2010 Lexus GX460 change key battery

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1-2. Opening, closing and locking the doors and trunk
1
Before driving
GX460_U.S.A. (OM60E69U)
■Electronic key battery depletion
●The standard battery life is 1 to 2 years.
●If the battery becomes low, an alarm will sound in the cabin when the engine will
stop. (P. 3 4 )
●As the electronic key always transmits radio waves, the battery will become
depleted even if the electronic key is not used. The following symptoms indicate
that the electronic key battery may be depleted. Replace the battery when nec-
essary. ( P. 6 4 2 )
• The smart access system with push-but ton start or the wireless remote con-
trol does not operate.
• The detection area becomes smaller.
• The LED indicator on the key surface does not turn on.
●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
• Cellular phones, cordless phones and battery chargers
• Recharging cellular phones or cordless phones
•Glass top ranges
• Table lamps
■When the electronic key battery is fully depleted
 P. 6 4 2
■Customization
Settings (e.g. smart access system with push-button start) can be changed. 
(Customizable features  P. 7 8 1 )

50
1-2. Opening, closing and locking the doors and trunk
GX460_U.S.A. (OM60E69U)
■Conditions affecting operation
P. 4 0
■If the wireless remote control does not operate properly
Locking and unlocking the doors: Use the mechanical key. ( P. 7 3 8 )
■Key battery depletion
P. 4 5
■When the electronic key battery is fully depleted
P. 6 4 2
■Customization
Settings (e.g. wireless remote control system) can be changed. 
(Customizable features P. 7 8 1 )

514
3-5. Using the interior lights
GX460_U.S.A. (OM60E69U)
■Illuminated entry system
The lights automatically turn on/off according to “ENGINE START STOP” switch
mode, the presence of the electronic key, whether the doors are locked/unlocked,
and whether the doors are open/closed.
■To prevent battery discharge
If the following lights remain on when the door is not fully closed and the personal/
interior light main switch is in the door position, the lights will go off automatically
after 20 minutes:
●Personal/interior light
●Inside door handle lights
●Footwell lights
●Running board lights
■Customization
Settings (e.g. adjust the time elapsed befo re the interior lights automatically turn
off) can be changed. (Customizable features P. 7 8 1 )

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Alphabetical index
GX460_U.S.A. (OM60E69U)
Back-up lightsReplacing light bulbs ....................... 669
Wattage ................................................... 761
Battery Battery......................................................622
Checking ................................................622
If the vehicle has discharged 
battery.................................................... 741
Preparing and checking 
before winter ...................................... 361
Bluetooth
®...................................456, 477
Bottle holders/door pockets........... 520
Brake Fluid ............................................................618
Parking brake ........................................ 193
Brake assist ............................................. 330
Brake in tips .............................................. 169
Brightness control Multi-information display light 
control ................................................... 216
Instrument cluster light control.....196
Care Exterior .................................................. 588
Interior..................................................... 592
Seat belts ............................................... 593
Cargo capacity ..................................... 354
Cargo hooks ...........................................557
Cargo net hooks .................................. 559
CD player/changer .............................. 416
Center differential lock/unlock .......318
Chains......................................................... 361
Child restraint system Booster seats, definition................... 147
Booster seats, installation ................155
Convertible seats, definition .......... 147 Convertible seats, installation ....... 155
Front passenger occupant

classification system ....................... 140
Infant seats, definition .........................147
Infant seats, installation ..................... 155
Installing CRS with lower 
anchorages......................................... 153
Installing CRS with seatbelts ......... 155
Installing CRS with top straps......... 161
Child safety Airbag precautions ............................ 133
Battery precautions .............. 622, 743
Child restraint system ........................147
Child-protectors ................................... 52
How your child should wear 
the seatbelt............................................89
Installing child restraints................... 152
Moon roof precautions....................108
Power window lock switch .............. 101
Power window precautions .......... 103
Removed electronic key 
battery precautions .......................644
Seat belt extender precautions...... 93
Seat belt precautions ..........................90
Seat heater precautions................. 553
Child-protectors ...................................... 52
Cleaning Exterior................................................... 588
Interior .....................................................592
Seat belts ............................................... 593
Clock .........................................................533
Coat hooks ..............................................555
Coin holder .............................................. 519
Compass .................................................. 575
Condenser ................................................617
Console box ............................................ 517
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