2012 Lexus GS350 engine

2614-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)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 engine switch is turned to
IGNITION 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.
Changing the vehicle-to-vehicle distance
Preceding
vehicle mark
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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.)

2654-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)When constant speed control mode is selected, your vehicle will
maintain a set speed without controlling the vehicle-to-vehicle dis-
tance. Select this mode only when vehicle-to-vehicle distance con-
trol mode does not function correctly due to dirt etc.
Press the “ON-OFF” button to
activate the cruise control.
Press the button again to deactivate
the cruise control.
Switch to constant speed con-
trol mode.
(Push the lever forward and
hold for approximately one
second.)
Constant speed control mode indi-
cator will come on.
When in constant speed control
mode, to return to vehicle-to-vehi-
cle distance control mode, push the
lever forward again and hold for
approximately 1 second.
After the desired speed has been
set, it is not possible to return to
vehicle-to-vehicle distance control
mode.
If the engine switch is turned off
and then turned to IGNITION ON
mode again, the vehicle will auto-
matically return to vehicle-to-vehi-
cle distance control mode.
Selecting conventional constant speed control mode
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2764-5. Using the driving support
GS350/250_EE (OM30C36E)Press the “LKA” switch to acti-
vate the system.
“LKA” indicator will come on.
Press the switch again to turn the
LKA system off.
The LKA system will revert to off
each time the engine switch is
turned to IGNITION ON mode.
Turning the LKA system on

2934-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)
Alert volume setting
The alert volume can be adjusted.
Select “1” to “5” on the “LEXUS park assist settings”.
Select “OK”.
Display on/off setting
On or off can be selected for Lexus parking assist-sensor display.
Select “Display off”.
When the “Display off” indicator is turned on, the display of Lexus
parking assist-sensor will be off. Select “Display off” again to turn the
display of Lexus parking assist-sensor on.
Select “OK”.
Alert distance setting
Front or rear center sensors display and tone indication can be
set.
Select “Front” or “Rear”.
Long distance or short distance can be selected.
Select “OK”.
The Lexus parking assist-sensor can be operated when
Front center sensors:
• The engine switch is in IGNITION ON mode.
• The shift lever is in a position other than P.
• The vehicle speed is less than about 10 km/h (6 mph).
Front corner sensors:
• The engine switch is in IGNITION ON mode.
• The shift lever is in a position other than P or R.
• The vehicle speed is less than about 10 km/h (6 mph).
Rear corner and rear center sensors:
• The engine switch is in IGNITION ON mode.
• The shift lever is in R.
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2944-5. Using the driving support
GS350/250_EE (OM30C36E)
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
front corner and rear 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.

2984-5. Using the driving support
GS350/250_EE (OM30C36E)
Screen display
The parking assist monitor screen will be displayed if the shift
lever is shifted to R while the engine switch is in IGNITION ON
mode.
The parking assist monitor displays the last-used parking mode first.
Display mode switch screen button
Switches the display mode. (P. 299)
Lexus parking assist-sensor display*
If an obstacle is detected while the Lexus parking assist-sensor is on, a
display is shown in the top right corner of the screen.
*: Except for 12.3-inch display
Parking mode switch screen button
Switches the parking mode (between perpendicular parking and parallel
parking assist screens)
Narrow mode screen on-off button
Switch the narrow mode on and off. (P. 313)
Using the Lexus parking assist monitor
Perpendicular parkingParallel parking
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3134-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)
If the message “Steering wheel turned too far, please return.” is
displayed
The steering wheel has been turned too far, and the system can-
not function. Return the steering wheel to its original position.
If the message is displayed before the outline is positioned over
the desired parking space, it is likely that the vehicle is too far
away from the shoulder. Check that there is a gap of approxi-
mately 1 m (3 ft.) between your vehicle and the parked vehicle.
Narrow mode
If the position the vehicle is to be parked in is narrower than
usual, narrow mode can be used.
Normal mode
Narrow mode
The engine switch is turned off
when the parking assist monitor
is canceled with narrow mode,
the caution screen is displayed
first when the parallel parking
assist is selected next time.
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3324-5. Using the driving support
GS350/250_EE (OM30C36E)
Operation of the air conditioning system in Eco drive mode
Eco drive mode controls the heating/cooling operations and fan speed of the
air conditioning system to enhance fuel efficiency (P. 409). To improve air
conditioning performance, adjust the fan speed or turn off Eco drive mode.
Automatic operation of the seat heater during Eco drive mode
If the driving mode select switch is switched to Eco drive mode in cold tem-
peratures, the seat heater will be automatically operated to assist heating per-
formance.
Sport mode automatic deactivation
Sport mode is automatically deactivated if the engine switch is turned off
after driving in sport mode.