2010 Lexus GS450h alarm

TABLE OF CONTENTSIndex
2
GS_HV_U (OM30C81U)
February 1, 2010 10:54 am
For your information ....................... 18
Symbols used throughout this 
manual ............................................... 21
1-1. Hybrid system
Hybrid system ................................... 24
1-2. Key information
Keys ...................................................... 36
1-3. Opening, closing and locking 
the doors and trunk
Smart access system with 
push-button start ........................... 41
Wireless remote control .............. 53
Doors.................................................... 55
Trunk..................................................... 60
1-4. Adjustable components 
(seats, mirrors, steering wheel)
Front seats .......................................... 65
Driving position memory 
system ............................................... 67
Head restraints................................. 72
Seat belts ............................................ 75
Steering wheel.................................. 82
Inside rear view mirror ................. 83
Outside rear view mirrors .......... 851-5. Opening and closing the windows
and moon roof
Power windows................................ 87
Moon roof .......................................... 90
1-6. Refueling
Opening the fuel tank cap........... 94
1-7. Theft deterrent system
Immobilizer system ........................ 99
Alarm................................................... 101
Theft prevention labels 
(U.S.A.) ........................................... 104
1-8. Safety information
Correct driving posture ............. 105
SRS airbags ..................................... 107
Front passenger occupant 
classification system .................... 119
Child restraint systems ............... 124
Installing child restraints ............. 128
1Before driving

Before driving1
23
GS_HV_U (OM30C81U)
January 28, 2010 11:26 am
1-1. Hybrid system
Hybrid system ............................ 24
1-2. Key information
Keys ............................................... 36
1-3. Opening, closing and locking 
the doors and trunk
Smart access system with 
push-button start ..................... 41
Wireless remote control ......... 53
Doors ............................................ 55
Trunk ............................................. 60
1-4. Adjustable components 
(seats, mirrors, steering 
wheel)
Front seats ................................... 65
Driving position memory 
system ........................................ 67
Head restraints .......................... 72
Seat belts ..................................... 75
Steering wheel .......................... 82
Inside rear view mirror ........... 83
Outside rear view mirrors ..... 851-5. Opening and closing the 
windows and moon roof
Power windows .......................... 87
Moon roof ................................... 90
1-6. Refueling
Opening the fuel tank cap ..... 94
1-7. Theft deterrent system
Immobilizer system .................. 99
Alarm........................................... 101
Theft prevention labels 
(U.S.A.).................................... 104
1-8. Safety information
Correct driving posture ....... 105
SRS airbags .............................. 107
Front passenger occupant 
classification system............. 119
Child restraint systems ......... 124
Installing child restraints....... 128

47
1-3. Opening, closing and locking the doors and trunk
1
Before driving
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
Unlock the doors using the wireless remote control and open one of the
doors.
If a door is not opened within 60 seconds after is pressed, the doors
will be locked again and the alarm will automatically be set.
In case that the alarm is triggered, immediately stop the alarm. (P. 1 0 1 )
■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 a month 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. 53) or the mechanical key (P. 575)
■Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The card key battery life is about a year
and a half.)
●If the battery becomes low, an alarm will sound in the cabin when the hybrid sys-
tem stops. (P. 4 9 )
●The battery becomes depleted even if the electronic key is not used because
the key always transmits radio waves. If the smart access system with push-but-
ton start or the wireless remote control does not operate, or the detection area
becomes smaller, the battery may be depleted. Replace the battery when nec-
essary. ( P. 4 9 4 )
●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
•Glass top ranges
• Table lamps
STEP3

48
1-3. Opening, closing and locking the doors and trunk
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
■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 correctly and the system may not operate properly. (The alarm may
go off accidentally, or the door lock prevention may not function.)
■Note for the smart access system with push-button start
●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 unlocked.
• The electronic key is on the instrument panel, rear package tray or floor, or in
the glove box when the hybrid system is started or “POWER” switch modes
are changed.
●As long as the electronic key is within the effective range, the doors may be
locked or unlocked by anyone.
●Even if the electronic key is not inside the vehicle, it may be possible to start the
hybrid system if the electronic key is near the window.
●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 when the 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.)

49
1-3. Opening, closing and locking the doors and trunk
1
Before driving
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
●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
smart access system with push-button start. (Use the wireless remote control to
unlock the doors.)
●A sudden approach to the effective range or door handle operation may pre-
vent 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.
■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 60 seconds after the vehicle is
unlocked, the theft deterrent system automatically locks the vehicle again.
■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. 5 5 6 )
The following table describes circumstances and correction procedures when only
alarms are sounded.

50
1-3. Opening, closing and locking the doors and trunk
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
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.
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 60
secondsTried to exit the vehicle with
the electronic key and lock
the doors without first turning
the “POWER” switch OFFTurn the “POWER”
switch OFF and lock the
doors again.
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”.
Interior alarm rings
continuously
Switched to ACCESSORY
mode while the driver’s door
is open (Opened the driver’s
door when the “POWER”
switch is in ACCESSORY
mode.)
Turn the “POWER”
switch OFF and close
the driver’s door.
Turned the “POWER” switch
OFF while the driver’s door is
open
Close the driver’s door.

53
1
1-3. Opening, closing and locking the doors and trunk
Before driving
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
Wireless remote control
■Operation signals
●Doors: A buzzer sounds and the emergency flashers flash to indicate that the
doors have been locked/unlocked. (Locked: Once; Unlocked: Twice)
●Trunk: A buzzer sounds to indicate that the trunk has been unlocked.
●Windows and moon roof: A buzzer sounds to indicate that the windows and
moon roof are opening.
■Door lock buzzer
If a door is not fully closed, a buzzer sounds continuously for 10 seconds if an
attempt to lock the door is made. Fully close the door to stop the buzzer, and lock
the vehicle once more.
The wireless remote control can be used to lock and unlock the vehicle and
the trunk from outside the vehicle.
Locks all doors
Unlocks all doors
Pushing the button unlocks the
driver’s door. Pushing the button
again within 3 seconds unlocks
the other doors.
Opens the windows and
moon roof (push and hold)
*
Unlocks the trunk 
(push and hold)
Sounds alarm 
(push and hold) (P. 103)
*: This setting must be customized
at your Lexus dealer.

69
1-4. Adjustable components (seats, mirrors, steering wheel)
1
Before driving
GS_HV_U (OM30C81U)
February 1, 2010 11:00 am
Open one of the doors.
If a door is not opened within 60 seconds after is pushed,
the doors will be locked again and the alarm will automatically be set.
In case that the alarm is triggered, immediately stop the alarm.
(
P. 1 0 1 )
Using the door lock switch
Carry only the key (including the card key) to which you want to link
the driving position. If 2 or more keys are in the vehicle, the driving
position cannot be linked properly.
Turn the “POWER” switch to OFF mode and close the driver’s
door.
While pushing the desired button
(“1”, “2” or “3”), push the lock or
unlock side on the door lock
switch (either the driver or passen-
ger side) until the signal beeps.
The driving position is recalled
when the driver’s door is unlocked
using the entry function or wireless
remote control and the driver’s
door is opened.
STEP3
STEP1
STEP2