Lexus NX450H+ (2024 year). Manual in english

Power indicator

Error warning indi-

cator

Status

Cause/Correction

procedure

Illuminated

Flashes

AC charging cable
life span notice

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

Illuminated

AC charging cable
life span

The number of
charges using the
AC charging cable
has exceeded its
usable number of
charges.
Consult your Lexus
dealer.

9-8. If the plug-in hybrid system cannot be used normally

727

When tr

ouble arises

If the charging schedule function does not operate normally

Cannot charge at desired time

Cause

Remedy

Vehicle clock is not prop-
erly adjusted

Check the clock settings and adjust it to the proper
time.

The vehicle calendar is not
set correctly.

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

AC charging cable is not
connected to vehicle

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

Incorrect charging mode
selected

Check the charging mode setting.
When the charging mode is [Start at set time],
charging starts at the set time, but when it is [De-
parture time], charging is completed by the set time
(The charging start time is automatically controlled
by the system).

Cannot change [Next charging event] from smartphone application

Cause

Remedy

Smartphone is outside
its coverage area

Check the signal strength. If the smartphone is outside
its coverage area, move to a place with a better signal.

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.

Charging schedule is set to
off

Check that charging schedule is not set to off.

*1 :

For the setting procedure for the clock, refer to the "MULTIMEDIA OWNER'S

MANUAL".

*2 :

It may be necessary to use a smartphone with a dedicated app to change the next

charging schedule.

9-8. If the plug-in hybrid system cannot be used normally

728

Cause

Remedy

Charging mode is set
to [Departure time] and
schedule departure time is
close to current time

When the system determines that there is no time to
finish charging by the set scheduled departure time,
it starts charging. Check the charging schedules.

AC charging cable was
removed and reinserted
while charging indicator
of the charging port was
flashing

If the AC charging cable is removed and reinserted
while the charging indicator is flashing, the charging
schedule is canceled. Temporarily remove the AC
charging cable, and then reconnect it.

My Room Mode was oper-
ated

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

Traction battery heater op-
erated

When the charging mode is set to [Departure time],
traction battery heater may operate before charging
starts. Check the status of the charging indicator of
the charging port.

Outside temperature is
low and hybridbattery
(traction battery) warming
control operated (Alaska
and Canada only)

When hybrid battery (traction battery) warming
control operates, the charging schedules are ignor-
ed and charging starts. In order to protect the hybrid
battery (traction battery), allow charging to contin-
ue.

Charging ends earlier than time set in [Departure time]

Cause

Remedy

Charging end time does not
match estimated end time due
to condition of power source or
outside temperature

If sudden changes in temperature or changes
in the condition of the power source occur
while charging, charging may end earlier than
the time estimated by the system.

9-8. If the plug-in hybrid system cannot be used normally

729

When tr

ouble arises

Charging is not complete, even though it is time set in [Departure time]

Cause

Remedy

Charging end time does not
match estimated end time due
to condition of power source or
outside temperature

If sudden changes in temperature or changes
in the condition of the power source occur
while charging, charging may end earlier than
the time estimated by the system.

Charging does not start, even though it is time set in[Start at set time]

Cause

Remedy

AC charging cable was connect-
ed after set time

Connect the AC charging cable before the
time set in [Start at set time].

9-8. If the plug-in hybrid system cannot be used normally

730

If an indicator on an interior feature illuminates or flashes

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)

Cause

Remedy

Poor communication be-
tween the vehicle and wire-
less charger.

If the hybrid system is operating, stop the hybrid
system and then restart it.
If the power switch is in ACC, start the hybrid
system.

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

Cause

Remedy

The following causes are possible.

●

Foreign matter detected: If a metal-
lic foreign object is detected in the
charge area, the overheat prevention
function will operate

●

Portable device not aligned correct-
ly: If the charging coil of a portable
device is not properly positioned on
the charging area, the overheat pre-
vention function of the charging coil
will operate

●

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 portable device, remove it.

