Lexus GS450h 2007 Do-it-yourself maintenance / LEXUS 2007 GS450H THROUGH JUNE 2006 PROD. (OM30727U) Owner's Guide

11
1-1. Hybrid system
1
Before driving
NOTICE
■Hybrid battery air vent
●Do not put foreign objects over the air vent. The hybrid battery (traction battery)
may overheat and be damaged.
●Clean the air vent regularly to prevent the hybrid battery (traction battery) from
overheating.
●Do not wet the air vent. It may cause a short circuit and damage the hybrid bat-
tery (traction battery).
●Do not load a large amount of water such as an aquarium into the vehicle. If water
spills over the hybrid battery (tractio n battery), the battery may be damaged.

12
1-2. Key information
Keys
Using the mechanical key
Take out the mechanical key.
You can use the mechanical key to
lock/unlock the doors, and to
unlock the trunk.
The following keys are provided with the vehicle.
Electronic keys
• Operating the smart access system with push-button start
( P. 1 4 )
• Operating the wireless re
mote control function 
( P. 2 3 )
Mechanical keys
Key number plate
■When required to leave a key to the vehicle with a parking attendant
Turn the trunk opener main switch OFF an d lock the glo
ve box as circumstances
demand. ( P.
3 1 , 3 1 2 )
Remove the mechanical key for your own use
and provide the attendant with the
electronic key only.
■Key number plate
Keep the plate in a safe place such as your wallet, not in the vehicle. In the event that
a
mechanical key is lost, a new key can be made at your Lexus dealer using the key
number plate. ( P. 4 6 8 )

13
1-2. Key information
1
Before driving
NOTICE
■To prevent key damage
●Do not bend the keys, expose them to high temperatures by placing them in
direct sunlight, or get them wet.
●Do not expose the keys to electromagneti c materials or attach any material that
blocks electromagnetic waves to the key surface.

14
1-3. Opening, closing and locking the doors and trunk
Smart access system with push-button start
The following operations can be performed simply by carrying the elec-
tronic key, for example in your pocket.
Locks and unlocks the doors ( P. 1 5 )
Unlocks the trunk ( P. 1 5)
Starts and stops the hybrid system ( P. 1 0 1 )

15
1-3. Opening, closing and locking the doors and trunk
1
Before driving
Locking and unlocking the doors
Press the lock button to lock the
door.
Grip the handle to unlock the
door
.
Make sure to touch the sensor on
the back of the handle.
The door cannot be unlocked for 3
seconds af
ter the door is locked.
Unlocking the trunk
Press the button to unlock the
trunk.

16
1-3. Opening, closing and locking the doors and trunk
Antenna location
Antennas outside cabin
Antennas inside cabin
Antenna outside trunk
Antenna inside trunk
■Operation signals
A buzzer sounds and the emergency flashers flash to indicate that the doors have
been
locked/unlocked. (Locked: Once; Unlocked: Twice)
■Conditions affecting operation
The smart access system with push-button s
tart and wireless remote control func-
tion may not operate normally in the following situations.
●Near a TV tower, radio station, electric power plant, airport or other facility that
generates strong radio waves
●When carrying a portable radio, cellular phone or other wireless communica -
tion device
●When multiple electronic keys are in the vicinity
●When the electronic key has come into contact with, or is covered by a metallic
object
●When a wireless key (that emits radio waves) is being used nearby
●When the electronic key has been left ne ar an electrical appliance such as a
personal computer
In these situations, remove all possible caus e
of malfunction, or follow the steps out-
lined in “When the electronic key battery is discharged”. ( P. 4 6 9 )

