warning Lexus GX460 2012 Owner's Guide

331
2-4. Using other driving systems
2
When driving
GX460_U.S.A. (OM60J00U)
■If the automatic transmission system overheats
The system will cease operation, a buzzer will sound and a warning message will be
displayed to alert the driver. Stop the vehicle in a safe place until the warning mes-
sage turns off. (→P. 700)
■Sounds and vibrations caused by the Crawl Control system
●A sound may be heard from the engine compartment when the engine is
started or just after the vehicle begins to move. This sound does not indicate that
a malfunction has occurred in Crawl Control system.
●Either of the following conditions may occur when the Crawl Control system is
operating. None of these are indicators that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
■If the slip indicator comes on...
It may indicate a malfunction in the system. Consult your Lexus dealer.
CAUTION
■When using Crawl Control
Do not rely solely on the Crawl Control. This function does not extend the vehicle’s
performance limitations. Always thoroughly check the road conditions, and drive
safely.
■These conditions may cause the system not to operate properly
When driving on the following surfaces, the system may not be able to maintain a
fixed low speed, which may result in an accident:
●Extremely steep inclines.
●Extremely uneven surfaces.
●Snow-covered roads, or other slippery surfaces.

341
2-4. Using other driving systems
2
When driving
GX460_U.S.A. (OM60J00U)
CAUTION
■TRAC/Active TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slippery road
surfaces, even if the TRAC/Active TRAC is operating.
Do not drive the vehicle in conditions where stability and power may be lost.
■Hill- start assist control does not operate effectively when
Do not overly rely on the hill-start assist control. The hill-start assist control may not
operate effectively on steep inclines and roads covered with ice.
■When the VSC is activated
The slip indicator light flashes and a warning buzzer sounds. Always drive carefully.
Reckless driving may cause an accident. Exercise particular care when the indica-
tor light flashes and a buzzer sounds.
■When the TRAC or Active TRAC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road conditions. As
these are the systems to ensure vehicle stability and driving force, do not turn the
TRAC or Active TRAC/VSC systems off unless necessary.
■Replacing tires
Make sure that all tires are of the same size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire
inflation pressure level.
The ABS/Multi Terrain ABS and VSC systems will not function correctly if different
tires are installed on the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.

343
2-4. Using other driving systems
2
When driving
GX460_U.S.A. (OM60J00U)
PCS (Pre-Collision System)∗
∗: If equipped
When the radar sensor detects that a frontal collision is highly likely or
even unavoidable, safety systems such as the brakes and seat belts are
automatically engaged to lessen impact and injuries to occupants as well as
vehicle damage.
■ Pre-collision seat belts (front seat belts only)
If the system detects that a collision is unavoidable, the system will
retract the seat belt before the collision occurs.
The same will happen if the driver makes an emergency braking or
loses control of the vehicle. ( →P. 8 7 )
However, when the VSC system is disabled, the system will not
operate in the event of skidding.
■ Pre-collision brake assist
When there is a high possibility of a frontal collision, the system
applies greater braking force in relation to how strongly the brake
pedal is depressed.
■ Pre-collision braking
When there is a high possibility of a frontal collision, the system
warns the driver using a warning light, warning display and buzzer. If
the system determines that a collision is unavoidable, the brakes are
automatically applied to reduce the collision speed. Pre-collision
braking can be disabled using the pre-collision braking off switch.

344
2-4. Using other driving systems
GX460_U.S.A. (OM60J00U)
Disabling pre-collision brakingPre-collision braking disabled
Pre-collision braking enabled
The “PCS” warning light comes on
when pre-
collision braking is dis-
abled.
■ AVS (Adaptive Variable Suspensi on System) control (if equipped)
When the system determines that there is a high possibility of a colli-
sion, the AVS optimizes the damping effect ( →P. 321)
■ Driver monitor sys tem (if equipped)
When the system determines that there is a possibility of a collision,
and the driver is not facing forward, PCS warnings are given in
advance to warn the driver. If the driver continues to be not facing
forward, and a probable collision is detected, PCS informs the
driver of danger by performing slight braking to provide a physically
warning (pre-collision alert braking). ( →P. 345)

346
2-4. Using other driving systems
GX460_U.S.A. (OM60J00U)
■The pre-collision system is operational when
●Pre-collision warning
• Vehicle speed is greater than about 10 mph (15 km/h).
• The speed at which your vehicle is approaching the obstacle or oncomingvehicle is greater than about 10 mph (15 km/h).
●Pre-collision seat belts (linked to the radar sensor):
• Vehicle speed is greater than about 4 mph (5 km/h).
• The speed at which your vehicle is approaching the obstacle or oncoming
vehicle is greater than about 19 mph (30 km/h).
• The front occupants are wearing a seat belt.
●Pre-collision seat belts (linked to brake operation):
• Vehicle speed greater than about 19 mph (30 km/h).
• The system detects sudden braking or skidding.
• The front occupants are wearing a seat belt.
●Pre-collision brake assist:
• Vehicle speed is greater than about 19 mph (30 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle running ahead of you is greater than about 19 mph (30 km/h).
• The brake pedal is depressed.
●Pre-collision braking:
• The pre-collision braking off switch is not pressed.
• Vehicle speed is greater than about 10 mph (15 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle
running ahead of you is greater than about 10 mph (15 km/h).
●AVS (Adaptive Variable Suspension System) control (if equipped):
• Vehicle speed is greater than about 4 mph (5 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehiclerunning ahead of you is greater than about 19 mph (30 km/h).

