sensor LEXUS RX450h 2018 Workshop Manual

336 4-5. Using the driving support systems
RX450h_RX450hL _U_OM48F85U* 1
: The images may differ from th ose shown in the illustrations. ( → P. 333)
* 2
: Multi-information display
* 3
: Audio system screen
* 4
: Lexus Display Audio or navigation system (8-inch display) screen ■
Buzzer operation and distance to an object
A buzzer sounds when the sensors are operating. ●
The buzzer sounds faster as th e vehicle approaches an object.
When the vehicle comes within the following distance of the object, the
buzzer sounds continuously: Approximately 1.2 ft. (35 cm). ●
When 2 or more objects are detected simultaneously, the buzzer system
responds to the nearest object. If on e or both come within the above dis-
tances, the beep will repeat a lo ng tone, followed by fast beeps.(blinking
* 2
or
continuous
* 3
) (continuous) (continuous) Less than
1.2 ft. (35 cm) Less than
1.2 ft. (35 cm)Display
* 1
Insert display Approximate distance to object
Lexus parking
assist moni-
tor
* 4
Panoramic
view monitor Front and rear
center sensor Front and rear
corner sensor

3374-5. Using the driving support systems
4
Driving
RX450h_RX450hL _U_OM48F85UApproximately 3.3 ft. (100 cm)
Approximately 4.9 ft. (150 cm)
Approximately 2.0 ft. (60 cm)
RX450h:
Approximately 2.0 ft. (60 cm)
RX450hL:
Approximately 2.1 ft. (66 cm) The diagram shows th e detection range
of the sensors. Note that the sensors
cannot detect objects 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 1
2
3
4

338 4-5. Using the driving support systems
RX450h_RX450hL _U_OM48F85UYou can change the buzzer sounds volu me and the screen operating conditions
when the power switch is in ON mode.
Press the “MENU” button on the Le xus Display Audio controller/Remote
Touch, and then select on the screen.
Select “Vehicle”, and then select “LEXUS Park Assist” on the screen.
Select the desired item.
The buzzer sounds volume can be adjusted.
On or off can be selected for intuitive parking assist display.
Both the front or rear center sensors display and tone indication can be set.■
The intuitive parking assist can be operated when ●
Front corner sensors:
• The power switch is in ON mode.
• The shift lever is in other than P.
• The vehicle speed is less than about 6 mph (10 km/h).
(At any speed when the shift lever is in R) ●
Front center sensors:
• The power switch is in ON mode.
• The shift lever is in other than P or R.
• The vehicle speed is less than about 6 mph (10 km/h). ●
Rear corner and rear center sensors:
• The power switch is in ON mode.
• The shift lever is in R. ■
Intuitive parking assist display ●
Vehicles with a Lexus Display Audio system/navigation system (8-inch display): When
an object is detected while the Lexus parking assist monito r or panoramic view monitor
is in use, the warning indicator will appear in the up per part of the scre en even if the dis-
play setting has been set to off.Setting up intuitive parking assist 1
2
3 
Lexus Display Audio screen 
Navigation system screen
1
2
3

3394-5. Using the driving support systems
4
Driving
RX450h_RX450hL _U_OM48F85U●
Vehicles with a navigation system (12.3-inch display): If the intuit ive parking assist dis-
play is set to on, detected objects will also be displayed on the panoramic view monitor.
For details, refer to “NAVIGATION SYSTEM OWNER’S MANUAL”. ■
Sensor detectio n information●
The sensor’s detection areas are limited to the areas around the vehicle’s bumper. ●
Certain vehicle conditions and the surrounding environment may affect the ability of a
sensor to correctly detect an object. Particular instances where this may occur are
listed below.
• There is dirt, snow or ice on the sensor . (Wiping the sensors will resolve this prob-
lem.)
• The sensor is frozen. (Thawing th e 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.
• When a sensor or the area around a sensor is extremely hot or cold.
• 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 bumper or sensor re ceives a strong impact.
• If the vehicle is significantly tilted.
• 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 objects draw too close to the sensor.
• People may not be detected if they are wearing certain types of clothing.
In addition to the examples above, there ar e instances in which, because of their shape,
signs and other objects may be judged by a sensor to be closer than they are. ●
The shape of the object may prevent a sensor from detecting it. Pay particular attention
to the following objects:
• Wires, fences, ropes, etc.
• Cotton, snow and other materi als that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of your vehi-
cle ●
The following situations may occur during use.
• Depending on the shape of the object and other factors, the detection distance may
shorten, or detectio n may be impossible.
• Objects may not be detected if they are too close to the sensor.
• There will be a short dela y between object detection and display. Even at slow
speeds, there is a possibility that the obje ct will come within the sensor’s detection
areas before the display is shown and the buzzer sounds.
• Thin posts or objects lower than the sens or may not be detected when approached,
even if they have been detected once.
• It might be difficult to hear beeps due to th e volume of audio system or air flow noise
of the air conditioning system.

