2018 LEXUS LS500 brake

370 6-2. Maintenance
LS500_OM_OM50F54U_(U) Radiator, con-
denser, inter-
cooler radiator
and intercooler
sub radiator The radiator, con-
denser, intercooler
radiator and inter-
cooler sub radiator
should be free from
foreign objects.
( → P.382)
Washer fluid Is there sufficient
washer fluid?
( → P.383)
Trunk Items Check points
Battery Check the connec-
tions. ( → P.384)
Vehicle interior Items Check points
Accelerator
pedal • The accelerator
pedal should move
smoothly (without
uneven pedal effort
or catching).
Automatic trans-
mission “Park”
mechanism •When parked on a
slope and the shift
position is in P, is the
vehicle securely
stopped?Items Check points
Brake pedal •Does the brake
pedal move
smoothly?
•Does the brake
pedal have appro-
priate clearance
from the floor?
•Does the brake
pedal have the cor-
rect amount of free
play?
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/buzz-
ers •Do the indicators
and buzzers function
properly?
Lights • Do all the lights
come on?Items Check points

3716-2. Maintenance
LS500_OM_OM50F54U_(U) 6
Maintenance and care Parking brake • Does the parking
brake operate nor-
mally?
•When parked on a
slope and the park-
ing brake is on, is the
vehicle securely
stopped?
Seat belts • Do the seat belts
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 cor-
rect amount of free
play?
•There should not be
any strange sounds
coming from the
steering wheel.
Vehicle exterior Items Check points
Doors/trunk • Do the doors/trunk
operate smoothly?
Engine hood •Does the engine
hood lock system
work properly?
Fluid leaks •There should not be
any signs of fluid
leakage after the
vehicle has been
parked.Items Check points
Tires • Is the tire inflation
pressure correct?
• The tires should not
be damaged or
excessively worn.
• Have the tires been
rotated according to
the maintenance
schedule?
•The wheel nuts
should not be loose.
Windshield wip-
ers • The wiper blades
should not show any
signs of cracking,
splitting, wear, con-
tamination or defor-
mation.
• The wiper blades
should clear the
windshield without
streaking or skip-
ping.Items Check points

3736-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) 6
Maintenance and care 6-3.Do-it-yourself maintenance
Do-it-yourself service pre-
cautions If you perform maintenance by
yourself, be sure to follow the cor-
rect procedure as given in these
sections.
Maintenance Items Parts and tools
Battery condition
( → P.384) •Grease
• Conventional
wrench (for terminal
clamp bolts)
Brake fluid level
( → P.383) • FMVSS No.116 DOT
3 or SAE J1703
brake fluid
FMVSS No.116 DOT
4 or SAE J1704
brake fluid
•Rag or paper towel
• Funnel (used only for
adding brake fluid) Engine/inter-
cooler coolant
level ( → P.381) •“Toyota Super Long
Life Coolant” or a
similar high quality
ethylene gly-
col-based non-sili-
cate, 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.379) •“Toyota Genuine
Motor Oil” or equiv-
alent
• Rag or paper towel
•Funnel (used only for
adding engine oil)
Fuses ( → P.405) •Fuse with same
amperage rating as
original
Radiator, con-
denser, inter-
cooler radiator
and intercooler
sub radiator
( → P.382) ⎯Items Parts and tools

3776-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) 6
Maintenance and care
Fuse boxes ( → P.405)
Engine oil filler cap ( → P.380)
Engine coolant reservoir ( → P.381)
Intercooler coolant reservoir ( → P.381)
Engine oil level dipstick ( → P.379)
Brake fluid reservoir ( → P.383)
Washer fluid tank ( → P.383)
Radiator ( → P.382)
Intercooler radiator ( → P.382)
Electric cooling fan
Condenser ( → P.382)
Intercooler sub radiator ( → P.382)For AWD models:
The engine oil level dipstick is locate d on the opposite side of the engine.Engine compartment
Components
A
B
C
D
E
F
G
H
I
J
K
L

3836-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) 6
Maintenance and care ■
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.
 Fluid type FMVSS No.116 DOT 3 or SAE J1703
brake fluid
FMVSS No.116 DOT 4 or SAE J1704
brake fluid
 Item Clean funnel
■
Brake fluid can absorb moisture from
the air
Excess moisture in the brake fluid can cause
a dangerous loss of braking efficiency. Use
only newly opened brake fluid. If any washer does not work or the
warning message appears on the
multi-information display, the washer
tank may be empty. Add washer fluid.WARNING■
When the engine is hot
Do not touch the radiator, condenser,
intercooler radiator or intercooler sub
radiator as they may be hot and cause
serious injuries, such as burns.
Checking and adding the brake
fluid WARNING■
When filling the reservoir
Take care as brake fluid can harm your
hands and eyes and damage painted sur-
faces.
If fluid gets on your hands or in 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 out
or when the fluid leve l in the accumulator
is high.
If the reservoir need s frequent refilling,
there may be a serious problem.
Adding the washer fluid
WARNING
■
When adding washer fluid
Do not add washer fluid when the engine
is hot or running as washer fluid contains
alcohol and may catch fire if spilled on
the engine, etc.

