2021 Lexus LC500 stop start

2926-1. Maintenance and care
3Remove dust using a vacuum
cleaner etc. to clean the filter.
Also, remove dust on the grille as well as on
the filter using a vacuum cleaner.
4Install the filter in its original posi-
tion, and then install the grille.
5 If a warning message was displayed
on the multi-information display
before cleaning the filters, start the
hybrid system and check that the
message disappears.
It may take several minutes before the
warning message disappears.
■Scheduled maintenance of the air
intake filters is necessary when
In some situations such as when the vehicle
is used frequently or in heavy traffic or dusty
areas, the air intake filters may need to be
cleaned more regularly.
For details, refer to “Owner’s Manual Sup-
plement” or “Scheduled Maintenance”.
■Air intake vents maintenance
●If the vehicle is driven with the air intake
vents clogged, charging/discharging of
the hybrid battery (traction battery) may
become limited and the fuel consumption
may increase.
●Depending on the conditions under
which the vehicle is used, the air intake
vents may need to be cleaned more reg-
ularly.
■Cleaning the air intake vents
●Dust in the air intake vents may interfere
with the cooling of the hybrid battery (traction battery). If charging/discharging
of the hybrid battery (traction battery)
becomes limited, the distance that the
vehicle can be driven using the electric
motor (traction moto
r) may be reduced
and the fuel economy may be reduced.
Inspect and clean the air intake vents
periodically.
●Improper handling may result in damage
to the air intake vent covers or filters. If
you have any concerns about cleaning
the filters, contact your Lexus dealer.
●The necessary cleaning interval of the air
intake vents will diff er according to the
vehicle usage environment.
■If “Maintenance Required for Traction
battery Cooling Parts See owner’s man-
ual” is displayed on the multi-informa-
tion display
●If this warning message is displayed on
the multi-information display, remove the
air intake vent covers and clean the filters.
(  P.291)
●After cleaning the air intake vents, start
the hybrid system and check that the
warning message is no longer displayed.
After the hybrid system is started, it may
be necessary to drive the vehicle up to
approximately 20 minutes before the
warning message disapp ears. If the warn-
ing message does not disappear after
driving for appropri ately 20 minutes,
have the vehicle inspected by your Lexus
dealer.
WARNING
■When cleaning the hybrid battery
(traction battery) ai r intake vents/fil-
ters
●Do not use water or other liquids to
clean the air intake vents/filters. If
water is applied to the hybrid battery
(traction battery) or other compo-
nents, a malfunction or fire may occur.
●When the air intake vent covers (under
the both sides of the rear seat) are to
be removed, make sure to turn the
power switch off to stop the hybrid sys-
tem.

337
7
7
When trouble arises
When trouble arises
7-1. Essential informationEmergency flashers.................. 338
If your vehicle has to be stopped in an emergency .......................... 338
If the vehicle is trapped in rising water............................................ 339
7-2. Steps to take in an emergency If your vehicle needs to be towed......................................................... 341
If you think something is wrong ........................................................ 345
Fuel pump shut off system (LC500).................................... 346
If a warning light turns on or a warning buzzer sounds ....... 347
If a warning message is displayed ........................................................ 356
If you have a flat tire.................. 362
If the engine will not start (LC500).................................... 363
If the hybrid system will not start (LC500h) ................................. 364
If you lose your keys ................. 366
If the fuel filler door cannot be opened........................................ 366
If the electronic key does not operate properly .................... 367
If the 12-volt battery is discharged ........................................................ 369
If your vehicle overheats (LC500).................................... 376If your vehicle overheats
(LC500h)................................. 379
If the vehicle becomes stuck 382

3467-2. Steps to take in an emergency
Follow the procedure below to restart
the engine after the system is activated.
1Turn the engine switch to ACCES-
SORY mode or turn it off.
2 Restart the engine.
Fuel pump shut off system
(LC500)
To minimize the risk of fuel leakage
when the engine stalls or when an
airbag inflates upon collision, the
fuel pump shut off system stops the
supply of fuel to the engine.
Restarting the engine
NOTICE
■Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto the
ground, the fuel system has been dam-
aged and is in need of repair. Do not
restart the engine.

