LEXUS LX 570 (2019 year). Instruction - part 19

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4-5. Using the driving support systems

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●

The shape of the obstacle may prevent a sensor from detecting it. Pay particular atten-

tion to the following obstacles:
• Wires, fences, ropes, etc.

• Cotton, snow and other materials that absorb sound waves

• Sharply-angled objects

• Low obstacles

• Tall obstacles with upper sections projecting outwards in the direction of your vehi-

cle

●

The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection distance

may shorten, or detection may be impossible.

• Obstacles may not be detected if they are too close to the sensor.

• There will be a short delay between obstacle detection and display. Even at slow

speeds, there is a possibility that the obstacle will come within the sensor’s detection

areas before the display is shown and the buzzer sounds.

• Thin posts or objects lower than the sensor may not be detected when approached,

even if they have been detected once.

• It might be difficult to hear beeps due to the volume of audio system or air flow noise

of the air conditioning system.

■

If “Clean Parking Assist Sensor” is displayed on the multi-information display
A sensor may be dirty or covered with snow or ice. In such cases, if it is removed from the

sensor, the system should return to normal.
Also, due to the sensor being frozen at low temperatures, a malfunction display may

appear or an obstacle may not be detected. If the sensor thaws out, the system should

return to normal.

■

If “Parking Assist Malfunction” is displayed on the multi-information display
Depending on the malfunction of the sensor, the device may not be working normally.

Have the vehicle inspected by your Lexus dealer.

■

Certification for the intuitive parking assist (Canada only)
This ISM device complies with Canadian ICES-001.

■

Customization
Settings (e.g. buzzer sounds volume) can be changed. 

(Customizable features: 

P. 584)

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4-5. Using the driving support systems

WARNING

■

When using the intuitive parking assist
Observe the following precautions.

Failing to do so may result in the vehicle being unable to be driven safely and possibly

cause an accident.

●

Do not use the sensor at speeds in excess of 6 mph (10 km/h).

●

The sensors’ detection areas and reaction times are limited. When moving forward or

reversing, check the areas surrounding the vehicle (especially the sides of the vehi-

cle) for safety, and drive slowly, using the brake to control the vehicle’s speed.

●

Do not install accessories within the sensors’ detection areas.

NOTICE

■

When using intuitive parking assist
In the following situations, the system may not function correctly due to a sensor mal-

function etc. Have the vehicle checked by your Lexus dealer.

●

A buzzer does not sound when you turn the intuitive parking assist on.

●

The intuitive parking assist operation display flashes, and a buzzer sounds when no

obstacles are detected.

●

If the area around a sensor collides with something, or is subjected to strong impact.

●

If the bumper collides with something.

●

If the display shows continuously without a buzzer.

●

If a display error occurs, first check the sensor.

If the error occurs even if there is no ice, snow or mud on the sensor, it is likely that the

sensor is malfunctioning.

■

Notes when washing the vehicle
Do not apply intensive bursts of water or steam to the sensor area.
Doing so may result in the sensor malfunctioning.

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4-Wheel AHC (Active Height Control Suspension)

Easy access mode switch
Height control OFF switch
Height select switch

Higher
Lower

The 4-Wheel AHC adjusts the vehicle height in accordance with driving con-
ditions. There are 3 selectable modes, “HI” (high), “N” (normal), and “LO”
(low).

1

2
3

Selecting vehicle height

1

2

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4-5. Using the driving support systems

Current mode

The vehicle is in the N (normal) height
mode in the illustration. 

 and 

show directions in which it is possible to

adjust the vehicle height.

Height up
Height down
Height control “OFF” indicator

When the height control “OFF” indicator is displayed, the vehicle height will not

change even if the height select switch is operated.

Push the height select switch to “

” to step up one height mode, and pull to “” to

step down one height mode. (Ex. When in the low height mode, push to “

” once

to switch to the normal height mode, and twice to switch to the high height
mode.)

■

“HI” (high) height mode
Vehicle height is about 2.0 in. (50 mm) higher at the front, and about 2.4 in.
(60 mm) higher at the rear than the normal mode height.
This mode is suitable when driving on bumpy roads or through water.
High height mode is only available when the vehicle speed is under 18 mph
(30 km/h).

