2013 Lexus GX460 brake

5
When trouble arises
695
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
Warning lightWarning light/Details
SRS warning lightMalfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system.
(U.S.A.)

(Canada)
ABS warning lightMalfunction in:
•The ABS; or
• The brake assist system.
Slip indicator light
Malfunction in:
• The VSC;
• The active traction control system;
The indicator will blink when the system listed above or
below is operational. ( P. 3 4 1 )
• The downhill assist control system
*;
• The hill-start assist control system
*; or
• Crawl Control system*.
(Flashing)
“PCS” warning light*
Indicates a malfunction in the pre-collision system.
The warning light will operate as follows, even when the sys-
tem is not malfunctioning:
• The light will flash quickly wh en the system is operating.
( P. 3 4 7 )
• The light will turn on when the pre-collision braking is dis- abled. ( P. 3 4 8 )
• The light will turn on when the system cannot temporarily
be used. ( P. 7 1 2 )

702
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The
vehicle will become extremely unstable during braking, and the ABS system may
fail, which could cause an accident resulting in death or serious injury.
■When the power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and
operate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pres-
sure immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat ti re. Check the tires. If the tire is flat,
change to the spare tire and have the flat tire repaired by the nearest Lexus
dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could
lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

710
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
*: The graphic is shown on the Rear height control air suspension display.
Indicates that the glass
hatch is not fully closed
*
If the vehicle reaches a
speed of 3 mph
(5 km/h),
flashes and a buzzer
sounds to indicate that
the glass hatch is not yet
fully closed.
Close the glass hatch.
(Flashes)
(If equipped)
Indicates that the moon
roof is not fully closed
(with the “ENGINE
START STOP” switch off,
and the driver’s door
open)
Close the moon roof.
Indicates that the parking
brake is still engaged If the vehicle reaches a
speed of 3 mph
(5 km/h),
flashes and a buzzer
sounds to indicate that
the parking brake is still
engaged.
Release the parking
brake.
Wa r n i n g m e s s a g eDetailsCorrection procedure

5
When trouble arises
713
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
(Flashes)
(If equipped)
Indicates that the radar
cruise control system is
unable to judge vehicle-
to-vehicle distance A buzzer also sounds.If the windshield wipers
are on, turn them off or set
them to a mode other than
“A U T O ” o r h i g h s p e e d
wiper operation.
(Flashes)
(If equipped)
Indicates that your vehi-
cle is nearing the vehicle
ahead (in radar cruise
mode)
A buzzer also sounds.
Slow the vehicle by apply-
ing the brakes.
Wa r n i n g m e s s a g eDetailsCorrection procedure

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5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
(Flashes)
(If equipped)
Indicates that there is a
high possibility of a fron-
tal collision, or that the
pre-collision braking
function is operating A buzzer also sounds.
Slow the vehicle by apply-
ing the brakes.
(If equipped)
Indicates that the LDA is
suspendedThe camera sensor tem-
perature is higher than
the operation tempera-
ture range.
Reactivate the lane depar-
ture alert system.
(If equipped)
Alerts the driver that the
vehicle may deviate from
its lane (while the LDA
system is operating).
The lane markings flash.
Check the road condi-
tions and correct the driv-
ing path appropriately.
Wa r n i n g m e s s a g eDetailsCorrection procedure

720
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
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

5
When trouble arises
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5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
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. 744),
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 buzzerWa r n i n g m e s s a g eDetailsCorrection
procedure

724
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
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