2017 Lexus IS300h Owner's Manual

3294-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
●Distance guidelines
Visually check the surroundings
and the area behind the vehicle.
On the screen, it appears that a
truck is parking at point . How-
ever, in reality if you back up to
point , you will hit the truck.
On the screen, it appears that
is closest and is farthest away.
However, in reality, the distance to
and is the same and is
farther than and .
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1
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3
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3304-5. Using the driving support systems
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■If you notice any symptoms
If you notice any of the following symp toms, refer to the likely cause and the
solution, and re-check.
If the symptom is not resolved by the solution, have the vehicle inspected by
any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer.
Things you should know
Likely causeSolution
 The image is difficult to see
• The vehicle is in a dark area
• The temperature around the lens is either high or low
• The outside temperature is low
• There are water droplets on the cam- era
• It is raining or humid
• Foreign matter (mud, etc.) is adhering to the camera
• There are scratches on the camera
• Sunlight or headlights are shining directly into the camera
• The vehicle is under fluorescent lights,
sodium lights, me rcury lights etc.
If this happens due to these causes, it does not indicate a malfunction.
Back up while visually checking the vehi-
cle’s surroundings. (Use the monitor again once conditions have been
improved.)
The image on the Lexus parking assist monitor system screen can be adjusted.
( P. 383)
The image is blurry
Dirt or foreign matter (such as water
droplets, snow, mud, etc.) is adhering to the camera.
Flush the camera with a large quantity of
water and wipe the camera lens clean with a soft and wet cloth.
 The image is out of alignment
The camera or surrounding area has received a strong impact.
Have the vehicle inspected by any autho-
rized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
 The guide lines are very far out of alignment
The camera position is out of alignment.Have the vehicle inspected by any autho- rized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
• The vehicle is tilted (there is a heavy
load on the vehicle, tire pressure is low due to a tire puncture, etc.)
• The vehicle is used on an incline.
If this happens due to these causes, it
does not indicate a malfunction. Back up while visually checking the vehi-
cle’s surroundings.

3314-5. Using the driving support systems
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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

3324-5. Using the driving support systems
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WARNING
■When using the Lexus parking assist monitor system
The parking assist monitor is a supplemental device intended to assist the driver when
backing up. When backing up, be sure to chec k visually behind and all around the vehi-
cle before proceeding.
Observe the following precautions to avoid an accident that could result in death or
serious injuries.
●Never depend on the parking assist monitor entirely when backing up. The image and the position of the guide lines displayed on the screen may differ from the actual
state.
Use caution, just as you would when backing up any vehicle.
●Be sure to back up slowly, depressing the brake pedal to control vehicle speed.
●If you seem likely to hit nearby vehicles, obstacles, people or mount the shoulder,
depress the brake pedal to stop the vehicle.
●The instructions given are only guidelines.
When and how much to turn the steering wheel will vary according to traffic condi-
tions, road surface conditions, vehicle condit ion, etc. when parking. It is necessary to be fully aware of this before using the parking assist system.
●When parking, be sure to check that the parking space will accommodate your vehi-
cle before maneuvering into it.
●Do not use the parking assist monitor in the following cases:
• On icy or slick road surfaces, or in snow
• When using tire chains or emergency tires • When the trunk lid is not closed completely
• On roads that are not flat or stra ight, such as curves or slopes.
●In low temperatures, the screen may darken or the image may become faint. The
image could distort when the vehicle is movi ng, or you may become unable to see the
image on the screen. Be sure to check dire ct visually and with the mirrors all around the vehicle before proceeding.
●If the tire sizes are changed, the position of the guide lines displayed on the screen
may change.
●The camera uses a special lens. The distances between objects and pedestrians that
appear in the image displayed on the screen will differ from the actual distances.
( P. 326)
●Estimated course line display mode: If the steering wheel is straight and the vehicle
width guide lines and the estimated course li nes are not in alignment, have the vehicle
inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reli- able repairer.

3334-5. Using the driving support systems
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Driving
IS300h_EE(OM53D89E)
NOTICE
■How to use the camera
●The parking assist monitor may not operate properly in the following cases.
• If the back of the vehicle is hit, the posi tion and mounting angle of the camera may
change. • As the camera has a water proof constr uction, do not detach, disassemble or
modify it. This may cause incorrect operation.
• When cleaning the camera lens, flush the camera with a large quantity of water and wipe it with a soft and wet cloth. St rongly rubbing the camera lens may cause
the camera lens to be scratched and unable to transmit a clear image.
• Do not allow organic solvent, car wax, window cleaner or glass coat to adhere to the camera. If this happens, wi pe it off as soon as possible.
• If the temperature changes rapidly, such as when hot water is poured on the vehi-
cle in cold weather, the system may not operate normally. • When washing the vehicle, do not apply in tensive bursts of water to the camera or
camera area. Doing so may result in the camera malfunctioning.
• When the camera is used under fluorescent lights, sodium light or mercury light etc., the lights and the illuminated areas may appear to flicker.
●Do not expose the camera to strong impact as this could cause a malfunction. If this happens, have the vehicle inspected by any authorized Lexus retailer or Lexus
authorized repairer, or any reliab le repairer as soon as possible.

3344-5. Using the driving support systems
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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

3354-5. Using the driving support systems
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Driving
IS300h_EE(OM53D89E)
BSM main switch
Pressing the switch turns the system on or off. When the switch is set to on, the
switch’s indicator illuminates and the buzz er sounds. Common switch for BSM func-
tion and RCTA function.
Outside rear view mirror indicators
BSM function:
When a vehicle is detected in the blind spot, the outside rear view mirror indicator
comes on while the turn signal lever is not operated. If the turn signal lever is oper- ated toward the detected side, the outs ide rear view mirror indicator flashes
RCTA function:
When a vehicle approaching from the right or left at the rear of the vehicle is detected, both outsid e rear view mirror indicators will flash.
RCTA buzzer (RCTA function)
If a vehicle approaching from the right or left at the rear of the vehicle is detected, a
buzzer will sound. The buzzer also sounds for approximately 1 second immediately after the BSM function is operated to turn the system on.
Monitor screen display (RCTA function)
If a vehicle approaching from the right or left at the rear of the vehicle is detected, the
RCTA icon ( P. 344) for the detected side will be displayed on the monitor screen. This illustration shows an example of a vehi cle approaching from the left at the rear of
the vehicle.
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3364-5. Using the driving support systems
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■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