key battery Lexus GS450h 2008 Using other driving systems / LEXUS 2008 GS450H OWNER'S MANUAL (OM30A96U)

TABLE OF CONTENTSIndex
4
GS_HV_U
December 12, 2007 3:33 pm
3-4. Using the hands-free system 
(for cellular phone)................ 306
Hands-free system 
(for cellular phone) .................. 306
Using the Bluetooth
® phone ..... 311
Setting the hands-free 
system ............................................ 326
3-5. Using the interior lights .......... 352 Interior lights list............................ 352
3-6. Using the storage features .... 355 List of storage fe atures.............. 355
3-7. Other interior features........... 362 Sun visors......................................... 362
Vanity mirror .................................. 363
Clock ................................................. 364
Outside temperature 
display ........................................... 365
Ashtrays ........................................... 366
Cigarette lighter ........................... 367
Power outlet .................................. 368
Seat heaters/vent ilators ............ 369
Armrest ............................................. 371
Rear sunshade ............................... 372
Floor mats........................................ 374
Trunk features................................ 375
Garage door opener .................. 377
Compass......................................... 383
Lexus Link System ....................... 387 4-1. Maintenance and care............ 402
Cleaning and protecting 
the vehicle exterior................... 402
Cleaning and protecting 
the vehicle interior ................... 405
4-2. Maintenance............................. 408 Maintenance requir ements .... 408
General maintena nce ................. 410
Emission inspection and 
maintenance (I/M) 
programs ....................................... 413
4-3. Do-it-yourself 
maintenance............................. 414
Do-it-yourself service 
precautions ................................... 414
Hood................................................... 417
Positioning a floor jack................ 418
Engine compartment.................. 420
Tires ................................................... 435
Tire inflation pressure................. 445
Wheels.............................................. 449
Air conditioning filter................... 451
Electronic key battery ................ 454
Checking and replacing 
fuses ................................................ 456
Headlight aim.................................. 471
Light bulbs ....................................... 474
4Maintenance and care

1
2
3
4
5
6
7
5
GS_HV_U
December 12, 2007 3:33 pm
5-1. Essential information .............. 482If your vehicle needs 
to be towed .................................. 482
If you think something is 
wrong ............................................ 488
Event data recorder ................... 489
5-2. Steps to take in an 
emergency ................................ 491
If a warning light turns on or a 
warning buzzer sounds... ........ 491
If a warning message is 
displayed...................................... 500
If you have a flat tire (Vehicles 
with standard tires) .................... 517
If you have a flat tire (Vehicles 
with run-flat tires) ...................... 527
If the hybrid system will 
not start......................................... 528
If the shift lever cannot be 
shifted from “P” .......................... 529
If you lose your keys ................... 530
If the electronic key does not 
operate properly ........................ 531
If the 12 volt battery is 
discharged ................................... 534
If your vehicle overheats .......... 538
If the vehicle becomes 
stuck................................................. 541 6-1. Specifications............................ 544
Maintenance data 
(fuel, oil level, etc.)..................... 544
Fuel information ........................... 553
Tire information ............................ 556
6-2. Customization .......................... 569 Customizable features .............. 569
6-3. Initialization ............................... 575 Items to initialize ........................... 575
Reporting safety defects for 
U.S. owners.................................. 578
Seat belt instructions for 
Canadian owners 
(in French) .................................... 579
Abbreviation list ....................... 582
Alphabetical index................... 584
What to do if............................... 594
5When trouble arises6Vehicle specifications
7For owners
Index

