service Lexus GX460 2021 / User Guide

374
GX460_OM_OM60T19U_(U)4-6. Driving tips
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 br and, and that chains match the size of the
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 me lt the ice. Wipe away the water imme-
diately to prevent it from freezing.
●To ensure proper operation of the c limate 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, chassi s, 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 an d 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

GX460_OM_OM60T19U_(U)
3794-6. Driving tips
4
Driving
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 road s. When conditions are wet, driving techniques
should be changed or travel dela yed 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 Bu reau of Land Management
Off-road driving

441
GX460_OM_OM60T19U_(U)
6Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior ................ 442
Cleaning and protecting the vehicle interior.................. 445
6-2. Maintenance Maintenance requirements ............................448
General maintenance............... 451
Emission inspection and maintenance (I/M)
programs .................................... 454
6-3. Do-it-yourself maintenance Do-it-yourself service precautions................................455
Hood ...............................................458
Engine compartment ............... 459
Tires ................................................. 472
Tire inflation pressure...............484
Wheels .......................................... 488
Air conditioning filter ...............490
Electronic key battery .............. 492
Checking and replacing fuses .............................................. 494
Headlight aim .............................. 497
Light bulbs..................................... 499

448
GX460_OM_OM60T19U_(U)6-2. Maintenance
Maintenance requirements
General maintenance should be performed
on a daily basis. This can be done by
yourself or by a Lexus dealer.
Scheduled maintenance should be perfor med at specified intervals according to
the maintenance schedule.
For details about maintenance items and schedules, refer to the “Warranty and
Service Guide”, “Owner’s Manual Supplement” or “Scheduled Maintenance”.
You can perform some maintena nce procedures by yourself.
Please be aware that do-it-yourself maintenance may affect warranty coverage.
The use of Lexus repair manuals is recommended.
For details about warranty co verage, refer to the separate “Owner’s Guide”, “War-
ranty and Service Guide”, “Owner’s Manu al Supplement” or “Warranty Booklet”.
To ensure safe and economical driving, day-to-day care and regular mainte-
nance are essential. It is the owner’s re sponsibility to perform regular checks.
Lexus recommends the following maintenance:
General maintenance
Scheduled maintenance
Do-it-yourself maintenance

451
GX460_OM_OM60T19U_(U)6-2. Maintenance
6
Maintenance and care
General maintenance
Listed below are the general maintenanc
e items that should be performed at
the intervals specified in the “Warranty and Service Guide” or “Owner’s
Manual Supplement”. It is recommende d that any problem you notice should
be brought to the attention of your Lexu s dealer or qualified service shop for
advice.
Engine compartment
ItemsCheck points
BatteryCheck the connections. ( P. 468)
Brake fluidIs the brake fluid at the correct level? ( P. 465)
Engine coolantIs the engine coolant at the correct level? ( P. 463)
Engine oilIs the engine oil at the correct level? ( P. 461)
Exhaust systemThere should not be any fumes or strange sounds.
Power steering fluidIs the power steering fluid at the correct level?
( P. 467)
Radiator/condenserThe radiator and condenser should be free from
foreign objects. ( P. 465)
Washer fluidIs there sufficient washer fluid? ( P. 471)

454
GX460_OM_OM60T19U_(U)6-2. Maintenance
Emission inspection and maintenance (I/M) programs
The OBD system determines that a problem exists somewhere in the emission
control system. Your vehicle may not pass the I/M test and may need to be
repaired. Contact your Lexus dealer to service the vehicle.
●When the battery is disconnected or discharged
Readiness codes that are set duri
ng ordinary driving are erased.
Also, depending on your driving habits , the readiness codes may not be com-
pletely set.
●When the fuel tank cap is loose
The malfunction indicator lamp comes on indicating a temporary malfunction
and your vehicle may not pass the I/M test.
The error code in the OBD system will not be cleared unless the vehicle \
is driven
40 or more times.
Contact your Lexus dealer to pr epare the vehicle for re-testing.
Some states have vehicle emission inspection programs which include OBD
(On Board Diagnostics) checks. The OBD system monitors the operation of
the emission control system.
If the malfunction indicator lamp comes on
Your vehicle may not pass the I/M te st in the following situations:
When the malfunction indicator lamp still remains on after several driv-
ing trips
If your vehicle does not pass the I/M test

