sensor TOYOTA PRIUS PLUS 2012 Owner's Guide

310 2-4. Using other driving systems
PRIUS +_OM_OM47821E_(EE)
Conditions that may trigger the system even if there is no possibility of
a collision
When there is an object by the roadside at the entrance to a curve
When passing an oncoming vehicle on a curve
When driving over a narrow iron bridge
When there is a metal object on the road surface
When driving on an uneven road surface (nose up, nose down)
When passing an oncoming vehicle on a left-turn (left-hand drive vehi-
cles) or right-turn (right-hand drive vehicles)
When your vehicle rapidly closes on the vehicle in front
When a grade separation/interchange, sign, billboard, or other structure
appears to be directly in the vehicle’s line of travel
When the steep angle of the road causes a metal object located beneath
the road surface to be seen ahead of the vehicle
When an extreme change in vehicle height occurs
When the axis of the radar is out of adjustment
When passing through certain toll gates
When passing through an overpass
When the system is activated in the situations described above, there is also
a possibility that the seat belts will retract quickly and the brakes will be
applied with a force greater than normal. When the seat belt is locked in the
retracted position, stop the vehicle in a safe place, release the seat belt and
refasten it.
Obstacles not detected
The sensor cannot detect plastic obstacles such as traffic cones. There may
also be occasions when the sensor cannot detect pedestrians, animals,
bicycles, motorcycles, trees, or snowdrifts.

311 2-4. Using other driving systems
2
When driving
PRIUS +_OM_OM47821E_(EE)
Situations in which the pre-crash safety system does not function
properly
The system may not function effectively in situations such as the following:
On roads with sharp bends or uneven surfaces
If a vehicle suddenly moves in front of your vehicle, such as at an inter-
section
If a vehicle suddenly cuts in front of your vehicle, such as when overtak-
ing
In inclement weather such as heavy rain, fog, snow or sand storms
When your vehicle is skidding with the VSC system off
When an extreme change in vehicle height occurs
When the axis of the radar is out of adjustment
Automatic cancelation of the pre-crash safety system
When a malfunction occurs due to sensor contamination, etc. that results in
the sensors being unable to detect obstacles, the pre-crash safety system
will be automatically disabled. In this case, the system will not activate even
if there is a collision possibility.
When there is a malfunction in the system, or if the system is tempo-
rarily unusable
Warning lights will turn on or flash. (P. 472, 476)

315 2-4. Using other driving systems
2
When driving
PRIUS +_OM_OM47821E_(EE)
CAUTION
When the sensor may not be correctly detecting the vehicle ahead
Apply the brakes as necessary in any of the following situations.
When water or snow thrown up by the surrounding vehicles hinders the
functioning of the sensor
When your vehicle is pointing upwards (caused by a heavy load in the lug-
gage compartment etc.)
Vehicles that cut in suddenly
Vehicles with small rear ends (trailers with no load on board etc.)
Motorcycles traveling in the same lane
Handling the radar sensor
Observe the following to ensure the pre-crash safety system can function
effectively:
Keep the sensor and grille cover clean at all times.
Clean the sensor and grille cover with a soft cloth so you do not mark or
damage them.
Do not subject the sensor or surrounding area to a strong impact.
If the sensor moves even slightly off position, the system may become
inaccurate or malfunction. If the sensor or surrounding area is subject to a
strong impact, always have the area inspected and adjusted by any autho-
rized Toyota dealer or repairer, or another duly qualified and equipped pro-
fessional.
Do not disassemble the sensor.
Do not attach accessories or stickers to the sensor, grille cover or sur-
rounding area.
Do not modify or paint the sensor and grille cover.