18
GS_HV_U
December 12, 2007 3:33 pm
CAUTION
■General precautions while driving
Driving under the influence: Never drive your vehicle when under the influence of
alcohol or drugs that have impaired your ability to operate your vehicle. Alcohol
and certain drugs delay reaction time, im pair judgment and reduce coordination,
which could lead to an accident that will hurt or kill you, your occupants or others.
Defensive driving: Always drive defensively. Anticipate mistakes that other drivers
or pedestrians might make and be ready to avoid accidents.
Driver distraction: Always give your full at tention to driving. Anything that distracts
the driver, such as adjusting controls, ta lking on a cellular phone or reading can
result in a collision with resulting death or serious injury to you, your occupants or
others.
■General precautions regarding children’s safety
Never leave children unattended in the vehi cle, and never allow children to have or
use the key.
Children may be able to start the vehicle or shift the vehicle into neutral. There is
also a danger that children may injure themselves by playing with the cigarette
lighter, the windows, the moon roof, or other features of the vehicle. In addition, heat
build-up or extremely cold temperatures insi de the vehicle can be fatal to children.
■Dispose of the hybrid battery (traction battery)
If your vehicle is disposed of without the hybrid battery having been removed, there
is a danger of serious electric shock if high voltage parts, cables and their connec-
tors are touched. In the event of that your vehicle must be disposed of, the hybrid
battery must be disposed of your Lexus dealer or a qualified service shop. If the
hybrid battery is not disposed of properly, they may cause electric shock that can
result in death or serious injury.

33
1
Before driving
GS_HV_U
December 12, 2007 3:50 pm
1-2. Key information
Keys
Using the mechanical keyTake out the mechanical key.
After using the mechanical key,
store it in the electronic key. Carry
the mechanical key together with
the electronic key. If the electronic
key battery is depleted or the smart
access system with push-button
start does not operate properly,
you will need the mechanical key.
The following keys are provided with the vehicle.
Electronic keys
• Operating the smart access system with push-button start
( P. 3 5 )
• Operating the wireless
remote control function 
( P. 4 7 )
Mechanical keys
Key number plate
■When required to leave a key to the vehicle with a parking attendant
Turn the trunk opener main switch OFF an d lock the glove box as circumstances
demand. ( P. 5 5 , 3 5 6 ) 
Remove the mechanical key for your own use and provide the attendant with the
electronic key only.

39
1-3. Opening, closing and locking the doors and trunk
1
Before driving
GS_HV_U
October 23, 2015 1:02 pm
■Operation signals
●Doors: A buzzer sounds and the emergency flashers flash to indicate that the
doors have been locked/unlocked. (Locked: Once; Unlocked: Twice)
●Windows and moon roof: A buzzer sounds when the windows and moon roof
begin to close.
■Door lock buzzer
If a door is not fully closed, a buzzer sounds continuously if an attempt to lock the
door is made. Fully close the door to stop the buzzer, and lock the vehicle once
more.
■Conditions affecting operation
The smart access system with push-button start uses weak radio waves. In the fol-
lowing situations, the communication between key and vehicle may be affected,
preventing the smart access system with push-button start and wireless remote
control from operating properly. (Way of coping: P. 5 3 1 )
●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 has come into contact with, or is covered by a metallic
object
●When multiple electronic keys are in the vicinity
●When carrying or using the electronic key together with the following devices
that emit radio waves
• Another vehicle’s electronic key
• A wireless key that emits radio waves
• Personal computer
●If window tint with a metallic content or metallic objects are attached to the rear
window

41
1-3. Opening, closing and locking the doors and trunk
1
Before driving
GS_HV_U
October 23, 2015 1:02 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. 9 0 )
■Battery-saving function
In the following circumstances, the entry func tion is disabled in order to prevent the
vehicle and electronic key batteries from discharging.
●When the entry function has not been used for 2 months 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. 47) or the mechanical key ( P. 5 3 1 )
■Electronic key battery depletion
●The standard battery life is 1 to 2 years. (The battery becomes depleted even if
the electronic key is not used.) If the smart access system with push-button start
or the wireless remote control function does not operate, or the detection area
becomes smaller, the battery may be depleted. Replace the battery when nec-
essary. (  P. 4 5 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
• Recharging cellular phones or cordless phones
• Table lamps
STEP3

