Page 251 of 621
250
PRIUS v_OM_OM47887U_(U)
4-5. Using the driving support systems
WARNING
■Replacing tires
Make sure that all tires are of the specified size and of the same brand,
tread pattern and total load capacity. In addition, make sure that the tires are
inflated to the recommended tire inflation pressure level.
The ABS, VSC and TRAC systems will not function correctly if different tires
are installed on the vehicle.
Contact your Toyota dealer for further information when replacing tires or
wheels.
■ Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect
the driving assist systems, and may cause a system to malfunction.
Page 258 of 621

PRIUS v_OM_OM47887U_(U)
2574-5. Using the driving support systems
4
Driving
WARNING
■Cautions regarding the assi st contents of the system
By means of alarms and brake control, the pre-collision system is intended
to assist the driver in avoiding collisions through the process of LOOK-
JUDGE-ACT. There are limits to the degree of assistance the system can
provide, so please keep in mind the following important points.
● Assisting the driver in watching the road
The pre-collision system is only able to detect obstacles directly in front of
the vehicle, and only within a limited range. It is not a mechanism that
allows careless or inattentive driving, and it is not a system that can assist
the driver in low-visibility conditions. It is still necessary for the driver to
pay close attention to the vehicle’s surroundings.
● Assisting the driver in making correct judgement
When attempting to estimate the possibility of a collision, the only data
available to the pre-collision system is that from obstacles it has detected
directly in front of the vehicle. Therefore, it is absolutely necessary for the
driver to remain vigilant and to determine whether or not there is a possi-
bility of collision in any given situation.
● Assisting the driver in taking action
The pre-collision system’s braking assist feature is designed to help
reduce the severity of a collision, and so only acts when the system has
judged that a collision is unavoidable. This system by itself, without the
proper operations of the driver, is not capable of automatically avoiding a
collision or bringing the vehicle to a stop safely. For this reason, when
encountering a dangerous situation the driver must take direct and imme-
diate action in order to ensure the safety of all involved.
Page 322 of 621
321
PRIUS v_OM_OM47887U_(U)
5-9. Bluetooth® phone
5
Audio system
Using a Bluetooth® Phone
To display the screen shown below, press the switch on the steer-
ing wheel or the button.
Several functions are available to operate on each screen that is dis-
played by selecting the 4 tabs.
Device name
Bluetooth
® connection status
The hands-free system is a function that allows you to use your
cellular phone without touching it.
This system supports Bluetooth
®. Bluetooth® is a wireless data
system that allows the cellular phone to wirelessly connect to
the hands-free system and make/receive calls.
Before making a phone call, check the connection status, battery
charge, call area and signal strength. ( P. 323)
If a Bluetooth
® device cannot be connected, check the connection
status on the phone screen. If th e device is not connected, either
register or reconnect it. ( P. 315)
Phone screen
1
2
Page 434 of 621
PRIUS v_OM_OM47887U_(U)
4337-3. Do-it-yourself maintenance
7
Maintenance and care
Remove the reservoir cap.
Add brake fluid slowly while checking the fluid level.
Make sure to check the fluid ty pe and prepare the necessary item.
■Brake fluid can absorb moisture from the air
Excess moisture in the brake fluid can cause a dangerous loss of braking effi-
ciency. Use only newly opened brake fluid.
3
4
Fluid type FMVSS No.116 DOT 3 or SAE J1703 brake fluid
ItemsClean funnel
Page 462 of 621
461
PRIUS v_OM_OM47887U_(U)
7-3. Do-it-yourself maintenance
7
Maintenance and care
Checking and replacing fuses
Turn the power switch off.
Open the fuse box cover.
Remove the fuse.
Only type A fuse can be
removed using the pullout tool.
If any of the electrical components do not operate, a fuse may
have blown. If this happens, check and replace the fuses as nec-
essary.
1
2
Engine compartmentLeft side instrument panel
Push the tab in and lift the lid
off.
When closing, first hook the lid
onto the two rear tabs.
Remove the lid.
3
Page 467 of 621
466
PRIUS v_OM_OM47887U_(U)
7-3. Do-it-yourself maintenance
■Headlight low beams (halogen headlights)Unplug the bulb base coun-
terclockwise.
Unplug the connector while
pressing the lock release.
Replace the light bulb, and
install the bulb base.
Align the 3 tabs on the light bulb
with the mounting, and insert.
Turn and secure the bulb
base.
Shake the bulb base gently to
check that it is not loose, turn
the headlight low beams on
once and visually confirm that
no light is leaking through the
mounting.
Replacing light bulbs
1
2
3
4
Page 469 of 621
468
PRIUS v_OM_OM47887U_(U)
7-3. Do-it-yourself maintenance
Replace the light bulb, and
set the connector.
Install the bulb base.
Align the 3 tabs on the light bulb
with the mounting, and insert.
Turn the bulb base clockwise to
set.
Shake the bulb base gently to
check that it is not loose, turn
the headlight high beams on
once and visually confirm that
no light is leaking through the
mounting.
Install the cover and turn it
clockwise.
Align the of the cover to the
positioning mark of the light unit
and insert and turn it.
There is the positioning mark on
the outer side of the light unit.
5
6
7
Page 473 of 621
472
PRIUS v_OM_OM47887U_(U)
7-3. Do-it-yourself maintenance
Set the new light bulb.
Align the 3 tabs on the light bulb
with the mounting, and insert. Turn
it clockwise to set.
Set the connector.
After installing the connector,
shake the bulb base gently to
check that it is not loose, turn the
fog lights on once and visually con-
firm that no light is leaking through
the mounting.
Reinstall the fender liner bolts.
4
5
6