Page 417 of 432
417
LC500_LC500h_OM_OM11405U_(U)
Index
What to do if... (Troubleshooting) ......................................................... 418
Alphabetical index ................... 420
Page 418 of 432

418What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)
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.354)
If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.354)
Is the electronic key battery weak or
depleted? ( P.318)
Is the engine switch
in IGNITION ON mode
mode>?
When locking the doors, turn the engine
switch off. ( P.142, 146)
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.108)
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.105)
Did you press the engine switch
while firmly
depressing the brake pedal?
( P.140, 143)
Is the shift position in P? ( P.149,
155)
Is the electronic key anywhere
detectable inside the vehicle?
( P.107)
Is the steering wheel unlocked?
( P.141, 144)
Is the electronic key battery weak or
depleted?
In this case, the engine can
be started in a temporary way. ( P.356)
Is the 12-volt battery discharged?
( P.357)
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 doors cannot be locked or
unlocked
The trunk lid is closed with the
electronic key left inside
If you think something is wrong
The engine does
not start
The steering wheel cannot be
turned after the engine
system> is stopped
Page 419 of 432

419What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)419What to do if... (Troubleshooting)
It is locked automatically to prevent
theft of the vehicle. ( P.141, 144)
Is the window lock switch pressed?
The power window at the passenger’s seat
cannot be operated if the window lock
switch is pressed. ( P.126)
The auto power off function will be
operated if the vehicle is left in
ACCESSORY or IGNITION ON
mode (the engine is
not running
operating>) for a period of time.
( P.143, 146)
The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.339)
The parking brake indicator is on
Is the parking brake released? ( P.162)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.334, 344)
Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds.
(
P.64)
To stop the alarm, turn the engine
switch to IGNITION
ON mode , or start the
engine .
Is the electronic key left inside the
vehicle?
Check the message on the multi-informa-
tion display. ( P.344)
When a warning light turns on or a
warning message is displayed, refer
to P.334, 344.
Slow down the vehicle, drive with
extra caution, and take your vehicle
to the nearest Lexus dealer or
authorized tire dealer as soon as
possible to have the tire replaced.
( P.350)
Try the procedure for when the vehi-
cle becomes stuck in mud, dirt, or
snow. ( P.370)
The windows do not open or
close by operating the power
window switches
The engine switch
switch> is turned off automati-
cally
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
The vehicle becomes stuck
Page 420 of 432

420Alphabetical index
LC500_LC500h_OM_OM11405U_(U)
Alphabetical index
A
A/C ................................................................... 242 Air conditioning filter .................................316
Automatic air conditioning system ... 242
Micro dust and pollen filter................... 247
ABS (Anti-lock Brake System).............. 226 Function .......................................................... 226
Warning light ...............................................335
Active rear wing........................................... 224
Adaptive Variable Suspension System227
Airbags ............................................................... 28 Airbag operating conditions................... 30
Airbag precautions for your child ........ 33
Correct driving posture .............................23
Curtain shield airbag operating condi- tions .................................................................. 30
Curtain shield airbag precautions ....... 33
Front passenger occupant classification system ............................................................. 38
General airbag precautions ................... 33
Locations of airbags.................................... 28
Modification and disposal of airbags . 35
Side airbag operating conditions ......... 30
Side airbag precautions ............................ 33
Side and curtain shield airbags operating conditions...................................................... 30
Side and curtain shield airbags precau- tions .................................................................. 33
SRS airbags ..................................................... 28
SRS warning light ...................................... 335
Air conditioning filter ...................................316
Air conditioning system ............................ 242 Air conditioning filter .................................316
Automatic air conditioning system ... 242
Micro dust and pollen filter................... 247
Alarm ................................................................... 64 Alarm .................................................................. 64
Warning buzzer ......................................... 334
Anchor brackets ..................................... 44, 52
Antennas (smart access system with push- button start) ................................................. 106 Anti-lock Brake System (ABS).............. 226
Function .......................................................... 226
Warning light ...............................................335
Approach warning...................................... 204
Automatic headlight leveling system ... 168
Automatic High Beam ................................170
Automatic light control system................ 167
Automatic transmission ..............................149 M mode ........................................................... 154
Paddle shift switches .......................153, 154
Snow mode.................................................... 153
Auxiliary net................................................... 254
Average fuel economy..................................79
Average vehicle speed .................................79
B
Back-up lights Replacing light bulbs ................................ 324
Battery (12-volt battery) ........................... 298 Battery checking ....................................... 298
If the 12-volt battery is discharged ....357
Preparing and checking before winter.......................................................................... 233
Warning light ...............................................334
Battery (traction batter y) ............................ 57
Blind Spot Monitor (BSM).........................215 Blind Spot Monitor function .................. 218
Rear Cross Traffic Alert function ......... 221
Brake Brake hold ...................................................... 165
Fluid...................................................................378
Parking brake ................................................162
Regenerative braking .................................55
Warning light .................................. 334, 338
Warning message .....................................345
Brake assist .................................................... 226
Break-in tips...................................................... 131
Brightness control Instrument panel light control..................77
BSM (Blind Spot Monitor).........................215 Blind Spot Monitor function .................. 218
Rear Cross Traffic Alert function ......... 221
Page 421 of 432

