power steering Lexus GS350 2018 Owner's Guide

4397-2. Steps to take in an emergency
GS350_300_GS F_OM_OM30G34U_(U)
7
When trouble arises
■Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an audio sound.
■Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features: →P. 545)
WARNING
■If both the ABS and the brake sy stem warning lights remain on
Stop your vehicle in a safe place immediat ely and contact your Lexus dealer. The vehi-
cle will become extremely unstable during br aking, and the ABS system may fail, which
could cause an accident resultin g in death or serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold firmly and oper-
ate using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precaution s. Failure to do so could cause a loss of
vehicle control and result in death or serious injury.
●Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure
immediately.
●If the tire pressure warning light comes on even after tire inflation pressure adjust-
ment, it is probable that you have a flat tire . Check the tires. If a tire is flat, change it
with the spare tire and have the flat tire repaired by the nearest Lexus dealer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose
control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

4967-2. Steps to take in an emergency
GS350_300_GS F_OM_OM30G34U_(U)
WARNING
■Driving to spread the liquid sealant evenly
●Drive the vehicle carefully at a low speed. Be especially careful when turning and cor-
nering.
●If the vehicle does not drive straight or you feel a pull through the steering wheel, stop
the vehicle and check the following:
• Tire condition. The tire may have separated from the wheel.
• Tire inflation pressure. If tire inflation pressure is 19 psi (130 kPa, 1.3 kgf/cm
2 or
bar) or less, the tire may be severely damaged.
NOTICE
■When performing an emergency repair
●Perform the emergency repair without removi ng the nail or screw that has punctured
the tread of the tire. If the object that has punctured the tire is removed, repair by the
emergency tire puncture repair kit may not be possible.
●The repair kit is not waterproof. Make sure that the repair kit is not exposed to water,
such as when it is be ing used in the rain.
●Do not put the repair kit directly onto dusty ground such as sand at the side of the
road. If the repair kit vacuums up dust etc., a malfunction may occur.
■Handling the emergency tire puncture repair kit
●The repair kit power source should be 12 V DC suitable for vehicle use. Do not con-
nect the repair kit to any other source.
●If gasoline splatters on the repair kit, the repair kit may deteriorate. Take care not to
allow gasoline to contact it.
●Store the emergency tire puncture repair kit in the trunk.
The kit may be thrown around during sudden braking and so forth, damaging the kit.
●Store the repair kit in the tr unk out of reach of children.
●Do not disassemble or modify the repair kit. Do not subject parts such as the air pres-
sure indicator to impacts. This may cause a malfunction.
■To avoid damage to the tire pressu re warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-
mitter may not operate properly. If a liquid sealant is used, contact your Lexus dealer or
other qualified service shop as soon as possible. Make sure to replace the tire pressure
warning valve and transmitter when replacing the tire. ( →P. 394)

540
GS350_300_GS F_OM_OM30G34U_(U)8-1. Specifications
■Temperature A, B, C
The temperature grades are A (the highes
t), B, and C, representing the tire’s
resistance to the generation of heat and its ability to dissipate heat when
tested under controlled conditions on a specified indoor laboratory test
wheel.
Sustained high temperature can cause the ma terial of the tire to degenerate and
reduce tire life, and excessive temperature can lead to sudden tire failure.
Grade C corresponds to a level of perfor mance which all passenger car tires must
meet under the Federal Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of performance on the laboratory test
wheel than the minimum required by law.
Warning: The temperature grades of a tire assume that it is properly inflated and
not overloaded.
Excessive speed, underi nflation, or excessive loading, either separately or in com-
bination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pressure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more than 1
mile or 1.5 km un der that condition
Maximum inflation pres-
sureThe maximum cold inflated pr essure to which a tire may
be inflated, shown on the sidewall of the tire
Recommended inflation
pressureCold tire inflation pressure recommended by a manu-
facturer
Accessory weight
The combined weight (in exce ss of those standard items
which may be replaced) of automatic transmission,
power steering, power brakes, power windows, power
seats, radio and heater, to the extent that these items are
available as factory-installed equipment (whether
installed or not)
Curb weight
The weight of a motor vehicle with standard equipment,
including the maximum capacity of fuel, oil and coolant,
and if so equipped, air co nditioning and additional
weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the numb er of occupants specified
in the second column of Table 1
* that follows

