2013 TOYOTA PRIUS PLUG-IN HYBRID if a warning message

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.

552 5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
Warning messageDetailsCorrection procedure
(Flashes
rapidly)
(If equipped) Indicates that there is a high
risk of a collision, or that the
pre-collision braking function is
operating.
A buzzer also sounds.
At the same time,
will appear on the head-up
display (the image flashes). Slow the vehicle by
applying the
brakes.
(If equipped, flashes) Indicates that your vehicle is
nearing the vehicle ahead (in
radar cruise mode).
A buzzer also sounds.
At the same time,
will appear on the head-up
display (the image flashes). Slow the vehicle by
applying the
brakes.
The hybrid system has over-
heated. A buzzer also sounds.
This message may be dis-
played when driving under
severe operating conditions.
(For example, when driving
up a long steep hill.) Stop and check.
(
P. 600)

5
When trouble arises
553
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
Warning messageDetailsCorrection
procedure
(Flashes) The hybrid battery (traction
battery) is low.
A buzzer also sounds. When stopping the
vehicle for a long
period of time, shift
the shift position to
P. The hybrid bat-
tery (traction bat-
tery) cannot be
charged with the
shift position in N.
(Flashes) The hybrid battery (traction
battery) power has dropped
because a long period of time
has elapsed after shifting the
shift position to N.
A buzzer also sounds. Restart the hybrid
system when start-
ing the vehicle.
(Flashes) The transmission is out of P
when attempting to start the
hybrid system.
Shift the shift posi-
tion to P before
pressing the
“POWER” switch.
(Flashes) The driver’s door is opened
when the shift position is in N,
D or B with the hybrid system
on.
Shift the shift posi-
tion to P.

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.

5
When trouble arises
555
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
Warning messageDetailsCorrection
procedure
The fuel filler door has been
left open. Tighten the fuel
tank cap and close
the fuel filler door.
The charging port lid is open. Close the charging
port lid.
■ Warning message in radar cruise mode (if equipped)
In the following cases, the warning message may not be displayed even if
vehicle-to-vehicle distance decreases:
● When your vehicle and the vehicle ahead are traveling at the same
speed or the vehicle ahead is traveling more quickly than your vehicle.
● When the vehicle ahead is traveling at very low speed.
● Immediately after cruise control speed is set.
● At the instant the accelerator pedal is depressed.

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 buzzerExterior 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.

5
When trouble arises
557
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
Interior
buzzerExterior buzzerWarning messageDetailsCorrection procedure
Once 3 times (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 in P. Turn the
“POWER”
switch to
OFF or
confirm
the loca-
tion of the
electronic
key.
Contin-
uous 
(Flashes)The driver’s
door has been
opened with the
shift position in
a position other
than P and with-
out first turning
the “POWER”
switch is OFF.
Shift the
shift posi-
tion to P.

558 5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47787U_(U)
InteriorbuzzerExterior buzzerWarning messageDetailsCorrection procedure
Once Contin-
uous
(Displayed alternately)(Flashes) The electronic
key has been
taken outside
the vehicle and
the doors have
been locked
without first
turning the
“POWER”
switch to OFF.
(vehicles with
entry function)
Turn the
“POWER”
switch to
OFF and
lock the
doors
again.