340 4-5. Using the driving support systems
RX450h_RX450hL _U_OM48F85U■
If “Clean Parking Assist Sensor” is di splayed on the multi- information display
A sensor may be dirty or covered with snow or ic e. In such cases, if it is removed from the
sensor, the system should return to normal.
Also, due to the sensor being frozen at low temperatures, a malfunction display may
appear or an object may not be detected. If the sensor thaws out, the system should
return to normal. ■
If “Parking Assist Malfunction” is di splayed on the multi- information display
Depending on the malfunction of the sensor, the device may not be working normally.
Have the vehicle inspected by your Lexus dealer. ■
Certification 
For vehicles sold in Canada
This ISM device complies with Canadian ICES-001.
Cet appareil ISM est conforme a la norme NMB-001 du Canada. ■
Customization
Some functions can be customized. ( → P. 338, 736)
WARNING ■
When using the intuitive parking assist
Observe the following precautions.
Failing to do so may result in the vehicle be ing unable to be driv en safely and possibly
cause an accident. ●
Do not use the sensor at speeds in excess of 6 mph (10 km/h). ●
The sensors’ detection areas and reaction ti mes are limited. When moving forward or
reversing, check the areas surrounding the vehicle (especially th e sides of the vehi-
cle) for safety, and drive slowly, using the brake to control the vehicle’s speed. ●
Do not install accessories within the sensors’ detection areas.●
The vehicle is equipped with a fender pole or wireless antenna. ●
The front or rear bumper or a se nsor receives a strong impact.●
A non-genuine Lexus suspension (lower ed suspension, etc.) is installed.●
Towing eyelets are installed. ●
A backlit licence plate is installed. ■
When using intuitive parking assist
In the following situations, the system may not function correctly due to a sensor mal-
function, etc. Have the vehicle checked by your Lexus dealer. ●
The intuitive parking assist operation disp lay flashes, and a buzzer sounds when no
obstacles are detected. ●
If the area around a sensor co llides with something, or is subjected to strong impact.●
If the bumper collides with something. ●
If the display shows continuously withou t beeping, except when the buzzer mute
switch has been turned on. ●
If a display error occurs , first check the sensor.
If the error occurs even if there is no ice, sn ow or mud on the sensor, it is likely that the
sensor is malfunctioning.

3414-5. Using the driving support systems
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Driving
RX450h_RX450hL _U_OM48F85UWARNING ■
Notes when washing the vehicle
Do not apply intensive bursts of water or steam to the sensor area.
Doing so may result in th e sensor malfunctioning.●
When using a high pressure washer to wa sh the vehicle, do not spray the sensors
directly, as doing so may cause a sensor to malfunction. ●
When using steam to clean the vehicle, do not direct steam too close to the sensors
as doing so may cause a sensor to malfunction.

342 4-5. Using the driving support systems
RX450h_RX450hL _U_OM48F85UThe system will operate in situations such as the following if a stationary object is
detected in the traveling direction of the vehicle.
◆ When traveling at a low speed and the brake pedal is not depressed, or is
depressed lateIntelligent Clearance Sonar (ICS) ∗
∗ : If equippedIf a collision with a wall or other stationary object may occur due to the vehicle
suddenly moving forward due to an ac cidental accelerator pedal operation,
the vehicle moving the unintended dire ction due to the wrong shift position
being selected, or while parking or tr aveling at low speeds, the sensors sta-
tionary detect objects, such as a wall, in the traveling direction of the vehicle,
and the system operates to lessen an impact with a stationary object and
reduce the resulting collision damage.
Examples of system operation

344 4-5. Using the driving support systems
RX450h_RX450hL _U_OM48F85UIf a rear radar sensor detects a vehicle ap proaching from the right or left at the
rear of the vehicle and the system determ ines that the possibility of a collision is
high, this function will perform brake control to reduce the likelihood of an
impact with the approaching vehicle. ■
Examples of system operation
This function will operate in situations such as the following if a vehicle is
detected in the traveling direction of the vehicle.
◆ When reversing, a vehicle is approaching and the brake pedal is not
depressed, or is depressed lateRear Cross Traffic Auto Brake function

3454-5. Using the driving support systems
4
Driving
RX450h_RX450hL _U_OM48F85USelect on the multi-information
display.
Press or of the meter con-
trol switch and select “ICS”.
Press of the meter control
switch.
Select the “Yes” and push .
When the Intelligent Clearance Sonar is disabled, the ICS OFF indicator illu-
minates.
To re-enable the system when it was disabled, select on the multi-informa-
tion display, select “ICS” and then “On”. If disabled using this method, the sys-
tem will not be re-enabled by turning the power switch off and then to ON
mode.Types of sensors 
Except F SPORT models 
F SPORT models
Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
Turning the Intelligent Cle arance Sonar system on/off1
2
3
4
1
2
3
4

350 4-5. Using the driving support systems
RX450h_RX450hL _U_OM48F85U■
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 directio n 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 Cleara nce 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.