2020 Lexus LC500h alarm

1163-2. Opening, closing and locking the doors and trunk
■Effective range (areas within which the
electronic key is detected)When locking or unlocking the doors
The system can be operated when the
electronic key is within about 2.3 ft. (0.7
m) of an outside door handle. (Only the
doors detecting the key can be oper-
ated.)
When opening the trunk
The system can be operated when the
electronic key is within about 2.3 ft. (0.7
m) of the trunk release button.
When starting the engine tem> or changing engine switch switch> modes
The system can be operated when the
electronic key is inside the vehicle.
■If an alarm sounds or a warning message
is displayed
An alarm sounds and warning messages
are displayed on the multi-information dis-
play to protect against unexpected acci-
dents or theft of the vehicle resulting from
erroneous operation. When a warning mes-
sage is displayed, take appropriate mea-
sures based on the displayed message.
When only an alarm sounds, circumstances
and correction procedures are as follows.
●When an exterior alarm sounds once for
5 seconds
●When an interior alarm sounds continu-
ously
■If “Key Detected in Vehicle” is shown on
the multi-information display
An attempt was made to lock the doors
using the smart access system with push-
button start while the electronic key was still
inside the vehicle. Retrieve the electronic
key from the vehicle and lock the doors
again.
A
B
C
SituationCorrection proce-
dure
The trunk was
closed while the
electronic key was
still inside the trunk
and both side doors
were locked.
Retrieve the elec-
tronic key from the
trunk and close the
trunk lid.
An attempt was
made to lock the
vehicle while a door
was open.Close both side
doors and lock the
doors again.
SituationCorrection proce-dure
The engine switch
was
turned to ACCES-
SORY mode while
the driver’s door was
open (or the driver’s
door was opened
while the engine
switch switch> was in
ACCESSORY
mode).
Turn the engine
switch switch> off and close
the driver’s door.
The engine switch
was
turned off while the
driver’s door was
open.
Close the driver’s
door.

1183-2. Opening, closing and locking the doors and trunk
• The electronic key is near the ground or in a high place, or too close to the rear
bumper center when the trunk is opened.
• The electronic key is on the instrument panel, rear package tray or floor, or in the
door pockets or glove box when the
engine is started or
engine switch modes are
changed.
●Do not leave the electronic key on top of
the instrument panel or near the door
pockets when exiting the vehicle.
Depending on the radio wave reception
conditions, it may be detected by the
antenna outside the cabin and the doors
will become lockable from the outside,
possibly trapping the electronic key
inside the vehicle.
●As long as the electron ic key is within the
effective range, the doors may be locked
or unlocked by anyone. However, only
the doors detecting the electronic key
can be used to unlock the vehicle.
●Even if the electronic key is not inside the
vehicle, it may be possible to start the
engine if the electronic
key is near the window.
●The doors may unlock or lock if a large
amount of water spla shes on the door
handle, such as in the rain or in a car
wash, when the electronic key is within
the effective range. (The doors will auto-
matically be locked after approximately
60 seconds if the d oors are not opened
and closed.)
●If the wireless remote control is used to
lock the doors when the electronic key is
near the vehicle, there is a possibility that
the door may not be unlocked by the
entry function. (Use the wireless remote
control to unlock the doors.)
●When the lock operation is performed
using the lock sensor, recognition signals
will be shown up to two consecutive
times. After this, no recognition signals
will be given.
●If the door handle becomes wet while the
electronic key is within the effective
range, the door may lock and unlock
repeatedly. In this case, follow the follow-
ing correction procedures to wash the vehicle:
• Place the electronic key in a location 6 ft. (2 m) or more away from the vehicle.
(Take care to ensure that the key is not
stolen.)
• Set the electronic key to battery-saving
mode to disable the smart access system
with push-button start. ( P.117)
●If the electronic key is inside the vehicle
and a door handle becomes wet during a
car wash, a message may be shown on
the multi-information display and a
buzzer will sound outside the vehicle. To
turn off the alarm, lock both side doors.
●If an outside door handle is not retracted
during a car wash, a door may be opened
or an outside door handle may be dam-
aged. Make sure that the outside door
handles are retracted before using the
car wash.
●A sudden handle operation or a handle
operation immediately after entering the
effective range may prevent the doors
from being unlocked. Touch the door
unlock sensor and check that the doors
are unlocked before pulling the door
handle again.
●Unlocking the vehicle may take more
time if another electronic key is within the
effective range.
■When the vehicle is not driven for
extended periods
●To prevent theft of the vehicle, do not
leave the electronic key within 6 ft. (2 m)
of the vehicle.
●The smart access system with push-but-
ton start can be deactivated in advance.
■To operate the system properly
●Make sure to carry the electronic key
when operating the system. Do not get
the electronic key too close to the vehicle
when operating the system from the out-
side of the vehicle.
Depending on the position and holding
condition of the elec tronic key, the key
may not be detected correctly and the
system may not operate properly. (The
alarm may go off accidentally, or the door
lock prevention function may not oper-
ate.)