421What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)Alphabetical index421
C
Care ........................................................274, 277 Aluminum wheels ...................................... 275
Exterior ........................................................... 274
Interior ..............................................................277
Seat belts.........................................................277
Cargo capacity.............................................. 138
Cargo hooks ................................................. 256
Center Display ............................................. 236
Chains .............................................................. 234
Child restraint system................................... 43 Fixed with a LATCH system ..................50
Fixed with a seat belt....................................47
Front passenger occupant classification system ............................................................. 38
Points to remember .................................... 43
Riding with children ..................................... 43
Types of child restraint system installation method ........................................................... 44
Using an anchor bracket .......................... 52
Child safety ....................................................... 43 12-volt battery precautions .......299, 363
Airbag precautions...................................... 33
Child restraint system................................. 44
Heated steering wheel and seat heater precautions................................................ 249
How your child should wear the seat belt ............................................................................ 25
Power window lock switch..................... 126
Power window precautions ................... 126
Removed electronic key battery precau- tions ................................................................ 318
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 43
Trunk precautions ...................................... 103
Cleaning................................................274, 277 Aluminum wheels ...................................... 275
Exterior ........................................................... 274
Interior ..............................................................277
Radar sensor........................................182, 217
Seat belts.........................................................277 Clock ................................................................ 258
Coat hooks..................................................... 259
Condenser ..................................................... 296
Console box .................................................. 255
Console box light ........................................ 255
Cooling system............................................. 295
Engine overheating...................... 364, 366
Hybrid system overheating .................. 367
Cornering lights .............................................169
Cruise control Dynamic radar cruise control with full-
speed range ............................................... 198
Cup holder ..................................................... 255
Current fuel consumption ...........................79
Curtain shield airbags .................................. 28
Customizable features ................................391
D
Daytime running light system ................... 167
Defogger Outside rear view mirrors..................... 243
Rear window ................................................ 243
Windshield .................................................... 243
Differential ...................................................... 378
Dimension ...................................................... 372
Dinghy towing.................................................139
Display BSM (Blind Spot Monitor)..................... 215
Drive information .......................................... 79
Dynamic radar cruise control with full-
speed range ............................................... 198
Energy monitor ..............................................89
Head-up display............................................84
Intuitive parking assist ............................. 209
LKA (Lane-Keeping Assist) .................. 194
Multi-information display .......................... 78
Warning message ..................................... 344
Distance ..............................................................79
Do-it-yourself maintenance .................... 283
Door courtesy lights ................................... 252
Door lock Doors .................................................................. 99
Page 422 of 432