■

N (normal) height mode
The standard vehicle height. This mode is suitable for ordinary driving.
When driving at high speeds, the vehicle height is automatically lowered by
0.8 in. (20 mm) in the front and 0.6 in. (15 mm) in the rear, to ensure excellent
aerodynamic characteristics and stability.
If the vehicle speed drops, normal height mode is automatically resumed.

■

“LO” (low) height mode
Vehicle height is about 2.4 in. (60 mm) lower at the front, and about 1.6 in. (40
mm) lower at the rear than the normal mode height.
This mode allows easy access to the vehicle.
Low height mode is only available when the vehicle is travelling at 7 mph
(12 km/h) or less. When the vehicle speed exceeds 7 mph (12 km/h), normal
height mode is automatically selected.

Display

1

2
3
4

Vehicle height modes

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4-5. Using the driving support systems

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Some modes may not be selectable depending on the vehicle speed when the
four-wheel drive control switch is in the H4 position. Refer to the following table.

You can select this mode for easy
access and easy loading of the vehicle.

If  the  engine  switch  is turned off within

approximately 30 seconds after the

vehicle is stopped while easy access

mode is on, the vehicle height is lowered

automatically.
When the vehicle begins to lower a

beep will sound twice, and while the

vehicle is lowering the indicator light will

flash to alert the driver and surrounding

people that the vehicle is lowering.
The indicator light stops blinking, and comes on continuously to indicate that the shift

is completed.

Easy access mode is available if the following conditions have been met:

●

The vehicle height mode is in normal mode.

●

The vehicle is stopped on a flat surface.

●

The shift lever is in P.

●

The side doors and back door are not opened after the vehicle is stopped.

The following method will cancel the vehicle lowering operation and raise the
vehicle again:

●

Press the height control OFF switch.

●

Push the height select switch to “

”.

Conditions for changing the vehicle height mode

Low mode

Normal mode

High mode

Under 7 mph (12 km/h)

Yes

Yes

Yes

7 mph (12 km/h) to 

18 mph (30 km/h)

No

Yes

Yes

18 mph (30 km/h) or over

No

Yes

No

Easy access mode

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4-5. Using the driving support systems

When the height control OFF switch is
pressed with the vehicle stopped.

The height control “OFF” indicator will

appear on the multi-information display,

and the vehicle height will be fixed in the

current mode. Push the switch again to

turn the system back on.

■

Operating conditions

●

The engine must be running.

●

Vehicle height control must be turned off.

●

All side doors and the back door must be closed.

■

Switching vehicle height mode while the engine is stopped

●

If the engine is stopped while the vehicle height is being lowered, lowering will continue.

●

If any luggage is removed from the vehicle or if any occupants leave the vehicle within

approximately 30 seconds of the engine switch being turned off, the vehicle height may

be lowered by the auto leveling function.

●

Operating the height select switch will have no effect while the engine is stopped.

■

Automatic change in vehicle height when the four-wheel drive control switch is in the

L4 position
If the vehicle speed exceeds 2 mph (3 km/h) while driving on an uneven road with the

four-wheel drive control switch in the “L4” position, high mode is automatically selected.

(On even roads, the height mode will not change.)

■

Automatic change in vehicle height when in the high mode

●

If the vehicle speed exceeds 18 mph (30 km/h) with the four-wheel drive control switch

in the “H4” position, normal mode is automatically selected.

●

If the vehicle speed exceeds 30 mph (50 km/h) with the four-wheel drive control

switch in the “L4” position, the vehicle height is lowered to 1.0 in. (25 mm) higher than

the normal mode height. If the vehicle speed drops to 13 mph (20 km/h) or less, high

mode is automatically resumed.

Disabling the height control

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■

Extra high mode
If the vehicle becomes stuck or the Crawl Control system requests the vehicle height be

raised, extra high mode may be automatically selected when the vehicle height is in high

mode with the four-wheel drive control switch in the L4 position.

The vehicle height is raised to 0.8 in. (20 mm) higher than the high mode height, or

slightly higher.

