2020 LEXUS LS500H change key battery

1013-2. Opening, closing and locking the doors and trunk
3
Before driving
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, all the 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 indicate that the win-
dows and moon roof or panoramic moon
roof 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.
■When the doors cannot be locked by the
lock sensor on the upper part of the
door handle
When the doors cannot be locked even if
the lock sensor on th e upper part of the
door handle is touched by a finger, touch
the lock sensor with the palm.
If you are wearing gloves, remove them.
■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.113
■If the smart access system with
push-button start or the wireless remote
control does not operate properly
Use the mechanical key to lock and unlock
the doors. ( P.437)
Replace the key battery with a new one if it
is depleted. ( P.403)
■If the battery is discharged
The doors cannot be locked and unlocked
using the smart access system with
push-button start or wireless remote con-
trol. Lock or unlock the doors using the
mechanical key. ( P.437)
Multi-information
display/BeepUnlocking function
Exterior: Beeps 3 times
Interior: Pings once
Holding the driver’s
door handle unlocks
only the driver’s
door.
Holding any of the
passenger door
handles unlocks all
the doors.
Exterior: Beeps twice
Interior: Pings once
Holding a door han-
dle unlocks all the
doors.

1143-2. Opening, closing and locking the doors and trunk
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.)
●Touching the door lock sensor while
wearing gloves may delay or prevent lock
operation.
●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.113)
●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 all the doors.
●The lock sensor may not work properly if
it comes into contact with ice, snow, mud,
etc. Clean the lock sensor and attempt to
operate it again.
●A sudden approach to the effective
range or door handle may prevent the
doors from being unlocked. In this case,
return the door handle to the original
position and check that the doors unlock
before pulling the door handle again.
●If there is another electronic key in the
detection area, it may take slightly longer
to unlock the doors after the door handle
is gripped.
■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.
●Setting the electronic key to battery-sav-
ing mode helps to reduce key battery
depletion. ( P.113)
■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 electr onic 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 pre-
vention function may not operate.)
●Do not leave the electr onic key inside the
trunk.

1654-2. Driving procedures
4
Driving
4-2.Driving procedures
1Press the parking brake switch to
check that the parking brake is set.
(P.176)
The parking brake indicator will come on.
2 Firmly depress the brake pedal.
and a message will be displayed on
the multi-information display.
If it is not displayed, the engine cannot be
started.
3 Press the engine switch shortly and
firmly.
When operating the engine switch, one
short, firm press is enough. It is not neces-
sary to press and hold the switch.
The engine will crank until it starts or for up
to 30 seconds, whichever is less.
Continue depressing the brake pedal until
the engine is completely started.
The engine can be started from any engine
switch mode.
■Engine switch illumination
According to the situation, the engine
switch illumination operates as follows.
●When a door is opened, or the engine
switch mode is changed from ACCES-
SORY or IGNITION ON mode to off,
the engine switch illumination slowly
blinks.
●When depressing the brake pedal with
carrying the electronic key on your per-
son, the engine switch illumination rapidly
blinks.
●When the engine sw itch is in ACCES-
SORY or IGNITION ON mode, the
engine switch illumination illuminates.
■If the engine does not start
●The engine immobilizer system may not
have been deactivated. ( P.63)
Contact your Lexus dealer.
●If a message related to start-up is shown
on the multi-information display, read the
message and follow the instructions.
■If the battery is discharged
The engine cannot be started using the
smart access system with push-button start.
Refer to P.439to restart the engine.
■Electronic key battery depletion
 P.96
■Conditions affecting operation
 P.113
■Notes for the entry function
 P.113
■Steering lock function
●After turning the engine switch off and
opening and closing the doors, the steer-
ing wheel will be lock ed due to the steer-
ing lock function. Operating the engine
switch again automatically cancels the
steering lock.
●When the steering lock cannot be
released, “Push Engine Switch While
Turning Steering Whee l in Either Direc-
tion” will be displayed on the multi-infor-
mation display.
Press the engine switch shortly and firmly
Engine (ignition) switch
Performing the following opera-
tions when carrying the electronic
key on your person starts the
engine or changes engine switch
modes.
Starting the engine