422Alphabetical index
LC500_LC500h_OM_OM11405U_(U)
Smart access system with push-button start ................................................................. 106
Wireless remote control........................... 97
Door pockets ................................................ 254
Doors ................................................................... 99 Automatic door lock ing and unlocking
system ............................................................102
Door glasses ..................................................125
Door lock.......................................................... 99
Open door warning bu zzer .......100, 102
Outside rear view mirrors ...................... 123
Drive info 1/Drive info 2 ...............................79
Drive information ............................................79
Driver’s seat position memory .................. 116 Driving position memory.......................... 116
Memory recall function ..............................117
Drive-start control ......................................... 131
Driving............................................................... 130 Break-in tips .................................................... 131
Correct driving posture .............................23
Driving mode select switch ..................208
Hybrid vehicle driving tips ...................... 231
Procedures .................................................... 130
Winter drive tips......................................... 233
Driving mode select switch .....................208
DRS (Dynamic Rear Steering) ...............227
Dynamic radar cruise control with full- speed range................................................. 198Warning message.....................................206
Dynamic Rear Steering (DRS) ...............227
E
ECB (Electronically Controlled Brake Sys- tem) ................................................................ 226
Eco drive mode ............................................208
Eco Driving Indicator.....................................72
Eco Driving Indicator Light .........................72
EDR (Event data recorder) ............................7
Elapsed time ......................................................79
Electric motor (tractio n motor) ................ 54
Electric Power Steering (EPS) Function ...........................................................227 Warning light ...............................................335
Electronically Controlled Brake System (ECB) ............................................................ 226
Electronic key .................................................. 96 Battery-saving function............................108
If the electronic key does not operate properly ...................................................... 355
Replacing the battery ................................ 318
Emergency, in case of If a warning buzzer sounds...................334
If a warning light turns on.......................334
If a warning message is displayed ..... 344
If the 12-volt battery is discharged ....357
If the electronic key does not operate properly ...................................................... 355
If the engine will not start......................... 351
If the fuel filler do or cannot be opened
..........................................................................354
If the hybrid system will not start ........352
If you have a flat tire ................................. 350
If you lose your keys .................................354
If you think something is wrong.......... 332
If your vehicle becomes stuck .............370
If your vehicle has to be stopped in an emergency .................................................326
If your vehicle needs to be towed .....328
If your vehicle overheats ........... 364, 366
Emergency flashers .................................... 326
Energy monitor ............................................... 89
Engine ACCESSORY mode..................... 142, 146
Compartment................................................291
Engine switch ................................................ 140
Fuel pump shut off system.....................333
Hood ............................................................... 289
How to start the engine ........................... 140
How to start the hybrid system.............143
Identification number ............................... 372
If the engine will not start......................... 351
If the hybrid system will not start ........352
If your vehicle has to be stopped in an emergency .................................................326
Page 423 of 432

423What to do if... (Troubleshooting)
LC500_LC500h_OM_OM11405U_(U)Alphabetical index423
Ignition switch (engine switch) ............ 140
Ignition switch (power switch) ..............143
Overheating.....................................364, 366
Power switch ................................................. 143
Engine coolant.............................................. 295 Capacity ......................................................... 376
Checking ....................................................... 295
Preparing and checking before winter......................................................................... 233
Engine coolant temperature gauge ........74
Engine immobilizer system ........................ 62
Engine oil ........................................................ 293 Capacity ......................................................... 374
Checking ....................................................... 293
Preparing and checking before winter......................................................................... 233
Warning light ............................................... 334
Warning message..................................... 347
Engine oil maintenance data .................. 294
Engine oil temperature gauge ...................74
Engine switch (power switch) ....... 140, 143 Auto power off function ................ 143, 146
Changing the engine switch (power switch) modes..................................142, 146
If your vehicle has to be stopped in an
emergency ................................................ 326
Starting the engine (hybrid system) 140,
143
EPS (Electric Power Steering) ...............227 Function ...........................................................227
Warning light ...............................................335
EV drive mode................................................ 147
Event data recorder (EDR) ............................7
EV indicator ...................................................... 55
F
First-aid kit storage belt ............................ 256
Flat tire ............................................................. 350 Tire pressure warning system .............303
Floor mats ...........................................................22
Fluid Automatic transmission ...........................377 Brake ................................................................378
Hybrid transmission..................................378
Washer ........................................................... 297
Footwell light ................................................. 252
Front passenger occupant classification system .............................................................. 38
Front seats ......................................................... 114 Adjustment ....................................................... 114
Cleaning ......................................................... 277
Correct driving posture ............................ 23
Driving position memory .......................... 116
Head restraints............................................... 119
Jam protection function ............................. 115
Memory recall function.............................. 117
Seat heaters .................................................. 249
Seat position memory ................................ 116
Seat ventilators ............................................ 249
Front side marker light ................................ 167 Light switch .....................................................167
Replacing light bulbs ................................ 324
Front turn signal lights .................................. 161 Replacing light bulbs ................................ 324
Turn signal lever ............................................ 161
Fuel ...................................................................... 176 Capacity ......................................................... 373
Fuel gauge ........................................................ 74
Fuel pump shut off system.....................333
Information ..................................................... 381
Refueling...........................................................176
Type .................................................................. 373
Warning light .............................................. 338
Fuel consumption Average fuel consumpt ion after refueling
............................................................................. 79
Average fuel economy .............................. 79
Current fuel consumption ........................ 79
Fuel filler door ................................................. 176 If the fuel filler do or cannot be opened
..........................................................................354
Refueling...........................................................176
Fuel gauge ..........................................................74
Fuel pump shut off system........................ 333
Page 424 of 432

