2019 LEXUS RX350 Owners Manual

320 4-5. Using the driving support systems
RX350/RX350L_U ■
Conditions under which the BSM function may not function correctly ●
The BSM function may not detect vehicles correctly in the following situations:
• When the sensor is misaligned due to a stro ng impact to the sensor or its surround-
ing area
• When mud, snow, ice, a sticke r, etc. is covering the sensor or surrounding area on
the rear bumper
• When driving on a road surf ace that is wet with standi ng water during bad weather,
such as heavy rain, snow, or fog
• When multiple vehicles are approaching wi th only a small gap between each vehicle
• When the distance between your vehicle and a following vehicle is short
• When there is a significant difference in speed between your vehicle and the vehicle
that enters the detection area
• When the difference in speed between your vehicle and another vehicle is changing
• When a vehicle enters a detection area traveling at about the same speed as your
vehicle
• As your vehicle starts from a stop, a vehicle remains in the detection area
• When driving up and down cons ecutive steep inclines, such as hills, dips on the road,
etc.
• When driving on roads with sharp bends, consecutive curves, or uneven surfaces
• When vehicle lanes are wide, or when driving on the edge of a lane, and the vehicle
in an adjacent lane is far away from your vehicle
• When towing a trailer (vehicles with towing package)
• When items such as a bicycle carrier are installed on the rear of the vehicle
• When there is a significant difference in height between your vehicle and the vehicle
that enters the detection area
• Immediately after the BSM function is turned on ●
Instances of the BSM function unnecessarily detecting a vehicle and/or object may
increase in the following situations:
• When the sensor is misaligned due to a stro ng impact to the sensor or its surround-
ing area
• When the distance between your vehicle and a guardrail, wall, etc. that enters the
detection area is short
• When driving up and down cons ecutive steep inclines, such as hills, dips on the road,
etc.
• When vehicle lanes are narrow, or when driv ing on the edge of a lane, and a vehicle
traveling in a lane other than the ad jacent lanes enters the detection area
• When driving on roads with sharp bends, consecutive curves, or uneven surfaces
• When the tires are slipping or spinning
• When the distance between your vehicle and a following vehicle is short
• When a bicycle carrier or other accessory is installed to the rear of the vehicle
• When towing a trailer (vehicles with towing package)

3214-5. Using the driving support systems
4
Driving
RX350/RX350L_U The RCTA function uses radar sensors to detect vehicles approaching from the
right or left at the rear of the vehicle an d alerts the driver of the presence of such
vehicles by flashing the outside rear view mirror indicators and sounding a
buzzer.
Approaching vehicles
Detection areas of approaching vehicles ■
Rear Cross Traffic Auto Brake function (if equipped)
When the Intelligent Clearance Sonar wi th Rear Cross Traffic Auto Brake is
enabled and a vehicle approaching from the right or left at the rear of the vehi-
cle is detected, the Rear Cross Traffic Auto Brake function will perform brake
control to reduce the likelihood of an impact with the approaching vehicle.
Intelligent Clearance Sonar with Re ar Cross Traffic Auto Brake:  P. 336RCTA function
1
2

322 4-5. Using the driving support systems
RX350/RX350L_U ■
RCTA icon display (if equipped)
When a vehicle approaching from the right or left at the rear of the vehicle is
detected, the following will be displayed on the audio system screen. Display Content
A vehicle is approaching from the left at the rear of the vehicle
A vehicle is approaching from the right at the rear of the vehicle
Vehicles are approaching from both sides of the vehicle
The RCTA function is malfunctioning (  P. 315)
WARNING ■
Cautions regarding the use of the function
The driver is solely responsible for safe driving. Always drive safely, taking care to
observe your surroundings.
The RCTA function is only a supplementary function which alerts the driver that a vehi-
cle is approaching from the right or left at the rear of the vehicle. As the RCTA function
may not function correctly under certain cond itions, the driver’s own visual confirma-
tion of safety is necessary. Over reliance on this function may lead to an accident
resulting death or serious injury.

