Lexus RZ (2023 year). Manual in english

505

9-2. If a warning is indicated on the meter

When trouble

ises

●

If a tire is punctured: P.540

●

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 pressure warning system. Have the vehicle inspected
by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer
immediately.
• If the tire pressure warning light comes on
After the temperature of the tires has lowered sufficiently, check the inflation pressure of
each tire and adjust them to the specified level.
If the warning light does not turn off even after several minutes have elapsed, check that the
inflation pressure of each tire is at the specified level and perform the tire inflation pressure
setting procedure. (



P.477)

If the warning light does not turn off even after several minutes have elapsed since perform-
ing the tire inflation pressure setting procedure, have the vehicle inspected by any autho-
rized Lexus retailer or Lexus authorized repairer, or any reliable repairer as soon as
possible.

■

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 leaks

and tire inflation pressure changes caused by temperature. In this case, adjusting the tire

inflation pressure will turn off the warning light (after a few minutes).

WARNING

■

If the tire pressure warning light comes on

Be sure to observe the following precautions. Failure to do so could cause a loss of vehi-

cle control and result in death or serious injury.

●

Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure

immediately.

●

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.

●

Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose

control of the steering wheel or the brakes.

■

If a blowout or sudden air leakage should occur

The tire pressure warning system may not activate immediately.

506

9-2. If a warning is indicated on the meter

NOTICE

■

To ensure the tire pressure warning system operates properly

Do not install tires with different specifications or makers, as the tire pressure warning

system may not operate properly.

PCS warning light (warning buzzer)

Condition

Cause / Remedy

Indicates a malfunction in the PCS (Pre-Collision System).



Follow the instructions displayed on the display.

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

LTA indicator (warning buzzer)

Condition

Cause / Remedy

(yellow)

Indicates a malfunction in the LTA (Lane Tracing Assist).



Follow the instructions displayed on the display.

LDA indicator (warning buzzer)

Condition

Cause / Remedy

(yellow)

Indicates a malfunction in the LDA (Lane Departure Alert).



Follow the instructions displayed on the display.

PDA indicator (warning buzzer)

Condition

Cause / Remedy

(yellow)

Indicates a malfunction in the PDA (Proactive Driving Assist).



Follow the instructions displayed on the display.

507

9-2. If a warning is indicated on the meter

When trouble

ises

Dynamic radar cruise control indicator (warning buzzer)

Condition

Cause / Remedy

(yellow)

Indicates a malfunction in the dynamic radar cruise control.



Follow the instructions displayed on the display.

Cruise control indicator (warning buzzer)

Condition

Cause / Remedy

(yellow)

Indicates a malfunction in the cruise control.



Follow the instructions displayed on the display.

Speed Limiter indicator (warning buzzer)

Condition

Cause / Remedy

(yellow)

Indicates a malfunction in the speed limiter system.



Follow the instructions displayed on the display.

508

9-2. If a warning is indicated on the meter

Driving assist information indicator

Condition

Cause / Remedy

Indicates one of the following systems is malfunctioning.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



Automatic Rear Flashing Hazard Lights



Secondary Collision Brake (Rear Impacts while Stopped)



Follow the instructions displayed on the display.

Indicates one of the following systems is malfunctioning or disabled.



PKSB (Parking Support Brake)



RCD (Rear Camera Detection)



BSM (Blind Spot Monitor)



RCTA(Rear Crossing Traffic Alert)



Safe Exit Assist



Follow the instructions displayed on the display.

Lexus parking assist-sensor OFF indicator (warning buzzer)

Condition

Cause / Remedy

Indicates a malfunction in the Lexus parking assist-sensor function



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

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.

Slip indicator

Condition

Cause / Remedy

(illuminates)

Indicates a malfunction in:



The VSC system;



The TRC system;



The Trailer Sway Control; or



The hill-start assist control system



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

509

9-2. If a warning is indicated on the meter

When trouble

ises

Parking brake indicator

Condition

Cause / Remedy

(flashes)

It is possible that the parking brake is not fully engaged or released



Operate the parking brake switch once again.

This light comes on when the parking brake is not released. If the light
turns off after the parking brake is fully released, the system is operating
normally.
Indicates a malfunction in the parking brake system



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

Brake hold operated indicator (warning buzzer)

Condition

Cause / Remedy

(flashes)

Indicates a malfunction in the brake hold system



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

510

9-2. If a warning is indicated on the meter

■

Warning messages

The warning messages explained below may differ from the actual messages according to

operation conditions and vehicle specifications.

