2012 Lexus GX460 change key battery

44
1-2. Opening, closing and locking the doors
GX460_U.S.A. (OM60J00U)
■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 4 )
●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 4 4 )
• 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 4 4
■Customization
Settings (e.g. smart access system with push-button start) can be changed.
(Customizable features →P. 7 8 2 )

49
1-2. Opening, closing and locking the doors
1
Before driving
GX460_U.S.A. (OM60J00U)
■Conditions affecting operation
→P. 3 9
■If the wireless remote control does not operate properly
Locking and unlocking the doors: Use the mechanical key. ( →P. 7 3 9 )
■Key battery depletion
→P. 4 4
■When the electronic key battery is fully depleted
→P. 6 4 4
■Customization
Settings (e.g. wireless remote control system) can be changed.
(Customizable features →P. 7 8 2 )

522
3-5. Using the interior lights
GX460_U.S.A. (OM60J00U)
■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. 7 8 2 )

740
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
Changing “ENGINE START STOP” switch modes and 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.
To change “ENGINE START ST OP” switch modes: Within 10
seconds of the buzzer sounding, release the brake pedal and
press the “ENGINE START STOP” switch. Modes can be
changed each time the switch is pressed. ( →P. 1 8 1 )
To start the engine: 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 4 4 )
STEP3

821
Alphabetical index
GX460_U.S.A. (OM60J00U)
Back doorBack door ................................................ 53
Wireless remote control.................... 47
Back-up lights
Replacing light bulbs ......................... 671
Wattage ................................................. 763
Battery Battery..................................................... 623
Checking ............................................... 623
If the vehicle has discharged
battery.................................................... 741
Preparing and checking
before winter.................................... 366
Bluetooth
®*...............................464, 485
Bottle holders/door pockets........... 529
Brake Fluid ............................................................ 619
Parking brake ........................................ 193
Brake assist ............................................. 335
Brake in tips .............................................. 169
Brightness control Multi-information display light
control ................................................... 215
Instrument cluster light control.....196
Care Exterior .................................................. 588
Interior..................................................... 593
Seat belts ............................................... 594
Cargo capacity ..................................... 359
Cargo hooks .......................................... 558
Cargo net hooks .................................. 559 CD player/changer
*.......................... 423
Center differential lock/unlock ...... 323
Chains ....................................................... 366
Child restraint system
Booster seats, definition .................. 146
Booster seats, installation ............... 154
Convertible seats, definition.......... 146
Convertible seats, installation ....... 154
Front passenger occupant classification system ....................... 139
Infant seats, definition ........................ 146
Infant seats, installation ..................... 154
Installing CRS with lower anchorages......................................... 152
Installing CRS with seatbelts ......... 154
Installing CRS with top straps....... 160
Child safety Airbag precautions .............................132
Battery precautions ..............623, 743
Child restraint system ....................... 146
Child-protectors .....................................51
How your child should wear
the seatbelt........................................... 88
Installing child restraints..................... 151
Moon roof precautions....................108
Power window lock switch .............. 101
Power window precautions .......... 103
Removed electronic key
battery precautions ...................... 646
Seat belt extender precautions...... 92
Seat belt precautions ..........................89
Seat heater precautions................. 553B
C
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.