2017 LEXUS RC300H warning light

623What to do if... (Troubleshooting)
RC300h_EE(OM24740E)
●Is the message displayed on the multi-information display?
Check the message on the multi-information display. ( P. 542)
●When a warning light turns on or a warning message is displayed, refer to
P. 537, 542.
●Stop the vehicle in a safe place and repair the flat tire temporarily with the
emergency tire puncture repair kit. ( P. 563)
●Try the procedure for when the vehicle becomes stuck in mud, dirt, or snow.
( P. 592)
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

624
RC300h_EE(OM24740E)
Alphabetical index
Alphabetical index
A/C ............................................................ 432
Air conditioning filter....................... 509
Automatic air conditioning
system .................................................. 432
Blower customization ..................... 439
S-FLOW mode.................................. 434
AAC disc ...................................................371
ABS (Anti-lock Brake System) .......304
Warning light ...................................... 538
Active Sound Control (ASC)........... 231
Adaptive Variable
Suspension System .......................... 305
Air conditioning filter ......................... 509
Air conditioning system ..................... 432
Air conditioning filter....................... 509
Automatic air conditioning
system .................................................. 432
Blower customization ..................... 439
S-FLOW mode.................................. 434
Airbag manual on-off system ............. 54
Airbags......................................................... 43
Airbag manual on-off system ......... 54
Airbag operating conditions........... 49
Airbag precautions for
your child............................................... 45
Correct driving posture .................... 36
Curtain shield airbag operating
conditions.............................................. 49
Curtain shield airbag
precautions............................................47
General airbag precautions ........... 45
Locations of airbags............................ 43
Modification and disposal of
airbags .................................................... 48
Side airbag operating
conditions ..............................................49
Side airbag precautions.................... 45
Side and curtain shield airbags
operating conditions ........................49
Side and curtain shield airbags
precautions .......................................... 45
SRS airbags ..............................................43
SRS warning light .............................. 538
Alarm ...........................................................102
Anchor brackets ...................................... 64
Antennas (smart entry &
start system) ........................................ 155
Anti-lock Brake System (ABS)....... 304
Warning light....................................... 538
Approach warning............................... 262
ASC (Active Sound Control) ...........231
Assist grips .............................................. 457
Audio input ...............................................351
Audio system.......................................... 344
Audio CD player................................. 371
Audio input ............................................. 351
AUX port/USB port ......................... 351
Bluetooth® audio ............................. 395
iPod ........................................................... 377
Optimal use............................................ 361
Portable music player ..................... 386
Radio........................................................ 369
Steering wheel audio switch........ 350
USB memory ........................................381
Automatic headlight leveling
system ................................................... 234
Warning light....................................... 539
Automatic High Beam ...................... 235
Automatic light control system ...... 232
A

625Alphabetical index
RC300h_EE(OM24740E)
AUX port .................................................. 351
Average fuel economy........................ 124
Average vehicle speed ....................... 124
Back-up light
Replacing light bulb.......................... 524
Wattage................................................. 605
Battery (12-volt battery)...................... 481
If the 12-volt battery is
discharged.........................................582
Preparing and checking
before winter .................................... 337
Warning light ....................................... 537
Battery (traction battery) ......................89
Blind Spot Monitor (BSM) ................ 319
Blower customization ......................... 439
Bluetooth®
Audio system .......................................395
Hands-free system
(for cellular phone)........................ 397
Brake
Fluid ......................................................... 603
Parking brake ......................................230
Warning light ....................................... 537
Brake assist .............................................304
Break-in tips ........................................... 207
Brightness control
Instrument panel li ght control......... 118
BSM (Blind Spot Monitor) ................. 319
Card key ................................................... 138
Care ................................................460, 464
Aluminum wheels................................ 461
Exterior ................................................... 460
Interior..................................................... 464
Seat belts ............................................... 465
Cargo hooks .......................................... 452
Caution label ............................................. 89
CD player .................................................. 371
Chains ....................................................... 338
Child restraint system............................ 60
Child seats definition .......................... 60
Child seats installation .............. 68, 75
Installing a CRS to the
passenger seat ................................... 65
Installing a CRS to the
rear seat ..................................................67
Installing CRS with ISOFIX
rigid anchors ....................................... 80
Installing CRS with seat belts .......... 72
Installing CRS with top strap .......... 82
Child safety ................................................ 59
12-volt battery
precautions .......................... 483, 585
Airbag precautions ............................. 45
Child restraint system ........................ 60
How your child should
wear the seat belt.............................. 40
Installing child restraints .................... 60
Moon roof precautions .................. 203
Power window lock switch ............ 196
Power window precautions........... 199
Removed electronic key
battery precautions......................... 513
Seat belt precautions........................... 42
B
C

