
4928-2. Customization
LS500h_OM_(U)_1809
■Illumination (P.341)
■Vehicle customization
●When the smart access system with 
push-button start is off, the entry unlock 
function cannot be customized.
●When the doors remain closed after 
unlocking the doors and the timer acti-
vated automatic door lock function acti-
vates, signals will be generated in 
accordance with the operation buzzer 
volume and operational signal (Emer-
FunctionDefault settingCustomized set-
ting
Time elapsed before the inte-
rior lights turn off15 seconds
Off
O——O7.5 seconds
30 seconds
Operation after the power 
switch is turned offOnOff———O
Operation when the doors 
are unlockedOnOff———O
Operation when you 
approach the vehicle with the 
electronic key on your person
OnOff———O
Footwell lightsOnOff———O
Instrument panel ornament 
light and door trim ornament 
lights
OnOff———O
Time elapsed before the outer 
foot lights turn off15 seconds
Off
O——O7.5 seconds
30 seconds
Operation of the outer foot 
lights when you approach the 
vehicle with the electronic 
key on your person
OnOff———O
Operation of the outer foot 
lights when the doors are 
unlocked
OnOff———O
Operation of the outer foot 
lights when a door is openedOnOff———O
Fading out of the outer foot 
lights when they turn offLongShort———O
ABCD 

506What to do if... (Troubleshooting)
LS500h_OM_(U)_1809
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
 If you lose your mechanical keys, 
new genuine mechanical keys can 
be made by your Lexus dealer. 
( P.442)
 If you lose your electronic keys, the 
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer 
immediately. ( P.442)
 Is the electronic key battery weak or 
depleted? ( P.409)
 Is the power switch in ON mode?
When locking the doors, turn the power 
switch off. ( 
P.172)
Is the electronic key left inside the 
vehicle?
When locking the doors, make sure that 
you have the electronic key on your per-
son.
The function may not operate prop- erly due to the condition of the radio 
wave. (
P.125)
 Is the child-protector lock set?
The rear door cannot be opened from 
inside the vehicle when the lock is set. 
Open the rear door from outside and then 
unlock the child-protector lock. ( 
P.115)
The function to prevent the elec-
tronic key from being left inside the 
trunk will operate and you can open 
the trunk as usual. Take the key out 
from the trunk. ( P.120)
 Did you press the power switch 
while firmly depressing the brake 
pedal? ( P.170)
 Is the electronic key anywhere 
detectable inside the vehicle? 
( P.124)
 Is the steering wheel unlocked? 
( P.171)
 Is the electronic key battery weak or 
depleted?
In this case, the hy brid system can be 
If you have a problem, check the 
following before contacting your 
Lexus dealer.
The doors cannot be locked, 
unlocked, opened or closed
You lose your keys
The electronic key does not 
operate properly
The doors cannot be locked or 
unlocked
The rear door cannot be opened
The trunk lid is closed with the 
electronic key left inside
If you think something is wrong
The hybrid system does not start 

