2018 LEXUS LS500 start stop button

92 3-1. Key information
LS500_OM_OM50F54U_(U) 3-1.Key information
The following keys are provided with
the vehicle.
Electronic keys• Operating the smart access system with
push-button start ( →
P.107 )
• Operating the wireless remote control
function ( →
P.94 )
Mechanical keys
Key number plate
Card key (electronic key) (if
equipped)Operating the smart access system with
push-button start ( → P.107)
■
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

973-2. Opening, closing and locking the doors and trunk
LS500_OM_OM50F54U_(U) 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.60)■
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 the surface 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.60) ■
Conditions affecting the operation of
the smart access system with push-but-
ton start or wireless remote control
→ P.108 ■
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.436)
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.436)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_OM50F54U_(U) 3
Before driving ■
Smart access system with
push-button start
While carrying the electronic key,
press the button. If the vehicle is equipped with a power
trunk opener and closer, the trunk lid will
fully open.
If the button is presse d while the trunk lid is
opening, the trunk lid will stop moving.
When all the doors are unlocked using
one of the following methods, the trunk
can be opened without the electronic
key:
 Entry function
 Wireless remote control
 Door lock switches
 Automatic door unlocking system
 Mechanical key
■
Wireless remote control
Press and hold the switch. A buzzer sounds.
If the vehicle is equipped with a power
trunk opener and closer, the trunk lid will
fully open.
If the button is presse d while the trunk lid is
opening, the trunk lid will stop moving.
■
Hands Free Power Trunk Lid (if
equipped)
1 While carrying an electronic key,
stand slightly away from the vehicle,
move a foot under the center of the
rear bumper and then pull it back. The trunk lid will not start operating while a
foot is detected under the rear bumper.
If another electronic key for your vehicle is
in the vehicle, it may take slightly longer
than normal for the trunk lid to start oper-
ating.
2 A buzzer will sound and the trunk
lid will fully open/close. If a foot is moved under the rear bumper
while the trunk lid is opening, the trunk lid
will stop moving.
If a foot is moved under the rear bumper

1053-2. Opening, closing and locking the doors and trunk
LS500_OM_OM50F54U_(U) 3
Before driving ■
Fall-down protection function (vehicles
with power trunk opener and closer)
While the trunk lid is opening automatically,
applying excessive force to it will stop the
opening operation to prevent the trunk lid
from rapidly falling down. ■
Jam protection function (vehicles with
power trunk opener and closer)
While the trunk lid is closing automatically,
the trunk lid will stop closing and open if
something gets caught. ■
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 lid to the side.
The lever will continue to glow for some
time after the trunk lid is closed.
■
Using the mechanical key
The trunk can be also opened using the
mechanical key. ( → P.436)
If the trunk is unlocked using the mechani-
cal key, the power trunk lid and trunk easy
closer will not be operational. To return
them to an operational state, fully close the
trunk lid by hand. ■
If the smart access system with
push-button start or the wireless remote
control does not operate properly
Use the mechanical key to unlock the trunk.
( → P.436)
Replace the key battery with a new one if it
is depleted. ( → P.403)
■
Situations in which the Hands Free
Power Trunk Lid may operate uninten-
tionally (if equipped)
In the following situations, the Hands Free
Power Trunk Lid may operate unintention-
ally.
To prevent unintentional operation, do not leave the electronic key in the trunk and
keep it out of the effective range (detection
area) or disable the Hands Free Power
Trunk Lid (kick sensor). ●
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 ●
When snow, etc. is removed 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 grass, move 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
■
Situations in which the Hands Free
Power Trunk Lid may not operate prop-
erly (if equipped)
●
In the following situations, the Hands Free
Power Trunk Lid may not operate prop-
erly:
• If the rear bumper is strongly hit with a
foot or is touched for a while
Make sure not to touch the rear bumper

108 3-2. Opening, closing and locking the doors and trunk
LS500_OM_OM50F54U_(U) ●
When an interior alarm sounds continu-
ously
■
If “Key Detected in Vehicle” is shown on
the multi-inform ation 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.
■
Battery-saving function
The battery-saving fu nction will be acti-
vated in order to prevent the electronic key
battery and the battery from being dis-
charged while the vehicl e is not in operation
for a long time.
●
In the following situations, the smart
access system with pu sh-button start may 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 cann ot be unlocked at
any doors except the dr iver’s door. In this
case, take hold of th e 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 receiving 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 affecting 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.436)
●
When the electronic key battery is
depleted
●
Near a TV tower, electric power plant, 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.

