
2264-5. Toyota Safety Sense C
PRIUS c_U
WARNING
■To avoid malfunction of the front sensor
Observe the following precautions.
Otherwise, the front sensor may not operate properly, possibly  leading to an
accident resulting in death or serious injury.
● Keep the windshield clean at all times. If the windshield is di rty or covered
with  an  oily  film,  water  droplets,  snow,  etc.,  clear  the  windshield.  If  the
inner side of the windshield in front of the front sensor is dirty, contact your
Toyota dealer.
● If there is a large difference in temperature between the inside and outside
of the vehicle, such as in winter, the windshield is likely to  fog up easily. If
the  part  of  the  windshield  in  front  of  the  front  sensor  is  fogg ed  up  or  cov-
ered  with  condensation  or  ice,  the  PCS  warning  light  may  illumi nate  and
the  system  may  be  temporarily  disabled.  In  this  case,  use  the  w indshield
defogger to remove the fog, etc. ( P. 376)
● If  the  area  of  the  windshield  in  front  of  the  front  sensor  is  covered  with
water droplets, use the windshield wipers to remove them. 
If  the  water  droplets  are  not  sufficiently  removed,  the  performance  of  the
front sensor may be reduced.
●Do  not attach objects,  such as  stickers,
transparent  stickers,  etc.,  and  so  forth,
to  the  outer  side  of  the  windshield  in
front of the front sensor (shaded area in
the illustration).
A:  From  the  top  of  the  windshield  to
approximately 4.0 in. (10 cm) below the
bottom of the front sensor
B:  Approximately  7.9  in.  (20  cm)
(Approximately  4.0  in.  (10  cm)  to  the
right and left from the center of the front
sensor)
● Do  not  install  or  attach  anything  to  the
inner  side  of  the  windshield  under  the
front sensor (shaded area in the illustra-
tion).
A: Approximately  4.0  in.  (10  cm)  (Start-
ing from the bottom of the front sensor)
B:  Approximately  7.9  in.  (20  cm)
(Approximately  4.0  in.  (10  cm)  to  the
right and left from the center of the front
sensor) 

4157-3. Do-it-yourself maintenance
7
Maintenance and care
PRIUS c_U
Washer fluid (P. 428)
• Water  or  washer  fluid  containing  antifreeze
(for winter use)
• Funnel (used only for adding water or washer
fluid)
WARNING
The  engine  compartment  contains  many  mechanisms  and  fluids  that  may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions:
■ When working on the engine compartment
● Vehicles without a smart key system: Make sure that the power s witch is in
the “LOCK” position and the “READY” indicator is off.
Vehicles  with  a  smart  key  system:  Make  sure  that  the  indicator  on  the
power switch and the “READY” indicator are both off.
● Keep  hands,  clothing  and  tools  away  from  the  moving  fan  and  eng ine
drive belt.
● Be  careful  not  to  touch  the  engine,  power  control  unit,  radiator,  exhaust
manifold,  etc.  right  after  driving  as  they  may  be  hot.  Oil  and  other  fluids
may also be hot.
● Do not leave anything that may burn easily, such as paper and r ags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes
are flammable.
■ When working near the electric  cooling fan or radiator grille
Vehicles  without  a  smart  key  system:  The  electric  cooling  fan  m ay  keep
rotating  for  about  3  minutes  even  after  the  power  switch  is  tur ned  to  the
“LOCK” position.
With  the  power  switch  in  the  “ON”  position,  the  electric  coolin g  fan  may
automatically start to run if the air conditioning is on and/or the coolant tem-
perature  is  high.  Be  sure  the  power  switch  is  in  the  “LOCK”  position  when
working near the electric cooling fan or radiator grille.
Vehicles  with  a  smart  key  system: The  electric  cooling  fan  may  keep  rotat-
ing for about 3 minutes even after the power switch is off.
With  the  power  switch  in  ON  mode,  the  electric  cooling  fan  may  automati-
cally start to run if the air conditioning is on and/or the coolant temperature
is high. Be sure the power switch is off when working near the  electric cool-
ing fan or radiator grille.
ItemsCheck points 

4217-3. Do-it-yourself maintenance
7
Maintenance and care
PRIUS c_U
With the engine at operating temperature and turned off, check the oil
level on the dipstick.
■Checking the engine oil
Park  the  vehicle  on  level  ground.  After  warming  up  the  engine
and  turning  off  the  hybrid  system,  wait  more  than  5  minutes  for
the oil to drain back into the bottom of the engine.
Holding  a  rag  under  the  end,
pull the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding  a  rag  under  the  end,  pull  the  dipstick  out  and  check  th e
oil level.
Low
Normal
Excessive
The  shape  of  the  dipstick
may  differ  depending  on  the
type of vehicle or engine.
Wipe the dipstick and reinsert it fully.
Engine oil
1
2
3
4
5
1
2
3
6 