When the wireless charger indicator light continuously flashes 4 times
quickly (orange)

Cause

Remedy

The temperature inside the
wireless charger may have
become too high.

Stop charging, remove the portable device from
the charging tray, and wait for the temperature
to decrease before attempting to begin charging
again.

* :

If equipped

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

731

When tr

ouble arises

Towing with a tow truck

NOTICE

■

To prevent damage to the vehicle when towing using a wheel-lift type truck

When raising the vehicle, ensure adequate ground clearance for towing at the opposite
end of the raised vehicle. Without adequate clearance, the vehicle could be damaged
while being towed.

Towing with a tow truck

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.

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

■

Towing with a sling-type truck

Do not tow with a sling-type truck to prevent body
damage.

9-10. If the vehicle cannot move

734

Towing with another vehicle

Emergency towing (vehicles with towing eyelet)

If a tow truck is not available in an emergency, your vehicle may be temporarily
towed using cables or chains secured to the emergency towing eyelets. 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.

Situations when it is not possible to be towed by another vehicle (vehi-
cles with towing eyelet)

In the following situations, it is not possible to be towed by another vehicle using
cables or chains, as the front wheels may be locked due to the parking lock.
Contact your Lexus dealer or commercial towing service.

●

There is a malfunction in the shift control system.

●

There is a malfunction in the immobilizer system.

●

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

(

→

P.691)

●

The 12-volt battery is discharged.

Emergency towing procedure (vehicles with towing eyelet)

To have your vehicle towed by another vehicle, the towing eyelet must be installed
to your vehicle. Install the towing eyelet using the following procedure.

9-10. If the vehicle cannot move

737

When tr

ouble arises

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 accident resulting in death
or serious injury:

●

Unfasten the driver’s seat belt and open the driver’s door.

●

Turn the power switch off.

Take out the flathead screwdriver and 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.

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

Tighten down the towing eyelet securely us-
ing a wheel bolt wrench or hard metal bar.

INFORMATION

■

Wheel bolt wrench

Wheel bolt wrench can be purchased at your Lexus dealer.

WARNING

When installing towing eyelets to the vehicle, make sure to securely install them to
the specified positions.

9-10. If the vehicle cannot move

738

WARNING

If not securely installed, towing eyelets may come loose during towing.

Securely attach cables or chains to the towing eyelet.

Take care not to damage the vehicle body.

NOTICE

To prevent damage to the vehicle during emergency towing, do not secure cables or
chains to the suspension components.

Enter the vehicle being towed and start the hybrid system.

If the hybrid system does not start, turn the power switch to ON.

INFORMATION

■

While towing

If the hybrid system is off, the power assist for the brakes and steering will not
function, making steering and braking more difficult.

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.

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

Turn auto mode of the parking brake off.

WARNING

When towing, 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.

9-10. If the vehicle cannot move

739

When tr

ouble arises

Getting unstuck from mud, sand, or snow

Stop the hybrid 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 hybrid system.

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

WARNING

●

When shifting the shift lever, do not shift it with the accelerator pedal depressed.
Doing so may lead to unexpected rapid acceleration of the vehicle that may cause
an accident.

●

If you choose to push the vehicle back and forth to free it, make sure the surround-
ing 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.

NOTICE

Avoid spinning the front wheels and depressing the accelerator pedal more than
necessary.
Doing so may damage the hybrid transmission and other components.

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 vehicle
may require towing to be freed.

9-10. If the vehicle cannot move

740

If you think something is wrong

If a vehicle abnormality is found

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

●

High engine coolant temperature warning light comes on.

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

9-11. If you think something is wrong

741

When tr

ouble arises

If abnormal sounds are emitted from the vehicle

Condition

Remedy

The following sounds are abnormal sounds.

●

Changes in exhaust sound

●

Excessive tire squeal when cornering

●

Strange noises related to the suspension system

●

Pinging or other noises related to the hybrid system

Contact your Lexus deal-
er as soon as possible.
Your vehicle probably
needs adjustment or re-
pair.

