2019 Lexus LC500h engine overheat

3677-2. Steps to take in an emergency
7
When trouble arises
3After the hybrid system has cooled
down sufficiently, inspect the hoses
and cooling system for leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact your Lexus dealer.
4The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F” line
“L” line
Coolant inlet cap
5 Add coolant if necessary.
Water can be used in an emergency if engine coolant is unavailable.
6
Start the hybrid system and turn the
air conditioning system on to check
that the radiator cooling fan oper-
ates and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning
system is turned on immediately after a
cold start. Confirm that the fan is operating
by checking the fan sound and air flow. If it
is difficult to check these, turn the air con-
ditioning system on and off repeatedly.
(The fan may not oper ate in freezing tem-
peratures.)
7 If the fan is not operating:
Stop the hybrid system immediately
and contact your Lexus dealer.
If the fan is operating:
Have the vehicle inspected at the
nearest Lexus dealer.
If “Hybrid System Overheated
Reduced Output Power” is shown
on the multi-information display
1 Stop the vehicle in a safe place.
2 Stop the hybrid system and care-
fully lift the hood.
A
B
A
B
C
D

Alphabetical index421
Rear Cross Traffic Alert function....... 226
C
Care ........................................................274, 277Aluminum wheels ...................................... 275
Exterior ........................................................... 274
Interior ..............................................................277
Seat belts.........................................................277
Cargo capacity...............................................144
Cargo hooks ................................................. 262
Center Display ............................................. 242
Chains .............................................................. 239
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 ...... 300, 363
Airbag precautions...................................... 33
Child restraint system................................. 44
Heated steering wheel and seat heater precautions................................................ 255
How your child should wear the seat belt ............................................................................ 25
Power window lock switch.....................133
Power window precautions ...................133
Removed electronic key battery precau- tions .................................................................319
Seat belt extender precautions ............. 25
Seat belt precautions .................................. 43
Trunk precautions ........................................ 110
Cleaning................................................274, 277 Aluminum wheels ...................................... 275
Exterior ........................................................... 274
Interior ..............................................................277
Radar sensor......................................186, 222 Seat belts ........................................................ 277
Clock ................................................................ 264
Coat hooks..................................................... 265
Condenser ..................................................... 297
Console box ....................................................261
Console box light ..........................................261
Cooling system............................................. 296 Engine overheating...................... 364, 366
Hybrid system overheating .................. 367
Cornering lights ............................................. 175
Cruise control Dynamic radar cruise control with full-
speed range ..............................................203
Cup holder .......................................................261
Current fuel consumption .......................... 85
Curtain shield airbags .................................. 28
Customizable features ................................391
D
Daytime running light system ................... 173
Defogger Outside rear view mirrors..................... 249
Rear window ................................................ 249
Windshield .................................................... 249
Differential ...................................................... 378
Dimension ...................................................... 372
Dinghy towing.................................................145
Display BSM (Blind Spot Monitor)....................220
Drive information ..........................................85
Dynamic radar cruise control with full-
speed range ..............................................203
Energy monitor ..............................................95
Head-up display............................................90
Intuitive parking assist ................................214
LKA (Lane-Keeping Assist) .................. 199
Multi-information display ..........................84
Warning message ..................................... 344
Distance ............................................................. 85
Do-it-yourself maintenance .................... 284
Door courtesy lights ................................... 258

