2021 Lexus LC500 stop start

3767-2. Steps to take in an emergency
1Stop the vehicle in a safe place and
turn off the air conditioning system,
and then stop the engine.
2 If you see steam:
Carefully lift the hood after the
steam subsides.
If you do not see steam:
Carefully lift the hood.
3 After the engine has cooled down
sufficiently, inspect the hoses and
WARNING
■After recharging the 12-volt battery
Have the 12-volt battery inspected at
your Lexus dealer as soon as possible. If
the 12-volt battery is deteriorating, con-
tinued use may cause the 12-volt battery
to emit a malodorous gas, which may be
detrimental to the health of passengers.
■When exchanging the 12-volt battery
After exchanging, securely attach the
exhaust hose and exhaust hole plug to
the exhaust hole of the exchanged 12-
volt battery. If not properly installed,
gases (hydrogen) may leak into the vehi-
cle interior, and there is the possible dan-
ger of the gas igniting and exploding.
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entan-
gled in the cooling fan or engine drive
belt.
■To prevent damaging the vehicle
The exclusive jump starting terminal is to
be used when charging the 12-volt bat-
tery from another ve hicle in an emer-
gency. It cannot be used to jump start
another vehicle.
If your vehicle overheats
(LC500)
The following may indicate that
your vehicle is overheating.
 The engine coolant temperature
gauge ( P.82) is in the red zone
or a loss of engine power is expe-
rienced. (For example, the vehicle
speed does not increase.)
 “Engine Coolant Temp High” is
shown on the multi-information
display.
 Steam comes out from under the
hood.
Correction procedures

3777-2. Steps to take in an emergency
7
When trouble arises
radiator core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F” line
“L” line
Coolant inlet cap
5 Add coolant if necessary.
Water can be used in an emergency if coolant is unavailable.
6
Start the engine and turn the air
conditioning system on to check
that the radiator cooling fan oper-
ates 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 con-
ditioning system on and off repeatedly.
(The fan may not oper ate in freezing tem-
peratures.)
7 If the fan is not operating:
Stop the engine immediately and
contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the
nearest Lexus dealer.
■When adding coolant
Add coolant in accordance with the follow-
ing procedure.
1 Remove the service cover.
2 Remove the engine cover.
A
B
A
B
C
D

3807-2. Steps to take in an emergency
engine coolant is unavailable.
6Start the hybrid system and turn the
air conditioning system on to check
that the radiator cooling fan oper-
ates 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 con-
ditioning system on and off repeatedly.
(The fan may not operate in freezing tem-
peratures.)
7 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.
If “Hybrid System Overheated Out-
put Power Reduced” is shown on the
multi-information display
1 Stop the vehicle in a safe place.
2 Stop the hybrid system and care-
fully lift the hood. 3
After the hybrid system has cooled
down, inspect the hoses and radia-
tor core (radiato r) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4 The coolant level is satisfactory if it
is between the “F”/“FULL” and
“L”/“LOW” lines on the reservoir.
Reservoir
“F”/“FULL” line
“L”/“LOW” line
5 Add coolant if necessary.
Water can be used in an emergency if
A
B
A
B
C

3817-2. Steps to take in an emergency
7
When trouble arises
power control unit coolant is unavailable.
6After stopping the hybrid system
and waiting for 5 minutes or more,
start the hybrid system again and
check if “Hybrid System Over-
heated Output Power Reduced” is
shown on the multi-information dis-
play.
If the message does not disappear:
Stop the hybrid system and contact your
Lexus dealer.
If the message is not displayed:
The hybrid system temperature has
dropped and the vehicle may be driven
normally.
However, if the message appears again fre-
quently, contact your Lexus dealer.
■When adding engine coolant
Add coolant in accordance with the follow-
ing procedure.
1 Remove the service cover.
2 Remove the engine cover. 3
Remove the caps and .
4 Add coolant through the inlet of the cap
up to the “F” line , and then
replace the cap .
5 Add coolant through the inlet of the cap
until it is full, and then replace the
cap .
WARNING
■When inspecting under the hood of
your vehicle
Observe the following precautions.
Failure 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 engine com-
partment may be very hot.
AB
BC
B
A
A

3827-2. Steps to take in an emergency
1Stop the engine .
Set the parking brake and shift the
shift position to P.
2 Remove the mud, snow or sand
from around the rear wheels.
3 Place wood, stones or some other
material under the rear wheels to
help provide traction.
4 Restart the engine .
5 Shift the shift position to D or R and
release the parking brake. Then,
while exercising caution, depress
the accelerator pedal.
■When it is difficult to free the vehicle
Press the switch to turn off TRAC.
WARNING
●After the hybrid system has been
turned off, check that the indicator on
the power switch and the “READY”
indicator are 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
stops. Do not touch or approach rotat-
ing 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.
●Do not loosen the coolant inlet cap or
coolant reservoir caps while the hybrid
system and radiator are hot.
High temperature steam or coolant
could spray out.
NOTICE
■When adding engine/power control
unit coolant
Add coolant slowly after the hybrid sys-
tem has cooled down sufficiently. Adding
cool coolant to a hot hybrid system too
quickly can cause damage to the hybrid
system.
■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 any coolant additive.
If the vehicle becomes stuck
Carry out the following proce-
dures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Recovering procedure

