SUSPENSION CONTROL SYSTEM Lexus GX460 2017 Owner's Manual

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GX 460 _O M_ OM6 0F 6 8U _(U )
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4-1. Before driving Driving the vehicle ..................... 158
Cargo and luggage.....................165
Vehicle load limits ........................169
Tr a i l e r t o w i n g (with towing hitch) .................... 170
Dinghy towing .............................. 188
4-2. Driving procedures Engine (ignition) switch ............ 189
Automatic transmission ............194
Turn signal lever ..........................200
Parking brake ............................... 201
4-3. Operating the lights and wipers
Headlight switch ........................ 202
Automatic High Beam............. 205
Fog light switch ............................ 210
Windshield wipers and washer ...........................................212
Rear window wiper and washer ........................................... 217
Headlight cleaner switch ..........219
4-4. Refueling Opening the fuel tank cap ..... 220 4-5. Using the driving support
systems
Cruise control ..............................224
Dynamic radar cruise control ..........................................227
LDA (Lane Departure Alert)........ 238
Intuitive parking assist ...............244
Rear view monitor system ...... 253
Lexus parking assist monitor........................................ 263
Wide view front & side monitor........................................ 289
Multi-terrain Select...................308
Multi-terrain Monitor.................313
Rear height control air suspension ..................................337
AVS (Adaptive Variable Suspension System).................341
Four-wheel drive system ......... 342
Crawl Control ............................. 346
Downhill assist control system .......................................... 349
Driving assist systems ................351
BSM (Blind Spot Monitor)......357 •The Blind Spot Monitor function .................................... 362
• The Rear Cross Traffic Alert function ........................ 365
PCS (Pre-Collision system) .......... 368
4-6. Driving tips Winter driving tips ......................377
Off-road precautions...............380
4Driving
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GX 460 _O M_ OM6 0F 6 8U _(U )
4Driving
4-1. Before drivingDriving the vehicle ......................158
Cargo and luggage .................... 165
Vehicle load limits ....................... 169
Trailer towing (with towing hitch).................... 170
Dinghy towing...............................188
4-2. Driving procedures Engine (ignition) switch ............ 189
Automatic transmission ............ 194
Turn signal lever ......................... 200
Parking brake ................................ 201
4-3. Operating the lights and wipers
Headlight switch .........................202
Automatic High Beam ............ 205
Fog light switch............................. 210
Windshield wipers and washer........................................... 212
Rear window wiper and washer........................................... 217
Headlight cleaner switch ......... 219
4-4. Refueling Opening the fuel tank cap ......220 4-5. Using the driving support
systems
Cruise control ............................. 224
Dynamic radar cruise control ......................................... 227
LDA (Lane Departure Alert) ........238
Intuitive parking assist .............. 244
Rear view monitor system ...... 253
Lexus parking assist monitor ........................................ 263
Wide view fro nt & side monitor ........................................ 289
Multi-terrain Select .................. 308
Multi-terrain Monitor ................ 313
Rear height control air suspension ................................. 337
AVS (Adaptive Variable Suspension System) ................ 341
Four-wheel drive system ......... 342
Crawl Control ............................. 346
Downhill assist control system .......................................... 349
Driving assist systems................ 351
BSM (Blind Spot Monitor) ..... 357 • The Blind Spot Monitor function .................................... 362
• The Rear Cross Traffic Alert function......................... 365
PCS (Pre-Collision system) ..........368
4-6. Driving tips Winter driving tips ......................377
Off-road precautions .............. 380
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GX 460 _O M_ OM6 0F 6 8U _(U )4-1. Before driving
■AVS (adaptive variable suspension system)
The suspension can be switched fo
r improvement in driveability. (→P. 3 4 1 )
■Break-in schedule
If your vehicle is new or equipped with any new power train components (such as an
engine, transmission, differential or wheel bearing), Lexus recommends that you do not
tow a trailer until the vehicle has been driven for over 500 miles (800 km).
After the vehicle has been driven for over 500 miles (800 km), you can start towing.
However, for the next 500 miles (800 km), drive the vehicle at a speed of less than
50 mph (80 km/h) when towing a trailer, and avoid full throttle acceleration.
■Maintenance
●If you tow a trailer, your vehicle will require more frequent maintenance due to the addi-
tional load. (See “Owner’s Guide”, “Warranty and Services Guide”, “Owner’s Manual
Supplement” or “Warranty Booklet”.)
●Retighten the fixing bolts of the towing ball and bracket after approximately 600 miles
(1000 km) of trailer towing.
■If trailer sway occurs
One or more factors (crosswinds, passing vehicles, rough roads, etc.) can adversely
affect handling of your vehicle and trailer, causing instability.
●If trailer swaying occurs:
• 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.
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GX 460 _O M_ OM6 0F 6 8U _(U )4-5. Using the driving support systems
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Driving
Rear height control air suspension∗
Height control OFF button
Height control switch
Operating the switch changes vehicle rear height as follows: Higher
Lower
Vehicle height can be adjusted only
when the engine is running.
The selected height mode will be
shown on the rear height control air
suspension display.
The selected mode will flash while the
height mode is being changed.
∗: If equipped
The rear height control air suspension allows the driver to control vehicle rear
height in order to adjust driving conditions. Select the desired height with the
height control switch.
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Selecting vehicle height
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3394-5. Using the driving support systems
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Driving
■When HI mode is selected
The vehicle height will change to N mode when driving at the speeds of 18 mph (30 km/h).
Even if vehicle speed is then reduced to under 18 mph (30 km/h), height will not return to
HI mode.
■When LO mode is selected
The vehicle height will change to N mode when vehicle speed exceeds 7 mph (12 km/h).
