traction control LEXUS LX570 2018 Owners Manual

LX570_OM_OM60Q78U_(U) 11The SRS airbag and seat belt pretensioner devices in your Lexus contain explosive
chemicals. If the vehicle is scrapped with th e airbags and seat belt pretensioners left as
they are, this may cause an accident such as fire. Be sure to have the systems of the SRS
airbag and seat belt pretensioner removed and disposed of by a qualified service shop or
by your Lexus dealer befo re you scrap your vehicle.
Special handling may apply, See www.dt sc.ca.gov/hazardouswaste/perchlorate.
Your vehicle has components that may contain perchlorate. These components may
include airbag, seat belt pretensioners, and wireless remote control batteries.Scrapping of your Lexus
Perchlorate Material WARNING ■
General precautions while driving
Driving under the influence: Never drive your vehicle when under the influence of
alcohol or drugs that have impaired your ability to operate your vehicle. Alcohol and
certain drugs delay reaction time, impair judgment and reduce coordination, which
could lead to an accident that could result in death or serious injury.
Defensive driving: Always driv e defensively. Anticipate mistakes that other drivers or
pedestrians might make and be ready to avoid accidents.
Driver distraction: Always give your full attention to drivin g. Anything that distracts the
driver, such as adjusting controls, talking on a cellular phone or reading can result in a
collision with resulting death or serious in jury to you, your occupants or others.■
General precaution rega rding children’s safety
Never leave children unattended in the vehicl e, and never allow child ren to have or use
the key.
Children may be able to start the vehicle or sh ift the vehicle into neutral. There is also a
danger that children may injure themselves by play ing with the windows, the moon
roof, or other features of the vehicle. In addition, heat build-up or extremely cold tem-
peratures inside the vehicle can be fatal to children.

300
LX570_OM_OM60Q78U_(U) 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 caus e the suspension to fully elongate.●
If the steering wheel is abrupt ly 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 sh ort 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 en gine after off-road driving, the vehicle height may gradu-
ally lower. When parking, ma ke sure there is nothing un der the vehicle that may come
in contact with the underbody. The vehicle will return to th e 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 norm al mode depending on the location of the
malfunction.
The warning message is displa yed on the multi-informatio n display, and the 4-Wheel
AHC cannot be activated until the malfunction is corrected.
Stop the engine and start it again. If the wa rning message turns off, the system is operat-
ing correctly. If the warning me ssage continues to be displayed, have the vehicle checked
at your Lexus dealer as soon as possible.

303
LX570_OM_OM60Q78U_(U) 4-5. Using the driving support systems
4
Driving
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

304
LX570_OM_OM60Q78U_(U) 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 fr eed, 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 sp eed 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 sp eed 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 co ntrolled effectively by the Ac tive TRAC, which assists the
driver to control the driving power of 4 wheels. ●
Use the 1 range of S or D (vehicles with pa ddle 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

306
LX570_OM_OM60Q78U_(U) 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 result ing in death or serious injury.■
When the vehicle is parked
If the shift lever is moved be fore 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 po wertrain 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/u nlock switch when the vehicle is turning or
when its wheels are spinning freely off the ground.

307
LX570_OM_OM60Q78U_(U) 4-5. Using the driving support systems
4
Driving
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-ro ad 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 ro ad surfaces, allowing for stable driving.
Crawl Control switches 1
2
3
4

314
LX570_OM_OM60Q78U_(U) 4-5. Using the driving support systems
Operate the Multi-terrain Select mode
selector switch du ring Multi-terrain
Select control to select a mode. Once the mode is confirmed, the mode
name will be displayed and the control
will switch. ■
Automatic system cancelation
In the following situations, the Multi-terrain Select indicator will go off, and Multi-terrain
Select will be canceled automatically. ●
When the four-wheel drive control switch is in H4. ●
When Active TRAC and VSC are off. ■
When it is difficult to generate traction
MUD & SAND mode provides the largest amou nt of tire slippage, followed by LOOSE
ROCK, MOGUL, ROCK & DIRT and ROCK mode.
Drivability can be improved by selecting a mo de which provides a smaller amount of tire
slippage than the current mode when the amount of tire slippage is large, or conversely
selecting a mode which provides a larger amou nt of tire slippage than the current mode
when the amount of tire slippage is small. ■
When the vehicle is stuck
Switching the transfer and differential
For the operation of the following func tions, refer to th e following pages.●
Four-wheel drive system ( → P. 303)●
Center differential lock ( → P. 304)■
When the brake system operates continuously
The brake system may overheat. In this case , a buzzer will sound, the TRAC OFF indica-
tor will flash, and Multi-terrain Select will be temporarily inoperable. In this event, stop
the vehicle immediately in a safe place, and allow the brake system to cool down suffi-
ciently. (There is no problem wi th continuing normal driving.)
After a short time, the TRAC OFF indicator will go off, and you will be able to use Multi-
terrain Select. ■
When there is a malfunction in the system
The slip indicator light will come on. Have the vehicle in spected by your Lexus dealer
immediately.Switching modes