■

Warning buzzer

In some cases, the buzzer may not be heard due to being in a noisy location or audio sound.

If a warning message is displayed

The multi-information display shows warnings for system malfunctions and
incorrectly performed operations, and messages that indicate a need for
maintenance. When a message is displayed, perform the appropriate correc-
tive action for the message.

If a warning message is displayed again after the appropriate actions have
been performed, contact any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.

Additionally, if a warning light comes on or flashes at the same time that a
warning message is displayed, take the appropriate corrective action for the
warning light.

A message that indicates the need for visiting your Lexus dealer

Cause

Remedy

The system or part shown on the
multi-information display is malfunc-
tioning.

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

If a message that indicates the need for the rotary shifter operation is
displayed

Cause

Remedy

To prevent the rotary shifter from
being operated incorrectly or the
vehicle from moving unexpectedly, a
message that requires shifting the
shift position may be displayed on
the multi-information display.

Follow the instruction of the message and shift the
shift position.

511

9-2. If a warning is indicated on the meter

When trouble

ises

“EV system stopped Steering power low”

Cause

Remedy

This message is displayed if the EV
system is stopped while driving.

When steering wheel operations are heavier than
usual, grip the steering wheel firmly and operate it
using more force than usual.

“Auto Power OFF to Conserve Battery”

Cause

Remedy

Power was turned off due to the
automatic power off function.
(



P.150)

Next time when starting the EV system, operate the
EV system for approximately 5 minutes to recharge
the 12-volt battery.

“Shift Out of N Release Accelerator Before Shifting”

Cause

Remedy

The accelerator pedal has been
depressed when the shift position is
in N.

Release the accelerator pedal and change the shift
position to D or R.

“Press brake when vehicle is stopped EV system may overheat”

Cause

Remedy

The message may be displayed
when the accelerator pedal is
depressed to hold the vehicle while
the vehicle is stopped on an incline,
etc.

The EV system may overheat. Release the accelera-
tor pedal and depress the brake pedal.

512

9-2. If a warning is indicated on the meter

“12-Volt Battery Charging System Malfunction Stop in a Safe Place See
Owner's Manual”

Cause

Remedy

It may indicate a malfunction.

Immediately stop the vehicle and contact any
authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer. Continuing to drive
the vehicle may be dangerous.

“EV system overheated Output power reduced”

Cause

Remedy

This message may be displayed
when driving under severe operating
conditions. (For example, when driv-
ing up a long steep hill.)

Handling method: P.586

“Tyre Set Switching Incomplete Retry Tyre Set Registration See
Owner's Manual”

Cause

Remedy

The wheel set change could not be
completed.

Check which wheel set is installed and perform the
change procedure again from the beginning.
(



P.481)

“Maintenance Reqd. For Traction Battery At Your Dealer”

Cause

Remedy

The traction battery is scheduled to
be inspected or replaced.

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



Continuing to drive the vehicle without having the
traction battery inspected will cause the EV sys-
tem not to start.



If the EV system does not start, contact any
authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer immediately.

513

9-2. If a warning is indicated on the meter

When trouble

ises

: When stopping the vehicle, do not stop the EV system until the display message has

turned off.

: When stopping the vehicle, do not stop the EV system until the display message has

turned off.

“Headlight System Malfunction Visit Your Dealer”

Cause

Remedy

The system may be malfunctioning.

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

“AWD System Overheated Switching to 2WD Mode”

Cause

Remedy

AWD system is overheated.

Stop the vehicle in a safe place with the EV system
operating.

If the message disappears after a while, there is no
problem. If the message remains, have the vehicle
inspected by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer immedi-
ately.

“AWD System Overheated 2WD Mode Engaged”

Cause

Remedy

AWD system has been temporarily
released and switched to
front-wheel drive due to overheat-
ing.

Stop the vehicle in a safe place with the EV system
operating.

If the message disappears after a while, AWD sys-
tem will automatically recover. If the message
remains, have the vehicle inspected by any author-
ized Lexus retailer or Lexus authorized repairer, or
any reliable repairer immediately.

514

9-2. If a warning is indicated on the meter

“AWD System Malfunction 2WD Mode Engaged Visit Your Dealer”

Cause

Remedy

A malfunction occurs in the AWD
system.

