2021 Lexus LC500C lexus LC500C 2021 Owner's Manual / LEXUS 2021 LC500 CONVERTIBLE OWNER'S MANUAL (OM11498U)

391
Index
What to do if... (Troubleshooting) ........................................................ 392
Alphabetical index ................... 394

392What to do if... (Troubleshooting)
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.329)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.329)
 Is the electronic key battery weak or
depleted? ( P.297)
 Is the engine switch in ON?
When locking the doors, turn the engine
switch off. ( P.149)
 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.105) 
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.102)
 Did you press the engine switch
while firmly depressing the brake
pedal? ( P.146)
 Is the shift position in P? ( P.150)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.104)
 Is the steering wheel unlocked?
( P.146)
 Is the electronic key battery weak or
depleted?
In this case, the engine can be started in a
temporary way. ( P.331)
 Is the battery discharged?
( P.332)
 It is locked automatically to prevent
theft of the vehicle. ( P.146)
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 is
stopped

393What to do if... (Troubleshooting)
Is the window lock switch pressed?
The windows other than the side window at
the driver’s seat cannot be operated if the
window lock switch is pressed. ( P.125)
 The auto power off function will be
operated if the vehicle is left in ACC
or ON (the engine is not running)
for a period of time. ( P.149)
 The seat belt reminder light is flash-
ing
Are the driver and the passengers wearing
the seat belts? ( P.318)
 The parking brake indicator is on
Is the parking brake released? ( P.157)
Depending on the situation, other
types of warning buzzer may also
sound. ( P.314, 323)
 Did anyone inside the vehicle open
a door during setting the alarm?
The sensor detects it and the alarm sounds.
(  P.65)
To stop the alarm, turn the engine switch to ON, or start the engine.

Is the electronic key left inside the
vehicle?
Check the message on the multi-informa-
tion display. ( P.323)
 When a warning light turns on or a
warning message is displayed, refer
to P.314, 323.
 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.327)
 Try the procedure for when the
vehicle becomes stuck in mud, dirt,
or snow. ( P.347)
The side windows or rear quar-
ter windows do not open or close
by operating the power window
switches
The engine switch is turned off
automatically
A warning buzzer sounds during
driving
An alarm is activated and the
horn sounds
A warning buzzer sounds when
leaving the vehicle
A warning light turns on or a
warning message is displayed
When a problem has occurred
If you have a flat tire
The vehicle becomes stuck

394Alphabetical index
Alphabetical index
A
A/C ................................................................... 232Air conditioning filter ............................... 296
Automatic air conditioning system ... 232
Micro dust and pollen filter................... 237
ABS (Anti-lock Brake System)................218 Function ............................................................218
Warning light .................................................315
ACA (Active Cornering Assist) .............219
Active Cornering Assist (ACA) .............219
Active roll bar .................................................. 38 Package tray ................................................... 40
Adaptive Variable Suspension System 219
Airbags ............................................................... 29 Airbag operating conditions..................... 31
Airbag precautions for your child ........ 33
Correct driving posture .............................23
Front passenger occupant classification system ............................................................... 41
General airbag precautions ................... 33
Locations of airbags.................................... 29
Modification and disposal of airbags . 35
Side airbag operating conditions ........... 31
Side airbag precautions ............................ 33
SRS airbags ..................................................... 29
SRS warning light ........................................315
Air conditioning filter ................................. 296
Air conditioning system ............................ 232 Air conditioning filter ............................... 296
Automatic air conditioning system ... 232
Micro dust and pollen filter................... 237
Alarm Alarm .................................................................. 65
Warning buzzer ........................................... 314
Anchor brackets ..............................................47
Antennas (smart access system with push- button start) ................................................. 103
Anti-lock Brake System (ABS)................218 Function ............................................................218
Warning light .................................................315
Approach warning........................................199 Automatic headlight leveling system ....162
Automatic High Beam ................................164
Automatic light control system................. 161
Automatic transmission ............................. 150
M mode ........................................................... 155
Paddle shift switches .......................154, 155
Snow mode.................................................... 154
Auxiliary net................................................... 246
Average fuel economy................................. 80
Average vehicle speed ................................ 80
B
Back-up lights Replacing light bulbs ............................... 303
Battery.............................................................. 279 Battery checking ........................................ 279
If the battery is discharged .................... 332
Preparing and checking before winter.......................................................................... 223
Replacing .......................................................336
Warning light .................................................314
Blind Spot Monitor (BSM)....................... 209 Blind Spot Monitor function ...................213
Rear Cross Traffic Alert function ........ 215
Brake Brake hold ...................................................... 159
Fluid...................................................................354
Parking brake ................................................157
Warning light ......................................314, 318
Warning message ..................................... 324
Brake assist ......................................................218
Break-in tips..................................................... 137
Brightness control Instrument panel light control................. 78
BSM (Blind Spot Monitor)....................... 209 Blind Spot Monitor function ...................213
Rear Cross Traffic Alert function ........ 215
C
Care .......................................................258, 262Aluminum wheels ......................................259

