warning light Lexus GX460 2013 Specifications /

348
2-4. Using other driving systems
GX460_OM_OM60J63U_(U)
Disabling pre-collision brakingPre-collision braking disabled
Pre-collision braking enabled
The “PCS” warning light turns on
when pre-
collision braking is dis-
abled.
■ AVS (Adaptive Variable Suspension System) control (if equipped)
When the system determines that ther e is a high possibility of a fron-
tal collision, the AVS optimizes the damping effect ( P. 325)
■ Driver monitor system (if equipped)
When the system determines that there is a possibility of a frontal
collision, and the driver is not f acing forward, PCS warnings are
given in advance to warn the driver . If the driver continues to be not
facing forward, and a high possibilit y of a frontal collision is detected,
PCS informs the driver of high po ssibility of a frontal collision by
performing slight braking to provid e a physically warning (pre-colli-
sion alert braking). ( P. 3 4 9 )

352
2-4. Using other driving systems
GX460_OM_OM60J63U_(U)
■Situations in which the pre-collision system does not function properly
The system may not function effectively in situations such as the following:
●On roads with sharp bends or uneven surfaces
●If a vehicle suddenly moves in front of your vehicle, such as at an intersection
●If a vehicle suddenly cuts in front of your vehicle, such as when overtaking
●In inclement weather such as heav y rain, fog, snow or sand storms
●When your vehicle is skidding with the VSC system off
●When an extreme change in vehicle height occurs
●When the axis of the radar is out of adjustment
■Automatic cancelation of the pre-collision system
When a malfunction occurs due to sensor contaminations, etc. that results in the
sensors being unable to detect obstacles, the pre-collision system will be automati-
cally disabled. In this case, the system will not activate even if there is a collision pos-
sibility.
■Obstacles not detected
The system cannot detect plastic obstacles such as pylons. There may also be occa-
sions when the system cannot detect pede strians, animals, bicycles, motorcycles,
trees, or snowdrifts.
■When there is a malfunction in the system
Warning lights and/or warning mess ages will turn on or flash. (P. 693, 705)

638
4-3. Do-it-yourself maintenance
GX460_OM_OM60J63U_(U)
■When to replace your vehicle’s tires
Tires should be replaced if:
●You have tire damage such as cuts, splits, cracks deep enough to expose the
fabric or bulges indicating internal damage
●A tire goes flat repeatedly or cannot be properly repaired due to the size or
location of a cut or other damage
If you are not sure, consult with your Lexus dealer.
■Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not registered,
the tire pressure warning system will not work properly. After driving for about 20
minutes, the tire pressure warning light come s on after blinking for 1 minute to indi-
cate a system malfunction.
■Tire life
Any tire over 6 years old must be checked by a qualified technician even if they
have seldom or never been used or damage is not obvious.
■If the tread on snow tires wears down below 0.16 in. (4 mm) on snow tires
The effectiveness of the tire as snow tires is lost.
■Maximum load of tire
Check that the number given by dividing the maximum load by 1.10 of the replace-
ment tire is greater than 1 /2 of the Gr oss Axle Weight Ratings (GAWR) of either
the front axle or the rear axle, whichever is greater.
For the GAWR, see the Certification Label.
For the maximum load of the tire, see the load
limit at maximum cold tire inflation pressure
mentioned on the sidewall of the tire.
(  P. 7 74 )

When trouble arises5
683
GX460_OM_OM60J63U_(U)
5-1. Essential informationEmergency flashers............... 684
If your vehicle needs to be towed ............................ 685
If you think something is wrong ....................................... 691
Fuel pump shut off system.... 692 5-2. Steps to take in an
emergency
If a warning light turns on or a warning buzzer
sounds..................................... 693
If a warning message is displayed................................ 705
If you have a flat tire................ 726
If the engine will not start ..... 740
If the shift lever cannot be shifted from P ........................ 742
If you lose your keys ............... 743
If the electronic key does not operate properly........... 744
If the vehicle battery is discharged ............................. 746
If your vehicle overheats ...... 749
If the vehicle becomes stuck........................................ 752
If your vehicle has to be stopped in an
emergency ............................ 754

5
When trouble arises
693
GX460_OM_OM60J63U_(U)
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer sounds...
Stop the vehicle immediately. Continuing to drive the vehicle may be
dangerous.
The following warning in dicates a possible problem in the brake system.
Immediately stop the vehi cle in a safe place and contact your Lexus
dealer.
*: Parking brake engaged warning buzzer: A buzzer will sound if the vehicle is driv en at a speed of approximately 3 mph (5
km/h) or more.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Brake system warning light (warning buzzer)*
•Low brake fluid
• Malfunction in the brake system
This light also comes on when the parking brake is not
released. If the light turns off after the parking brake is fully
released, the system is operating normally.
Calmly perform the following actions if any of the warning lights turn on or
flash. If a light turns on or flashes, bu t then turns off, this does not necessar-
ily indicate a malfunction in the system.