510Alphabetical Index
LS500h_OM_(U)_1809
Buzzer Hands off steering wheel alert (LTA)............................................................. 244, 244
C
Card key .......................................................... 108
Care Aluminum wheels ......................................368
Exterior ...........................................................368
Interior ............................................................... 371
Seat belts.......................................................... 371
Cargo capacity.............................................. 168
Cargo net ....................................................... 350
Center Display ...............................................316
Chains ............................................................... 310
Child restraint system Fixed with a LATCH system .................. 53
Fixed with a seat belt................................... 49
Front passenger occupant classification system ............................................................. 40
Points to remember .................................... 45
Riding with children ..................................... 45
Types of child restraint system installation  method ........................................................... 46
Using an anchor bracket .......................... 55
Child safety 12-volt battery precautions ........ 391, 449
Airbag precautions...................................... 34
Child restraint system................................. 46
Heated steering wheel and seat heater precautions................................................ 337
How your child should wear the seat belt ............................................................................ 25
Moon roof precautions ............................ 157
Power window lock switch.................... 156
Power window precautions .................. 155
Rear door child-protectors ..................... 115
Removed electronic key battery precau- tions ................................................................ 410
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 45
Trunk precautions ........................................ 116 Child-protectors............................................. 115
Cleaning
Aluminum wheels ..................................... 368
Exterior........................................................... 368
Interior ...............................................................371
Radar sensor ................................... 200, 206
Seat belts ..........................................................371
Clock ................................................ 81, 85, 355
Clock light ........................................................341
Coat hooks..................................................... 354
Coin holder .................................................... 347
Condenser .....................................................388
Console box .................................................. 348
Cooling system............................................. 387 Engine overheating.................................. 450
Hybrid system overheating ................... 451
Cornering lights ............................................ 189
Cruise control Dynamic radar cruise control with full-speed range ......................... 245, 255
Cup holders ................................................... 347
Current fuel consumption .......................... 92
Curtain shield airbags .................................. 29
Customizable features .............................. 479
D
Daytime running light system ...................187
Defogger Outside rear view mirrors..................... 324
Rear window ................................................ 324
Windshield .................................................... 324
Differential Front differential oil............. .......................463
Rear differential oil......... ..................... .......463
Dimension ...................................................... 458
Dinghy towing.................................................169
Display Center Display ............................................. 316
Dynamic radar cruise control with full-speed range ......................................245
Energy monitor ............................................ 100
Head-up display............................................ 96 

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 

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 

5171-1. What to do if... (Troubleshooting)
LS500h_OM_(U)_1809517Alphabetical Index
Pop Up Hood................................................... 38
Power control unit.......................................... 66
Power control unit coolant Capacity ...........................................................461
Checking ....................................................... 387
Preparing and checking before winter.........................................................................309
Power easy access system ........................ 142
Power outlets ................................................ 355
Power rear seat ............................................. 138
Power steering (Elect ric power steering 
system).......................................................... 302 Warning light ............................................... 427
Power switch ...................................................170 Auto power off function ........................... 173
Changing the power switch modes .. 172
Power switch (engine switch) If your vehicle has to  be stopped in an 
emergency ..................................................416
Power trunk opener and closer ............... 118
Power windows Door lock linked window operation. 155
Jam protection function............................154
Operation........................................................154
Window lock switch ................................. 156
Pre-Collision System (PCS) Function ................................................ 212, 223
PCS OFF switch .............................. 215, 225
Warning light ...............................................430
R
Radar cruise control (dynamic radar cruise control with full-speed range)..245, 255
Radiator ...........................................................388
RCD (Rear camera detection) .............. 263 Warning message..................................... 276
RCD (Rear Camera Detection) Function .......................................................... 275
RCTA Function ............................................................ 271
Warning message......................................272
RCTA (Rear Cross Traffic Alert) ......... 263 RCTA function ..............................................272
Rear automatic air conditioning system
.......................................................................... 334
Rear Cross Traffic Alert (RCTA) ........... 271
Rear door sunshades ................................. 357
Rear Multi Operation Panel .................... 318
Rear seat position memory .......................146
Rear seats ........................................................ 138 Adjustment ..................................................... 138
Head restraints..............................................147
Rear seat position memory.................... 146
Relaxation system ......................................... 141
Seat heaters .................................................. 337
Seat ventilators ............................................ 337
Rear side marker lights Light switch .................................................... 187
Replacing light bulbs ..................................414
Rear sunshades ............................................358
Rear turn signal lights Replacing light bulbs ..................................414
Turn signal lever .......................................... 182
Rear view mirror Inside rear view mirror ............................... 151
Outside rear view mirrors...................... 152
Rear window defogger ............................. 324
Refueling Capacity ........................................................ 459
Fuel types ...................................................... 459
If the fuel filler do or cannot be opened
.......................................................................... 442
Opening the fuel tank cap ......................197
Regenerative braking ................................... 64
Remote Touch ................................................314
Replacing Electronic key battery ............................. 409
Fuses.................................................................... 411
Light bulbs .......................................................414
Tires ................................................................... 401
Resetting the message indicating mainte- nance is required ...................................... 375
Rev indicator .................................................... 87
Rev peak............................................................. 87