2010 Lexus ES 350 Owners Manual - Page 226

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2-4. Using other driving systems

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Sensor detection information

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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.

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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