2012 Lexus GX460 remote start

624
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60J00U)
■Before recharging
When recharging, the battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following before recharging:
●If recharging with the battery installed on the vehicle, be sure to disconnect the
ground cable.
●Make sure the power switch on the charger is off when connecting and discon-
necting the charger cables to the battery.
■After recharging/reconnecting the battery
●Unlocking the doors using the smart key system may not be possible immedi-
ately after reconnecting the battery. If this happens, use the wireless remote
control or the mechanical key to lock/unlock the doors.
●Start the engine with the “ENGINE START STOP” switch in ACCESSORY
mode. The engine may not start with the “ENGINE START STOP” switch
turned OFF. However, the engine will operate normally from the second
attempt.
●The “ENGINE START STOP” switch mode is recorded by the vehicle. If the bat-
tery is reconnected, the vehicle will return the “ENGINE START STOP” switch
mode to the status it was in before the battery was disconnected. Make sure to
turn off the engine before disconnect the battery. Take extra care when con-
necting the battery if the “ENGINE START STOP” switch mode prior to dis-
charge is unknown.
If the system will not start even after multiple attempts, contact your Lexus dealer.

645
4-3. Do-it-yourself maintenance
4
Maintenance and care
GX460_U.S.A. (OM60J00U)
■Use a CR1632 lithium battery
●Batteries can be purchased at your Lexus dealer, local electrical appliance
shops or camera stores.
●Replace only with the same or equivalent type recommended by the manufac-
turer.
●Dispose of used batteries according to the local laws.
■If the electronic key battery is discharged
The following symptoms may occur.
●The smart access system with push-button start and wireless remote control will
not function properly.
●The operational range is reduced.
Remove the depleted battery.
Insert a new battery with the “+”
terminal facing up.
STEP3

654
4-3. Do-it-yourself maintenance
GX460_U.S.A. (OM60J00U)
50ECU-B10 A
BODY ECU, meter, heater, steering
sensor, wireless remote control, seat
position memory, tilt and telescopic
steering, multi display, Smart access
system with push button start, folding
seat, cool box, DSS#2 ECU, steering
switch, D-module switch, overhead
module
51WSH FR NO.27. 5 ADSS#1 ECU
52H-LP RH-LO15 AHeadlight low beam (right), headlight
leveling system
53H-LP LH-LO15 AHeadlight low beam (left), headlight
leveling system
54INJ10 ACoil, injector, ignition, noise filter
55EFI NO.210 A
O2 SSR, AFM, ACIS VSV, AI
COMB, KEY OFF PUMP, EYP VSV,
EGR VALVE, CANISTER VSV, AI
VSV RLY, AI PUMP HTR RLY
56WIP FR NO.27. 5 ADSS#1 ECU
57WSH RR15 ARear window washer
58SPARESpare fuse
59SPARESpare fuse
60SPARESpare fuse
FuseAmpereCircuit

5
When trouble arises
739
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
If the electronic key does not operate properly
Locking and unlocking the doors and key linked functions
Use the mechanical key ( →P. 2 6 )
in order to perform the following
operations (driver’s door only):
Locks all the doors
Closes the windows and moon
roof (turn and hold)
*
Unlocks the door
Turning the key rearward unlocks
the driver’s door. Turning the key
once again unlocks the other
doors.
Opens the windows and moon
roof (turn and hold)
*
*
: This setting must be customized at your Lexus dealer.
If communication between the electronic key and vehicle is interrupted
(→ P. 39) or the electronic key cannot be used because the battery is
depleted, the smart access system with push-button start and wireless
remote control cannot be used. In such cases, the doors can be opened or
the engine can be started by following the procedure below.

787
6-2. Customization
6
Vehicle specifications
GX460_U.S.A. (OM60J00U)
Smart
access
system with
push-
button start
and wire-
less remote
control
(
→P. 2 9 ,
47)
LO C K F E ED -
BACK VOL-
UME
(Adjust the vol-
ume of confor-
mation buzzer
sounds when
the vehicle is
locked or
unlocked)
7
Off
O–OO
1 to 6
LO C K /
UNLOCK
ANSWER
BACK
RESPONSE
(Enable/disable
the operation of
the emergency
flashers when
the vehicle is
locked or
unlocked)
OnOffO–OO
ItemFunctionDefault
settingCustomized setting

788
6-2. Customization
GX460_U.S.A. (OM60J00U)
Smart
access sys-
tem with
push-but-
ton start
and wire-
less remote
control
(
→P. 2 9 ,
47)
AUTO.
RELOCK TIME
ADJUSTMENT
(Adjust the time
elapsed before
the automatic
door lock func-
tion is activated
if a door is not
opened after
being unlocked)
60 seconds
Off
O–OO30 seconds
120 seconds
Open door
reminder
buzzer (When
locking the
vehicle)
OnOff–––O
Glass hatch
opening opera-
tion (When the
electronic key is
used)
Push and
hold (Short)
Push twice
–––O
One short push
Push and
hold (Long)
Off
ItemFunctionDefault settingCustomized setting

793
6-2. Customization
6
Vehicle specifications
GX460_U.S.A. (OM60J00U)
Illumination
(
→P. 5 1 9 )
Operation after
the “ENGINE
START STOP”
switch is turned
to OFF
*4
OnOff–––O
Operation
when the doors
are unlocked
with the smart
access system
with push-but-
ton start or the
wireless remote
control func-
tion
*4
OnOff–––O
Operation
when you
approach the
vehicle with the
electronic key
on your per-
son
*4
OnOff–––O
ItemFunctionDefault settingCustomized setting

825
Alphabetical index
GX460_U.S.A. (OM60J00U)
Hill-start assist control ....................... 336
Hood ......................................................... 608
HooksCargo ......................................................558
Cargo hooks .......................................559
Coat .........................................................555
Horn............................................................. 194
I/M test ..................................................... 602
Identification Engine ..................................................... 753
Vehicle.................................................... 753
Ignition switch .......................................... 179
Ignition switch light Ignition switch light .............................519
Illuminated entry system ....................522
Indicator lights .........................................198
Initialization
Items to initialize .................................802
Inside door handle light ....................... 519
Inside rear view mirror.......................... 95
Instrument cluster light control ........ 196
Interior lights Interior lights ..........................................519
Switch ........................................................ 521
Wattage ................................................. 763
Intuitive parking assist .........................266 Jack
Vehicle-equipped jack ..................... 721
Jack handle................................................721
Keyless entry ................................................. 47
Keys
Electronic key ......................................... 26
Engine switch .......................................... 29
If you lose your keys .........................738
If the electronic key does not operate properly ............................ 739
Key number plate ................................. 26
Keyless entry ........................................... 47
Keys ............................................................. 26
Mechanical key ...................................... 26
Wireless remote control key .......... 47
Kinetic Dynamic Suspension System (KDSS) ................................... 336
Lane Departure Alert ......................... 275
LDA ............................................................ 275
License plate lights Replacing light bulbs ........................ 672
Light bulbs
Replacing ...............................................662
Wattage.................................................. 763
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*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.