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

“Smart Entry & Start System Malfunction See Owner's Manual”

Cause

Remedy

It may indicate a malfunction.

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

“Braking Power Low Stop in a Safe Place See Manual”

Cause

Remedy

It may indicate a malfunction.

Immediately stop the vehicle in a safe place and con-
tact any authorized Lexus retailer or Lexus author-
ized repairer, or any reliable repairer. Continuing to
drive the vehicle may be dangerous.

“New Key Registered Contact Your Dealer if You Did Not Register a
New Key”

Cause

Remedy

This message will be displayed each
time the driver’s door is opened
when the doors are unlocked from
the outside for approximately 10
days after a new electronic key has
been registered.

If this message is displayed but you have not had a
new electronic key registered, ask any authorized
Lexus retailer or Lexus authorized repairer, or any
reliable repairer to check if an unknown electronic
key (other than those in your possession) has been
registered.

515

9-2. If a warning is indicated on the meter

When trouble

ises

“Parking Brake Temporarily Unavailable”

Cause

Remedy

If the parking brake is operated
repeatedly over a short period of
time, the system may restrict opera-
tion to prevent overheating.

If this happens, refrain from operating the parking
brake. Normal operation will return after about 1
minute.

“EPB Activation Stopped Incompletely”

Cause

Remedy

Operate the parking brake switch. If
the message does not disappear
after operating the switch several
times, the system may be malfunc-
tioning.

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

“Parking Brake Unavailable”

Cause

Remedy

Operate the parking brake switch. If
the message does not disappear
after operating the switch several
times, the system may be malfunc-
tioning.

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

“Brake Hold Malfunction Press Brake to Deactivate Visit Your Dealer”

Cause

Remedy

The system may be malfunctioning.

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

516

9-2. If a warning is indicated on the meter

: Electricity is consumed when operating traction battery heater. Using My Room Mode

also consumes power.

“Charging Stopped Due to Pulled Charging Connector”

Cause

Remedy



AC charging connector is
removed while AC charging



After the traction battery is fully
charged, the AC charging con-
nector is removed while the trac-
tion battery is being recharged
again because electricity-con-
suming functions

have been used

and the remaining charge is now
reduced.

If the AC charging connector is disconnected dur-
ing AC charging, charging will be suspended. To
continue charging, reconnect the AC charging con-
nector.

AC charging connector is not
securely connected

Check the connection status of the AC charging
connector.



When connecting the AC charging connector,
insert the AC charging connector securely.



After connecting the AC charging connector,
check that the charging indicator of the charging
port is turned on.

If charging cannot be carried out, even though the
proper procedures were followed, have the vehicle
inspected by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.

AC charging connector was
unlocked while charging

When the AC charging connector is unlocked while
charging, charging stops. To continue charging,
reconnect the AC charging connector.

“Charging complete Limited charge due to battery temp”

Cause

Remedy

Charging was stopped to protect the
traction battery as it continued to
remain hot for a certain period of
time.

Allow the traction battery to cool down and perform
charging again if the charging amount has not
reached the desired amount.

517

9-2. If a warning is indicated on the meter

When trouble

ises

“Charging stopped Check charging source”

Cause

Remedy

Problem in power supply
from external power source

Check the following items.



Plug is not disconnected



Plug is securely inserted



Remote switch is not off



The circuit breaker has tripped



Extension cord is not used and electrical socket is not
overloaded



Connected to a dedicated power line



Electrical leakage has occurred or not

If there is no problem with any of the above items, there may
be a problem with the electrical socket of the building.
Contact an electrician and request an inspection. (Contact
the facility manager of the charging station when there is a
problem with charging station.)
If charging cannot be carried out, even though there is no
problem with the power source path, there may be a mal-
function in the system. Have the vehicle inspected by any
authorized Lexus retailer or Lexus authorized repairer, or
any reliable repairer.

AC charger has stopped
charging

Charging may be canceled by an interruption of power
supply depending on specifications of a charger. Refer to
the instructions provided with the charger.



When charging is stopped using the charger



Equipment with charging schedule function



Equipment that is not compatible with the charging
schedule function of the vehicle

Check if it is possible to charge with the AC charging cable
or other AC charger. If charging cannot be carried out,
even when using the AC charging cable or other AC
charger, consult any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.