694
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
Stop the vehicle immediately.The following warning indicates the po ssibility of damage to the vehicle
that may lead to an ac cident. Immediately stop the vehicle in a safe place
and contact your Lexus dealer.
Have the vehicle inspected by y our Lexus dealer immediately.
Failing to investigate the cause of the following warnings may lead to the
system operating abnormally and possibly cause an accident. Have the
vehicle inspected by your Lexus dealer immediately.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
while the engine is running.
Warning lightWarning light/Details
(U.S.A.)

(Canada)
Malfunction indicator lampMalfunction in:
• The emission control system;
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system.

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 )

696
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
*: If equipped
Warning lightWarning light/Details
(Flashing)
“AFS OFF” indicator light*
Indicates a malfunction in the AFS (Adaptive Front-lighting
System). (P. 2 2 7 )
(Flashing)
Automatic High Beam indicator light*
Indicates a malfunction in the automatic high beam system.
( P. 2 3 0 )
(Flashing)
“LDA” indicator light*
Indicates a malfunction in the lane departure alert.
(P. 2 7 9 )
(Flashing)
Cruise control indicator light*
Indicates a malfunction in the cruise control system.
(P. 250, 254)
(Flashing)
Radar cruise control indicator light*
Indicates a malfunction in the Dynamic radar cruise control
system. ( P. 2 5 4 )
Kinetic dynamic suspension system warning light
Malfunction in the kinetic dynamic suspension system.
(Flashing)
Multi-terrain Select indicator light*
Indicates a malfunction in the Multi-terrain Select system.
( P. 3 0 0 )
Low speed four-wheel drive indicator light
Indicates a malfunction in the four-wheel drive system if the
light continues flashing. ( P. 3 2 6 )
Center differential lock indicator light
Indicates a malfunction in the four-wheel drive system if the
light continues flashing. ( P. 3 2 6 )

5
When trouble arises
697
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
Have the malfunction repaired immediately.After taking the specified steps to co rrect the suspected problem, check
that the warning light turns off.
Warning lightWarning light/DetailsCorrection procedure
Open door warning light
(warning buzzer)
*1
A door or a back door is not
fully closed.
Check that all doors and the
back door are closed.
Low fuel level warning light
Remaining fuel
(Approximately 3.4 gal. [13.0
L, 2.8 Imp.gal.] or less)
Refuel the vehicle.
(On the instru-
ment panel)
Driver’s seat belt reminder
light (warning buzzer)
*2
Warns the driver to fasten
his/her seat belt.Fasten the seat belt.
(On the center panel)
Front passenger’s seat belt
reminder light (warning
buzzer)
*2
Warns the front passenger to
fasten his/her seat belt.
Fasten the seat belt.

698
5-2. Steps to take in an emergency
GX460_OM_OM60J63U_(U)
*1: Open door warning buzzer:
The open door warning buzzer sounds to alert one or more of the doors is not
fully closed (with the vehicle having reached a speed of 3 mph [5 km/h]).
( P. 7 0 9 )
*2: Driver’s and front passenger’s seat belt reminder buzzer:
The driver’s and front passenger’s seat belts reminder buzzer sounds to alert
the driver and front passenger that his/he r seat belt is not fastened. Once the
“ENGINE START STOP” switch is turned to IGNITION ON mode, the buzzer
sounds for 4 to 8 seconds. If the vehi cle reaches a speed of 12 mph (20 km/h),
the buzzer sounds intermittently for 10 seconds. Then, if the seat belt is still
unfastened, the buzzer will sound in a different tone for 20 more seconds.
Warning lightWarning light/DetailsCorrection procedure
Master warning light
A buzzer sounds and the
warning light comes on and
flashes to indicate that the
master warning system has
detected a malfunction.
 P. 7 0 5
Tire pressure warning light
When the light comes on:
Low tire inflation pressure.Adjust the tire inflation pres-
sure.
When the light comes on after
blinking for 1 minute:
Malfunction in the tire pres-
sure warning system.
Have the system checked by
your Lexus dealer.