626Alphabetical index
RC300h_EE(OM24740E)
Seat heater precautions ................. 444
Trunk precautions ............................. 153
Cleaning ....................................... 460, 464
Aluminum wheels ................................461
Exterior................................................... 460
Interior ..................................................... 464
Seat belts................................................465
Clock ......................................................... 456
Coat hooks ..............................................458
Condenser ............................................ 480
Console box ...........................................450
Cooling system ...................................... 478
Engine overheating ..........................587
Hybrid system overheating ..........587
Cruise control
Cruise control ..................................... 253
Dynamic radar cruise control ..... 257
Cup holders ............................................. 451
Current fuel consumption.................. 124
Curtain shield airbags ........................... 43
Customizable features ...................... 608
DAB (Digital Audio Broadcast) ..... 369
Daytime running light system ......... 233
Defogger
Outside rear view mirrors ............ 438
Rear window........................................ 438
Windshield ........................................... 438
Differential............................................... 603
Digital Audio Broadcast (DAB) ..... 369
Dimensions ............................................. 596
Display
Drive information................................. 124
Dynamic radar cruise control ......257
LDA (Lane Departure Alert) ....... 274
Multi-information display................... 121
Warning message ............................ 542
Distance ..................................................... 124
Do-it-yourself maintenance ............. 469
Door courtesy lights
Location ................................................. 446
Door lock
Doors......................................................... 144
Smart entry & start system ............. 155
Wireless remote control ................. 138
Doors...........................................................144
Automatic door locking and
unlocking system ............................. 147
Door lock ................................................ 144
Open door warning buzzer .......... 145
Open door warning light .............. 539
Outside rear view mirrors .............. 193
Side windows ........................................ 196
Drive info 1/Drive info 2 ......................126
Drive information ................................... 124
Resetting .................................................. 124
D

627Alphabetical index
RC300h_EE(OM24740E)
Driver’s and front passenger’s
seat belt reminder light ..................539
Driver’s seat position memory ......... 183
Driving .......................................................206
Break-in tips ......................................... 207
Correct driving posture .................... 36
Driving mode select switch ........... 301
Hybrid vehicle driving tips ............ 334
Procedures ...........................................206
Winter drive tips................................. 337
Dynamic radar cruise control.......... 257
E-mail ........................................................ 405
ECB (Electronically Controlled
Brake System) .................................... 304
Eco drive mode ...................................... 301
Elapsed time ............................................. 124
Electric motor (traction motor) ......... 85
Electric Power Steering (EPS) ....... 304
Warning light....................................... 538
Electronic key ......................................... 138
Battery-saving function .................... 157
If the electronic key does not
operate properly ............................ 578
Replacing the battery ..........................511
Electronically Controlled
Brake System (ECB) ....................... 304
Emergency brake signal....................305
Emergency flashers ............................. 528
Emergency tire puncture
repair kit ................................................ 563
Emergency, in case of
If a warning buzzer sounds .......... 537
If a warning light turns on .............. 537
If a warning message is
displayed ............................................ 542
If the 12-volt battery is
discharged ........................................ 582
If the electronic key does not
operate properly ............................ 578
If the hybrid system will not
start ....................................................... 576
If you have a flat tire.......................... 563
If you think something
is wrong .............................................. 536
If your vehicle becomes stuck .... 592
E