AC charger is not compatible
with vehicle

Check if it is possible to charge with the AC charging cable
or other AC charger.
If charging cannot be carried out even when using the AC
charging cable or other AC charger, contact any author-
ized Lexus retailer or Lexus authorized repairer, or any reli-
able repairer.

518

9-2. If a warning is indicated on the meter

DC charger is not compatible
with the vehicle.

If the message above is displayed when DC charging has
not stopped operations, the DC charger may be damaged,
so do not use that DC charger. Check if it is possible to
charge with another DC charger.

The DC charger is malfunc-
tioning.

“Charging stopped High energy use See Owner's Manual”

Cause

Remedy

Power is being consumed by electri-
cal components of vehicle

Check the following items, and then carry out
charging again.



If the headlights and audio are turned on, turn
them off.



Turn the power switch off.

If charging cannot be carried out, even after per-
forming the above, the 12-volt battery may not be
sufficiently charged. Operate the traction battery
system for approximately 15 minutes or more to
charge the 12-volt battery.

“Charging system malfunction See Owner's Manual”

Condition

Cause / Remedy

Malfunction occurred in charging
system

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

“Check Charging System Close Charging Port Lid See Owner's Man-
ual”

Condition

Cause / Remedy

System check is not completed
properly after DC charging.

If the system check after DC charging is not com-
pleted successfully, the EV system will not start even
if the power switch is pressed while depressing the
brake pedal.
Perform a system check with the following proce-
dures. (



P.519)

Cause

Remedy

519

9-2. If a warning is indicated on the meter

When trouble

ises

■

Performing a system check

Be sure to engage the parking brake and then turn the power switch off.

Close the DC charging inlet cap, and then close the charging port lid.

Turn the power switch to ON.

Check if “Checking Charging System” is displayed on the multi-information display
Do not open the charging port lid while the charging system is checking.
When the system check is completed, the power switch automatically turns off.

Press the power switch while depressing the brake pedal.

The “READY” indicator will turn on.
Contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer

if the charging system check is done and the message on the multi-information display does

not go off.

“Charging Stopped Time Limit Reached”

Condition

Cause / Remedy

The DC charging is not completed
within the restricted time with DC
charger.



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



Depending on the condition of the vehicle, the
charging time may become longer than normal,
and the DC charging may not be completed
within the restricted time.



When the A/C, headlights, audio system, etc., are
turned on, the electricity consumption of the vehi-
cle will be increased. Perform the DC charging
after turning off all of the above.



The temperature of the traction battery may be
low. Perform the DC charging after warming up
the traction battery.

“Charging Stopped Check Charging Source or Vehicle”

Cause

Remedy

Malfunction occurred in connector
locking system.

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

520

9-2. If a warning is indicated on the meter

“Shift System Malfunction Shifting Unavailable Drive to a Safe Place
and Stop”

Cause

Remedy

There is a malfunction in the shift
control system.

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

“Shift System Malfunction Driving Unavailable”

Cause

Remedy

There is a malfunction in the shift
control system.

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

“Shift System Malfunction Apply Parking Brake Securely When Parking
See Owner's Manual”

Cause

Remedy

It may indicate a malfunction.

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

“P Switch Malfunction Apply Parking Brake Securely When Parking
See Owner's Manual”

Cause

Remedy

It may indicate a malfunction.

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

521

9-2. If a warning is indicated on the meter

When trouble

ises

“Shift System Unavailable Apply Parking Brake Securely When Parking
See Owner's Manual”

Cause

Remedy

It may indicate a malfunction.

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

“Shift System Malfunction See Owner's Manual”

Cause

Remedy

It may indicate a malfunction.

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

“Shift System Malfunction Stop in a Safe Place See Owner's Manual”

Cause

Remedy

It may indicate a malfunction.

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

“Key Battery Low Replace Key Battery”

Cause

Remedy

The electronic key has a low battery. Replace the electronic key battery. (



P.552)

522

9-2. If a warning is indicated on the meter

“System Malfunction Visit Your Dealer”

Cause

Remedy

Indicates one of the following systems is dis-
abled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist) (if

equipped)



AHB (Automatic High Beam) (if
equipped)



AHS (Adaptive High-beam System) (if
equipped)



Dynamic radar cruise control



Speed limiter



RSA (Road Sign Assist)



PDA (Proactive Driving Assist)



BSM (Blind Spot Monitor)



RCTA(Rear Crossing Traffic Alert)



Automatic Rear Flashing Hazard

Lights



Secondary Collision Brake (Rear

Impacts while Stopped)



Safe Exit Assist



Lexus parking assist-sensor



PKSB (Parking Support Brake)



RCD (Rear camera detection)

Have the vehicle inspected by any author-
ized Lexus retailer or Lexus authorized
repairer, or any reliable repairer immedi-
ately.

