2008 Lexus GS350 alarm

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1
1-6. Theft deterrent system
Before driving
GS_G_U
May 13, 2008 5:14 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 “ENGINE START STOP” switch to the ACCESSORY or
IGNITION ON mode. (The alarm will be deactivated or stopped
after a few seconds.)

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1-6. Theft deterrent system
GS_G_U
May 13, 2008 5:14 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.

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2-4. Using other driving systems
GS_G_U
May 13, 2008 5:14 pm
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. 506) 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

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3-3. Using the audio system
GS_G_U
May 13, 2008 5:14 pm
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

5
When trouble arises
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5-2. Steps to take in an emergency
GS_G_U
May 13, 2008 5:14 pm
Tr u n kTurn the mechanical key clock-
wise to open.
Changing “ENGINE START STOP” switch modes and starting the
engine
Put the shift lever in “P” and apply the brakes. Touch the Lexus emblem side of
the electronic key to the
“ENGINE START STOP” switch.
An alarm will sound to indicate that
the start function cannot detect the
electronic key that is touched to
the “ENGINE START STOP”
switch if any of the doors is opened
and closed while the key is touched
to the switch.
STEP1
STEP2

584
GS_G_U
May 13, 2008 5:14 pm
Alphabetical index
Alphabetical index
A/C ..............................................................217
ABS.............................................................. 184
ACCESSORY mode .......................... 122
Active stabilizer suspension 
system...................................................... 184
Adaptive variable 
suspension system ............................. 183
Air conditioning system Air conditioning filter ....................... 437
Automatic air conditioning 
system .................................................... 217
Airbags Airbag operating conditions........... 83
Airbag precautions for 
your child............................................... 87
Airbag warning light ........................489
Curtain shield airbag 
precautions .......................................... 90
General airbag precautions ........... 87
Locations of airbags............................80
Modification and disposal of 
airbags ...................................................... 91
Proper driving posture ...................... 78
Side airbag precautions .................... 87
Side and curtain shield airbags 
operating conditions ....................... 83
SRS airbags .............................................80
Alarm ............................................................ 75
Antenna ....................................................235
Anti-lock brake system ....................... 184
Armrest .....................................................356
Ashtrays ..................................................... 351 Audio system
Antenna.................................................. 235
AUX adapter .......................................287
Cassette player .................................. 238
CD player/changer .......................... 242
DVD information ...............................270
DVD player/changer ....................... 251
DVD video/audio............................. 254
MP3/WMA disc................................ 247
Optimal use ......................................... 282
Radio ........................................................229
Steering switches .............................. 288
Video CD ............................................. 266
Automatic headlight leveling 
system ......................................................144
Automatic light control system.........142
Automatic transmission If the shift lever cannot be 
shifted from “P” ............................... 524
Mode select switch ............................ 126
S mode ......................................................127
AUX adapter ......................................... 287
Back-up lights Wattage ................................................. 552
Battery 12 volt battery ........................................ 417
Checking................................................. 417
If the 12 volt battery is 
discharged ........................................ 529
Preparing and checking 
before winter...................................... 199
Bluetooth
®.............................................. 296
A
B

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Alphabetical index
GS_G_U
May 13, 2008 5:14 pm
Smart access system with 
push-button start Antenna location....................................24
Entry function...........................................22
Starting the engine ................................121
Spare tire Inflation pressure............................... 550
Spare tire..................................................513
Spark plug ................................................546
Specifications ........................................ 540
Speedometer........................................... 132
Steering wheel Adjustment............................................... 60
Audio switches ...................................288
Steering wheel position 
memory...................................................47
Storage compartment ........................ 344
Storage feature......................................340
Stuck If your vehicle becomes stuck.....536
Sun visors ................................................. 347
Switch “ENGINE START STOP” 
switch .......................................................121
Fog light switch .....................................145
Ignition switch..........................................121
Light switches ........................................ 142
Mode select switch............................. 126
Power door lock switch .....................37
Power window switch ........................ 64
Tire pressure warning 
reset switch ....................................... 422
Tire pressure 
warning select switch................... 424
Window lock switch ........................... 64
Wipers and washer switch .............146 Tachometer ..............................................132
Tail lights
Switch ........................................................ 142
Theft deterrent system Alarm........................................................... 75
Immobilizer system .............................. 73
Theft prevention labels........................... 77
Tire inflation pressure .........................550
Tire information Glossary ................................................ 562
Size ........................................................... 559
Tire identification number .............558
Uniform Tire Quality Grading ... 560
Tires Chains..................................................... 200
Checking................................................. 421
Compact spare tire............................ 513
If you have a flat tire ............... 512, 522
Inflation pressure ...............................550
Information ........................................... 556
Replacing ................................................ 512
Rotating tires.......................................... 421
Size ...........................................................550
Snow tires.............................................. 202
Tire pressure warning system....... 421
Tools.............................................................512
Total load capacity ................................ 198
Touch screen..........................................208
Towing Dinghy towing .................................... 205
Emergency towing ........................... 478
Trailer towing ...................................... 204
Traction control...................................... 184
Trip meter ..................................................132T

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GS_G_U
May 13, 2008 5:14 pm
What to do if...
What to do if...
A tire puncturesP. 5 1 2 /522If you have a flat tire
The engine does not start
P. 7 3Immobilizer system
P. 5 2 3If the engine will not start
P. 5 2 9If the 12 volt battery is discharged
The shift lever cannot be 
moved outP. 5 2 4If 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 3If your vehicle overheats
The key is lostP. 5 2 5If you lose your keys
The battery runs outP. 5 2 9If the 12 volt battery is discharged
The doors cannot be lockedP. 3 7Doors
The horn begins to soundP. 7 5Alarm
The vehicle is stuck in mud or
sandP. 5 3 6If the vehicle becomes stuck