Even if vehicle speed is then reduced to under 7 mph (12 km/h), height will not return to
LO mod e .
■Automatic leveling function
Regardless of the number of occupants and the luggage load, vehicle height in any mode
is always adjusted to a fixed height by the automatic leveling function.
■The rear height control air suspension will not operate in the following cases:
●The underbody of the vehicle is touching the surface of the road.
●The area around the suspension is covered with ice.
■Even if you hear an operating noise
This does not indicate a problem in the rear height control air suspension.
■Parking and stopping tips
●If you immediately stop the engine after off-road driving, or park the vehicle for a long
time, the vehicle height may gradually 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.
■When lowering the vehicle
In order to prevent the vehicle height from rising as occupants leave the vehicle, lowering
control will occur for a short while after the engine has been stopped.
■The rear height control air suspension failure warning
●If a malfunction occurs in the rear height control air suspension, N mode is automati-
cally selected. However, the system may no t switch to N mode depending on the loca-
tion of the malfunction.
●The warning message is displayed on the mult i-information display, and the rear height
control air suspension 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 your vehicle
inspected by your Lexus dealer as soon as possible.
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GX 460 _O M_ OM6 0F 6 8U _(U )4-5. Using the driving support systems
CAUTION
■The rear height control air suspension must be turned off
Be sure to observe the following precautions. Otherwise, the automatic leveling func-
tion may cause vehicle height to change, an
d you may catch part of your body in the
vehicle, resulting in an accident:
●When jacking up the vehicle, installing tire chains or tying the vehicle with chains/
wires for transportation via flatbed truck, turn off the rear height control air suspen-
sion and stop the engine.
●When the vehicle must be towed or disconnecting a trailer, put the vehicle height in N
mode and turn off the rear height control air suspension.
●When the vehicle is stuck, turn off the rear height control air suspension.
■Selecting the correct height mode
●HI mode should only be used when drivin g on rough roads, for example when driving
off-road.
Because the vehicle’s center of gravity w ill become higher when in the mode, the
vehicle may become unstable when turning abruptly, resulting in an accident.
●Do not select HI mode when loading cargo on the roof luggage carrier.
Because the vehicle’s center of gravity w ill become higher when in the mode, the
vehicle may become unstable when turning abruptly, resulting in an accident.
●Before lowering vehicle height, check that there is no one under the vehicle.
NOTICE
■Be careful in any place where overhead space is limited
The vehicle height will rise when a higher mo de is selected or cargo is unloaded. This
may cause damage to the vehicle.
■Do not select LO mode when driving on bumpy roads
If the underbody of the vehicle touches a rugged road surface, the vehicle may be
damaged.
■Changing vehicle height
Do not change vehicle height frequently.
The compressor may overheat and stop operation.
■When on the extremely uneven roads with rocks
Sometimes the vehicle height is not adjusted because it is judged as uneven road driv-
ing.
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Driving
AVS (Adaptive Variable Suspension System)∗
Sport mode
For winding mountain road driving or
high speed driving
Normal mode
For normal driving
Comfort mode
When compared to normal mode, ride
comfort is improved.
■Driving mode
●Mode is suitable for heavy load
or driving on a unpaved road.
●With the four-wheel drive control switch at L4, the damping effect suitable for off-road
driving will be provided, regardless of the position of the AVS switch.
∗: If equipped
The driving modes can be selected to suit driving condition.
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GX 460 _O M_ OM6 0F 6 8U _(U )4-5. Using the driving support systems
◆Active TRAC (Traction Control) for L4 position*
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 (if equipped)
Helps to prevent the vehicle from rolling backwa
rd when starting on an incline or slip-
pery slope
◆KDSS (Kinetic Dynamic Suspension System)
KDSS helps to enhance ride comfort and handling response by using a hydraulic con-
trol system to control the suspension stabiliz er bars in response to road surface and
driving conditions during co rnering or off-road driving
◆PCS (Pre-Collision system) (if equipped)
→P. 3 6 8
◆Tr a i l e r S w a y C o n t r o l
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 sy stem and will not operate if VSC turned off
or experiences a malfunction.
*: The function only works in vehicles with Multi-terrain Select when Multi-terrain
Select is switched on
If the vehicle is in danger of slipping or
rolling backward when starting on an
incline, or if any of the drive wheels
spins, the slip indicator light flashes to
indicate that the TRAC or Active
TRAC/VSC/Trailer Sway Control/hill-
start assist control systems are operat-
ing.
The stop lights and high mounted stoplight turn on when the hill-start assist control
system is operating.
When the TRAC or Active TRAC/VSC/Trailer Sway Control/hill-start
assist control systems are operating
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GX 460 _O M_ OM6 0F 6 8U _(U )4-5. Using the driving support systems
CAUTION
■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 recommended tire inflation
pressure level.
The ABS/Multi Terrain ABS, TRAC/Active
TRAC and VSC/Trailer Sway Control will
not function correctly if different tires are installed on the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.
■Handling of tires and the suspension
Using tires with any kind of problem or modi fying 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. 1 8 4 )
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GX 460 _O M_ OM6 0F 6 8U _(U )4-5. Using the driving support systems
PCS (Pre-Collision system)∗
◆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 con-
trol of the vehicle. (
→P. 3 1 )
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 deter-
mines 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.
◆AVS (Adaptive Variable Suspension System) control (if equipped)
When the system determines that there is a high possibility of a frontal colli-
sion, the AVS optimizes the damping effect ( →P. 3 4 1 )
∗: If equipped
When the radar sensor detects possibility of a frontal collision, the pre-colli-
sion system such as the brakes and seat belts are automatically engaged to
lessen impact as well as vehicle damage.
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