2021 Lexus LC500C alarm

2TABLE OF CONTENTS
For your information ......................................6
Reading this manual .................................... 10
How to search ................................................. 11
Pictorial index ................................................. 12
1-1. For safe use Before driving .................................... 22
For safe driving.................................. 23
Seat belts ............................................. 24
SRS airbags ........................................ 29
Pop Up Hood ................................... 36
Active roll bar ................................... 38
Front passenger occupant classifi- cation system ................................... 41
Exhaust gas precautions .............. 45
1-2. Child safety Riding with children........................ 46
Child restraint systems ................. 46
1-3. Lexus Enform Lexus Enform Safety Connect .. 56
Lexus Enform Remote .................... 61
Lexus Enform Service Connect. 62
1-4. Theft deterrent system Engine immobilizer system ......... 63
Alarm.................................................... 65
Theft prevention labels (U.S.A.) 67
2-1. Instrument cluster Warning lights and indicators .... 70
Gauges and meters ....................... 75
Multi-information display............. 79
Head-up display .............................. 85Fuel consumption information...
88
3-1. Key information Keys ....................................................... 92
3-2. Opening, closing and locking the doors and trunk
Doors .................................................... 96
Trunk .................................................. 100
Smart access system with push- button start.................................... 103
3-3. Adjusting the seats Front seats......................................... 110
Driving position memory ............. 112
Head restraints ................................ 116
3-4. Adjusting the steering wheel and mirrors
Steering wheel ................................. 117
Inside rear view mirror ................ 118
Outside rear view mirrors........... 119
3-5. Opening and closing the windows Power windows .............................. 122
3-6. Opening and closing the soft top roof
Soft top roof ..................................... 126
4-1. Before driving Driving the vehicle........................ 136
Cargo and luggage....................... 142
Vehicle load limits.......................... 144
Trailer towing................................... 144
Dinghy towing ................................ 145
1For safety and security
2Vehicle status information and
indicators
3Before driving
4Driving

21
1
1
For safety and security
For safety and security
1-1. For safe useBefore driving ................................. 22
For safe driving.............................. 23
Seat belts .......................................... 24
SRS airbags .................................... 29
Pop Up Hood ................................ 36
Active roll bar ................................ 38
Front passenger occupant classifi- cation system ................................ 41
Exhaust gas precautions ........... 45
1-2. Child safety Riding with children..................... 46
Child restraint systems .............. 46
1-3. Lexus Enform Lexus Enform Safety Connect 56
Lexus Enform Remote ................ 61
Lexus Enform Service Connect ........................................................... 62
1-4. Theft deterrent system Engine immobilizer system ...... 63
Alarm................................................. 65
Theft prevention labels (U.S.A.) ........................................................... 67

651-4. Theft deterrent system
1
For safety and security
■Items to check before locking the
vehicle
To prevent unexpected triggering of
the alarm and vehicle theft, make sure
of the following:
 Nobody is in the vehicle.
 The windows are closed before the
alarm is set.
 No valuables or other personal
items are left in the vehicle.
■Setting
Close the doors, trunk and hood, and lock both side doors. The system will
be set automatically after 30 seconds.
The indicator light changes from being on
to flashing when the system is set.
■Canceling or stopping
Do one of the following to deactivate
or stop the alarms:
 For the U.S.A.: Unlock the doors or
open the trunk.
 For Canada: Unlock the doors using
the entry function or wireless
remote control.
 Turn the engine switch to ACC or
ON, or start the engine. (The alarm
will be deactivated or stopped after
a few seconds.)
■System maintenance
The vehicle has a maintenance-free type
alarm system.
■Triggering of the alarm
The alarm may be triggered in the following
situations:
(Stopping the alarm deactivates the alarm
system.)
●For Canada: The doors are unlocked
using the mechanical key.
Alarm
The alarm uses light and sound to
give an alert when an intrusion is
detected.
The alarm is triggered in the follow-
ing situations when the alarm is set:
 For the U.S.A.: A locked door or
trunk is unlocked or opened in
any way other than using the
entry function, wireless remote
control or mechanical key. (The
doors will lock again automati-
cally.)
 For Canada: A locked door or
trunk is unlocked or opened in
any way other than using the
entry function or wireless remote
control. (The door will lock again
automatically.)
 The hood is opened.
Setting/canceling/stopping the
alarm system

661-4. Theft deterrent system
●A person inside the vehicle opens a door,
the trunk or hood, or unlocks the vehicle
using a door lock switch.
●The battery is rech arged or replaced
when the vehicle is locked. ( P.336)
■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 bat-
tery
■Customization
The alarm can be set to activate/deactivate
when the mechanical key is used to unlock.
(Customizable features: P.367)
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.

923-1. Key information
3-1.Key information
The following keys are provided with
the vehicle.
Electronic keys
• Operating the smart access system with push-button start ( P.103)
• Operating the wireless remote control function
Mechanical keys
Key number plate
Card key (electronic key) (if
equipped)
Operating the smart access system with
push-button start ( P.103)
■Card key (if equipped)
●The card key is not waterproof.
●The mechanical key that is stored inside
the card key should be used only if a
problem arises, such as when the card key does not operate properly.
●If the battery cover is not installed and the
battery falls out or if the battery was
removed because the key got wet, rein-
stall the battery with the positive terminal
facing the Lexus emblem.
■When riding in an aircraft
When bringing an electronic key onto an
aircraft, make sure you do not press any
buttons on the electronic key while inside
the aircraft cabin. If you are carrying an
electronic key in your bag etc., ensure that
the buttons are not likely to be pressed
accidentally. Pressing a button may cause
the electronic key to emit radio waves that
could interfere with the operation of the air-
craft.
■Electronic key battery depletion
●The standard battery life is 1 to 2 years.
(The card key battery life is from one year
to one year and a half.)
●If the battery becomes low, an alarm will
sound in the cabin when the engine is
stopped.
●Electronic keys that will not be used for
long periods of time can be set to the bat-
tery-saving mode in advance. ( P.105)
●As the electronic key always receives
radio waves, the battery will become
depleted even if the electronic key is not
used. The following symptoms indicate
that the electronic key battery may be
depleted. Replace the battery when nec-
essary. ( P.297)
• The smart access system with push-but- ton start or the wireless remote control
does not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
You can replace the battery by yourself
Keys
Key types
A
B
C
D