396 6-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U)  Stop the vehicle in a safe place on a
hard, flat surface.
 Set the parking brake.
 Shift the shift position to P.
 Disabling the height control. (if
equipped) ( → P.293)
 Stop the engine. ■
Jack and tools
As your vehicle is equipped with run-flat
tires, the following tools for replacing a tire
are not included with your vehicle. They can
be purchased at your Lexus dealer. ●
Wheel nut wrench●
Jack●
Jack handleReplacing the tire When raising your vehicle with a
jack, position the jack correctly.
Improper placement may damage
your vehicle or cause injury.
If necessary tire replacement
seems difficult to perform, contact
your Lexus dealer.
Before jacking up the vehicle WARNING■
Using the tire jack
Observe the following precautions.
Improper use of the tire jack may cause
the vehicle to suddenly fall off the jack,
leading to death or serious injury. ●
Do not use the tire jack for any pur-
pose other than replacing tires or
installing and removing tire chains. ●
Do not use other tire jacks for replac-
ing tires on this vehicle. ●
Put the jack properly in its jack point. ●
Do not put any part of your body under
the vehicle while it is supported by the
jack. ●
Do not start the engine or drive the
vehicle while the vehicle is supported
by the jack. ●
Do not raise the vehicle while some-
one is inside. ●
When raising the vehicle, do not put an
object on or under the jack. ●
Do not raise the vehicle to a height
greater than that required to replace
the tire. ●
Use a jack stand if it is necessary to get
under the vehicle. ●
Make sure to disable all functions of
the vehicle height control of the elec-
tronically modulated air suspension
and then stopping the engine.
( → P.293)●
When lowering the vehicle, make sure
that there is no-one near the vehicle. If
there are people nearby, warn them
vocally before lowering.

398 6-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) avoid scratching the wheel surface.
1 Remove any dirt or foreign matter
from the wheel contact surface.If foreign matter is on the wheel contact
surface, the wheel nuts may loosen while
the vehicle is in motion, causing the tire to
come off.
2 Install the tire and loosely tighten
each wheel nut by hand by approxi-
mately the same amount.
Turn the wheel nuts until the washers come into contact with the disc wheel.
Disc wheel
Washer
3 Lower the vehicle.
4 Firmly tighten each wheel nut two
or three times in the order shown in
the illustration.
Tightening torque:
103 ft•lbf (140 N•m, 14.3 kgf•m)WARNING■
Replacing a tire
Do not touch the disc wheels or the area
around the brakes immediately after the
vehicle has been driven.
After the vehicle has been driven the disc
wheels and the area around the brakes
will be extremely hot. Touching these
areas with hands, feet or other body
parts while changing a tire, etc. may
result in burns.
Installing the tire A
B

410 7-1. Essential information
LS500_OM_OM50F54U_(U) 7-1.Essential information
Press the switch to flash all of the turn
signal lights. To turn them off, press the switch once
again.
■
Emergency flashers●
If the emergency flashers are used for a
long time while the engine is not running,
the battery may discharge.●
If any of the SRS airbags deploy (inflate)
or in the event of a strong rear impact, the
emergency flashers will turn on automati-
cally.
The emergency flashers will turn off auto-
matically after operating for approxi-
mately 20 minutes. To manually turn the
emergency flashers off, press the switch
twice.
(The emergency flashers may not turn on
automatically depending on the force of
the impact and conditions of the colli-
sion.) 1 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.
2 Shift the shift position to N. 
If the shift position is shifted to N
3 After slowing down, stop the vehi-
cle in a safe place by the road.
4 Stop the engine. 
If the shift position cannot be shifted
to N
3 Keep depressing the brake pedal
with both feet to reduce vehicle
speed as much as possible.
4 To stop the engine, press and hold
the engine switch for 2 consecutive Emergency flashers The emergency flashers are used to
warn other drivers when the vehicle
has to be stopped on the road due
to a breakdown, etc.
Operating instructions If your vehicle has to be
stopped in an emergency Only in an emergency, such as if it
becomes impossible to stop the
vehicle in the normal way, stop the
vehicle using the following proce-
dure:
Stopping the vehicle