brake fluid LEXUS LS500H 2018 Owners Manual

15Pictorial index
LS500h_OM_OM50F42U_(U) Parking brake switch .............................................................................................. P.181
Applying/releasing the parking brake........................................................................P.181
Precautions for winter season .. .................................................................................... P.310
Warning buzzer/messages.......................................................................................... P.437
Turn signal lever ..................................................................................................... P.180
Headlight switch......................................................................................................P.185
Headlights/parking lights/tail lights/daytime ru nning lights ........................... P.185
AHB (Automatic High Beam)............................ .......................................................... P.188
Windshield wiper and washer switch ................................................................P.190
Usage.......................................................................................................................... ............ P.190
Adding washer fluid ......................................................................................................... P.3 92
Warning messages .......................................................................................................... P.437
Emergency flasher switch .................................................................................. P.420
Hood lock release lever ...................................................................................... P.385
Tilt and telescopic steering contro l switch...... ............ .............. .................... .. P.147
Adjustment ............................................................................................................................P.147
Driving position memory ................................................................................................ P.139
Air conditioning system ...................................................................................... P.323
Usage.......................................................................................................................... ........... P.323
Rear window defogger................................................................................................... P.323
Audio system *
Brake hold switch ....................................................................................................P.183
Trunk opener main switch ..................................................................................... P.118 *
: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”. E
F
G
H
I
J
K
L
M
N

892-1. Instrument cluster
LS500h_OM_OM50F42U_(U) 2
Vehicle status information and indicators may not be updated.■
G-force (F SPORT models)
Displays lateral G-forces on the vehi-
cle. Also displays, around the periph-
ery of the G-force display, the left and
right steering amount, accelerator
pedal input, and brake fluid pressure.
Acceleration G-force on the vehi-
cle
Current G-force value (analyzed
value of front/rear and left/right
G-forces)
Record of the maximum G-forces
Accelerator pedal input
Brake fluid pressure
Steering amountThis display is intended for use as a guide-
line. Depending on factors such as the road
surface condition, temperature and vehicle
speed, the display may not show the actual
condition of the vehicle.
 Resetting the record of maximum
G-forces Press and hold of the meter control
switch to reset the record.
 Peak hold function If lateral G-forces of 0.5 G or greater are
generated, the G-forc e value display will turn amber and be held for 2 seconds. ■
Gear Position (F SPORT models)
Displays the current shift range or gear
position when the shift position is in D
or M. ■
Units (F SPORT models)
The units of measure used can be
changed while driving. Unlike the units sett ing performed on the
settings display, th e units setting per-
formed on the drive information display
can be changed while driving.■
Vehicle sway warning
Detects the sway of the vehicle within a
lane, which is often associated with a
decrease in the driver’s attention level,
and displays the decrease in attention
using a bar display.
The shorter the bar length, the more
the driver may need to rest. ■
Vehicle sway warning
This display is enable d when the operating
conditions of the vehicle sway warning of
the LTA ( → P.236) or LKA ( → P.244) are
met.
Select to display the following naviga-
tion system-linked information.
 Route guidance to destination
 Compass display (heading-up dis-
play) ■
Route guidance to destination display
When the route guidance to destination
display is enabled on th e head-up display, it A
B
C
D
E
F
Navigation system-linked dis-
play (if equipped)

1634-1. Before driving
LS500h_OM_OM50F42U_(U) 4
Driving NOTICE■
When driving the vehicle●
Do not depress the accelerator and
brake pedals at the same time during
driving, as this may restrain the hybrid
system output.●
Do not use the accelerator pedal or
depress the accelerator and brake
pedals at the same time to hold the
vehicle on a hill.■
When parking the vehicle
Always set the parking brake, and shift
the shift position to P. Failure to do so
may cause the vehicle to move or the
vehicle may accelerate suddenly if the
accelerator pedal is accidentally
depressed. ■
Avoiding damage to vehicle parts●
Do not turn the steering wheel fully in
either direction and hold it there for an
extended period of time.
Doing so may damage the power
steering motor.●
When driving over bumps in the road,
drive as slowly as possible to avoid
damaging the wheels, underside of the
vehicle, etc.
■
If you get a flat tire while driving
A flat or damaged ti re may cause the fol-
lowing situations. Hold the steering
wheel firmly and gradually depress the
brake pedal to slow down the vehicle.
●
It may be difficult to control your vehi-
cle.
●
The vehicle will make abnormal
sounds or vibrations.
●
The vehicle will lean abnormally.
Information on what to do in case of a flat
tire ( → P.442) ■
When encountering flooded roads
Do not drive on a road that has flooded
after heavy rain etc. Doing so may cause
the following serious damage to the vehi-
cle: ●
Engine stalling ●
Short in electrical components ●
Engine damage caused by water
immersion
In the event that you drive on a flooded
road and the vehicle is flooded, be sure
to have your Lexus dealer check the fol-
lowing: ●
Brake function ●
Changes in quantity and quality of oil
and fluid used for the engine, hybrid
transmission, transfer (AWD models),
differential, etc. ●
Lubricant condition for the propeller
shaft, bearings and suspension joints
(where possible), and the function of
all joints, bearings, etc.
If the shift control system is damaged by
flooding, it may not be possible to shift
the shift position to P, or from P to other
positions. In this case, contact your Lexus
dealer.
■
When parking the vehicle
Always set the parking brake, and shift
the shift position to P. Failure to do so
may cause the vehicle to move or the
vehicle may accelerate suddenly if the
accelerator pedal is accidentally
depressed.

