2018 LEXUS RX450h Owners Manual

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

346 4-5. Using the driving support systems
RX450h_RX450hL _U_OM48F85UIf the hybrid system output restriction control or brake cont rol operates, a buzzer
will sound and a message will be displa yed on the multi-information display to
alert the driver. Depending on the situation, hybrid system output restriction contro l will operate to
either limit acceleration or restrict output as much as possible.
Displays and buzzers for hybrid sys tem output restriction control and
brake control Control Situation Multi-information
display ICS OFF
Indicator Buzzer
Hybrid system out-
put restriction con-
trol is operating
(acceleration
restriction) Acceleration
greater than a cer-
tain amount is not
possible. “Object Detected
Acceleration
Reduced”
Not illu-
minated
Short
beepHybrid system out-
put restriction con-
trol is operating
(output restricted as
much as possible) Stronger-than-nor-
mal brake operation
is necessary.
“BRAKE!”
Brake control is
operating Emergency braking
is necessary.
Vehicle stopped by
system operation The vehicle has been
stopped by brake
control operation. “Switch to Brake” Illumi-
nated

3474-5. Using the driving support systems
4
Driving
RX450h_RX450hL _U_OM48F85UIf the Intelligent Clearance Sonar function detects that a collision with a wall or
other stationary object is possible, the hy brid system output will be restricted to
restrain any increase in the vehicle speed . (Hybrid system outp ut restriction con-
trol: See A below.)
Additionally, if the accelerator pedal continues to be depressed, the brakes will
be applied automatically to reduce the vehicle speed. (Brake control: See B
below.)Intelligent Clearance Sonar function

348 4-5. Using the driving support systems
RX450h_RX450hL _U_OM48F85UOn
Off
Time
DownOn
Off
Time
On
Off
Time Down
Up
Accelerator pedal
Brake pedal
Hybrid system output
Braking force Start of control
High possibility of a collision
Extremely high possibility of a colli-
sion1
2
3
4 5
6
7

3494-5. Using the driving support systems
4
Driving
RX450h_RX450hL _U_OM48F85U■
The Intelligent Clearance Sonar function will operate when
The function will operate when the ICS OFF indicator is not illuminated or flashing ( → P.
345, 353) and all of the fo llowing conditions are met:●
Hybrid system output restriction control
• The Intelligent Clearance Sonar system is enabled.
• The vehicle speed is 10 mph (15 km/h) or less.
• There is a stationary object in the traveling direction of the vehicle and 6 to 13 ft. (2
to 4 m) away.
• The system determines that a stronger-t han-normal brake operation is necessary to
avoid a collision. ●
Brake control
• Hybrid system output restri ction control is operating.
• The system determines that an emergenc y brake operation is necessary to avoid a
collision.■
The Intelligent Clearance Sonar fu nction will stop operating when
The function will stop operating if an y of the following conditions are met:●
Hybrid system output restriction control
• The Intelligent Clearance Son ar system is disabled.
• The collision becomes avoidable with normal brake operation.
• The stationary object is no lo nger 6 to 13 ft. (2 to 4 m) away in the traveling direction
of the vehicle. ●
Brake control
• The Intelligent Clearance Son ar system is disabled.
• Approximately 2 seconds elapse after the vehicle is stopped by brake control.
• The brake pedal is depressed after the vehicle is stopped by brake control.
• The stationary object is no lo nger 6 to 13 ft. (2 to 4 m) away in the traveling direction
of the vehicle.■
Detection range of the Intellig ent Clearance Sonar function
The detection range of the Intelligent Cleara nce Sonar function differs from the detec-
tion range of the intu itive parking assist. ( → P. 337)
Therefore, even if the intuit ive parking assist detects an object and provides a warning,
the Intelligent Clearance Sonar function may not start operating. ■
If the Intelligent Clearance Sonar function has operated
If the vehicle is stopped due to operation of the Intelligent Clearance Sonar function, the
Intelligent Clearance Sonar system will be di sabled and the ICS OFF indicator will illumi-
nate.

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.

3514-5. Using the driving support systems
4
Driving
RX450h_RX450hL _U_OM48F85U■
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 Clearanc e 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

352 4-5. Using the driving support systems
RX450h_RX450hL _U_OM48F85U■
If the Intelligent Clearance Sonar function operates unnecessarily such as at a railroad
crossing
Even in the event that the Intelligent Cleara nce Sonar function operates unnecessarily,
such as at a railroad crossing, brake cont rol will be canceled afte r approximately 2 sec-
onds, allowing you to proceed forward and leave the area, Brake control can also be
canceled by depressing the brake pedal. Depressing the accelerator pedal again will
allow you to proceed forward and leave the area. ■
Situations in which the Intelligent Cleara nce Sonar Brake function may not operate
properly
In some situations such as the following , this function may not operate properly.●
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●
Vehicle surroundings
• When an object that cannot be detected is between the vehicle and a detected
object
• If an object such as a vehicle, motorcycle, bicycle or pedestrian cuts in front of the
vehicle or runs out from the side of the vehicle. ●
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 a sensor or the area around a sen-
sor is extremely hot or cold
• When strong winds are blowing