455
GX460_OM_OM60T19U_(U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Do-it-yourself service precautions
If you perform maintenance yourself, be sure to follow the correct procedures
as given in these sections.
ItemsParts and tools
Battery condition
(
 P. 468)•Warm water• Baking soda•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( P. 465)
• FMVSS No.116 DOT 3 or SAE J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant level
( P. 463)
• “Toyota Super Long Life Coolant” or similar high quality eth-
ylene glycol based non-silicate, non-amine, non-nitrite and
non-borate coolant with long-l ife hybrid organic acid tech-
nology.
For the U.S.A.:
“Toyota Super Long Life Coolan t” is pre-mixed with 50 %
coolant and 50 % deionized water.
For Canada:
“Toyota Super Long Life Coolant” is pre-mixed with 55 %
coolant and 45 % deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(  P. 461)
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P. 494)• Fuse with same amperage rating as original

GX460_OM_OM60T19U_(U)
4636-3. Do-it-yourself maintenance
6
Maintenance and careThe coolant level is satisfactory if it is between the “F” and “L” lines on the reser-
voir when the engine is cold.Reservoir cap
“F”
“L”
If the level is on or below the “L” line, add
coolant up to the “F” line.
WARNING
■Used engine oil
●Used engine oil contains potentially harm ful contaminants which may cause skin dis-
orders such as inflammation or skin canc er, so care should be taken to avoid pro-
longed and repeated contact. To remove used engine oil from your skin, wash
thoroughly with soap and water.
●Dispose of used oil and filters only in a sa fe and acceptable manner. Do not dispose of
used oil and filters in household trash, in sewers or onto the ground. Call your Lexus
dealer, service station or auto parts store for information concerning recycling or dis-
posal.
●Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is properly tightened.
Engine coolant
1
2
3

GX460_OM_OM60T19U_(U)
4836-3. Do-it-yourself maintenance
6
Maintenance and care
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning valves, transmitters and
tire valve caps
●When removing or fitting the wheels, tires or the tire pressure warning valves and
transmitters, contact your Lexus dealer as the tire pressure warning valves and trans-
mitters may be damaged if not handled correctly.
●Make sure to install the tire valve caps. If the tire valve caps are not installed, water
could enter the tire pressure warning valves and the tire pressure warning valves
could be bound.
●When replacing tire valve caps, do not use tire valve caps other than those specified.
The cap may become stuck.
■To avoid damage to the tire pressu re warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-
mitter may not operate properly. If a liquid sealant is used, contact your Lexus dealer or
other qualified service shop as soon as possible. Make sure to replace the tire pressure
warning valve and transmitter when replacing the tire. ( P. 473)
■Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.
These conditions may cause lo sses in tire inflation pressure, reducing the cushioning
ability of the tires. In addition, driving on rough roads may cause damage to the tires
themselves, as well as the vehicle’s wheels and body.
■If tire inflation pressure of ea ch tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

GX460_OM_OM60T19U_(U)
4896-3. Do-it-yourself maintenance
6
Maintenance and care
WARNING
■When replacing wheels
●Do not use wheels that are a different size from those recommended in the Owner’s
Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leaking wheel which is designed for a tubeless tire. Doing
so may result in an accident, causing death or serious injury.
■Use of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air during driving, possibly causing an accident.
NOTICE
■Replacing tire pressure warning valves and transmitters
●Because tire repair or replacement may affe ct the tire pressure warning valves and
transmitters, make sure to have tires serviced by your Lexus dealer or other qualified
service shop. In addition, ma ke sure to purchase your tire pressure warning valves
and transmitters at your Lexus dealer.
●Ensure that only genuine Lexus wh eels are used on your vehicle.
Tire pressure warning valves and transmitte rs may not work properly with non-genu-
ine wheels.