2020 LEXUS LX570 sensor

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LX570_OM_OM60R61U_(U)4-5. Using the driving support systems
BSM (Blind Spot Monitor)
The Blind Spot Monitor is a system that has 2 functions:
●The BSM (Blind Spot Monitor) function
Assists the driver in making a
decision when changing lanes
●RCTA (Rear Cross Traffic Alert) function
Assists the driver when backing up
These functions use same sensors.
Summary of the Blind Spot Monitor

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LX570_OM_OM60R61U_(U)4-5. Using the driving support systems
Press or of the meter control switches, select .
Press or of the meter control swit
ches, select “BSM”, and then press
.
Press or of the meter control sw itches, select “BSM” or “RCTA”, and
then press .
■Outside rear view mirro r indicator visibility
In strong sunlight, the outside rear view mirror indicator may be difficult to see.
■Hearing RCTA buzzer
The RCTA buzzer may be difficult to hear over loud noises, such as if the audio system
volume is high.
■When “Blind Spot Monitor Unavailable” is shown on the multi-information display
Water, snow, mud, etc., may be built up in th e vicinity of the sensor area of bumper. (P. 373)
Removing the water, snow, mud, etc., from the vicinity of the sensor area of bumper should
return it to normal.
Also, the sensor may not function normally wh en used in extremely hot or cold weather.
■When “Blind Spot Monitor System Malfunction” is shown on the multi-information dis-
play
There may be a sensor malfunction or voltage abnormality. Have the vehicle inspected at
your Lexus dealer.
■Certification for the Blind Spot Monitor
For vehicles sold in the U.S.A., Hawaii, Guam and Puerto Rico
Turning the BSM function/RCTA function on/off
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For vehicles sold in Canada
WARNING
■Handling the radar sensor
One Blind Spot Monitor sensor is installed inside the left and right side of the vehicle
rear bumper respectively. Observe the follow ing to ensure the Blind Spot Monitor can
function correctly.
●Keep the sensors and the surrounding areas
on the rear bumper clean at all times.
If a sensor or its surrounding area on the rear
bumper is dirty or covered with snow, the
Blind Spot Monitor may not operate and a
warning message ( P. 372) will be dis-
played. In this situation, clear off the dirt or
snow and drive the vehicle with the operation
conditions of the BSM function ( P. 376)
satisfied for approximately 10 minutes. If the
warning message does not disappear, have
the vehicle inspected by your Lexus dealer.

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LX570_OM_OM60R61U_(U)4-5. Using the driving support systems
The BSM function uses radar sensors to de
tect the following vehicles traveling in
adjacent lanes and advises th e driver of the presence of such vehicles via the
indicators on the outside rear view mirrors.
Vehicles that are traveling in areas th at are not visible using the outside rear
view mirrors (the blind spots)
Vehicles that are approaching rapidly from behind in areas that are not visible
using the outside rear view mirrors (the blind spots)
WARNING
■Handling the radar sensor
●Do not subject a sensor or its surrounding area on the rear bumper to a strong
impact.
If a sensor is moved even slightly off po sition, the system may malfunction and vehi-
cles may not be detected correctly.
In the following situations , have your vehicle inspected by your Lexus dealer.
• A sensor or its surrounding area is subject to a strong impact.
• If the surrounding area of a sensor is scratched or dented, or part of it has become disconnected.
●Do not disassemble the sensor.
●Do not attach stickers to the sensor or surrounding area on the rear bumper.
●Do not modify the sensor or surrounding area on the rear bumper.
●Do not paint the rear bumper any colo r other than an official Lexus color.
BSM function
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■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 strong 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 standing 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 in 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 a bicycle carrier or other accessory is installed to 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 in 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

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LX570_OM_OM60R61U_(U)4-5. Using the driving support systems
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
RCTA function
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■Conditions under which the Rear Cross Traffic Alert function will not detect a vehicle
The Rear Cross Traffic Alert function is no t 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.
●Vehicles that the sensors cannot detect due to
obstructions

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LX570_OM_OM60R61U_(U)4-5. Using the driving support systems
■Conditions under which the Re
ar Cross Traffic Alert function may not function cor-
rectly
●The Rear Cross Traffic Alert 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 standing 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
• Immediately after the BSM function is turned on
• Immediately after the engine is started with the BSM function on • When backing up on a slope with a sharp change in grade
• When backing out of a shallow angle park- ing spot
• When the sensors cannot detect a vehicle due to obstructions