2013 TOYOTA PRIUS PLUG-IN ECO mode

441
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47787U_(U)
4
Maintenance and care
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 cooling 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. 4 6 6 )
■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.

473
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47787U_(U)
4
Maintenance and care
■After charging/reconnecting the 12-volt battery
●Unlocking the doors using the smart key system may not be possible
immediately after reconnecting the 12-volt battery. If this happens, use
the wireless remote control or the mechanical key to lock/unlock the
doors.
●Start the hybrid system with the “POW ER” swi tc h in ACC ESSORY mode.
The hybrid system may not start with the “POWER” switch turned off.
However, the hybrid system will operate normally from the second
attempt.
●The “POWER” switch mode is recorded by the vehicle. If the 12-volt bat-
tery is reconnected, the vehicle will return the “POWER” switch mode to
the status it was in before the 12-volt battery was disconnected. Make
sure to turn off the power before disconnect the 12-volt battery. Take
extra care when connecting the 12-volt battery if the “POWER” switch
mode prior to discharge is unknown.
●Restart the hybrid system, depress the brake pedal, and confirm that it is
possible to shift into each shift position.
If the system will not start even after multiple attempts at all methods above,
contact your Toyota dealer.

484
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47787U_(U)
CAUTION
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train as well as
dangerous handling characteristics, which may lead to an accident
resulting in death or serious injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Toyota.
●Do not mix differently constructed tires (radial, bias-belted or bias-ply
tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.
■When initializing the tire pressure warning system
Do not operate the tire pressure warning reset switch without first adjust-
ing the tire inflation pressure to the specified level. Otherwise, the tire
pressure warning light may not come on even if the tire inflation pressure
is low, or it may come on when the tire inflation pressure is actually nor-
mal.

542
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
■If the tire pressure warning light frequently comes on after blinking
for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1
minute when the “POWER” switch is turned to ON mode, have it
checked by your Toyota dealer.
■Customization
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features →P. 6 3 9 ) H o w e v e r , To y o t a r e c o m m e n d s t h a t t h e
seat belt reminder buzzer be operational to alert the driver and front passen-
ger when seat belts are not fastened.
CAUTION
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Toyota
dealer. The vehicle will become extremely unstable during braking, and the
ABS system may fail, which could cause an accident resulting in death or
serious injury.
■When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold
firmly and operate using more force than usual.

5
When trouble arises
551
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
Warning messageDetailsCorrection
procedure
(If equipped)
•Indicates that the pre-collision
system is not currently func-
tional because the grille or the
sensor is dirty.
•This message also appears
when the pre-collision system
is not functional due to over-
heating.
•Check the grille
and the sensor and
clean them if they
are dirty.
•In case of over-
heating, the system
will become func-
tional once the sys-
tem cools down.
(Flashes)
(If equipped)
Indicates that the radar cruise
control sensor is dirty or cov-
ered with ice.
Clean the sensor.
(Flashes)
(If equipped)
Indicates that the radar cruise
control system is unable to
judge vehicle-to-vehicle dis-
tance.
If the windshield
wipers are on, turn
them off or set
them to either the
intermittent or the
slow mode.

554
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
*1:For EV mode operating conditions, see P. 40.
*2:If EV mode has been canceled because of insufficient hybrid battery (trac-
tion battery) charge, a warning message will not be shown on the multi-
information display and the buzzer will not sound.
Warning messageDetailsCorrection
procedure
(Flashes)
Indicates that the accelerator
pedal is depressed while the
shift position is in N.
A buzzer also sounds.
Release the accel-
erator pedal and
shift the shift posi-
tion to D or R.
(Flashes)
The accelerator pedal is
depressed to stop the vehicle
on an upward slope etc.
A buzzer also sounds.
If this continues, the hybrid
system may overheat.
Release the accel-
erator pedal and
depress the brake
pedal.
EV mode cannot be switched
to.*1
A buzzer also sounds.
The reason why EV mode
cannot be used is shown
(may not be shown in some
instances.)
Use the EV mode
when it becomes
available.
*2
(Flashes
3 times)
EV mode has been automati-
cally canceled.*1
A buzzer also sounds.*2
The reason why EV mode
cannot be used is shown.
Use EV mode after
making it avail-
able, for example
by lowering the set
temperature of the
heater.

556
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
Have the malfunction repaired immediately.
After taking the specified steps to correct the suspected problem,
check that the warning message and light turn off.
Interior
buzzer
Exterior
buzzerWarning messageDetailsCorrection
procedure
Once⎯
(Comes on for 15 seconds.)
(Flashes)
The electronic
key is not
detected when
attempting to
start the hybrid
system.
Confirm
the loca-
tion of the
electronic
key.
Once 3 times
(Flashes)
An open door
other than the
driver’s door is
closed while the
electronic key is
outside the
detection range
and the
“POWER”
switch is in
ACCESSORY
or ON mode.
Confirm
the loca-
tion of the
electronic
key.

560
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
Interior
buzzer
Exterior
buzzerWarning messageDetailsCorrection
procedure
Contin-
uous
Contin-
uous
(Displayed alternately)
(Flashes)
The driver’s
door is opened
and closed
while the elec-
tronic key is out-
side the
detection range
and the
“POWER”
switch is in
ACCESSORY
or ON mode
with the shift
position not in P.
•Shift the
shift posi-
tion to P.
•Confirm
the loca-
tion of the
electronic
key.
Once⎯
(Comes on for 15 seconds.)
The electronic
key battery is
low.
Replace
the bat-
tery.
(→P. 4 9 3 )
Once⎯
(Flashes)
An open door
has been
closed and the
“POWER”
switch has been
turned twice to
the ACCES-
SORY mode
from OFF.
Press the
“POWER”
switch
while
applying
the
brakes.