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3614-5. Using the driving support systems
4
Driving
LS460/LS460L_GE (OM50G06E)
◆VGRS (Variable Gear Ratio Steering) (if equipped)
Adjusts the wheel turning angle in accordance with the vehicle speed
and steering wheel movement
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to
turn the steering wheel
◆VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the ABS, brake assist, TRC, VSC, hill-
start assist control, EPS and VGRS (if equipped) systems
Helps to maintain vehicle stability when swerving on slippery road sur-
faces by controlling the brakes, engine output, steering assist, and if
equipped with VGRS, steering ratio
◆PCS (Pre-Crash Safety system) (if equipped)
P. 368
◆Emergency brake signal (if equipped)
When the brakes are applied suddenly, the stop lights automatically
flash to alert the vehicle behind
◆BSM (Blind Spot Monitor) (if equipped)
P. 381
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3624-5. Using the driving support systems
LS460/LS460L_GE (OM50G06E)
The slip indicator light will flash
while the TRC/VSC/ABS/hill-start
assist control systems are operating.
The stop lights and high mounted
stoplight turn on when the hill-start
assist control system is operating.
If the vehicle gets stuck in fresh snow or mud, the TRC and VSC systems
may reduce power from the engine to the wheels. Pressing VSC OFF
switch to turn the system off may make it easier for you to rock the vehicle
in order to free it.
■Turning off the TRC system only
To turn the TRC system off,
quickly press and release the
switch.
The “TRC OFF” will be shown on
the multi-information display. Press
the switch again to turn the system
back on.
When the TRC/VSC/ABS/hill-start assist control systems are
operating
Disabling the TRC/VSC systems
Type B
Type A
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3644-5. Using the driving support systems
LS460/LS460L_GE (OM50G06E)
■When the message is displayed on the multi-information display showing that TRC
has been disabled even if the VSC OFF switch has not been pressed
TRC and hill-start assist control cannot be operated. Contact your Lexus dealer.
■Hill-start assist control is operational when
●The system has detected that the vehicle is moving backward.
●Vehicles without paddle shift switches: The shift lever is in the D or S position.
Vehicles with paddle shift switches: The shift lever is in the D or M position.
●The brake pedal is not depressed.
■VGRS is disabled when
VGRS may stop operating in the following situations.
In this event, the steering wheel may move from its straight forward position, but it
will return when the system restarts.
●When the steering wheel is operated for an extended period of time while the vehi-
cle is stopped or is moving very slowly
●When the steering wheel has been held fully to the left or right
●When the battery is low or the voltage temporarily drops
The center position of the steering wheel may change when VGRS is disabled. How-
ever, the position will return to normal after VGRS is reactivated.
■Sounds and vibrations caused by the ABS, brake assist, TRC, VSC, hill-start assist
control and VGRS systems
●A sound may be heard from the engine compartment when the brake pedal is
depressed repeatedly, when the engine is started or just after the vehicle begins to
move. This sound does not indicate that a malfunction has occurred in any of these
systems.
●Any of the following conditions may occur when the above systems are operating.
None of these indicates 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.
●The steering wheel may be moved slightly or a sound may be heard when the
engine is started or stopped. None of these indicate that a malfunction has
occurred.
■EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
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3654-5. Using the driving support systems
4
Driving
LS460/LS460L_GE (OM50G06E)
■Reactivation of the TRC/VSC systems
Even after the TRC/VSC systems have been turned off, turning the engine off and
then on again will automatically reactivate the TRC/VSC systems.
■Reactivation of the TRC system linked to vehicle speed
When only the TRC system is turned off, the TRC system will turn on when vehicle
speed increases. However, when both TRC and VSC systems are turned off, the sys-
tems will not turn on even when vehicle speed increases.
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from overheat-
ing when there is frequent steering input over an extended period of time. The steer-
ing wheel may feel heavy as a result.* Should this occur, refrain from excessive
steering input or stop the vehicle and turn the engine off. The EPS system should
return to normal within 10 minutes.
*: If the LKA (Lane-Keeping Assist) system cannot operate in this case, a warning
message will be shown on the multi-information display.
