Toyota Highlander 2020 Owner's Manual page 301

ate properly.
●
Weather
• When a sensor or the area around
a sensor is extremely hot or cold
• When strong winds are blowing
• If a sensor is covered with ice,
snow, dirt, etc. (when cleared, the
system will return to normal)
• If heavy rain or water strikes a
sensor
• When driving in inclement weather
such as fog, snow or a sandstorm
• When the sensor is frozen (Once
the sensor thaws, the system will
return to normal)
●
Vehicle surroundings
• When an object that cannot be
detected is between the vehicle
and a detected object
• If an object such as a vehicle,
motorcycle, bicycle or pedestrian
cuts in front of the vehicle or runs
out from the side of the vehicle
• The vehicle is approaching a tall
or curved curb.
• On an extremely bumpy road, on
an incline, on gravel, or on grass.
• If objects draw too close to the
sensor.
●
Other ultrasonic waves sources
• When vehicle horns, vehicle
detectors, motorcycle engines, air
brakes of large vehicles, the clear-
ance sonar of other vehicles or
HIGHLANDER_U
4-5. Using the driving support systems
other devices which produce ultra-
sonic waves are near the vehicle
• If a sticker or an electronic compo-
nent, such as a backlit license
plate (especially fluorescent type),
fog lights, fender pole or wireless
antenna is installed near a sensor
●
Changes in the vehicle posture
• If the vehicle is significantly tilted
• If the front of the vehicle is raised
or lowered due to the carried load
• If the orientation of a sensor has
been changed due to a collision or
other impact
• When equipment that may
obstruct a sensor is installed, such
as a bumper protector (an addi-
tional trim strip, etc.), bicycle car-
rier, or snow plow
• If the suspension has been modi-
fied or tires of a size other than
specified are installed
• If a sensor has been painted or
covered with a sticker, etc.
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