2020 Lexus GS350 lane assist

GS350_GS F_OM_OM30J07U_(U)
1272. Instrument cluster
2
Instrument cluster
●Vehicle speed
●Tachometer
●Shift position and shift range
Displays the selected shift position or selected shift range ( P. 208)
●Eco Driving Indicator (GS350) ( P. 130)
●Head-up rev indicator (GS F) ( P. 130)
●Audio display*
Displays audio information for approximat ely 3 seconds when the audio system is
operated
●Route guidance display (vehicles with navigation system) ( P. 130)
When approaching an intersec tion while the navigation system is giving route guid-
ance, an arrow will automatically be displa yed to indicate the direction of travel.
●Lexus Enform (if equipped)
Displays “LEXUS Enform” for approximat ely 3 seconds when LEXUS App Suite is
operated
●Lane departure warning display (LKA [Lane-Keeping Assist]) (if equipped)
( P. 443)
●Approach warning display (dynamic radar cruise control with full-speed
range) (if equipped) ( P. 443)
●Pre-collision warning message (PCS [Pre-Collision System])
(if equipped) ( P. 443)
●Speed limit display (vehicles with navigation system) ( P. 131)
*: The default setting is off
■“HUD” button
Pressing the switch turns the head-
up display on/off and changes the
vehicle speed display units as fol-
lows:
U.S.A.
OFF  ON (MPH) 
ON (km/h)  OFF
Canada
OFF  ON (km/h)  ON (MPH)  OFF
Head-up display contents
Switching the head-up display

187
GS350_GS F_OM_OM30J07U_(U)
4Driving
4-1. Before drivingDriving the vehicle ......................188
Cargo and luggage .................... 197
Vehicle load limits ..................... 200
Trailer towing ................................ 201
Dinghy towing .............................202
4-2. Driving procedures Engine (ignition) switch .......... 203
Automatic transmission.......... 208
Turn signal lever........................... 216
Parking brake ............................... 217
Brake Hold..................................... 219
ASC (Active Sound Control) (GS F) ........................................... 221
4-3. Operating the lights and wipers
Headlight switch ......................... 222
Automatic High Beam .............225
Windshield wipers and washer.................................229 4-4. Refueling
Opening the fuel tank cap ..... 234
4-5. Using the driving support systems
Lexus Safety System + ............. 239
PCS (Pre-Collision System)........................................ 245
LKA (Lane-Keeping Assist) .......................................... 256
Dynamic radar cruise control with full-speed range ............. 266
Cruise control ............................. 278
Driving mode select switch ............................................ 281
BSM (Blind Spot Moni tor).............. 286
• The Blind Spot Monitor function ....................................290
• The Rear Cross Traffic
Alert function ......................... 292
TVD (Torque Vectoring Differential) (GS F) ................ 295
Driving assist systems .............. 297
4-6. Driving tips Winter driving tips .....................305

239
GS350_GS F_OM_OM30J07U_(U)4-5. Using the driving support systems
4
Driving
Lexus Safety System +
◆PCS (Pre-Collision System)

P. 245
◆LKA (Lane-Keeping Assist)
P. 256
◆Automatic High Beam
P. 225
◆Dynamic radar cruise control with full-speed range
P. 266
: If equipped
The Lexus Safety System + consists of the following drive assist systems and
contributes to a safe and comfo rtable driving experience:
WARNING
■Lexus Safety System +
The Lexus Safety System + is designed to operate under the assumption that the driver
will drive safely, and is designed to help reduce the impact to the occupants and the
vehicle in the case of a collision or assist the driver in normal driving conditions.
As there is a limit to the degree of recognition accuracy and control performance that
this system can provide, do not overly rely on this system. The driver is always responsi-
ble for paying attention to the vehicle’s surroundings and driving safely.

256
GS350_GS F_OM_OM30J07U_(U)4-5. Using the driving support systems
LKA (Lane-Keeping Assist)
When driving on highways and freeways
with white or yellow lines, this function
alerts the driver when the vehicle might depart from its lane and provides assis-
tance by operating the steering wheel to keep the vehicle in its lane. Further-
more, the system also provides steering assistance when dynamic radar cruise
control with full-speed range is operat ing to keep the vehicle in its lane.
The LKA system recognizes visible
white or yellow lines with the camera
sensor on the upper portion of the front
windshield.
◆Lane departure alert function
When the system determines that
the vehicle might depart from its
lane, a warning is displayed on the
multi-information display, and either
the warning buzzer sounds or the
steering wheel vibrates to alert the
driver.
When the warning buzzer sounds or
the steering wheel vibrates, check
the surrounding road situation and
carefully operate the steering wheel
to move the vehicle back to the cen-
ter of the lane.
: If equipped
Summary of functions
Functions included in LKA system

