2007 Lexus GS450h alarm

138
2-4. Using other driving systems
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. 447) 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
■To ensure the radar sensor functions correctly
Do not do the following to the sensor or grille cover as doing so may cause the sen-
sor not to function correctly and could result in an accident.
●Stick or attach anything to them
●Leave them dirty
●Disassemble, subject them to strong shocks
●Modify or paint them
●Replace them with non-genuine parts

470
5-2. Steps to take in an emergency
Starting the hybrid system
Put the shift lever in “P” and apply the brakes.Hold the electronic k
ey close to
the power switch (within 0.4 in. [10
mm]). Make sure that the button
side of the key is facing away from
the power switch.
An alarm will sound to indicate that
the start function cannot detect the
key with the depleted battery if any
of the doors will be opened and
closed while this operation.
Press the power switch within 5 seconds after the buzzer sounds,
keeping the brake pedal depressed.
If the hybrid system still cannot be started, contact your Lexus dealer.
STEP1
STEP2
■Replacing the key battery
As this procedure is the temporary measure, it is recommended that the electronic
k
ey battery be replaced immediately. ( P. 3 9 3 )
STEP3

510
Alphabetical index
Alphabetical index
A/C (Air conditioning system) ..........191
ABS (Anti-lock Brake System) ........ 162
Active stabilizer suspension 
system...................................................... 162
Air conditioning system (A/C) Air conditioning filter ......................... 391
Automatic air conditioning 
system ..................................................... 191
Airbags Airbag operating conditions............. 71
Airbag precautions for your 
child.......................................................... 75
Airbag warning light .......................... 431
Curtain shield airbag 
precautions .......................................... 78
General airbag precautions ........... 75
Locations of airbags............................ 69
Modification and disposal of 
airbags .................................................... 79
Side airbag precautions .................... 75
Side and curtain shield airbags 
operating conditions ........................72
SRS airbags ............................................. 69
Alarm ............................................................ 64
Antenna .................................................... 209
Armrest ..................................................... 328
Ashtrays ..................................................... 321
Audio system Antenna .................................................. 209
Cassette player..................................... 212
CD player/changer ........................... 216
DVD information ............................... 252
DVD player/changer...................... 232
DVD video/audio ............................. 235
MP3/WMA disc ............................... 224
Optimal use.......................................... 256
Radio ........................................................ 203Steering switches ..............................
260
Video CD ............................................. 248
Automatic headlight leveling 
system ...................................................... 122
Automatic light control system........ 120
AVS (Adaptive Variable 
Suspension System) ............................ 161
BA (Brake Assist)................................... 162
Back-up lights Wattage ................................................. 488
Battery 12 volt battery ........................................ 371
Checking................................................. 371
Hybrid battery (Tra cti
on battery) ....5
If the 12 volt battery is 
discharged .......................................... 471
Preparing and checking  before winter...................................... 174
Bluetooth
®..............................................266
Brake Fluid .......................................................... 370
Parking brake........................................ 109
Care Exterior .................................................... 344
Interior..................................................... 346
Seat belts ................................................ 347
Cargo capacity........................................ 170
Cargo hooks .......................................... 332
CD player/changer............................. 232
Chains ......................................................... 176
Child-protectors....................................... 27
Child restraint system (CRS) Definition .................................................. 80
Installation ................................................ 83
A
B
C

515
Alphabetical index
Emergency Locking Retractor 
(ELR) ........................................................44
How to wear your seat belt.............. 42
How your child should wear 
the seat belt.......................................... 45
Pre-collision seat belts........................ 44
Pregnant women, 
proper seat belt use..........................44
Reminder light..................................... 433
Seat belt extenders .............................. 45
Seat belt pretensioners....................... 43
Seat heaters................................. 324, 326
Seat ventilators....................................... 326
Seating capacity ..................................... 173
Seats Child seats/child restraint 
system installation ............................. 83
Cleaning ................................................ 346
Driving position memory ................. 36
Head restraint ........................................ 39
Properly sitting in the seat................. 67
Seat adjustment ...................................... 34
Seat adjustment precautions ........... 34
Seat heaters.............................. 324, 326
Ventilated seats .................................. 326
Service reminder indicators .............. 115
Shift lever If the shift lever cannot be 
shifted from P ................................... 467
Transmission .......................................... 104
Shift lock system .................................... 467
Shopping bag hooks ........................... 332
Side airbags ................................................ 69
Side marker lights Switch ........................................................ 120
Side mirror Adjusting and folding ......................... 50Driving position memory ..................
36
Smart access system with 
push-button start Antenna location ..................................... 16
Entry function ............................................ 14
Starting the hybrid system ................ 101
Spare tire Inflation pressure ................................ 487
Spare tire ................................................ 457
Spark plug................................................ 484
Specifications ........................................ 480
Speedometer ............................................ 110
Steering wheel Adjustment ............................................... 48
Audio switches................................... 260
Driving position memory .................. 36
Storage compartment ......................... 314
Storage feature......................................... 311
Stuck If your vehicle becomes stuck ..... 478
Sun visors ................................................... 317
Switch Fog light switch ..................................... 123
Light switches ....................................... 120
Mode select switch ............................ 105
Power door lock switch .................... 26
Power switch........................................... 101
Power window switch ........................ 52
Window lock switch............................ 52
Wipers and washer switch ............. 124
Tail lights Switch........................................................ 120
Theft deterrent system Alarm........................................................... 64
T

518
What to do if...
What to do if...
A tire puncturesP. 4 5 5 /
456If you have a flat tire
The hybrid system does not start
P. 6 2Hybrid vehicle immobilizer system
P. 4 6 6If the hybrid system will not start
P. 4 7 1If the 12 volt battery is discharged
The shift lever cannot be 
moved outP. 4 6 7If 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. 4 7 5If your vehicle overheats
The key is lostP. 4 6 8If you lose your keys
The battery runs outP. 4 7 1If the 12 volt battery is discharged
The doors cannot be lockedP. 2 6Doors
The horn begins to soundP. 6 4Alarm
The vehicle is stuck in mud or
sandP. 4 7 8If the vehicle becomes stuck