5379-1. Specifications
9
Vehicle specifications
PRIUS c_U
*: The engine oil  capacity is a reference  quantity to be  used when changing
the  engine  oil.  Warm  up  the  engine  and  turn  off  the  hybrid  system,  wait
more than 5 minutes, and check the oil level on the dipstick.
■
Engine oil selection
“Toyota  Genuine  Motor  Oil”  is  used  in  your  Toyota  vehicle.  Use
Toyota approved “Toyota Genuine Motor Oil” or equivalent to sat isfy
the following grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Recommended viscosity: SAE 0W-20
SAE  0W-20  is  the  best  choice
for  good  fuel  economy  and
good starting in cold weather.
If  SAE  0W-20  is  not  available,
SAE  5W-20  oil  may  be  used.
However,  it  must  be  replaced
with  SAE  0W-20  at  the  next  oil
change.
Hybrid battery (traction battery)
Type Nickel-metal hydride battery
Voltage7.2 V/module
Capacity 6.5 Ah (3HR)
Quantity20 modules
Overall voltage 144 V
Lubrication system
Oil  capacity  (Drain  and
refill reference
*)
With filter
Without filter 3.9 qt. (3.7 L, 3.3 Imp. qt.)
3.6 qt. (3.4 L, 3.0 Imp. qt.)
Outside temperature 

5389-1. Specifications
PRIUS c_U
Oil viscosity (0W-20 is explained here as an example):
• The  0W  in  0W-20  indicates  the  characteristic  of  the  oil  which allows cold startability. Oils wi th a lower value before the W allow
for easier starting of the engine in cold weather.
• The  20  in  0W-20  indicates  the  vi scosity  characteristic  of  the oil
when the oil is at high temperature. An oil with a higher visco sity
(one  with  a  higher  value)  may  be  better  suited  if  the  vehicle  i s
operated at high speeds, or un der extreme load conditions.
How to read oil container label:
The  International  Lubricant
Specification  Advisory  Commit-
tee  (ILSAC)  Certification  Mark
is added to  some oil  containers
to  help  you  select  the  oil  you
should use.
Cooling system
Capacity Gasoline engine
Power control unit 5.6 qt. (5.3 L, 4.7 Imp. qt.)
1.7 qt. (1.6 L, 1.4 Imp. qt.)
Coolant type Use either of the following:
• “Toyota Super Long Life Coolant” 
• A  similar  high-quality  ethylene  glycol-
based  non-silicate,  non-amine,  non-
nitrite,  and  non-borate  coolant  with  long-
life hybrid organic acid technology
Do not use plain water alone. 

591Alphabetical index
PRIUS c_U
MaintenanceDo-it-yourself 
maintenance ....................... 414
Emission inspection and  maintenance (I/M) 
programs ............................ 413
General maintenance ........... 410
Maintenance data ................. 534
Maintenance requirements ... 407
Meter Instrument panel light 
control................................... 99
Meters ..................................... 97
Microphone .............................. 331
Mirrors
Inside rear view mirror .......... 158
Outside rear view mirror defogger ............................. 376
Outside rear view mirrors...... 159
Vanity mirrors........................ 391
Moon roof ................................. 165
MP3 disc ................................... 298
Multi-information display ........ 101
Navigation system
*
Noise from under vehicle............ 8 Odometer ................................... 98
Oil
Engine oil .............................. 537
Opener Back door ............................. 134
Fuel filler door ....................... 219
Hood ..................................... 417
Outside rear view mirrors
Adjusting and folding ............ 159
Defogger ............................... 376
Outside temperature 
display...................................... 99
Overheating, Hybrid  system.................................... 526
Parking brake........................... 205
Parking lights Replacing light bulbs ............ 458
Switch ................................... 206
Wattage ................................ 542
PCS (Pre-Collision system) .... 229 PCS (Pre-Collision 
system) switch...... .............. 232
Warning light......................... 479
Personal lights Switch ................................... 384
Wattage ................................ 542
Power outlet ............................. 392
Power switch ................... 186, 190
Power windows ....................... 161
Pre-Collision system (PCS) .... 229 PCS (Pre-Collision 
system) switch...... .............. 232
Warning light......................... 479
M
N
O
P
*: For vehicles with a navigation system, refer to the “NAVIGATION SYSTEM OWNER'S MANUAL”.