2013 Lexus GS300h ESP

3224-5. Using the driving support system
GS450h_300h_OM_OM30D53E_(EE)
Pressing the button changes the
vehicle-to-vehicle distance as
follows:
Long
Medium
Short
The vehicle-to-vehicle distance is
set automatically to long mode
when the power switch is turned to
ON mode.
If a vehicle is running ahead of
you, the preceding vehicle mark
will also be displayed.
Select a distance from the table below. Note that the distances
shown correspond to a vehicle speed of 80 km/h (50 mph). Vehicle-
to-vehicle distance increases/decreases in accordance with vehicle
speed. When the vehicle is stopped by system control, the vehicle-
to-vehicle distance will be about 3 m (10 ft.) to 5 m (16 ft.) regard-
less of the vehicle-to-vehicle distance setting.
Changing the vehicle-to-vehicle distance
Preceding
vehicle
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Vehicle-to-vehicle distance settings
Distance optionsVehicle-to-vehicle distance
LongApproximately 50 m (160 ft.)
MediumApproximately 40 m (130 ft.)
ShortApproximately 30 m (100 ft.)

3254-5. Using the driving support system
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
This mode employs a radar sensor to detect the presence of vehicles
up to approximately 120 m (400 ft.) ahead, determines the current
vehicle-to-vehicle following distance, and operates to maintain a
suitable following distance from the vehicle ahead.
Note that vehicle-to-vehicle distance will close in when traveling on long
downhill slopes.
Example of constant speed cruising
When there are no vehicles ahead
The vehicle travels at the speed set by the driver. The desired vehicle-to-
vehicle distance can also be set by operating the vehicle-to-vehicle dis-
tance control.
Example of deceleration cruising and follow-up cruising
When the vehicle ahead is driving slower than the set speed
When a vehicle is detected running ahead of you, the system automatically
decelerates your vehicle. When a greater reduction in vehicle speed is nec-
essary, the system applies the brakes. The system will respond to changes
in the speed of the vehicle ahead in order to maintain the vehicle-to-vehi-
cle distance set by the driver. A warning tone warns you when the system
cannot decelerate sufficiently to prevent your vehicle from closing in on
the vehicle ahead. When the vehicle ahead of you stops, your vehicle will
also stop. After the vehicle ahead starts off, pushing the cruise control
Driving in vehicle-to-vehicle distance control mode
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4 4-5. Using the driving support system
Driving
GS450h_300h_OM_OM30D53E_(EE)
When driving on roads that are branching or merging
When driving on a road surface that is wet due to rain, previous rainfall,
standing water, etc.
When the vehicle experiences strong up-and-down motion such as when
driving on an extremely rough road or on a seam in the pavement
When headlight brightness at nighttime is reduced due to dirt on the lenses,
or when the headlights are misaligned
When driving with a strong crosswind
When driving on winding roads or roads that are uneven
When driving on rough or unpaved roads
When changing the tires
Depending on the tires used, sufficient performance may not be maintain-
able.
Warning messages for LKA
Warning messages are used to indicate a system malfunction or to inform the
driver of the need for caution while driving. (P. 842, 854)
CAUTION
Before using the LKA system
Do not rely solely on the LKA system. The LKA system does not drive the
vehicle automatically, nor does it reduce the amount of care you need to
take. As such, the driver must always assume full responsibility for under-
standing his/her surroundings, for operating the steering wheel to correct
the driving line, and for driving safely.
Inappropriate or negligent driving could lead to an accident.
To avoid operating the LKA by mistake
Switch the LKA off using the “LKA” switch when not in use.

