2011 Lexus IS F sensor

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CAUTION
Conditions under which the vehicle-to-vehicle distance control may not
function correctly
Apply the brakes as necessary in the following conditions as the radar sen-
sor may not be able to correctly detect vehicles ahead, and a fatal or serious
accident may result:
When water or snow thrown up by the surrounding vehicles hinders the
functioning of the sensor
When your vehicle is pointing upwards (caused by a heavy load in the
trunk etc.)
When the road curves or when the lanes are narrow
When steering wheel operation or your position in the lane is unstable
When the vehicle ahead of you decelerates suddenly
Handling the radar sensor
Observe the following to ensure the cruise control system can function
effectively.
Otherwise, the system may not function correctly and could result in an
accident.
Keep the sensor and front grille cover clean at all times.
Clean the sensor and front grille cover with a soft cloth so you do not
mark or damage them.
Do not subject the sensor or surrounding area to a strong impact.
If the sensor moves even slightly off position, the system may malfunc-
tion. If the sensor or surrounding area is subject to a strong impact, always
have the area inspected and adjusted by any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional.
Do not disassemble the sensor.
Do not attach accessories or stickers to the sensor, grille cover or sur-
rounding area.
Do not modify or paint the sensor and grille cover.
Do not replace them with non-genuine parts.

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Lexus parking assist-sensor
: If equipped
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
Rear center sensors
Multi-information display (P. 167)
Front corner sensor opera-
tion
Rear corner sensor opera-
tion
Rear center sensor opera-
tion

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The distance display and buzzer
When a sensor detects an obstacle, the direction of and the approx-
imate distance to the obstacle are displayed and the buzzer sounds.
Front corner sensors
Multi-information
displayApproximate distance
to obstacleBuzzer
50 to 40 cm
(1.6 to 1.3 ft.)Medium
40 to 30 cm
(1.3 to 1.0 ft.)Fast
30 cm (1.0 ft.) or lessContinuous
Switching the Lexus parking assist-sensor on (P. 333)
When on, an indicator is dis-
played to inform the driver
that the function is opera-
tional.

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IS F_EERear corner sensors
Rear center sensors
Multi-information
displayApproximate distance
to obstacleBuzzer
50 to 37.5 cm
(1.6 to 1.2 ft.)Medium
37.5 to 25 cm
(1.2 to 0.8 ft.)Fast
25 cm (0.8 ft.) or lessContinuous
Multi-information
displayApproximate distance
to obstacleBuzzer
150 to 60 cm
(4.9 to 2.0 ft.)Slow
60 to 45 cm
(2.0 to 1.5 ft.)Medium
45 to 35 cm
(1.5 to 1.1 ft.)Fast
35 cm (1.1 ft.) or lessContinuous

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Detection range of the sensors
Approximately 50 cm (1.6
ft.)
Approximately 150 cm (4.9
ft.)
The diagram shows the detec-
tion 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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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.
• A towing eyelet is 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
particular 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
If the display flashes and a message is displayed
P. 4 3 1
Customization that can be configured at any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional
Settings (e.g. buzzer volume) can be changed. (Customizable features P.
484)

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CAUTION
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).
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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PCS (Pre-Crash Safety system)
When the radar sensor detects possibility of a frontal collision, the pre-
crash safety system such as the brakes and seat belts are automatically
engaged to lessen impact and injuries to occupants as well as vehicle
damage.
Pre-crash seat belts
If the pre-crash sensor detects that a collision is unavoidable, the
pre-crash safety 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. 7 2 )
However, the system will not operate in the event of skidding when
the VSC system are disabled.
Pre-crash brake assist
When there is a high possibility of a frontal collision, the system
applies greater braking force in relation to how strongly the brake
pedal is depressed.
Pre-crash braking
When there is a high possibility of a frontal collision, the system
warns the driver using a warning light, warning display and buzzer.
If the system determines that a collision is unavoidable, the brakes
are automatically applied to reduce the collision speed. The pre-
hb ki f i b d d ff i h lli

: If equipped