45
1-3. Opening, closing and locking the doors and trunk
1
Before driving
GS_HV_U
October 23, 2015 1:02 pm
■If the smart access system with push-button start does not operate properly
●Locking and unlocking the doors and trunk: Use the mechanical key. 
(  P. 5 3 1 )
●Starting the hybrid system:  P. 5 3 2
■When the electronic key battery is fully depleted 
 P. 4 5 4
■Customization that can be configured at Lexus dealer
Settings (e.g. smart access system with push-button start) can be changed. 
(Customizable features  P. 5 6 9 )
■Certification for the smart access system with push-button start
For vehicles sold in the U.S.A.
NOTE:
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.
FCC WARNING: 
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
For vehicles sold in Canada
NOTE:
This device complies with RSS-210 of Industry Canada. 
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must a ccept any interference, including interfer-
ence that may cause undesired operation of the device.
FCC ID: NI4TMLF-1

48
1-3. Opening, closing and locking the doors and trunk
GS_HV_U
October 23, 2015 1:02 pm
■Door lock buzzer
P. 3 9
■Security feature
P. 4 3
■If the wireless remote control does not operate properly
● Locking and unlocking the doors an d trunk: Use the mechanical key. 
(  P. 5 3 1 )
●Starting the hybrid system. ( P. 5 3 2 )
■Electronic key battery depletion
P. 4 1
■When the electronic key battery is fully depleted
P. 4 5 4
■Conditions affecting operation
P. 3 9
■Customization that can be configured at Lexus dealer
Settings (e.g. 2-step unlocking function, trunk unlocking function) can be changed.
(Customizable features P. 5 6 9 )

141
2-1. Driving procedures
2
When driving
GS_HV_U
May 13, 2008 3:11 pm
■When the electronic key battery is discharged
P. 4 5 4
■Conditions affecting operation
P. 3 9
■Leak detection pump
Several hours after the hybrid system is turned off, you may hear a sound coming
from underneath the luggage compartment for several minutes. This is normal
operation and does not indicate a malfunction.
CAUTION
■When starting the hybrid system
Always start the hybrid system while sitting in the driver’s seat. Do not press the
accelerator pedal while starting the hybrid system under any circumstances. 
Doing so may cause an accident resu lting in death or serious injury.
■Stopping the hybrid system in an emergency
If you want to stop the hybrid system in an emergency while driving the vehicle,
push and hold the “POWER” switch for more than 3 seconds. 
However, do not touch the “POWER” switch while driving except in an emergency.
If the hybrid system stops while the vehicle is being driven, this could lead to an
unexpected accident.
NOTICE
■To prevent 12 volt battery discharge
Do not leave the “POWER” switch in ACCESSORY or ON mode for long periods
without the hybrid system on.
■When starting the hybrid system
●Do not race the hybrid system.
●If the hybrid system becomes difficult to st art or stalls frequently, have the hybrid
system checked immediately.

160
2-3. Operating the lights and windshield wipers
GS_HV_U
May 19, 2008 9:00 pm
■Automatic light off system
The headlights and tail lights turn off 30 seconds after all doors are closed if the
“POWER” switch has been switched to ACCESSORY mode or turned OFF while
the headlights are turned on. (The lights turn off immediately if the button on the
key is pressed after all doors are locked.)
To turn the lights on again, switch to ON mode, or turn the light switch off once and
then back to the or position.
■Automatic headlight leveling system
The level of the headlights is automatica lly adjusted according to the number of
passengers and the loading condition of the vehicle to ensure that the headlights do
not interfere with other road users.
■If the indicator flashes...
It may indicate a malfunction in the system. Contact your Lexus dealer.
■Customization that can be configured at Lexus dealer
Settings (e.g. light sensor sensitivity) can be changed. 
(Customizable features P. 5 7 2 )
NOTICE
■To prevent 12 volt battery discharge
Do not leave the lights on longer than necessary when the hybrid system is off.