2012 Lexus GX460 stop start

182
2-1. Driving procedures
GX460_U.S.A. (OM60J00U)
When stopping the engine with the shift lever in a position other than PIf the engine is stopped with the shift lever in a position other than P, the
“ENGINE START STOP” switch will not be turned off but instead be
turned to ACCESSORY mode. Perform the following procedure to turn
the switch off: Check that the parking brake is set.
Shift the shift lever to P.
Check that the indicator on the “ENGINE START STOP” switch
is illuminated in amber and then press the “ENGINE START
STOP” switch once.
Check that the indicator on the “ENGINE START STOP” switch
is off.
■Auto power off function
If the vehicle is left in ACCESSORY or IGNITION ON mode (the engine is not
running) for more than an hour with the shift lever in P, the “ENGINE START STOP”
switch will automatically turn off. However, this function cannot entirely prevent bat-
tery discharge. Do not leave the vehicle with the “ENGINE START STOP” switch in
ACCESSORY or IGNITION ON mode for long periods of time when the engine
is not running.
■Operation of the “ENGINE START STOP” switch
When operating the “ENGINE START STOP” switch, one short, firm press is
enough. If the switch is pressed improperly, the engine may not start or the
“ENGINE START STOP” switch mode may not change. It is not necessary to press
and hold the switch.
STEP1
STEP2
STEP3
STEP4

183
2-1. Driving procedures
2
When driving
GX460_U.S.A. (OM60J00U)
■Electronic key battery depletion
→P. 4 4
■Conditions affecting operation
→P. 3 9
■Notes for the entry function
→P. 4 1
■If the engine does not start
The engine immobilizer system may not have been deactivated. ( →P. 115)
■Steering lock
After turning the “ENGINE START STOP” switch off and opening and closing the
doors, the steering wheel will be locked du e to the steering lock function. Operat-
ing the “ENGINE START STOP” switch again automatically cancels the steering
lock.
■When the steering lock cannot be released
The green indicator light on the “ENGINE
START STOP” switch will flash and a mes-
sage will be shown on the multi-information
display. Press the “ENGINE START STOP”
switch again while turning the steering wheel
left and right.

184
2-1. Driving procedures
GX460_U.S.A. (OM60J00U)
■Steering lock motor overheating prevention
To prevent the steering lock motor from overheating, the motor may be suspended
if the engine is turned on and off repeatedly in a short period of time. In this case,
refrain from operating the engine. After about 10 seconds, the steering lock motor
will resume functioning.
■When the “ENGINE START STOP” switch indicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Lexus
dealer immediately.
■If the electronic key battery is depleted
→ P. 6 4 4
CAUTION
■When starting the engine
Always start the engine while sitting in the driver’s seat. Do not depress the acceler-
ator pedal while starting the engine under any circumstances.
Doing so may cause an accident resulting in death or serious injury.
■Caution while driving
If the vehicle begins to slide due to engine failure or other circumstances, do not
lock or open the doors until the vehicle reaches a safe and complete stop. Activa-
tion of the steering lock in this circumstance may lead to an accident, resulting in
death or serious injury.
■Stopping the engine in an emergency
If you want to stop the engine in an emergency while driving the vehicle, press and
hold the “ENGINE START STOP” switch for more than 3 seconds. However, do
not touch the “ENGINE START STOP” switch while driving except in an emer-
gency. Turning the engine off while driving will not cause loss of steering or braking
control, but the power assist to these systems will be lost. This will make it more diffi-
cult to steer and brake, so you should pull over and stop the vehicle as soon as it is
safe to do so.

