brake sensor LEXUS LS500H 2018 Owner's Guide

3716-1. Maintenance and care
LS500h_OM_OM50F42U_(U) 6
Maintenance and care ■
Brake caliper coating (F SPORT mod-
els)●
When using detergent, use neutral deter-
gent. Do not use hard brushes or abra-
sive cleaners, as they will damage the
coating.●
Do not use detergent on the brake cali-
pers when they are hot.●
Wash detergent off immediately after
use.■
Bumpers and side moldings
Do not scrub with abrasive cleaners. ■
Front side windows water-repellent
coating (if equipped)●
The following precautions can extend the
effectiveness of the water-repellent coat-
ing.
• Remove any dirt, etc. from the front side
windows regularly.
• Do not allow dirt and dust to accumulate
on the windows for a long period.
Clean the windows with a soft, damp
cloth as soon as possible.
• Do not use wax or glass cleaners that
contain abrasives when cleaning the win-
dows.
• Do not use any metallic objects to
remove condensation build up.●
When the water-repellent performance
has become insufficie nt, the coating can
be repaired. Contact your Lexus dealer.■
Plated portions
If dirt cannot be removed, clean the parts as
follows: ●
Use a soft cloth dampened with an
approximately 5% solution of neutral
detergent and water to clean the dirt off.
●
Wipe the surface with a dry, soft cloth to
remove any remaining moisture.
●
To remove oily deposits, use alcohol wet
wipes or a similar product. WARNING■
When washing the vehicle
Do not apply water to the inside of the
engine compartment. Doing so may
cause the electrical components, etc. to
catch fire. ■
When cleaning the windshield
Set the wiper switch to off.
If the wiper switch is in “AUTO”, the wip-
ers may operate unexpectedly in the fol-
lowing situations, and may result in hands
being caught or other serious injuries
and cause damage to the wiper blades.
Off
AUTO ●
When the upper part of the windshield
where the raindrop sensor is located is
touched by hand
●
When a wet rag or similar is held close
to the raindrop sensor
●
If something bumps against the wind-
shield
●
If you directly touch the raindrop sen-
sor body or if something bumps into
the raindrop sensor
■
Precautions regarding the exhaust
pipes
Exhaust gasses cause the exhaust pipes
to become quite hot.
When washing the vehicle, be careful not
to touch the pipes until it has cooled suffi-
ciently, as touching a hot exhaust pipes
can cause burns. A
B

4337-2. Steps to take in an emergency
LS500h_OM_OM50F42U_(U) 7
When trouble arises ■
PKSB OFF indicator (warning buzzer)
■
PCS warning light (warning buzzer)
■
Slip indicator Warning light Details/Actions
(flashes) When a buzzer sounds:
Indicates a malfunction in the PK SB (Parking Support Brake) system
→ Have the vehicle inspected by your Lexus dealer immediately.
When a buzzer does not sound:
Indicates that the system is temporarily unavailable, possibly due to a
sensor being dirty or covered with ice, etc.
→ Follow the instructions displayed on the multi-information display.
( → P.284, 437)
Warning light Details/Actions
(flashes or illumi-
nates) Indicates a malfunction in the PCS (Pre-Collision System) or that the
system is temporarily unavailable due to the vehicle being extremely
hot/cold, or dirt around a front sensor, etc.
→ Follow the instructions displayed on the multi-information display.
( → P.219, 226, 440)
If the PCS (Pre-Collision System) or VSC (Vehicle Stability Control)
system is disabled, the PCS warning light will illuminate.
→ P.219, 226
Warning light Details/Actions
Indicates a malfunction in:
 The VSC system;
 The TRAC system;
 The hill-start assist control system;
 The VGRS system (if equipped); or
 The DRS system (if equipped)
→ Have the vehicle inspected by your Lexus dealer immediately.

