sensor TOYOTA PRIUS PLUG-IN 2014 Owner's Manual
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341
2-4. Using other driving systems
PRIUS PHV_OM_OM47856U_(U)
2
When driving
■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. 
■Situations in which the pre-collision 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-collision system
When a malfunction occurs due to sensor contamination, etc. that results in
the sensors being unable to detect obstacles, the pre-collision 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 and/or warning messages will turn on or flash. (→P.   5 3 8 ,   5 5 0 ) 
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2-4. Using other driving systems
PRIUS PHV_OM_OM47856U_(U)
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.)
●Ve h i c l e s   t h a t   c u t   i n   s u d d e n l y
●Ve h i c l e s   w i t h   s m a l l   r e a r   e n d s   ( t r a i l e r s   w i t h   n o   l o a d   o n   b o a r d   e t c . )
●Motorcycles traveling in the same lane
■Handling the radar sensor
Observe the following to ensure the pre-collision system can function effec-
tively:
●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 your Toy-
ota dealer.
●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. 
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4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47856U_(U)
FUSEAmpereCircuit
14 STOP 10A
Stop lights, high mounted stop-
light, brake system, driver support 
system, vehicle proximity notifica-
tion 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 No circuit
20 ECU-IG NO.1 10A
Electric cooling fans, multiplex 
communication system, vehicle 
proximity notification system
21 ECU-IG NO.2 10A
Driver support system, Pre-Colli-
sion System, inside rear view mir-
ror, garage door opener, yaw rate 
& G sensor, brake system, naviga-
tion system, tire pressure warning 
system, seat belt pretensioners, 
audio system, emergency flash-
ers, turn signal lights, windshield 
wipers, headlight cleaner
22 GAUGE 10AHeadlight leveling system, gauges 
and meters
23 A/C 10AAir conditioning system, Remote 
Air Conditioning System
24 WASHER 15A Windshield washer 
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4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47856U_(U)
4
Maintenance and care
FUSEAmpereCircuit
25 RR WIP 20A Rear window wiper and washer
26 WIP 30A Windshield wipers
27 MET 7.5A Gauges and meters
28 IGN 10A
Brake system, driver support sys-
tem, multiport fuel injection sys-
tem/sequential multiport fuel 
injection system, SRS airbag sys-
tem, front passenger occupant 
classification system (ECU and 
sensors), power management sys-
tem, smart key system, front pas-
senger’s seat belt reminder light
29 PANEL 10A
Air conditioning system, personal 
light, transmission, P position 
switch, navigation system, Remote 
Air Conditioning System, headlight 
cleaner, front passenger’s seat 
belt reminder light, headlight level-
ing system, glove box light, clock, 
audio system, MPH or km/h switch
30 TAIL 10A
Headlight leveling system, park-
ing lights, tail lights, license plate 
lights, front fog lights, side marker 
lights 
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When trouble arises
541
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47856U_(U)
*1:Open door warning buzzer:
The  open  door  warning  buzzer  sounds  to  alert  one  or  more  of  the  doors  is
not fully closed (with the vehicle having reached a speed of 3 mph [5 km/h]).
*2:Seat belt warning buzzer:
The  driver’s  and  front  passenger’s  seat  belts  reminder  sounds  to  alert  the
driver  and  front  passenger  that  his  or  her  seat  belt  is  not  fastened.  The
buzzer sounds intermittently for 10 seconds after the vehicle has reached a
speed of at least 12 mph (20 km/h). Then, if the seat belt is still unfastened,
the buzzer will sound in a different tone for 20 more seconds.
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front), side impact sensors (rear), driver’s seat
position  sensor,  driver’s  seat  belt  buckle  switch,  front  passenger  occupant
classification system (ECU and sensors), “AIR BAG ON” indicator light, “AIR
BAG OFF” indicator light, front passenger’s seat belt buckle switch, seat belt
pretensioner  assemblies,  airbags,  interconnecting  wiring  and  power
sources. (→P.   1 8 7 )
■Front  passenger  occupant  classification  system  (ECU  and  sensors),
seat belt reminder and warning buzzer
●If  luggage  is  placed  on  the  front  passenger  seat,  the  front  passenger
occupant classification system (ECU and sensors) may cause the warn-
ing light to flash and the warning buzzer to sound even if a passenger is
not sitting in the seat.
