2019 LEXUS RX450H park

3504-5. Using the driving support systems
RX450h_RX450hL_U
■Re-enabling the Intelligent Clearance Sonar system
To re-enable the Intelligent Clearance Sonar system when it is disabled due to operation
of the Intelligent Clearance Sonar function, either enable the system again ( P. 345), or
turn the power switch off an d then back to ON mode.
Additionally, if the object becomes no longer in the traveling direction of the vehicle or if
the traveling direction of the vehicle change s (such as changing from moving forward to
backing up, or from backing up to moving fo rward), the system will be re-enabled auto-
matically.
■Objects that the Intelligent Clearance Sonar function may not detect
The sensors may not be able to detect certain objects, such as the following.
●Cotton cloth, snow, and other materials that are poor reflectors of ultrasonic waves.
(People may also not be detected depending on the type of clothing they are wearing.)
●Objects which are not perpendicular to the ground, are not perpendicular to the travel-
ing direction of the vehicle, are uneven or are waving.
●Low objects
●Thin objects such as wires, fences, ropes and signposts
●Objects that are extremely close to the bumper
■Intuitive parking assist buzzer
Regardless of whether the in tuitive parking assist system is enabled or not ( P. 332), if
the Intelligent Clearance Sonar system is enabled ( P. 345), the front or rear sensors
detect an object and brake control is performed, the intuitive parking assist buzzer will
sound to notify the driver of the approximate distance to the object.

3514-5. Using the driving support systems
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Driving
RX450h_RX450hL_U
■Situations in which the Intelligent Clearance Sonar function may operate even if there
is no possibility of a collision
In some situations such as the following, the Intelligent Clearance Sonar function may
operate even though there is no possibility of a collision.
●Vehicle surroundings
• When driving toward a banner, flag, low- hanging branch or boom barrier (such as
those used at railroad crossing s, toll gates and parking lots).
• When driving on a narrow path surrounded by a structure, such as in a tunnel or on
an iron bridge
• When parallel parking
• When there is a rut or hole in the surface of the road
• When driving on a metal cover (grating), such as those used for drainage ditches
• When driving on a steep slope
• If a sensor is hit by a large amount of wa ter, such as when driving on a flooded road
●Weather
• If a sensor is covered with ice, snow, dirt, etc. (when cleared, the system will return to
normal)
• If heavy rain or water strikes a sensor
• When driving in inclemen t weather such as fog, snow or a sandstorm
●Other ultrasonic waves sources
• When vehicle horns, vehicle detectors, motorcycle engines, air brakes of large vehi-
cles, the clearance sonar of other vehicles or other devices which produce ultra-
sonic waves are near the vehicle
• If a sticker or an electronic component, su ch as a backlit license plate (especially flu-
orescent type), fog lights, a fender pole or wireless antenna is installed near a sensor
●Changes in the vehicle posture
• If the vehicle is significantly tilted
• If the front of the vehicle is raised or lowered due to the carried load
• If the orientation of a sens or has been changed due to a collision or other impact
• When driving on a narrow road
• When driving on a gravel road or in an
area with tall grass

3594-5. Using the driving support systems
4
Driving
RX450h_RX450hL_U
■Re-enabling the Rear Cross Traffic Auto Brake function
To re-enable the Rear Cross Traffic Auto Brake function when it is disabled during opera-
tion of the Rear Cross Traffic Auto Brake function, either enable the system again (P.
345), or turn the power switch off and then back to ON mode.
Additionally, if there is no longer a vehicle ap proaching from the right or left at the rear of
the vehicle, or if the traveling direction of the vehicle changes (such as changing from
moving forward to backing up or from backin g up to moving forward), the system will be
re-enabled automatically.
■Conditions under which the Rear Cross Traffic Auto Brake function will not detect a
vehicle
The Rear Cross Traffic Auto Brake function is not designed to detect the following types
of vehicles and/or objects:
●Vehicles approaching from directly behind
●Vehicles backing up in a parkin g space next to your vehicle
●Guardrails, walls, signs, parked vehi cles and similar stationary objects*
●Small motorcycles, bicycles, pedestrians, etc.*
●Vehicles moving away from your vehicle
●Vehicles approaching from the parking spaces next to your vehicle*
*: Depending on the conditions, detection of a vehicle and/or object may occur.
■RCTA function buzzer
Regardless of whether the RCTA function is enabled or not ( P. 321), if the Rear Cross
Traffic Auto Brake function is enabled and brake control is performed, a buzzer will
sound to notify the driver.
●Vehicles that the sensors cannot detect due
to obstructions
●Vehicles which suddenly accelerate or decel-
erate near your vehicle