577What to do if... (Troubleshooting)
GS350_300_GS F_OM_OM30G34U_(U)
●Did you press the engine switch while firmly depressing the brake pedal?
(→ P. 197)
●Is the shift lever in P? ( →P. 199)
●Is the electronic key anywhere detectable inside the vehicle? ( →P. 150)
●Is the steering wheel unlocked? (→ P. 199)
●Is the electronic key battery weak or depleted?
In this case, the engine can be started in a temporary way. (→P. 502)
●Is the battery discharged? ( →P. 504)
●Is the engine switch in IGNITION ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
engine switch in IGNITION ON mode (→ P. 208)
●It is locked automatically to prevent theft of the vehicle. ( →P. 199)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( →P. 175)
●The auto power off function will be operated if the vehicle is left in ACCES-
SORY or IGNITION ON mode (the engine is not running) for a period of
time. ( →P. 199)
If you think something is wrong
The engine does not start
The shift lever cannot be shifted from P even if you depress the brake
pedal
The steering wheel cannot be turned after the engine is stopped
The windows do not open or close by operating the power window
switches
The engine switch is turned off automatically

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

590Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
Outer foot lightsOuter foot lights ................................. 327
Replacing light bulbs ........................420
Wattage ................................................... 531
Outside rear view mirrors ................... 171 Adjusting and folding.......................... 171
Blind Spot Monitor............................278
Linked mirror function when reversing ..................................173
Mirror position memory .................. 160
Outside rear view mirror defoggers ............................. 314
Outside temperature display ..... 87, 94
Overheating, Engine ..........................509
Paddle shift switches ........................... 204
Parking assist sensors (intuitive parking assist)
*
Parking brake............................................ 211 If the parking brake cannot be released ....................... 499
Operation ................................................. 211
Parking brake engaged warning buzzer ................................ 441
Parking brake engaged warning message ............................ 441
Parking lights ............................................216 Light switch ............................................ 216
Replacing light bulbs ........................420
Welcome light illumination control ......................... 138 PCS (Pre-Collision System)............ 238
Function .................................................. 238
Warning light ....................................... 435
Warning message............................... 441
Personal lights ....................................... 328
Power easy access system .................160
Pop-up display ............................... 105, 117
Power outlets ......................................... 340
Power steering (Electric Power Steering system)................................ 289 Warning light ....................................... 435
Warning message............................... 441
Power trunk opener and closer ....... 143
Power windows....................................... 175 Door lock linked window operation ........................... 176
Jam protection function.................... 175
Operation................................................ 175
Window lock switch .......................... 175
Pre-Collision System (PCS)............ 238 Function .................................................. 238
Warning light ....................................... 435
Warning message............................... 441
P

593Alphabetical index
GS350_300_GS F_OM_OM30G34U_(U)
S-FLOW mode ..................................... 309
Shift lever ................................................. 202Automatic transmission ..................202
If the shift lever cannot be shifted from P ........... 208
Shift lever light ....................................... 327
Shift lock system.................................... 207
Side airbags ............................................... 42
Side display ............................................. 306
Side marker lights...................................216 Light switch ............................................ 216
Replacing light bulbs ........................420
Welcome light illumination control ................................................... 138
Side mirrors ............................................... 171 Adjusting and folding.......................... 171
BSM (Blind spot monitor) .............278
Linked mirror function when reversing ..................................173
Mirror position memory .................. 160
Side turn signal lights ........................... 210 Replacing light bulbs ........................420
Turn signal lever .................................. 210
Smart access system with push-button start ...................... 150 Antenna location ................................. 150
Entry functions .......................................137
Starting the engine ..............................197
Warning message .............................. 441
Snow mode ............................................. 203
Snow tires ................................................300 Spare tire .................................................. 472
Inflation pressure................................528
Storage location ................................. 473
Spark plug ............................................... 525
Specifications...........................................518
Speed indicator........................................ 95
Speedometer .................................... 87, 94
Sport mode .............................................. 273
Steering lock ............................................ 199 Column lock release .........................199
Steering lock system warning message........................... 470
Steering wheel ........................................168 Adjustment............................................. 168
Audio switches
*
Heated steering wheel ................... 322
Power easy access system ............ 160
Steering wheel position memory ............................. 160
Stop lights Replacing light bulbs ....................... 420
Storage feature ..................................... 330
Storage precautions ........................... 330
Stuck If the vehicle becomes stuck......... 515
Sun shade Rear ............................................................ 341
Rear door ................................................ 341
Roof ............................................................ 179
Sun visors................................................. 338
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.