2010 TOYOTA PRIUS engine

400 3-6. Other interior features
PRIUS_U (OM47668U) U.S.A.
Safety information for Safety ConnectImportant! Read this information before using Safety Connect.
■ Exposure to radio frequency signals
The Safety Connect system installed in your vehicle is a low-power
radio transmitter and receiver. It receives and also sends out radio
frequency (RF) signals.
In August 1996, the Federal Communications Commission (FCC)
adopted RF exposure guidelines with safety levels for mobile wire-
less phones. Those guidelines are consistent with the safety stan-
dards previously set by the following U.S. and international
standards bodies.
● ANSI (American National Stand ards Institute) C95.1 [1992]
● NCRP (National Council on Ra diation Protection and Measure-
ment) Report 86 [1986]
● ICNIRP (International Commiss ion on Non-Ionizing Radiation
Protection) [1996]
Those standards were based on comprehensive and periodic eval-
uations of the relevant scientific literature. Over 120 scientists,
engineers, and physicians from universities, and government
health agencies and industries reviewed the available body of
research to develop the ANSI Standard (C95.1).
The design of Safety Connect complies with the FCC guidelines in
addition to those standards.

Maintenance and care4
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PRIUS_U (OM47668U) U.S.A.
4-1. Maintenance and careCleaning and protecting 
the vehicle’s exterior ...... 404
Cleaning and protecting 
the vehicle’s interior ....... 407
4-2. Maintenance Maintenance 
requirements .................. 410
General maintenance....... 412
Emission inspection and 
maintenance (I/M) 
programs ........................ 415
4-3. Do-it-yourself maintenance Do-it-yourself service 
precautions .................... 416
Hood ................................ 420
Positioning a floor jack ..... 423
Engine compartment ........ 425
12 volt battery .................. 436
Tires ................................. 441
Tire inflation pressure ...... 451
Wheels ............................. 455
Air conditioning filter......... 457
Electronic key battery....... 460
Checking and replacing 
fuses .............................. 462
Light bulbs........................ 472

411
4-2. Maintenance
4
Maintenance and care
PRIUS_U (OM47668U) U.S.A.
■
Allow inspection and repairs to be performed by a Toyota dealer
● Toyota technicians are well-trained specialists and are kept up to date
with the latest service information. They are well informed about the
operations of all systems on your vehicle.
● Keep a copy of the repair order. It proves that the maintenance that has
been performed is under warranty coverage. If any problem should arise
while your vehicle is under warranty, your Toyota dealer will promptly
take care of it.
CAUTION
■Warning in handling of 12 volt battery, oils, fuels, and fluids
● 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. 436)
● Used engine oil contains chemicals that have been shown to cause cancer
in laboratory animals. Avoid prolonged and repeated contact. Always pro-
tect your skin by washing thoroughly with soap and water.

412
4-2. Maintenance
PRIUS_U (OM47668U) U.S.A.
General maintenance
Engine compartment
Luggage compartment
ItemsCheck points
Brake fluid • At the correct level? (P. 432)
Engine/power control unit coolant • At the correct level? ( P. 430)
Engine oil • At the correct level? (P. 426)
Exhaust system • No fumes or strange sounds?
Radiator/condenser/hoses • Not blocked with foreign matter?

( P. 432)
Washer fluid • At the correct level? (P. 434)
ItemsCheck points
12 volt battery • Maintenance-free ( P. 436)
Listed below are the general maintenance items that should be per-
formed at the intervals specified in the “Scheduled Maintenance
Guide” or “Owner’s Manual Supple ment”. It is recommended that
any problem you notice should be brought to the attention of your
Toyota dealer or qualified service shop for advice.
Listed below are the general maintenance items that should be per-
formed at the intervals specified in the “Owner’s Warranty Informa-
tion”. It is recommended that an y problem you notice should be
brought to the attention of your Toyota dealer or qualified service
shop for advice.

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PRIUS_U (OM47668U) U.S.A.
4-3. Do-it-yourself maintenance
Do-it-yourself ser vice precautions
If you perform maintenance yourself, be sure to follow the correct
procedure given in these sections.
ItemsParts and tools
12 volt battery condition (P. 436)• Grease
• Conventional wrench 
(for terminal clamp bolts)
Engine/power control unit coolant
level 
(P. 430)
• “Toyota Super Long Life Coolant”
or 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
4
Maintenance and care
PRIUS_U (OM47668U) U.S.A.
ItemsParts and tools
Brake fluid level (
P. 432)
• FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine oil level ( P. 426)
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses (P. 462)• Fuse with same amperage rating
as original
Radiator and condenser (P. 432)
Tire inflation pressure ( P. 451)• Tire pressure gauge
• Compressed air source
Washer fluid (P. 434)
• Water or washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding washer fluid)

418 4-3. Do-it-yourself maintenance
PRIUS_U (OM47668U) U.S.A.
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
● 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 or rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes
are flammable.
● Never touch, disassemble, remove or replace the high voltage parts,
cables and their connectors. It can cause severe burns or electric shock
that may result in death or serious injury.
● When the hybrid system is operating with the “READY” indicator on, the
engine may suddenly start in some cases. When you inspect the engine
compartment, be sure to turn off the hybrid system.
■ When working near the electric cooling fan or radiator grille
Be sure the “POWER” switch is OFF. 
With the “POWER” switch in ON mode, the electric cooling fan may automat-
ically start to run if the air conditioning is on and/or the coolant temperature
is high. ( P. 432)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.

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4-3. Do-it-yourself maintenance
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Maintenance and care
PRIUS_U (OM47668U) U.S.A.
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 compart-
ment.