2019 Lexus GS F engine

GS F_OM_OM30G90U_(U)
2534-5. Using the driving support systems
4
Driving
Press the LKA switch to turn the LKA system on.
The LKA indicator illuminates and a message 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/GS300GS F
Indications on multi-information display
1
2

GS F_OM_OM30G90U_(U)
2654-5. Using the driving support systems
4
Driving
Pressing the switch changes the vehicle-to-vehicle distance as follows:Long
Medium
Short
The vehicle-to-vehicle distance is set au tomatically to long mode when the engine
switch is turned to IGNITION ON mode.
If a vehicle is running ahead of you, the pr eceding vehicle mark will also be displayed.
Select a distance from the table below. Note that the distances shown corre-
spond to a vehicle speed of 50 mph (8 0 km/h). Vehicle-to-vehicle distance
increases/decreases in accordance with vehicle speed. When the vehicle is
stopped by system control, the vehicle st ops at a certain vehicle-to-vehicle dis-
tance depending on the situation.
Changing the vehicle-to-vehicle distance (vehicle-to-vehicle distance
control mode)
GS350/GS300GS F
Preceding
vehicle markPreceding
vehicle mark
Vehicle-to-vehicle distance settings (vehicle-to-vehicle distance con-
trol mode)
1
2
3
Distance optionsVehicle-to-vehicle distance
LongApproximately 160 ft. (50 m)
MediumApproximately 130 ft. (40 m)
ShortApproximately 100 ft. (30 m)

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GS F_OM_OM30G90U_(U)4-5. Using the driving support systems
Driving mode select switch
GS350/GS300 (vehicles without Adaptive Variable Suspension system)
Normal mode
For normal driving.
Press the switch to change the driving mode
to normal mode when selected to Eco
drive mode or sport mode.
Eco drive mode
Use Eco drive mode to help achieve low fuel consumption during trips that
involve frequent accelerating.
When not in Eco drive mode and the driving mode select switch is turned to the left,
the “ECO” indicator comes on in the multi-information display.
Sport mode
Assists acceleration response by cont rolling the transmission, engine and
steering. Suitable for when precise ha ndling is desirable, for example when
driving on mountain roads.
When not in sport mode and the driving mode select switch is turned to the right, the
“SPORT” indicator comes on in the multi-information display.
The driving modes can be selected to suit driving condition.
1
2
3

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GS F_OM_OM30G90U_(U)4-5. Using the driving support systems
Sport mode
•SPORT S mode
Assists acceleration response by co ntrolling the transmission and engine.
When not in SPORT S mode and the driving mode select switch is turned to the
right, the “SPORT S” indicator comes on in the multi-information display.
•SPORT S+ mode
Helps to ensure steering performanc e and driving stability by simultane-
ously controlling the steeri ng and suspension in addition to the transmis-
sion and engine. Suitable for sporty driving.
When in SPORT S mode and the driving mode select switch is turned to the right,
the “SPORT S+” indicator comes on in the multi-information display.
3

278
GS F_OM_OM30G90U_(U)4-5. Using the driving support systems
Sport mode
•SPORT S mode
Assists acceleration response by co ntrolling the transmission and engine.
When not in SPORT S mode, if the driving mode select switch is turned to the
right, the “SPORT S” indicator comes on in the meter.
•SPORT S+ mode
Provides earlier downshift timing than SPORT S mode in order to maintain
a high engine speed and provides faster gear changes. This mode also
changes the steering feel, suspension control and VDIM control, making it
suitable for powerful sporty driving.
When in SPORT S mode, if the driving mode select switch is turned to the right,
the “SPORT S+” indicator comes on in the meter.
■Operation of the air conditioning system in Eco drive mode
Eco drive mode controls the heating/cooling operations and fan speed of the air condi-
tioning system to enhance fuel efficiency. To improve air conditioning performance, per-
form the following operations:
●Turn off eco air conditioning mode ( P. 312)
●Adjust the fan speed ( P. 311)
●Turn off Eco drive mode
■Automatic operation of the seat heater during Eco drive mode
Eco drive mode controls the heating operatio n and fan speed of the air conditioning sys-
tem to enhance fuel efficiency. If the driving mode select switch is switched to Eco drive
mode in cold temperatures, the seat heater will be automatically operated to assist heat-
ing performance.
■Automatic deactivation of sport mode and customized mode
If the engine switch is turned off after dr iving in sport mode or customized mode, the
drive mode will be changed to normal mode.
■Driving mode pop-up display (12.3-inch display only)
When the driving mode is changed, the sele cted driving mode will be temporarily dis-
played on the side display. ( P. 308)
3

286
GS F_OM_OM30G90U_(U)4-5. Using the driving support systems
■Conditions under which the Re
ar Cross Traffic Alert function may not function cor-
rectly
The Rear Cross Traffic Alert function may no t detect vehicles correctly in the following
conditions:
●During bad weather such as heavy rain, fog, snow etc.
●When ice or mud etc. is attached to the rear bumper
●When multiple vehicles approach continuously
●Shallow angle parking
●When a vehicle is approaching at high speed
●When parking on a steep incline, su ch as hills, a dip in the road etc.
●Directly after the BSM function is turned on
●When items such as a bicycle carrier ar e installed on the rear of the vehicle
●Directly after the engine is started with the BSM function is turned on
●When the sensors cannot detect vehicles
because of obstacles

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GS F_OM_OM30G90U_(U)4-5. Using the driving support systems
4
Driving
TVD (Torque Vectoring Differential) (GS F)
With the engine switch in IGNITION
ON mode, pressing the TVD switch
changes the TVD control mode.
The current TVD control mode will be
displayed on the meters.
STANDARD mode
This is the default mode and provides
an optimum balance of driving agility
and stability.
SLALOM mode
This mode emphasizes enhanced
steering response.
TRACK mode
This mode emphasiz
es stability for
high speed sporty driving.
The multi-information display shows the di stribution of driving force between the
right and left rear wheels. ( P. 113)
The TVD system distributes driving force (torque) between the right an\
d left
rear wheels automatically. This syst em contributes to enhanced steering
response while cornering and increased traction when exiting a corner, pro-
viding an agile driving experience.
Changing TVD control modes
1
2
3
TVD control status on the multi-information display

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GS F_OM_OM30G90U_(U)4-5. Using the driving support systems
■Automatic cancelation of the selected TVD control mode
SLALOM and TRACK mode are canceled when the engine switch is turned off. When
the engine switch is turned to IGNITION ON mode, the TVD system will be in STAN-
DARD mode.
■Automatic disabling of the TVD system
If a malfunction is de
tected in the TVD system, a warn ing message will be displayed on
the multi-information display ( P. 441) and the TVD system will be disabled automati-
cally. If the system is disabled, driving force will not be distributed by the TVD but through
normal differential operation.
■To protect the system
If the TVD fluid temperature becomes excessively high due to driving for a long time
under extremely high load conditions, a warn ing message will be displayed on the multi-
information display. ( P. 441)
WARNING
■Cautions regarding the use of the system
The driver is solely responsible for safe driv ing. Do not overly rely on the TVD system.
Always drive safely, taking care to observe your surroundings.