Page 896 of 1014
8697-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
Inte-
rior
buzzerExterior
buzzerWarning messageDetailsCorrection
procedure
Once
The driver’s door
was opened and
closed with the
power switch
turned off and
then the power
switch was put in
ACCESSORY
mode twice with-
out the hybrid
system being
started.
Press the
power
switch
while
depressing
the brake
pedal.
During an hybrid
system starting
procedure in the
event that the
electronic key was
not functioning
properly (P.
911), the power
switch was
touched with the
electronic key.
Press the
power
switch
within 10
seconds of
the buzzer
sounding.
Once
The steering lock
could not be
released within 3
seconds of the
power switch
being pressed.
Press the
power
switch
while
depressing
the brake
pedal and
moving the
steering
wheel left
and right.
(Flashes)
(Flashes)
Page 937 of 1014
9107-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
If the electronic key does not operate properly
Doors
Use the mechanical key
(P. 139) in order to perform
the following operations:
Locks all the doors
Closes the windows and
moon roof (turn and hold)
*
Unlocks all the doors
Opens the windows and
moon roof (turn and hold)
*
*
: This setting must be customized
at any authorized Lexus dealer
or repairer, or another duly qual-
ified and equipped professional.
If communication between the electronic key and vehicle is inter-
rupted (P. 150) or the electronic key cannot be used because the
battery is depleted, the smart entry & start system and wireless
remote control cannot be used. In such cases, the doors and trunk
can be opened and the hybrid system can be started by following
the procedure below.
Locking and unlocking the doors, unlocking the trunk and key
linked functions
1
2
3
4
Page 939 of 1014

9127-2. Steps to take in an emergency
GS450h_300h_OM_OM30D53E_(EE)
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. 779)
Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered.
Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and modes will be changed each time the
switch is pressed.(P. 247)
When the electronic key does not work properly
Make sure that the smart entry & start system has not been deactivated in
the customization setting. If it is off, turn the function on.
(Customizable features: P. 942)
Check if battery-saving mode is set. If it is set, cancel the function. (P.
149)
3
Page 942 of 1014

915
7 7-2. Steps to take in an emergency
When trouble arises
GS450h_300h_OM_OM30D53E_(EE)
When recharging or replacing the 12-volt battery
For vehicles with an alarm: make sure that the key is not inside the vehicle
when recharging or replacing the 12-volt battery. The key may be locked in
the vehicle if the alarm is activated. (P. 99)
In some cases, it may not be possible to unlock the doors using the smart
entry & start system when the 12-volt battery is discharged. Use the wire-
less remote control or the mechanical key to lock or unlock the doors.
The hybrid system may not start on the first attempt after the 12-volt battery
has recharged but will start normally after the second attempt. This is not a
malfunction.
The power switch mode is memorized by the vehicle. When the 12-volt bat-
tery is reconnected, the system will return to the mode it was in before the
12-volt battery was discharged. Before disconnecting the 12-volt battery,
turn the power switch off.
If you are unsure what mode the power switch was in before the 12-volt
battery discharged, be especially careful when reconnecting the 12-volt bat-
tery.
CAUTION
Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the
flammable gas that may be emitted from the 12-volt battery:
Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended termi-
nal.
Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
Do not smoke, use matches, cigarette lighters or allow open flame near the
12-volt battery.
Page 975 of 1014
943
8 8-2. Customization
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)
Vehicles with a navigation system:
Refer to “Navigation System Owner’s Manual”.
Changing by using the “DISP” button
P. 1 1 8
Some function settings are changed simultaneously with other
functions being customized. Contact any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.
Settings that can be changed using the Remote Touch
Settings that can be changed using the “DISP” button
Settings that can be changed by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
Definition of symbols: O = Available, — = Not available
Customizable features
1
2
3
ItemFunctionDefault
settingCustom-
ized set-
ting
Alarm*1
(P. 9 7 )
Deactivates the alarm
when the doors are
unlocked using the
mechanical key (vehi-
cles with an entry func-
tion)
OffOn——O
123
Page 977 of 1014
945
8 8-2. Customization
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)
Multi-
informa-
tion
display
(P. 1 1 4 )EV driving IndicatorOnOff—O—
Default settingsOffOn—O—
Door lock
(P. 183,
910)
Unlocking on second
key turn
(Allows all doors to be
unlocked by turning the
mechanical key twice in
the driver’s door)Off
(All doors
unlocked
in one
step)
On
(Driver’s
door
unlocked
in one
step, all
doors
unlocked
in two
steps)
O—O
Shift position linked
door unlocking functionOffOnO—O
Driver’s door linked
door unlocking functionOnOffO—O
Locking/unlocking of
the trunk when all doors
are locked/unlocked
OnOff——O
Entry
function
*1
(P. 143)
and
wireless
remote
control
(P. 168)
Operation signal
(Emergency flashers)OnOffO—O
Time elapsed before
automatic door lock
function is activated if a
door is not opened after
being unlocked
30
seconds
60
seconds
——O
120
seconds
Open door reminder
buzzer (When locking
the vehicle)
OnOff——O
ItemFunctionDefault
settingCustom-
ized set-
ting
123
Page 978 of 1014
9468-2. Customization
GS450h_300h_OM_OM30D53E_(EE)
Entry
function
*1
(P. 143)
Smart entry & start sys-
temOnOffO—O
Unlocking operationAll the
doorsDriver’s
doorO—O
Wireless
remote
control
(P. 168)
Wireless remote controlOnOff——O
Unlocking operation
Off
(All doors
unlocked
in one
step)
On
(Driver’s
door
unlocked
in one
step, all
doors
unlocked
in two
steps)
O—O
Trunk unlocking opera-
tionPress and
hold
(short)
One short
press
——O
Push
twice
Press and
hold
(long)
Off
ItemFunctionDefault
settingCustom-
ized set-
ting
123
Page 979 of 1014
947
8 8-2. Customization
Vehicle specifications
GS450h_300h_OM_OM30D53E_(EE)
Front seats
(P. 194)
Driver’s seat movement
when exiting the vehicleStandard
Off
O—O
Partial
Selecting the door link-
ing driving position
memory with door
unlock operation
Driver’s
doorAll doors——O
Outside
rear view
mirrors
(P. 2 1 1 )Automatic mirror fold-
ing and extending opera-
tion
*1
Linked to
the
locking/
unlocking
of the
doorsOff
——O
Linked to
operation
of the
power
switch
Power
windows
(P. 215)
and moon
roof
*1
(P. 218)
Mechanical key linked
operationOffOn——O
Wireless remote control
linked operationOffOn——O
Buzzer sounds if oper-
ated using wireless
remote control
OnOff——O
ItemFunctionDefault
settingCustom-
ized set-
ting
123