2019 LEXUS LS500H warning light

5071-1. What to do if... (Troubleshooting)
LS500h_OM_(U)_1809507What to do if... (Troubleshooting)
started in a temporary way. (
P.444)
 Is the 12-volt battery discharged?
( P.445)
 It is locked automatically to prevent
theft of the vehicle. ( P.171)
 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.156)
The auto power off function will be
operated if the vehicle is left in
ACCESSORY mode for a period of
time. ( P.173)
 The seat belt reminder light is flash-
ing
Are the driver and the front passenger
wearing the seat belts? ( 
P.427)
The parking brake indicator is on
Is the parking brake released? ( P.183)
Depending on the situation, other
types of warning buzzer may also
sound. (P.424, 434) 
Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
(
P.73)
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.434)
When a warning light turns on or a
warning message is displayed, refer
to P.424, 434.
 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

5091-1. What to do if... (Troubleshooting)
LS500h_OM_(U)_1809509Alphabetical Index
Alphabetical Index
A
A/C Air conditioning filter .............................. 408
Front automatic air conditioning system......................................................................... 323
Micro dust and pollen filter................... 329
Rear automatic air conditioning system ......................................................................... 334
ABS (Anti-lock Brake System).............. 302 Warning light ............................................... 426
Adaptive Front-lighting System (AFS) 189
Adaptive Variable Suspension System302
AFS (Adaptive Front-lighting System) 189
Air conditioning filter .................................408
Air conditioning system Air conditioning filter .............................. 408
Front automatic air conditioning system......................................................................... 323
Micro dust and pollen filter................... 329
Rear automatic air conditioning system ......................................................................... 334
Airbags Airbag operating conditions..................... 31
Airbag precautions for your child ........ 34
Correct driving posture .............................23
Curtain shield airbag operating condi- tions ...................................................................32
Curtain shield airbag precautions ....... 34
Front passenger occupant classification system ............................................................. 40
General airbag precautions ................... 34
Locations of airbags.................................... 29
Modification and disposal of airbags ..37
Side airbag operating conditions ..........32
Side airbag precautions ............................ 34
Side and curtain shield airbags operating conditions.......................................................32
Side and curtain shield airbags precau- tions .................................................................. 34
SRS airbags ..................................................... 29
SRS warning light ...................................... 426 Alarm ....................................................................73
Warning buzzer ......................................... 424
Anchor brackets ..................................... 46, 55
Antennas (smart acc ess system with
push-button start).......................................123
Anti-lock Brake System (ABS).............. 302 Warning light ............................................... 426
Approach warning........................................251
Armrest............................................................ 354
Assist grips ..................................................... 354
Audio system-linked display ...................... 93
Automatic headlight leveling system ... 188
Automatic High Beam ............................... 190
Automatic light control system................187
Auxiliary boxes ................................... 349, 351
Average fuel economy................................. 92
Average vehicle speed ................................ 92
B
Back-up lights Replacing light bulbs ..................................414
Battery (12-volt battery) Battery checking ....................................... 390
If the 12-volt battery is discharged ....445
Preparing and checking before winter......................................................................... 309
Warning light ...............................................425
Battery (traction batter y) ............................ 66
Blind Spot Monitor (BSM)....................... 258
Brake Brake hold ...................................................... 185
Fluid...................................................... 388, 463
Parking brake ............................................... 183
Regenerative braking ................................. 64
Warning light ............................................... 424
Brake assist .................................................... 302
Break-in tips...................................................... 161
Brightness control Instrument panel light control....... 83, 89
BSM (Blind Spot Monitor)....................... 258