943-1. Key information
The electronic keys are equipped with
the following wireless remote control:Locks the doors ( P.96)
Unlocks the doors ( P.96)
Opens the windows
* ( P.96) Opens the trunk (
P.102)
Sounds the alarm ( P.94)
*: This setting must be customized at your
Lexus dealer.
■Theft deterrent panic mode
When is pressed for longer than
about one second, an alarm will sound
intermittently and the vehicle lights will flash
to deter any person from trying to break
into or damage your vehicle.
To stop the alarm, press any button on the
electronic key.
To take out the mechanical key, push
the release button and take the key out.
The mechanical key can only be inserted in
one direction, as the key only has grooves
on one side. If the key cannot be inserted in
a lock cylinder, turn it over and re-attempt
to insert it.
After using the mechanical key, store it in
the electronic key. Carry the mechanical
key together with the electronic key. If the
electronic key battery is depleted or the
entry function does not operate properly,
you will need the mechanical key.
(  P.330)
NOTICE
●Do not crush the battery cover or use
a screwdriver to remove the battery
cover.
Forcibly removing the battery cover
may bend or damage the key.
●If the battery cover is frequently
removed, the battery cover may
become loose.
●When installing the ba
ttery, make sure
to check the direction of the battery.
Installing the battery in the wrong
direction may cause the battery to
deplete rapidly.
●The surface of the card key may be
damaged, or its coating may peel off in
the following situations:
• The card key is carried together with hard objects, such as coins and keys.
• The card key is scraped with a sharp object, such as the tip of a mechanical
pencil.
• The surface of the card key is wiped with thinner or benzene.
Wireless remote control
A
B
C
Using the mechanical key
D
E

973-2. 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.65)
■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.
Depending on the open ing/closing state of
the soft top roof, the buzzer may be
delayed.
■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.65)
■Conditions affecting the operation of
the smart access system with push-but-
ton start or wireless remote control
 P.105
■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.330)
Replace the key battery with a new one if it
is depleted. ( P.297)
■If the battery is discharged
The doors cannot be locked and unlocked
Multi-information display/BeepUnlocking function
Exterior: Beeps 3 times
Interior: Pings once
Pushing the depres-
sion on the front edge
of the driver’s door
handle unlocks only
the driver’s door.
Pushing the depres-
sion on the front edge
of the passenger’s
door handle unlocks
both side doors.
Exterior: Beeps twice
Interior: Pings once
Pushing the depres-
sion on the front edge
of either door handle
unlocks both side
doors.

1023-2. Opening, closing and locking the doors and trunk
■Wireless remote control
Press and hold the switch.
A buzzer sounds.
■When the operation of the soft top roof
has not been completed
The trunk lid cannot be opened. Wait until
the soft top roof is fully opened or closed
before opening the trunk lid. ( P.126)
■Trunk light
The trunk light turns on when the trunk is
opened.
■Function to prevent the trunk being
locked with the electronic key inside
●When both side doors are locked, clos-
ing the trunk lid with the electronic key
left inside the trunk will sound an alarm.
In this case, the trunk lid can be opened
by pressing the trunk release button on
the trunk lid.
●If the spare electronic key is put in the
trunk with both side doors locked, the key
confinement prevention function is acti-
vated so the trunk can be opened. In
order to prevent theft, take all electronic
keys with you when leaving the vehicle.
●If the electronic key is put in the trunk
with both side doors locked, the key may
not be detected depending on the loca-
tion of the key and the surrounding radio
wave conditions. In th is case, the key con-
finement prevention function cannot be
activated, causing the trunk to be locked
when the trunk lid is closed. Make sure to
check where the key is before closing the
trunk.
●The key confinement prevention function cannot be activated if either door is
unlocked. In this case, open the trunk
using the trunk opener switch.
●If the trunk lid is closed by a hand having
the electronic key when the both side
doors are locked, a warning buzzer may
sound. In this case, the trunk is not locked.
Do not close the trunk lid by a hand hav-
ing the electronic key.
■Internal trunk release lever
The trunk lid can be opened by pulling the
glow-in-the-dark lever located on the inside
of the trunk to the side.
The lever will continue to glow for some
time after the trunk lid is closed.
■If the smart access system with push-
button start or the wireless remote con-
trol does not operate properly
Use the trunk opener switch to unlock the
trunk. ( P.330)
Replace the key battery with a new one if it
is depleted. ( P.297)
■If a symbol indicating the trunk opens is
shown on the multi-information display
 P.99
■If the battery is discharged
The trunk cannot be locked and unlocked
using the smart access system with push-
button start or wireless remote control.
Lock or unlock the trunk using the mechan-
ical key. ( P.332)
■Customization
The trunk unlocking operation can be
changed. (Customizable features:
 P.367)
Using the trunk grip, lower the trunk
Closing the trunk