

Next time when starting the EV sys-
tem, operate the EV system for
approximately 5 minutes to recharge
the 12-volt battery.
Do not leave the vehicle with the
power switch in ACC or ON for long
periods of time when the EV system is
not operating.

The following may indicate that your
vehicle is overheating.



The high coolant temperature warn-
ing light comes on.



A loss of EV system power is experi-
enced. (For example, the vehicle
speed does not increase.)



“EV System overheated Output
power reduced” is displayed on the
multi-information display.



Steam comes out from under the
hood.

The power switch is turned
off automatically

If your vehicle overheats

NOTICE

The radiator coolant is exclusive for radi-

ator usage. Damage may occur when

water or any other type of coolant is

used, so never use any other fluid. When

there is no “Toyota Genuine Traction Bat-

tery Coolant”, immediately contact your

Lexus dealer.

558

9-10. Items to check before contacting a dealership

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

Leave the EV system operating and
carefully lift the hood.

Check if the cooling fan is operat-
ing.
If the fan is operating: Wait until the
“EV System overheated Output
power reduced” message disap-
pears and then stop the EV system.
If the message does not disappear,
call your Lexus dealer. If the fan is
not operating: Stop the EV system
immediately and call your Lexus
dealer.

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

If a large amount of coolant leaks, immedi-

ately contact your Lexus dealer.

Radiator
Cooling fan

The high coolant temperature
warning light comes on or “EV
System overheated Output
power reduced” is displayed on
the multi-information display

WARNING

■

To prevent an accident or injury when

inspecting under the hood of your

vehicle

Observe the following precautions. Fail-

ure to do so may result in serious injury

such as burns.

●

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.

●

Keep hands and clothing (especially a

tie, a scarf or a muffler) away from the

fan. Failure to do so may cause the

hands or clothing to be caught, result-

ing in serious injury.

●

Do not loosen the coolant reservoir

cap while the EV system and radiator

are hot. High temperature steam or

coolant could spray out.

NOTICE

■

When adding 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.

■

To prevent damage to the cooling sys-

tem

Observe the following precautions:

●

Avoid contaminating the coolant with

foreign matter (such as sand or dust,

etc.).

●

Do not use water or any other coolant

when refilling coolant. Also, do not use

any additive agents for the coolant.

559

9-10. Items to check before contacting a dealership

When trouble

ari

ses

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

Reservoir
“MAX” line
“MIN” line

If the coolant is insufficient, replen-
ish with “Toyota Genuine Traction
Battery Coolant”.

If you do not have “Toyota Genuine Trac-

tion Battery Coolant”, contact your Lexus

dealer.

Remove the bolt.

Open the reservoir cap

Have the vehicle inspected at the near-
est your Lexus dealer.

If any of the electrical components do
not operate, a fuse may have blown.
If this happens, check and replace the
fuses as necessary. (



P.560)

A
B
C

If electrical components can-
not be used or do not oper-
ate when a switch is
operated

560

9-10. Items to check before contacting a dealership

Turn the power switch off.

Confirm that the charging connector is not

connected. Also, do not use the Remote

Air Conditioning System during the proce-

dure.

Open the fuse box cover.



Motor compartment

Push the tab in and lift the lid off.



Left side instrument panel

Remove the lid.

Remove the fuse.

Only type A fuse can be removed using the

pullout tool.

Check if the fuse is blown.

Replace the blown fuse with a new fuse of

an appropriate amperage rating. The

amperage rating can be found on the fuse

box lid.

If a light does not illuminate

Checking and replacing fuses

WARNING

Observe the following precautions. Fail-

ure to do so may cause damage to the

vehicle, possibly leading to a fire or injury.

●

Never use a fuse of a higher amperage

rating than specified, or use any other

object in place of a fuse.

●

Always use a genuine Lexus fuse or

equivalent. Never replace a fuse with a

wire, even as a temporary fix.

●

Do not modify the fuses or fuse boxes.

●

Never check or replace the fuses in

the fuse box near the inverter with

converter assembly, as there are high

voltage parts and wiring near the fuse

box.

Doing so may cause electric shock,

resulting in death or serious injury.

NOTICE

Have the cause of electrical overload

determined and repaired by your Lexus

dealer as soon as possible.

561

9-10. Items to check before contacting a dealership

When trouble

ari

ses



Type A

Normal fuse
Blown fuse



Type B

Normal fuse
Blown fuse



Type C

Normal fuse
Blown fuse

■

After a fuse is replaced

●

When installing the lid, make sure to

engage the claw securely.

●

If the lights do not turn on even after the

fuse has been replaced, a bulb may need

replacement.

●

If the replaced fuse blows again, have the

vehicle inspected by your Lexus dealer.

■

If there is an overload in a circuit

The fuses are designed to blow, protecting

the wiring harness from damage.

■

When replacing light bulbs

Lexus recommends that you use genuine

Lexus products designed for this vehicle.
Because certain bulbs are connected to cir-

cuits designed to prevent overload,

non-genuine parts or parts not designed for

this vehicle may be unusable.

If any lights burn out, have it replaced
by your Lexus dealer.

■

LED Lights

The lights consist of a number of LEDs. If

any of the LEDs burn out, take your vehicle

to your Lexus dealer to have the light

replaced.

■

Condensation build-up on the inside of

the lens

Temporary condensation build-up on the

inside of the headlight lens does not indi-

cate a malfunction. Contact your Lexus

dealer for more information in the following

situations:

●

Large drops of water have built up on the

inside of the lens.

●

Water has built up inside the headlight.

A
B

Light bulbs

Lexus RZ450E (2023 year). Manual in english - page 17