●If a cushion is placed on the seat, the front passenger occupant classifi-
cation  system  (ECU  and  sensors)  may  not  detect  a  passenger,  and  the
warning light may not operate properly. 
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When trouble arises
553
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47856U_(U)
Warning messageDetailsCorrection 
procedure
(If equipped)
•Indicates that the pre-collision 
system is not currently func-
tional because the grille or the 
sensor is dirty.
•This message also appears 
when the pre-collision system 
is not functional due to over-
heating.
•Check the grille 
and the sensor and 
clean them if they 
are dirty. 
•In case of over-
heating, the system 
will become func-
tional once the sys-
tem cools down.
(Flashes)
(If equipped)
Indicates that the radar cruise 
control sensor is dirty or cov-
ered with ice.
Clean the sensor.
(Flashes)
(If equipped)
Indicates that the radar cruise 
control system is unable to 
judge vehicle-to-vehicle dis-
tance.
If the windshield 
wipers are on, turn 
them off or set 
them to either the 
intermittent or the 
slow mode. 
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6-2. Customization
PRIUS PHV_OM_OM47856U_(U)
*:This function cannot be customized for vehicles sold in Canada.
ItemFunctionDefault set-
ting
Custom-
ized
setting
Door lock
(→P.   1 3 8 ,  
594)
Unlocking using 
a key
Driver’s 
door 
unlocked in 
1-step, all 
doors 
unlocked in 
2-step
All doors 
unlocked in 
1-step
–OO
Speed-detecting 
automatic door 
lock function
OFF ON O O O
Shifting the shift 
position to any 
position other 
than P locks all 
doors
ON OFF O O O
Shifting the shift 
position to P 
unlocks all doors
ON OFF O O O
Opening driver’s 
door unlocks all 
doors
OFF ON – O O
Automatic 
light control 
system 
(→P.   2 9 4 )
Light sensor 
sensitivityLevel 3Levels 1 to 
5OOO
Time elapsed 
before head-
lights automati-
cally turn off after 
doors are closed
30 seconds
0 seconds
OOO60 seconds
90 seconds
Daytime running 
lights*ON OFF O O O 
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6-2. Customization
PRIUS PHV_OM_OM47856U_(U)
ItemFunctionDefault set-
ting
Custom-
ized
setting
Meter and 
instrument 
panel
(→P.   2 5 9 )
Sensor sensitiv-
ity for darkening 
the brightness of 
the meter, navi-
gation system 
and instrument 
panel depend-
ing on the out-
side brightness
0 -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 
brightness
0 -2 to +2 – – O
Automatic 
air 
conditioning 
system 
(→P.   3 6 0 )
Enable/disable 
automatic 
operation of the 
air conditioning 
compressor 
when the 
“AUTO” switch 
ON
ON OFF – O O
Heating/cooling 
operation mini-
mized in Eco 
drive mode
ON OFF – – O 
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Alphabetical index
PRIUS PHV_OM_OM47856U_(U)
Switch
Audio remote control switches*
Cruise control switch ............ 310
Driving mode select
switch ................................. 249
Eco drive mode switch ......... 249
Emergency flasher switch .... 526
EV/HV mode selection 
switch ................................... 37
Fog light switch..................... 300
Fuel filler door opener 
switch ................................. 178
Hazard light switch ............... 526
Headlight cleaner switch ...... 309
Ignition switch ....................... 240
Light switches ....................... 294
Power door lock switch......... 138
“POWER” switch .................. 240
Power window switch ........... 175
Pre-collision braking off 
switch ................................. 338
Talk switch*
Telephone switch*
Window lock switch .............. 175
Wipers and washer switch.... 302
Tail lights
Switch....................................294
Talk switch*
Telephone switch*
Theft deterrent system
Immobilizer system ...............183
Tire inflation pressure .............489
Tire information
Glossary ................................635
Size .......................................631
Tire identification number ......630
Uniform Tire Quality 
Grading ...............................633
Tires
Chains ...................................353
Checking ...............................479
If you have a flat tire ..............569
Inflation pressure...................489
Inflation pressure sensor .......480
Information ............................629
Replacing ..............................451
Rotating tires .........................479
Size .......................................623
Snow tires .............................351
Tire pressure warning 
system ........................479, 540
T
*:Refer to “DISPLAY AUDIO SYSTEM OWNER’S MANUAL” 
or “NAVIGATION SYSTEM OWNER’S MANUAL”.