2008 Lexus GS450h alarm

90
1-7. Theft deterrent system
GS_HV_U
December 12, 2007 3:30 pm
Alarm
The system sounds the alarm and flashes lights when forcible entry is
detected.
■Triggering of the alarm
The alarm is triggered in the following situations.
●A locked door or trunk is unlocked or opened in any way other
than using the smart access system with push-button start, wire-
less remote control or mechanical key. (The doors will lock again
automatically.)
● The hood is opened while the vehicle is locked.
■ Setting the alarm system
Close the doors, trunk and
hood, and lock all doors.
The system will be set automati-
cally after 30 seconds.
The indicator light changes from
being on to flashing when the
system is set.
■Deactivating or stopping the alarm
Do one of the following to deactivate or stop the alarm.
●Unlock the doors or trunk.
● Turn the “POWER” switch to the ACCESSORY or ON mode.
(The alarm will be deactivated or stopped after a few seconds.)

91
1-7. Theft deterrent system
1
Before driving
GS_HV_U
December 12, 2007 3:30 pm
■Items to check before locking the vehicle
To prevent unintended triggering of the alarm and vehicle theft, make sure of the
following.
●Nobody is in the vehicle.
●The windows and moon roof (if equipped) are closed before the alarm is set.
●No valuables or other personal items are left in the vehicle.
■Tr i g g e r i n g o f t h e a l a r m
The alarm may be triggered in the following situations.
(Stopping the alarm deactivates the alarm system.)
●A person inside the vehicle opens a door, the trunk or hood.
●The 12 volt battery is recharged or replaced when the vehicle is locked.
■When the 12 volt battery is disconnected
Be sure to cancel the alarm system. 
If the 12 volt battery is disconnected before canceling the alarm, the system may be
triggered when the battery is reconnected.
■Pa n i c m o d e
When is pushed for longer than about
one second, the headlights/tail lights/emer-
gency flashers will flash, the front and rear
interior lights will come on, and an alarm will
sound for about 60 seconds to deter any
person from trying to break into or damage
your vehicle.
To stop the alarm, push any button on the
wireless remote control.

178
2-4. Using other driving systems
GS_HV_U
January 4, 2008 10:02 am
CAUTION
■When the radar sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary when any of the following types of vehicles are in
front of you. 
As the sensor may not be able to correctly detect these types of vehicles, the prox-
imity alarm ( P. 509) will not be activated, and an accident may result.
●Vehicles that cut in suddenly
●Vehicles traveling at low speeds
●Vehicles that are not moving
●Vehicles with small rear ends (tra ilers with no load on board etc.)
●Motorcycles traveling in the same lane
■Conditions under which the vehicle-to-vehicle distance control may not function
correctly
Apply the brakes as necessary in the foll owing conditions as the radar sensor may
not be able to correctly detect vehicles ahead, and an accident may result.
●When water or snow thrown up by the surrounding vehicles hinders the function-
ing of the sensor
●When your vehicle is pointing upwards (caused by a heavy load in the trunk, etc.)
●When the road curves or when the lanes are narrow
●When steering wheel operation or your position in the lane is unstable
●When the vehicle ahead of you decelerates suddenly

247
3-3. Using the audio system
3
Interior features
GS_HV_U
December 13, 2007 10:50 am
The type of program changes each time the button is pressed.
●ROCK
● EASYLIS (Easy listening)
● CLS/JAZZ (Classical music and Jazz)
● R & B (Rhythm and Blues)
● INFORM (Information)
● RELIGION
● MISC (Miscellaneous)
● ALARM (Emergency messages)
If the system receives no RDS statio ns, “NO PTY” appears on the display.
When a program is set, “TYPE SEEK” appears.
Touch on the screen or press  or  on .
The radio seeks or scans the station by the relevant program type.
If no radio station of that type is found, “NOTHING” appears on the
screen.
■ Displaying radio text messages
Touch on the screen.
If “MSG” appears on the screen, a
text message may be displayed.
STEP2

532
5-2. Steps to take in an emergency
GS_HV_U
December 12, 2007 3:50 pm
Tr u n kTurn the mechanical key clock-
wise to open.
Changing “POWER” switch modes and starting the hybrid system
Put the shift lever in “P” and apply the brakes. Touch the Lexus emblem side of
the electronic key to the
“POWER” switch.
An alarm will sound to indicate that
the start function cannot detect the
electronic key that is touched to
the “POWER” switch if any of the
doors is opened and closed while
the key is touched to the switch.
STEP1
STEP2

