2018 LEXUS LS500 brake sensor

4257-2. Steps to take in an emergency
LS500_OM_OM50F54U_(U) 7
When trouble arises ■
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.428

4951-1. What to do if... (Troubleshooting)
LS500_OM_OM50F54U_(U) 495What to do if... (Troubleshooting)
( → P.438)
 It is locked automatically to prevent
theft of the vehicle. ( → P.160)
 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.141 )
 The auto power off function will be
operated if the vehicle is left in
ACCESSORY mode for a period of
time. ( → P.162)
 The seat belt reminder light is flash-
ing Are the driver and the front passenger
wearing the seat belts? ( →
P.421 )
 The parking brake indicator is on Is the parking brake released? ( →
P.170 )
Depending on the situation, other
types of warning buzzer may also
sound. ( → P.418, 428)  Did anyone inside the vehicle open
a door during setting the alarm? The sensor detects it and the alarm sounds.
( →
P.60 )
Do one of the following to deactivate
or stop the alarms:
 Unlock the doors.
 Turn the engine switch to ACCES-
SORY or IGNITION ON mode, or
start the engine. (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.428 )
 When a warning light turns on or a
warning message is displayed, refer
to P.418, 428.
 Slow down the vehicle, drive with The steering wheel cannot be
turned after the engine is
stopped
The windows do not open or
close by operating the power
window switches
The engine 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

504 Alphabetical Index
LS500_OM_OM50F54U_(U) N
Navigation system-linked display..... 81, 83
Noise from under vehicle ...............................6 O
“ODO TRIP” switch .............................. 70, 75
Odometer ................................................. 70, 75
Odometer and trip meter display
Display items .......................................... 70, 75
“ODO TRIP” switch ........................... 70, 75
Pop-up display.........................................71, 75
Oil
Engine oil .......................................................450
Front differential oil ................................... 452
Rear differential oil .................................... 453
Opener
Fuel filler door............................................... 185
Hood................................................................ 375
Trunk ..................................................................102
Outer foot lights
Location..........................................................330
Outside door handle lights...................... 330
Outside rear view mirrors
Adjustment...................................................... 137
BSM (Blind Sport Monitor) ...................251
Folding ............................................................. 138
Linked mirror functi on when reversing
........................................................................... 137
Mirror position memory........................... 127
Outside rear view mirror defoggers . 314
RCTA function ............................................ 264
Outside temperature............................ 69, 72
Overheating .................................................. 443
P
Paddle shift switches ..........................167, 168
Panic mode ....................................................... 94
Panoramic moon roof
Jam protection function............................146
Operation........................................................ 144 Parking assist sensors (intuitive parking
assist) ............................................................. 257
Parking brake
Operation ....................................................... 170
Parking brake engaged warning buzzer
............................................................................ 172
Warning light ...............................................425
Warning message ....................................... 172
Parking lights
Light switch .....................................................175
Replacing light bulbs ............................... 408
Parking Support Brake function (for
rear-crossing vehicles) .......................... 282
Function ..........................................................282
Parking Support Brake function (rear
pedestrians) ...................................... 271, 286
Function ......................................................... 286
Parking Support Brake function
(rear-crossing vehicles)........................... 271
Parking Support Brake function (static
objects) ................................................ 271, 277
Function .......................................................... 277
PCS (Pre-Collision System)
Function ...............................................200, 210
PCS OFF switch ............................. 203, 213
Warning light ............................................... 424
Warning message ............................ 210, 217
Personal lights............................................... 330
PKSA (Parking Support Alert) .............. 256
PKSB (Parking Support Brake)............... 271
Warning message ..................................... 275
Pop Up Hood................................................... 38
Power easy access system ........................ 127
Power outlets ................................................ 344
Power rear seat ..............................................123
Power steering (Elect ric power steering
system) .......................................................... 294
Warning light .................................................421
Power trunk opener and closer ..............102
Power windows
Door lock linked window operation . 140
Jam protection function ........................... 139

506 Alphabetical Index
LS500_OM_OM50F54U_(U) Seat ventilators ............................................. 326
Seating capacity............................................ 158
Seats
Adjustment............................................. 116, 123
Adjustment precautions ............................ 116
Child seats/child restraint system installa-
tion .................................................................... 45
Cleaning.........................................................365
Driving position memory......................... 127
Front seat refresh system...........................121
Head restraints ............................................. 132
Power easy access system ..................... 127
Properly sitting in the seat .........................23
Rear seat relaxation system.................... 126
Seat heaters .................................................. 326
Seat position memory .......................127, 131
Seat ventilators............................................ 326
Secondary Collision Brake ..................... 294
Sensor
Automatic headlight system................... 175
Automatic High Beam system..............178
Inside rear view mirror..............................136
Intuitive parking assist.............................. 257
LKA (Lane-Keeping Assist)................... 231
LTA (Lane Tracing Assist)...................... 221
Parking Support Brake function
(rear-crossing vehicles)...................... 282
Parking Support Brake function (static
objects)........................................................ 278
Radar sensor.......................... 188, 195, 252
Rain-sensing windshield wipers............ 181
RCTA .............................................................. 265
Service reminder message ..................... 368
Shift lever
Automatic transmission ............................163
Shift lever light .............................................. 330
Shopping bag hooks .................................. 339
Side airbags ...................................................... 29
Side marker lights
Light switch ..................................................... 175
Replacing light bulbs............................... 408 Side mirrors
Adjustment ......................................................137
BSM (Blind Sport Monitor)................... 251
Folding.............................................................. 138
Linked mirror functi on when reversing
............................................................................137
Mirror position memory ........................... 127
RCTA function ............................................ 264
Side turn signal lights
Replacing light bulbs ............................... 408
Turn signal lever .......................................... 169
Side windows ..................................................139
Smart access system with push-button
start
Antenna location ......................................... 107
Entry functions ................................................ 96
Starting the engine ..................................... 160
Snow mode ...................................................... 167
Snow tires ....................................................... 299
Spark plug ........................................................451
Specifications ................................................ 448
Speedometer ........................................... 69, 72
Steering lock
Column lock release ................................. 160
Steering lock system warning message
........................................................................... 160
Steering wheel
Adjustment ..................................................... 135
Heated steering wheel ............................326
Meter control switches ...............................77
Power easy access system ..................... 127
Steering wheel position memory......... 127
Stop lights
Replacing light bulbs ............................... 408
Storage features .......................................... 334
Stuck
If the vehicle becomes stuck ................446
Suggestion function....................................... 82
Sun visors ........................................................ 345
Sunshade
Roof.....................................................................142