3554-5. Using the driving support system
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
Buzzer operation and distance to an obstacle
A buzzer sounds when the sensors are operating.
The buzzer beeps faster as the vehicle approaches an obstacle.
When the vehicle comes within the following distance of the
obstacle, the buzzer sounds continuously:
• Front center sensors: Approximately 30 cm (1.0 ft.)
• Corner sensors: Approximately 30 cm (1.0 ft.)
• Rear center sensors: Approximately 35 cm (1.1 ft.)
When 2 or more obstacles are detected simultaneously, the
buzzer system responds to the nearest obstacle. If one or both
come within the above distances, the beep will repeat a long
tone, followed by fast beeps.
Approximately 100 cm (3.3
ft.)
Approximately 150 cm (4.9
ft.)
Approximately 60 cm (2.0 ft.)
The diagram shows the detection
range of the sensors. Note that the
sensors cannot detect obstacles
that are extremely close to the
vehicle.
The range of the sensors may
change depending on the shape of
the object etc.
Detection range of the sensors
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3584-5. Using the driving support system
GS450h_300h_OM_OM30D53E_(EE)
Lexus parking assist-sensor display
When an obstacle is detected while the rear view monitor system, is in use,
the warning indicator will appear in the top right of the screen even if the dis-
play setting has been set to off.
Sensor detection information
The sensor’s detection areas are limited to the areas around the vehicle’s
bumpers.
Certain vehicle conditions and the surrounding environment may affect the
ability of the sensor to correctly detect obstacles. Particular instances where
this may occur are listed below.
• There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve
this problem.)
• The sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is frozen the screen may show an
abnormal display, or obstacles may not be detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side.
• On an extremely bumpy road, on an incline, on gravel, or on grass.
• The vicinity of the vehicle is noisy due to vehicle horns, motorcycle
engines, air brakes of large vehicles, or other loud noises producing
ultrasonic waves.
• There is another vehicle equipped with parking assist sensors in the
vicinity.
• The sensor is coated with a sheet of spray or heavy rain.
• The vehicle is equipped with a fender pole or wireless antenna.
• Towing eyelets are installed.
• The bumper or sensor receives a strong impact.
• The vehicle is approaching a tall or curved curb.
• In harsh sunlight or intense cold weather.
• The area directly under the bumpers is not detected.
• If obstacles draw too close to the sensor.
• A non-genuine Lexus suspension (lowered suspension etc.) is installed.
• People may not be detected if they are wearing certain types of clothing.
In addition to the examples above, there are instances in which, because of
their shape, signs and other objects may be judged by the sensor to be closer
than they are.

3604-5. Using the driving support system
GS450h_300h_OM_OM30D53E_(EE)
CAUTION
When using the Lexus parking assist-sensor
Observe the following precautions.
Failing to do so may result in the vehicle being unable to be driven safely
and possibly cause an accident.
Do not use the sensor at speeds in excess of 10 km/h (6 mph).
The sensors’ detection areas and reaction times are limited. When moving
forward or reversing, check the areas surrounding the vehicle (especially
the sides of the vehicle) for safety, and drive slowly, using the brake to
control the vehicle’s speed.
Do not install accessories within the sensors’ detection areas.
NOTICE
When using Lexus parking assist-sensor
In the following situations, the system may not function correctly due to a
sensor malfunction etc. Have the vehicle checked by any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional.
The Lexus parking assist-sensor operation display flashes, and a beep
sounds when no obstacles are detected.
If the area around a sensor collides with something, or is subjected to
strong impact.
If the bumper collides with something.
If the display shows continuously without a beep.
If a display error occurs, first check the sensor.
If the error occurs even if there is no ice, snow or mud on the sensor, it is
likely that the sensor is malfunctioning.
Notes when washing the vehicle
Do not apply intensive bursts of water or steam to the sensor area.
Doing so may result in the sensor malfunctioning.

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4 4-5. Using the driving support system
Driving
GS450h_300h_OM_OM30D53E_(EE)
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 MODE” indicator comes on in the multi-information
display.
Also, on vehicles equipped with a
12.3-inch display, the driving
mode is also automatically dis-
played on the “Side Display”.
(P. 444)
Sport mode
Assists acceleration response by controlling the hybrid system
and steering. Suitable for when precise handling 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 dis-
play, and the Hybrid System Indicator changes to the tachometer. (P.
109)
Also, on vehicles equipped with a
12.3-inch display, the driving
mode is also automatically dis-
played on the “Side Display”.
(P. 444)
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3954-5. Using the driving support system
4
Driving
GS450h_300h_OM_OM30D53E_(EE)
Sport mode
• SPORT S mode
Assists acceleration response by controlling the hybrid system.
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, and the Hybrid System Indicator changes to the
tachometer. (P. 109)
Also, on vehicles equipped with
a 12.3-inch display, the driving
mode is also automatically dis-
played on the “Side Display”.
(P. 444)
• SPORT S+ mode
Helps to ensure steering performance and driving stability by
simultaneously controlling the steering and suspension in
addition to the hybrid system. 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, and the Hybrid System Indicator changes to the tachometer.
(P. 109)
Also, on vehicles equipped with
a 12.3-inch display, the driving
mode is also automatically dis-
played on the “Side Display”.
(P. 444)
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