●

Extra high mode will change back to high mode when:
• The vehicle speed exceeds 6 mph (10 km/h)

• The four-wheel drive control switch is shifted to H4.

●

If you pull the height select switch to “

” when in extra high mode, normal mode is

selected.

●

Extra high mode cannot be manually selected.

■

Turning off the height control

●

The system will remain off until the height control “OFF” switch is pushed again, even if

the engine switch is turned off.

●

Even if the system is turned off, the system will intervene automatically if the vehicle

speed exceeds the following.
• 18 mph (30 km/h) with high or low mode

• 50 mph (80 km/h) with normal mode

■

Automatic leveling function
The vehicle is adjusted to a fixed height for each mode, regardless of the number of

occupants and the luggage load.

●

However the vehicle cannot be raised if the vehicle load exceeds the following limits:
• Up to 4 occupants

*

 plus approximately 661 lb. (300 kg) in the normal mode

• Up to 4 occupants

*

 plus approximately 441 lb. (200 kg) in the high mode

*

: average weight 150 lb. (68 kg) per person

●

If the vehicle height cannot be raised when in the normal mode, and “LO” appears on

the display, the vehicle is loaded too heavily. Take extra care when driving in this condi-

tion.

If the vehicle height cannot be raised even after unloading the vehicle, pull the height

select switch to “

” then push to “”. If the vehicle height still cannot be raised, turn the

ignition off then on again, then try once more.

■

When the vehicle is stopped during driving
The activation of the automatic leveling function may cause the vehicle height to change.

This is not a malfunction.

■

If the vehicle height does not change
If the vehicle is loaded too heavily, or the undercarriage has come into contact with the

road surface, the vehicle height cannot be raised/lowered.

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4-5. Using the driving support systems

■

In the following cases the 4-Wheel AHC will not operate

●

The brake pedal has been depressed for a few seconds or longer while the vehicle is

stopped. 

●

Vehicle height control has not been frequently used.

●

The suspension fluid temperature is lower than -22°F (-30°C).

●

There is ice on the suspension.

●

Driving on bumpy roads which may cause the suspension to fully elongate.

●

If the steering wheel is abruptly turned more than 3/4 of a revolution with the center dif-

ferential lock system activated.

■

Cold weather operation
It may take longer for the vehicle height to change if the suspension fluid temperature

drops below 5°F (-15°C).
The 4-Wheel AHC does not operate when the suspension fluid temperature drops

below -22°F (-30°C).

●

In this case, even if the height select switch is pressed, the vehicle height will not change.

Once the vehicle has been driven for a short time and the suspension fluid has been

warmed to within normal operating limits, the 4-Wheel AHC will begin operating and

the vehicle height will automatically change to the selected mode.

●

When the suspension fluid is around -22°F (-30°C), the vehicle height may not be able

to be raised, even if the 4-Wheel AHC is operating. In this case, pull the height select

switch to “

” then push to “” after driving for a short time longer to select the desired

vehicle height.

■

Parking and stopping tips

●

If you immediately stop the engine after off-road driving, the vehicle height may gradu-

ally lower. When parking, make sure there is nothing under the vehicle that may come

in contact with the underbody. The vehicle will return to the set height when the engine

is started.

●

The vehicle height may change as the temperature changes when the engine is

stopped. The vehicle will return to the set height when the engine is started.

■

Propeller shaft noise
If the vehicle height is adjusted on a slope, or with the shift lever in a position other than P

or N while the vehicle is stopped, you may hear a sound caused by the expansion and

contraction of the propeller shaft. This does not indicate a malfunction.

■

4-Wheel AHC failure warning
If a malfunction occurs in the 4-Wheel AHC, normal mode is automatically selected.

However, the system may not switch to normal mode depending on the location of the

malfunction.

The warning message is displayed on the multi-information display, and the 4-Wheel

AHC cannot be activated until the malfunction is corrected.

Stop the engine and start it again. If the warning message turns off, the system is operat-

ing correctly. If the warning message continues to be displayed, have the vehicle checked

at your Lexus dealer as soon as possible.

