2018 LEXUS LS500H brake

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

5111-1. What to do if... (Troubleshooting)
LS500h_OM_OM50F42U_(U) 511Alphabetical Index
Alphabetical Index A
A/C
Air conditioning filter ...................................411
Front automatic air conditioning system
......................................................................... 323
Micro dust and pollen filter................... 329
Rear air conditioning system ............... 333
ABS (Anti-lock Brake System).............. 302
Warning light ............................................... 429
Adaptive Front-lighting System (AFS) .187
Adaptive Variable Suspension System303
AFS (Adaptive Front-lighting System) .187
Air conditioning filter .................................... 411
Air conditioning system
Air conditioning filter ...................................411
Front automatic air conditioning system
......................................................................... 323
Micro dust and pollen filter................... 329
Rear air conditioning system ............... 333
Airbags
Airbag operating conditions..................... 31
Airbag precautions for your child ........ 34
Correct driving posture .............................23
Curtain shield airbag operating condi-
tions .................................................................... 31
Curtain shield airbag precautions ....... 34
Front passenger occupa nt classification
system ............................................................. 40
General airbag precautions ................... 34
Locations of airbags.................................... 29
Modification and disposal of airbags ..37
Side airbag operating conditions ........... 31
Side airbag precautions ............................ 34
Side and curtain shield airbags operating
conditions........................................................ 31
Side and curtain shield airbags precau-
tions .................................................................. 34
SRS airbags ..................................................... 29
SRS warning light ...................................... 428
Alarm
Alarm .................................................................. 68 Warning buzzer ......................................... 427
Anchor brackets ..................................... 46, 55
Antennas (smart acc ess system with
push-button start)........................................ 119
Anti-lock Brake System (ABS).............. 302
Warning light ............................................... 429
Approach warning...................................... 256
Armrest............................................................ 352
Assist grips ..................................................... 352
Audio system-linked display ...................... 90
Automatic headlight leveling system ... 186
Automatic High Beam ............................... 188
Automatic light control system............... 185
Auxiliary boxes .................................. 347, 349
Average fuel economy................................. 88
Average vehicle speed ................................ 88
B
Back-up lights
Replacing light bulbs ..................................417
Battery (12-volt battery)
Battery checking ........................................393
If the 12-volt battery is discharged .... 447
Preparing and checking before winter
......................................................................... 309
Warning light ...............................................428
Battery (traction battery) .............................. 61
Blind Spot Monitor (BSM)....................... 260
Brake
Brake hold ...................................................... 183
Fluid.................................................................. 465
Parking brake ................................................. 181
Regenerative braking .................................59
Warning light ............................................... 427
Brake assist .................................................... 302
Break-in tips.....................................................159
Brightness control
Instrument panel light control........ 79, 85
BSM (Blind Spot Monitor)....................... 260

5131-1. What to do if... (Troubleshooting)
LS500h_OM_OM50F42U_(U) 513Alphabetical Index
Multi-information display .......................... 86
Parking Support Brake function (rear
pedestrians) .............................................. 295
RCD (Rear Camera Detection) .........277
RCTA .............................................................. 273
Warning message..................................... 437
Distance until next engine oil change
..................................................................... 79, 84
Do-it-yourself maintenance .................... 379
Door courtesy lights ................................... 340
Door lock
Doors................................................................ 108
Smart access system with push-button
start ................................................................... 119
Wireless remote control......................... 106
Doors
Automatic door lock ing and unlocking
system ..............................................................112
Door closer ....................................................... 111
Door glasses ................................................... 151
Door lock........................................................ 108
Open door warning bu zzer .......... 109, 111
Outside rear view mirrors ......................149
Rear door child-protectors ....................... 111
Drive distance .................................................. 88
Drive info 1/Drive info 2 .............................. 88
Driver’s seat position memory
Driving position memory.........................139
Memory recall function ............................ 142
Power easy access system .....................139
Drive-start control ........................................159
Driving
Break-in tips .................................................. 159
Correct driving posture .............................23
Driving mode select switch ..................298
Hybrid vehicle driving tips .................... 307
Procedures .................................................... 158
Winter drive tips.........................................309
Driving information display ........................ 87
Driving position memory............................139
Memory recall function ............................ 142
Power easy access system .....................139 Driving range ................................................... 88
Driving support system information display
............................................................................. 90
DRS (Dynamic Rear Steering) .............. 303
Dynamic radar cruise control with
full-speed range ............................. 247, 250
Warning message .....................................259
Dynamic Rear Steering (DRS) .............. 303 E
ECB (Electronically Controlled Brake Sys-
tem) ................................................................ 302
EDR (Event data recorder) ............................7
Elapsed time ..................................................... 88
Electric motor (traction motor) ................ 58
Electric Power Steering (EPS) .............. 303
Warning light .............................................. 430
Electronic key ................................................ 104
Battery-saving function............................ 120
If the electronic key does not operate
properly .......................................................445
Replacing the battery .................................413
Electronically Controlled Brake System
(ECB) ............................................................ 302
Electronically modulated air suspension
.......................................................................... 299
Emergency flashers .................................... 420
Emergency, in case of
If a warning buzzer sounds................... 427
If a warning light turns on....................... 427
If a warning message is displayed ..... 437
If the 12-volt battery is discharged .... 447
If the electronic key does not operate
properly .......................................................445
If the fuel filler do or cannot be opened
..........................................................................445
If the hybrid system will not start ........ 443
If you have a flat tire .................................. 442
If you lose your keys ................................. 444
If you think something is wrong.......... 426
If your vehicle becomes stuck ............. 457
If your vehicle has to be stopped in an