584
GS_HV_U
December 12, 2007 3:50 pm
Alphabetical index
Alphabetical index
A/C ............................................................ 232
ABS............................................................ 200
ACCESSORY mode .......................... 139
Active stabilizer suspension 
system.................................................... 200
Adaptive variable 
suspension system ............................. 199
Air conditioning system Air conditioning filter .........................451
Automatic air conditioning 
system .................................................. 232
Airbags Airbag operating conditions........... 98
Airbag precautions for 
your child..............................................102
Airbag warning light ........................ 492
Curtain shield airbag 
precautions ........................................ 105
General airbag precautions ..........102
Locations of airbags............................ 95
Modification and disposal of 
airbags .................................................. 106
Proper driving posture ...................... 93
Side airbag precautions ...................102
Side and curtain shield airbags 
operating conditions ....................... 98
SRS airbags ............................................. 95
Alarm ............................................................90
Antenna ....................................................250
Anti-lock brake system ..................... 200
Armrest ...................................................... 371
Ashtrays ....................................................366 Audio system
Antenna.................................................. 250
AUX adapter ...................................... 302
Cassette player .................................. 253
CD player/changer ..........................257
DVD information .............................. 285
DVD player/changer ..................... 266
DVD video/audio............................. 269
MP3/WMA disc................................262
Optimal use .......................................... 297
Radio ........................................................244
Steering switches .............................. 303
Video CD ............................................... 281
Automatic headlight leveling 
system ..................................................... 160
Automatic light control system........ 158
AUX adapter ......................................... 302
Back-up lights Wattage ................................................. 552
Battery 12 volt battery ...................................... 430
Checking............................................... 430
Hybrid battery 
(Traction battery)............................... 26
If the 12 volt battery is 
discharged ........................................ 534
Preparing and checking 
before winter...................................... 215
Bluetooth
®................................................. 311
Brake Fluid ...........................................................429
Parking brake........................................ 147
Brake assist .............................................200
A
B

590
Alphabetical index
GS_HV_U
December 12, 2007 3:50 pm
Smart access system with 
push-button start Antenna location....................................37
Entry function.......................................... 35
Starting the 
hybrid system .................................... 138
Spare tire Inflation pressure................................. 551
Spare tire................................................. 518
Spark plug ............................................... 548
Specifications .........................................544
Speedometer........................................... 148
Steering wheel Adjustment................................................73
Audio switches ...................................303
Steering wheel position 
memory.................................................. 60
Storage compartment ........................359
Storage feature......................................355
Stuck If your vehicle becomes stuck.......541
Sun visors ................................................. 362
Switch Fog light switch ...................................... 161
Ignition switch....................................... 138
Light switches ....................................... 158
Mode select switch............................. 143
Power door lock switch .................... 50
“POWER” switch ............................... 138
Power window switch ......................... 77
Tire pressure warning 
reset switch ....................................... 436
Tire pressure 
warning select switch...................438
Window lock switch ............................ 77
Wipers and washer switch ............. 162 Tachometer ............................................. 148
Tail lights
Switch ........................................................158
Theft deterrent system Alarm.......................................................... 90
Immobilizer system ............................. 88
Theft prevention labels.......................... 92
Tire inflation pressure .......................... 551
Tire information Glossary ................................................ 562
Size ........................................................... 559
Tire identification number .............558
Uniform Tire Quality Grading ... 560
Tires Chains....................................................... 216
Checking............................................... 435
Compact spare tire............................518
If you have a flat tire ............... 517, 527
Inflation pressure ................................. 551
Information ........................................... 556
Replacing ................................................ 517
Rotating tires........................................ 435
Size ............................................................. 551
Snow tires................................................ 218
Tire pressure warning system..... 435
Tools.............................................................517
Total load capacity ................................. 214
Touch screen.......................................... 224
Towing Dinghy towing .......................................221
Emergency towing ........................... 482
Trailer towing ...................................... 220
Traction control.....................................200T

594
GS_HV_U
December 12, 2007 3:50 pm
What to do if...
What to do if...
A tire puncturesP. 5 1 7 /527If you have a flat tire
The hybrid system does not start
P. 8 8Immobilizer system
P. 5 2 8If the hybrid system will not start
P. 5 3 4If the 12 volt battery is discharged
The shift lever cannot be 
moved outP. 5 2 9If the shift lever cannot be shifted 
from “P”
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming 
from under the hood
P. 5 3 8If your vehicle overheats
The key is lostP. 5 3 0If you lose your keys
The battery runs outP. 5 3 4If the 12 volt battery is discharged
The doors cannot be lockedP. 5 0Doors
The horn begins to soundP. 9 0Alarm
The vehicle is stuck in mud or
sandP. 5 4 1If the vehicle becomes stuck