2019 Lexus GS300 lane assist

4547-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
Indicates a malfunction in the cruise control system or
dynamic radar cruise control system (if equipped)
Press the “ON/OFF” button once to deactivate the
system, and then press the button again to reactivate
the system.
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the dynamic radar cruise con-
trol with full-speed range
Depress the brake pedal.
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
Indicates a malfunction in the LKA (Lane-Keeping
Assist) system
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
(If equipped)
The operation conditions of the camera sensor (tem-
perature, etc.) are not met.
When the operation conditions of the camera sen-
sor (temperature, etc.) are met, the following sys-
tems will become available.
• PCS (Pre-Collision System)
• LKA (Lane-Keeping Assist) system
• Dynamic radar cruise control with full-speed range
•Automatic High Beam
Warning messageDetails/Actions
(Flashes)

4557-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
7
When trouble arises
(If equipped)
Indicates that the system is temporarily unavailable due
to a malfunction in a sensor other than the camera sen-
sor A buzzer also sounds.
 Turn the LKA (Lane-Keeping Assist) system off, wait
for a little while, and then turn the LKA (Lane-Keep-
ing Assist) system back on.
(If equipped)
Dirt, rain, condensation, ice, snow, etc., are present on
the windshield in front of the camera sensor. The following systems may be suspended until the
problem shown in the message is resolved.
• PCS (Pre-Collision System)
• LKA (Lane-Keeping Assist) system
• Dynamic radar cruise control with full-speed range
•Automatic High Beam
 Turn the system off, remove any dirt, rain, condensa-
tion, ice, snow, etc., from the windshield, and then
turn the system back on.
(If equipped)
Indicates a malfunction in the PCS (Pre-Collision Sys-
tem)
A buzzer also sounds.
 Have the vehicle inspected by your Lexus dealer.
Warning messageDetails/Actions
(Flashes)

4587-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
Indicates an attempt was made to engage the parking
brake while drivingA buzzer also sounds.
 Press the parking brake switch. If the warning mes-
sage is still displayed, have the vehicle inspected by
your Lexus dealer.
Indicates a malfunction in the parking brake system
A buzzer also sounds.
 Press the parking brake switch. If the warning mes-
sage is still displayed, have the vehicle inspected by
your Lexus dealer.
(If equipped)
Indicates that LKA (Lane-Ke eping Assist) system cannot
be used due to the vehicle speed being too high
 Slow down.
Warning messageDetails/Actions
(U.S.A.) (Canada)

4857-2. Steps to take in an emergency
GS350_300_OM_OM30G96U_(U)
7
When trouble arises
WARNING
■When the spare tire is attached
The vehicle speed may not be correctly detected, and the following systems may not
operate correctly:
Also, not only can the following system not be utilized fully, but it may even negatively
affect the drive-train components:
•AWD system
■Speed limit when using the spare tire
Do not drive at speeds in excess of 50 mp h (80 km/h) when a spare tire is installed on
the vehicle.
The spare tire is not designed for driving at high speeds. Failure to observe this precau-
tion may lead to an accident causing death or serious injury.
■After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their storage
location to reduce the possibilit y of personal injury during a collision or sudden brak-
ing.
NOTICE
■Be careful when driving over bumps with the spare tire installed on the vehicle.
The vehicle may become lower when driving with the spare tire compared to when
driving with standard tires. Be careful when driving over uneven road surfaces.
■Driving with tire chains and the spare tire
Do not fit tire chains to the spare tire.
Tire chains may damage the vehicle body and adversely affect driving performance.
■When replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and trans-
mitter, contact your Lexus dealer as the tire pressure warning valve and transmitter
may be damaged if not handled correctly.
• ABS & Brake assist
•VSC
•TRAC
• Cruise control
• Dynamic radar cruise control with
full-speed range (if equipped)
• PCS (Pre-Collision System)
(if equipped)
•EPS
• AFS (if equipped)
• Adaptive Variable Suspension system
(if equipped) • LKA (Lane-Keeping Assist)
(if equipped)
• Tire pressure warning system
•VDIM
• Lexus parking assist monitor
• Intuitive parking assist (if equipped)
• Navigation system (if equipped)
• DRS (if equipped)
• VGRS (if equipped)
• LDH (if equipped)

554
GS350_300_OM_OM30G96U_(U)8-2. Customization
■LKA (Lane-Keeping Assist)* (
 P. 256)
*: If equipped
■PCS (Pre-Collision System)* ( P. 245)
*: If equipped
FunctionDefault
settingCustomized setting
Lane centering functionOffOn—O—
Steering assist functionOnOff—O—
Adjust alert type(Steering
vibration)(Buzzer)
—O—
Alert sensitivityStandardHigh—O—
Vehicle sway warning functionOnOff—O—
Vehicle sway warning sensitivityStandardLow—O—High
123
FunctionDefault settingCustomized setting
PCS (Pre-Collision System)OnOff—O—
Adjust alert timing
(Middle)
(Far)—O—
(Near)
123

