2015 TOYOTA PRIUS display

524 5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_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.
(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.

5
When trouble arises
525
5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
Warning messageDetailsCorrection
procedure
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. This message may be dis-
played when driving under
severe operating conditions,
and the output of the hybrid
system may temporarily
decrease in order to protect
the system. (For example,
when driving up a long steep
hill or driving up a steep hill in
reverse.) Stop and check.
(
P. 561)

528 5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_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

5
When trouble arises
529
5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
Other displayed messages
Carrying out the corresponding action turns the message off.
Displayed messageDetailsCorrection procedure
Maintenance of the hybrid sys-
tem (traction battery) cooling
component is required The filter may be clogged, the
air vent may be blocked or
there may be a gap in the
duct. Have maintenance
performed on the
hybrid system
(traction battery)
cooling component
at your Toyota
dealer.
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.

530 5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
Have the malfunction repaired immediately.If any of the following warnings is displayed when a hybrid system
start operation is performed, perform the appropriate action accord-
ing to the warning message display.
Warning messageDetailsCorrection procedure
Indicates an insufficient 12-volt
battery charge. A buzzer also sounds.
• The parking lock mechanism may not function.
• The hybrid system may not be able to start.
• It may not be possible to turn the “POWER” switch off.
If this happens, applying the
parking brake will enable the
switch to be turned off. When parking, park
the vehicle on a flat
surface and apply
the parking brake
securely.
Charge or replace
the 12-volt battery.
After charging the
12-volt battery, the
message may con-
tinue to be dis-
played until the
shift position is
changed from P.

5
When trouble arises
533
5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
Interior
buzzerExterior 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.

5
When trouble arises
535
5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
Interior
buzzerExterior 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. 464)
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.

536 5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
InteriorbuzzerExterior buzzerWarning messageDetailsCorrection procedure
Once 
(Flashes)The elec-
tronic key
does not
operate
properly.
P. 553
 Power
was
turned off
due to
the auto-
matic
power off
function.Next time when
starting the
hybrid system,
operate the
hybrid system
for approxi-
mately 5 minutes
to recharge the
12-volt battery.
NOTICE
■
While the engine oil level warning is displayed
Continued engine operation with low engine oil will damage the engine.
■ Engine oil maintenance message
The warning message is based on the projected driving range after engine
oil maintenance message is reset.
The system does not monitor the purity of the engine oil.