424Alphabetical index
LC500_LC500h_OM_OM11405U_(U)
Fuses ...................................................................319
G
Garage door opener ................................. 260
Gauges ................................................................74
Glove box ....................................................... 254
Glove box light ............................................. 254
Grocery bag hooks .................................... 256
H
Headlights ........................................................ 167 Automatic High Beam system..............170
Light switch ..................................................... 167
Replacing light bulbs................................ 324
Headlights aim .............................................. 323
Head restraints ................................................ 119
Head-up display.............................................. 84
Heated steering wheel .............................. 249
Heaters Air conditioning system.......................... 242
Heated steering wheel............................ 249
Outside rear view mirrors .................... 243
Seat heaters .................................................. 249
High-voltage components ..........................57
Hill-start assist control ................................227
Hood ................................................................. 289 Open ...............................................................289
Pop Up Hood ................................................ 36
Hooks Cargo hooks................................................ 256
Coat hooks ................................................... 259
Grocery bag hooks ................................. 256
Retaining hooks (floor mat)......................22
Horn ..................................................................... 121
Hybrid battery (traction battery) Location............................................................. 57
Specification ................................................. 374
Warning message........................................ 60
Hybrid battery (traction battery) air vents ............................................................................. 60
Hybrid system .................................................. 54 Emergency shut off system......................60
Energy monitor/consumption screen89
EV drive mode..............................................147
High voltage components ....................... 57
Hybrid System Indicator .......................... 88
Hybrid system precautions...................... 57
Hybrid vehicle driving tips ......................231
If the hybrid system will not start ........352
Overheating ................................................. 367
Power (ignition) switch .............................143
Regenerative braking .................................55
Starting the hybrid system .......................143
Vehicle proximity noti
fication system.56
Hybrid System Indicator.............................. 88
Hybrid transmission..................................... 155 M mode ........................................................... 160
Paddle shift switches ...................... 159, 160
Snow mode.................................................... 159
I
I/M test ............................................................ 286
IdentificationEngine.............................................................. 372
Vehicle ............................................................ 372
Ignition switch (engine switch)................ 140 Auto power off function............................143
Changing the engine switch modes ..142
If your vehicle has to be stopped in an emergency .................................................326
Starting the engine ..................................... 140
Ignition switch (power switch) .................143
Auto power off function........................... 146
Changing the power switch modes . 146
If your vehicle has to be stopped in an emergency .................................................326
Starting the hybrid system .......................143
Illuminated entry system ........................... 252
Immobilizer system........................................ 62
Indicators ........................................................... 70
Initialization Items to initialize ........................................ 403
Maintenance.....................................282, 294