1754-2. Driving procedures
LS500h_OM_OM50F42U_(U) 4
Driving ■
Reverse warning buzzer
When shifting into R, a buzzer will sound to
inform the driver that the shift position is in
R. ■
To protect the hybrid transmission
If the transmission fluid temperature is high,
“Transmission Fluid Temp High See
Owner’s Manual” will be displayed on the
multi-information display and the vehicle
will go into transmission protection mode
automatically. Have the vehicle inspected
by your Lexus dealer. ■
When driving with the dynamic radar
cruise control with full-speed range
activated
Even when performing the following
actions with the intent of enabling engine
braking, engine braking will not be acti-
vated because the dynamic radar cruise
control with full-spe ed range will not be
canceled. ●
While driving in the D position, down-
shifting to 9, 8, 7, 6, 5 or 4.●
When switching the driving mode to
sport mode while driving in the D position
( → P.298)■
Restraining sudden start (Drive-Start
Control)
→ P.159■
AI-SHIFT
The AI-SHIFT automatica lly selects the suit-
able gear according to driver performance
and driving conditions.
The AI-SHIFT automatically operates when
the shift position is in D. (Shifting the shift
position to the M position cancels the func-
tion.)
■
If a message about a shift operation is
shown
To prevent the shift position from being
selected incorrectly or the vehicle from
moving unexpectedly, the shift position may
be changed automatically or operating the
shift lever may be required. In this case,
change the shift positi on following the mes-
sages on the multi- information display. ■
After recharging/reconnecting the
12-volt battery
→ P.393 ■
Customization
Some functions can be customized.
( → P.481)
WARNING■
When driving on slippery road sur-
faces
Do not accelerate or shift the shift posi-
tion suddenly.
Sudden changes in engine braking may
cause the vehicle to sp in or skid, resulting
in an accident.
NOTICE■
Hybrid battery (t raction battery)
charge
If the shift position is in N, the hybrid bat-
tery (traction battery) will not be
charged. To help prevent the battery
from discharging, avoid leaving the N
position selected for an extended period
of time. ■
Situations where sh ift control system
malfunctions are possible
If any of the following situations occurs,
shift control system malfunctions are
possible.
Immediately stop the vehicle in a safe
place on level ground, apply the parking
brake, and then contact your Lexus
dealer.
●
When the warning message indicating
the shift control system appears on the
multi-information display.
●
The display indicates that no shift posi-
tion is selected for more than a few
seconds.

3796-2. Maintenance
LS500h_OM_OM50F42U_(U) 6
Maintenance and care 3 Press or to select “Scheduled
Maintenance” and then press .
4 Press or to select “Yes” and
then press .
A message will be displayed on the
multi-information disp lay when the reset
procedure has been completed.
You can perform some maintenance
procedures by yourself.
Please be aware that do-it-yourself
maintenance may affect warranty cov-
erage. The use of Lexus repair manuals is recom-
mended.
For details about warra nty coverage, refer
to the separate “Owner’s Guide”, “War-
ranty and Service Guide”, “Owner’s Man-
ual Supplement” or “Warranty Booklet”.Do-it-yourself maintenance General maintenance Listed below are the general main-
tenance items that should be per-
formed at the intervals specified in
the “Warranty and Service Guide”
or “Owner’s Manual Supplement”.
It is recommended that any prob-
lem you notice should be brought to
the attention of your Lexus dealer
or qualified service shop for advice. WARNING■
If the hybrid system is operating
Turn the hybrid system off and ensure
that there is adequate ventilation before
performing maintenance checks.
Engine compartment Items Check points
Brake fluid Is the brake fluid at the
correct level?
( → P.391)
Engine/power
control unit cool-
ant Is the engine/power
control unit coolant at
the correct level?
( → P.390)
Engine oil Is the engine oil at the
correct level?
( → P.388)
Exhaust system There should not be
any fumes or strange
sounds.