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WARNING

■

When switching the vehicle height mode
Before lowering the vehicle height, check that there are no people under or around the

vehicle, and check for obstacles.
If you do not do this, body parts may be caught in the vehicle, possibly leading to an

accident.

■

Using the high mode
The high mode should only be used when driving on rough roads, for example when

driving off-road. Because the vehicle’s center of gravity will become higher when in the

mode, the vehicle may become unstable when turning abruptly, resulting in an acci-

dent.

■

When jacking up the vehicle or installing tire chains
Turn off the height control and stop the engine, otherwise 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.

■

When crossing rivers
Select the high mode and turn off the height control. Drive at 18 mph (30 km/h) or

lower. Otherwise the vehicle height may change due to the automatic leveling function,

resulting in an accident.

■

If your vehicle must be towed
Put the vehicle height in the normal mode and turn off the height control, otherwise 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.

■

If your vehicle becomes stuck in a ditch
Turn off the height control, otherwise the vehicle height may change due to the auto-

matic leveling function, resulting in an accident.

■

When loading cargo on the roof luggage carrier
Do not switch to high mode. Sudden steering could cause the vehicle to lose stability

due to the vehicle’s higher center of gravity, possibly leading to an accident.

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4-5. Using the driving support systems

NOTICE

■

When parking in areas with limited overhead height
After leaving the vehicle or unloading the luggage, the vehicle height may be slightly

higher than normal. Take care when overhead height is limited.

■

To avoid damage to the vehicle

●

Normal mode will be switched to automatically even if the vehicle is started off in low

mode. Take care when overhead height is limited.

●

Do not select the low mode when driving on bumpy roads, as the underbody of the

vehicle may contact the road surface.

●

When traveling on bumpy roads or through water, or when towing, turn off easy

access mode.

■

Avoid rapid changes to the vehicle height
As the pump may overheat. Leave at a few seconds between selections when changing

the vehicle height mode.

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Four-wheel drive system

H4 (high speed position)

Normal driving on all types of roads.

L4 (low speed position)

Driving requiring maximum power and

traction such as climbing or descending

steep hills, off-road driving, and hard

pulling in sand or mud, etc.
The low speed four-wheel drive indica-

tor will come on.

Use the four-wheel drive control switch and center differential lock/unlock
switch to select the following transfer and center differential modes.

Four-wheel drive control switch

1

2

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4-5. Using the driving support systems

Lock the center differential when your
vehicle’s wheels get stuck in a ditch or
when driving on a slippery or bumpy
surface.

The center differential lock indicator will

come on.
Unlock the center differential after the

wheels have been freed, or after moving

to a flat, non-slippery surface.
To unlock the center differential, push the switch again.

■

Shifting from H4 to L4

Stop the vehicle completely with brake pedal held down.
Shift the shift lever to N.
Push and shift the four-wheel drive control switch to L4.

Maintain this condition until the low speed four-wheel drive indicator turns on.

■

Shifting from L4 to H4

Stop the vehicle completely with brake pedal held down.
Shift the shift lever to N.
Push and shift the four-wheel drive control switch to H4.

Maintain this condition until the low speed four-wheel drive indicator turns off.

■

The four-wheel drive control switch can be operated when

●

The engine switch is in IGNITION ON mode.

●

The shift lever is in the N position.

●

The vehicle is stopped completely.

■

The low speed four-wheel drive indicator light
The indicator light blinks while shifting between H4 and L4.

■

Advice for driving on slippery roads

●

If you shift the four-wheel drive control switch to L4 and the shift lever to the 2 range of

S or D (vehicles with paddle shift switches) while driving in steep off-road areas, the

output of the brake can be controlled effectively by the Active TRAC, which assists the

driver to control the driving power of 4 wheels.

●

Use the 1 range of S or D (vehicles with paddle shift switches) for maximum power and

traction when your wheels get stuck or when driving down a steep incline.

Center differential lock/unlock switch

Shifting between H4 and L4

1

2
3

1

2
3

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■

The center differential lock indicator light
The indicator light blinks while locking/unlocking the center differential.

■

The center differential lock/unlock switch can be operated when

●

The engine switch is in IGNITION ON mode.