514 Alphabetical Index
LS500h_OM_OM50F42U_(U) emergency ................................................ 420
If your vehicle needs to be towed ..... 422
If your vehicle overheats ........................ 453
Energy monitor ....................................... 96, 97
Engine
ACCESSORY mode ...............................170
Compartment ............................................. 387
Engine compartment cover ................ 388
Engine switch................................................ 168
Hood............................................................... 385
How to start the hybrid system ........... 168
Identification number .................................461
If the hybrid system will not start ........ 443
If your vehicle has to be stopped in an
emergency ................................................ 420
Ignition switch (power switch) ............. 168
Overheating................................................. 453
Power switch ................................................ 168
Tachometer .............................................. 77, 81
Engine compartment cover ....................388
Engine coolant
Capacity ......................................................... 463
Checking .......................................................390
Preparing and checking before winter
.........................................................................309
Engine coolant temperature gauge .77, 81
Engine oil
Capacity ......................................................... 462
Checking ...................................................... 388
Preparing and checking before winter
.........................................................................309
Warning light ............................................... 428
Engine oil maintenance data .................. 390
Engine switch (power switch) ................. 168
If your vehicle has to be stopped in an
emergency ................................................ 420
EPS (Electric Power Steering) .............. 303
Warning light ...............................................430
EV drive mode................................................ 172
EV indicator ...................................................... 59
Event data recorder (EDR) ............................7 F
FCTA (Front Cross Traffic Alert) ..........227
First-aid kit storage belt ............................ 349
Flat tire
Tire pressure warning system ............. 397
Floor mats ...........................................................22
Fluid
Brake ............................................................... 465
Hybrid transmission..................................464
Washer ............................................................ 391
Footwell light ................................................. 340
Front air conditioning system ................. 323
Front Cross Traffic Alert (FCTA) ..........227
Front passenger occupant classification
system .............................................................. 40
Front seats
Adjustment ..................................................... 128
Cleaning ......................................................... 373
Correct driving posture ............................ 23
Driving position memory ........................ 139
Head restraints..............................................144
Memory recall function.............................142
Power easy access system .................... 139
Refresh system ............................................. 133
Seat heaters ..................................................336
Seat position memory .............................. 139
Seat ventilators ............................................336
Front side marker light
Light switch .................................................... 185
Replacing light bulbs ..................................417
Front turn signal lights
Replacing light bulbs ..................................417
Turn signal lever .......................................... 180
Fuel
Capacity .......................................................... 461
Fuel gauge ................................................. 77, 81
Information ....................................................470
Refueling.......................................................... 194
Type ................................................................... 461
Warning light .............................................. 430