3234-5. Using the driving support systems
4
Driving
RX350/RX350L_U The areas that vehicles can be detected in are outlined below.
The buzzer can alert the driver of faster vehicles approaching from farther away.
Example: ■
The RCTA function is operational when
The RCTA function operates when all of the following conditions are met: ●
The RCTA function is on. ●
The shift lever is in R. ●
The vehicle speed is less than approximately 5 mph (8 km/h). ●
The approaching vehicle speed is between approximately 5 mph (8 km/h) and 18 mph
(28 km/h).RCTA function detection areas
Approaching vehicle Speed Approximate
alert distance
Fast 18 mph (28 km/h) 65 ft. (20 m)
Slow 5 mph (8 km/h) 18 ft. (5.5 m) 1

324 4-5. Using the driving support systems
RX350/RX350L_U ■
Conditions under which the RCTA fu nction will not detect a vehicle
The RCTA 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.■
Conditions under which the RCTA function may not function correctly ●
The RCTA function may not detect vehicles correctly in the following situations:
• When the sensor is misaligned due to a stro ng impact to the sensor or its surround-
ing area
• When mud, snow, ice, a sticke r, etc. is covering the sensor or surrounding area on
the rear bumper
• When driving on a road surf ace that is wet with standi ng water during bad weather,
such as heavy rain, snow, or fog
• When multiple vehicles are approaching wi th only a small gap between each vehicle
• When a vehicle is approaching at high speed
• When towing a trailer (vehicles with towing package) ●
Vehicles that the sensors cannot detect due to
obstructions
• When backing up on a slope with a sharp
change in grade

3254-5. Using the driving support systems
4
Driving
RX350/RX350L_U • Immediately after the RCTA function is turned on
• Immediately after the engine is started with the RCTA function on
●
Instances of the RCTA function unnecessari ly detecting a vehicle and/or object may
increase in the following situations:
• When a vehicle passes by th e side of your vehicle
• When the distance between your vehicle and metal objects, such as a guardrail,
wall, sign, or parked vehicle, which may re flect electrical waves toward the rear of
the vehicle, is short
You can change the BSM function/RCTA function settings.
Press the “MENU” button on the Remote Touch, and then select on the
screen.
Select “Vehicle”, and then select “Blind Spot Monito r Settings” on the screen.
Select the desired setting. (  P. 731)• When backing out of a shallow angle park-
ing spot
• When the sensors cannot detect a vehicle
due to obstructions
• When the parking space faces a street and
vehicles are being driven on the street
Setting up BSM function/RCTA function 1
2
3

326 4-5. Using the driving support systems
RX350/RX350L_U Front corner sensors
Front center sensors
Rear corner sensors
Rear center sensors
Press “  ” or “  ” of the meter control
switches, select .
Press “  ” or “  ” of the meter control
switches, select “Parking Assist”.
When on, the indicator light comes on
to inform the driver that the system is
operational.Intuitive parking assist 
 : If equippedThe distance from your vehicle to a ne arby wall or othe r stationary object
when parallel parking or maneuvering into a garage is measured by the sen-
sors and communicated via the displays and a buzzer. Always check the sur-
rounding area when using this system.
Types of sensors 
Except F SPORT models 
F SPORT models
Turning the intuitive parking assist on/off 1
2
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4
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3274-5. Using the driving support systems
4
Driving
RX350/RX350L_U When the sensors detect an obstacle, the following displays inform the driver of
the position and distance to the obstacle. ■
Multi-information display
Front corner sensor operation
Front center sensor operation
Rear corner sensor operation
Rear center sensor operation■
Lexus Display Audio or navigation system (8-inch display) screen
Intuitive parking assist When the vehicle is moving forward.
A graphic is automatically displayed
when an obstacle is detected. The
screen can be set so that the graphic
is not displayed. (  P. 332)
: Select to mute the buzzer
sounds.
Intuitive parking assist
Rear Cross Traffic Alert (if
equipped)
When the vehicle is moving back-
ward. A simplified image is displayed on
the upper part of the screen when an
obstacle is detected.Display 1
2
3
4
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2
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