2011 TOYOTA PRIUS steering

ADVANCED PARKING GUIDANCE SYSTEM
235
(b) When the presupport function is
not in use
1. Move your vehicle slowly to a posi-
tion perpendicular to the parking
space, and as close as possible to the
parking space.
Positioning the vehicle perpendicular to
the parking space allows the angle of the
parking position to be identified easily.
2. Move your vehicle to a position
where you can see the center of the
parking space right besides you.
To facilitate the setting of the target parking
position, the front side sensors detect the
vehicles parked at the left and right of the
parking space and identify the target park-
ing position.
It is possible to identify the target parking
position even if there is only a vehicle
parked on one side of the parking space.
If no vehicle or small vehicles are parked
on both sides of the desired parking space,
stop with the steering wheel straight.
By stopping the vehicle here, you can
mostly identify the parking location, mak-
ing it easier to set the target parking posi-
tion.
Make sure the steering wheel is straight
when you stop. If not, the parking location
cannot be identified.
If you do not stop in front of the parking
space, the system will refer to the angle of
the vehicle relative to the target parking
space, and display the target parking posi-
tion (green or red frame) in the position
used last time the parking assist mode was
activated.

ADVANCED PARKING GUIDANCE SYSTEM
236
3. Position your vehicle so that you
can enter the parking space, then stop
the vehicle with the steering wheel
straight.
To enter the target parking space more ac-
curately, position your vehicle with a larger
heading angle.
4. Shift to “R”.
5. Touch on the screen.
6. Use the arrow to align the green
frame with the desired parking space,
then touch “OK”.
You can also move the green frame by
touching the screen (area other than the
arrow).
There are tricks to align the green frame.
See “  Tips for setting the target parking
position” on page 240.
Areas in which you are unable to park are
displayed in red.
If the frame is displayed in red, you cannot
use the parking assist mode to park in that
location. See “ When a red frame is dis-
played in the assist mode” on page 246.
When the green frame is displayed, if you
begin backing up without touching “OK”,
the message “Parking position has not
been set.” appears. If you continue to back
up, you will hear a warning tone and the
system will be disabled.
If the frame is red, there will be no guidance
even if you begin backing up.
If the orientation of the frame is opposite to
that of the target parking space, touch
.

ADVANCED PARKING GUIDANCE SYSTEM
238
If the red area which denotes an
area unsuitable for parking over-
laps 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 park-
ing. Progress to a position where
the parking space lines do not
overlap with such an area.
7. Position yourself as you would
when backing up normally, and rest
your hands on the steering wheel with-
out 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 can-
celed.
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 green frame displayed on the screen
is approximately the same size as your ve-
hicle. (The green frame displayed when
setting the target parking position is the
size of a normal parking space.)

ADVANCED PARKING GUIDANCE SYSTEM
240
8. Once the vehicle is mostly within
the target parking position, voice guid-
ance will give a message, and parking
assist mode will finish.
For safety, voice guidance is given slightly
before the target parking position. Further-
more, at that point system control will fin-
ish, so grip the steering wheel firmly, and
finish parking in the desired position, using
the brake to control the vehicle’s speed.
Check in front and behind the vehicle visu-
ally and check with the mirrors while back-
ing up.
Tips for setting the target parking
position
Useful information for setting the target
parking position (green frame)
THE DISPLAY POSITION OF THE
GREEN FRAME
The system decides the initial positioning
of the green frame by the position of the
parking space detected by the front side
sensors or the position of the vehicle when
it stops, and by detecting the white lines of
the parking space in the camera image to
identify the parking space location.
The front side sensors identify the parking
space location and the white lines near
that location are detected.
The front side sensors cannot identify the
parking space location, or the parking
space location may be misaligned in the
following situations.
A vehicle is parked at the back of the
parking space or the sensors cannot
detect a parked vehicle due to vehicle
shape etc.
The sensors cannot detect a pole or
wall beside the parking space.
The sensors detect a pedestrian or ob-
ject near the parking space.
If there are no vehicles parked on either
side of the target parking space when your
vehicle stops, the approximate parking
space location is identified, and the white
lines in that location are detected. For this
reason, stopping in front of the parking
space will make the detection of target
parking space’s white lines easier.
Successful detection of the parking
space’s white lines may not be possible,
depending on the shape of the line.