3557-2. Steps to take in an emergency
7
When trouble arises
WARNING
■Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold and
inflated to the inflation pressure recommended by the vehicle manufacturer on the vehi-
cle placard or tire inflation pr essure label (tire and load info rmation label). (If your vehicle
has tires of a different size th an the size indicated on the vehicle placard or tire inflation
pressure label [tire and load information label], you should determine the proper tire
inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire pressure monitor-
ing system (TPMS-tire pressure warning system) that illuminates a low tire pressure tell-
tale (tire pressure warning light) when one or more of your tires is significantly under-
inflated. Accordingly, when the low tire pressu re telltale (tire pressure warning light) illu-
minates, you should stop and check your tires as soon as possible, and inflate them to the
proper pressure. Driving on a si gnificantly under-inflated tire causes the tire to overheat
and can lead to tire failure. Under-inflation al so reduces fuel efficiency and tire tread life,
and may affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a substitute for proper
tire maintenance, and it is the driver’s respon sibility to maintain correct tire pressure, even
if under-inflation has not reac hed the level to trigger illumina tion of the TPMS low tire
pressure telltale (tire pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system) mal-
function indicator to indicate when the system is not operating properly. The TPMS (tire
pressure warning system) malfunction indicator is combined with the low tire pressure
telltale (tire pressure warning light). When the system detect s a malfunction, the telltale
will flash for approximately one minute and th en remain continuously illuminated. This
sequence will continue upon subsequent vehi cle start-ups as long as the malfunction
exists. When the malfunction in dicator is illuminated, the system may not be able to
detect or signal low tire pressure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a variety of reasons,
including the installation of re placement or alternate tires or wheels on the vehicle that
prevent the TPMS (tire pressure warning sy stem) from functioning properly. Always
check the TPMS (tire pressure warning system ) malfunction telltale after replacing one or
more tires or wheels on your vehicle to ensu re that the replacement or alternate tires and
wheels allow the TPMS (tire pr essure warning system) to cont inue to function properly.
NOTICE
■To ensure the tire pressure warning system operates properly
Do not install tires with differ ent specifications or makers, as the tire pressure warning
system may not operate properly.

3587-2. Steps to take in an emergency
●Malfunction in the EPS (Electric Power Steering) system
The electric power steering sy stem warning light comes on. ( P.348)
●Malfunction in the tire pressure warning system
The tire pressure warn ing light comes on. ( P.352)
●Remaining fuel level is low
The low fuel level warning light comes on. ( P.351)
■If “Hybrid System Overheated Output Power Reduced” is shown (LC500h)
This message may be displayed when driving under severe operating conditions. (For exam-
ple, when driving up a long steep hill.) Stop and check. ( P.379)
■If “Traction Battery Needs to be Protected Re frain from the Use of N Position” is shown
(LC500h)
This message may be displayed wh en the shift position is in N.
As the hybrid battery (traction battery) cannot be charged when the shift position is in N,
shift the shift position to P when the vehicle is stopped.
■If “Traction Battery needs to be Protected Shift into P to Restart” is shown (LC500h)
This message is displayed when the hybrid ba ttery (traction battery) charge has become
extremely low because the vehicle has been left with the N shift position selected for a cer-
tain amount of time.
When operating the vehicle, shift to P and restart the hybrid system.
■If “Shift to P Before Exiting Vehicle” is shown
The driver’s door is opened without turning the engine switch to off with the
shift lever in any position other than P. Shift the shift position to P.
■If “Shift Is in N Release Accelerator Before Shifting” is shown
The accelerator pedal has been depressed when th e shift position is in N. Release the accel-
erator pedal and shift the shift position to D or R.
■If “Depress Brake when Vehicle Is Stoppe d Hybrid System May Overheat” is shown
(LC500h)
The message may be displayed when the accelerator pedal is depressed to hold the vehicle
while the vehicle is stopped on an uphill etc. The hybrid system may overheat. Release the
accelerator pedal and de press the brake pedal.
■If “Shift system malfunction Driving unavailable” is shown
There is a malfunction in the shift control system. Have the vehicle inspected by your Lexus
dealer immediately.
■If “Auto Power Off to Conserve Battery” is shown
LC500:
Power was turned off due to the automatic power off function. Next time when starting the
engine, increase the engine speed slightly an d maintain that level for approximately 5 min-
utes to recharge the battery.
LC500h:
Power was turned off due to the automatic power off function. Next time when starting the
hybrid system, operate the hybrid system for approximately 5 minutes to recharge the 12-
volt battery.