3604-5. Using the driving support systems
RX450h_RX450hL_U
■Situations in which the system may operate ev en though there is no possibility of a colli-
sion
In some situations such as the following, th e Rear Cross Traffic Auto Brake function may
operate even though there is no possibility of a collision.
●When the parking space faces a street and
vehicles are being driven on the street
●When a detected vehicle turns while
approaching the vehicle
●When a vehicle passes by the side of your
vehicle
●When the distance between your vehicle and
metal objects, such as a guardrail, wall, sign,
or parked vehicle, which may reflect electrical
waves toward the rear of the vehicle, is short
• When there are spinning objects near your vehicle such as the fan of an air condi-
tioning unit
• When water is splashed or sprayed toward the rear bumper, such as from a sprinkler

3614-5. Using the driving support systems
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Driving
RX450h_RX450hL_U
■Situations in which the Rear Cross Traffic Auto Brake function may not operate prop-
erly
In some situations such as the following , this function may not operate properly.
●Objects and vehicles which the radar sensors are not designed to detect
• Stationary objects
• Vehicles which are moving away from your vehicle
• Pedestrians, motorcycles, bicycles, etc.*
• Objects which are extremely close to a radar sensor
• Vehicles which are approaching from the right or left at the rear of the vehicle at a
traveling speed of less than approximately 5 mph (8 km/h)
• Vehicles which are approaching from the right or left at the rear of the vehicle at a
traveling speed of more than approximately 15 mph (24 km/h)
*: Depending on conditions, detection of a vehicle and/or object may occur.
●Situations in which the radar sensors may not be able to detect an object
• When a sensor or the area around a sensor is extremely hot or cold
• If the rear bumper is covere d with ice, snow, dirt, etc.
• If heavy rain or water strikes the vehicle
• When the detection area of a radar sensor is obstructed by an adjacent vehicle
• If the vehicle is significantly tilted
• If towing eyelets are installed
• If the suspension has been modified or tires of a size othe r than specified are
installed
• If the front of the vehicle is raised or lowered due to the carried load
• If a sticker or an electronic component, su ch as a backlit license plate (especially flu-
orescent type), fog lights, a fender pole or wireless antenna is installed near a radar
sensor
• If the orientation of a rada r sensor has been changed due to a collision or other
impact or removal and installation
• When multiple vehicles are approaching wi th only a small gap between each vehicle
• When a vehicle is approaching at high speed
●Situations in which the radar sensor may not detect a vehicle
• When a vehicle approaches from the right or left at the rear of the vehicle while you
are turning while backing up
• When turning while backing up
• When backing out of a shallow angle park- ing spot

3634-5. Using the driving support systems
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Driving
RX450h_RX450hL_U
The rear view image is displayed when
the shift lever is in R and the power
switch is in ON mode.
The parking assist monitor system will
be deactivated when the shift lever is in
any position other than R.
Lexus parking assist monitor

: If equipped
The parking assist monitor assists the driv er by displaying an image of the view
behind the vehicle while backing up, for example while parking.
The screen illustrations used in this text are intended as examples, and may
differ from the image that is ac tually displayed on the screen.

3644-5. Using the driving support systems
RX450h_RX450hL_U
■Screen display
The parking assist monitor screen will be displayed if the shift position is
shifted to R while the power switch is in ON mode.
Intuitive parking assist
Rear Cross Traffic Alert (if
equipped)
A simplified image is displayed on
the upper part of the screen when an
obstacle is detected.
■Using the system
Use any of the following modes.
●Estimated course line display mode ( P. 366)
Estimated course lines are dis-
played which move in accor-
dance with the operation of the
steering wheel.
Using the Lexus parking assist monitor
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3654-5. Using the driving support systems
4
Driving
RX450h_RX450hL_U
●Parking assist guide line display mode (P. 368)
The steering wheel return points
(parking assist guide lines) are
displayed.
●Distance guide line display mode
Distance guide lines only are dis-
played.
When the shift lever is in any position other than R, the display mode can be
changed in the following procedure. Press the “MENU” button on the Le xus Display Audio controller/Remote
Touch, and then select on the screen.
Select “Vehicle”, and then select “Backup Camera Guide Line Settings” on
the screen.
Select the desired display mode.
Estimated course line display
mode ( P. 366)
Parking assist guide line display
mode ( P. 368)
Distance guide line display mode
Distance guide lines only are dis-
played.
Switching the display mode
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