Alphabetical index395
Exterior ...........................................................258
Interior ............................................................. 262
Seat belts........................................................ 262
Cargo capacity...............................................144
Cargo hooks ................................................. 248
Center Display ............................................. 226
Chains .............................................................. 224
Child restraint system................................... 46 Fixed with a LATCH system .................. 53
Fixed with a seat belt...................................50
Front passenger occupant classification system ............................................................... 41
Points to remember .................................... 46
Riding with children ..................................... 46
Types of child restraint system installation method ............................................................47
Child safety ....................................................... 46 Airbag precautions...................................... 33
Battery precautions ...................... 279, 337
Child restraint system..................................47
Heated steering wheel and seat heater precautions................................................ 240
How your child should wear the seat belt ............................................................................ 25
Installing child restraints ............................ 48
Power window lock switch.....................125
Power window precautions ................... 124
Removed electronic key battery precau- tions ...............................................................298
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 46
Trunk precautions ...................................... 100
Cleaning...............................................258, 262 Aluminum wheels ...................................... 259
Exterior ...........................................................258
Interior ............................................................. 262
Radar sensor........................................ 173, 212
Seat belts........................................................ 262
Clock ........................................................ 75, 249
Condenser ......................................................277
Console box ...................................................247
Console box light .........................................247 Cooling system..............................................276
Engine overheating...................................345
Cornering lights .............................................163
Cruise control Dynamic radar cruise control with full-
speed range ............................................... 194
Cup holder ......................................................247
Current fuel consumption .......................... 80
Customizable features .............................. 367
D
Daytime running light system .................... 161
Defogger Outside rear view mirrors..................... 233
Rear window ................................................ 233
Windshield .................................................... 233
Differential ...................................................... 354
Dimension ......................................................350
Dinghy towing.................................................145
Display BSM (Blind Spot Monitor)................... 209
Drive information ......................................... 80
Dynamic radar cruise control with full-
speed range ............................................... 194
Head-up display............................................85
Intuitive parking assist ..............................204
LKA (Lane-Keeping Assist) .................. 189
Multi-information display .......................... 79
Warning message ..................................... 323
Distance ............................................................. 80
Do-it-yourself maintenance .................... 266
Door courtesy lights ................................... 244
Door lock Doors .................................................................. 96
Smart access system with push-button start ................................................................. 103
Wireless remote control ........................... 94
Door pockets ................................................ 246
Doors ................................................................... 96 Automatic door lock ing and unlocking
system..............................................................99
Door glasses .................................................. 122

396Alphabetical index
Door lock.......................................................... 96
Open door warning buzzer .......... 97, 99
Outside rear view mirrors ....................... 119
Drive info 1/Drive info 2 .............................. 80
Drive information ........................................... 80
Driver’s seat position memory .................. 112 Driving position memory...........................112
Memory recall function ..............................114
Power easy access system .......................112
Drive-start control ........................................ 137
Driving................................................................136 Break-in tips ................................................... 137
Correct driving posture .............................23
Driving mode select switch .................. 203
Procedures .....................................................136
Winter drive tips......................................... 223
Driving mode select switch ..................... 203
Driving position memory Power easy access system .......................112
Dynamic radar cruise control with full- speed range..................................................194Warning message.......................................201
E
ECB (Electronically Controlled Brake Sys- tem) ..................................................................218
Eco drive mode ............................................ 203
Eco Driving Indicator.....................................73
Eco Driving Indicator Light .........................73
EDR (Event data recorder) ............................7
Elapsed time ..................................................... 80
Electric Power Steering (EPS) Function ............................................................ 219
Warning light .................................................315
Electronically Controlled Brake System (ECB) ..............................................................218
Electronic key .................................................. 92 Battery-saving function ........................... 104
If the electronic key does not operate properly.......................................................330
Replacing the battery............................... 297
Emergency, in case of If a warning buzzer sounds.....................314
If a warning light turns on.........................314
If a warning message is displayed ..... 323
If the battery is discharged .................... 332
If the electronic key does not operate
properly ...................................................... 330
If the engine will not start........................328
If the fuel filler do or cannot be opened
......................................................................... 330
If the soft top roof cannot be closed 338
If the vehicle is trapped in rising water ..........................................................................307
If you have a flat tire .................................. 327
If you lose your keys .................................329
If you think something is wrong............312
If your vehicle becomes stuck ............. 347
If your vehicle has to be stopped in an emergency ................................................ 306
If your vehicle needs to be towed .... 309
If your vehicle overheats ........................345
Emergency flashers .................................... 306
Engine ACC.................................................................. 149
Compartment.............................................. 274
Engine switch ................................................ 146
Fuel pump shut off system...................... 313
Hood ................................................................ 272
How to start the engine ........................... 146
Identification number ................................ 351
If the engine will not start........................328
If your vehicle has to be stopped in an emergency ................................................ 306
Ignition switch (engine switch)............. 146
Overheating .................................................345
Engine coolant...............................................276 Capacity .........................................................352
Checking ....................................................... 276
Preparing and checking before winter.......................................................................... 223
Engine coolant temperature gauge ....... 75
Engine immobilizer system ........................ 63
Engine oil .........................................................274