523

9-2. If a warning is indicated on the meter

When trouble

ises

“System Stopped See Owner's Manual”

Cause

Remedy

Indicates one of the following systems is dis-
abled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist) (if

equipped)



AHB (Automatic High Beam) (if
equipped)



AHS (Adaptive High-beam System) (if
equipped)



Dynamic radar cruise control



Speed limiter



RSA (Road Sign Assist)



PDA (Proactive Driving Assist)



BSM (Blind Spot Monitor)



RCTA (Rear Crossing Traffic Alert)



Automatic Rear Flashing Hazard

Lights



Secondary Collision Brake (Rear

Impacts while Stopped)



Safe Exit Assist



Lexus parking assist-sensor



PKSB (Parking Support Brake)



RCD (Rear camera detection)

Follow the following correction methods.



Check the voltage of the 12-volt battery



Check the sensors that the Lexus Safety
System + uses for foreign matter covering
them. Remove them if any. (



P.277)



Check if the back door is open.

524

9-2. If a warning is indicated on the meter

Indicates the sensors may not be operating
properly. (



P.280, 355, 372, 360, 425,

363, 384, 385, 376)



Check the rear bumper around the sen-
sors used by the BSM, RCTA, Secondary
Collision Brake (Rear Impacts while
Stopped), Automatic Rear Flashing Haz-
ard Lights, or Safe Exit Assist for foreign
matter covering them. Remove them if
any. (



P.355, 360)



Check the sensors including camera sen-
sors used by the Lexus parking assist-sen-
sor, or PKSB for foreign matter covering
them. Remove them if any. (



P.361)



When problems are solved and the sen-
sors are operational, this indication may
disappear by itself.

“System Stopped Front Camera Low Visibility See Owner's Manual”

Cause

Remedy

Indicates one of the following systems is dis-
abled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist) (if

equipped)



AHB (Automatic High Beam) (if
equipped)



AHS(Adaptive High-beam System) (if
equipped)



Dynamic radar cruise control



Speed limiter



RSA (Road Sign Assist)



PDA (Proactive Driving Assist)

Follow the following correction methods.



Using the windshield wipers, remove the
dirt or foreign matter from the windshield.



Using the air conditioning system, defog
the windshield.



Close the hood, remove any stickers, etc.
to clear the obstruction in front of the front
camera.

525

9-2. If a warning is indicated on the meter

When trouble

ises

“System Stopped Front Camera Out of Temp. Range Wait until Normal
Temperature”

Cause

Remedy

Indicates one of the following systems is dis-
abled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist) (if

equipped)



AHB (Automatic High Beam) (if
equipped)



AHS (Adaptive High-beam System) (if
equipped)



Dynamic radar cruise control



Speed limiter



RSA (Road Sign Assist)



PDA (Proactive Driving Assist)

Follow the following correction methods.



If the front camera is hot, such as after the
vehicle is parked in the sun, use the air
conditioning system to decrease the tem-
perature around the front camera



If a sunshade was used when the vehicle
was parked, depending on its type, the
sunlight reflected from the surface of the
sunshade may cause the temperature of
the front camera to become excessively
high



If the front camera is cold, such after the
vehicle is parked in an extremely cold
environment, use the air conditioning sys-
tem to increase the temperature around
the front camera

“System Stopped Front Radar Sensor Blocked Clean Radar Sensor”

Cause

Remedy

Indicates one of the following systems is dis-
abled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist) (if

equipped)



AHB (Automatic High Beam) (if
equipped)



AHS (Adaptive High-beam System) (if
equipped)



Dynamic radar cruise control



Speed limiter



PDA (Proactive Driving Assist)

Follow the following correction methods.



Check if there is any foreign matter
attached to the radar sensor or radar sen-
sor cover and clean them if necessary.
(



P.277)



This message may be displayed when
driving in an open area with few nearby
vehicles or structures, such as a desert,
grasslands, suburbs, etc.