5111-1. What to do if... (Troubleshooting)
LS500h_OM_(U)_1809511Alphabetical Index
Intuitive parking assist.............................. 265
LTA (Lane Tracing Assist).................... 239
Multi-information display .......................... 90
Parking Support Brake function (rear pedestrians) .............................................. 294
RCD (Rear Camera Detection) ........ 275
RCTA ................................................................ 271
Warning message..................................... 434
Distance until next engine oil change .................................................... 83, 88
Do-it-yourself maintenance .................... 376
Door courtesy lights .....................................341
Door lock Doors...................................................................112
Smart access system with push-button start .................................................................. 123
Wireless remote control........................... 110
Doors Automatic door lock ing and unlocking
system ............................................................. 116
Door closer ..................................................... 115
Door glasses ..................................................154
Door lock...........................................................112
Open door warning buzzer ...........113, 115
Outside rear view mirrors ......................152
Rear door child-protectors ..................... 115
Drive distance .................................................. 92
Drive info 1/Drive info 2 .............................. 92
Driver’s seat position memory Driving position memory......................... 142
Memory recall function ............................145
Power easy access system ..................... 142
Drive-start control ......................................... 161
Driving Break-in tips .................................................... 161
Correct driving posture .............................23
Driving mode select switch .................. 297
Hybrid vehicle driving tips .................... 307
Procedures .................................................... 160
Winter drive tips.........................................309
Driving information display .......................... 91 Driving position memory............................ 142
Memory recall function............................ 145
Power easy access system .....................142
Driving range ................................................... 92
Driving support system information display ............................................................................. 93
DRS (Dynamic Rear Steering) .............. 302
Dynamic radar cruise control with full-speed range .............................245, 255Warning message .....................................253
Dynamic Rear Steering (DRS) .............. 302
E
ECB (Electronically Controlled Brake Sys-
tem) ................................................................ 302
EDR (Event data recorder) ........................... 8
Elapsed time ..................................................... 92
Electric motor (traction motor) ................ 63
Electric Power Steering (EPS) .............. 302 Warning light ............................................... 427
Electronic key ................................................ 108 Battery-saving function.............................124
If the electronic key does not operate properly .......................................................443
Replacing the battery .............................. 409
Electronically Controlled Brake System (ECB) ............................................................ 302
Electronically modulated air suspension .......................................................................... 298
Emergency flashers ......................................416
Emergency, in case of If a warning buzzer sounds................... 424
If a warning light turns on....................... 424
If a warning message is displayed ..... 434
If the 12-volt battery is discharged ....445
If the electronic key does not operate properly .......................................................443
If the fuel filler do or cannot be opened
.......................................................................... 442
If the hybrid system will not start ....... 440
If the vehicle is trapped in rising water ............................................................................417

512Alphabetical Index
LS500h_OM_(U)_1809
If you have a flat tire .................................. 439
If you lose your keys................................. 442
If you think something is wrong ......... 423
If your vehicle becomes stuck............. 454
If your vehicle has to be stopped in an
emergency ..................................................416
If your vehicle needs to be towed .......419
If your vehicle overheats ........................450
Energy monitor .................................... 100, 101
Engine ACCESSORY mode ............................... 172
Compartment .............................................384
Engine compartment cover ................ 385
Engine switch.................................................170
Hood................................................................ 382
How to start the hybrid system ............170
Identification number ...............................459
If the hybrid system will not start ........440
If your vehicle has to be stopped in an
emergency ..................................................416
Ignition switch (power switch) ..............170
Overheating.................................................450
Power switch .................................................170
Tachometer ............................................. 81, 85
Engine compartment cover ....................385
Engine coolant Capacity ...........................................................461
Checking ....................................................... 387
Preparing and checking before winter.........................................................................309
Engine coolant temperature gauge 81, 85
Engine oil Capacity .........................................................460
Checking ...................................................... 385
Preparing and checking before winter.........................................................................309
Warning light ............................................... 425
Engine oil maintenance data .................. 387
Engine switch (power switch) ..................170 If your vehicle has to be stopped in an
emergency ..................................................416 EPS (Electric Power Steering) .............. 302
Warning light ............................................... 427
EV drive mode................................................ 174
EV indicator ...................................................... 64
Event data recorder (E DR) ........................... 8
F
FCTA (Front Cross Traffic Alert) ......... 230
First-aid kit storage belt ..............................351
Flat tire
Tire pressure warning system .............394
Floor mats ...........................................................22
Fluid Brake ................................................................463
Hybrid transmission.................................. 462
Washer .......................................................... 389
Footwell light ...................................................341
Front automatic air conditioning system .......................................................................... 323
Front Cross Traffic Alert (FCTA) ......... 230
Front passenger occupant classification system .............................................................. 40
Front seats Adjustment ....................................................... 131
Cleaning ...........................................................371
Correct driving posture ............................ 23
Driving position memory .........................142
Head restraints..............................................147
Memory recall function............................ 145
Power easy access system .....................142
Refresh system ............................................. 136
Seat heaters .................................................. 337
Seat position memory ...............................142
Seat ventilators ............................................ 337
Front side marker light Light switch .................................................... 187
Replacing light bulbs ..................................414
Front turn signal lights Replacing light bulbs ..................................414
Turn signal lever .......................................... 182
Fuel Capacity ........................................................ 459

