Toyota Prius Owner's Manual page 363

SENSOR DETECTION RANGE
WHEN IN PERPENDICULAR
PARKING ASSIST MODE
SENSOR DETECTION RANGE
WHEN IN PARALLEL PARKING
ASSIST MODE
1. INTELLIGENT PARKING ASSIST
CAUTION
 A sensor may not operate properly in the
following situations:
• There is ice, snow or mud on the sen-
sor. (When it is removed, the normal
operation will return.)
• The sensor is frozen. (When the sen-
sor warms up, it will return to normal.)
At low temperatures in particular, sen-
sors that are frozen may not detect a
parked vehicle.
• The sensor is covered in any way.
• When the vehicle is tilted.
• In extreme hot or cold weather.
• When driving on bumpy roads, slopes,
gravelled roads or grass.
• Devices issuing ultrasonic waves are
operated around your vehicle, such as
a horn from another vehicle, motorcy-
cle engine, air braking sound from
heavy-duty vehicles.
• When rain or water is splashed over
the vehicle.
• When a radio antenna or fender pole is
mounted on your vehicle.
• The sensor approaches too close to a
parked vehicle.
• The bumper or sensor receives a
strong impact.
 Do not attach any accessories within the
detection range of the sensors.
PRIUS + (EE) NAVI 47761E
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