change key battery Lexus GS450h 2016 Owner's Manual / LEXUS 2016 GS450H OWNERS MANUAL (OM30E99U)

GS450h_OM_OM30E99U_(U)
1293-2. Opening, closing and locking the doors and trunk
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Operation of each component
■Internal trunk release lever
■If the smart access system with push-butto n start or the wireless remote control does
not operate properly
●Use the mechanical key to open the trunk. ( P. 4 5 1 )
●Replace the key battery with a new one if it is depleted. ( P. 377)
■When leaving a key to the vehi cle with a parking attendant
 P. 117
■Customization
The trunk unlocking operation can be changed. (Customizable features: P. 4 9 1 )
The trunk lid can be open
ed 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.
WA R N I N G
Observe the following precautions.
Failure to do so may result in death or serious injury.
■Before driving
●Make sure that the trun k lid is fully closed. If the trunk lid is not fully closed, it may
open unexpectedly while driving and hit ne ar-by objects or luggage in the trunk may
be thrown out, causing an accident.
●Do not allow children to play in the trunk.
If a child is accidentally locked in the trunk, they could suffer from heat exhaustion,
suffocation or other injuries.
●Do not allow a child to open or close the trunk lid.
Doing so may cause the trunk lid to open unexpectedly, or cause the child’s hands,
head, or neck to be caught by the closing trunk lid.
■Important points while driving
Never let anyone sit in the trunk. In the even t of sudden braking or a collision, they are
susceptible to death or serious injury.

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GS450h_OM_OM30E99U_(U)
3-2. Opening, closing and locking the doors and trunk
■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 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 pa nel, rear package tray or floor, or in the
door pockets or glove box when the hybrid system is started or power 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 outs ide the cabin and the door will become lockable from the
outside, possibly trapping the el ectronic key inside the vehicle.
●As long as the electronic key is within the 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 ve hicle, it may be possible to start the hybrid
system if the electronic key is near the window.
●The doors may unlock or lock if a large amou nt 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 after approximately 60 seconds if the doors
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 door may not be unlocked by the entry func-
tion. (Use the wireless remote control to unlock the doors.)
●Touching the door lock sensor while wearin g gloves may delay or prevent lock opera-
tion.
●If the door handle becomes wet while the el ectronic key is within the effective range,
the door may lock and unlock repeatedly. In that 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 the electronic key to battery-saving mode to disable the smart access system with push-button start. ( P. 1 3 5 )
●If the electronic key is insi de the vehicle and a door handle becomes wet during a car
wash, a message may be shown on the mult i-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, or use the lock sensor on the
lower part of the door handle.
●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.
●Gripping the door handle when wearing a glove may not unlock the door.
●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.

GS450h_OM_OM30E99U_(U)
1593-5. Opening, closing the windows and moon roof
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Operation of each component
■When the window cannot be opened or closed
When the jam protection function or catch protection function operates unusually and
the door window cannot be open ed or closed, perform the following operations with the
power window switch of that door.
●Stop the vehicle. With the power switch in ON mode, within 4 seconds of the jam pro-
tection function or catch protection func tion activating, continuously operate the
power window switch in the one-touch closing direction or one-touch opening direc-
tion so that the door window can be opened and closed.
●If the door window cannot be opened and closed even when performing the above
operations, perform the following proc edure for function initialization.
Turn the power switch to ON mode.
Pull and hold the power window switch in the one-touch closing direction and com-
pletely close the door window.
Release the power window switch for a mo ment, resume pulling the switch in the
one-touch closing direction, and hold it there for approximately 6 seconds or more.
Press and hold the power window switch in the one-touch opening direction. After
the door window is complete ly opened, continue holding the switch for an additional
1 second or more.
Release the power window switch for a moment, resume pressing the switch in the
one-touch opening direction, and hold it there for approximately 4 seconds or
more.
Pull and hold the power window switch in the one-touch closing direction again.
After the door window is completely clos ed, continue holding the switch for a fur-
ther 1 second or more.
If you release the switch while the window is moving, start again from the beginning.
If the window reverse and cannot be fully closed or opened, have the vehicle inspected
by your Lexus dealer.
■Door lock linked window operation
●The power windows can be opened an d closed using the mechanical key.*( P. 4 5 1 )
●The power windows can be opened us ing the wireless remote control.* ( P. 1 2 0 )
*: These settings must be customized at your Lexus dealer.
■When the 12-volt battery is disconnected
The window lock switch is disabled. If nece ssary, press the window lock switch after
reconnecting the 12-volt battery.
■Power windows open warning buzzer
The buzzer sounds and a message is shown on the multi-information display in the instru-
ment cluster when the power switch is turned off and the driver’s door is opened with the
power windows open.
■Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features: P. 4 9 1 )
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GS450h_OM_OM30E99U_(U)
1834-2. Driving procedures
4
Driving
■When the steering lock cannot be released
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended if the
hybrid system is turned on and off repeatedly in a short period of time. In this case, refrain
from operating the hybrid system. After about 10 seconds, the steering lock motor will
resume functioning.
■When “Check Access System with Elec. Ke y” will be displayed on the multi-informa-
tion display
The system may be malfunctioning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the “READY” indicator does not come on
In the event that the “READY” indicator does not come on even after performing the
proper procedures for starting the vehicle, contact your Lexus dealer immediately.
■If the hybrid system is malfunctioning
 P. 4 0 6
■If the electronic key battery is depleted
P. 3 7 7
■Operation of the power switch
●When operating the power switch, one short, firm press is enough. If the switch is
pressed improperly, the hybrid system may no t start or the power switch mode may not
change. It is not necessary to press and hold the switch.
●If attempting to restart the hybrid system immediately after turning the power switch off,
the hybrid system may not start in some cases. After turning the power switch off,
please wait a few seconds before restarting the hybrid system.
■If the smart access system with push-butto n start has been deactivated in a customized
setting
 P. 4 5 1
“Steering Lock active” will be displayed on the
multi-information display.
Check that the shift lever is set in P. Press the
power switch while turn
ing the steering wheel
left and right.