628Alphabetical index
RC300h_EE(OM24740E)
If your vehicle has to be
stopped in an emergency..........529
If your vehicle needs to
be towed............................................ 530
If your vehicle overheats ................587
Energy monitor....................................... 129
Engine....................................................... 598
ACCESSORY mode .......................216
Compartment...................................... 473
Engine switch.........................................215
Hood .......................................................... 471
How to start the hybrid system.....215
Identification number ....................... 597
If the hybrid system will not
start ........................................................ 576
Ignition switch (power switch) ......215
Overheating .........................................587
Power switch .........................................215
Engine coolant ....................................... 478
Capacity .................................................. 601
Checking ............................................ 478
Preparing and checking
before winter .................................... 337
Engine coolant temperature
gauge.........................................................115
Engine oil.................................................. 474
Capacity ................................................ 599
Checking ............................................... 474
Preparing and checking
before winter .................................... 337
Engine oil maintenance data............ 476
Engine switch .......................................... 215
EPS (Electric Power Steering)........304
Warning light ...................................... 538
EV drive mode ....................................... 220
EV indicator ............................................. 126
First-aid kit storage belt ..................... 452
Flat tire
Vehicles with emergency
tire puncture repair kit ................. 563
Floor mats ................................................... 34
Fluid
Brake ....................................................... 603
Hybrid transmission ......................... 602
Washer...................................................480
Fog lights .................................................. 239
Replacing light bulbs ....................... 525
Switch ...................................................... 239
Follow me home system .................... 233
Footwell light .......................................... 446
Wattage .................................................605
Front fog lights ....................................... 239
Replacing light bulbs ....................... 525
Switch ...................................................... 239
Front personal lights............................ 448
Front position lights ............................. 232
Light switch............................................232
Replacing light bulbs ....................... 525
Front seats .................................................178
Adjustment ............................................. 178
Cleaning ................................................ 464
Correct driving posture.................... 36
Driving position memory ................ 183
Head restraints .....................................186
Jam protection function ................... 179
Seat heaters.......................................... 445
Seat position memory .......................183
Seat ventilators ................................... 445
Front turn signal lights ........................ 229
Replacing light bulbs ...........520, 525
Turn signal lever..................................229
F

629Alphabetical index
RC300h_EE(OM24740E)
Wattage................................................. 605
Fuel ............................................................. 249
Capacity ................................................ 598
Fuel gauge................................................ 115
Information ........................................... 606
Refueling ................................................ 249
Type .............................................598, 606
Warning light .......................................539
Fuel consumption
Average fuel economy ..................... 124
Current fuel consumption............... 124
Fuel filler door ........................................ 249
If the fuel filler door
cannot be opened ...........................251
Refueling ................................................ 249
Fuel gauge .................................................. 115
Fuses ........................................................... 514
Gauges ........................................................ 115
Glove box................................................ 450
Glove box light ...................................... 450
Hands-free system
(for cellular phone) ........................... 397
Head restraints ....................................... 186
Headlight cleaner................................... 241
Headlights ............................................... 232
Automatic High Beam
system.................................................. 235
Follow me home system................ 233
Light switch............................................232
Replacing light bulbs ....................... 525
Heaters
Air conditioning system ..................432
Heated steering wheel ................... 444
Outside rear view mirrors ............ 438
Seat heaters.......................................... 445
High-voltage components .................. 89
Hill-start assist control ........................ 304
Hood ............................................................ 471
Open ......................................................... 471
Pop Up Hood ........................................ 56
Hooks
Cargo hooks ....................................... 452
Coat hooks........................................... 458
Retaining hooks (floor mat) .............34
Horn ............................................................ 190
Hybrid battery (traction battery) ...... 89
Hybrid battery (traction battery)
air vents .................................................... 90
Hybrid system ........................................... 85
Emergency shut off system ............. 90
G
H

630Alphabetical index
RC300h_EE(OM24740E)
Energy monitor/
consumption screen.......................129
EV drive mode ................................... 220
High voltage components ...............89
Hybrid System Indicator ................... 119
Hybrid system precautions..............89
Hybrid vehicle driving tips ............ 334
If the hybrid system
will not start ....................................... 576
Overheating .........................................587
Power (ignition) switch .....................215
Starting the hybrid system...............215
Hybrid System Indicator .......................119
Hybrid transmission ............................. 222
If the shift lever cannot be
shifted from P ....................................227
Paddle shift switches ............ 224, 225
S mode .................................................... 225
Identification
Engine ..................................................... 597
Vehicle.................................................... 597
Ignition switch (power switch) ..........215
Illuminated entry system .....................447
Immobilizer system ................................. 95
Indicators .................................................... 112
Initialization
Maintenance ........................................ 476
Meter ......................................................... 126
Moon roof ............................................... 201
Multi-information display................. 126
Power windows ................................... 197
Tire pressure warning
system.................................................. 487
Initiators (tire pressure warning
system)................................................... 497
Inside rear view mirror .......................... 191
Instrument panel light control ............ 118
Interior lights............................................447
Intrusion sensor and tilt sensor ........ 105
ISOFIX rigid anchors .............................75
I