Alphabetical index397
Capacity ...........................................................351
Checking ....................................................... 274
Preparing and checking before winter......................................................................... 223
Warning light .................................................314
Engine oil temperature gauge ...................75
Engine switch ..................................................146 Auto power off function ...........................149
Changing the engine switch modes..149
If your vehicle has to be stopped in an
emergency ................................................306
Starting the engine ......................................146
EPS (Electric Power Steering) ................219 Function ............................................................ 219
Warning light .................................................315
Event data recorder (EDR) ............................7
F
First-aid kit storage belt ............................ 248
Flat tire ............................................................. 327 Tire pressure warning system ............. 283
Floor mats ...........................................................22
Fluid Automatic transmission ..........................353
Brake................................................................ 354
Washer ........................................................... 278
Footwell light ................................................. 244
Front passenger occupant classification system ................................................................ 41
Front seats ......................................................... 110 Adjustment....................................................... 110
Cleaning......................................................... 262
Correct driving posture .............................23
Driving position memory...........................112
Head restraints .............................................. 116
Jam protection function............................... 111
Memory recall function ..............................114
Neck heaters ............................................... 240
Power easy access system .......................112
Seat heaters .................................................. 240
Seat position memory .................................112
Seat ventilators............................................ 240 Front side marker light ................................. 161
Light switch ...................................................... 161
Replacing light bulbs ............................... 303
Front turn signal lights .................................156 Replacing light bulbs ............................... 303
Turn signal lever .......................................... 156
Fuel ....................................................................... 171 Capacity .......................................................... 351
Fuel gauge ........................................................ 75
Fuel pump shut off system...................... 313
Information ....................................................357
Refueling............................................................ 171
Type ................................................................... 351
Warning light ................................................ 318
Fuel consumption Average fuel consumpt ion after refueling
............................................................................ 80
Average fuel economy ............................. 80
Current fuel consumption ....................... 80
Fuel filler door .................................................. 171 If the fuel filler do or cannot be opened
......................................................................... 330
Refueling............................................................ 171
Fuel gauge ......................................................... 75
Fuel pump shut off system..........................313
Fuses ................................................................. 299
G
Garage door opener ................................. 250
Gauges ............................................................... 75
Gear positions ...................................................81
G-force.................................................................81
Glove box ....................................................... 246
Glove box light ............................................. 246
H
Headlights ......................................................... 161 Automatic High Beam system ............. 164
Light switch ...................................................... 161
Replacing light bulbs ............................... 303
Headlights aim .............................................. 302

398Alphabetical index
Head restraints ................................................ 116Neck heaters ............................................... 240
Head-up display.............................................. 85
Heated steering wheel .............................. 240
Heaters Air conditioning system.......................... 232
Heated steering wheel............................ 240
Neck heaters ............................................... 240
Outside rear view mirrors .................... 233
Seat heaters .................................................. 240
Hill-start assist control .................................219
Hood ..................................................................272 Open ................................................................272
Pop Up Hood ................................................ 36
Hooks Cargo hooks................................................ 248
Retaining hooks (floor mat)......................22
Horn ..................................................................... 117
I
I/M test ............................................................ 269
Identification Engine ...............................................................351
Vehicle ........................................................... 350
Ignition switch (engine switch).................146 Auto power off function ...........................149
Changing the engine switch modes..149
If your vehicle has to be stopped in an
emergency ................................................306
Starting the engine ......................................146
Illuminated entry system ........................... 244
Immobilizer system ........................................ 63
Indicators ............................................................. 71
Initialization Items to initialize ......................................... 378
Maintenance ................................................ 265
Power windows............................................ 123
Rear quarter windows............................... 123
Tire pressure warning system .............286
Inside rear view mirror ................................. 118
Instrument panel light control ................... 78
Interior lights.................................................. 244 Intuitive parking assist................................ 204
Function ..........................................................204
Warning message .................................... 206
J
JackPositioning a floor jack ............................ 272
Vehicle-equipped jack .......................... 289
Jack handle .................................................... 289
Jam protection function Front seats .......................................................... 111
Power windows ............................................ 122
Rear quarter windows ............................... 122
K
Keyless entrySmart access system with push-button start ................................................................. 103
Wireless remote control ........................... 94
Keys...................................................................... 92 Battery-saving function............................ 104
Electronic key ................................................. 92
Engine switch ................................................ 146
If the electronic key does not operate properly ...................................................... 330
If you lose your keys .................................329
Key number plate ......................................... 92
Keyless entry ........................................ 96, 103
Mechanical key .............................................. 92
Replacing the battery ............................... 297
Warning buzzer .......................................... 104
Wireless remote control ........................... 94
Knee airbags .................................................... 29
L
Lane-Keeping Assist (LKA)..................... 186 Operation ....................................................... 186
Warning messages.....................................192
Language (multi-information display) ... 83
LATCH anchors ............................................. 53