●

The vehicle speed is less than 62 mph (100 km/h).

■

Locking/unlocking the center differential

●

When the four-wheel drive control switch is in L4 with the center differential locked,

VSC is automatically turned off. (The center differential lock and VSC OFF indicator

lights come on.)

●

If the operation is not completed, the center differential lock indicator blinks. If the indi-

cator light does not turn off when unlocking the center differential, drive straight ahead

while accelerating or decelerating, or drive in reverse.

●

If the center differential lock/unlock is not completed within 5 seconds while the cruise

control system is on, cancel the cruise control system.

■

If the low speed four-wheel drive indicator light or the center differential lock indicator

light blinks

●

If the low speed four-wheel drive indicator light continues to blink when using the four-

wheel drive control switch, stop the vehicle completely, move the shift lever to N and

operate the switch again.

●

If the shift lever is moved before the low speed four-wheel drive indicator turns on/off,

the transfer mode may not be shifted completely. The transfer mode disengages both

the front and rear driveshafts from the powertrain and allows the vehicle to move

regardless of the shift position. (At this time, the indicator blinks and the buzzer sounds.)
Therefore, the vehicle is free to roll even if the automatic transmission is in P. You or

someone else could be seriously injured. You must complete the shifting of the transfer

mode.
To complete the shifting, stop the vehicle completely, return the shift lever to N, and

confirm that the shift was completed (the indicator turns on/off).

●

If the engine coolant temperature is too low, the four-wheel drive control system may

not be able to shift. When the engine is warmer operate the switch again.

If the low speed four-wheel drive indicator light or the center differential lock indicator

light continues to blink even after attempting the above, there may be a malfunction in

the engine, the brake system or the four-wheel drive system. In this case, you may not be

able to shift between H4 and L4, and the center differential lock may not be operable.

Have the vehicle inspected by your Lexus dealer immediately.

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4-5. Using the driving support systems

WARNING

■

While driving
Never move the four-wheel drive control switch if the wheels have lost traction. Doing

so may cause an accident resulting in death or serious injury.

■

When the vehicle is parked
If the shift lever is moved before the low speed four-wheel drive indicator turns on/off,

the transfer mode may not be shifted completely. The transfer mode disengages both

the front and rear driveshafts from the powertrain and allows the vehicle to move

regardless of the shift position. (At this time, the indicator blinks and the buzzer

sounds.)
Therefore, the vehicle is free to roll even if the automatic transmission is in P. You or

someone else could be seriously injured. You must complete the shifting of the transfer

mode.

NOTICE

■

To prevent damage to the center differential

●

For normal driving on dry and hard surface roads, unlock the center differential.

●

Unlock the center differential after the wheels are out of the ditch or off the slippery

or bumpy surface.

●

Do not push the center differential lock/unlock switch when the vehicle is turning or

when its wheels are spinning freely off the ground.

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Crawl Control (with Turn Assist function)

ON/OFF switch
Speed selection switch
Indicators

The Crawl Control indicator is lit and

the slip indicator flashes when operat-

ing.

Multi-information display

The operating status and speed select

status of the Crawl Control are shown

on the multi-information display.

Allows travel on extremely rough off-road surfaces at a fixed low speed with-
out pressing the accelerator or brake pedal. Minimizes loss of traction or
vehicle slip when driving on slippery road surfaces, allowing for stable driving.

Crawl Control switches

1

2
3

4

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4-5. Using the driving support systems

The following table shows some typical
terrains and the recommended speed
modes.

This function assists cornering performance in accordance with steering opera-
tion when driving through a tight corner. It maintains vehicle speed while driving
and reduces the number of turns needed to navigate a corner that requires turn-
ing the wheel in the opposite direction.
Press the Turn Assist switch while
Crawl Control is operating.

Turn Assist indicator will come on.
To turn the system off, press the switch

again.

Speed modes

Mode

Road condition

Lo

Rock, mogul (downhill) and gravel (down-

hill)

Lo-Med

Mogul (uphill)

Med

Snow, mud, gravel (uphill), sand, dirt,

mogul (uphill) and grass

Med-Hi

Hi

Turn Assist function

1

2

3

4

5