Lexus LX570 (2021 year). Manual in english - page 23

Driving assist systems

◆

Multi Terrain ABS (Anti-lock Brake System)

Helps to prevent wheel lock when the brakes are applied suddenly, or if the brakes are

applied while driving on a slippery road surface, or in off-road conditions (such as

rough roads, sand and mud)

◆

Brake assist

Generates an increased level of braking force after the brake pedal is depressed

when the system detects a panic stop situation

◆

VSC (Vehicle Stability Control)

Helps the driver to control skidding when swerving suddenly or turning on slippery

road surfaces

◆

Active TRAC (Traction Control)

Helps to maintain drive power and prevent the 4 wheels from spinning when starting

the vehicle or accelerating on slippery roads, or in off-road conditions

◆

Hill-start assist control

Helps to reduce the backward movement of the vehicle when starting on an incline or

slippery slope

◆

AVS (Adaptive Variable Suspension system)

By independently controlling the damping force of the shock absorbers for each of

the 4 wheels according to the road and driving conditions, this system helps riding

comfort with superior steering stability, and helps good vehicle posture. When

SPORT S+ mode is selected by the driving mode select switch, the damping force is

suitable for sporty driving. (



P. 291)

◆

VGRS (Variable Gear Ratio Steering)

Helps to adjust the wheel turning angle in accordance with the vehicle speed and

steering wheel movement.

◆

Trailer Sway Control

Helps the driver to control trailer sway by selectively applying brake pressure for indi-

vidual wheels and reducing engine torque when trailer sway is detected.
Trailer Sway Control is part of the VSC system and will not operate if VSC turned off

or experiences a malfunction.

To help enhance driving safety and performance, the following systems oper-
ate automatically in response to various driving situations. Be aware, however,
that these systems are supplementary and should not be relied upon too heav-
ily when operating the vehicle.

386

The slip indicator light flashes to indi-
cate that the VSC/Trailer Sway Con-
trol/Active TRAC/hill-start assist
control systems have been engaged.

The stop lights and high mounted stop-

light turn on when the hill-start assist

control system or Trailer Sway Control is

operating.

If the vehicle gets stuck in fresh snow or mud, Active TRAC system reduce
power from the engine to the wheels. You may need to turn the system off to
enable you to rock the vehicle in order to free it.
Quickly push and release the button to
turn off Active TRAC.

The TRAC OFF indicator will come on.
Push the button again to turn the system

back on.

■

Turning off Active TRAC, VSC and Trailer Sway Control

Push and hold the button for more than 3 seconds while the vehicle is stopped to turn off

Active TRAC, VSC and Trailer Sway Control

The VSC OFF indicator light and TRAC OFF indicator will come on.

Push the button again to turn the system back on.

: On vehicles with pre-collision system, pre-collision brake assist and pre-collision brak-

ing will also be disabled. The PCS warning light will come on and the message will be
shown on the multi-information display. (



P. 256)

■

Automatic reactivation of Active TRAC, VSC and Trailer Sway Control

Turning the engine switch off after turning off the Active TRAC and VSC systems will

automatically re-enable them.

When the VSC/Trailer Sway Control/Active TRAC/hill-start assist
control systems are operating

Disabling the Active TRAC system

387

■

Automatic Active TRAC reactivation

If only the Active TRAC system is turned off, the Active TRAC system will turn on when

vehicle speed increases.

■

Automatic Active TRAC, VSC and Trailer Sway Control reactivation

If the Active TRAC, VSC and Trailer Sway Control are turned off, the systems will not

turn on even when vehicle speed increases.

■

If the brake system overheats

The brake system may overheat. In this case, a buzzer will sound, and the TRAC OFF

indicator will flash, and Active TRAC and hill-start assist control will be temporarily inop-

erable. In this event, stop the vehicle immediately in a safe place, and allow the brake sys-

tem to cool down sufficiently until the TRAC OFF indicator goes off. (There is no

problem with continuing normal driving.)

■

Sounds and vibrations caused by the Multi Terrain ABS, brake assist, Active TRAC,

VSC, Trailer Sway Control, hill-start assist control and VGRS

●

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 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 brake pedal may pulsate slightly after the Multi Terrain ABS is activated.

• The brake pedal may move down slightly after the Multi Terrain ABS is activated.

■

Hill-start assist control is operational when

●

The shift lever is in D or S.

●

The brake pedal is not depressed.

■

VGRS is disabled in the following situations

●

During stopping or the steering wheel has been moved for a long time while driving at

lower speeds.

●

After the engine is restarted at less than -22°F (-30°C).

●

If you disconnect the battery with the steering wheel turned, the center position of the

steering wheel could be slightly and temporary changed. To initialize the VGRS, drive

for a short while.

388

WARNING

Any of the following conditions may result in an accident which could cause death or seri-

ous injury:

■

The Multi Terrain ABS does not operate effectively when

●

The limits of tire gripping performance have been exceeded (such as excessively

worn tires on a snow covered road).

