Toyota Prius Owner's Manual page 327

CAUTION
 If the road surface has level variations or
a gradient between the starting position
and target parking position, it will not be
possible to correctly set the location,
which may cause the parking position to
be misaligned or crooked. In this case,
do not use the parking assist mode.
 If the red area which denotes an area
unsuitable for parking overlaps with the
lines of the parking space, you will be
unable to park, as the parking space is
judged as being an area unsuitable for
parking. Progress to a position where
the parking space lines do not overlap
with such an area.
1. INTELLIGENT PARKING ASSIST
8
Position yourself as you would when
backing up normally, and rest your
hands on the steering wheel without
applying any pressure. Check your
surroundings and behind the vehicle
for safety, and slowly back up, using
the brake pedal to control the vehicle's
speed.
 If you touch
, assistance is canceled.
 If the vehicle's backing up speed is too
fast, a warning tone will sound and the
message "Speed is too fast." will be dis-
played. If you continue to back up at that
speed, the system will be disabled. Back
up at a speed that does not cause the
warning tone to sound.
 The blue frame displayed on the screen is
approximately the same size as your vehi-
cle. (The blue frame displayed when set-
ting the target parking position is the size
of a normal parking space.)
PRIUS + (EE) NAVI 47761E
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