17
1-3. Opening, closing and locking the doors and trunk
1
Before driving
■Switching the door unlock function
It is possible to set which doors the entry function unlocks. Turn the power switch “OFF”.
When the indicator on the key surface is turned off, push and
hold , , or for approximately 5 seconds while pushing the
button on the key.
The setting changes each time an operation is performed, as shown below. (Wait for
at least 5 seconds after each oper ation to continue an operation.)
STEP1
STEP2
Multi-information
displayUnlocking doorsBeep
Hold the driver’s door handle
to unlock only the driver’s
door
Exterior: Beeps 3 times
Interior: Rings once
Hold a passenger’s door han-
dle to unlock all the doors
Hold the door handle to
unlock the front and rear
doors on your sideExterior: Beeps 4 times
Interior: Rings once
Hold the door handle to
unlock the doorExterior: Beeps once
Interior: Rings once
Hold a door handle to unlock
all doorsExterior: Beeps twice
Interior: Rings once

18
1-3. Opening, closing and locking the doors and trunk
■Battery-saving function
In the following circumstances, the entry function is disabled in order to prevent the
vehicle and electronic key batteries from discharging.
●When the entry function has not been used for 2 weeks or more
●When the electronic key has been left within approximately 3 ft. (1 m) of the
vehicle for 10 minutes or more
The system will resume operation when...
●The vehicle is locked using the door handle lock switch
●The vehicle is locked/unlocked using the wireless remote control function 
(  P. 23) or the mechanical key ( P. 4 6 9 )
■Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The battery becomes depleted even if
the electronic key is not used.) If the smart access system with push-button start
or the wireless remote control function does not operate, or the detection area
becomes smaller, the battery may be depleted. Replace the battery when nec-
essary. (  P. 3 9 3 )
●To avoid serious deterioration, do not leave the electronic key within 3 ft. (1 m) of
the following electrical appliances.
•TVs
• Personal computers
• Recharging cellular phones or cordless phones
• Table lamps
■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 outside
of the vehicle.
Depending on the position and holding condition of the electronic key, the key may
not be detected corr ectly and the system may not operate properly. (The alarm may
go off accidentally, or the door lock prevention may not function.)

19
1-3. Opening, closing and locking the doors and trunk
1
Before driving
■Note for the smart access system with push-button start
●The doors may unlock if a large amount of water splashes on the door handle,
such as in the rain or in a car wash. (The doors will automatically be locked after
approximately 30 seconds if the do ors are not opened and closed.)
●Gripping the door handle when wearing a glove may not unlock the door.
●If the wireless remote control is used to lock the doors when the electronic key
is near the vehicle, there is a possibility that the door may not be unlocked by the
entry function. (Use the wireless remote control to unlock the doors.)
■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.
■Security feature
If a door is not opened within approximately 30 seconds after the vehicle is
unlocked, the anti-theft system automatically locks the vehicle again.

20
1-3. Opening, closing and locking the doors and trunk
■Alarms and warning indicators
A combination of exterior and interior alarms as well as warnings displayed on the
multi-information display are used to prevent theft of the vehicle and unforeseeable
accidents resulting from erroneous operation. Take appropriate measures in
response to any warning indications on the multi-information display. (P. 443)
The following table describes circumstances and correction procedures when only
alarms are sounded.
AlarmSituationCorrection procedure
Exterior alarm
sounds once for 2
seconds
Tried to lock the doors using
the entry function while the
electronic key is still inside
the passenger compartmentRetrieve the electronic
key from the passenger
compartment and lock
the doors again.
Tried to exit the vehicle with
the electronic key and lock
the doors without first turning
the power switch “OFF”Tu r n t h e p o w e r s w i t c h
“OFF” and lock the
doors again.
Closed the trunk while the
electronic key is still inside
and all doors are lockedRetrieve the electronic
key from the trunk and
close the trunk lid.
Exterior alarm
sounds once for 10
secondsTried to lock the vehicle using
the entry function while a
door is openClose all of the doors
and lock the doors
again.
Interior alarm
sounds continu-
ouslyTried to open the door and
exit the vehicle without shift-
ing the shift lever to “P”Shift the shift lever to
“P”.