●

The vehicle hydroplanes while driving at high speed on a wet or slick road.

■

Stopping distance when the Multi Terrain ABS is operating may exceed that of nor-

mal conditions

The Multi Terrain ABS is not designed to shorten the vehicle’s stopping distance.

Always maintain a safe distance from the vehicle in front of you, especially in the follow-

ing situations.

●

When driving on dirt, gravel or snow-covered roads

●

When driving with tire chains

●

When driving over bumps in the road

●

When driving over roads with potholes or uneven roads

■

Active TRAC may not operate effectively when

Directional control and power may not be achievable while driving on slippery road

surfaces, even if the Active TRAC is operating.

Do not drive the vehicle in conditions where stability and power may be lost.

■

If the hill-start assist control does not operate effectively

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 in ice.

■

When Active TRAC, VSC and Trailer Sway Control are off

Be especially careful and drive at a speed appropriate to the road conditions. As these

are systems to help to ensure vehicle stability and driving force, do not turn off Active

TRAC, VSC and Trailer Sway Control unless necessary.

■

When the VSC and Trailer Sway Control are activated

The slip indicator light flashes. Always drive carefully.

Reckless driving may cause an accident. Exercise particular care when the indicator

light flashes.

389

WARNING

■

Replacing tires

Make sure that all tires are of the same size, brand, tread pattern and total load capac-

ity. In addition, make sure that the tires are inflated to the specified tire pressure level.
The Multi Terrain ABS, Active TRAC, VSC and Trailer Sway Control will not function

correctly if different tires are fitted on the vehicle.

Contact your Lexus dealer for further information when replacing tires or wheels.

■

Handling of tires and suspension

Using tires with any kind of problem or modifying the suspension will affect the driving

assist systems, and may cause the system to malfunction.

■

Trailer Sway Control precaution

The Trailer Sway Control system is not able to reduce trailer sway in all situations.

Depending on many factors such as the conditions of the vehicle, trailer, road surface,

and driving environment, the Trailer Sway Control system may not be effective. Refer to

your trailer owner’s manual for information on how to tow your trailer properly.

■

If trailer sway occurs

Observe the following precautions.

Failing to do so may cause death or serious injury.

●

Firmly grip the steering wheel. Steer straight ahead.

Do not try to control trailer swaying by turning the steering wheel.

●

Begin releasing the accelerator pedal immediately but very gradually to reduce

speed.

Do not increase speed. Do not apply vehicle brakes.

If you make no extreme correction with the steering or brakes, your vehicle and trailer

should stabilize. (



P. 207)

390

Winter 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 same size and brand, and that chains match the size of the

tires.

: Tire chains cannot be mounted on vehicles with 21-inch tires

Perform the following according to the driving conditions:

●

Do not try to forcibly open a window or move a wiper that is frozen. Pour
warm water over the frozen area to melt the ice. Wipe away the water imme-
diately to prevent it from freezing.

●

To ensure proper operation of the climate control system fan, remove any
snow that has accumulated on the air inlet vents in front of the windshield.

●

Check for and remove any excess ice or snow that may have accumulated on
the exterior lights, vehicle’s roof, chassis, around the tires or on the brakes.

●

Remove any snow or mud from the bottom of your shoes before getting in the
vehicle.

Carry out the necessary preparations and inspections before driving the vehi-
cle in winter. Always drive the vehicle in a manner appropriate to the prevail-
ing weather conditions.

Pre-winter preparations

Before driving the vehicle

391

Accelerate the vehicle slowly, keep a safe distance between you and the vehicle
ahead, and drive at a reduced speed suitable to road conditions.

●

Park the vehicle and move the shift lever to P without setting the parking
brake. The parking brake may freeze up, preventing it from being released. If
the vehicle is parked without setting the parking brake, make sure to block the
wheels.
Failure to do so may be dangerous because it may cause the vehicle to move
unexpectedly, possibly leading to an accident.

●

If the vehicle is parked without setting the parking brake, confirm that the shift
lever cannot be moved out of P

When the parking brake is in automatic mode, release the parking brake after shifting

the shift lever to P. (



P. 225)

: The shift lever will be locked if it is attempted to be shifted from P to any other position

without depressing the brake pedal. If the shift lever can be shifted from P, there may
be a problem with the shift lock system. Have the vehicle inspected by your Lexus
dealer immediately.



Vehicles with 20-inch tires

Use the correct tire chain size when mounting the snow chains.
Chain size is regulated for each tire size.

Side chain
(0.20 in. [5 mm] in diameter)
Cross chain
(0.25 in. [6.3 mm] in diameter)



Vehicles with 21-inch tires

Tire chains cannot be mounted.

Snow tires should be used instead.

When driving the vehicle

When parking the vehicle

Selecting tire chains

392

Regulations regarding the use of tire chains vary depending on location and type
of road. Always check local regulations before installing chains.

■

Tire chain installation

Observe the following precautions when installing and removing chains:

●

Install and remove tire chains in a safe location.

●

Install tire chains on the rear tires. Do not install tire chains on the front tires.