587Alphabetical index
GS350_300_OM_OM30G96U_(U)
Dimensions ............................................. 522
Dinghy towing........................................ 202
Display12.3-inch display.................................. 314
Drive information ....................... 108, 115
Dynamic radar cruise control with full-speed range ....................266
Energy monitor .................................... 133
LKA (Lane-Keeping Assist) ........ 260
Multi-information display ....... 106, 114
Trip information ........................... 84, 98
Warning message ............................. 444
Do-it-yourself maintenance ............. 373
Door courtesy lights Location ................................................. 335
Door lock Doors ........................................................ 143
Smart access system with push-button start ............................. 156
Wireless remote control ................. 143
Doors...........................................................143 Automatic door locking and unlocking system.................... 146
Door glasses ........................................... 181
Door lock ................................................ 145
Open door warning buzzer.......... 157
Open door warning light...............439
Outside rear view mirrors ............... 177
Rear door child-protector.............. 146 Drive info 1/Drive info 2/
Drive info 3..................................... 111, 122 Drive information....................... 108, 115
Resetting ........................................ 108, 115
Drive-Start Control.....................189, 213
Driver’s seat position memory.......... 166 Driving position memory................. 167
Memory recall function ................... 168
Power easy access system .............166
Driving ....................................................... 188 Break-in tips .......................................... 189
Correct driving posture .................... 34
Driving mode select switch ............281
Procedures ............................................ 188
Winter drive tips ................................304
DRS (Dynamic Rear Steering) ........ 297 Function .................................................. 297
Warning message............................. 444
DVD player
*
Dynamic radar cruise control with full-speed range Function .................................................. 266
Warning message............................. 444
Dynamic Rear Steering (DRS) ........ 297 Function .................................................. 297
Warning message............................. 444
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.

592Alphabetical index
GS350_300_OM_OM30G96U_(U)
Language (multi-information display)....................................... 550, 552
LATCH anchors ...................................... 64
LDH (Lexus Dynamic Handling system) .............................. 297
Lever Auxiliary catch lever .........................375
Hood lock release lever .................375
Internal trunk release lever............. 152
Shift lever ............................................... 208
Turn signal lever .................................. 216
Wiper lever ........................................... 229
Lexus Dynamic Handling system (LDH)...................................... 297
Lexus Enform
*
Lexus Enform Safety Connect............72
Lexus parking assist monitor
*
Lexus Safety System +........................ 239 Automatic High Beam .................... 225
Dynamic radar cruise control with full-speed range ....................266
LKA (Lane-Keeping Assist) .........256
PCS (Pre-Collision System) ........245
License plate lights............................... 222 Light switch ........................................... 222
Replacing light bulbs ........................ 422
Welcome light illumination control ......................... 144 Light bulbs
Replacing ................................................. 421
Wattage .................................................535
Lights Automatic High Beam system ... 225
Headlight switch .................................222
Illuminated entry system................. 337
Interior light........................................... 336
Interior lights list.................................. 335
Personal lights ..................................... 336
Replacing light bulbs ............. 421, 422
Trunk light................................................. 151
Turn signal lever ................................... 216
Vanity lights .......................................... 344
Wattage .................................................535
Welcome light illumination control.................................................... 144
LKA (Lane-Keeping Assist) ............ 256 Operation.............................................. 260
Warning messages .......................... 444
Lock steering column......................... 205
Low profile tire ...................................... 398
Luggage security system ..................... 151
L

593Alphabetical index
GS350_300_OM_OM30G96U_(U)
Main display..............................................314
MaintenanceDo-it-yourself maintenance.......... 373
General maintenance .................... 369
Maintenance data .............................. 522
Maintenance requirements...........367
Malfunction indicator lamp .............. 437
Master warning light ........................... 439
Meter ....................................................92, 98 Head-up display.................................. 126
Indicators................................................... 87
Instrument panel light control .......................................... 95, 103
Meters................................................92, 98
Multi-information display ....... 106, 114
Warning lights ........................................86
Micro dust and pollen filter .............. 322
Mirrors Inside rear view mirror ..................... 175
Outside rear view mirror defoggers ........................................... 322
Outside rear view mirrors ............... 177
Vanity mirrors ......................................344
Moon roof................................................. 184 Door lock linked moon roof operation ..................... 185
Jam protection function ................... 185
Operation ............................................... 184
Warning message ............................. 444
MP3 disc
*
Multi-information display........... 106, 114 Boost meter/oil temperature gauge/oil pressure gauge.......... 109
Drive information....................... 108, 115
Dynamic radar cruise control with full-speed range ................... 266
“F” content ................................................. 117
G-force ......................................... 109, 120
Lap timer.................................................... 117
LKA (Lane-Keeping Assist)......... 256
Torque distribution .............................. 119
Navigation system
*
Noise from under vehicle ........................8
Odometer ........................................ 93, 100
Oil Engine oil ............................................... 526
Front differential oil ...........................530
Rear differential oil ..............................531
Opener Fuel filler door...................................... 234
Hood........................................................ 375
Trunk ..........................................................149
M
N
O
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.