2019 Lexus GX460 Traction on

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GX460_OM_OM60Q84U_(U)6-1. Maintenance and care
NOTICE
■To prevent paint deterioration and corrosion
on the body and components (aluminum
wheels etc.)
●Wash the vehicle immediatel y in the following cases:
• After driving near the sea coast
• After driving on salted roads
• If coal tar or tree sap is present on the paint surface
• If you see dead insects, insect drop pings or bird droppings on the paint
• After driving in an area contaminated wi th soot, oily smoke, mine dust, iron pow-
der or chemical substances
• If the vehicle becomes heavily soiled in dust or mud
• If liquids such as benzene and gasoli ne are spilled on the paint surface
●If the paint is chipped or scratched, have it repaired immediately.
●To prevent the wheels from corroding, remove any dirt and store in a place with low
humidity when storing wheels.
■Cleaning the exterior lights
●Wash carefully. Do not use organic subs tances or scrub with a hard brush.
This may damage the surfaces of the lights.
●Do not apply wax on the surfaces of the lights.
Wax may cause damage to the lenses.
■To prevent damage to the windshield wiper arms
When lifting the wiper arms away from the windshield, pull the driver side wiper arm
upward first, and repeat for the passenger side. When returning the wipers to their
original position, do so from the passenger side first.
■When using an automatic car wash (vehic les with rain-sensing windshield wiper)
Set the wiper switch to the off position.
If the wiper switch is in “AUTO”, the wipers may operate and the wiper blades may be
damaged.
■When using a high pressure car wash
Do not bring the nozzle tip close to boots (rubber or resin manufactured cover), con-
nectors or the following parts. The parts may be damages if they come into contact
with high-pressure water.
●Traction related parts
●Steering parts
●Suspension parts
●Brake parts

GX460_OM_OM60Q84U_(U)
4776-3. Do-it-yourself maintenance
6
Maintenance and care
■Tire types
●Summer tires
Summer tires are high-speed performance tires best suited to highway driving under
dry conditions. Since summer tires do not have the same traction performance as
snow tires, summer tires are inadequate for driving on snow-covered or icy roads. For
driving on snow-covered roads or icy road s, the use of snow tires is recommended.
When installing snow tires, be sure to replace all four tires.
●All season tires
All season tires are designed to provide better traction in snow and to be adequate for
driving in most winter conditions as well as for use year-round. All season tires, how-
ever, do not have adequate traction perfor mance compared with snow tires in heavy
or loose snow. Also, all season tires fall short in acceleration and handling perfor-
mance compared with summer tires in highway driving.
●Snow tires
For driving on snow-covered roads or icy roads, we recommend using snow tires. If
you need snow tires, select ti res of the same size, construction and load capacity as the
originally installed tires. Since your vehicle has radial tires as original equipment, make
sure your snow tires also have radial cons truction. Do not install studded tires without
first checking local regulations for possible restrictions. Snow tires should be installed
on all wheels. ( P. 381)

5197-2. Steps to take in an emergency
GX460_OM_OM60Q84U_(U)
7
When trouble arises
(Flashes)
(If equipped)
“PCS” warning light Indicates a malfunction in the pre-collision system
The warning light will operate as follows, even when the system is
not malfunctioning:
• The light will flash quickly when the system is operating.
( P. 372)
• The light will turn on when the pre-collision braking is disabled. ( P. 373)
• The light will turn on when the system cannot temporarily be
used. ( P. 532)
 Have the vehicle inspected by your Lexus dealer immediately.
Slip indicator
Indicates a malfunction in:
• The Multi-terrain Select (if equipped);
• The Crawl Control (if equipped);
• The downhill assist cont rol system (if equipped);
• The VSC (Vehicle Stability Control) system;
• The TRAC (Traction Control) system;
• Active TRAC (Traction Control) system;
• Trailer Sway Control; or
• The hill-start assist control system (if equipped)
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.
LED headlight warning light
Indicates a malfunction in the LED headlights
The LED headlights will not normal ly illuminate when there is a
malfunction, however it may be able to illuminate depending on the
nature of the problem.
 Have the vehicle inspected by your Lexus dealer immediately.
(Flashes)
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.
Kinetic dynamic suspension system warning light
Indicates a malfunction in the kin etic dynamic suspension system.
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightWarning light/Details/Actions

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GX460_OM_OM60Q84U_(U)
7
When trouble arises
7-2. Steps to take in an emergency
If the vehicle becomes stuck
Stop the engine. Set the parking brake and shift the shift lever to P.
Remove the mud, snow or sand from around the stuck tire.
Place wood, stones or some other mate rial under the tires to help provide
traction.
Restart the engine.
Lock the center differential. ( P. 347)
Shift the shift lever to the D or R positi on and release the parking brake. Then,
while exercising caution, depress the accelerator pedal.
■When it is difficult to free the vehicle
Turn off TRAC or Active TRAC/VSC/Trailer Sway Control if these functions are ham-
pering your attempts to free the vehicle. ( P. 357)
Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt, or snow:
Press to turn off TRAC or Active TRAC/VSC/
Trailer Sway Control.
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GX460_OM_OM60Q84U_(U)
5858-1. Specifications
8
Vehicle specifications
This information has been prepared in accordance 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 grades 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 lowest, 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