●

Install tire chains on rear tires as tightly as possible. Retighten chains after driving 1/4 -

1/2 mile (0.5 - 1.0 km).

●

Install tire chains following the instructions provided with the tire chains.

Regulations on the use of tire chains

WARNING

■

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 in excess of 75 mph (120 km/h), regardless of the type of snow tires

being used.

●

Use snow tires on all, not just some wheels.

■

Driving with tire chains (vehicles with 20-inch tires)

Observe the following precautions to reduce the risk of accidents.

Failing 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 acceleration, abrupt steering, sudden braking and shifting operations

that cause sudden engine braking.

●

Slow down sufficiently before entering a curve to ensure that vehicle control is main-

tained.

●

Do not use LDA (Lane Departure Alert) system. (if equipped)

■

When installing tire chains (vehicles with 20-inch tires)

Turn off the vehicle height control.
The vehicle height may change due to the automatic leveling function and you may

catch part of your body in the vehicle, resulting in an accident. (



P. 305)

393

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 (vehicles with 20-inch tires)

The tire pressure warning valves and transmitters may not function correctly when tire

chains are fitted.

394

Off-road precautions

●

Specific design characteristics give it a higher center of gravity than ordinary
passenger cars. This vehicle design feature causes this type of vehicle to be
more likely to rollover. And, utility vehicles have a significantly higher rollover
rate than other types of vehicles.

●

An advantage of the higher ground clearance is a better view of the road
allowing you to anticipate problems.

●

It is not designed for cornering at the same speeds as ordinary passenger cars
any more than low-slung sports cars are designed to perform satisfactorily
under off-road conditions. Therefore, sharp turns at excessive speeds may
cause the vehicle to rollover.

This vehicle belongs to the utility vehicle class, which has higher ground clear-
ance and narrower tread in relation to the height of its center of gravity to
make it capable of performing in a wide variety of off-road applications.

Off-road vehicle features

395

WARNING

■

Off-road vehicle precautions

Always observe the following precautions to minimize the risk of death, serious injury

or damage to your vehicle:

●

In a rollover crash, an unbelted person is significantly more likely to die than a person

wearing a seat belt. Therefore, the driver and all passengers should always fasten

their seat belts.

●

Avoid sharp turns or abrupt maneuvers, if at all possible.

Failure to operate this vehicle correctly may result in loss of control or vehicle rollover

causing death or serious injury.

●

Loading cargo on the roof luggage carrier will make the center of the vehicle gravity

higher. Avoid high speeds, sudden starts, sharp turns, sudden braking or abrupt

maneuvers, otherwise it may result in loss of control or vehicle rollover due to failure

to operate this vehicle correctly.

●

Always slow down in gusty crosswinds. Because of its profile and higher center of

gravity, your vehicle is more sensitive to side winds than an ordinary passenger car.

Slowing down will allow you to have better control.

●

Do not drive horizontally across steep slopes. Driving straight up or straight down is

preferred. Your vehicle (or any similar off-road vehicle) can tip over sideways much

more easily than forward or backward.

396

When driving your vehicle off-road, please observe the following precautions to
ensure your driving enjoyment and to help prevent the closure of areas to off-
road vehicles:

●

Drive your vehicle only in areas where off-road vehicles are permitted to
travel.

●

Respect private property. Get owner’s permission before entering private
property.

●

Do not enter areas that are closed. Honor gates, barriers and signs that
restrict travel.

●

Stay on established roads. When conditions are wet, driving techniques
should be changed or travel delayed to prevent damage to roads.

■

Additional information for off-road driving



For owners in U.S. mainland, Hawaii and Puerto Rico:

To obtain additional information pertaining to driving your vehicle off-road, consult the

following organizations:

●

State and Local Parks and Recreation Departments

●

State Motor Vehicle Bureau

●

Recreational Vehicle Clubs

●

U.S. Forest Service and Bureau of Land Management

Off-road driving

397

WARNING

■

Off-road driving precautions

Always observe the following precautions to minimize the risk of death, serious injury

or damage to your vehicle:

●

Drive carefully when off the road. Do not take unnecessary risks by driving in danger-

ous places.

●

Do not grip the steering wheel spokes when driving off-road. A bad bump could jerk

the wheel and injure your hands. Keep both hands and especially your thumbs on the

outside of the rim.

●

Always check your brakes for effectiveness immediately after driving in sand, mud,

water or snow.

●

After driving through tall grass, mud, rock, sand, rivers, etc., check that there is no

grass, bush, paper, rags, stone, sand, etc. adhering or trapped on the underbody.

Clear off any such matter from the underbody. If the vehicle is used with these materi-

als trapped or adhering to the underbody, a breakdown or fire could occur.

●

When driving off-road or in rugged terrain, do not drive at excessive speeds, jump,

make sharp turns, strike objects, etc. This may cause loss of control or vehicle rollover

causing death or serious injury. You are also risking expensive damage to your vehi-

cle’s suspension and chassis.

398