2018 Lexus GS350 warning light

578What to do if... (Troubleshooting)
GS350_300_GS F_OM_OM30G34U_(U)
●The seat belt reminder light is flashing
Are the driver and the front passe nger wearing the seat belts? (→P. 436)
●The parking brake indicator is on
Is the parking brake released? ( →P. 211)
Depending on the situation, other types of warning buzzer may also sound.
(→ P. 434, 441)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. (→ P. 74)
To stop the alarm, turn the engine switch to IGNITION ON mode or start the
engine.
●Is the electronic key left inside the vehicle or the moon roof opened?
Check the message on the multi-information display. (→ P. 441)
●When a warning light turns on or a warning message is displayed, refer to
P. 434, 441.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

580Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Alphabetical index
A/C ............................................................308Air conditioning filter....................... 408
Changing the rear seat settings .................................................. 315
Front automatic air conditioning system ................................................. 308
Micro dust and pollen filter ............ 314
Rear air conditioning system......... 319
S-FLOW mode ................................. 309
ABS (Anti-lock Brake System).......288 Function ................................................. 288
Warning light .......................................434
Warning message .............................. 441
Active Sound Control (ASC) ...........215
Adaptive Front-lighting System (AFS) ........................................................ 217
Adaptive Variable Suspension system (AVS)...................................... 289
AFS (Adaptive Front-lighting System) .................................................... 217
Air conditioning filter ..........................408
Air conditioning system .....................308 Air conditioning filter....................... 408
Changing the rear seat settings .................................................. 315
Front automatic air conditioning system ................................................. 308
Micro dust and pollen filter ............ 314
Rear air conditioning system......... 319
S-FLOW mode ................................. 309 Airbags .......................................................... 41
Airbag operating conditions .......... 48
Airbag precautions for your child ....................................... 44
Airbag warning light ........................ 434
Correct driving posture .................... 34
Curtain shield airbag operating conditions ....................... 48
Curtain shield airbag precautions .......................................... 46
Front passenger occupant classification system......................... 52
General airbag precautions ........... 44
Locations of airbags.............................. 41
Modification and disposal of airbags................................................47
Side airbag operating conditions ............................................. 48
Side airbag precautions .................... 44
Side and curtain shield airbags operating conditions ....................... 48
Side and curtain shield airbags precautions .......................................... 44
SRS airbags ............................................... 41
Alarm ............................................................ 74 Alarm ...........................................................74
Warning buzzer....................... 434, 441
Anchor brackets.......................................63
Antennas (smart access system with push-button start) .....................150
Anti-lock Brake System (ABS) ...... 288 Function ..................................................288
Warning light ....................................... 434
Warning message............................... 441
A

581Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Approach warning............................... 265
Armrest .................................................... 340
Armrest door ......................................... 343
ASC (Active Sound Control) ...........215
Ashtrays.................................................... 339
Assist grips .............................................. 344
Audio input
*
Audio system*
Automatic headlight leveling system ..................................................... 218
Automatic light control system.........216
Automatic transmission ..................... 202 If the shift lever cannot be shifted from P .................................. 208
M mode ................................................. 205
Paddle shift switches ........................204
AUX port
*
Auxiliary boxes ...................................... 333
AVS (Adaptive Variable Suspension system).......................... 289
Back-up lights Replacing light bulbs ........................420
Battery....................................................... 390
Battery checking................................... 390 If the vehicle battery is discharged ........................................ 504
Preparing and checking before winter ....................................................296
Warning light .......................................434 Blind Spot Monitor (BSM) ................278
Blind Spot Monitor function...........281
Rear Cross Traffic Alert function................................................ 283
Bluetooth
®*
Brake Fluid ..........................................................389
Parking brake ..........................................211
Warning light ........................... 434, 436
Warning message............................... 441
Brake assist ............................................. 288
Brake Hold................................................ 213
Break-in tips .............................................183
Brightness control Instrument panel light control............................................ 89, 97
BSM (Blind Spot Monitor) ................278 Blind Spot Monitor function...........281
Rear Cross Traffic Alert function................................................ 283
Card key .................................................... 132
Care................................................358, 362 Aluminum wheels ..............................359
Exterior ...................................................358
Interior ..................................................... 362
Seat belts................................................ 363
Cargo capacity ....................................... 194
Cargo hooks .......................................... 334
CD player
*
Chains ....................................................... 298
BC
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

583Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Dimensions .............................................. 518
Dinghy towing..........................................196
Display12.3-inch display................................ 306
Drive information ..................... 102, 109
Dynamic radar cruise control with full-speed range ................... 258
Energy monitor ..................................... 127
LKA (Lane-Keeping Assist) .........253
Multi-information display .....100, 108
Trip information ............................ 78, 92
Warning message .............................. 441
Do-it-yourself maintenance ............... 371
Door courtesy lights Location .................................................. 327
Door lock Doors .........................................................137
Smart access system with push-button start ............................. 150
Wireless remote control ..................137
Doors........................................................... 137 Automatic door locking and unlocking system.................... 140
Door glasses ......................................... 175
Door lock ................................................ 139
Open door warning buzzer............ 151
Open door warning light...............436
Outside rear view mirrors ................ 171
Rear door child-protector.............. 140 Drive info 1/Drive info 2/
Drive info 3................................... 105, 116 Drive information...................... 102, 109
Resetting ....................................... 102, 109
Drive-Start Control................... 183, 207
Driver’s seat position memory.......... 160 Driving position memory.................. 161
Memory recall function .................... 162
Power easy access system ............ 160
Driving ........................................................ 182 Break-in tips .......................................... 183
Correct driving posture .................... 34
Driving mode select switch ...........273
Procedures .............................................182
Winter drive tips ................................ 296
DRS (Dynamic Rear Steering) ....... 289 Function .................................................. 289
Warning message............................... 441
DVD player
*
Dynamic radar cruise control with full-speed range Function ..................................................258
Warning message............................... 441
Dynamic Rear Steering (DRS) ....... 289 Function .................................................. 289
Warning message............................... 441
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

584Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Eco drive mode ..................................... 273
Eco Driving Indicator............................. 85
Eco driving meter .................................... 92
EDR (Event data recorder) ...................10
Electric Power Steering (EPS) ....... 289Function ................................................. 289
Warning light .......................................435
Warning message .............................. 441
Electronic key ..........................................132 Battery-saving function .................... 152
If the electronic key does not operate properly.............................. 501
Replacing the battery ........................ 410
Emergency, in case of If a warning buzzer sounds...........434
If a warning light turns on...............434
If a warning message is displayed ......................................... 441
If the electronic key does not operate properly ......... 501
If the engine will not start................ 497
If the parking brake cannot be released ....................... 499
If the vehicle battery is discharged ........................................ 504
If you have a flat tire ..............472, 483
If you think something is wrong............................................... 432
If your vehicle becomes stuck ...... 515
If your vehicle has to be stopped in an emergency .............................425
If your vehicle needs to be towed .......................................426
If your vehicle overheats ............... 509 Emergency flashers .............................424
Emergency tire puncture repair
kit ............................................................. 483
Engine Accessory mode ................................ 198
Compartment ..................................... 376
Engine switch ........................................ 197
Hood........................................................ 373
How to start the engine.................... 197
Identification number.......................520
Ignition switch (engine switch.................................... 197
Overheating........................................ 509
Engine compartment cover..............379
Engine coolant ...................................... 386 Capacity................................................. 525
Checking ...............................................386
Preparing and checking before winter .................................... 296
Engine coolant temperature gauge ................................................ 86, 94
Engine immobilizer system .................. 72
Engine oil ...................................................381 Capacity................................................. 522
Checking ................................................ 381
Oil level warning message ............. 441
Oil pressure warning message............................. 441
Preparing and checking before winter .................................... 296
E

585Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Engine oil maintenance data ........... 366
Engine switch ........................................... 197Auto power off function................... 199
Changing the engine switch modes ................................................... 198
If your vehicle has to be stopped in an emergency ..........425
Starting the engine ..............................197
EPS (Electric Power Steering) ....... 289 Function ................................................. 289
Warning light .......................................435
Warning message .............................. 441
Event data recorder (EDR) ...................10
Expert mode ........................................... 292
First-aid kit storage net ...................... 335
Flat tire Vehicles with spare tire .................. 472
Vehicles without spare tire .......... 483
Floor mats ................................................... 32
Fluid Automatic transmission ..................526
Brake ........................................................ 527
Washer ...................................................392
Footwell light .......................................... 327
Front passenger occupant classification system ............................ 52
Front personal lights............................ 328 Front seats .................................................158
Adjustment............................................. 158
Cleaning................................................. 362
Correct driving posture .................... 34
Driving position memory................ 160
Head restraints .....................................165
Power easy access system ............ 160
Seat heaters .......................................... 323
Seat position memory ...................... 160
Seat ventilators.................................... 323
Front side marker lights....................... 216 Light switch............................................. 216
Replacing light bulbs ....................... 420
Welcome light illumination control................................................... 138
Front turn signal lights .......................... 210 Replacing light bulbs ............ 419, 420
Turn signal lever ...................................210
Wattage ...................................................531
Fuel Capacity................................................... 521
Fuel gauge ...................................... 87, 94
Fuel pump shut off system ............ 433
Information............................................ 532
Type............................................................ 521
Warning light ....................................... 436
Warning messages ............................ 441
Fuel consumption Average fuel consumption............................ 102, 109
Average fuel consumption after refueling .......................... 102, 109
Current fuel consumption.... 102, 109
F

586Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Fuel filler door ........................................ 228When the fuel filler door cannot be opened ........................ 230
Fuel pump shut off system................. 433
Fuses ............................................................ 412
Garage door opener .......................... 345
Gauges ................................................ 86, 92
Glove box ..................................................331
Glove box light ........................................331
Hands-free system (for cellular phone)
*
HD Radio® system*
Head restraints ........................................165
Headlights .................................................216 Adaptive Front-lighting System (AFS) ..................................... 217
Automatic High Beam system ..... 219
Headlight leveling warning message ............................ 441
Light switch ............................................ 216
Replacing light bulbs ........................420
Headlights aim ............................. 416, 573
Head-up display..................................... 120
Heated steering wheel ....................... 322 Heaters
Air conditioning system ................ 308
Heated steering wheel ................... 322
Seat heaters .......................................... 323
Outside rear view mirrors .............. 314
Hill-start assist control ....................... 288
Hood ..........................................................373 Open ....................................................... 373
Warning message............................... 441
Hooks Cargo hooks ....................................... 334
Coat hooks ........................................... 344
Luggage hook..................................... 334
Retaining hooks (floor mat)..............32
Horn.............................................................168
I/M test ..................................................... 370
Identification............................................. 519 Engine .....................................................520
Vehicle ......................................................519
Ignition switch (engine switch) ......... 197 Auto power off function ...................199
Changing the engine switch modes ................................................... 198
If your vehicle has to be stopped in an emergency.......... 425
Starting the engine ............................. 198
Illuminated entry system ................... 329
Immobilizer system ................................. 72
Indicators ...................................................... 81
G
H
I

587Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
InitializationItems to initialize................................. 560
Maintenance........................................ 366
Moon roof ...............................................179
Power windows ....................................176
Tire pressure warning system............................... 395
Initiators (tire pressure warning system).................................. 401
Inside door handle lights ................... 327
Inside rear view mirror .........................169
Instrument panel light control .... 89, 97
Interior lights........................................... 327
Intuitive parking assist
*
Function*
Warning message .............................. 441
Jack Positioning a floor jack .................... 374
Vehicle-equipped jack............................................ 473, 485
Jack handle ..................................473, 485
Jam protection function Moon roof ...............................................179
Power trunk opener and closer............................................ 145
Power windows ................................... 175 Keyless entry ............................................150
Smart access system with push-button start................... 150
Wireless remote control.................. 137
Keys ............................................................. 132 Battery-saving function .................... 152
Electronic key ........................................ 132
Engine switch ........................................ 197
If the electronic key does not operate properly ......... 501
If you lose your keys................ 134, 135
Key number plate ................................ 132
Keyless entry ............................... 137, 150
Mechanical key..................................... 133
Engine switch ........................................ 197
Replacing the battery ........................410
Warning buzzer.................................... 151
Wireless remote control key ......... 137
Knee airbags ............................................... 41
J
K
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.