Park Lexus GS250 2012 Service Manual

2924-5. Using the driving support
GS350/250_EE (OM30C36E)You can change the warning beep volume and Remote Touch
screen operating conditions.
Press the “MENU” button on the Remote Touch. (P. 368)
Select “Setup” on the “Menu” screen.
Select “Vehicle” on the “Setup” screen.
Select “Lexus park assist” on the “Vehicle settings” screen.
Alert volume setting
Display on/off
Alert distance setting
Make sure to save after changing
settings.
Setting up Lexus parking assist-sensor
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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.

2964-5. Using the driving support
GS350/250_EE (OM30C36E)
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
Driving
GS350/250_EE (OM30C36E)
Lexus parking assist monitor
The parking assist monitor assists with the following 2 backing-up
operations:
• Perpendicular parking (parking in a garage, etc.)
• Parallel parking (parking at the side of the road, etc.)
The screen illustrations used in this text are intended as examples, and
may differ from the image that is actually displayed on the screen.
Parking assist monitor will acti-
vate when the shift lever is in R.
If you move the lever out of R, the
parking assist monitor will be
deactivated.
When the shift lever is shifted to
the R position and any mode but-
ton (such as “MENU”) is pressed,
the parking assist monitor is can-
celed, and the screen is switched to
the mode of the button that was
pressed.
The parking assist monitor assists the driver by displaying an
image of the view behind the vehicle while backing up, for exam-
ple while parking.

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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2994-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)
Using the system when perpendicular parking
Use any of the following
modes when perpendicular
parking (for example, when
parking in a garage).
Each time you select the dis-
play mode switch screen but-
ton, the display mode switches
in the following order:
Estimated course line display mode Parking assist guide line
display modeCourse line deletion modeEstimated course
line display mode

3004-5. Using the driving support
GS350/250_EE (OM30C36E)
Estimated course line display mode (P. 302)
Estimated course lines are dis-
played which move in accor-
dance with the operation of the
steering wheel.
Parking assist guide line display mode (P. 304)
The steering wheel return
points (parking assist guide
lines) are displayed.
Course line deletion mode
Distance guide lines only are
displayed.

3014-5. Using the driving support
4
Driving
GS350/250_EE (OM30C36E)
Using the system when parallel parking
Screen display and beep
sounds provide an estimation
of the point at which you
should turn the steering wheel
when parallel parking. If the
position the vehicle is to be
parked in is narrower than
usual, narrow mode can be
used.
Each time you select the nar-
row mode screen on-off but-
ton, the narrow mode and the
normal mode are switched.
Switching the parking mode screen
Each time you select the park-
ing mode switch screen but-
ton, the perpendicular parking
mode and parallel parking
mode are switched.

3024-5. Using the driving support
GS350/250_EE (OM30C36E)
Screen description
Vehicle width extension guide line
The line indicates a guide path when the vehicle is being backed
straight up.
The displayed width is wider than the actual vehicle width.
The line aligns with the estimated course lines when the steering wheel
is straight.
Estimated course lines
The lines show an estimated course when the steering wheel is turned.
Distance guide line
The line moves, together with the estimated course lines, in sync with
the steering wheel. The line shows points approximately 0.5 m (1.5 ft.)
(red) and approximately 1 m (3 ft.) (yellow) from the center of the edge
of the bumper.
Distance guide line
The line shows distance behind the vehicle, a point approximately 0.5
m (1.5 ft.) (blue) from the edge of the bumper.
Perpendicular parking (estimated course line display mode)
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