5131-1. What to do if... (Troubleshooting)
LS500h_OM_(U)_1809513Alphabetical Index
Fuel gauge ............................................... 81, 85
Information ....................................................468
Refueling .......................................................... 197
Type..................................................................459
Warning light ............................................... 427
Fuel consumption Average fuel economy .............................. 92
Current fuel consumption........................ 92
Fuel filler door If the fuel filler door cannot be opened......................................................................... 442
Refueling .......................................................... 197
Fuel gauge .................................................. 81, 85
Fuses .................................................................... 411
G
Garage door opener ................................. 360
Gauges ........................................................ 81, 85
Gear Position................................................... 93
G-force............................................................... 93
Glove box ....................................................... 346
Glove box light ............................................. 347
H
Hands Free Power Trunk Lid .................... 119
Head restraints ............................................... 147
Headlights Adaptive Front-lighting System (AFS).......................................................................... 189
Automatic High Beam system............. 190
Light switch .....................................................187
Replacing light bulbs.................................. 414
Head-up display.............................................. 96 Driving information display area........... 96
Driving support system display area .. 99
HUD (Head-up display) switch............ 98
Hybrid System Indicator ......................... 100
Navigation system-linked display ........ 96
Pop-up display............................................... 99
Settings .............................................................. 98
Heated steering wheel .............................. 337 Heaters
Front automatic air conditioning system.......................................................................... 323
Heated steering wheel ............................ 337
Outside rear view mirrors..................... 324
Rear automatic air conditioning system
..........................................................................334
Seat heaters .................................................. 337
Height control Electronically modulated air suspension..........................................................................299
High-voltage components ......................... 66
Hill-start assist control ............................... 302
Hood Open................................................................382
Pop Up Hood.................................................38
Hooks Coat hooks ...................................................354
Retaining hooks (floor mat) ..................... 22
Horn ................................................................... 150
HUD (Head-up display) switch ................ 98
Hybrid battery (traction battery) Location ............................................................. 66
Specification ................................................ 460
Warning message ........................................ 69
Hybrid battery (traction battery) air vents ............................................................................. 69
Hybrid system .................................................. 63 Emergency shut off system...................... 69
Energy monitor/consumption screen100
EV drive mode..............................................174
High voltage components ....................... 66
Hybrid system precautions...................... 66
If the hybrid system will not start ....... 440
Overheating .................................................. 451
Power (ignition) switch ............................ 170
Regenerative braking ................................. 64
Starting the hybrid system ...................... 170
Vehicle proximity noti fication system.65
Hybrid System Indicator........... 82, 87, 100
Hybrid transmission...................................... 176 M mode ............................................................. 181

514Alphabetical Index
LS500h_OM_(U)_1809
Paddle shift switches ........................ 180, 181
Snow mode .................................................... 179
Hybrid vehicle driving tips ....................... 307
I
I/M test ............................................................ 379
Identification Engine .............................................................459
Vehicle ............................................................458
Ignition switch (power switch) .................170 Auto power off function ........................... 173
Changing the power switch modes .. 172
If your vehicle has to be stopped in an
emergency ..................................................416
Immobilizer system .......................................... 71
Indicators ........................................................... 78
Initialization Items to initialize ......................................... 494
Maintenance .................................... 375, 387
Power windows............................................154
Tire pressure warning system .............398
Inside door handle lights ............................341
Inside rear view mirror ................................. 151
Instrument panel light control .......... 83, 89
Interior lights....................................................341 Front interior light ........................................341
Rear interior light .........................................341
Intuitive parking assist.....................263, 265 Function .......................................................... 265
Warning message..................................... 267
J
JackPositioning a floor jack............................ 382
Jam protection function Moon roof ....................................................... 157
Power trunk opener and closer .............121
Power windows............................................154
Rear door sunshade ................................ 357
K
Keyless entrySmart access system with push-button start ..................................................................123
Wireless remote control ........................... 110
Keys Battery-saving function.............................124
Electronic key ...............................................108
If the electronic key does not operate properly .......................................................443
If you lose your keys ................................. 442
Key number plate .......................................108
Keyless entry ......................................... 112, 123
Mechanical key ............................................ 108
Power switch................................................. 170
Replacing the battery .............................. 409
Warning buzzer ...........................................124
Wireless remote control ........................... 110
Knee airbags .................................................... 29
L
Lane change assist function .................... 233
Lane Tracing Assist (LTA) Operation ...................................................... 233
Warning messages...................................245
Language (multi-information display) ... 94
LATCH anchors ............................................. 53
LDH (Lexus Dynamic Handling system) .......................................................................... 303
Lever Auxiliary catch lever .................................382
Hood lock release lever .........................382
Internal trunk release lever....................... 121
Shift lever ..........................................................176
Turn signal lever .......................................... 182
Wiper lever .....................................................192
Lexus climate concierge ............................321
Lexus Dynamic Handling system (LDH) .......................................................................... 303
Lexus Enform Safety Connect.................. 58

