2017 Lexus IS200t Owner's Manuals

3294-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
WARNING
■Handling the radar sensor
Blind Spot Monitor sensors are installed behind the left and right sides of the rear
bumper respectively. Observe the following to ensure the Blind Spot Monitor can
function correctly.
●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 any authorized Lexus
retailer or Lexus authorized repa irer, or any reliable repairer.
• 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 them 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 color other than an official Lexus color.
●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. 560) 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. 331) sat-
isfied for approximately 10 minutes. If the
warning message does not disappear, have
the vehicle inspected by any authorized
Lexus retailer or Lexus authorized repairer, or
any reliable repairer.

3304-5. Using the driving support systems
IS200t_EE(OM53D77E)
The Blind Spot Monitor function uses radar sensors to detect vehicles that are
traveling in an adjacent lane in the area that is not reflected in the outside rear
view mirror (the blind spot), and advises the driver of the vehicles existence via
the outside rear view mirror indicator.
The areas that vehicles can be detected in are outlined below.
The range of each detection area is:Approximately 0.5 m (1.6 ft.) to 3.5
m (11.5 ft.) from either side of the
vehicle
*
*
: The area between the side of the vehicle and 0.5 m (1.6 ft.) from the side of the
vehicle cannot be detected.
Approximately 3 m (9.8 ft.) from the
rear bumper
Approximately 1 m (3.3 ft.) forward
of the rear bumper
BSM function
BSM function detection areas
1
2
3
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 BSM function is a supplementary function which alerts the driver that a vehicle is in
a blind spot of the outside rear view mirrors or is approaching rapidly from behind into
a blind spot. Do not overly rely on the BSM function. As the function cannot judge if it is
safe to change lanes, over reliance could lead to an accident resulting in death or seri-
ous injury.
As the system may not function correctly under certain conditions, the driver’s own
visual confirmation of safety is necessary.

3314-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
■The BSM function is operational when
The BSM function is operational when a ll of the following conditions are met:
●The BSM function is on.
●The shift lever is in a position other than R.
●The vehicle speed is greater than approximately 16 km/h (10 mph).
■The BSM function will detect a vehicle when
The BSM function will detect a vehicle present in the detection area in the following situ-
ations:
●A vehicle in an adjacent lane overtakes your vehicle.
●Another vehicle enters the detection area when it changes lanes.
■Conditions under which the BSM function will not detect a vehicle
The BSM function is not designed to detect the following types of vehicles and/or
objects:
●Small motorcycles, bicycles, pedestrians, etc.*
●Vehicles traveling in the opposite direction
●Guardrails, walls, signs, parked vehi cles and similar stationary objects*
●Following vehicles that are in the same lane*
●Vehicles traveling 2 lanes away from your vehicle*
*
: Depending on the conditions, detection of a vehicle and/or object may occur.

3324-5. Using the driving support systems
IS200t_EE(OM53D77E)
■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 sticker, etc. is covering the sensor or surrounding area on the rear bumper
• When driving on a road surface 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 consecutive 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 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 strong 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 consecutive steep inclines, such as hills, dips in the road,
etc.
• When vehicle lanes are narrow, or when driving on the edge of a lane, and a vehicle traveling in a lane other than the adjacent 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)

3334-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
The RCTA function uses radar sensors to detect vehicles approaching from the
right or left at the rear of the vehicle and 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
1
2

3344-5. Using the driving support systems
IS200t_EE(OM53D77E)
■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.
DisplayContent
A vehicle is approaching from the le ft 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. 326)
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 fu nction which alerts the driver that a vehi-
cle is approaching from the right or left at th e rear of the vehicle. As the RCTA function
may not function correctly under certain conditions, the driver’s own visual confirma-
tion of safety is necessary. Over reliance on this function may lead to an accident
resulting in death or serious injury.

3354-5. Using the driving support systems
4
Driving
IS200t_EE(OM53D77E)
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 BSM function is on.
●The shift lever is in R.
●The vehicle speed is less than approximately 8 km/h (5 mph).
●The approaching vehicle speed is between approximately 8 km/h (5 mph) and 28 km/h
(18 mph).
RCTA function detection areas
Approaching vehicleSpeedApproximate
alert distance
Fast28 km/h (18 mph)20 m (65 ft.)
Slow8 km/h (5 mph)5.5 m (18 ft.)
1

3364-5. Using the driving support systems
IS200t_EE(OM53D77E)
■Conditions under which the RCTA function 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 parking 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 strong impact to the sensor or its surround-
ing area
• When mud, snow, ice, a sticker, etc. is covering the sensor or surrounding area on the rear bumper
• When driving on a road surface 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
• 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