434 7-2. Steps to take in an emergency
LS500h_OM_OM50F42U_(U) ■
Parking brake indicator
■
Brake hold operated indicator (warning buzzer)
■
Master warning light (warning buzzer)
■
Warning buzzer
In some cases, the bu zzer may not be heard
due to being in a noisy location or audio
sound.
■
Front passenger detection sensor, seat
belt reminder and warning buzzer
●
If luggage is placed on the front passen-
ger seat, the front passenger detection
sensor may cause th e warning light to
flash and the warning buzzer to sound
even if a passenger is not sitting in the
seat.
●
If a cushion is placed on the seat, the sen-
sor may not detect a passenger, and the
warning light may not operate properly.
■
SRS warning light
This warning light system monitors the air- bag sensor assembly, Pop Up Hood com-
puter assembly, front impact sensors, side
impact sensors (front door), side impact
sensors (front), side impact sensors (rear),
driver’s seat position sensor, driver’s seat
belt buckle switch, front passenger occu-
pant classification system (ECU and sen-
sors), rear seat belt buckle switches (if
equipped), “AIR BAG ON” indicator light,
“AIR BAG OFF” indicator light, front pas-
senger’s seat belt buckle switch, seat belt
pretensioners, airbags, interconnecting wir-
ing and power sources. ( → P.29)
■
If the malfunction indicator lamp comes
on while driving
First check the following:
●
Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●
Is the fuel tank cap loose?Warning light Details/Actions(flashes)
(U.S.A.)
or (flashes)
(Canada) Indicates a malfunction in the parking brake system
→ Have the vehicle inspected by your Lexus dealer immediately.
Warning light Details/Actions(flashes)
Indicates a malfunction in the brake hold system
→ Have the vehicle inspected by your Lexus dealer immediately.
Warning light Details/Actions
A buzzer sounds and the warning light comes on and flashes to indicate
that the master warning system has detected a malfunction.
→ P.437

5091-1. What to do if... (Troubleshooting)
LS500h_OM_OM50F42U_(U) 509What to do if... (Troubleshooting)
( → P.447)
 It is locked automatically to prevent
theft of the vehicle. ( → P.169)
 Is the window lock switch pressed? The power window except for the one at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( →
P.153 )
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY mode for a period of
time. ( → P.171)
 The seat belt reminder light is flash-
ing Are the driver and the front passenger
wearing the seat belts? ( →
P.430 )
 The parking brake indicator is on Is the parking brake released? ( →
P.181 )
Depending on the situation, other
types of warning buzzer may also
sound. ( → P.427, 437)  Did anyone inside the vehicle open
a door during setting the alarm? The sensor detects it and the alarm sounds.
( →
P.68 )
Do one of the following to deactivate
or stop the alarms:
 Unlock the doors.
 Turn the power switch to ACCES-
SORY or ON mode, or start the
hybrid system. (The alarm will be
deactivated or stopped after a few
seconds.)
 Is the message displayed on the
multi-information display? Check the message on the multi-informa-
tion display. ( →
P.437 )
 When a warning light turns on or a
warning message is displayed, refer
to P.427, 437.
 Slow down the vehicle, drive with The steering wheel cannot be
turned after the hybrid system is
stopped
The windows do not open or
close by operating the power
window switches
The power switch is turned off
automatically
A warning buzzer sounds during
driving An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred If you have a flat tire