1664-2. Driving procedures
while turning the steering wheel left and
right.
●To prevent the steering lock motor from
overheating, operation of the motor may
be suspended if the engine is turned on
and off repeatedly in a short period of
time. In this case, refrain from operating
the engine switch. After about 10 sec-
onds, the steering lock motor will resume
functioning.
■Electronic key battery
 P.403
■Operation of the engine switch
●If the switch is not pressed shortly and
firmly, the engine switch mode may not
change or the engine may not start.
●If attempting to restart the engine imme-
diately after turning the engine switch off,
the engine may not start in some cases.
After turning the engine switch off, please
wait a few seconds before restarting the
engine.
■Customization
If the smart access sy stem with push-button
start has been deactivated in a customized
setting, refer to P.437.
1Stop the vehicle completely.
2
If the parking brake is in manual
mode, set the parking brake.
( P.176)
3
Shift the shift position to P. ( P.171)
Check that the shift position indicator
shows P and the parking brake indicator is
illuminated.
4Press the engine switch.
The engine will stop, and the meter display
will be extinguished (the shift position indi-
cator will be extinguished a few seconds
after the meter display).
5Release the brake pedal and check
that “ACCESSORY” or “IGNI-
TION ON” is not shown on the
meter.
WARNING
■When starting the engine
Always start the engine while sitting in
the driver’s seat. Do not depress the
accelerator pedal while starting the
engine under any circumstances.
Doing so may cause an accident result-
ing in death or serious injury.
■Caution while driving
If engine failure occurs while the vehicle
is moving, do not lock or open the doors
until the vehicle reaches a safe and com-
plete stop. Activation of the steering lock
in this circumstance may lead to an acci-
dent, resulting in death or serious injury.
NOTICE
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start
or stalls frequently, have your vehicle
checked by your Lexus dealer immedi-
ately.
■Symptoms indicating a malfunction
with the engine switch
If the engine switch seems to be operat-
ing somewhat differently than usual, such
as the switch sticking slightly, there may
be a malfunction. Contact your Lexus
dealer immediately.
Stopping the engine

4387-2. Steps to take in an emergency
■Key linked functions
1
Closes the windows and the moon
roof
* or panoramic moon roof* (turn
and hold)
2
Opens the windows and the moon
roof
* or panoramic moon roof* (turn
and hold)
These settings must be customized at your
Lexus dealer.
*: If equipped
1Depress the brake pedal.
2
Touch the Lexus emblem side of the
electronic key to the engine switch.
When the electronic key is detected, a
buzzer sounds and the engine switch will
turn to IGNITION ON mode.
When the smart access system with
push-button start is deactivated in custom-
ization setting, the engine switch 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.
In the event that the engine 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 as you nor-
mally do when stop ping the engine.
■Electronic key battery
As the above procedure is a temporary
measure, it is recommended that the elec-
tronic key battery be replaced immediately
when the battery is depleted. (P.403)
■Changing engine switch modes
Release the brake pe dal 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.168)
WARNING
■When using the mechanical key and
operating the power windows or the
moon roof or panoramic moon roof
Operate the power window or the moon
roof or panoramic moon roof after
checking to make sure that there is no
possibility of any passenger having any of
their body parts caught in the window or
the moon roof or panoramic moon roof.
Also, do not allow ch ildren to operate the
mechanical key. It is possible for children
and other passengers to get caught in
the power window or the moon roof or
panoramic moon roof.
Starting the engine