3607-2. Steps to take in an emergency
• “Shift system malfunction”
• “P switch malfunction”
• “Shift system unavailable”
●If any of the following messages is shown on the multi-information display, it may indicate
a malfunction in a system or part. Immediatel y have the vehicle inspected by your Lexus
dealer.
• “Hybrid System Malfunction” (LC500h)
•“Check Engine”
•“Hybrid Battery System Malfunction” (LC500h)
• “Accelerator System Malfunction”
●If any of the following messages is shown on the multi-information display, the vehicle may
have run out of fuel. Stop the vehicle in a safe place and, if the fuel level is low, refuel the
vehicle. ( P.65)
• “Hybrid system stopped” (LC500h)
• “Engine stopped”(LC500h)
●If any of the following messages is shown on the multi-information di splay, it may indicate
a malfunction. Immediately stop the vehicle and contact your Lexus dealer.
• “Braking Power Low”
• “Charging System Malfunction”
• “Oil Pressure Low”
●If “Aux Battery Low” is shown, observe the following. (LC500h)
• If the message disappears in a few minutes*
Keep the hybrid system operating for more than approximately 15 minutes to charge the
12-volt battery.
• If the message does not disappear Refer to “If the 12-volt battery is discharged” ( P.369) to start the hybrid system
*: It is displayed for approximately 6 seconds.
●If “Battery low” is shown, the 12-volt battery charge is insufficient. Recharge or replace the
12-volt battery.
●If “Maintenance Required for Traction battery Cooling Parts” is shown, the filters may be
clogged, the air intake vents may be blocked, or there may be a gap in the duct. There-
fore, perform the following correction procedure. (LC500h)
• If the air intake vents and filters of the hybrid battery (traction battery) are dirty, perform the procedure on P.291 to clean them.
• If the warning message is shown when the air intake vents and filters of the hybrid battery
(traction battery) are not dirty, have th e vehicle inspected by your Lexus dealer.
■If a message that indicates the need fo r visiting your Lexus dealer is shown
The system or part shown on the multi-information display is malfunctioning. Have the vehi-
cle inspected by your Lexus dealer immediately.
■Warning buzzer
In some cases, the buzzer may not be heard du e to being in a noisy location or audio sound.
NOTICE
■While the engine oil level warning message is displayed
Continued engine operation with low engine oil will damage the engine.

3697-2. Steps to take in an emergency
7
When trouble arises
will turn to ACCESSORY mode.
3Firmly depress the brake pedal and
check that is shown on the
multi-information display.
4 Press the engine switch switch>.
In the event that the engine tem> still cannot be started, contact
your Lexus dealer.
■Stopping the engine
Set the parking brake, shift the shift position
to P and press the engine switch switch> as you normally do when stopping
the engine .
■Electronic key battery
As the above procedure is a temporary
measure, it is recomme nded that the elec-
tronic key battery be replaced immediately
when the battery is depleted. ( P.330)
■Changing engine switch
modes
Release the brake pedal and press the
engine switch in step 3
above.
The engine does not start
and modes will be changed each time the
switch is pressed. ( P.155, 159)
Use the mechanical key ( P.108) in
order to perform th e following opera-
tions:
■Locking and unlocking the doors
 P.367
■Opening the trunk
1 Slide the rear passengers’ seat
belts towards the outside.
2 Insert your fingers at the positions
marked and pull towards you to
If the 12-volt battery is dis-
charged
The following procedures may be
used to start the engine tem> or opening the doors, trunk or
glove box if the 12-volt battery is
discharged.
You can also call your Lexus dealer
or a qualified repair shop.
Locking and unlocking the doors
and opening the trunk
A

3737-2. Steps to take in an emergency
7
When trouble arises
LC500hExclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclusive jump starting
terminal and any mo ving parts as shown in the illustration
6 Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the 12-volt battery of your
vehicle.
7 Open and close any of the door of
your vehicle with the engine switch
off.
8 Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by
turning the engine switch switch> to IGNITION ON mode
.
9 Once the vehicle’s engine system> has started, remove the
jumper cables in the exact reverse order from which they were con-
nected.
10 Close the exclusive jump starting
terminal cover, and reinstall the fuse
box cover to its original position.
Once the engine
starts, have the vehicle inspected at
your Lexus dealer as soon as possible.
■Starting the engine
when the 12-volt battery is discharged
The engine cannot be
started by push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio sys-
tem while the engine is
stopped.
●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.
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B
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