2021 Lexus LC500h ECU

671-4. Hybrid system
1
For safety and security
WARNING
●If electrolyte is leaking from the hybrid
battery (traction battery), do not
approach the vehicle.
Even in the unlikely event that the
hybrid battery (traction battery) is
damaged, the internal construction of
the battery will prevent a large amount
of electrolyte from leaking out. How-
ever, any electrolyte that does leak out
will give off a vapor. This vapor is an
irritant to skin and eyes and could
cause acute poisoning if inhaled.
●Do not bring burning or high-tem-
perature items close to the electrolyte.
The electrolyte may ignite and cause a
fire.
●If a fire occurs in the hybrid vehicle,
leave the vehicle as soon as possible.
Never use a fire extinguisher that is not
meant for electric fires. Using even a
small amount of water may be danger-
ous.
●If your vehicle needs to be towed, do
so with rear wheels raised. If the
wheels connected to the electric
motor (traction motor) are on the
ground when towing, the motor may
continue to generate electricity. This
may cause a fire. ( P.341)
●Carefully inspect the ground under the
vehicle. If you find that liquid has
leaked onto the ground, the fuel sys-
tem may have been damaged. Leave
the vehicle as soon as possible.
■Hybrid battery (traction battery)
●Your vehicle contains a sealed lithium-
ion battery
●Never resell, hand over or modify the
hybrid battery. To prevent accidents,
hybrid batteries that have been
removed from a disposed vehicle are
collected through Lexus dealer. Do not
dispose of the battery yourself.
Unless the battery is properly col-
lected, the following may occur, result-
ing in death or serious injury:
• The hybrid battery may be illegally dis- posed of or dumped, and it is hazard-
ous to the environment or someone
may touch a high voltage part, result-
ing in an electric shock.
• The hybrid battery is intended to be used exclusively with your hybrid vehi-
cle. If the hybrid battery is used outside
of your vehicle or modified in any way,
accidents such as electric shock, heat
generation, smoke generation, an
explosion and electrolyte leakage may
occur.
When reselling or handing over your
vehicle, the possibility of an accident is
extremely high because the person
receiving the vehicle may not be aware
of these dangers.
●If your vehicle is disposed of without
the hybrid battery having been
removed, there is a danger of serious
electric shock if hi gh voltage parts,
cables and their connectors are
touched. In the event that your vehicle
must be disposed of, the hybrid battery
must be disposed of by your Lexus
dealer or a qualified service shop. If
the hybrid battery is not disposed of
properly, it may cause electric shock
that can result in death or serious
injury.

691-4. Hybrid system
1
For safety and security
■If a warning light comes on, a warning
message is displayed, or the 12-volt bat-
tery is disconnected
The hybrid system may not start. In this
case, try to start the system again. If the
“READY” indicator does not come on, con-
tact your Lexus dealer.

701-5. Theft deterrent system
1-5.Theft deterrent system
The indicator light flashes after the
engine switch has been
turned off to indicate that the system is
operating.
The indicator light stops flashing after the engine switch has
been turned to ACCESSORY or
IGNITION ON mode to
indicate that the system has been can-
celed.
■System maintenance
The vehicle has a maintenance-free type
engine immobilizer system system>.
■Conditions that may cause the system to
malfunction
●If the grip portion of the key is in contact
with a metallic object
●If the key is in close proximity to or touch-
ing a key registered to the security sys-
tem (key with a built-in transponder chip)
of another vehicle
■Certifications for the engine immo bilizer system
For vehicles sold in the U.S.A., Hawaii, Guam and Puerto Rico
Engine immobilizer system

The vehicle’s keys have built-in tran-
sponder chips that prevent the
engine from start-
ing if a key has not been previously
registered in the vehicle’s on-board
computer.
Never leave the keys inside the
vehicle when you leave the vehicle.
This system is designed to help pre-
vent vehicle theft but does not guar-
antee absolute security against all
vehicle thefts.
Operating the system

711-5. Theft deterrent system
1
For safety and security
For vehicles sold in Canada
NOTICE
■To ensure the system operates cor-
rectly
Do not modify or remove the system. If
modified or removed, the proper opera-
tion of the system cannot be guaranteed.

731-5. Theft deterrent system
1
For safety and security
■Alarm-operated door lock
In the following cases, depending on the sit-
uation, the door may automatically lock to
prevent improper entry into the vehicle:
●When a person remaining in the vehicle
unlocks the door and the alarm is acti-
vated.
●While the alarm is activated, a person
remaining in the vehicle unlocks the door.
●When recharging or replacing the 12-volt
battery
NOTICE
■To ensure the system operates cor-
rectly
Do not modify or remove the system. If
modified or removed, the proper opera-
tion of the system cannot be guaranteed.
Theft prevention labels
(U.S.A.)
These labels are attached to the
vehicle to reduce vehicle theft by
facilitating the tracing and recov-
ery of parts from stolen vehicles.
Do not remove under penalty of
law.