The message may be cleared by driving the
vehicle in an area with structures, vehicles,
etc. nearby.

526

9-2. If a warning is indicated on the meter

“System Stopped Front Radar Sensor Out of Temp. Range Wait until
Normal Temperature”

Cause

Remedy

Indicates one of the following systems is dis-
abled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist) (if

equipped)



AHB (Automatic High Beam) (if
equipped)



AHS (Adaptive High-beam System) (if
equipped)



Dynamic radar cruise control



Speed limiter



PDA (Proactive Driving Assist)

The temperature of the radar sensor is out-
side of the operating range. Wait for the
temperature to become appropriate.

“System Stopped Front Radar In Self Calibration See Owner's Manual”

Cause

Remedy

Indicates one of the following systems is dis-
abled.



PCS (Pre-Collision System)



LDA (Lane Departure Alert)



LTA (Lane Tracing Assist)



LCA (Lane Change Assist) (if

equipped)



AHB (Automatic High Beam) (if
equipped)



AHS (Adaptive High-beam System) (if
equipped)



Dynamic radar cruise control



Speed limiter



PDA (Proactive Driving Assist)

Follow the following correction methods.



Check if there is any foreign matter
attached to the radar sensor or radar sen-
sor cover and clean them if necessary.
(



P.277)



The radar sensor may be misaligned and
will be adjusted automatically while driv-
ing. Continue driving for a while.

527

9-2. If a warning is indicated on the meter

When trouble

ises

“Driver Monitor Out of Temperature Range Wait until Normal Temper-
ature”

Cause

Remedy

Indicates one of the following sys-
tems is disabled.



Driver monitor

The temperature of the driver monitor camera is
outside of the operating range. Wait for the temper-
ature to become appropriate.

“Driver Monitor Unavailable See Owner's Manual”

Cause

Remedy

The lens of the driver monitor cam-
era may be dirty.

When there is dirt on the camera lens, clean it with a
dry, soft cloth so as to not damage it.

“Unavailable Activ. Cond.not Satisfied See Owner's Manual” (if
equipped)

Cause

Remedy

The LCA function cannot be

used as the operating conditions
have not been met.(



P.301)

Operate the turn signal lever again after all of the
operating conditions are met.

“Cruise Control Unavailable See Owner's Manual”

Cause

Remedy

Indicates one of the following sys-
tems is disabled.



Dynamic radar cruise control



Cruise control

A message is displayed when the
driving assist switch is pushed
repeatedly.

Press the driving assist switch quickly and firmly.

528

9-2. If a warning is indicated on the meter

“Speed Limiter Unavailable See Owner's Manual”

Cause

Remedy

This message may be displayed
when the shift position is in R.

Change the shift position to D.

A message is displayed when the
driving assist switch is pushed
repeatedly.

Press the driving assist switch quickly and firmly.

“Parking Assist Unavailable Low Visibility See Owner's Manual”

Cause

Remedy

Indicates one of the following sys-
tems is disabled.



RCD (Rear camera detection)



PKSB (Parking Support

Brake)

Remove any dirt or foreign matter from the rear
cameras.

“Parking Assist Unavailable Sensor Blocked”

Cause

Remedy

A sensor may be covered with water drops,
ice, snow, dirt, etc.

Remove the water drops, ice, snow, dirt, etc.,
from the sensor to return the system to nor-
mal.
If a sensor is dirty, the position of the dirty
sensor will be shown on the display.

Due to ice forming on a sensor at low tem-
peratures, a warning message may be dis-
played or the sensor may not be able to
detect an object.

Once the ice melts, the system will return to
normal.

If a warning message is displayed even if the
sensor is clean, there may be a sensor mal-
function.

Have the vehicle inspected by any author-
ized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.

529

9-2. If a warning is indicated on the meter

When trouble

ises

“EV system malfunction”

Cause

Remedy

It may indicate a malfunction.

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

“Accelerator System Malfunction”

Cause

Remedy

It may indicate a malfunction.

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

“Plug-in Charging System Malfunction”

Cause

Remedy

It may indicate a malfunction.

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

“Traction battery system malfunction”

Cause

Remedy

It may indicate a malfunction.