422Alphabetical index
Door lockDoors................................................................ 106
Smart access system with push-button start ................................................................... 113
Wireless remote control......................... 104
Door pockets ................................................ 260
Doors ................................................................. 106 Automatic door lock ing and unlocking
system ........................................................... 109
Door glasses .................................................. 132
Door lock........................................................ 106
Open door warning bu zzer .......107, 109
Outside rear view mirrors ...................... 129
Drive info 1/Drive info 2 .............................. 85
Drive information ........................................... 85
Driver’s seat position memory ................. 122 Driving position memory......................... 122
Memory recall function ............................ 123
Drive-start control ........................................ 137
Driving................................................................136 Break-in tips ................................................... 137
Correct driving posture .............................23
Driving mode select switch .................... 213
Hybrid vehicle driving tips .................... 236
Procedures .....................................................136
Winter drive tips......................................... 238
Driving mode select switch .......................213
DRS (Dynamic Rear Steering) .............. 232
Dynamic radar cruise control with full- speed range................................................ 203Warning message.........................................211
Dynamic Rear Steering (DRS) .............. 232
E
ECB (Electronically Controlled Brake Sys- tem) ..................................................................231
Eco drive mode ..............................................213
Eco Driving Indicator.................................... 78
Eco Driving Indicator Light ........................ 78
EDR (Event data recorder) ........................... 8
Elapsed time ..................................................... 85
Electric motor (tractio n motor) .................. 61 Electric Power Steering (EPS)
Function .......................................................... 232
Warning light ...............................................336
Electronically Controlled Brake System (ECB) ..............................................................231
Electronic key .................................................102 Battery-saving function.............................. 115
If the electronic key does not operate properly ...................................................... 355
Replacing the battery ................................ 318
Emergency, in case of If a warning buzzer sounds...................335
If a warning light turns on.......................335
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 the vehicle is trapped in rising water .......................................................................... 327
If you have a flat tire ................................. 350
If you lose your keys .................................354
If you think something is wrong..........333
If your vehicle becomes stuck .............370
If your vehicle has to be stopped in an emergency .................................................326
If your vehicle needs to be towed .....329
If your vehicle overheats ........... 364, 366
Emergency flashers .................................... 326
Energy monitor ............................................... 95
Engine ACCESSORY mode..................... 148, 152
Compartment.............................................. 292
Engine switch ................................................ 146
Fuel pump shut off system.....................334
Hood ............................................................... 290
How to start the engine ........................... 146
How to start the hybrid system............ 149
Identification number ............................... 372

Alphabetical index423
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
Ignition switch (engine switch) .............146
Ignition switch (power switch) ..............149
Overheating.....................................364, 366
Power switch .................................................149
Engine coolant.............................................. 296 Capacity ......................................................... 376
Checking ....................................................... 296
Preparing and checking before winter
......................................................................... 238
Engine coolant temperature gauge ....... 80
Engine immobilizer system ........................ 69
Engine oil ........................................................ 293 Capacity ......................................................... 374
Checking ....................................................... 293
Preparing and checking before winter
......................................................................... 238
Warning light ...............................................335
Warning message..................................... 347
Engine oil maintenance data .................. 295
Engine oil temperature gauge .................. 80
Engine switch (power switch) ........146, 149 Auto power off function ................ 149, 152
Changing the engine switch (power
switch) modes................................. 148, 152
If your vehicle has to be stopped in an
emergency ................................................ 326
Starting the engine (hybrid system) 146,
149
EPS (Electric Power Steering) .............. 232 Function .......................................................... 232
Warning light ............................................... 336
EV drive mode................................................153
Event data recorder (EDR) ........................... 8
EV indicator ...................................................... 62
F
First-aid kit storage belt ............................ 262
Flat tire ............................................................. 350 Tire pressure warning system .............303 Floor mats ...........................................................22
Fluid
Automatic transmission .......................... 377
Brake ................................................................378
Hybrid transmission.................................. 377
Washer .......................................................... 298
Footwell light ................................................. 258
Front passenger occupant classification system .............................................................. 38
Front seats ........................................................120 Adjustment ..................................................... 120
Cleaning ......................................................... 277
Correct driving posture ............................ 23
Driving position memory ......................... 122
Head restraints............................................. 125
Jam protection function ............................. 121
Memory recall function.............................123
Seat heaters ..................................................255
Seat position memory ............................... 122
Seat ventilators ............................................255
Front side marker light ................................ 173 Light switch .....................................................173
Replacing light bulbs ................................ 324
Front turn signal lights ................................. 167 Replacing light bulbs ................................ 324
Turn signal lever ...........................................167
Fuel ......................................................................182 Capacity ......................................................... 373
Fuel gauge ....................................................... 80
Fuel pump shut off system.....................334
Information ..................................................... 381
Refueling.......................................................... 182
Type .................................................................. 373
Warning light ...............................................339
Fuel consumption Average fuel consumpt ion after refueling
.............................................................................85
Average fuel economy ..............................85
Current fuel consumption ........................85
Fuel filler door .................................................182 If the fuel filler do or cannot be opened
..........................................................................354

