2016 Lexus GX460 brake

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GX460_OM_OM60M73U_(U)6-1. Maintenance and care
NOTICE
■To prevent paint deterioration and corrosio
n on the body and components (aluminum
wheels etc.)
●Wash the vehicle immediately 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 droppings 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 gaso line are spilled on the paint surface
●If the paint is chipped or scratched, have it repaired immediately.
●To prevent the wheels from corroding, remo ve any dirt and store in a place with low
humidity when storing wheels.
■Cleaning the exterior lights
●Wash carefully. Do not use organic substances or scrub with a hard brush.
This may damage the su rfaces 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 ma y be damages if they come into contact
with high-pressure water.
●Traction related parts
●Steering parts
●Suspension parts
●Brake parts

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GX460_OM_OM60M73U_(U)6-2. Maintenance
6
Maintenance and care
General maintenance
Listed below are the general maintenance 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. 464)
Brake fluidIs the brake fluid at the correct level? ( P. 4 6 1 )
Engine coolantIs the engine coolant at the correct level? (P. 4 5 9 )
Engine oilIs the engine oil at the correct level? ( P. 4 5 7 )
Exhaust systemThere should not be any fumes or strange sounds.
Power steering fluidIs the power steering fluid at the correct level?
( P. 4 6 3 )
Radiator/condenserThe radiator and condenser should be free from
foreign objects. ( P. 4 6 1 )
Wa s h e r f l u i dIs there sufficient washer fluid? ( P. 4 6 7 )

448
GX460_OM_OM60M73U_(U)6-2. Maintenance
Vehicle interior
ItemsCheck points
Accelerator pedal• The accelerator pedal should move smoothly
(without uneven pedal effort or catching).
Automatic transmission
“Park” mechanism• When parked on a slope and the shift lever is in P, isthe vehicle securely stopped?
Brake pedal
• Does the brake pedal move smoothly?
• Does the brake pedal have appropriate clearance
from the floor? ( P. 5 6 9 )
• Does the brake pedal have the correct amount of
free play? ( P. 5 6 9 )
Brakes
• The vehicle should not pull to one side when the
brakes are applied.
• The brakes should work effectively.
• The brake pedal should not feel spongy.
• The brake pedal should not get too close to the floor when the brakes are applied.
Head restraints• Do the head restraints move smoothly and lock
securely?
Indicators/buzzers• Do the indicators and buzzers function properly?
Lights• Do all the lights come on?
• Are the headlights aimed correctly? ( P. 4 8 9 )
Parking brake• Does the parking brake pedal move smoothly?
• When parked on a slope and the parking brake is on,
is the vehicle securely stopped?
Seat belts•Do the seat belt s operate smoothly?
• The seat belts should not be damaged.
Seats• Do the seat controls operate properly?
Steering wheel
• Does the steering wheel rotate smoothly?
• Does the steering wheel have the correct amount of free play?
• There should not be an y strange sounds coming
from the steering wheel.

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GX460_OM_OM60M73U_(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.
ItemsPa r t s a n d t o o l s
Battery condition
(
 P. 464)•Warm water• Baking soda•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( P. 4 6 1 )
• 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. 4 5 9 )
• “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-life hybrid organic acid tech-
nology.
For the U.S.A.:
“Toyota Super Long Life Coolant” 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. 4 5 7 )
• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P. 4 8 6 )• Fuse with same amperage rating as original

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GX460_OM_OM60M73U_(U)6-3. Do-it-yourself maintenance
6
Maintenance and care
Engine compartment
Power steering fluid reservoir
(P. 4 6 3 )
Engine oil level dipstick (P. 4 5 7 )
Engine oil filler cap ( P. 4 5 8 )
Brake fluid reservoir ( P. 4 6 1 )
Fuse box ( P. 4 8 6 ) Battery
( P. 464)
Radiator ( P. 4 6 1 )
Condenser ( P. 4 6 1 )
Cooling fans
Engine coolant reservoir (P. 4 5 9 )
Wa s h e r f l u i d t a n k ( P. 4 6 7 )1
2
3
4
5
6
7
8
9
10
11

GX460_OM_OM60M73U_(U)
4616-3. Do-it-yourself maintenance
6
Maintenance and care
Check the radiator and condenser and clear any foreign objects.
If either of the above parts is extremely dirty or you are not sure of their condi-
tion, have your vehicle checked by your Lexus dealer.
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN” lines
on the tank.
■Adding fluid
Make sure to check the fluid type and prepare the necessary item.
Radiator and condenser
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause serious injuries,
such as burns.
Brake fluid
Fluid typeFMVSS No.116 DOT 3 or SAE J1703 brake fluid
ItemsClean funnel

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GX460_OM_OM60M73U_(U)6-3. Do-it-yourself maintenance
■Brake fluid can absorb moisture from the air
Excess moisture in the fluid can cause a dangerous loss of braking efficiency. Use only
newly opened brake fluid.
CAUTION
■When filling the reservoir
Take care because brake fluid can harm yo
ur hands or eyes and damage painted sur-
faces. If fluid gets on your eyes, flush the affected area with clean water immediately. If
you still experience discomfort, see a doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads wear or when
the fluid level in the accumulator is high. If the reservoir needs frequent refilling, it may
indicate a serious problem.

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GX460_OM_OM60M73U_(U)
7
When trouble arises
7-1. Essential information
If your vehicle has to be stopped in an emergency
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort required to
slow the vehicle.
Shift the shift lever to N.
If the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the engine.
If the shift lever cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle speed as
much as possible.
To stop the engine, press and hold
the engine switch for 2 consecutive
seconds or more, or press it briefly 3
times or more in succession.
Stop the vehicle in a safe place by the road.
Only in an emergency, such as if it becomes impossible to stop the vehicle in
the normal way, stop the vehicle using the following procedure:
1
2
3
4
3
Press and hold for 2 seconds or more,
or press briefly 3 times or more
4
CAUTION
■If the engine has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the brake pedal
harder to depress and the steering wheel heavier to turn. Decelerate as much as possi-
ble before turning off the engine.
5