
96 3-1. Key information
LS500_OM_(U)_1810 3-1.Key information
The following keys  are provided with 
the vehicle.
Electronic keys• Operating the smart access system with 
push-button start ( 
P.111 )
• Operating the wireless remote control 
function ( 
P.98 )
Mechanical keys
Key number plate
Card key (electronic key) (if 
equipped)Operating the smart access system with 
push-button start (  P.111)
■
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 it is difficult to take out the mechanical 
key, push down the lock release button 
using a pen tip etc. If it is still difficult to 
pull it out, use a coin etc. ●
To store the mechanical key in the card 
key, insert it while pressing the lock 
release button.
●
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 acci-
dentally. Pressing a button may cause the 
electronic key to em it 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 about a year 
and a half.)
●
If the battery becomes low, an alarm will 
sound in the cabin and a message will be 
shown on the multi-information display 
when the engine is stopped.Keys
The keys
A
B
C
D 

973-1. Key information
LS500_OM_(U)_1810 3
Before driving ●
To reduce key battery depletion when the 
electronic key is to not be used for long 
periods of time, set the electronic key to 
the battery-saving mode. (  P.113)●
As the electronic ke y 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.
• 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.●
To avoid serious deterioration, do not 
leave the electronic ke y within 3 ft. (1 m) 
of the following electr ical appliances that 
produce a magnetic field:
•TVs
• Personal computers
• Cellular phones, cordless phones and 
battery chargers
• Recharging cellular  phones or cordless 
phones
• Table lamps
• Induction cookers ■
Replacing the battery
 P.399■
Confirmation of the number of regis-
tered keys
The number of keys already registered to 
the vehicle can be confirmed. Ask your 
Lexus dealer for details.
■
If “A New Key has been Registered 
Contact Your Dealer for Details” is 
shown on the multi-information display
This message will be displayed each time 
the driver’s door is opened when the doors 
are unlocked from the outside for approxi-
mately 10 days after a new electronic key 
has been registered.
If this message is disp layed but you have not 
had a new electronic key registered, ask 
your Lexus dealer to check if an unknown 
electronic key (other than those in your 
possession) has been registered. NOTICE■
To prevent key damage ●
Do not drop the keys, subject them to 
strong shocks or bend them. ●
Do not expose the keys to high tem-
peratures for a long period of time. ●
Do not get the keys wet or wash them 
in an ultrasonic washer etc. ●
Do not attach metallic or magnetic 
materials to the keys or place the keys 
close to such materials. ●
Do not disassemble the keys. ●
Do not attach a sticker or anything else 
to the surface of the electronic key. ●
Do not place the keys near objects that 
produce magnetic fields, such as TVs, 
audio systems and induction cookers, 
or medical electrical equipment, such 
as low-frequency therapy equipment. ■
Carrying the electronic key on your 
person
Carry the electronic key 3.9 in. (10 cm) 
or more away from electric appliances 
that are turned on. Radio waves emitted 
from electric applianc es within 3.9 in. (10 
cm) of the electronic key may interfere 
with the key, causing the key to not func-
tion properly.
■
In case of a smart access system with 
push-button start malfunction or 
other key-rela ted problems
 P.433
■
When an electronic key is lost
 P.432
■
Handling the card key (if equipped)
●
Do not apply excess force when insert-
ing the mechanical key into the card 
key. Doing so may damage the card 
key. 

1013-2. Opening, closing and  locking the doors and trunk
LS500_OM_(U)_1810 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.433)
Replace the key battery with a new one if it 
is depleted. (  P.399)
■
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.433)Multi-information 
display/Beep Unlocking 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. 