110 3-2. Opening, closing and locking the doors and trunk
LS500_OM_OM50F54U_(U) stolen.)
• Set the electronic key to battery-saving
mode to disable the smart access system
with push-button start. ( → P.108)●
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 syst em 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.108)■
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 electronic 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 electronic key inside the
trunk. The key confinement prevention function
may not operate, depending on the loca-
tion of the key (the inside edge of the
Trunk), conditions (i nside a metal bag,
close to metallic objects) and the radio
waves in the surrounding area. ( → P.104)■
If the smart access system with
push-button start does not operate
properly ●
Locking and unloc king the doors and
trunk: → P.436●
Starting the engine: → P.437■
Customization
Some functions can be customized.
( → P.468) ■
If the smart access system with
push-button start has been deactivated
in a customized setting ●
Locking and unloc king the doors and
opening the trunk:
Use the wireless remote control or
mechanical key. ( → P.96, 103, 436)●
Starting the engine and changing engine
switch modes: → P.437●
Stopping the engine: → P.161

1614-2. Driving procedures
LS500_OM_OM50F54U_(U) 4
Driving 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.436. 1 Stop the vehicle completely.
2 If the parking brake is in manual
mode, set the parking brake.
( → P.170)
3 Shift the shift position to P.
( → P.166) Check that the shift position indicator
shows P. ( → P.165)
4 Press 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).
5 Release 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

1734-2. Driving procedures
LS500_OM_OM50F54U_(U) 4
Driving
Press the brake hold switch to turn the
system on The brake hold standby indicator (green)
comes on. While the system is holding
the brakes, the brake hold operated indica-
tor (yellow) comes on.
■
Brake hold system operating conditions
The brake hold system cannot be turned on
in the following conditions:
●
The driver’s door is not closed.
●
The driver is not wearing the seat belt.
If any of the conditions above are detected
when the brake hold system is enabled, the
system will turn off and the brake hold
standby indicator light will go off. In addi-
tion, if any of the conditions are detected
while the system is holding the brake, a
warning buzzer will sound and a message will be shown on the multi-information dis-
play. The parking brake will then be set
automatically. ■
Brake hold function ●
If the brake pedal is left released for a
period of about 3 mi nutes after the sys-
tem has started holding the brake, the
parking brake will be set automatically. In
this case, a warning buzzer sounds and a
message is shown on the multi-informa-
tion display. ●
To turn the system off while the system is
holding the brake, firmly depress the
brake pedal and press the button again. ●
The brake hold function may not hold the
vehicle when the vehicle is on a steep
incline. In this situation, it may be neces-
sary for the driver to apply the brakes. A
warning buzzer will sound and the
multi-information display will inform the
driver of this situat ion. If a warning mes-
sage is shown on the multi-information
display, read the message and follow the
instructions. ■
When the parking brake is set automati-
cally while the system is holding the
brakes
Perform any of the following operations to
release the parking brake. ●
Depress the accelerator pedal. (The
parking brake will not be released auto-
matically if the seat belt is not fastened.) ●
Operate the parking brake switch with
the brake pedal depressed.
Make sure that the pa rking brake indicator
light goes off. ( → P.170)
■
When an inspection at your Lexus
dealer is necessary
When the brake hold standby indicator
(green) does not illuminate even when the
brake hold switch is pressed with the brake
hold system operating conditions met, the
system may be malfun ctioning. Have the
vehicle inspected at your Lexus dealer.Brake Hold The brake hold system keeps the
brake applied when the shift posi-
tion is in D, M or N with the system
on and the brake pedal has been
depressed to stop the vehicle. The
system releases the brake when the
accelerator pedal is depressed with
the shift position in D or M to allow
smooth start off.
Enabling the system A
B