2009 Lexus ES350 sensor

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When driving
ES350_U_(L/O_0808)
Intuitive parking assist∗
The distance to obstacles measured by the sensors is communicated via
the multi-information display and a buzzer when parallel parking or
maneuvering into a garage. Always check the surrounding area when
using this system.
For vehicles equipped with a navigation system, refer to the separate
“Navigation System Owner’s Manual” for further details.
■Types of sensors
Front corner sensors
Rear corner sensors
Back sensors
■ Multi-information display ( →P. 131)
Front corner sensor opera-
tion
Rear corner sensor operation
Back sensor operation
∗: If equipped

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ES350_U_(L/O_0808)
The display and buzzer system■ Corner sensor operation displa y and distance to an obstacle
The system operates when the vehicle approaches within approxi-
mately 1.6 ft. (50 c m) of an obstacle.
Approximately 1.6 ft. (50 cm) to
1.2 ft. (37.5 cm) from the obsta-
cle
Approximately 1.2 ft. (37.5 cm)
to 0.8 ft. (25 cm) from the
obstacle
Flashing: Within 0.8 ft. (25 cm)
of the obstacle
■Intuitive parking assist switch
ON/OFF
When ON, an indicator on the
switch comes on to inform the
driver that the function is opera-
tional.

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When driving
ES350_U_(L/O_0808)■
Back sensor operation display and distance to an obstacle
The system operates when the vehicle approaches within approxi-
mately 4.9 ft. (150 cm) of an obstacle.
Approximately 4.9 ft. (150 cm)
to 2.0 ft. (60 cm) from the
obstacle
Approximately 2.0 ft. (60 cm) to
1.5 ft. (45 cm) from the obstacle
Approximately 1.5 ft. (45 cm) to
1.2 ft. (35 cm) from the obstacle
Flashing: Within 1.2 ft. (35 cm)
of the obstacle
■ Buzzer operation and di stance to the obstacle
A buzzer sounds when the corner sensors and back sensor are oper-
ating.
● The buzzer beeps faster as the vehicle approaches an obstacle.
When the vehicle comes within the following distance of the obsta-
cle, the buzzer sounds continuously.
•Corner sensors: Approximately 0.8 ft. (25 cm)
• Back sensors: Approximately 1.2 ft. (35 cm)
● When two or more obstacles are detected simultaneously, the
buzzer system responds to the nearest obstacle.
● If multiple obstacles are detected within 0.8 ft. (25 cm) in front and
behind the vehicle at the same time, the warning buzzer will change
in the following manner:
• If a continuous beep is sounding, and a new obstacle is detected
near a different area of the vehicle, the warning buzzer will sound
6 beeps then one continuous beep.
• If a continuous beep is sounding, and a new obstacle is detected within 0.8 ft. (25 cm) of a different area of the vehicle, the warn-
ing buzzer will sound 2 beeps then one continuous beep.

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Detection range of the sensorsApproximately 1.6 ft. (50 cm)
Approximately 4.9 ft. (150 cm)
Approximately 1.6 ft. (50 cm)
The diagram shows the detection
range of the sensors. Note that the
sensors cannot detect obstacles
that are extremely close to the
vehicle.
The range of the sensors may
change depending on the shape of
the object etc.

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When driving
ES350_U_(L/O_0808)
■Sensor detection information
●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.
• The sensor is frozen.
• 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
In addition to the examples above, there are instances in which, because of their
shapes, 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 radio waves
• Sharply-angled objects
• Low obstacles
• Tall obstacles with upper sections projecting outwards in the direction of your
vehicle

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■When the display flashes and a message is displayed
→P. 3 8 6
■Certification
For vehicles sold in U.S.A.
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation. For vehicles sold in Canada
This ISM device complies with Canadian ICES-001.
Cet appareil ISM est conforme a la norme NMB-001 du Canada.
■Customization that can be configured at Lexus dealer
Settings (e.g. buzzer volume) can be changed. (Customizable features →P. 4 4 7 )
CAUTION
■Caution when using the intuitive parking assist
Observe the following precautions.
Failing to do so may result in the vehicle being unable to be driven safely and possi-
bly cause an accident.
●Do not use the sensor at speeds in excess of 6 mph (10 km/h).
●Do not attach any accessories within the sensor range.
NOTICE
■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.

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ES350_U_(L/O_0808)
PCS (Pre-Collision System)∗
Radar sensorDetects vehicles or other obsta-
cles on or near the road ahead and
determines whether a collision is
imminent based on the position,
speed, and heading of the obsta-
cles. Grille cover
Radar sensor
Safety systems such as the brakes and seat belts are automatically
engaged to lessen impact and injuries to occupants as well as vehicle dam-
age when the radar sensor detects an unavoidable frontal collision.
■Pre-collision seat belts
If the pre-collision sensor detects that a collision is unavoidable, the pre-
collision system will retract the seat belt before the collision occurs.
The same will happen if the driver makes an emergency braking or loses
control of the vehicle. ( →P. 5 1 )
■Pre-collision brake assist
Applies greater braking force in relation to how strongly the brake pedal is
depressed.
■Obstacles not detected
The sensor cannot detect plastic obstacles such as pylons. There may also be occa-
sions when the sensor cannot detect pedestrians, animals, bicycles, motorcycles,
trees, or snowdrifts.
∗: If equipped

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When driving
ES350_U_(L/O_0808)
■The pre-collision system is operational when
●Seat belt (linked to the radar sensor)
• Vehicle speed is above 3 mph (5 km/h).
• The speed at which your vehicle is approaching the obstacle or oncomingvehicle exceeds 18 to 24 mph (30 to 40 km/h).
• The front occupants are wearing a seat belt.
●Seat belts (linked to brake operation)
• Vehicle speed is above 18 mph (30 km/h).
• The system detects sudden braking or skidding.
• The front occupants are wearing a seat belt.
●Brake assist
• Vehicle speed is above 18 mph (30 km/h).
• The speed at which your vehicle is approaching the obstacle or the vehicle is greater than 18 to 24 mph (30 to 40 km/h).
• The brake pedal is depressed.
■Conditions that may trigger the system even if there is no danger of collision
●When there is an object by the roadside at the entrance to a curve
●When passing an oncoming vehicle on a curve
●When driving over a narrow iron bridge
●When there is a metal object on the road surface
●When driving on an uneven road surface
●When passing an oncoming vehicle on a left-turn
●When your vehicle rapidly closes on the vehicle in front
When the system is activated in the situations described above there is also a possi-
bility that the seat belts will retract quickly and the brakes will be applied with a force
greater than normal. When the seat belt is locked in the retracted position, stop the
vehicle in a safe place, release the seat belt and refasten.
■When there is a malfunction in the system
Warning lights and/or warning messages will turn on or flash. ( →P. 375, 386)