2012 Lexus GX460 stop start

5
When trouble arises
715
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
Sounds
once
(Flashes)
• When the doors were unlocked
with the
mechanical key
and then the
“ENGINE
START STOP”
switch was
pressed, the
electronic key
could not be
detected in the
vehicle.
• The electronic
key could not be
detected in the
vehicle even
after the
“ENGINE
START STOP”
switch was
pressed two
consecutive
times.
Touch the elec-
tronic key to the
“ENGINE START
STOP” switch
while depressing
the brake pedal.
InteriorbuzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

716
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
Sounds
once
(Flashes)
An attempt was
made to start the
engine with the
shift lever in an
incorrect position.
Shift the shift lever
to P and start the
engine.
Sounds
once
(Flashes)
An attempt was
made to turn the
“ENGINE START
STOP” switch off
when the shift
lever was not in P.To turn off the
engine, first shift
the shift lever to P
and then turn the
“ENGINE START
STOP” switch off.
InteriorbuzzerExterior buzzerWarning messageDetailsCorrection
procedure

718
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
Sounds
once
(Flashes)
The driver’s door
was opened and
closed with the
“ENGINE START
STOP” switch
turned off and
then the
“ENGINE START
STOP” switch was
put in ACCES-
SORY mode
twice without the
engine being
started.
Press the
“ENGINE START
STOP” switch
while depressing
the brake pedal.
During an engine
starting proce-
dure in the event
that the elec-
tronic key was not
functioning prop-
erly (→P. 7 3 9 ) ,
the “ENGINE
START STOP”
switch was
touched with the
electronic key.
Press the
“ENGINE START
STOP” switch
within 10 seconds
of the buzzer
sounding.
Interior
buzzerExterior buzzerWarning messageDetailsCorrection
procedure

5
When trouble arises
719
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
Sounds
once
(Flashes)
The steering lock
could not be
released within 3
seconds of the
“ENGINE START
STOP” switch
being pressed.
Press the
“ENGINE START
STOP” switch
while depressing
the brake pedal
and moving the
steering wheel left
and right.
InteriorbuzzerExterior buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

732
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
CAUTION
■Using the tire jack
Improper use of the tire jack may lead to death or injuries due to the vehicle sud-
denly falling off the jack.
●Do not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
●Only use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do not use other tire jacks for replacing tires
on this vehicle.
●Always check that the tire jack is securely set to the jack point.
●Be sure to turn off the rear height control air suspension and stop the engine.
●Do not raise the vehicle while someone is in it.
●When raising the vehicle, do not put an object on or under the jack.
●Do not raise the vehicle to a height greater than that required to replace the tire.
●Use a jack stand if it is necessary to get under the vehicle.
●Do not put any part of your body under the vehicle supported by a jack.
●Do not start or run the engine while your vehicle is supported by the jack.
Take particular care when lowering the vehicle to ensure that no one working on or
near the vehicle may be injured.
■Using the jack handle
Tighten all the jack handle bolts securely using a Phillips-head screwdriver, to pre-
vent the extension parts from coming apart unexpectedly.

736
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
Emergency start function
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the “ENGINE START STOP” switch
is functioning normally:Set the parking brake.
Shift the shift lever to P.
Turn the “ENGINE START STOP” switch to ACCESSORY
mode.
Press and hold the “ENGINE START STOP” switch for about 15
seconds while depressing the brake pedal firmly.
Even if the engine can be started using the above steps, the system may
be malfunctioning. Have the vehicle inspected by your Lexus dealer.
■ The starter motor does not turn ov er, interior lights and headlights
do not turn on, or the horn does not sound
One of the following may be the cause of the problem:
● One or both of the battery terminals may be disconnected.
● The battery may be discharged. ( →P. 74 1 )
● There may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP2
STEP3
STEP4

5
When trouble arises
737
5-2. Steps to take in an emergency
GX460_U.S.A. (OM60J00U)
If the shift lever cannot be shifted from P
If the shift lever cannot be shifted with your foot on the brake, there may be
a problem with the shift lock system (a system to prevent accidental opera-
tion of the shift lever). Have the vehicle inspected by your Lexus dealer
immediately.
The following steps may be used as an emergency measure to ensure that
the shift lever can be shifted:
Set the parking brake.
Turn the “ENGINE START STOP” switch to ACCESSORY
mode.
Depress the brake pedal.
Pry the cover up with a flathead
screwdriver or tool.
Press the shift lock override but-
ton.
The shift lever can be shifted
while the button is pressed.
STEP1
STEP2
STEP3
STEP4
STEP5

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