424Alphabetical index
Refueling ..........................................................182
Fuel gauge ......................................................... 80
Fuel pump shut off system........................ 334
Fuses ...................................................................319
G
Garage door opener ................................. 266
Gauges ............................................................... 80
Glove box ....................................................... 260
Glove box light ............................................. 260
Grocery bag hooks .................................... 262
H
Headlights ........................................................ 173 Automatic High Beam system.............. 176
Light switch ..................................................... 173
Replacing light bulbs................................ 324
Headlights aim .............................................. 323
Head restraints ...............................................125
Head-up display.............................................. 90
Heated steering wheel .. ............................ 255
Heaters Air conditioning system.......................... 248
Heated steering wheel............................ 255
Outside rear view mirrors .................... 249
Seat heaters .................................................. 255
High-voltage components ......................... 64
Hill-start assist control ............................... 232
Hood ................................................................. 290 Open ...............................................................290
Pop Up Hood ................................................ 36
Hooks Cargo hooks................................................ 262
Coat hooks ................................................... 265
Grocery bag hooks ................................. 262
Retaining hooks (floor mat)......................22
Horn .................................................................... 127
Hybrid battery (traction battery) Location............................................................. 64
Specification ................................................. 374
Warning message........................................ 67 Hybrid battery (traction battery) air vents
..............................................................................67
Hybrid system .................................................... 61 Emergency shut off system...................... 67
Energy monitor/consumption screen95
EV drive mode............................................. 153
High voltage components ....................... 64
Hybrid System Indicator ........................... 94
Hybrid system precautions...................... 64
Hybrid vehicle driving tips ....................236
If the hybrid system will not start ........352
Overheating ................................................. 367
Power (ignition) switch ............................ 149
Regenerative braking ................................. 62
Starting the hybrid system ...................... 149
Vehicle proximity noti fication system. 63
Hybrid System Indicator.............................. 94
Hybrid transmission....................................... 161 M mode ........................................................... 166
Paddle shift switches .......................165, 166
Snow mode.................................................... 165
I
I/M test ............................................................ 287
IdentificationEngine.............................................................. 372
Vehicle ............................................................ 372
Ignition switch (engine switch).................146 Auto power off function........................... 149
Changing the engine switch modes . 148
If your vehicle has to be stopped in an emergency .................................................326
Starting the engine ..................................... 146
Ignition switch (power switch) .................149
Auto power off function........................... 152
Changing the power switch modes . 152
If your vehicle has to be stopped in an emergency .................................................326
Starting the hybrid system ...................... 149
Illuminated entry system ........................... 258
Immobilizer system........................................ 69
Indicators ............................................................76

426Alphabetical index
Vanity lights .................................................. 264
Wattage......................................................... 380
Welcome light illumination control .... 174
LKA (Lane-Keeping Assist)......................196 Operation........................................................196
Warning messages .................................. 202
Lock steering column ........................147, 150
Low profile tire.............................................. 302
M
Maintenance Do-it-yourself maintenance .................288
General maintenance ............................. 284
Maintenance data...................................... 372
Maintenance requirements .................. 283
Malfunction indicator lamp ..................... 336
Master warning light .................................. 340
Meter Changing the display ................................. 83
Head-up display ........................................... 90
Indicators .......................................................... 76
Instrument panel light control ................ 83
Meters ................................................................80
Multi-information display .......................... 84
Operating the meter control switches85
Settings ..............................................................88
Warning lights ............................................. 335
Warning message..................................... 344
Micro dust and pollen filter ..................... 253
Mirrors Inside rear view mirror..............................128
Outside rear view mirror defoggers249
Outside rear view mirrors ...................... 129
Vanity mirrors.............................................. 264
Multi-information display ............................ 84 Audio system-linked ...................................88
Drive information ..........................................85
Dynamic radar cruise control with full-speed range .............................................. 203
Eco Driving Indicator ................................. 78
Energy monitor.............................................. 96
Gear positions ............................................... 86 G-force .............................................................. 87
Hybrid System Indicator ........................... 78
LKA (Lane-Keeping Assist) .................. 199
Navigation system-linked........................ 88
Rear wing position ...................................... 88
Settings.............................................................. 88
Switching the display...................................85
Tire pressure ............................................... 303
Warning message ..................................... 344N
Noise from under vehicle ...............................6
O
Odometer ......................................................... 80
Oil
Differential oil ....... ................................. .......378
Engine oil........................................................ 374
Opener Fuel filler door ............................................... 182
Hood ............................................................... 290
Trunk ..................................................................... 111
Outside door handle lig hts...................... 258
Outside rear view mirrors .........................129 Adjustment ......................................................129
BSM (Blind Spot Monitor)....................220
Folding.............................................................. 130
Linked mirror functi on when reversing
........................................................................... 130
Mirror position memory ........................... 122
Outside rear view mirror defoggers249
Outside temperature.................................... 80
Overheating .......................................364, 366
P
Paddle shift switches ..... 159, 160, 165, 166
Panic mode ..................................................... 104
Parking assist sensors (intuitive parking assist) ............................................................... 214
Parking brake................................................. 168