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

“Battery Low”

Remedy

Follow the instructions. (



P.555)

530

9-2. If a warning is indicated on the meter

NOTICE

■

“Battery Low” is displayed frequently

The 12-volt battery may have deteriorated. As the battery may discharge in this state

when left unattended, have the battery inspected by any authorized Lexus retailer or

Lexus authorized repairer, or any reliable repairer.

“Regenerative Braking Limited Press Brake to Decelerate”

Cause

Remedy

Regenerative braking may be restricted in
the following situations.



When electrical energy cannot be regen-
erated any more as the traction battery is
fully charged



When the temperature of the traction bat-
tery is extremely high or extremely low



When the temperature of the electric
motor or power control unit, etc. is
extremely high

Firmly depress the brake pedal to decelerate
the vehicle.

531

9-3. If the EV system will not start

When trouble

ises

9-3.If the EV system will not start

When the EV system cannot
be started even though the
correct starting procedure is
being followed

Cause

Remedy

The charging cable
may be connected
to the vehicle.

Remove the charg-
ing connector.

If the smart entry &
start system has
been disabled by a
setting, the elec-
tronic key may not
operate normally.

Make sure that the
smart entry & start
system has not been
disabled by a
customization set-
ting. If the function
has been disabled,
enable it.

If the electronic key
has been set to bat-
tery saving mode, it
may not operate
normally.

Check if electronic
key has been set to
battery saving
mode. If it is, cancel
the mode.

The traction battery
may be completely
discharged.

Charge the traction
battery.

There may be a mal-
function in the
immobilizer system.



If the key is touch-
ing or is covered
by a metallic
object, move the
key away from the
object.



If the key is near to
or touching a key
to the security sys-
tem (key with a
built-in
transponder chip)
of another vehicle,
move the key
away from the
other key.

There may be a mal-
function in the steer-
ing lock system.

Contact any author-
ized Lexus retailer
or Lexus authorized
repairer, or any reli-
able repairer.

The EV system may
be malfunctioning
due to an electrical
problem such as
electronic key bat-
tery depletion or a
blown fuse.

However, depend-
ing on the type of
malfunction, a tem-
porary measure is
available to start the
EV system.

Cause

Remedy

532

9-3. If the EV system will not start

: if equipped

: It may not be possible to shift the shift

position from P.

Pull the parking brake switch to check
that the parking brake is set.

Pull the parking brake switch to
check that the parking brake is set.

Parking brake indicator will come on.

Check that the shift position is in P.

Change the power switch to
ACC.

*1, 2

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

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

authorized repairer, or any reliable
repairer immediately.

: ACC mode can be enabled/disabled

on the customize menu. (



P.618)

: When ACC is disabled, turn the power

switch to ON then OFF, and start the
EV system as described in P.532 within
5 seconds.

Ensure that the shift position is in P
and depress the brake pedal.

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

When the electronic key is detected, a

buzzer will sound and the power switch

mode will change to ON.
If the smart entry & start system has been

disabled by a customization setting, the

power switch mode will change to ACC.

Firmly depress the brake pedal and
check that

is shown on the

multi-information display.

Press the power switch shortly and
firmly.

In the event that the EV system still cannot

be started, contact any authorized Lexus

retailer or Lexus authorized repairer, or

There may be a mal-
function in the shift
control system.

Contact any author-
ized Lexus retailer
or Lexus authorized
repairer, or any reli-
able repairer.

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

Try to start the EV
system again after
the temperature of
the EV battery
increases due to the
outside tempera-
ture increase etc.

Starting the EV system in an
emergency

Cause

Remedy

Starting the EV system when the
electronic key is not operating
normally

533

9-3. If the EV system will not start

When trouble

ises

any reliable repairer.
If you need further assistance, contact any

authorized Lexus retailer or Lexus author-

ized repairer, or any reliable repairer.

■

Stopping the EV system

Shift the shift position to P, set the parking

brake and press the power switch as you

normally do when stopping the EV system.

■

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.552)

■

Changing power switch modes

Release the brake pedal and press the

power switch in step

above. The EV sys-

tem will not start and the mode will be

changed each time the switch is pressed.

(



P.148)

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.

■

When the 12-volt battery is removed or

discharged

●

In some cases, it may not be possible to

unlock the doors using the smart entry &

start system after the 12-volt battery has

When the interior lights or
headlights are dim and the
EV system cannot be started

Cause

Remedy

The 12-volt battery
may be discharged.
(



P.533)

Restarting the EV
system using the
jumper (or booster)
cables. (



P.555)

The 12-volt battery
terminals may be
loose or corroded.