348
2-4. Using other driving systems
GX460_U.S.A. (OM60J00U)
■Obstacles not detected
The system cannot detect plastic obstacles such as pylons. There may also be occa-
sions when the system cannot detect pedestrians, animals, bicycles, motorcycles,
trees, or snowdrifts.
■When there is a malfunction in the system
Warning lights and/or warning messages will turn on or flash. (→P. 688, 700)
■Certification
For vehicles sold in the U.S.A.
FCC ID: HYQDNMWR004
This device complies with Part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) this device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Radio frequency radiation exposure Information:
This equipment complies with FCC radiation exposure limits set forth for an uncon-
trolled environment.
This equipment should be installed and operated with minimum distance of 20 cm
between the radiator (antenna) and your body.
This transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
For vehicles sold in Canada
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.

369
2-5. Driving information
2
When driving
GX460_U.S.A. (OM60J00U)
CAUTION
■Driving with tire chains
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in the vehicle being unable to be driven safely, and may
cause death or serious injury.
●Do not drive in excess of the speed limit specified for the tire chains being used,
or 30 mph (50 km/h), whichever is lower.
●Avoid driving on bumpy road surfaces or over potholes.
●Avoid sudden turns and braking, as use of chains may adversely affect vehicle
handling.
●Slow down sufficiently before entering a curve to ensure that vehicle control is
maintained.
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow tires from Lexus dealers or legitimate tire
retailers.
This is because the removal and attachment of snow tires affects the operation of
the tire pressure warning valves and transmitters.
■Fitting tire chains
The tire pressure warning valves and transmitters may not function correctly when
tire chains are fitted.

414
3-2. Using the audio system
GX460_U.S.A. (OM60J00U)
■Using cellular phones
Interference may be heard through the audio system’s speakers if a cellular phone is
being used inside or close to the vehicle while the audio system is operating.
CAUTION
■Certification
●Pa r t 1 5 o f t h e F CC R u l e s
FCC Warning:
Any unauthorized changes or modifications to this equipment will void the user’s
authority to operate this device.
●Laser products
• Do not take this unit apart or attempt to make any changes by yourself. This is an intricate unit that uses a laser pickup to retrieve information from the
surface of compact discs. The laser is carefully shielded so that its rays remain
inside the cabinet. Therefore, never try to disassemble the player or alter any
of its parts since you may be exposed to laser rays and dangerous voltages.
• This product utilizes a laser. Use of controls or adjustments or performance of procedures other than
those specified herein may result in hazardous radiation exposure.
NOTICE
■To prevent battery discharge
Do not leave the audio system on longer than necessary with the engine off.
■To avoid damaging the audio system
Take care not to spill drinks or other fluids over the audio system.

467
3-3. Using the Bluetooth® audio system
3
Interior features
GX460_U.S.A. (OM60J00U)
CAUTION
■FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Radio Frequency Radiation Exposure. This equipment complies with FCC radiation
exposure limits set forth for uncontrolled equipment and meets the FCC radio fre-
quency (RF) Exposure Guidelines in Supplement C to OET65. This equipment has
very low levels of RF energy that it deemed to comply without maximum permissive
exposure evaluation (MPE). But it is desirable that it should be installed and oper-
ated with at least 7.9 in. (20 cm) and more between the radiator and person’s body
(excluding extremities: hands, wrists, feet and legs).
This transmitter must not be co-located or operated in conjunction with any other
antenna or transmitter.
■Caution while driving
Do not connect portable players or operate the controls.
NOTICE
■To prevent damage to portable players
Do not leave portable players in the vehicle. The temperature inside the vehicle
may become high, resulting in damage to the player.

488
3-4. Using the hands-free system (for cellular phone)
GX460_U.S.A. (OM60J00U)
CAUTION
■FCC WARNING
Changes or modifications not expressly approved by the party responsible for
compliance could void the user’s authority to operate the equipment.
Radio Frequency Radiation Exposure. This equipment complies with FCC radiation
exposure limits set forth for uncontrolled equipment and meets the FCC radio fre-
quency (RF) Exposure Guidelines in Supplement C to OET65. This equipment has
very low levels of RF energy that it deemed to comply without maximum permissive
exposure evaluation (MPE). But it is desirable that it should be installed and oper-
ated with at least 7.9 in. (20 cm) and more between the radiator and person’s body
(excluding extremities: hands, wrists, feet and legs).
This transmitter must not be co-located or operated in conjunction with any other
antenna or transmitter.
■Caution while driving
Do not use a cellular phone or connect the Bluetooth
® phone.
NOTICE
■To prevent damage to cellular phones
Do not leave cellular phones in the vehicle. The temperature inside the vehicle may
become high, resulting in damage to the phone.