ADVANCED PARKING GUIDANCE SYSTEM
243
MessageCauseWhat to do
! Parking position cannot be
set.Not in an area where sys-
tem use is possible.Change the vehicle’s posi-
tion, referring to the help
function.
! Check APGS system.
Have your vehicle checked
by a dealer.There is a malfunction in
the system.Have your vehicle checked
by your Toyota dealer.
! Use on flat surface.The vehicle has rolled
forward on a sloped
road.
The vehicle does not
move even if you take
your foot off the brake
pedal.
Do not attempt to use the
system in those sorts of
conditions.
! System cannot guide un-
der current conditions.If the message is displayed
only when the system is op-
erating, it is likely that the
tires are worn, or tire infla-
tion pressure is low.Check tires for wear and
pressure.
If the message is displayed
constantly, there is most
likely a malfunction.Turn the “POWER” switch
to OFF, then to ON mode.
If the message is still
displayed, have the vehicle
checked by your Toyota
dealer.
The vehicle has skidded or
the tires have been locked.Do not attempt to use the
system on a slippery road
such as snowy road.
! APGS not available now.The system has temporari-
ly overheated.Turn the “POWER” switch
to OFF, then to ON mode.
Wait a few moments before
use.
There is a malfunction in
the voice guidance system.Have your vehicle checked
by your Toyota dealer.
The hybrid system has not
been started.Turn the “POWER” switch
to ON mode and start the
hybrid system. If the mes-
sage is still displayed, have
the vehicle checked by
your Toyota dealer.
! Release parking brake.The parking brake has
been applied.Release the parking brake.
! Too much force applied to
the steering wheel.You are exerting too much
pressure on the steering
wheel.Loosen your grip on the
steering wheel.
— What to do when this sort of message is displayed

ADVANCED PARKING GUIDANCE SYSTEM
244
MessageCauseWhat to do
Steering position is not
straight. Turn the steering
wheel to LEFT (or RIGHT).The steering wheel is not
straight.Straighten the steering
wheel.
Steer to left (or right) until
the frame becomes green.It is possible to begin to
park if you turn the steering
wheel in the direction indi-
cated.Turn the steering wheel in
the direction indicated until
the frame turns green (the
message “Too much force
applied to the steering
wheel” is displayed). Turn
the wheel slightly more
than necessary to over-
come tire resistance. Once
you have turned the steer-
ing wheel, you can no lon-
ger change the target park-
ing position. Be sure to
align the frame before turn-
ing the steering wheel.
! Parking position has not
been set.You have begun to back up
without touching “OK”.Stop the vehicle and touch
“OK”.
! Speed is too fast.The speed at which you are
backing up is too fast.Back up at a speed that
does not cause the warning
chime to sound, using the
brake pedal. The system
will be disabled if you back
up too quickly.
! Guidance canceled by
user operation.You have turned the steer-
ing wheel or depressed the
accelerator pedal during
the assist mode.The system has been dis-
abled, so restart from the
beginning.
! Accelerator pedal has
been depressed.You have depressed the
accelerator pedal when
setting the target parking
position.Do not depress the acceler-
ator pedal.
! Guidance unavailable.Some sort of malfunction
has occurred within the
system.Have the vehicle checked
by your Toyota dealer.
! System not ready.−Take your vehicle to your
Toyota dealer.
! Clean Park Sonar.In extreme cold weather or
foreign matter gets on the
sensors.Have the vehicle checked
by your Toyota dealer.

ADVANCED PARKING GUIDANCE SYSTEM
245
Message and voice guidance
In the parallel parking assist mode and parking assist mode, voice guida\
nce accompa-
nies the following messages displayed during parking position setting an\
d steering
wheel control. (Voice guidance may not be given depending on the reason the message
was displayed.)
Message
Voice Guidance (Warning tone)
During settingDuring steering wheelcontrol
! Check APGS system. Have your
vehicle checked by a dealer.(One chime)
(Two beeps) The guid-
ance has been can-
celed.
! System cannot guide under cur-
rent conditions.−
(Two beeps) The guid-
ance has been can-
celed.
! APGS not available now.(One chime)
(Two beeps) The guid-
ance has been can-
celed.
! Release parking brake.(One chime)
(Two beeps) The guid-
ance has been can-
celed.
! Parking position has not been set.(One chime)−
! Speed is too fast.−
(Several beeps and
then two beeps) The
guidance has been
canceled.
! Guidance canceled by user op-
eration.−
(Two beeps) The guid-
ance has been can-
celed.
For the adjustment of the volume, ask your Toyota dealer.

ADVANCED PARKING GUIDANCE SYSTEM
246

When a red frame is displayed in the
assist mode
If the frame turns red and the message
“Adjust the frame to the target.” is dis-
played while setting the target parking
position, you cannot use the assist mode.
In this situation, move the target parking
position, or move the position of the ve-
hicle.
The frame may be displayed in red, de-
pending on the location and angle of the
vehicle when “R” is selected.
Furthermore, even if the frame is displayed
in green, if you move the frame to a loca-
tion unsuitable for parking using the assist
mode, the frame will change to red.
When in the parking assist mode, if the
message “Steer to left (right) until the
frame becomes green.” is displayed, you
may use the assist mode by turning the
steering wheel. 1. Align
the frame with the target park-
ing position.
2. While stopped, turn the wheel to the
left (right) until the frame turns green
and “Too much force applied to the
steering wheel.” is displayed.
Turn the wheel slightly more than neces-
sary to overcome tire resistance.
If you turn the wheel too far, the direction
of turn displayed on the screen will re-
verse.
3. Touch “OK”.
Once you have turned the steering wheel,
you can no longer change the target park-
ing position. Be sure to align the frame be-
fore turning the steering wheel.