■Operating conditions of emergency brake signal
When the following three conditions are met, the emergency brake signal will oper-
ate:
●The emergency flashers are off.
●Actual vehicle speed is over 55 km/h (35 mph).
●The brake pedal is depressed in a manner that cause the system to judge from the
vehicle deceleration that this is a sudden braking operation.
■Automatic system cancelation of emergency brake signal (if equipped)
The emergency brake signal will turn o ff in any of the following situations:
●The emergency flashers are turned on.
●The brake pedal is released.
●The system judges from the vehicle deceleration that is not a sudden braking oper-
ation.
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3924-5. Using the driving support systems
LS460/LS460L_GE (OM50G06E)
■Conditions under which the RCTA function will not detect a vehicle
The RCTA function is not designed to detect the following types of vehicles and/or
objects.
●Small motorcycles, bicycles, pedestrians etc.*
●Vehicles approaching from directly behind
●Guardrails, walls, signs, parked vehicles and similar stationary objects*
●Vehicles moving away from your vehicle
●Vehicles approaching from the parking spaces next to your vehicle*
●Vehicles backing up in the parking space next to your vehicle
*: Depending on conditions, detection of a vehicle and/or object may occur.
■Conditions under which the RCTA function may not function correctly
The RCTA function may not detect vehicles correctly in the following conditions:
●During bad weather such as heavy rain, fog, snow etc.
●When ice or mud etc. is attached to the rear bumper
●When multiple vehicles approach continuously
●Shallow angle parking
●When a vehicle is approaching at high speed
●When parking on a steep incline, such as hills, a dip in the road etc.
●Directly after the BSM main switch is set to on
●Directly after the engine is started with the BSM main switch on
●Vehicles that the sensors cannot detect
because of obstacles
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3934-5. Using the driving support systems
4
Driving
LS460/LS460L_GE (OM50G06E)
Turn the engine switch to IGNITION ON mode.
Turn the headlights on.
Press the Lexus night view switch.
The Lexus night view is displayed on
the Remote Touch screen.
To return the screen to its previous
state, press the switch again.
When the light sensor ( P. 288)
determines that it is currently night
time from the brightness of the sur-
rounding area, the Lexus night view
can be operated by pressing the
Lexus night view switch while the
headlights are on.
Lexus night view
: If equipped
Lexus night view is a system which assists with nighttime driving.
Near-infrared rays are irradiated forward and an image converted
from the irradiated light is show n on the Remote Touch screen. The
image shows pedestrians, obstacles, and road conditions ahead of the
vehicle, which are difficult to see at nighttime with the naked eye.
Displaying the Lexus night view
1
2
3
Page 399 of 708
399
4
Driving
LS460/LS460L_GE (OM50G06E)
4-6. Driving tips
●Use fluids that are appropriate to the prevailing outside temperatures.
•Engine oil
• Engine coolant
•Washer fluid
●Have a service technician inspect the condition of the battery.
●Have the vehicle fitted with four snow tires or purchase a set of tire
chains for the rear tires.
Ensure that all tires are the specified size and brand, and that chains match the
size of the tires.
Winter driving tips
Carry out the necessary preparations and inspections before driving
the vehicle in winter. Always drive the vehicle in a manner appropriate
to the prevailing weather conditions.
Preparation for winter
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4024-6. Driving tips
LS460/LS460L_GE (OM50G06E)
CAUTION
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in a loss of vehicle control and cause death or serious
injury.
●Use tires of the specified size.
●Maintain the recommended level of air pressure.
●Do not drive at speeds in excess of the speed limit or the speed limit specified for
the snow tires being used.
●Use snow tires on all, not just some wheels.
■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 50 km/h (30 mph), whichever is lower.
●Avoid driving on bumpy road surfaces or over potholes.
●Avoid sudden acceleration, abrupt steering, sudden braking and shifting opera-
tions that cause sudden engine braking.
●Slow down sufficiently before entering a curve to ensure that vehicle control is
maintained.
●Do not use LKA (Lane-Keeping Assist) system. (if equipped)
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow ti res 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.