377
LX570_OM_OM60Q78U_(U) 4-5. Using the driving support systems
4
Driving
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 su rface, or in off-road conditions (such as
rough roads, sand and mud)
◆ Brake assist Generates an increase d 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 slippe ry 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 th e road and driving conditions, this system helps riding
comfort with superior steering stabilit y, and helps good vehicle posture. When
SPORT S+ mode is selected by the drivin g mode select switch, the damping force is
suitable for sporty driving. ( → P. 284)
◆ 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 to rque 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 perf ormance, the following systems oper-
ate automatically in response to variou s driving situations. Be aware, however,
that these systems are supplementary and should not be relied upon too heav-
ily when operating the vehicle.

5217-2. Steps to take in an emergency
LX570_OM_OM60Q78U_(U) 7
When trouble arises (Flashes or illuminates)
PCS warning light (if equipped)
Indicates a malfunction in the PCS (Pre-Collision System) or that
the system is temporarily unavailable due to the vehicle being
extremely hot/cold, or dirt around a front sensor, etc. ( → P. 260,
528)
→ Follow the instructions displaye d on the multi-information dis-
play. ( → P. 260, 528)
If the PCS (Pre-Collision System ) or VSC (Vehicle Stability Con-
trol) system is disabled, the PC S warning light will illuminate.
→ P. 260
Slip indicator
Indicates a malfunction in:
• The Multi-terrain Select;
• The Crawl Control;
• The VSC (Vehicle Stability Control) system;
• Active TRAC (Traction Control) system;
• Trailer Sway Control; or
• The hill-start assist control system
The light will flash when any of the above systems other than the
Multi-terrain Select are operating.
→ Have the vehicle inspected by your Lexus dealer immediately.
Automatic headlight leve ling system warning light
Indicates a malfunction in the automatic headlight leveling system
→ Have the vehicle inspected by your Lexus dealer immediately.Warning light Warning light/Details/Actions

LX570_OM_OM60Q78U_(U) 5738-1. Specifications
8
Vehicle specifications This information has been prepared in acco rdance with regulations issued by the
National Highway Traffic Safety Administra tion of the U.S. Department of Trans-
portation.
It provides the purchasers and/or prospe ctive purchasers of Lexus vehicles with
information on uniform tire quality grading.Your Lexus dealer will help answer any ques tions you may have as you read this infor-
mation.■
DOT quality grades
All passenger vehicle tires must conform to Federal Safety Requirements in
addition to these grades. Quality grad es can be found where applicable on
the tire sidewall between tread shoulder and maximum section width. For example: Treadwear 200 Traction AA Temperature A■
Treadwear
The treadwear grade is a comparative rati ng based on the wear rate of the tire
when tested under controlled conditio ns on a specified government test
course. For example, a tire graded 150 would wear one and a half (1 - 1/2) times as well on
the government course as a tire graded 100.
The relative performance of tires depends upon the actua l conditions of their use.
Performance may differ significantly from the norm due to variations in driving
habits, service practices and difference s in road characteristics and climate.■
Traction AA, A, B, C
The traction grades, from highest to lo west, are AA, A, B and C, and they rep-
resent the tire’s ability to stop on wet pavement as measured under controlled
conditions on specified government test surfaces of asphalt and concrete. A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking (straight
ahead) traction tests and does not include cornering (turning) traction.Uniform Tire Quality Grading