2012 TOYOTA PRIUS PLUG-IN Owners Manual

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4-2. Maintenance
PRIUS PHV_OM_OM47818U_(U)
4
Maintenance and care
CAUTION
■If your vehicle is not properly maintained
Improper maintenance could result in serious damage to the vehicle and
possible serious injury or death.
■Handling of the 12-volt battery
●Engine exhaust, some of its constituents, and a wide variety of automobile
components contain or emit chemicals known to the State of California to
cause cancer and birth defects and other reproductive harm. Work in a
well ventilated area.
●Oils, fuels and fluids contained in vehicles as well as waste produced by
component wear contain or emit chemicals known to the State of Califor-
nia to cause cancer and birth defects or other reproductive harm. Avoid
exposure and wash any affected area immediately.
●12-volt battery posts, terminals and related accessories contain lead and
lead compounds which are known to cause brain damage. Wash your
hands after handling. (→P. 4 7 1 )

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4-2. Maintenance
PRIUS PHV_OM_OM47818U_(U)
General maintenance
Engine compartment
ItemsCheck points
Brake fluidIs the brake fluid at the correct
level? (→P. 4 6 7 )
Engine/power control unit coolant
Is the engine/power control unit
coolant at the correct level?
(→P. 4 6 4 )
Engine oilIs the engine oil at the correct
level? (→P. 4 6 0 )
Exhaust systemThere should not be any fumes or
strange sounds.
Radiator/condenser
The radiator and condenser
should be free from foreign
objects. (→P. 4 6 6 )
Washer fluidIs there sufficient washer fluid?
(→P. 4 6 9 )
Listed below are the general maintenance items that should be per-
formed at the intervals specified in the “Owner’s Warranty Informa-
tion Booklet” or “Owner’s Manual Supplement/Scheduled
Maintenance Guide”. It is recommended that any problem you notice
should be brought to the attention of your Toyota dealer or qualified
service shop for advice.

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4-2. Maintenance
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4
Maintenance and care
Luggage compartment
Ve h i c l e i n t e r i o r
ItemsCheck points
12-volt battery Check the connections. (→P. 4 7 1 )
ItemsCheck points
Accelerator pedal
•The accelerator pedal should
move smoothly (without uneven
pedal effort or catching).
Hybrid transmission “Park” mech-
anism
•When parked on a slope and the
shift position is in P, is the vehicle
securely stopped?
Brake pedal
•Does the brake pedal move
smoothly?
•Does the brake pedal have appro-
priate clearance from the floor?
(→P. 6 1 9 )
•Does the brake pedal have the
correct amount of free play?
(→P. 6 1 9 )
Brakes
•The vehicle should not pull to one
side when the brakes are applied.
•The brakes should work effec-
tively.
•The brake pedal should not feel
spongy.
•The brake pedal should not get
too close to the floor when the
brakes are applied.

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4-2. Maintenance
PRIUS PHV_OM_OM47818U_(U)
Head restraints•Do the head restraints move
smoothly and lock securely?
Indicators/buzzers•Do the indicators and buzzers
function properly?
Lights • Do all the lights come on?
Parking brake
•Does the parking brake pedal
move smoothly?
•When parked on a slope and the
parking brake is on, is the vehicle
securely stopped?
Seat belts
• Do the seat belts operate
smoothly?
•The seat belts should not be dam-
aged.
Seats•Do the seat controls operate
properly?
Steering wheel
•Does the steering wheel rotate
smoothly?
•Does the steering wheel have the
correct amount of free play?
•There should not be any strange
sounds coming from the steering
wheel.
ItemsCheck points

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4-2. Maintenance
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Maintenance and care
Ve h i c l e e x t e r i o r
Charging equipment
ItemsCheck points
Doors • Do the doors operate smoothly?
Engine hood•Does the engine hood lock sys-
tem work properly?
Fluid leaks
•There should not be any signs of
fluid leakage after the vehicle has
been parked.
Tires
•Is the tire inflation pressure cor-
rect?
•The tires should not be dam-
aged or excessively worn.
•Have the tires been rotated
according to the maintenance
schedule?
•The wheel nuts should not be
loose.
ItemsCheck points
Charging cable
•Check that the electrical leakage
detection function operates prop-
erly. (→P. 1 0 3 )
CAUTION
■If the hybrid system is operating
Turn the hybrid system off and ensure that there is adequate ventilation
before performing maintenance checks.

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4-2. Maintenance
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Emission inspection and maintenance (I/M) programs
Some states have vehicle emission inspection programs which
include OBD (On Board Diagnostics) checks. The OBD system moni-
tors the operation of the emission control system.
■If the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere
in the emission control system. Yo u r v e h i c l e m a y n o t p a s s t h e I /
M test and may need to be repaired. Contact your Toyota dealer
to service the vehicle.
■Yo u r v e h i c l e m a y n o t pa s s t h e I / M t e s t i n t h e f o l l o w i n g s i t u a -
tions:
●When the 12-volt battery is disconnected or discharged
Readiness codes that are set during ordinary driving are
erased.
Also, depending on your driving habits, the readiness codes
may not be completely set.
●When the fuel tank cap is loose
The malfunction indicator lamp comes on indicating a tempo-
rary malfunction and your vehicle may not pass the I/M test.
■When the malfunction indicator lamp still remains on after
several driving trips
The error code in the OBD system will not be cleared unless the
vehicle is driven 40 or more times.
■If your vehicle does not pass the I/M test
Contact your Toyota dealer to prepare the vehicle for re-testing.

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Maintenance and care
4-3. Do-it-yourself maintenance
Do-it-yourself ser vice precautions
If you perform maintenance by yourself, be sure to follow the correct
procedure as given in these sections.
ItemsParts and tools
12-volt battery condition
(→P. 4 7 1 )
•Grease
•Conventional wrench
(for terminal clamp bolts)
Brake fluid level (→P. 4 6 7 )
•FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
•Rag or paper towel
•Funnel (used only for adding
brake fluid)
Engine/power control unit coolant
level (→P. 4 6 4 )
•“Toyota Super Long Life Coolant”
or a similar high quality ethylene
glycol-based non-silicate, non-
amine, non-nitrite and non-borate
coolant with long-life hybrid
organic acid technology
For the U.S.A.:
“Toyota Super Long Life Cool-
ant” is pre-mixed with 50% cool-
ant and 50% deionized water.
For Canada:
“Toyota Super Long Life Cool-
ant” is pre-mixed with 55% cool-
ant and 45% deionized water.
•Funnel (used only for adding cool-
ant)

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4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
ItemsParts and tools
Engine oil level (→P. 4 6 0 )
•“Toyota Genuine Motor Oil” or
equivalent
•Rag or paper towel
•Funnel (used only for adding
engine oil)
Fuses (→P. 4 9 5 )•Fuse with same amperage rating
as original
Light bulbs (→P. 5 0 7 )
•Bulb with same number and watt-
age rating as original
• Phillips-head screwdriver
•Flathead screwdriver
•Wrench
Radiator and condenser
(→P. 4 6 6 )⎯
Tire inflation pressure (→P. 4 8 6 )•Tire pressure gauge
•Compressed air source
Washer fluid (→P. 4 6 9 )
•Water or washer fluid containing
antifreeze (for winter use)
•Funnel (used only for adding
water or washer fluid)