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46
1-2. Opening, closing and locking the doors
GX460_OM_OM60J63U_(U)
■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
stops. (→P. 3 6 )
●As the electronic key always receives 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 5 2 )
• The smart access system with push-button 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 5 2
■Customization
Settings (e.g. smart access system with push-button start) can be changed.
(Customizable features →P. 788)
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51
1-2. Opening, closing and locking the doors
1
Before driving
GX460_OM_OM60J63U_(U)
■Conditions affecting operation
→P. 4 1
■If the wireless remote control does not operate properly
Locking and unlocking the doors: Use the mechanical key. ( →P. 74 4 )
■Key battery depletion
→P. 4 6
■When the electronic key battery is fully depleted
→P. 6 5 2
■Customization
Settings (e.g. wireless remote control system) can be changed.
(Customizable features →P. 7 8 8 )
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Page 529 of 846
528
3-5. Using the interior lights
GX460_OM_OM60J63U_(U)
■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 before the interior lights automatically turn
off) can be changed. (Customizable features →P. 788)
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Page 746 of 846

5
When trouble arises
745
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
Starting the engine
Ensure that the shift lever is in P and depress the brake pedal.Touch the Lexus emblem side of
the electronic key to the
“ENGINE START STOP” switch.
If any of the doors is opened or
closed while the key is being
touched to the switch, an alarm will
sound to indicate that the start
function cannot detect the elec-
tronic key.
Press the “ENGINE START STOP” switch within 10 seconds of
the buzzer sounding, keeping the brake pedal depressed.
In the event that the “ENGINE START STOP” switch still cannot be oper-
ated, contact your Lexus dealer.
STEP1
STEP2
■Stopping the engine
Shift the shift lever to P and press the “ENGINE START STOP” switch as you nor-
mally do when stopping the engine.
■Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the elec-
tronic key battery be replaced immediately when the battery is depleted.
( → P. 6 5 2 )
■Changing “ENGINE START STOP” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press the
“ENGINE START STOP” switch.
The engine does not start and modes w ill be changed each time the switch is
pressed. ( →P. 1 8 5 )
STEP3
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827
Alphabetical index
GX460_OM_OM60J63U_(U)
Back doorBack door .................................................57
Wireless remote control....................49
Back-up lights
Replacing light bulbs ....................... 679
Wattage ................................................. 769
Battery Battery.......................................................631
Checking ................................................. 631
If the vehicle has discharged
battery.................................................. 746
Preparing and checking
before winter...................................... 371
Bluetooth
®*.................................470, 491
Bottle holders/door pockets........... 535
Brake Fluid ...........................................................627
Parking brake ........................................ 197
Brake assist ............................................. 339
Brake in tips .............................................. 173
Brightness control Multi-information display light
control ................................................... 219
Instrument cluster light control...200
Care Exterior ...................................................596
Interior.......................................................601
Seat belts ............................................... 602
Cargo capacity ..................................... 364
Cargo hooks .......................................... 565
Cargo net hooks .................................. 566 CD player/changer
*.......................... 429
Center differential lock/unlock ...... 327
Chains .........................................................371
Child restraint system
Booster seats, definition .................. 150
Booster seats, installation ............... 158
Convertible seats, definition.......... 150
Convertible seats, installation ....... 158
Front passenger occupant classification system ....................... 143
Infant seats, definition ........................ 150
Infant seats, installation ..................... 158
Installing CRS with lower anchorages......................................... 156
Installing CRS with seatbelts ......... 158
Installing CRS with top straps....... 164
Child safety Airbag precautions ............................ 136
Battery precautions ............... 631, 748
Child restraint system ....................... 150
Child-protectors ................................... 53
How your child should wear
the seatbelt............................................ 92
Installing child restraints................... 155
Moon roof precautions...................... 112
Power window lock switch ............ 105
Power window precautions .......... 107
Removed electronic key
battery precautions ...................... 654
Seat belt extender precautions......96
Seat belt precautions .......................... 93
Seat heater precautions................. 559B
C
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.
GX460_OM_OM60J63U_(U).book Page 827 Thursday, March 29, 2012 9:10 AM