185
2-1. Driving procedures
2
When driving
GX460_U.S.A. (OM60J00U)
NOTICE
■To prevent battery discharge
●Do not leave the “ENGINE START STOP” switch in ACCESSORY or IGNI-
TION ON mode for long periods of time without the engine running.
●If the indicator on the “ENGINE START STOP” switch is illuminated, the
“ENGINE START STOP” switch is not off. When exiting the vehicle, always
check that the “ENGINE START STOP” switch is off.
●Do not stop the engine when the shift lever is in a position other than P. If the
engine is stopped in another shift lever position, the “ENGINE START STOP”
switch will not be turned off but instead be turned to ACCESSORY mode. If the
vehicle is left in ACCESSORY mode, battery discharge may occur.
■When starting the engine
●Do not race a cold engine.
●If the engine becomes difficult to start or stalls frequently, have the engine
checked immediately.
■Symptoms indicating a malfunction with the “ENGINE START STOP” switch
If the “ENGINE START STOP” seems to be operating somewhat differently than
usual, such as the switch sticking slightly, there may be a malfunction. Contact your
Lexus dealer immediately.

186
2-1. Driving procedures
GX460_U.S.A. (OM60J00U)
Automatic transmission
Select a shift position appropriate for the driving conditions.
■Shifting the shift lever
While the “ENGINE START STOP” switch is in IGNITION
ON mode, move the shift lever with the brake pedal depressed.
When shifting the shift lever between P and D, make sure that
the vehicle is completely stopped.

192
2-1. Driving procedures
GX460_U.S.A. (OM60J00U)
Turn signal lever
■Turn signals can be operated when
The “ENGINE START STOP” switch is in IGNITION ON mode.
■If the indicators flash faster than usual
Check that a light bulb in the front or rear turn signal lights has not burned out.
The turn signal lever can be used to show the following intentions of the
driver:Right turn
Left turn
Lane change to the right
(push and hold the lever part-
way)
The right hand signals will flash
until you release the lever.
Lane change to the left (push
and hold the lever partway)
The left hand signals will flash
until you release the lever.

197
2-2. Instrument cluster
2
When driving
GX460_U.S.A. (OM60J00U)
■The meters and display illuminate when
The “ENGINE START STOP” switch is in IGNITION ON mode.
■Instrument cluster brightness adjustment
The instrument cluster brightness levels when the tail lights are on and off can be
adjusted.
■The brightness of the instrument cluster lights
When the tail lights are on, the brightness will change. However, when the sur-
roundings are bright (daytime, etc.) turning on the tail lights will not change the
instrument cluster brightness.
In addition, the brightness of the instrument cluster lights is automatically adjusted
based on the light sensor detecting how bright the surroundings are.
■When disconnecting and reconnecting battery terminals
The trip meter data will be reset.
If the trip meter was displayed last, the ODO screen will be displayed after reset-
ting.
■Customization
Setting of sensitivity of the ambient light sensor used for dimming the meter lights
can be changed. (Customizable features →P. 7 8 2 )
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indi-
cates the maximum engine speed.
●The engine may be overheating if the engine coolant temperature gauge is in the
red zone (H). In this case, immediately stop the vehicle in a safe place, and check
the engine after it has cooled completely. ( →P. 74 4 )

201
2-2. Instrument cluster
2
When driving
GX460_U.S.A. (OM60J00U)
*1: These lights turn on when the “ENGINE START STOP” switch is turnedto IGNITION ON mode to indicate that a system check is being per-
formed. They will turn off after the engine is on, or after a few seconds.
There may be a malfunction in a system if the lights do not come on, or
turn off. Have the vehicle inspected by your Lexus dealer.
*2: The light flashes to indicate that the system is operating.
*3: The light comes on when pre-collision braking is disabled. The lightflashes faster than usual to indica te that the system is operating.
(if equipped)
Crawl Control indicator
(→ P. 3 2 8 )AIR BAG ON/OFF
indicator ( →P. 1 3 9 )
(if equipped)
Downhill assist control
system indicator
(→ P. 3 3 2 )
(if equipped)
Intuitive parking assist
indicator ( →P. 266)
“2nd STRT” indicator
(→ P. 1 8 8 )
(if equipped)
“AFS OFF” indicator
(→ P. 223)
Low speed four-wheel
drive indicator light
(→ P. 322)“RSCA OFF” indicator
(→ P. 1 3 7 )
Center differential lock
indicator ( →P. 3 2 3 )
(if equipped)
“PCS” warning
(→ P. 3 4 3 )
*1
*1
*1
*1
*1, 3