2008 TOYOTA PRIUS Engine compartment

TABLE OF CONTENTSIndex
4
PRIUS_U_(L/O_0802)
Using the AUX adapter ...... 268
Using the steering switches ........................... 269
3-4. Using the hands-free system ............................. 272
Hands-free system (for cellular phone) ................. 272
Using the Bluetooth
®
phone ............................... 277
Setting the hands-free system .............................. 291
3-5. Using the interior lights ... 318 Interior lights list ................. 318
3-6. Using the storage features ........................... 322
List of storage features....... 322
3-7. Other interior features ..... 329 Sun visors .......................... 329
Vanity mirror ....................... 330
Clock .................................. 331
Power outlet ....................... 332
Armrest............................... 334
Floor mats .......................... 335
Luggage compartment features ............................ 336
Garage door opener ........... 339 4-1. Maintenance and care ...... 346
Cleaning and protecting the vehicle’s exterior ............... 346
Cleaning and protecting the vehicle’s interior ................ 348
4-2. Maintenance ...................... 351 Maintenance requirements .................... 351
General maintenance ......... 353
Emission inspection and maintenance (I/M)
programs .......................... 356
4-3. Do-it-yourself maintenance ................... 357
Do-it-yourself service precautions ....................... 357
Hood ................................... 361
Positioning a floor jack........ 362
Engine compartment .......... 364
Tires.................................... 379
Tire inflation pressure ......... 388
Wheels................................ 392
Air conditioning filter ........... 394
Key battery ......................... 396
Checking and replacing fuses ................................. 398
Light bulbs .......................... 407
4Maintenance and care

25
1-1. Hybrid system
1
Before driving
PRIUS_U_(L/O_0802)
■
Sounds and vibrations specific to a hybrid vehicle
There may be no engine sounds or vibration even though the vehicle is able
to move. Always put the shift lever in “P” when parked.
The following sounds or vibrations may occur when the hybrid system is
operating, and are not a malfunction.
● Motor sounds may be heard from the engine compartment.
● Sounds may be heard from the hybrid battery (traction battery) behind
the rear seat when the hybrid system starts or stops.
● Sounds from the hybrid system may be heard when the back door lid is
open.
● Sounds may be heard from the transmission when the hybrid system
starts or stops.
● Engine sounds may be heard when accelerating sharply.
● Sounds may be heard from the regenerative brake when you press the
brake pedal.
● Vibration may be felt when the gasoline engine starts or stops.
● You may hear cooling fan sounds coming from the air intake vents behind
the rear seat.
■ Maintenance, repair, recycling, and disposal
Contact your Toyota dealer regarding maintenance, repair, recycling and dis-
posal. Do not dispose of the vehicle yourself.

134 2-1. Driving procedures
PRIUS_U_(L/O_0802)
■If the hybrid system does not start
The hybrid system immobilizer system may not have been deactivated.
(P. 81)
■ If the “READY” light does not come on
If the “READY” light does not come on when you press the power switch with
the shift lever in “P” and the brake pedal pressed, contact your Toyota dealer
immediately.
■ When the “POWER” switch in dicator flashes in amber
The system may be malfunctioning. Have the vehicle inspected by your Toy-
ota dealer immediately.
■ Auto power OFF function
The “POWER” switch will automatically turn OFF when left in ACCESSORY
mode for 1 hour or more.
■ Electronic key battery depletion
 P. 4 4
■ When the electronic key battery is discharged
 P. 396
■ Conditions affecting operation
 P. 4 2
■ Leak detection pump
Several hours after the engine is turned off, you may hear a sound coming
from underneath the luggage compartment for several minutes.
This is normal operation and does not indicate a malfunction.

Maintenance and care4
345
PRIUS_U_(L/O_0802)
4-1. Maintenance and care ............................... 346
Cleaning and protecting the vehicle’s exterior ............ 346
Cleaning and protecting the vehicle’s interior ............. 348
4-2. Maintenance ................... 351 Maintenance requirements .................. 351
General maintenance....... 353
Emission inspection and maintenance (I/M)
programs ........................ 356
4-3. Do-it-yourself maintenance ................. 357
Do-it-yourself service precautions .................... 357
Hood ................................ 361
Positioning a floor jack ..... 362
Engine compartment ........ 364
Tires ................................. 379
Tire inflation pressure ...... 388
Wheels ............................. 392
Air conditioning filter......... 394
Key battery ....................... 396
Checking and replacing fuses .............................. 398
Light bulbs........................ 407

353
4-2. Maintenance
4
Maintenance and care
PRIUS_U_(L/O_0802)
General maintenance
Engine compartment
Luggage compartment
ItemsCheck points
Brake fluid • At the correct level? ( P. 373)
Engine/power control unit coolant • At the correct level? ( P. 371)
Engine oil • At the correct level? ( P. 365)
Exhaust system • No fumes or strange sounds?
Radiator/condenser/hoses • Not blocked with foreign matter?
(P. 373)
Washer fluid • At the correct level? (P. 378)
ItemsCheck points
12 volt battery • Maintenance-free (P. 375)
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 Supp lement”. It is recommended that
any problem you notice should be brought to the attention of your
Toyota dealer or qualified service shop for advice.

359
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U_(L/O_0802)
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.
■
When working on the engine compartment:
● Keep hands, clothing, and tools away from the moving fan and engine
drive belt.
● Be careful not to touch the engine, inverter, 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 or the 12 volt
battery. Fuel and 12 volt battery fumes are flammable.
● Be extremely cautious when working on the 12 volt battery. It contains poi-
sonous and corrosive sulfuric acid.
● 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” light on, the engine
may suddenly start in some cases. When you inspect the engine compart-
ment, 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. 373)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.

365
4-3. Do-it-yourself maintenance
4
Maintenance and care
PRIUS_U_(L/O_0802)
Engine compartment cover
■ Removing the cover
Front
■ Installing the clips
Push up center portion
Insert
Press
Engine oil
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 turning off the hybrid
system, wait a few minutes for the oil to drain back into the
bottom of the engine.
STEP1

398
4-3. Do-it-yourself maintenance
PRIUS_U_(L/O_0802)
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
Turn the “POWER” switch to OFF mode.
Remove the engine compartment cover if necessary.
P. 365
Open the fuse box cover.
Engine compartment
Push the tabs in and lift the lid
off.
Driver’s side instrument panel Remove the lid.STEP1
STEP2
STEP3