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

5211-1. What to do if... (Troubleshooting)
LS500h_OM_OM50F42U_(U) 521Alphabetical Index
Speedometer .............................................77, 81
Steering lock
Column lock release..................................169
Steering lock system warning message
...........................................................................169
Steering wheel
Adjustment...................................................... 147
Heated steering wheel............................ 336
Meter control switches .............................. 87
Power easy access system .....................139
Steering wheel position memory ........139
Stop lights
Replacing light bulbs.................................. 417
Storage features .......................................... 343
Stuck
If the vehicle becomes stuck................ 457
Suggestion function......................................... 91
Sun visors ........................................................ 354
Sunshade
Roof ....................................................................154
Switches
Activating the Automatic High Beam
.......................................................................... 188
Automatic High Beam system............. 188
Brake Hold switch ..................................... 183
Door lock switches ...................................... 110
Driving mode select switch ..................298
Driving position memory switches .....139
Dynamic radar cruise control with
full-speed range switch .........................251
Emergency flashers switch ................... 420
EV drive mode switch .............................. 172
Garage door opener switches ......... 358
Heated steering wheel switch............. 336
HUD (Head-up display) switch............ 94
Ignition switch............................................... 168
Instrument panel light control switches
................................................................... 79, 85
Intuitive parking assist switch............... 267
Light switches ............................................... 185
LKA (Lane-Keeping A ssist) switch.. 242
LTA (Lane-Tracing Assist) switch .... 234 Meter control switches .............................. 87
Moon roof switches................................... 153
“ODO TRIP”switch ............................79, 85
Outside rear view mi rror switches .... 149
Paddle shift switches ....................... 178, 179
Parking brake switch................................... 181
PCS OFF switch .............................. 212, 222
PKSB (Parking Support Brake) switch
........................................................................... 281
Power door lock switch ............................ 110
Power switch................................................. 168
Power window switches ........................... 151
RCD (Rear camera detection) switch
.......................................................................... 277
RCTA switch ................................................ 273
Rear door sunshade switch ................. 355
Rear seat heater..........................................334
Rear seat position memory switches .143
Rear seat ventilator ...................................334
Rear sunshades switch........................... 356
Rear window and outside rear view mir-
ror defoggers switch ............................ 323
Seat heater switches.................................336
Seat ventilator switches ..........................336
Snow mode switch...................................... 177
“SOS” button................................................364
Tilt and telescopic steering control switch
............................................................................147
Tire pressure warning reset switch.... 401
Trunk closer switch ...................................... 115
Trunk opener main switch........................ 118
Trunk opener switch ................................... 114
Vehicle-to-vehicle distance switch.... 251
VSC OFF switch ...................................... 304
Window lock switch.................................. 153
Windshield wiper and washer switch190
Windshield wiper de-icer switch....... 327
T
Tachometer.................................................77, 81
Rev indicator ...................................................83
Rev peak............................................................83

5231-1. What to do if... (Troubleshooting)
LS500h_OM_OM50F42U_(U) 523Alphabetical Index
U
USB charging ports......................................351 V
Vanity lights.................................................... 354
Vanity mirrors ............................................... 354
Variable Gear Ratio Steering (VGRS)303
VDIM (Vehicle Dynami cs Integrated Man-
agement)...................................................... 303
Vehicle data recordings ..................................7
Vehicle Dynamics Integrated Manage-
ment (VDIM).............................................. 303
Vehicle identification number ................ 460
Vehicle Stability Control (VSC) ........... 302
Vehicle sway warning display ................... 89
Ventilators (seat ventilators)................... 336
VGRS (Variable Gear Ratio Steering)303
VSC (Vehicle Stabilit y Control) ........... 302
W
Warning buzzers
ABS .................................................................. 429
Airbags ........................................................... 428
Approach warning.................................... 256
Brake hold..................................................... 434
Brake Override System ......................... 429
Brake system ............................................... 427
Charging system ....................................... 428
Downshifting .................................................. 179
Drive-Start Control .................................. 429
Electric power steering ..........................430
Engine ............................................................. 428
High coolant temperature .................... 427
Hybrid system ............................................. 428
Intuitive parking assist...................272, 432
LKA (Lane-Keeping Assist).......240, 431
Low engine oil pressure......................... 428
LTA (Lane Tracing Assi st)......... 230, 431
Open door.............................................. 109, 111
Open window ...............................................152 PKSA (Parking Support Alert) ...........266
PKSB (Parking Support Brake) .........433
Pop Up Hood.............................................. 429
Pre-collision braking ..................... 209, 221
RCD (Rear Camera Detection) ........ 432
RCTA (Rear Cross Tra ffic Alert) ...... 432
Seat belt ............................................... 430, 431
Warning label .................................................... 61
Warning lights................................................427
ABS ................................................................... 429
Brake hold operated indicator ...........434
Brake Override System ......................... 429
Brake system................................................ 427
Charging system........................................428
Drive-Start Control................................... 429
Electric power steering.......................... 430
High coolant temperature..................... 427
Intuitive parking assist OFF indicator432
LKA indicator.................................................431
Low engine oil pressure.........................428
Low fuel level .............................................. 430
LTA indicator .................................................431
Malfunction indicator lamp ...................428
Master warning light................................. 434
Parking brake indicator ..........................434
PKSB OFF indicator ................................433
Pop Up Hood.............................................. 429
Pre-collision system..................................433
RCD OFF indicator.................................. 432
RCTA OFF indicator ............................... 432
Seat belt reminder light................ 430, 431
Slip indicator .................................................433
SRS ....................................................................428
Tire pressure ..................................................431
Warning messages ..................................... 437
Warning reflector storage belt.............. 349
Washer
Checking ........................................................ 391
Preparing and checking before winter
......................................................................... 309
Switch................................................................ 190
Washing and waxing.................................. 370