2015 Lexus GS300h power steering

4807-2. Steps to take in an emergency
GS450h_300h_OM_OM30F00E_(EE)
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air
leaks and tire inflation pressure changes caused by temperature. In this case, adjusting
the tire inflation pressure will turn off the warning light (after a few minutes).
■When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning valve and transmit-
ter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat
tire has been replaced with the spare tire.
■Conditions that the tire pressure warning system may not function properly
→P. 4 3 6
■If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the
power switch is turned to ON mode, have it checked by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
■Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an audio sound.
WA R N I N G
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional. The vehicle will
become extremely unstable during braking, and the ABS system may fail, which could
cause an accident resulting 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 us ual 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 precautions. 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 any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
●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.

5157-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F00E_(EE)

Power was turned off due to the
automatic power off function.
→Next time when starting the
hybrid system, operate the
hybrid system for approximately
5 minutes to recharge the 12-
volt battery.
OnceThe electronic key has a low battery.
→Replace the electronic key bat-
tery. ( →P. 4 5 1 )
Once
The driver’s door was opened and
closed with the power switch turned
off and then the power switch was
put in ACCESSORY mode twice
without the hybrid system being
started.
→ Press the power switch while
depressing the brake pedal.
During an hybrid system starting
procedure in the event that the elec-
tronic key was not functioning prop-
erly ( →P. 5 4 9 ) , t h e p o w e r s w i t c h
was touched with the electronic key.
→ Press the power switch within 10
seconds of the buzzer sounding.
Once
The steering lock could not be
released within 3 seconds of the
power switch being pressed.
→Press the power switch while
depressing the brake pedal and
moving the steering wheel left
and right.
Interior
buzzerExteriorbuzzerWarning messageDetails/Actions
(Flashes)

599What to do if... (Troubleshooting)
GS450h_300h_OM_OM30F00E_(EE)
●The function to prevent the electronic 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. 1 4 8 )
●Did you press the power switch while firmly depressing the brake pedal?
(→ P. 2 1 7 )
●Is the shift lever in P? ( →P. 2 1 9 )
●Is the electronic key anywhere detectable inside the vehicle? ( →P. 1 5 3 )
●Is the steering wheel unlocked? ( →P. 2 1 9 )
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. ( →P. 5 4 9 )
●Is the 12-volt battery discharged? ( →P. 5 5 1 )
●Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
power switch in ON mode ( →P. 545)
●It is locked automatically to prevent theft of the vehicle. ( →P. 2 1 9 )
The trunk lid is closed with the electronic key left inside
If you think som
ething is wrong
The hybrid system 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 hybrid system is stopped

605Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
DAB (Digital Audio Broadcast)*
Daytime running light system ......... 239
DefoggerFront windshield ................................. 372
Outside rear view mirrors............. 372
Rear window ........................................ 372
Differential ............................................... 574
Digital Audio Broadcast (DAB)
*
Dimensions.............................................. 566
Display 12.3-inch display ................................ 364
Drive information .................................. 113
Dynamic radar cruise control ...... 315
Dynamic radar cruise control with full-speed range....................303
Energy monitor.....................................126
LDA (Lane Departure Alert with steering control) ................... 293
LKA (Lane-Keeping Assist) .........285
Multi-information display .................... 111
Trip information ................................... 104
Warning message.............................482
Do-it-yourself maintenance .............. 415
Door courtesy lights Location................................................. 386
Wattage..................................................578
Door lock
Doors .........................................................139
Smart entry & start system ............. 153
Wireless remote control ..................134 Doors...........................................................139
Automatic door locking and
unlocking system ............................. 143
Door glasses.......................................... 193
Door lock ................................................ 142
Open door warning buzzer .......... 154
Outside rear view mirrors ..............190
Rear door child-protector ............. 143
Double locking system.......................... 89
Drive info 1/Drive info 2/ Drive info 3 ............................................. 113
Drive information .................................... 116
Drive-start control ..................... 201, 228
Driver’s seat position memory ..........178
Driving position memory ................ 179
Memory recall function ..................... 181
Power easy access system............. 178
Driving ...................................................... 200
Break-in tips........................................... 201
Correct driving posture.................... 36
Driving mode select switch.......... 330
Hybrid vehicle driving tips .............. 351
Procedures........................................... 200
Winter drive tips ................................ 354
DRS (Dynamic Rear Steering) ....... 345 Function.................................................. 345
Warning message ............................ 482
Dynamic radar cruise control ...........315
Function.................................................... 315
Warning message ............................ 482
D
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

606Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Dynamic radar cruise control with full-speed range .......................303
Function ..................................................303
Warning message.............................482
Dynamic Rear Steering (DRS)........345 Function ..................................................345
Warning message.............................482
DVD player
*
Eco drive mode .....................................330
Electric motor (traction motor) ......... 75
Electric Power Steering (EPS)........345 Function ..................................................345
Warning light ....................................... 477
Warning message.............................482
Electronic key.......................................... 134 Battery-saving function.................... 155
If the electronic key does not operate properly ........................... 548
Replacing the battery.........................451
Emergency, in case of
If a warning buzzer sounds .......... 476
If a warning light turns on............... 476
If a warning message is displayed ............................................ 482
If the 12-volt battery is discharged.......................................... 551
If the electronic key does not operate properly ........................... 548
If the hybrid system will not start ........................................................543
If the parking brake cannot be released........................................546 If the shift lever cannot be
shifted from P................................... 545
If you have a flat tire................517, 528
If you think something is wrong .............................................. 475
If your vehicle becomes stuck .... 563
If your vehicle has to be stopped in an emergency ......... 469
If your vehicle needs to be towed ............................................ 470
If your vehicle overheats................ 556
Emergency brake signal.................... 345
Emergency flashers............................. 468
Emergency tire puncture
repair kit ................................................ 528
Energy monitor ....................................... 126
Engine ....................................................... 568 Accessory mode ................................. 218
Compartment ....................................... 419
Engine switch ........................................ 217
Hood ......................................................... 417
How to start the hybrid
system.................................................... 217
Identification number.......................568
Ignition switch (power switch) .................................. 217
Overheating ........................................ 556
Power switch ......................................... 217
Engine compartment cover ...............421
Engine coolant....................................... 425 Capacity..................................................572
Checking ............................................... 425
Preparing and checking before winter.................................... 354
E

607Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Engine coolant temperature gauge....................................................... 105
Engine oil.................................................. 422 Capacity .................................................570
Checking ............................................... 422
Oil level warning message ........... 482
Oil pressure warning message..............................................482
Preparing and checking before winter ....................................354
Engine switch ...........................................217 Auto power off function ...................219
Changing the power switch modes ................................................... 218
If your vehicle has to be stopped in an emergency..........469
Starting the hybrid system............... 217
EPS (Electric Power Steering)........345
Function ..................................................345
Warning light ....................................... 477
Warning message.............................482
EV drive mode ....................................... 222
First-aid kit storage net.......................395
Flat tire
Vehicles with spare tire ....................517
Vehicles without spare tire ...........528
Floor mats ................................................... 34
Fluid Brake........................................................ 574
Hybrid transmission ......................... 573
Washer ................................................... 427 Fog lights .................................................. 249
Replacing light bulbs ....................... 465
Switch ...................................................... 249
Follow me home system .................... 237
Footwell light .......................................... 386
Front air conditioning system .......... 366
Front fog lights ....................................... 249 Replacing light bulbs ....................... 465
Switch ...................................................... 249
Wattage ................................................. 465
Front personal lights............................ 387
Front position lights ............................. 236 Light switch........................................... 236
Replacing light bulbs ....................... 465
Welcome light illumination control ...................................................140
Front seats ................................................. 175 Adjustment ............................................. 175
Cleaning .................................................. 410
Correct driving posture.................... 36
Driving position memory ................ 178
Head restraints .....................................183
Power easy access system............. 178
Seat heaters.......................................... 382
Seat position memory ....................... 178
Seat ventilators ................................... 382
Front turn signal lights ........................ 230 Replacing light bulbs ...........459, 465
Turn signal lever................................. 230
Wattage ................................................. 578
F
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

610Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
JackPositioning the jack ............................ 418
Vehicle-equipped jack ........ 518, 529
Jack handle................................... 518, 529
Jam protection function Moon roof ...............................................197
Power trunk lid......................................149
Power window ......................................193
Keyless entry ........................................... 153 Smart entry & start system ............. 153
Wireless remote control ..................134
Keys ............................................................. 134 Battery-saving function.................... 155
Electronic key ........................................134
Engine switch......................................... 217
If the electronic key does not operate properly ........................... 548
If you lose your keys ................ 136, 137
Key number plate ................................134
Keyless entry ............................... 134, 153
Mechanical key.................................... 135
Power switch ......................................... 217
Replacing the battery.........................451
Warning buzzer ...................................154
Wireless remote control key .........134
Knee airbags.............................................. 43 Language (multi-information
display) .................................................. 582
LDH (Lexus Dynamic Handling
system)................................................... 345
Lever
Auxiliary catch lever........................... 417
Hood lock release lever .................. 417
Shift lever ................................................224
Turn signal lever................................. 230
Wiper lever .......................................... 250
Lexus Dynamic Handling system
(LDH) ..................................................... 345
Lexus parking assist monitor
*
Lexus parking assist-sensor*
Function*
Warning message ............................ 482
Lexus Safety System+......................... 260
AHS (Adaptive High-beam System) ............................................... 240
Automatic High Beam ................... 245
Dynamic radar cruise control ....... 315
Dynamic radar cruise control with full-speed range ................... 303
LDA (Lane Departure Alert with steering control)................... 290
LKA (Lane-Keeping Assist) .......... 281
PCS (Pre-Crash Safety system) ................................................ 269
RSA (Road Sign Assist) ................. 298
License plate lights .............................. 236 Light switch........................................... 236
Replacing light bulbs ....................... 465
Welcome light illumination
control ...................................................140
J
K
L

612Alphabetical index
GS450h_300h_OM_OM30F00E_(EE)
Multi-information display ...................... 111Audio system-linked ............................. 111
Drive information .................................. 113
Dynamic radar cruise control ...... 315
Dynamic radar cruise control with full-speed range....................303
G-force...................................................... 114
LDA (Lane Departure Alert with steering control) ...................290
LKA (Lane-Keeping Assist) .......... 281
Navigation system-linked................... 111
Settings....................................................... 115
Switch settings........................................ 115
Switching the display ...........................112
nanoe  system ..................................... 376
Navigation system
*
Odometer................................................. 105
Oil Differential oil ....................................... 574
Engine oil ...............................................570
Opener
Fuel filler door......................................256
Hood .......................................................... 417
Trunk ..........................................................146
Outer foot lights
Location................................................. 386
Replacing light bulbs..........................461
Wattage..................................................578 Outside rear view mirrors ................. 190
Adjusting and folding ........................190
BSM (Blind Spot Monitor) ........... 333
Linked mirror function
when reversing ...................................191
Mirror position memory .................. 178
Outside rear view mirror defoggers .......................................... 372
Outside temperature display ........... 105
Overheating ........................................... 556
Paddle shift switches ........................... 226
Parking assist sensors
*
Parking brake...........................................231 If the parking brake cannot
be released ....................................... 546
Operation ............................................... 231
Parking brake engaged warning buzzer............................... 482
Parking brake engaged warning message .......................... 482
PCS (Pre-Crash Safety system)............ 269
Function.................................................. 269
Warning light........................................ 477
Warning message ............................ 482
Personal lights........................................ 387
Pollen removal mode.......................... 372
Power control unit ...................................79
N
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