2021 Lexus GX460 ECU

791-3. Theft deterrent system
GX460_OM_OM60T19U_(U)
1
For safety and security
Alarm
The alarm uses light and sound to give an alert when an intrusion is detected.
The alarm is triggered in the following situations when the alarm is set:
●For the U.S.A.: A locked door or glass ha tch is unlocked or opened in any way
other than using the entry function, wi reless remote control or mechanical
key. (The doors will lock again automatically.)
●For Canada: A locked door or glass hatc h is unlocked or opened in any way
other than using the entry function or th e wireless remote control. (The doors
will lock again automatically.)
●The hood is opened.
Close the doors, glass hatch and hood,
and lock all the doors. The system will
be set automatically after 30 seconds.
The indicator light changes from being
on to flashing when the system is set.
Do one of the following to de activate or stop the alarms:
●Unlock the doors.
●Turn the engine switch to ACCESSOR Y or IGNITION ON mode, or start
the engine. (The alarm will be deactivat ed or stopped after a few seconds.)
The alarm
Setting the alarm system
Deactivating or stopping the alarm

811-3. Theft deterrent system
GX460_OM_OM60T19U_(U)
1
For safety and security
■Alarm memory function
After the alarm is activated, when you unlock any door using a entry function, wireless
remote control or mechanical key, the tail lights turn on for about 2 seconds to inform
you that the system was activated.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation of
the system cannot be guaranteed.

108
GX460_OM_OM60T19U_(U)3-2. Opening, closing and locking the doors
Side doors
◆Smart access system with push-button start
Carry the electronic key to enable this function.
Grip the driver’s door handle to
unlock the door. Grip the passen-
ger’s door handle to unlock all the
doors.
*
Make sure to touch the sensor on the
back of the handle.
The doors cannot be unlocked for
3 seconds after the doors are locked.
*: The door unlock settings can be changed. ( P. 113)
Touch the lock sensor (the indentatio n on the upper part or lower part of
the front door handle) to lock the doors.
Check that the door is securely locked.
◆Wireless remote control
Locks all the doors
Check that the door is securely
locked.
Unlocks all the doors
Pressing the button unlocks the
driver’s door. Pressing the button
again within 3 seconds unlocks the
other doors.
Press and hold to open the windows
and moon roof.
*
*
: These settings must be cust omized at your Lexus dealer.
The vehicle can be locked and unlock ed using the entry function, wireless
remote control, key or door lock switch.
Locking and unlocking the doors from the outside
1
2
1
2

GX460_OM_OM60T19U_(U)
1093-2. Opening, closing and locking the doors
3
Operation of each component
■Operation signals
Doors: A buzzer sounds and the emergency flashers flash to indicate that the doors have
been locked/unlocked. (Loc ked: once; Unlocked: twice)
Windows and moon roof: A buzzer sounds to indicate that the windows and moon roof
are operating.
■Security feature
If a door or the glass hatch is not opened within approximately 60 seconds after the vehi-
cle is unlocked, the security feature automatically locks the vehicle again.
■When the door cannot be locked by the lock sensor on the upper part of the door han-
dle
■Door lock buzzer
If an attempt to lock the doors is made when a door and/or the glass hatch is not fully
closed, a buzzer sounds continuously. Fully close the door and/or the glass hatch to stop
the buzzer, and lock the vehicle once more.
■Setting the alarm
Locking the doors will set the alarm system. ( P. 79)
■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. 547)
●Replace the battery with a new one if it is depleted. ( P. 492)
If the door will not lock even when the topside
sensor area is touched, try touching both the
topside and underside sensor areas at the same
time.
When gloves are being worn, remove the
gloves.

115
GX460_OM_OM60T19U_(U)3-2. Opening, closing and locking the doors
3
Operation of each component
Back door
◆Smart access system with push-button start
Carry the electronic key to enable this function.
Locks all the doors
Check that the door is securely
locked.
Unlocks all the doors
The doors cannot be unlocked for 3
seconds after the doors are locked.
◆Wireless remote control
P. 108
◆Door lock switch
P. 110
The back door can be locked/unlocke d and opened by the following proce-
dures.
Locking and unlocking the back door from the outside
1
2
Locking and unlocking the back door from the inside