380 6-2. Maintenance
LS500h_OM_OM50F42U_(U) Radiator/con-
denser The radiator and con-
denser should be free
from foreign objects.
( → P.391)
Washer fluid Is there sufficient
washer fluid?
( → P.392)
Trunk Items Check points
12-volt battery Check the connec-
tions. ( → P.393)
Vehicle interior Items Check points
Accelerator
pedal • The accelerator
pedal should move
smoothly (without
uneven pedal effort
or catching).
Hybrid transmis-
sion “Park” mech-
anism •When parked on a
slope and the shift
position is in P, is the
vehicle securely
stopped?
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? Items Check points
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?
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.Items Check points

3836-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(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
12-volt battery
condition
( → P.393) •Grease
• Conventional
wrench (for terminal
clamp bolts)
Brake fluid level
( → P.391) • 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/power
control unit cool-
ant level
( → P.390) •“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.388) •“Toyota Genuine
Motor Oil” or equiv-
alent
• Rag or paper towel
•Funnel (used only for
adding engine oil)
Fuses ( → P.414) •Fuse with same
amperage rating as
original
Radiator and con-
denser ( → P.391) ⎯Items Parts and tools

3876-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U) 6
Maintenance and care
Engine oil level dipstick ( → P.388)
Power control unit coolant reservoir ( → P.390)
Engine coolant reservoir ( → P.390)
Engine oil filler cap ( → P.389)
Brake fluid reservoir ( → P.391)
Fuse boxes ( → P.414)
Washer fluid tank ( → P.392)
Engine coolant radiator ( → P.391)
Power control unit coolant radiator ( → P.391)
Electric cooling fan
Condenser ( → P.391)■
12-volt battery
→ P.393Engine compartment
Components
A
B
C
D
E
F
G
H
I
J
K

3916-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U) 6
Maintenance and care cold.
Reservoir cap
“F” line
“L” lineIf the level is on or below the “L” line, add
coolant up to the “F” line. ( → P.453)
■
Coolant selection
Only use “Toyota Super Long Life Coolant”
or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite,
and non-borate coolant with long-life
hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mix-
ture of 50% coolant and 50% deionized
water. (Minimum temperature: -31°F
[-35°C])
Canada:
“Toyota Super Long Life Coolant” is a mix-
ture of 55% coolant and 45% deionized
water. (Minimum temperature: -44°F
[-42°C])
For more details about coolant, contact
your Lexus dealer.
■
If the coolant level drops within a short
time of replenishing
Visually check the radiator, hoses,
engine/power control unit coolant reservoir
caps, drain cock and water pump.
If you cannot find a leak, have your Lexus
dealer test the cap and check for leaks in
the cooling system. Check the radiator and condenser and
clear away any foreign objects. If either
of the above parts is extremely dirty or
you are not sure of their condition,
have your vehicle inspected by your
Lexus dealer.
■
Checking fluid level
The brake fluid level should be A
B
C WARNING■
When the hybrid system is hot
Do not remove the en gine/power control
unit coolant reservoir caps. ( → P.456)
The cooling system may be under pres-
sure and may spray hot coolant if the cap
is removed, causing serious injuries, such
as burns.
NOTICE■
When adding coolant
Coolant is neithe r plain water nor
straight antifreeze. The correct mixture
of water and antifreeze must be used to
provide proper lubrication, corrosion
protection and cooling. Be sure to read
the antifreeze or coolant label. ■
If you spill coolant
Be sure to wash it off with water to pre-
vent it from damaging parts or paint.
Checking the radiator and con-
denser
WARNING
■
When the hybrid system is hot
Do not touch the radiator or condenser
as they may be hot and cause serious
injuries, such as burns.
Checking and adding the brake
fluid

392 6-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U) 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 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 hybrid
system is hot or operating as washer fluid
contains alcohol and may catch fire if
spilled on the engine, etc.
NOTICE
■
Do not use any fluid other than
washer fluid
Do not use soapy water or engine anti-
freeze instead of washer fluid.
Doing so may cause streaking on the
vehicle’s painted surfaces, as well as
damaging the pump leading to problems
of the washer fluid not spraying.