3637-2. Steps to take in an emergency
7
When trouble arises
cables and a second vehicle with a 12-
volt battery, you can jump start your
vehicle using the following procedure.
1Confirm that the electronic key
(including the card key) is being
carried.
When connecting the jumper (or booster)
cables, depending on the situation, the
alarm may activate and doors locked.
( P.71)
2 Open the hood ( P.294) and
open the fuse box cover.
Push the tab in and lift the lid off.
LC500
LC500h
3 Open the exclusive jump starting
terminal cover.
LC500
LC500h
4 Connect a positive jumper cable clamp to on your vehicle and connect the
clamp on the other end of the positive cable to on the second vehicle.
Then, connect a negative cable clamp to on the second vehicle and con-
nect the clamp at the other end of the negative cable to .
A
B
C
D

4018-2. Customization
8
Vehicle specifications
■Wireless remote control (P.106)
■Driving position memory ( P.124)
■Steering wheel ( P.129)
■Outside rear view mirrors ( P.131)
FunctionDefault settingCustomized setting
Wireless remote controlOnOffO
Unlocking operation
Driver’s door
unlocked in one step, both side
doors unlocked in two steps
Both side doors
unlocked in one step
OO
Trunk unlocking operationPress and hold (short)
One short press
O
Push twice
Press and hold (long)
Off
Alarm (panic mode)OnOffO
Reservation lockOnOffOO
FunctionDefault settingCustomized setting
Selecting the door linking driving
position memory with door unlock
operation
Driver’s doorBoth side doorsO
FunctionDefault settingCustomized setting
Auto tilt away functionTilt only
Telescopic only
OOTilt & telescopic
Off
FunctionDefault settingCustomized setting
Automatic mirror folding and
extending operationLinked to the
locking/unlock- ing of the doorsOff
OLinked to operation
of the engine switch
ABC
ABC
ABC
ABC

423What to do if... (Troubleshooting)
It is locked automatically to prevent
theft of the vehicle. ( P.149, 152)
 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.135)
 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.151, 154)
 The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.343)
 The parking brake indicator is on
Is the parking brake released? ( P.170)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.339, 348)
 Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds.
(
 P.70)
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.348)
 When a warning light turns on or a
warning message is displayed, refer
to P.339, 348.
 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.354)
 Try the procedure for when the vehi-
cle becomes stuck in mud, dirt, or
snow. ( P.374)
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
driving
An 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
The vehicle becomes stuck