9-11. If you think something is wrong

742

If the vehicle behaves abnormally

The following symptoms are abnormal.

●

Engine misfiring or misses, 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.

9-11. If you think something is wrong

743

When tr

ouble arises

Items to check before contacting a dealership

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

Check if the window lock switch is on.
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
following operations with the power window switch of that door.

●

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

●

If the door window cannot be opened and closed even when performing the
above operations, perform the procedure for function initialization.

Initializing power window

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.

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 holding 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.

9-12. Items to check before contacting a dealership

744

Pull and hold the power window switch in the one-touch closing direction
again. After the side window 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 inspect-
ed by your Lexus dealer.

9-12. Items to check before contacting a dealership

745

When tr

ouble arises

The power switch is turned off automatically

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 hybrid 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 hybrid system is not operating).

Next time when starting the hybrid system, operate the hybrid 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 hybrid system is not operating.

9-12. Items to check before contacting a dealership

746

If your vehicle overheats

The following may indicate that your vehicle is overheating.

●

The high coolant temperature warning light comes on.

●

A loss of hybrid system power is experienced. (For example, the vehicle speed
does not increase.)

●

"Engine Coolant Temp High Stop in a Safe Place See Owner's Manual" is
displayed on the multi-information display.

●

"Hybrid System Overheated Output Power Reduced" is displayed on the multi-
information display.

●

Steam comes out from under the hood.

The high coolant temperature warning light comes on or "Engine Cool-
ant Temp High Stop in a Safe Place See Owner's Manual" is displayed
on the multi-information display

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

WARNING

After turning the hybrid system off, check that the "READY" indicator is off.
When the hybrid system is operating, the gasoline engine may automatically start,
or the cooling fan may suddenly operate even if the gasoline engine is stopped.
Also, it may operate for several minutes even after the power switch is turned off.
Do not touch or approach rotating parts such as the fan, which may lead to fingers
or clothing (especially a tie, a scarf or a muffler) getting caught, resulting in serious
injury.

If you do not see steam, carefully lift the hood.

If you see steam, carefully lift the hood after the steam subsides.

WARNING

When opening the hood, observe the following precautions.

●

If steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartment may be very hot.

9-12. Items to check before contacting a dealership

747

When tr

ouble arises

WARNING

●

Do not loosen the radiator cap and the coolant reservoir cap while the hybrid
system and radiator are hot. High temperature steam or coolant could spray
out.

After the hybrid system has cooled down sufficiently, inspect the hoses and
radiator core (radiator) for any leaks.

If a large amount of coolant has leaked, immediately contact your Lexus dealer.

Radiator

Cooling fan

Check that the coolant level is between the [FULL] and [LOW] lines on the
reservoir.

Reservoir

[FULL] line

[LOW] line

Radiator cap

Add coolant if necessary.

Water can be used in an emergency if coolant is unavailable.

NOTICE

■

When adding engine/power control unit coolant

Add coolant slowly after the hybrid system has cooled down sufficiently.

9-12. Items to check before contacting a dealership

748

NOTICE

Adding cool coolant to a hot hybrid system too quickly can cause damage to the
hybrid system.

■

To prevent damage to the cooling system

Observe the following precautions:

●

Avoid contaminating the coolant with foreign matter (such as sand, dust, etc.).

●

Do not use coolant additives.

Start the hybrid system and turn the air conditioning system on to check
that the radiator cooling fan operate and to check for coolant leaks from the
radiator or hoses.

The fan operates when the air conditioning system is turned on immediately after a
cold start.
Confirm that the fan is operating by checking the fan sound and air flow. If it is
difficult to check these, turn the air conditioning system on and off repeatedly. (The
fan may not operate in freezing temperatures.)

If the fan is not operating: Stop the hybrid system immediately and contact
your Lexus dealer.

If the fan is operating: Have the vehicle inspected at the nearest Lexus dealer.

