2013 Lexus IS300h parking sensors

1001-3. Theft deterrent system
IS300h_EE(OM53B95E)
Canceling and automatic re-enabling of the intrusion sensor and tilt sensor
The alarm will still be set even when the intrusion sensor and tilt sensor are can-
celed.
After the intrusion sensor and tilt sensor are canceled, pressing the power
switch or unlocking the doors using the entry function or wireless remote con-
trol will re-enable the intrusion sensor and tilt sensor.
The intrusion sensor and tilt sensor will automatically be re-enabled when the
alarm system is deactivated.
Intrusion sensor detection considerations
The sensor may trigger the alarm in the following situations:
Places with extreme vibrations or noises, or situations in which the vehicle is
subject to repeated impacts or vibrations:
• When parked in a parking garage
• When the vehicle is transported on a ferry, trailer, train, etc.
• When ice adhering to the vehicle is removed
• When the vehicle is in an automatic or high-pressure car wash
• When in a hail or lightning storm
A window or the moon roof is open.
In this case, the sensor may detect the fol-
lowing:
• Wind or the movement of objects such
as leaves and insects inside the vehicle
• Ultrasonic waves emitted from devices
such as the intrusion sensors of other
vehicles
• The movement of people outside the
vehicle
Unstable items, such as dangling accesso-
ries or clothes hanging on the coat hooks,
are in the vehicle.

1011-3. Theft deterrent system
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For safety and security
IS300h_EE(OM53B95E)
Tilt sensor detection considerations (if equipped)
The sensor may trigger the alarm in the following situations:
The vehicle is transported by a ferry, trailer, train, etc.
The vehicle is parked in a parking garage.
The vehicle is inside a car wash that moves the vehicle.
Any of the tires loses air pressure.
The vehicle is jacked up.
An earthquake occurs or the road caves in.
NOTICE
To ensure the intrusion sensor function correctly
Installing accessories other than genuine Lexus parts or leaving objects
between the driver’s seat and front passenger’s seat may reduce the detection
performance.
To ensure that the sensors operate prop-
erly, do not touch or cover them.
Do not spray air fresheners or other prod-
ucts directly into the sensor holes.

2714-5. Using the driving support systems
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Driving
IS300h_EE(OM53B95E)
Types of sensors
Lexus parking assist-sensor switch
Turns the Lexus parking assist-
sensor on/off
When on, the indicator light
comes on to inform the driver that
the system is operational.
Lexus parking assist-sensor
: If equipped
The distance from your vehicle to nearby obstacles when parallel parking
or maneuvering into a garage is measured by the sensors and communi-
cated via the multi-information display, Lexus Display Audio screen (if
equipped) and a buzzer. Always check the surrounding area when using
this system.
Front center sensors
Front corner sensorsRear corner sensors
Rear center sensors1
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2754-5. Using the driving support systems
4
Driving
IS300h_EE(OM53B95E)
You can change the warning beep volume and Lexus Display Audio
screen operating conditions.
Press the “MENU” button on the Lexus Display Audio controller. (P.
318)
Select “Setup” on the “Menu” screen.
Select “Vehicle” on the “Setup” screen.
Select “LEXUS park assist” on the “Vehicle settings” screen.
Select the desired button.
The alert volume can be
adjusted.
On or off can be selected for
Lexus parking assist-sensor
display.
Front or rear center sensors
display and tone indication can
be set.
The Lexus parking assist-sensor can be operated when
Front center sensors:
• The power switch is in ON mode.
• The shift lever is in a position other than P or R.
• The vehicle speed is less than about 10 km/h (6 mph).
Front corner sensors:
• The power switch is in ON mode.
• The shift lever is in a position other than P.
• The vehicle speed is less than about 10 km/h (6 mph).
(At any speed when the shift lever is in R)
Rear corner and rear center sensors:
• The power switch is in ON mode.
• The shift lever is in R.
Lexus parking assist-sensor display
When an obstacle is detected while the rear view monitor system is in use, the
warning indicator will appear in the top right of the screen even if the display set-
ting has been set to off.
Setting up Lexus parking assist-sensor
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2764-5. Using the driving support systems
IS300h_EE(OM53B95E)
Sensor detection information
The sensor’s detection areas are limited to the areas around the vehicle’s front
corner and rear bumpers.
Certain vehicle conditions and the surrounding environment may affect the
ability of the sensor to correctly detect obstacles. Particular instances where this
may occur are listed below.
• There is dirt, snow or ice on the sensor. (Wiping the sensors will resolve this
problem.)
• The sensor is frozen. (Thawing the area will resolve this problem.)
In especially cold weather, if a sensor is frozen the screen may show an
abnormal display, 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 loud 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 (lowered suspension etc.) is installed.
• People may not be detected if they are wearing certain types of clothing.
In addition to the examples above, there are instances in which, because of their
shape, signs and other objects may be judged by the sensor to be closer than they
are.
The shape of the obstacle may prevent the sensor from detecting it. Pay particu-
lar attention to the following obstacles:
• Wires, fences, ropes, etc.
• Cotton, snow and other materials that absorb sound waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of
your vehicle
The following situations may occur during use.
• Depending on the shape of the obstacle and other factors, the detection dis-
tance may shorten, or detection may be impossible.
• Obstacles may not be detected if they are too close to the sensor.
• There will be a short delay between obstacle detection and display. Even at
slow speeds, there is a possibility that the obstacle will come within the sen-
sor’s detection areas before the display is shown and the warning beep
sounds.
• Thin posts or objects lower than the 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 the audio system or
air flow noise of the air conditioning system.

