Toyota Tacoma 2018 Owner's Manual page 279

WARNING
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Sensor detection information
Pay particular attention to the following instances in where this may occur.
Failing to do so way result in the vehicle being unable to be driven or parked
safety and possibly cause an accident.
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The sensor's detection areas are limited to the areas around the vehicle's
rear bumper.
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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. (Wiping the sensors will resolve
this problem.)
• The sensor is frozen. (Thawing the area will resolve this problem.)
• 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 radio antenna.
• 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 Toyota suspension (lowered suspension, etc.) is
installed.
• A backlit license plate, license plate holder, etc., are installed.
• People may not be detected if they are wearing certain types and color-
ing of clothing.
• People, animals, and moving objects may not be able to be detected.
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.
4-5. Using the driving support systems
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