782-1. Instrument cluster
indicate that a system check is being
performed. They will turn off after the
engine is started, or
after a few seconds. There may be a
malfunction in a system if a light does
not come on, or turn off. Have the vehi-
cle inspected by your Lexus dealer.
*2: This light illuminates on the multi-infor-mation display.
*3: The light flashes to indicate a malfunc-tion.
*4: This light illuminates on the center panel.
The indicators inform the driver of the
operating state of the vehicle’s various
systems.
■Operation indicators
WARNING
■If a safety system warning light does
not come on
Should a safety system light such as the
ABS and SRS warning light not come on
when you start the engine tem>, this could mean that these systems
are not available to he lp protect you in an
accident, which could result in death or
serious injury. Have the vehicle inspected
by your Lexus dealer immediately if this
occurs.
Indicators
Turn signal indicator
(  P.175)
(U.S.A.)
Headlight indicator ( P.181)
(Canada)
Tail light indicator ( P.181)
Headlight high beam indica-
tor ( P.183)
Automatic High Beam indica-
tor
*1 ( P.184)
Cruise control indicator
*2
(  P.214)
Dynamic radar cruise control
indicator
*2 (  P.214)
Cruise control “SET” indica-
tor
*2 (  P.214)
(white)
LKA indicator*2 ( P.207)
(green)
LKA indicator*2 ( P.207)
(orange)
LKA indicator*2, 3 ( P.207)
(if equipped)
Intuitive parking assist indica-
tor ( P.225)
Slip indicator
*1, 3 (  P.244)
VSC OFF indicator
*1
(  P.244)
PCS warning light
*1, 4
(  P.200)
BSM (Blind Spot Monitor)
outside rear view mirror indi-
cators
*5, 6 (  P.231)
BSM (Blind Spot Monitor)
indicator ( P.231)
RCTA (Rear Cross Traffic
Alert) indicator ( P.231)
Brake hold standby indica-
tor
*1 (  P.179)
Brake hold operated indica-
tor
*1 (  P.179)
Security indicator
*7 (  P.70,
72)

1103-2. Opening, closing and locking the doors and trunk
3-2.Opening, closing and locking the doors and trunk
■Smart access system with push-
button start
Carry the electronic key to enable this
function.
1 Push the depression on the front
edge of the driver’s door handle to
unlock the door. Push the depres-
sion on the front edge of the pas-
senger’s door handle to unlock
both side doors.
*
The outside door hand les will be extended.
The extended outside door handles are
automatically retracted in approximately
60 seconds.
The doors cannot be unlocked for 3 sec-
onds after the doors are locked.
*: The door unlock settings can be changed.
2 Push the rear edge of the extended
door handle to lock the doors.
If the outside door handles are extended,
they will be retracted.
After locking the doors, check that the
door is securely locked with the door lock
indicator ( P.112).
■Wireless remote control
1 Locks both side doors
The outside door handles will be retracted
if they have been ex tended. After locking
the doors, check that the door is securely
locked with the door lock indicator
(  P.112).
2 Unlocks both side doors
Pressing the button unlocks the driver’s
door. Pressing the button again within 5
seconds unlocks the other door.
The outside door handles will be extended.
Press and hold to open the windows.
*
*
: This setting must be customized at your Lexus dealer.
■Side window open/close function linked
to door operation
When a door is opened, its window opens
slightly. When a door is closed, its window
closes completely.
■Speed-linked outside door handle
retracting function
When the vehicle speed reaches 6 mph (10
km/h), the outside door handles will be
retracted.
■To extend the outside door handles
retracted automatically
The outside door hand le can be extended
by pushing the depression on the front edge
of it. To lock the door s, push the rear edge
of the outside door handle after extending it
once.
Doors
Unlocking and locking the doors
from the outside

1113-2. Opening, closing and locking the doors and trunk
3
Before driving
■Switching the door unlock function
It is possible to set which doors the entry
function unlocks using the wireless remote
control.
1 Turn the engine switch
off.
2 When the indicator light on the key sur-
face is not on, press and hold ,
or for approximately 5
seconds while pressing and holding
.
The setting changes each time an operation
is performed, as shown below. (When
changing the setting continuously, release
the buttons, wait for at least 5 seconds, and
repeat step 2 .)
To prevent unintended triggering of the
alarm, unlock the doors using the wireless
remote control and open and close a door
once after the settings have been changed.
(If a door is not opened within 60 seconds
after is pressed, the doors will be
locked again and the alarm will automati- cally be set.)
In a case that the alarm is triggered, imme-
diately stop the alarm. (
P.72)
■Impact detection door lock release sys-
tem
In the event that the vehicle is subject to a
strong impact, both side doors are
unlocked. Depending on the force of the
impact or the type of accident, however, the
system may not operate.
■Operation signals
A buzzer sounds and the emergency flash-
ers flash to indicate that the doors have
been locked/unlocked. (Locked: once;
Unlocked: twice)
A buzzer sounds to in dicate that the win-
dows are operating.
■Security feature
If a door is not opened within approximately
60 seconds after the vehicle is unlocked,
the security feature automatically locks the
vehicle again.
■Open door warning buzzer
If an attempt to lock the doors is made when
a door is not fully closed, a buzzer sounds
continuously for 5 seconds. Fully close the
door to stop the buzzer, and lock the vehi-
cle once more.
■Setting the alarm
Locking the doors will set the alarm system.
(  P.72)
■Conditions affecting the operation of
the smart access system with push-but-
ton start or wireless remote control
 P.119
■If the smart access system with push-
button start or the wireless remote con-
trol does not operate properly
Use the mechanical key to lock and unlock
the doors. ( P.367)
Replace the key battery with a new one if it
is depleted. ( P.330)
■If the 12-volt batte ry is discharged
The doors cannot be locked and unlocked
using the smart access system with push-
button start or wireless remote control.
Multi-information display/BeepUnlocking function
Exterior: Beeps 3 times
Interior: Pings once
Pushing the depression
on the front edge of the
driver’s door handle
unlocks only the
driver’s door.
Pushing the depression
on the front edge of the
passenger’s door han-
dle unlocks both side
doors.
Exterior: Beeps twice
Interior: Pings once
Pushing the depression
on the front edge of
either door handle
unlocks both side
doors.