change key battery Lexus GS450h 2015 Opening, closing and locking the doors and trunk / LEXUS 2015 GS450H OWNERS MANUAL (OM30E26U)

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GS450h_OM_OM30E26U_(U)
3-2. Opening, closing and locking the doors and trunk
■Electronic key battery depletion
●The standard battery life is 1 to 2 years.
●If the battery becomes low, an alarm will sound in the cabin when the hybrid system
stops. ( P. 5 3 9 )
●As the electronic key 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 neces-
sary. ( P. 4 6 0 )
• The smart access system with push-button 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 key within 3 ft. (1 m) of
the following electrical 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
■When the electronic key battery is fully depleted
 P. 4 6 0
■Customization
Settings (e. g. smart access system with push-button start) can be changed.
(Customizable features: P. 5 9 9 )
■If the smart access system with push-but ton start has been deactivated in a cus-
tomized setting
●Locking and unlocking the doors and opening the trunk:
Use the wireless remote control or mechanical key. ( P. 136, 559)
●Starting the hybrid system and changing power switch modes:  P. 5 6 0
●Stopping the hybrid system: P. 1 9 4

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GS450h_OM_OM30E26U_(U)
3-2. Opening, closing and locking the doors and trunk
■If the wireless remote control does not operate properly
Locking and unlocking the doors and open ing the trunk: Use the mechanical key.
(  P. 5 5 9 )
■Electronic key battery depletion
P. 1 3 4
■When the electronic key battery is fully depleted
P. 4 6 0
■Confirmation of the registered key number
The number of keys already registered to the vehicle can be confirmed. Ask your
Lexus dealer for details.
■Customization
Settings (e.g. wireless remote control system) can be changed.
(Customizable features: P. 5 9 9 )
■Certification for wireless remote control
For vehicles sold in the U.S.A.
FCC ID: HYQ23AAB FCC ID: HYQ14FBA
FCC ID: NI4TMLF10-3 FCC ID: NI4TMLF10-50
FCC ID: NI4TMLF10-51
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesire d operation.
FCC WARNING:
Changes or modifications not expressly ap proved by the party responsible for com-
pliance could void the user’s authority to operate the equipment.
For vehicles sold in Canada
NOTE:
This device complies with Industry Cana da licence-exempt RSS standard(s). Oper-
ation is subject to the following two conditio ns: (1) this device may not cause interfer-
ence, and (2) this device must accept any interference, including interference that
may cause undesired operation of the device.

GS450h_OM_OM30E26U_(U)
1693-5. Opening, closing the windows and moon roof
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Operation of each component
■Door lock linked window operation
●The power windows can be opened and closed using the mechanical key.*
( P. 559)
●The power windows can be opened using the wireless remote control.* ( P. 1 3 6 )
*: These settings must be cust omized 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
instrument 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. 5 9 9 )

GS450h_OM_OM30E26U_(U)
1974-2. Driving procedures
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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 sy stem. After about 10 seconds, the steering
lock motor will resume functioning.
■When “Check Access System with Elec. Key” will be displayed on the multi-infor-
mation display
The system may be malfunctio ning. Have the vehicle inspected by your Lexus dealer
immediately.
■If the “READY” indicator does not come on
If the “READY” indicator does not come on when you press the power switch with
the shift lever in P and the brake pedal depressed, contact your Lexus dealer imme-
diately.
■If the hybrid system is malfunctioning
 P. 5 1 4
■If the electronic key battery is depleted
P. 4 6 0
■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 not 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 sy stem immediately after turning the power
switch off, the hybrid system may not star t 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-but ton start has been deactivated in a cus-
tomized setting
 P. 559
“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 turning the steering wheel
left and right.

GS450h_OM_OM30E26U_(U)
3655-3. Using the interior lights
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Interior features
■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.
■To prevent 12-volt battery discharge
If the interior lights remain on when the power switch is turned off, the lights will go
off automatically after 20 minutes.
■Customization
Setting (e.g. the time elapsed before lights turn off) can be changed.
(Customizable features: P. 5 9 9 )
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.

5617-2. Steps to take in an emergency
GS450h_OM_OM30E26U_(U)
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When trouble arises
■Stopping the hybrid system
Shift the shift lever to P and press the power switch as you normally do when stop-
ping the hybrid system.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the elec-
tronic key battery be replaced immedi ately when the battery is depleted. (P. 4 6 0 )
■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. 1 9 4 )
■When the electronic key does not work properly
●Make sure that the smart access system with push-button start has not been deac-
tivated in the customization setting. If it is off, turn the function on.
(Customizable features:  P. 599)
●Check if battery-saving mode is set. If it is set, cancel the function. ( P. 1 2 9 )
CAUTION
■When using the mechanical key and operating the power windows and moon
roof
Operate the power window or moon roof af ter 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 mechanical key. It is possible for children
and other passengers to get caught in power window and moon roof.
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