2012 TOYOTA PRIUS Owners Manual

409
4-2. Maintenance
4
Maintenance and care
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 th e emission control system.
■If the malfunction indicator lamp comes on
The OBD system determines that a problem exists somewhere
in the emission control system. Your vehicle may not pass the I/
M test and may need to be repaired. Contact your Toyota dealer
to service the vehicle.
■ Your vehicle may not pass the I/M test in the following situa-
tions:
●When the 12-volt battery is disconnected or discharged
Readiness codes that are se t 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 vehi cle 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.

410
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. 431)• Grease
• Conventional wrench
(for terminal clamp bolts)
Brake fluid level ( P. 427)
• 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. 424)
• “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)

411
4-3. Do-it-yourself maintenance
4
Maintenance and care
ItemsParts and tools
Engine oil level (
P. 420)
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (P. 456)• Fuse with same amperage rating
as original
Light bulbs (P. 467)
• Bulb with same number and watt-
age rating as original
• Phillips-head screwdriver
• Flathead screwdriver
• Wrench
Radiator and condenser
(P. 426)
Tire inflation pressure ( P. 447)• Tire pressure gauge
• Compressed air source
Washer fluid ( P. 429)
• Water or washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

412 4-3. Do-it-yourself maintenance
CAUTION
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
●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.
● 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 rags, 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 c ooling fans or radiator grille
Be sure the “POWER” switch is off.
With the “POWER” switch in ON mode, the electric cooling fans may auto-
matically start to run if the air conditioning is on and/or the coolant tempera-
ture is high. ( P. 426)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air. Also, a backfire could cause a fire in the engine com-
partment.

413
4-3. Do-it-yourself maintenance
4
Maintenance and care
Hood
Release the lock from the inside of the vehicle to open the hood.
Pull the hood lock release
lever.
The hood will pop up slightly.
Pull up the auxiliary catch
lever and lift the hood.
STEP 1
STEP 2

414 4-3. Do-it-yourself maintenance
CAUTION
■Pre-driving check
Check that the hood is fully closed and locked.
If the hood is not locked properly, it may open while the vehicle is in motion
and cause an accident, which may result in death or serious injury.
■ After installing the support rod into the slot
Make sure the rod supports the hood securely from falling down on to your
head or body.
Hold the hood open by insert-
ing the supporting rod into
either of the slots.
Use the forward slot to open
the hood normally, or use the
rearward slot when the hood
needs to be opened wide.
STEP 3

415
4-3. Do-it-yourself maintenance
4
Maintenance and care
NOTICE
■
When closing the hood
Be sure to return the support rod to its clip before closing the hood. Closing
the hood without returning the support rod properly could cause the hood to
bend.

416
4-3. Do-it-yourself maintenance
Positioning a floor jack
When raising your vehicle with a floor jack, position the jack cor-
rectly. Improper placement (such as under rear suspension etc.) may
damage your vehicle or cause injury.
■Front
■ Rear
ITO43P106