GS450h_OM_OM30E99U_(U)
1994-3. Operating the lights and wipers
4
Driving
■Automatic light off system
●When the headlights are on: The headlights and tail lights turn off 30 seconds after the
power switch is turned off and a door is opened and all of the doors and trunk are
closed. (The lights turn off immediately if on the key is pressed twice after all the
doors are closed.)
●When only the tail lights are on: The tail ligh ts turn off automatically if the power switch
is turned off and the driver’s door is opened.
To turn the lights on again, turn the power switch to ON mode, or turn the light switch off
once and then back to or .
If any of the doors or trunk lid is kept open , the lights automatically turn off after 20 min-
utes.
■Light reminder buzzer
A buzzer sounds when the power switch is turned off or turned to ACCESSORY mode
and the driver’s door is opened while the lights are turned on.
■Automatic headlight leveling system
The level of the headlights is automatically ad justed according to the number of passen-
gers and the loading condition of the vehicle to ensure that the headlights do not inter-
fere with other road users.
■If the “AFS OFF” indicator flashes
It may indicate a malfunction in the system. Contact your Lexus dealer.
■Customization
Settings (e.g. light sensor se nsitivity) can be changed.
(Customizable features: P. 4 9 1 )
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.

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GS450h_OM_OM30E99U_(U)
5-3. Using the interior lights
●Illuminated entry system: The lights automatically turn on /off according to power switch
mode, the presence of the electronic key, whether the doors are locked/unlocked, and
whether the doors are opened/closed.
●If the interior lights remain on when the power switch is turned off, the lights will go off
automatically after 20 minutes.
●Setting (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features: P. 4 9 1 )
NOTICE
To prevent 12-volt battery discharge, do not leave the lights on longer than necessary
when the hybrid system is off.

4527-2. Steps to take in an emergency
GS450h_OM_OM30E99U_(U)
Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the power switch.
When the electronic key is detected, a
buzzer sounds and the power switch will
turn to ON mode.
When the smart access system with
push-button start is deactivated in cus-
tomization setting, the power switch will
turn to ACCESSORY mode.
Firmly depress the brake pedal and check that is shown on the multi-
information display.
Press the power switch.
In the event that the hybrid system still cannot be started, contact your Lexus
dealer.
■Stopping the hybrid system
Shift the shift lever to P and press the power switch as you normally do when stopping the
hybrid system.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the electronic
key battery be replaced immediately when the battery is depleted. ( P. 377)
■Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and mode s will be changed each time the switch is
pressed.( P. 181)
■When the electronic key does not work properly
●Make sure that the smart access system wi th push-button start has not been deacti-
vated in the custom ization setting. If it is off, turn the function on.
(Customizable features: P. 4 9 1 )
●Check if battery-saving mo de is set. If it is set, cancel the function. ( P. 1 3 4 )
Starting the hybrid system
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WA R N I N G
■When using the mechanical key and operating the power windows or moon roof
Operate the power window or moon roof afte r checking to make sure that there is no
possibility of any passenger having any of their body parts caught in the window or
moon roof.
Also, do not allow children to operate the mech anical key. It is possible for children and
other passengers to get caught in the power window or moon roof.
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