GS350_GS F_OM_OM30J07U_(U)
2574-5. Using the driving support systems
4
Driving
◆Steering assist function
When the system determines that
the vehicle might depart from its
lane, the system provides assistance
as necessary by operating the steer-
ing wheel in small amounts for a
short period of time to keep the
vehicle in its lane.
GS350: If the system detects that
the steering wheel has not been
operated for a fixed amount of time
or the steering wheel is not being
firmly gripped, a warning is displayed
on the multi-information display and
the warning buzzer sounds.
GS F: If the system detects that the
steering wheel has not been oper-
ated for a fixed amount of time or the
steering wheel is not being firmly
gripped, a warning is displayed on
the multi-information display and the
function is temporarily canceled.
◆Vehicle sway warning function
When the vehicle is swaying or
appears as if it may depart from its
lane multiple times, the warning
buzzer sounds and a message is dis-
played on the multi-information dis-
play to alert the driver.

258
GS350_GS F_OM_OM30J07U_(U)4-5. Using the driving support systems
◆Lane centering function
This function is linked with radar
cruise control and provides the
required assistance by operating the
steering wheel to keep the vehicle in
its current lane.
When radar cruise control is not
operating, the lane centering func-
tion does not operate.
GS350: If the system detects that
the steering wheel has not been
operated for a fixed amount of time
or the steering wheel is not being
firmly gripped, a wa
rning is displayed
on the multi-information display and
the warning buzzer sounds.
GS F: If the system detects that the
steering wheel has not been oper-
ated for a fixed amount of time or the
steering wheel is not being firmly
gripped, a warning is displayed on
the multi-information display and the
function is temporarily canceled.

260
GS350_GS F_OM_OM30J07U_(U)4-5. Using the driving support systems
Press the LKA switch to turn the LKA system on.
The LKA indicator illuminates and a messag
e is displayed on the multi-information
display.
Press the LKA switch again to turn the LKA system off.
When the LKA system is turned on or off, operation of the LKA system continues in
the same condition the next time the engine is started.
LKA indicator
The illumination condition of the
indicator informs the driver of the
system operation status.
Illuminated in white:
LKA system is operating.
Illuminated in green:
Steering wheel assistance of the steer-
ing assist function or lane centering
function is operating.
Flashing in orange:
Lane departure alert function is operat-
ing.
Operation display of steering wheel
operation support
Indicates that steering wheel assistance of the steering assist function or lane
centering function is operating.
Turning LKA system on
GS350GS F
Indications on multi-information display
1
2

GS350_GS F_OM_OM30J07U_(U)
2614-5. Using the driving support systems
4
Driving
Lane departure alert function display
Displayed when the multi-information display is switched to the driving assist
system information screen.
■Operation conditions of each function
●Lane departure alert function
This function operates when all of the following conditions are met.
• LKA is turned on.
• Vehicle speed is approximatel y 32 mph (50 km/h) or more.
• System recognizes white (yellow) lines.
• Width of traffic lane is approx imately 9.8 ft. (3 m) or more.
• Turn signal lever is not operated.
• Vehicle is driven on a straight road or around a gentle curve with a radius of more
than approximately 492 ft. (150 m).
• No system malfunctions are detected. ( P. 264)
●Steering assist function
This function operates when all of the follo wing conditions are met in addition to the
operation conditions for the lane departure alert function.
• Setting for “Steering Assist” in of the multi-information display is set to “On”.
(  P. 106, 114)
• Vehicle is not accelera ted or decelerated by a certain amount or more.
• Steering wheel is not operated with a steering force level suitable for changing
lanes.
• ABS, VSC, TRAC and PCS (Pre-Collision System) are not operating.
• TRAC or VSC is not turned off.
• GS F: Hands off steering wheel alert is not displayed. ( P. 263)
3
Inside of displayed white lines is
whiteInside of displayed white lines is
black
Indicates that the system is recognizing
white (yellow) lines. When the vehicle
departs from its lane, the white line dis-
played on the side the vehicle departs
from flashes orange. Indicates that the system is not able to
recognize white (ye
llow) lines or is
temporarily canceled.