518 Alphabetical Index
LS500h_OM_OM50F42U_(U) Meter control switches .............................. 87
Navigation system-linked display ........ 89
Pop-up display............................................... 86
Settings .............................................................. 90
Suggestion function....................................... 91
Tire pressure ................................................ 397
Units .................................................................... 89
Vehicle sway warning ................................ 89
Warning message..................................... 437 N
Navigation system-linked display....89, 92
Noise from under vehicle ...............................6 O
“ODO TRIP”switch ............................... 79, 85
Odometer ................................................. 79, 84
Odometer and trip meter display
Display items .......................................... 79, 84
“ODO TRIP” switch ........................... 79, 85
Pop-up display...................................... 79, 85
Oil
Engine oil ....................................................... 462
Front differential oil ...................................465
Rear differential oil ....................................465
Opener
Fuel filler door................................................194
Hood............................................................... 385
Trunk ....................................................................114
Outer foot lights
Location..........................................................340
Outside door handle lights...................... 340
Outside rear view mirrors
Adjustment......................................................149
BSM (Blind Sport Monitor) .................260
Folding ............................................................. 150
Linked mirror functi on when reversing
...........................................................................149
Mirror position memory...........................139
Outside rear view mirror defoggers324
RCTA function ............................................ 273 Outside temperature..............................77, 81
Overheating .................................................. 453 P
Paddle shift switches .......................... 178, 179
Panic mode ..................................................... 106
Parking assist sensors (intuitive parking
assist) ............................................................. 266
Parking brake
Operation ......................................................... 181
Parking brake engaged warning buzzer
........................................................................... 182
Warning light ...............................................434
Warning message ...................................... 182
Parking lights
Light switch .................................................... 185
Replacing light bulbs ..................................417
Parking Support Brake function (for
rear-crossing vehicles) ............................291
Function ............................................................291
Parking Support Brake function (rear
pedestrians) .................................... 280, 295
Function ..........................................................295
Parking Support Brake function
(rear-crossing vehicles).........................280
Parking Support Brake function (static
objects) ............................................. 280, 286
Function ......................................................... 286
PCS (Pre-Collision System)
Function ............................................. 209, 220
PCS OFF switch .............................. 212, 222
Warning light ...............................................433
Warning message ...........................219, 226
Personal lights............................................... 340
PKSA (Parking Support Alert) .............. 265
PKSB (Parking Support Brake).............280
Warning message .....................................284
Pop Up Hood................................................... 38
Power control unit............................................ 61
Power control unit coolant
Capacity .........................................................463
Checking ...................................................... 390

520 Alphabetical Index
LS500h_OM_OM50F42U_(U) S
Seat belt buckle lights . ............................... 340
Seat belt reminder ligh t................... 430, 431
Seat belts............................................................ 24
Automatic Locking Retractor ................ 26
Child restraint system installation ......... 46
Cleaning and maintaining the seat belt
......................................................................... 373
Easy Access Buckle .................................... 26
Emergency Locking Retractor .............. 26
How to wear your seat belt ..................... 25
How your child should wear the seat belt
............................................................................ 25
Pregnant women, proper seat belt use
.............................................................................24
Reminder light and buzzer ........ 430, 431
Seat belt extender ........................................ 25
SRS warning light ...................................... 428
Seat heaters ................................................... 336
Seat position memory........................139, 143
Seat ventilators ............................................. 336
Seating capacity.............................................166
Seats
Adjustment........................................... 128, 135
Adjustment precautions ...........................128
Child seats/child restraint system installa-
tion .................................................................... 45
Cleaning......................................................... 373
Driving position memory.........................139
Front seat refresh system.........................133
Head restraints ............................................. 144
Power easy access system .....................139
Properly sitting in the seat .........................23
Rear seat relaxation system................... 138
Seat heaters .................................................. 336
Seat position memory .................... 139, 143
Seat ventilators............................................ 336
Secondary Collision Brake ..................... 302
Sensor
Automatic headlight system.................. 185
Automatic High Beam system............. 188 Inside rear view mirror ............................. 148
Intuitive parking assist ..............................266
LKA (Lane-Keeping Assist) .................240
LTA (Lane Tracing Assist) ....................230
Parking Support Brake function
(rear-crossing vehicles) ........................291
Parking Support Brake function (static
objects) ........................................................ 287
Radar sensor ........................... 197, 204, 261
Rain-sensing windshield wipers ............ 191
RCTA............................................................... 274
Service plug ........................................................ 61
Service reminder message ..................... 378
Shift lever
Hybrid transmission....................................174
Shift lever light .............................................. 340
Shopping bag hooks .................................. 348
Side airbags ...................................................... 29
Side marker lights
Light switch .................................................... 185
Replacing light bulbs ..................................417
Side mirrors
Adjustment ..................................................... 149
BSM (Blind Sport Monitor)................. 260
Folding.............................................................. 150
Linked mirror functi on when reversing
........................................................................... 149
Mirror position memory .......................... 139
RCTA function ............................................ 273
Side turn signal lights
Replacing light bulbs ..................................417
Turn signal lever .......................................... 180
Side windows ................................................... 151
Smart access system with push-button
start
Antenna location ........................................... 119
Entry functions .............................................. 108
Starting the hybrid system ...................... 168
Snow mode ...................................................... 177
Snow tires ....................................................... 309
Spark plug ...................................................... 463
Specifications ................................................ 460