5151-1. What to do if... (Troubleshooting)
LS500h_OM_(U)_1809515Alphabetical Index
Lexus Safety System + 2.0 Automatic High Beam ............................. 190
Dynamic radar cruise control with full-speed range ...................................... 245
LTA(Lane Tracing Assist) ..................... 233
PCS (Pre-Collision System)................ 223
RSA (Road Sign Assist) ......................... 255
Lexus Safety System + A ............................199 Automatic High Beam ............................. 190
Dynamic radar cruise control with full-speed range ..........................245, 255
FCTA (Front Cross Traffic Alert) ..... 230
LTA (Lane Tracing Assist).................... 233
PCS (Pre-Collision System).................. 212
RSA (Road Sign Assist) ......................... 255
License plate lights Light switch .....................................................187
Replacing light bulbs.................................. 414
Light bulbs Replacing ......................................................... 414
Lights Automatic High Beam system............. 190
Front interior lights .................................... 342
Front personal lights................................. 342
Headlight switch ..........................................187
Interior lights................................................... 341
Interior lights list............................................341
Rear interior lights ..................................... 342
Rear personal lights.................................. 342
Replacing light bulbs.................................. 414
Trunk lid light..................................................120
Trunk light........................................................120
Turn signal lever ...........................................182
Vanity lights .................................................. 357
Welcome light illumination control ... 188
Lock steering column ................................... 171
LTA (Lane Tracing Assist) Operation...................................................... 233
Warning messages .................................. 245
Luggage mats ............................................... 350
M
Maintenance Do-it-yourself maintenance ................ 380
General maintenance ............................. 376
Maintenance data ..................................... 458
Maintenance requirements ..................375
Malfunction indicator la mp ..................... 426
Master warning light ....................................431
Menu icons........................................................ 90
Meter Changing the main meter location......89
Clock........................................................... 81, 85
Hybrid System Indicator .................. 82, 87
Indicators........................................................... 78
Instrument panel light control....... 83, 89
Meter control switches ................................91
Meters......................................................... 81, 85
Multi-information display ..........................90
Settings............................................................... 94
Units..................................................................... 93
Warning lights ............................................. 424
Warning message ..................................... 434
Micro dust and pollen filter ..................... 329
Mirrors Inside rear view mirror ............................... 151
Outside rear view mirror defoggers324
Outside rear view mirrors...................... 152
Vanity mirrors ..............................................357
Moon roof Door lock linked moon roof operation............................................................................157
Jam protection function ............................157
Operation ....................................................... 156
Multi-information display ............................ 90 Audio system-linked display ................... 93
Drive information 1/Drive information 2............................................................................. 92
Driving information display ........................91
Driving support system information dis- play.................................................................... 93

516Alphabetical Index
LS500h_OM_(U)_1809
Dynamic radar cruise control with full-speed range ...................................... 245
Energy monitor.............................................. 101
Gear Position ................................................. 93
G-force.............................................................. 93
LTA (Lane Tracing Assist).................... 239
Menu icons ...................................................... 90
Meter control switches ................................ 91
Navigation system-linked display ........ 93
Pop-up display............................................... 90
Settings .............................................................. 94
Suggestion function..................................... 95
Tire pressure ................................................ 394
Units .................................................................... 93
Warning message..................................... 434
N
Navigation system-linked display.... 93, 96
Noise from under vehicle ...............................6
O
“ODO TRIP” switch ............................. 83, 89
Odometer ................................................ 83, 88
Odometer and trip meter display Display items ......................................... 83, 88
“ODO TRIP” switch ...........................83, 89
Pop-up display......................................83, 89
Oil Engine oil .......................................................460
Front differential oil ................................... 463
Rear differential oil .................................... 463
Opener Fuel filler door................................................ 197
Hood................................................................ 382
Trunk ................................................................... 118
Outer foot lights Location............................................................ 341
Outside door handle lights........................341
Outside rear view mirrors Adjustment......................................................152
BSM (Blind Sport Monitor) .................258 Folding.............................................................. 153
Linked mirror functi
on when reversing
........................................................................... 152
Mirror position memory ...........................142
Outside rear view mirror defoggers324
RCTA function .............................................. 271
Outside temperature............................. 81, 85
Overheating .................................................. 450
P
Paddle shift switches .......................... 180, 181
Panic mode ....................................................... 110
Parking assist sensors (intuitive parking assist) ............................................................. 265
Parking brake Operation ....................................................... 183
Parking brake engaged warning buzzer........................................................................... 184
Warning light .................................................431
Warning message ...................................... 184
Parking lights Light switch .................................................... 187
Replacing light bulbs ..................................414
Parking Support Brake function (for rear-crossing vehicles) .......................... 290Function ......................................................... 290
Parking Support Brake function (rear pedestrians) ..................................... 278, 294Function .......................................................... 294
Parking Support Brake function (rear-crossing vehicles)......................... 278
Parking Support Brake function (static objects) ..............................................278, 284Function ..........................................................284
PCS (Pre-Collision System) Function ................................................ 212, 223
PCS OFF switch ..............................215, 225
Warning light .............................................. 430
Personal lights.................................................341
PKSA (Parking Support Alert) .............. 263
PKSB (Parking Support Brake)............. 278 Warning message .....................................282