Check if "Engine Coolant Temp High Stop in a Safe Place See Owner's
Manual" is displayed on the multi-information display.

If the message does not disappear: Stop the hybrid system and contact your Lexus
dealer.
If the message is not displayed: Have the vehicle inspected at the nearest Lexus
dealer.

9-12. Items to check before contacting a dealership

749

When tr

ouble arises

If a light does not illuminate

The following may be the cause:

●

The 12-volt battery may be discharged.

●

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

●

A fuse may have blown. Check the fuses.

Contact your Lexus dealer if the problem cannot be repaired, or if repair
procedures are unknown.

INFORMATION

■

Condensation build-up on the inside of a lens

Temporary condensation build-up on the inside of the headlight lens does not indicate
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.

Checking and replacing fuses

WARNING

Observe the following precautions. Failure 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.

Turn the power switch off.

Open the fuse box cover.

9-12. Items to check before contacting a dealership

751

When tr

ouble arises

▶

Engine compartment (Type A)

Push in the claw and remove the lid.

▶

Engine compartment (Type B)

Push in the claw and remove the lid.

▶

Left side instrument panel

Remove the lid.

▶

Luggage compartment (Type A)

Fold the deck board, remove the side board and cover, then remove the fuse box cover.

9-12. Items to check before contacting a dealership

752

▶

Luggage compartment (Type B)

Fold the deck board, remove the side board and cover, then remove the fuse box cover.

Remove the fuse.

Only some fuses can be removed using the pullout tool.

9-12. Items to check before contacting a dealership

753

When tr

ouble arises

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.

Normal fuse

Blown fuse

INFORMATION

■

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 a circuit is overloaded

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 circuits designed to prevent overload,
non-genuine parts or parts not designed for this vehicle may be unusable.

9-12. Items to check before contacting a dealership

754

Light bulbs

The difficulty level of replacement varies depending on the bulb. If necessary
bulb replacement seems difficult to perform, contact your Lexus dealer.For more
information about replacing other light bulbs, contact your Lexus dealer.

■

Replacing the following bulbs

If any of the lights listed below has burnt out, have it replaced by your Lexus dealer.

●

Headlight

●

Front position lights and daytime running lights

●

Front turn signal lights (LED type)

●

Side turn signal lights

●

Front side marker lights

●

Front fog lights

●

Cornering lights

●

Stop/tail lights

●

Rear side marker lights

●

Back-up light

●

Rear turn signal light

●

High mounted stoplight

●

License plate lights

INFORMATION

■

LED Lights

The lights other than the front turn signal lights (bulb type) each 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.

WARNING

Observe the following precautions related to replacing the bulbs.

●

Turn off the lights. Do not attempt to replace the bulb immediately after turning off the
lights.The bulbs become very hot and may cause burns.

●

Do not touch the glass portion of the light bulb with bare hands. When it is unavoidable
to hold the glass portion, use and hold with a clean dry cloth to avoid getting moisture
and oils on the bulb.Also, if the bulb is scratched or dropped, it may blow out or crack.

* :

If equipped

9-12. Items to check before contacting a dealership

755

When tr

ouble arises

WARNING

●

Fully install light bulbs and any parts used to secure them. Failure to do so may
result in heat damage, fire, or water entering the headlight unit. This may damage the
headlights or cause condensation to build up on the lens.

●

Do not attempt to repair or disassemble the light bulbs, connectors, electric circuits or
related parts.
Doing so may result in electric shock leading to death or serious injury.

●

To prevent damage or fire, make sure the bulbs are fully installed and securely locked
into each light unit.

●

Check the wattage of the bulb before installing it to prevent heat damage.

Bulb locations

Front turn signal light (bulb type)

Replacing the front turn signal lights (bulb type)

Before replacing, check the wattage of the light bulb to be replaced.

Turn the bulb base counterclockwise.

Remove the light bulb.

9-12. Items to check before contacting a dealership

756

Lexus NX450H+ (2024 year). Manual in english - page 23