2784-5. Using the driving support systems
IS300h_EE(OM53B95E)
CAUTION
When using the Lexus parking assist-sensor
Observe the following precautions.
Failing to do so may result in the vehicle being unable to be driven safely and
possibly cause an accident.
Do not use the sensor at speeds in excess of 10 km/h (6 mph).
The sensors’ detection areas and reaction times are limited. When moving
forward or reversing, check the areas surrounding the vehicle (especially the
sides of the vehicle) for safety, and drive slowly, using the brake to control the
vehicle’s speed.
Do not install accessories within the sensors’ detection areas.
NOTICE
When using Lexus parking assist-sensor
In the following situations, the system may not function correctly due to a sen-
sor malfunction etc. Have the vehicle checked by any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.
The Lexus parking assist-sensor operation display flashes, and a beep sounds
when no obstacles are detected.
If the area around a sensor collides with something, or is subjected to strong
impact.
If the bumper or grille 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 when there is no ice, snow or mud on the sensor, it is
likely that the sensor is malfunctioning.
Notes when washing the vehicle
Do not apply intensive bursts of water 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(OM53B95E)
Conditions under which the Rear Crossing Traffic Alert function will not detect a
vehicle
The Rear Crossing Traffic Alert function is not designed to detect the following
types of vehicles and/or objects.
Small motorcycles, bicycles, pedestrians etc.*
Vehicles approaching from directly behind
Guardrails, walls, signs, parked vehicles and similar stationary objects*
Vehicles moving away from your vehicle
Vehicles approaching from the parking spaces next to your vehicle*
Vehicles backing up in the parking space next to your vehicle
*: Depending on conditions, detection of a vehicle and/or object may occur.
Conditions under which the Rear Crossing Traffic Alert function may not func-
tion correctly
The Rear Crossing Traffic Alert function may not detect vehicles correctly in the
following conditions:
During bad weather such as heavy rain, fog, snow etc.
When ice or mud etc. is attached to the rear bumper
When multiple vehicles approach continuously
Shallow angle parking
When a vehicle is approaching at high speed
When parking on a steep incline, such as hills, a dip in the road etc.
Directly after the BSM main switch is set to on
When your vehicle is towing a trailer
Directly after the hybrid system is started with the BSM main switch on
Vehicles that the sensors cannot detect
because of obstacles

5168-2. Steps to take in an emergency
IS300h_EE(OM53B95E)
Indicates that:
• The brake fluid level is low; or
• The brake system is malfunctioning
A buzzer also sounds.
Immediately stop the vehicle in a safe place and
contact any authorized Lexus dealer or repairer,
or another duly qualified and equipped profes-
sional. Continuing to drive the vehicle may be
dangerous.
Indicates a malfunction in the hybrid system
A buzzer also sounds.
Immediately stop the vehicle in a safe place and
contact any authorized Lexus dealer or repairer,
or another duly qualified and equipped profes-
sional.
Indicates that one or more of the doors is not fully
closed
The system also indicates which doors are not
fully closed.
If the vehicle reaches a speed of 5 km/h (3 mph),
flashes and a buzzer sounds to indicate
that the door(s) are not yet fully closed.
Make sure that all the doors are closed.
Indicates that the hood is not fully closed
If the vehicle reaches a speed of 5 km/h (3 mph),
flashes and a buzzer sounds to indicate
that the hood is not yet fully closed.
Close the hood.
Indicates that the trunk is not fully closed
If the vehicle reaches a speed of 5 km/h (3 mph),
flashes and a buzzer sounds to indicate
that the trunk is not yet fully closed.
Close the trunk.
(If equipped)
Indicates a malfunction in the Lexus parking
assists-sensor
The assist-sensors flash.
A buzzer also sounds.
Have the vehicle inspected by any authorized
Lexus dealer or repairer, or another duly quali-
fied and equipped professional.
Warning messageDetails/Actions