424Alphabetical index
Alphabetical index
A
A/C ................................................................... 252Air conditioning filter ............................... 320
Automatic air conditioning system ... 252
Micro dust and pollen filter................... 257
ABS (Anti-lock Brake System).............. 235 Function .......................................................... 235
Warning light ...............................................340
Active rear wing........................................... 232
Adaptive Variable Suspension System235
Airbags ............................................................... 28 Airbag operating conditions................... 30
Airbag precautions for your child ........ 33
Correct driving posture .............................23
Curtain shield airbag operating condi- tions .................................................................. 30
Curtain shield airbag precautions ....... 33
Front passenger occupant classification system ............................................................. 38
General airbag precautions ................... 33
Locations of airbags.................................... 28
Modification and disposal of airbags . 35
Side airbag operating conditions ......... 30
Side airbag precautions ............................ 33
Side and curtain shield airbags operating conditions...................................................... 30
Side and curtain shield airbags precau- tions .................................................................. 33
SRS airbags ..................................................... 28
SRS warning light ......................................340
Air conditioning filter ................................. 320
Air conditioning system ............................ 252 Air conditioning filter ............................... 320
Automatic air conditioning system ... 252
Micro dust and pollen filter................... 257
Alarm ................................................................... 70 Alarm .................................................................. 70
Warning buzzer ......................................... 339
Anchor brackets ..................................... 44, 52
Antennas (smart access system with push- button start) ................................................... 115 Anti-lock Brake System (ABS).............. 235
Function ..........................................................235
Warning light .............................................. 340
Approach warning........................................ 212
Automatic headlight leveling system .... 176
Automatic High Beam ................................178
Automatic light control system................ 175
Automatic transmission .............................. 157 M mode ............................................................162
Paddle shift switches ......................... 161, 162
Snow mode...................................................... 161
Auxiliary net................................................... 264
Average fuel economy................................. 86
Average vehicle speed ................................ 86
B
Back-up lights Replacing light bulbs ................................328
Battery (12-volt battery) ........................... 303 Battery checking ....................................... 303
If the 12-volt battery is discharged ..... 361
Preparing and checking before winter.......................................................................... 242
Replacing ...................................................... 365
Warning light ...............................................339
Battery (traction batter y) ............................ 63
Blind Spot Monitor (BSM)....................... 223 Blind Spot Monitor function ................. 227
Rear Cross Traffic Alert function ....... 229
Brake Brake hold .......................................................173
Fluid...................................................................382
Parking brake ............................................... 170
Regenerative braking ...................................61
Warning light .................................. 339, 343
Warning message .....................................349
Brake assist .................................................... 235
Break-in tips.....................................................139
Brightness control Instrument panel light control.................83
BSM (Blind Spot Monitor)....................... 223 Blind Spot Monitor function ................. 227

Alphabetical index433
Stop lightsReplacing light bulbs................................ 328
Storage feature ............................................ 264
Stuck If the vehicle becomes stuck................ 374
Sunshade......................................................... 269
Sun visors ........................................................ 268
Switches “SOS” button .................................................. 54
Active rear wing switch .......................... 232
Automatic High Beam system..............178
Brake Hold switch ...................................... 173
BSM (Blind spot monitor) switch...... 224
Door lock switches ...................................... 110
Driving mode select switch .................... 216
Driving position memory switches ..... 124
Dynamic radar cruise control with full-speed range switch ............................... 207
Emergency flashers switch ...................330
Engine switch................................................ 148
EV drive mode switch ............................. 155
Garage door opener switches .......... 270
Heated steering wheel switch............. 259
HUD (Head-up display) switch.............. 91
Ignition switch.......................................148, 151
Instrument panel light control switch.. 83
Intuitive parking assist switch.................218
Light switches ................................................ 175
LKA (Lane-Keeping Assist) switch ....201
Meter control switches ..............................85
Outside rear view mirror switches ...... 131
Paddle shift switches .... 161, 162, 167, 168
Parking brake switch .................................170
PCS OFF switch ..........................................194
Power door lock switch ............................ 110
Power switch .................................................. 151
Power window switches ..........................134
Rear window and outside rear view mir- ror defoggers switch ............................ 252
Seat heater switches ................................ 259
Seat ventilator switches .......................... 259
Snow mode switch ............................ 161, 167 Tilt and telescopic steering control switch
............................................................................129
Tire pressure warning reset switch.... 310
Trunk opener main switch........................ 115
Trunk opener switch ................................... 113
Vehicle-to-vehicle distance switch... 207
VSC OFF switch .......................................236
Window lock switch.................................. 135
Windshield wiper and washer switch180
Windshield wiper de-icer switch.......256
T
Tachometer....................................................... 80 Variable red zone......................................... 82
Tail lights............................................................ 175 Light switch .....................................................175
Replacing light bulbs ................................328
Theft deterrent system Alarm................................................................... 70
Engine immobilizer system......................68
Theft prevention labels ................................. 71
Tire inflation pressure .................................. 317 Maintenance data ..................................... 383
Tire inflation pressure display function..........................................................................307
Warning light ...............................................344
Tire information ............................................ 387 Glossary ........................................................ 390
Size ................................................................... 388
Tire identification number..................... 388
Uniform Tire Quality Grading ........... 389
Tire pressure warning system ................ 307 Function ..........................................................307
Initializing......................................................... 310
Installing tire pres sure warning valves
and transmitters...................................... 309
Registering ID codes .................................312
Warning light ...............................................344
Tires...................................................................305 Chains ............................................................. 243
Checking ...................................................... 305
If you have a flat tire ..................................354