384 4-1. Maintenance and care
PRIUS +_OM_OM47821E_(EE)
CAUTION
When washing the vehicle
Do not apply water to the inside of the engine compartment. Doing so may
cause the electrical components etc. to catch fire.
Precautions regarding the exhaust pipe
Exhaust gasses cause the exhaust pipe to become quite hot.
When washing the vehicle, be careful not to touch the pipe until it has cooled
sufficiently, as touching a hot exhaust pipe can cause burns.
When cleaning the windshield
When the upper part of the windshield where the raindrop sensor is
located is touched by hand
When a wet rag or similar is held close to the raindrop sensor
If something bumps against the windshield
If you directly touch the raindrop sensor body or if something bumps into
the raindrop sensor
Set the wiper switch to off.
If the wiper switch is in “AUTO”, the wip-
ers may operate unexpectedly in the fol-
lowing situations, and may result in hands
being caught or other serious injuries and
cause damage to the wiper blades.
OFF

441 4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS +_OM_OM47821E_(EE)
FUSEAmpereCircuit
14 STOP 10AStop lights, high mounted stop-
light, brake system, driver support
system
15 P FR DOOR 25A Power windows
16 D FR DOOR 25A Power windows
17 DOOR RR 25A Power windows
18 DOOR RL 25A Power windows
19 S/ROOF 30A Panoramic roof shades
20 ECU-IG NO.1 10AElectric cooling fans, multiplex
communication system
21 ECU-IG NO.2 10ADriver support system, Pre-crash
safety System, inside rear view
mirror, yaw rate & G sensor, brake
system, electric power steering,
navigation system, panoramic roof
shades, seat belt pretensioners,
audio system, emergency flash-
ers, turn signal lights, windshield
wipers, headlight cleaner
22 GAUGE 10AHeadlight leveling system, seat
belt reminder light, gauges and
meters
23 A/C 10A Air conditioning system
24 WASHER 15A Windshield washer
25 RR WIP 20A Rear window wiper and washer

476 5-2. Steps to take in an emergency
PRIUS +_OM_OM47821E_(EE)
Warning lightWarning light/DetailsCorrection procedure

(Only outer
frame flashes)Low hybrid battery (traction
battery) warning light (warning
buzzer)
Hybrid battery (traction battery)
level becomes low because the
shift position is in N for long
timeBecause recharging
is not possible when
the shift position is in
N, shift the shift posi-
tion to P when park-
ing the vehicle for a
long time.

(Turns on)
(If equipped)Pre-crash safety system warn-
ing light
Indicates that the PCS is not
currently functional because
the grille or the radar sensor is
dirty, or the system has over-
heated.• Check the grille and
the sensor and clean
them if they are dirty.
• In case of overheat-
ing, the system will
become functional
once the system
cools down.
Open door warning light
(warning buzzer)
*1
Indicates that a door is not fully
closedCheck that all the
doors are closed.
Low fuel level warning light
Indicates remaining fuel is
approximately 6.0 L (1.6 gal.,
1.3 Imp.gal.) or lessRefuel the vehicle.

556 6-2. Customization
PRIUS +_OM_OM47821E_(EE)
ItemFunctionDefault
settingCustom-
ized
setting
Smart entry
& start sys-
tem
(P. 64) and
wireless
remote
control
(P. 92)Operation
signals (Emer-
gency flashers)ON OFF – O O
Time elapsed
before auto-
matic door lock
function is acti-
vated if door is
not opened after
being unlocked30 seconds60 seconds
––O
120
seconds
Open door
reminder buzzer
(When locking
the vehicle)ON OFF – – O
Adjust the vol-
ume of buzzer
soundsLevel 7Level 1 to 6
OOO
OFF
Alarm
(P. 150)Deactivates the
alarm when the
doors are
unlocked using
the mechanical
keyOFF ON – – O
Automatic
light control
system
(P. 261)Light sensor
sensitivityLevel 3Levels 1 to
5OOO

558 6-2. Customization
PRIUS +_OM_OM47821E_(EE)
ItemFunctionDefault set-
tingCustom-
ized
setting
Meter and
instrument
panel
(P. 236)Sensor sensitiv-
ity for darkening
the brightness of
the meter, navi-
gation system
and instrument
panel depend-
ing on the out-
side brightness0 -2 to +2 – – O
Sensor sensitiv-
ity for returning
the brightness of
the meter, navi-
gation system
and instrument
panel to the orig-
inal level
depending on
the outside
brightness0 -2 to +2 – – O