warning TOYOTA PRIUS 2014 3.G Manual Online

516 5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
Warning messageDetails
(Flashes)
(If equipped) Indicates a malfunction in the pre-collision system.
A buzzer also sounds.
(Flashes)
(If equipped) Indicates a malfunction in the radar cruise control sys-
tem.
A buzzer also sounds.
Press the “ON-OFF” button once to deactivate the
system, and then press the button again to reacti-
vate the system.
(Flashes)
(If equipped) Indicates a malfunction in the LKA.
A buzzer also sounds.

5
When trouble arises
517
5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
Follow the correction procedures.
After taking the specified steps to correct the suspected problem,
check that the warning message turns off.
*: Refer to the separate “Scheduled Maintenance Guide” or “Owner’s Manual Supplement” for the maintenance interval applicable to your vehicle.
Warning messageDetailsCorrection procedure
(U.S.A. only) Indicates that all maintenance
according to the driven dis-
tance on the maintenance
schedule
* should be per-
formed soon. If necessary, per-
form maintenance.
Comes on approximately 4500
miles (7200 km) after the main-
tenance data has been reset.
(U.S.A. only) Indicates that all maintenance
is required to correspond to
the driven distance on the
maintenance schedule
*.
Perform the neces-
sary maintenance.
Please reset the
maintenance data
after the mainte-
nance is per-
formed. (
P. 409)
Comes on approximately 5000
miles (8000 km) after the main-
tenance data has been reset.
(The indicator will not work
properly unless the mainte-
nance data has been reset.)

518 5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(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.

5
When trouble arises
519
5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
Warning messageDetailsCorrection
procedure
(Flashes
rapidly)
(If equipped) Indicates that there is a high
possibility of a frontal 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.

520 5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
Warning messageDetailsCorrection procedure
(If equipped) Indicates that the LKA (Lane-
Keeping Assist) is suspended
• The camera sensor tempera-
ture is higher than the opera-
tion temperature range.
• The power steering system operation is restricted. Restart the LKA
after driving for a
while.
Alerts the driver that the vehi-
cle is out of the lanes (while
the LKA [Lane-Keeping Assist]
system is operating). The warning buzzer sounds
continuously. The lane mark-
ings and/or the steering
wheel marking flash.
At the same time,
will appear on the
head-up display (the image
flashes). Check around the
vehicle and back to
inside of the lane
markings.
Indicates that the LKA (Lane-
Keeping Assist) system
detects nohanded driving
(while the lane keeping assist
function is operating). The warning buzzer sounds
twice. Grip the steering
wheel firmly.
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. 556)

5
When trouble arises
521
5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(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.
(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.

522 5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
Warning messageDetailsCorrection procedure
(Flashes) Pressed the P position switch
while the vehicle is running.
The shift position automati-
cally changed to N. To shift the shift
position to P, stop
the vehicle com-
pletely and press
the P position
switch.
(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 drive mode cannot be
switched to. A buzzer also sounds.
The reason why EV drive
mode cannot be used is
shown (may not be shown in
some instances.) Use the EV drive
mode when it
becomes available.
(Flashes
3times) EV drive mode has been auto-
matically canceled.
A buzzer also sounds.
The reason why EV drive
mode cannot be used is
shown (may not be shown in
some instances.) Drive normally for a
short time.

5
When trouble arises
523
5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(U)
■
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.
■ The LKA (Lane-Keeping Assist) lane departure warning function (if
equipped)
In the following cases, the warning message will not be displayed even if a
lane line is crossed.
● When the vehicle speed deviates from the operating range of the LKA
system functions
● When the lane lines cannot be recognized
● When the steering wheel is turned as far as necessary to cause the vehi-
cle to change lanes

524 5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(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
525
5-2. Steps to take in an emergency
PRIUS_OM_OM47857U_DVD_(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.