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GX460_OM_OM60Q84U_(U)8-1. Specifications
Overall widthThe linear distance between the exteriors of the side-
walls of an inflated
tire, including elev ations due to label-
ing, decorations, or protective bands or ribs
Passenger car tire
A tire intended for use on passenger cars, multipurpose
passenger vehicles, and trucks, that have a gross vehicle
weight rating (GVWR) of 10,000 lb. or less.
PlyA layer of rubber-coat ed parallel cords
Ply separationA parting of rubber compou nd between adjacent plies
Pneumatic tire
A mechanical device made of rubber, chemicals, fabric
and steel or other materials, that, when mounted on an
automotive wheel, provides the traction and contains
the gas or fluid that sustains the load
Radial ply tire
A pneumatic tire in which the ply cords that extend to
the beads are laid at substa ntially 90 degrees to the
centerline of the tread
Reinforced tire A tire designed to operate at higher loads and at higher
inflation pressures than the corresponding standard tire
Section width
The linear distance between the exteriors of the side-
walls of an inflated tire, excluding elevations due to
labeling, decoration, or protective bands
SidewallThat portion of a tire between the tread and bead
Sidewall separationThe parting of the rubber compound from the cord
material in the sidewall
Snow tire
A tire that attains a traction index equal to or greater
than 110, compared to the ASTM E-1136 Standard Ref-
erence Test Tire, when using the snow traction test as
described in ASTM F-1805-00, Standard Test Method
for Single Wheel Driving Traction in a Straight Line on
Snow-and Ice-Covered Surfaces, and which is marked
with an Alpine Symbol ( ) on at least one sidewall
Tire related termMeaning

624Alphabetical index
GX460_OM_OM60Q84U_(U)
Alphabetical index
A/C ................................................ 390, 400Air conditioning filter........................487
ABS (Anti-lock Brake System)....... 355 Function ................................................. 355
Warning light ........................................ 518
Active Traction Control .................... 356
Air conditioning filter .......................... 487
Air conditioning system ......... 390, 400 Air conditioning filter........................487
Micro dust and pollen filter .......... 395
Airbags ........................................................ 36 Airbag operating conditions ........... 44
Airbag precautions for your child........................................ 39
Airbag warning light .......................... 518
Correct driving posture .................... 28
Curtain shield airbag operating conditions........................ 44
Curtain shield airbag precautions ........................................... 39
General airbag precautions............ 39
Locations of airbags ............................ 36
Modification and disposal of airbags ............................ 43
Side airbag operating conditions .............................................. 44
Side airbag precautions..................... 39
Side and curtain shield airbags operating conditions........................ 44
Side and curtain shield airbags precautions ........................................... 39
SRS airbags.............................................. 36
SRS warning light................................ 518
Alarm Alarm........................................................... 79
Warning buzzer .................................. 518 Anchor brackets...................................... 59
Antennas (smart access system
with push-button start) ...................... 119
Anti-lock brake system (ABS) ..................................................... 355 Function ..................................................355
Warning light ........................................ 518
Armrest ...................................................... 431
Assist grip .................................................432
Audio input
*
Audio system*
Automatic headlight leveling system ................................... 209
Automatic High Beam ......................... 210
Automatic light control system ...... 206
Automatic transmission.......................198 If the shift lever cannot be shifted from P ................................... 202
S mode....................................................200
AUX port
*
Auxiliary boxes ....................................... 414
AVS ........................................................... 345
Back door ..................................................109
Back-up lights Replacing light bulbs .......................503
Wattage ................................................. 577
Battery .......................................................470 Battery checking ................................ 470
If the vehicle battery is discharged.........................................559
Preparing and checking before winter ..................................... 381
Warning light ........................................ 518
Bluetooth
®*
A
B

634Alphabetical index
GX460_OM_OM60Q84U_(U)
Tools.............................................................541
TowingDinghy towing ...................................... 192
Emergency towing............................. 512
Towing hooks ....................................... 513
Trailer Sway Control ....................... 356
Trailer towing .........................................174
Trailer Sway Control........................... 356
TRAC (Traction Control) ................. 355
Transmission Automatic transmission ................... 198
AVS switch ...........................................345
If the shift lever cannot be shifted from P ...................................202
Trip information..........................................91
Trip meters ................................................. 87
Turn signal lights ................................... 204 Replacing light bulbs ............ 500, 501
Turn signal lever .................................204
Wattage .................................................. 577
USB port
*
Vanity lights Vanity lights ..........................................425
Wattage .................................................. 577
Vanity mirrors ........................................ 425
Vehicle identification number ......... 569
VSC (Vehicle Stability Control) .... 355 Warning buzzers ...................................518
Brake system ........................................ 518
Downshifting ........................................ 202
Open back door................................528
Open door ...........................................528
Seat belt remainder ............................ 521
Warning lights .........................................518 ABS ........................................................... 518
Automatic headlight leveling system ....................................................519
Brake system ........................................ 518
Charging system ................................ 518
KDSS..........................................................519
LED headlight .......................................519
Low fuel level .......................................520
Malfunction indicator lamp............ 518
Master warning light ........................520
Open door ...........................................520
Parking brake indicator ................... 518
PCS ............................................................519
Seat belt reminder light ..................520
Slip indicator ..........................................519
SRS............................................................. 518
Tire pressure warning light ...........520
Warning message................................ 526
Warning reflector holder.................... 416
Washer ....................................................... 217 Checking ............................................... 473
Preparing and checking before winter ..................................... 381
Switch ........................................................ 217
Washing and waxing ...........................444
Wide view front & side monitor ......294
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