2010 Lexus GS450h immobilizer

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

45
1-3. Opening, closing and locking the doors and trunk
1
Before driving
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
■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 start uses weak radio waves. In the fol-
lowing situations, the communication between the electronic key and the vehicle
may be affected, preventing the smart access system with push-button start. Wire-
less remote control, and immobilizer system from operating properly:
(Way of coping: P. 575)
●When the electronic key battery is depleted
●Near a TV tower, electric power plant, gas station, radio station, large display,
airport or other facility that generates strong radio waves or electrical noise
●When carrying a portable radio, cellular phone, cordless phone or other wire-
less communication devices
●When the electronic key is in contact with, or is covered by the following metal-
lic objects
• Cards to which aluminum foil is attached
• Cigarette boxes that have aluminum foil inside
• Metallic wallets or bags
•Coins
• Hand warmers made of metal
• Media such as CDs and DVDs
●When multiple electronic keys are in the vicinity
●When other wireless keys (that emit radio waves) are being used nearby
●When carrying or using the electronic key together with the following devices
that emit radio waves
• Another vehicle’s electronic key or a wireless key that emits radio waves
• Personal computers or personal digital assistants (PDAs)
• Digital audio players
• Portable game systems
●If window tint with a metallic content or metallic objects are attached to the rear
window

99
1
Before driving
GS_HV_U (OM30C81U)
January 28, 2010 10:09 am
1-7. Theft deterrent system
Immobilizer system
■System maintenance
The vehicle has a maintenance-free type immobilizer system.
■Conditions that may cause the system to malfunction
●If the grip portion of the key is in contact with a metallic object.
●If the key is in close proximity to or touching a key to the security system (key
with a built-in transponder chip) of another vehicle.
The vehicle’s keys have built-in transponder chips that prevent the hybrid
system from starting if the key has not been previously registered in the
vehicle’s on-board computer.
Never leave the keys inside the vehicle when you leave the vehicle.
The indicator light flashes after
the “POWER” switch has been
turned OFF to indicate that the
system is operating.
The indicator light stops flashing
after the “POWER” switch has
been turned to ACCESSORY
or ON mode to indicate that the
system has been canceled.

100
1-7. Theft deterrent system
GS_HV_U (OM30C81U)
January 28, 2010 10:09 am
■Certifications for the immobilizer system
For vehicles sold in the U.S.A.
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 undesired operation.
For vehicles sold in Canada
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.
CAUTION
■Certifications for the immobilizer system
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If modified or removed, the proper operation
of the system cannot be guaranteed.
FCC ID: NI4TMIMB-1

152
2-1. Driving procedures
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
■If the hybrid system does not start
The immobilizer system may not have been deactivated. (P. 9 9 )
■When the steering lock cannot be released
■When the “POWER” switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Lexus
dealer immediately.
■If the “READY” light does not come on
If the “READY” light does not come on when you press the “POWER” switch with
the shift lever in “P” and the brake pedal pressed, contact your Lexus dealer imme-
diately.
■Auto power OFF function
If the vehicle is left in ACCESSORY or ON mode (the hybrid system is not operat-
ing) for more than an hour with the shift lever in P, the “POWER” switch will auto-
matically turn off. However, this function cannot entirely prevent 12 volt battery
discharge. Do not leave the vehicle with the “POWER” switch in ACCESSORY or
ON mode for long periods of time when the hybrid system is not operating.
■When the ambient temperature is low
Such as during winter driving conditions, it may take time until the “READY” light
comes on.
■Sounds and vibrations specific to a hybrid vehicle
P. 2 7
■When the hybrid system is malfunctioning
P. 5 4 3
The green indicator light on the “POWER”
switch will flash and a message will be shown
on the multi-information display. Press the
“POWER” switch again while turning the
steering wheel left and right.

572
5-2. Steps to take in an emergency
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
If the hybrid system will not start
If the hybrid system will not start even though correct starting procedures
are being followed (
P. 150), consider each of the following points.
■The hybrid system will not start even if you are carrying the cor-
rect electronic key
One of the following may be the cause of the problem.
●The electronic key battery may be discharged. (P. 575)
●There may not be sufficient fuel in the vehicle’s tank.
Add fuel to the vehicle.
●There may be a malfunction in the steering lock system.
●There may be a malfunction in the immobilizer system. (P. 99)
■The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume
One of the following may be the cause of the problem.
●The 12 volt battery may be discharged. (P. 5 7 8 )
●The 12 volt battery terminal connections may be loose or cor-
roded.
■The interior lights and headlights do not turn on, or the horn does
not sound
One of the following may be the cause of the problem.
●One or both of the 12 volt battery terminals may be discon-
nected.
●The 12 volt battery may be discharged. (P. 5 7 8 )
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

634
Alphabetical index
GS_HV_U (OM30C81U)
February 1, 2010 11:29 am
Horn ............................................................ 160
Hybrid system ........................................... 24
Emergency shut off system ............. 29
Energy monitor/consumption 
screen ..................................................... 29
High voltage components ............... 28
Power meter ........................................... 161
Power (ignition) switch.................... 150
Identification
Engine .................................................... 590
Electric motor..................................... 590
Vehicle ................................................... 589
Ignition switch
Power switch ........................................ 150
Illuminated entry system ....................395
I/M test ......................................................453
Immobilizer system ................................. 99
Indicator lights......................................... 165
Initialization
Items to initialize ................................... 621
Inside rear view mirror ..........................83
Instrument panel light control........... 162
Interior lights
Interior lights......................................... 396
Wattage.................................................. 597
Intuitive parking assist .......................... 197
Jack
Positioning a floor jack....................458
Vehicle-equipped jack .................. 560
Jack handle ............................................. 560Keyless entry ............................................. 53
Keys
If the electronic key does 
not operate properly ................... 575
If you lose your keys .........................574
Key number plate..................................36
Keys..............................................................36
Mechanical key ......................................36
Power (ignition) switch ....................150
Wireless remote control key...........53
Lexus Link System................................ 433
Light bulbs
Replacing ................................................ 514
Wattage ................................................. 597
Light sensitive optitron meter............163
Lights
Fog light switch .................................... 174
Headlights switch.................................. 171
Interior lights list ................................. 395
Replacing light bulbs ......................... 514
Turn signal lever...................................158
Vanity lights.......................................... 407
Wattage ................................................. 597
Maintenance
Do-it-yourself maintenance......... 454
General maintenance..................... 450
Maintenance data .............................588
Maintenance requirements.......... 448
Meter
Instrument panel light control ....... 162
Meters......................................................... 161
Micro dust and pollen filter .............. 264
I
J
K
L
M