1033-2. Opening, closing and  locking the doors and trunk
LS500_OM_(U)_1810 3
Before driving When the door is unlocked, the inside lock 
button will pop up.
■
Locking the front doors from the outside 
without a key
1 Push down the inside lock button.
2 Close the door.
The door cannot be locked if the engine 
switch is in ACCESSORY or IGNITION 
ON mode, or the electronic key is left 
inside the vehicle. However, the key may not 
be detected correctly and the door may be 
locked. ■
Door closer (if equipped)
In the event that a door  is left slightly open, 
the door closer will automatically close it to 
the fully closed position. ●
The door closer will operate regardless 
of the engine switch mode.●
The door closer will not function if the 
door has been clos ed while pulling the 
inside or outside door handle.●
The door can be opened by pulling the 
inside or outside door handle, even when 
the door closer is operating (except 
when the lock button is in the lock posi-
tion or the child-protector lock is set).
●
A motor sound may be heard for several 
seconds after the door closer closes the 
door. This does not indicate a malfunc-
tion.
■
Open door warning buzzer
If a door or the trunk is not fully closed, a 
buzzer will sound when the vehicle speed 
reaches 3 mph (5 km/h).
The open door(s) or trunk is indicated on 
the multi-information display. The door cannot be opened from 
inside the vehicle when the lock is set. WARNING■
Door closer (if equipped)
In the event that a d oor is left slightly 
open, the door closer will automatically 
close it to the fully closed position. It 
takes several second s before the door 
easy closer begins to operate.
If the child-protector lock is set, the door 
closer will not stop during operation even 
if an attempt is made to open the door 
from inside the vehicle. Be careful not to 
catch fingers or anything else in the door. 
Failure to do so may result in serious 
injury.
NOTICE■
To prevent door closer malfunction (if 
equipped)
Do not frequently repeat opening and 
closing of doors, or apply excessive force 
to a door while the door closer is operat-
ing.
Rear door child-protector lock 

110 3-2. Opening, closing and  locking the doors and trunk
LS500_OM_(U)_1810 If the rear bumper has been touched for a 
while, wait for a short time before 
attempting to operate the Hands Free 
Power Trunk Lid again.●
When standing excessively close to the 
rear bumper●
When an external  radio wave source 
interferes with the communication 
between the electronic key and the vehi-
cle (  P.113)●
When the vehicle is parked near an elec-
trical noise source which affects the sen-
sitivity of the Hands Free Power Trunk Lid, 
such as a pay parking spot, gas station, 
electrically heated road, or fluorescent 
light●
When the vehicle is near a TV tower, 
electric power plant,  radio station, large 
display, airport or other facility that gen-
erates strong radio waves or electrical 
noise●
When a large amount  of water is applied 
to the rear bumper, such as when the 
vehicle is being washed or in heavy rain●
When mud, snow, ice,  etc. is attached to 
the rear bumper●
When the vehicle has been parked for a 
while near objects that may move and 
contact the rear bumper, such as plants●
When an accessory is installed to the rear 
bumper
If an accessory has been  installed, turn the 
Hands Free Power Trunk Lid (kick sensor) 
operation setting off.
■
Preventing unintentional operation of 
the Hands Free Power Trunk Lid (if 
equipped)
When an electronic ke y is in the operation 
detection area, the Ha nds Free Power Trunk 
Lid may operate unintentionally, so be care-
ful in the following situations:
●
When a large amount  of water is applied 
to the rear bumper, such as when the 
vehicle is being washed or in heavy rain
●
When dirt is wiped off the rear bumper
●
When a small animal or small object, such 
as a ball, moves under the rear bumper ●
When an object is moved from under the 
rear bumper ●
If someone is swinging their legs while sit-
ting on the rear bumper ●
If the legs or another part of someone’s 
body contacts the rear bumper while 
passing by the vehicle ●
When the vehicle is parked near an elec-
trical noise source  which affects the sen-
sitivity of the Hands Free Power Trunk Lid, 
such as a pay parking spot, gas station, 
electrically heated road, or fluorescent 
light ●
When the vehicle is near a TV tower, 
electric power plant, radio station, large 
display, airport or ot her facility that gen-
erates strong radio waves or electrical 
noise ●
When the vehicle is parked in a place 
where objects such as  plants are near the 
rear bumper ●
If luggage, etc. is set near the rear 
bumper ●
If accessories or a vehicle cover is 
installed/removed ne ar the rear bumper●
When the vehicle is being towed
To prevent unintentiona l operation, turn the 
Hands Free Power Trunk Lid (kick sensor) 
operation setting off. ■
Open door warning buzzer
 P.103 ■
Customization
Some functions can be customized. 
(  P.466)
The trunk opener switch can be tem-
porarily disabled to protect luggage 
stored in the trunk against theft.
Turn the main switch in the glove box 
off to disable the trunk opener.Luggage security system 