Check if a 12-volt
battery terminal is
loose or corroded.

If the vehicle 12-volt battery is
discharged

WARNING

■

When replacing the 12-volt battery

●

When the vent plug and indicator are

close to the hold down clamp, the bat-

tery fluid (sulfuric acid) may leak.

●

For information regarding 12-volt bat-

tery replacement, contact any author-

ized Lexus retailer or Lexus authorized

repairer, or any reliable repairer.

534

9-3. If the EV system will not start

been replaced.

Use the wireless remote control or the

mechanical key to lock or unlock the

doors.

●

If the EV system cannot be started the

first time the power switch is pressed

after removing and installing the 12-volt

battery, touch the Lexus emblem side of

the electronic key to the power switch to

start the EV system.

●

The power switch mode is memorized by

the vehicle.

After the 12-volt battery has been

recharged or replaced, the power switch

will return to the mode it was in before it

was discharged or removed.
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 was

discharged, be especially careful when

reconnecting the 12-volt battery.

●

Some systems may require initialization.

■

To prevent 12-volt battery discharge

●

Turn off the headlights and the audio sys-

tem while the EV system is off.

●

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.

■

If the vehicle 12-volt battery is dis-

charged

●

The doors cannot be locked or unlocked

using the smart entry & start system or

wireless remote control, and the door

opener switches will not operate. Use the

mechanical key to enable/disable manual

release handle operation. By enabling

manual release handle operation, the

door can be opened.

●

Information recorded by various comput-

ers will be cleared.

When the 12-volt battery is depleted, have

the vehicle inspected at any authorized

Lexus retailer or Lexus authorized repairer,

or any reliable repairer.

●

Some systems may require initialization.

■

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 discharge, and the EV

system may be unable to start.
(The 12-volt battery recharges automati-

cally while the EV system is operating.)

■

When replacing the 12-volt battery

●

Use a 12-volt battery that the case size is

same as the previous one (LN2), 20 hour

rate capacity (20HR) is equivalent

(60Ah) or greater, and performance rat-

ing (CCA) is equivalent (345A) or

greater.

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

not be properly secured.

• If the 20 hour rate capacity of the

replacement battery is low, even if the

vehicle is used frequently, the 12-volt bat-

tery may discharge and EV system may

not be able to start.

For details, consult any authorized Lexus

retailer or Lexus authorized repairer, or any

reliable repairer.

The doors cannot be locked using the
smart entry & start system or wireless
remote control.

Insert a plastic card, etc. into the
gap in the door handle to pry up the
cover.

To avoid damage, do not apply excessive

When the doors cannot be locked
from outside the vehicle after the
12-volt battery was discharged

Disabling the operation of the
driver’s door

535

9-3. If the EV system will not start

When trouble

ises

force to the cover.

Remove the cover by pressing it on
the rear.

Using the mechanical key, turn the
door lock to the lock side to disable
the door.

Check that the door cannot be
opened.

Open the door. Using the mechani-
cal key, slide the cover as shown in
the illustration.

To avoid damage, do not apply excessive

force to the cover.

Insert the mechanical key into the
opening.

Remove the mechanical key and
slide the emergency lock cover
back to its original position.

Disabling the operation of doors
other than the driver’s door

536

9-3. If the EV system will not start

Check that all of the doors cannot
be opened.

When disconnecting a 12-volt battery
terminal, contact any authorized Lexus
retailer or Lexus authorized repairer,
or any reliable repairer.
If a 12-volt battery terminal is discon-
nected, the doors will not be able to be
opened using the door opener
switches and the electronic key may
become trapped in the vehicle.
To prevent the electronic key (mechan-
ical key) from being locked inside the
vehicle, make sure to remove it from
the vehicle before disconnecting a
12-volt battery terminal.

If the electronic key (mechanical key) is
to be left in the vehicle, make sure to
open a window so an inside manual
release handle can be operated.

When removing the 12-volt bat-
tery terminals

WARNING

■

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.

■

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:

●

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.

●

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.

●

Do not allow the + and - clamps of the

jumper cables to come into contact

with each other.

●

Do not smoke, use matches, cigarette

lighters or allow open flame near the

12-volt battery.

Lexus RZ (2023 year). Manual in english - page 16