118
GX460_OM_OM60T19U_(U)3-2. Opening, closing and locking the doors
WARNING
■Operating the back door
Observe the following precautions.
Failure to do so may cause parts of the body
to be caught, resulting in death or serious
injury.
●When opening or closing the back door, thoroughly check to make sure the sur-
rounding area is safe.
●If anyone is in the vicinity, make sure they are safe and let them know that the back
door is about to open or close.
●Use caution when opening or closing the ba ck door in windy weather as it may move
abruptly in strong wind.
●The back door may suddenly shut if the back
door stopper is not locked. It is more difficult
to open or close the back door on an incline
than on a level surface, so beware of the back
door unexpectedly opening or closing by
itself. Make sure that the back door stopper is
locked and secure before using the luggage
compartment.
●Even with the back door stopper locked, the
back door stopper may unlock and the back
door may close when excessive force such as
a strong wind is applied to the back door. Take
extra care to prevent any part of your body
from being caught.
●When closing the back door, take extra care
to prevent your fingers etc. from being
caught. Also pay attention to your personal
belongings such as bags and ties.
●When closing the back door, make sure to
press it lightly on its ou ter surface. If the back
door handle is used to fully close the back
door, it may result in hands or arms being
caught.

GX460_OM_OM60T19U_(U)
1233-2. Opening, closing and locking the doors
3
Operation of each component
WARNING
■Operating the glass hatch
Observe the following precautions.
Failure to do so may cause parts of the body to be caught, resulting in death or serious
injury.
●Remove any heavy loads, such as snow and ice, from the glass hatch before opening
it. Failure to do so may cause the glass hatc h suddenly shut again after it is opened.
●When opening or closing the glass hatch, thoroughly check to make sure the sur-
rounding area is safe.
●If anyone is in the vicinity, make sure they are safe and let them know that the glass
hatch is about to open or close.
●Use caution when opening or closing the gl ass hatch in windy weather as it may move
abruptly in strong wind.
●Do not pull on the glass hatch damper stay to close the glass hatch, and do not hang
on the glass hatch damper stay.
Doing so may cause hands to be caught or the glass hatch damper stay to break,
causing an accident.
●Do not attach any accessories other than genuine Lexus parts to the glass hatch.
Such additional weight on the glass hatch may cause the glass hatch to suddenly shut
again after it is opened.
●The glass hatch may clos e if it is not opened
fully. It is more difficult to open or close the
glass hatch on an incline than on a level sur-
face, so beware of the glass hatch unexpect-
edly opening or closin g by itself. Make sure
that the glass hatch is fully open and secure
before using the luggage compartment. Also
pay attention to your personal belongings
such as bags and ties.
●When closing the glass hatch, take extra care
to prevent your fingers etc. from being
caught. Also pay attention to your personal
belongings such as bags and ties.
●When closing the glass hatch, make sure to
press it lightly on its outer surface.

128
GX460_OM_OM60T19U_(U)3-2. Opening, closing and locking the doors
●When carrying the electronic key together with the following devices that emit radio
waves
• Portable radio, cellular phone, cordle
ss phone or other wireless communication
devices
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or person al digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or me tallic objects are attached to the rear win-
dow
●When the electronic key is placed near a battery charger or electronic devices
●When the vehicle is parked in a pay parking spot where radio waves are emitted
■Note for the entry function
●Even when the electronic key is within the effective range (detection areas), the system
may not operate properly in the following cases:
• The electronic key is too close to the window or outside door handle, near the ground, or in a high place when the doors are locked or unlocked.
• The electronic key is on the instrument pa nel, luggage cover 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 th e 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 an d the doors will become lockable from the
outside, possibly trapping the electronic key inside the vehicle.
●As long as the electronic key is within th e effective range, the doors may be locked or
unlocked by anyone. However, only the door s 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 lock or unlock if a large amount of water splashes on the door handle,
such as in the rain or in a car wash, when th e electronic key is within the effective range.
(The doors will automatically be locked afte r approximately 60 seconds if the doors or
the glass hatch are not opened and closed.)
●If the wireless remote control is used to lo ck the doors when the electronic key is near
the vehicle, there is a possibility that the d oor may not be unlocked by the entry func-
tion. (Use the wireless remote control to unlock the doors.)
●Touching the door lock sensor while we aring gloves may 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 el ectronic key is within the effective range,
the door may lock and unlock repeatedly. In this case, follow the following 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 electronic key to battery-saving mode to disable the smart access system with push-button start. ( P. 127)