501Alphabetical Index
Dimension ...................................................... 450
Dinghy towing.................................................164
DisplayCenter Display............................................. 310
Dynamic radar cruise control with full-speed range ........................................ 241
Head-up display ........................................... 87
Intuitive parking assist.............................. 259
LTA (Lane Tracing Assist).................... 232
Multi-information display ..........................80
Parking Support Brake function (rear pedestrians) ..............................................289
RCD (Rear Camera Detection) ........ 270
RCTA .............................................................. 266
Warning message..................................... 429
Distance until next engine oil change ...74, 79
Do-it-yourself maintenance .................... 369
Door courtesy lights ................................... 334
Door lock Doors................................................................ 100
Smart access system with push-button start ..................................................................... 111
Wireless remote control........................... 98
Doors Automatic door lock ing and unlocking
system ........................................................... 104
Door closer ................................................... 103
Door glasses ..................................................143
Door lock........................................................ 100
Open door warning bu zzer ........ 101, 103
Outside rear view mirrors ........................141
Rear door child-protectors ................... 103
Drive distance .................................................. 82
Drive info 1/Drive info 2 .............................. 82
Driver’s seat position memory Driving position memory........................ 130
Memory recall function ............................133
Power easy access system .................... 130
Drive-start control ....................................... 155
Driving Break-in tips .................................................. 155 Correct driving posture ............................ 23
Driving mode select switch .................. 292
Procedures .................................................... 154
Winter drive tips ........................................ 303
Driving information disp lay ........................ 82
Driving position memory........................... 130 Memory recall function............................ 133
Power easy access system .................... 130
Driving range ................................................... 82
Driving support system information display ............................................................................. 85
DRS (Dynamic Rear Steering) .............. 298
Dynamic radar cruise control with full-speed range .............................. 238, 241Warning message ..................................... 249
Dynamic Rear Steering (DRS) .............. 298
E
ECB (Electronically Controlled Brake Sys-
tem) ................................................................ 297
Eco Driving Indicator............................. 83, 91
Eco Driving Indicator Light ........................ 83
EDR (Event data recorder) ............................7
Elapsed time ..................................................... 82
Electric Power Steering (EPS) .............. 298 Warning light ............................................... 422
Electronic key .................................................. 96 Battery-saving function.............................. 112
If the electronic key does not operate properly ....................................................... 437
Replacing the battery .............................. 403
Electronic roof sunshade Jam protection function ........................... 150
Operation ....................................................... 148
Electronically Controlled Brake System (ECB) ............................................................ 297
Electronically modulated air suspension .......................................................................... 294
Emergency flashers ..................................... 410
Emergency, in case of If a warning buzzer sounds.................... 419
If a warning light turns on........................ 419

504Alphabetical Index
InitializationItems to initialize .........................................484
Maintenance .....................................368, 381
Power windows............................................ 143
Tire pressure warning system ............. 392
Inside door handle lights .......................... 334
Inside rear view mirror ............................... 140
Instrument panel light control ........... 75, 79
Intercooler...................................................... 383
Intercooler coolant Capacity ......................................................... 453
Checking ....................................................... 382
Interior lights.................................................. 334 Front interior light ...................................... 334
Rear interior light ....................................... 334
Intuitive parking assist..................... 257, 259 Function .......................................................... 259
Warning message........................... 261, 277
J
JackPositioning a floor jack............................ 375
Jam protection function Electronic roof sunshade........................ 150
Moon roof .......................................................146
Panoramic moon roof.............................. 150
Power trunk opener and closer .......... 109
Power windows............................................ 143
Rear door sunshade ............................... 350
K
Keyless entrySmart access system with push-button start ..................................................................... 111
Wireless remote control........................... 98
Keys Battery-saving function ..............................112
Electronic key ................................................. 96
Engine switch................................................ 165
If the electronic key does not operate properly....................................................... 437 If you lose your keys .................................436
Key number plate .........................................96
Keyless entry .......................................... 100, 111
Mechanical key .............................................. 96
Replacing the battery .............................. 403
Warning buzzer ............................................ 112
Wireless remote control ...........................98
Knee airbags .................................................... 29
L
Lane change assist function .................... 226
Lane Tracing Assist (LTA) Operation ...................................................... 226
Warning messages...................................238
Language (multi-information display) ... 85
LATCH anchors ............................................. 53
LDH (Lexus Dynamic Handling system) .......................................................................... 298
Lever Auxiliary catch lever .................................375
Hood lock release lever .........................375
Internal trunk release lever..................... 109
Shift lever ......................................................... 169
Turn signal lever ...........................................175
Wiper lever .................................................... 185
Lexus climate concierge ............................315
Lexus Dynamic Handling system (LDH) .......................................................................... 298
Lexus Enform Safety Connect.................. 58
Lexus Safety System + 2.0 AHB (Automatic High Beam) ............. 183
Dynamic radar cruise control with full-speed range ........................................241
LTA (Lane Tracing Assist) .................... 226
PCS (Pre-Collision System) ..................216
RSA (Road Sign Assist)..........................238
Lexus Safety System + A AHB (Automatic High Beam) ............. 183
Dynamic radar cruise control with full-speed range ........................... 238, 241
FCTA (Front Cross Traffic Alert)...... 223
LTA (Lane Tracing Assist) .................... 226