2017 Lexus IS300h sensor

3164-5. Using the driving support systems
IS300h_EE(OM53D89E)
WARNING
■Sensor detection information
●The sensor’ detection areas are limited to the areas around the vehicle’ bumper.
●Certain vehicle conditions and surrounding environments, such as the following, may
affect the ability of the sensor s to correctly detect objects. Pay particular attention in the following situations. Failure to do so may result in the vehicle being driven
unsafely, possibly leading to an accident.
• 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 dis- play, or obstacles may not be detected.
• The sensor is covered in any way.
• The vehicle is leaning considerably to one side. • 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 lo ud 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 vehicle is equipped with a fender pole or wireless antenna. • Towing eyelets are installed.
• The bumper or sensor receives a strong impact.
• 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 obstacles draw too close to the sensor. • A non-genuine Lexus suspension (low ered suspension etc.) is installed.
• 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 obstacle may prevent a sensor from detecting it. Pay particular
attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materi als that absorb sound waves
• Sharply-angled objects • Low obstacles
• Tall obstacles with upper sections projec ting outwards in the direction of your
vehicle • People, animals and other moving objects
• People wearing certain types of clothing

3174-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
WARNING
●The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection distance
may shorten, or detect ion may be impossible.
• Obstacles may not be detected if they are too close to the sensor. • There will be a short delay between obstac le detection and display. Even at slow
speeds, there is a possibility that the ob stacle will come within the sensor’ detec-
tion areas before the display is shown and the buzzer sounds. • Thin posts or objects lower than th e sensor may not be detected when
approached, even if they have been detected once.
• It might be difficult to hear beeps due to the volume of audio system or air flow noise of the air conditioning system.
NOTICE
■When using Lexus parking assist-sensor
In the following situations, the system may not function correctly due to a sensor mal-
function, etc. Have the vehicle checked by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
●The Lexus parking assist-sensor operation display 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 without 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.
■Notes when washing the vehicle
Do not apply intensive bursts of wa ter or steam to the sensor area.
Doing so may result in the sensor malfunctioning.

3194-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
■Screen display
The parking assist monitor screen will be displayed if the shift position is
shifted to R while the power switch is in ON mode.
Lexus parking assist-sensor
(if equipped)
Rear Crossing Traffic Alert
(if equipped)
A simplified image is displayed on the upper part of the screen when an
obstacle is detected.
■Using the system
Use any of the following modes.
●Estimated course line display mode ( P. 321)
Estimated course lines are dis-
played which move in accor-
dance with the operation of the
steering wheel.
Using the Lexus parking assist monitor
1
2

3314-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
The estimated course lines move even though the steering wheel is straight
There is a malfunction in the signals being
output by the steering sensor.
Have the vehicle inspected by any autho- rized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
 Guide lines are not displayed
The trunk lid is open.
Close the trunk lid.
If this does not resolve the symptom, have the vehicle inspected by any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
 The estimated course lines are not displayed
• The steering wheel has been moved while the battery was being reinstalled.
• Battery power is low.
• The steering sensor has been rein- stalled.
• There is a malfunction in the signals
being output by the steering sensor.
Stop the vehicle, and turn the steering wheel as far as it will go to the left and
right.
If this does not resolve the symptom, have the vehicle inspected by any authorized
Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
Likely causeSolution

3344-5. Using the driving support systems
IS300h_EE(OM53D89E)
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
●The RCTA (Rear Crossing Traffic Alert) function
Assists the driver when backing up
These functions use same sensors.
BSM (Blind Spot Monitor)
: If equipped
Summary of the Blind Spot Monitor

3364-5. Using the driving support systems
IS300h_EE(OM53D89E)
■Outside rear view mirror indicator visibility
In strong sunlight, the outside rear view mirror indicator may be difficult to see.
■Hearing the RCTA buzzer
The RCTA buzzer may be difficult to hear over loud noises, such as if the audio system
volume is high.
■When there is a malfunction in the Blind Spot Monitor
If a system malfunction is detected due to any of the following, a warning message will be
displayed: ( P. 581)
●A sensor is malfunctioning
●A sensor is dirty or covered with snow or a sticker
●The outside temperature is extremely high or low
●Sensor voltage is abnormal
●A sensor is misaligned
■Certification for the Blind Spot Monitor

3394-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
WARNING
■Handling the radar sensor
Blind Spot Monitor sensors are installed be hind 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 position, the system may malfunction and vehi-
cles may not be detected correctly. In the following situations, have your ve hicle 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 sc ratched 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. 581) 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. 341) satisfied 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.

3404-5. Using the driving support systems
IS300h_EE(OM53D89E)
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 dr iving. 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.