112 3-2. Opening, closing and  locking the doors and trunk
LS500_OM_(U)_1810 ■
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 operated.)
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 or changing 
engine switch modes
The system can be operated when the 
electronic key is inside the vehicle. ■
Alarms and warning messages
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. 
(  P.425)
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 elec-
tronic key from the vehicle and lock the 
doors again.
■
Battery-saving function
The battery-saving function will be acti-
vated in order to prevent the electronic key 
battery and the battery from being dis-
charged while the vehicle is not in operation 
for a long time.
●
In the following situations, the smart 
access system with pu sh-button start may A
B
C Situation Correction 
procedure
An attempt was made to 
lock the vehicle while a 
door was open. Close all of the 
doors and lock 
the doors 
again.
The trunk was closed 
while the electronic key 
was still inside the trunk 
and all the doors were 
locked. Retrieve the 
electronic key 
from the trunk 
and close the 
trunk lid.
Situation Correction 
procedure
The engine switch was 
turned to ACCESSORY 
mode while the driver’s 
door was open (The 
driver’s door was opened 
when the engine switch 
was in ACCESSORY 
mode). Turn the engine 
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. 

1133-2. Opening, closing and  locking the doors and trunk
LS500_OM_(U)_1810 3
Before driving take some time to unlock the doors.
• The electronic key has been left in an 
area of approximately  6 ft. (2 m) of the 
outside of the vehicle for 10 minutes or 
longer.
• The smart access system with push-but-
ton start has not been used for 5 days or 
longer.●
If the smart access system with push-but-
ton start has not been  used for 14 days or 
longer, the doors cannot be unlocked at 
any doors except the driver’s door. In this 
case, take hold of the driver’s door han-
dle, or use the wireless remote control or 
the mechanical key, to unlock the doors.■
Turning an electronic key to bat-
tery-saving mode
When battery-saving mode is set, battery 
depletion is minimized by stopping the elec-
tronic key from re ceiving radio waves.
Press   twice while pressing and holding 
. Confirm that the electronic key indica-
tor flashes 4 times.
While the battery-saving mode is set, the 
smart access system with push-button start 
cannot be used. To cancel the function, 
press any of the electronic key buttons.
■
Conditions affe cting operation
The smart access system with push-button 
start uses weak radio waves. In the following 
situations, the communication between the 
electronic key and the vehicle may be 
affected, preventing  the smart access sys-
tem with push-button start, wireless remote 
control and engine immobilizer system 
from operating properly. (Ways of coping: 
 P.433)
●
When the electronic key battery is 
depleted
●
Near a TV tower, electric power plant,  gas station, radio stat ion, large display, 
airport or other fac ility that generates 
strong radio waves or electrical noise ●
When carrying a portable radio, cellular 
phone, cordless phone or other wireless 
communication device ●
When the electronic key is in contact 
with, or is covered by the following metal-
lic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil 
inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs ●
When other wireless keys (that emit radio 
waves) are being used nearby ●
When carrying the electronic key 
together with the following devices that 
emit radio waves
• Another vehicle’s electronic key or a 
wireless key that  emits radio waves
• Personal computers or personal digital 
assistants (PDAs)
• Digital audio players
• Portable game systems ●
If window tint with  a metallic content or 
metallic objects are attached to the rear 
window ●
When the electronic key is placed near a 
battery charger or electronic devices ●
When the vehicle is parked in a pay park-
ing spot where radio waves are emitted. ■
Note for the entry function ●
Even when the electronic key is within the 
effective range (detection areas), the sys-
tem may not operate properly in the fol-
lowing cases:
• The electronic key is too close to the win-
dow or outside door handle, near the 
ground, or in a high place when the doors 
are locked or unlocked.
• The electronic key is near the ground or 
in a high place, or too close to the center 
of the rear bumper 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  

114 3-2. Opening, closing and  locking the doors and trunk
LS500_OM_(U)_1810 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.