4078-2. Customization
8
Vehicle specifications
*1: For details about each function: P.82, 90
*2: The default setting varies according to country.
*3:LC500
*4: LC500h
*5: 2 of the following items: current fuel cons umption, average fuel economy (after reset),
average fuel economy (after start), average fuel economy (after refuel), average vehicle
speed (after reset), average vehicle speed (after start), elapsed time (after reset),
elapsed time (after start), distance (driving range), distance (after start), blank.
*6: Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.
■HUD (Head-up Display)*1 (  P.93)
Rev peakOffOnO
Clock12-hour display24-hour displayO
Sensor sensitivity for darkening the
brightness of the instrument cluster
depending on the outside bright-
ness
Standard-2 to 2O
Sensor sensitivity for returning the
brightness of the instrument cluster
to the original level depending on
the outside brightness
Standard-2 to 2O
Suggestion functionOn
On
(when the vehicle is stopped)
OO
Off
FunctionDefault settingCustomized setting
Gauge informationTachometer
Eco Driving Indica-
tor Light
*2
OHybrid System Indi-
cator
*3
No display
Driving support display (Naviga-
tion system)OnOffO
Function*1Default settingCustomized settingABC
ABC

433What to do if... (Troubleshooting)
It is locked automatically to prevent
theft of the vehicle. ( P.153, 157)
 Is the window lock switch pressed?
The power window at the passenger’s seat
cannot be operated if the window lock
switch is pressed. ( P.139)
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY or IGNITION ON
mode (the engine is
not running operating>) for a period of time.
( P.155, 160)
 The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.351)
 The parking brake indicator is on
Is the parking brake released? ( P.176)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.347, 356) 
Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
( P.72)
To stop the alarm, turn the engine
switch to IGNITION
ON mode , or start the
engine .
 Is the electronic key left inside the
vehicle?
Check the message on the multi-informa-
tion display. ( P.356)
 When a warning light turns on or a
warning message is displayed, refer
to P.347, 356.
 Slow down the vehicle, drive with
extra caution, and take your vehicle
to the nearest Lexus dealer or
authorized tire dealer as soon as
possible to have the tire replaced.
( P.362)
The steering wheel cannot be
turned after the engine system> is stopped
The windows do not open or
close by operating the power
window switches
The engine switch switch> is turned off automati-
cally
A warning buzzer sounds during
drivingAn alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire

Alphabetical index437
Do-it-yourself maintenance .................... 296
Door courtesy lights ..................................... 271
Door lockDoors.................................................................. 110
Smart access system with push-button start ....................................................................117
Wireless remote control......................... 108
Door pockets ................................................ 273
Doors ................................................................... 110 Automatic door lock ing and unlocking
system ............................................................. 113
Door glasses ................................................. 138
Door lock.......................................................... 110
Open door warning buzz er .............111, 113
Outside rear view mirrors ......................135
Drive info 1/Drive info 2 .............................. 88
Drive information ........................................... 88
Driver’s seat position memory ................. 127 Driving position memory......................... 127
Memory recall function ............................ 129
Power easy access system ..................... 127
Drive-start control ........................................143
Driving................................................................ 142 Break-in tips ................................................... 143
Correct driving posture .............................23
Driving mode select switch .................. 224
Hybrid vehicle driving tips .................... 248
Procedures ..................................................... 142
Winter drive tips.........................................250
Driving mode select switch ..................... 224
Driving position memory Power easy access system ..................... 127
DRS (Dynamic Rear Steering) .............. 243
Dynamic radar cruise control with full- speed range.................................................. 214Warning message......................................222
Dynamic Rear Steering (DRS) .............. 243
E
ECB (Electronically Controlled Brake Sys- tem) ................................................................ 243
Eco drive mode ............................................ 224 Eco Driving Indicator.................................... 80
Eco Driving Indicator Light ........................ 80
EDR (Event data recorder) ........................... 8
Elapsed time ..................................................... 88
Electric motor (traction motor) ................ 62
Electric Power Steering (EPS)
Function .......................................................... 243
Warning light .............................................. 348
Electronically Controlled Brake System (ECB) ............................................................ 243
Electronic key ................................................ 106 Battery-saving function.............................. 119
If the electronic key does not operate properly ....................................................... 367
Replacing the battery .............................. 330
Emergency, in case of If a warning buzzer sounds................... 347
If a warning light turns on....................... 347
If a warning message is displayed .... 356
If the 12-volt battery is discharged ... 369
If the electronic key does not operate properly ....................................................... 367
If the engine will not start........................363
If the fuel filler do or cannot be opened
......................................................................... 366
If the hybrid system will not start ........364
If the vehicle is trapped in rising water ..........................................................................339
If you have a flat tire ..................................362
If you lose your keys ................................ 366
If you think something is wrong..........345
If your vehicle becomes stuck .............382
If your vehicle has to be stopped in an emergency ................................................ 338
If your vehicle needs to be towed .......341
If your vehicle overheats ............376, 379
Emergency flashers .................................... 338
Energy monitor ............................................... 98
Engine ACCESSORY mode.................... 155, 159
Compartment............................................. 304
Engine switch ................................................ 152