2017 TOYOTA PRIUS PLUG-IN HYBRID warning

6458-2. Steps to take in an emergency
PRIUS PHV_OM_OM47A89E_(EE)
8
When trouble arises
Driver’s and front passenger’s seat belt reminder light
(warning buzzer)*4
Warns the driver and/or front passenger to fasten their
seat belts
 Fasten the seat belt.
If the front passenger’s seat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (warning buzzer) turn off.
Rear passengers’ seat belt reminder light (warning
buzzer)*4
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.
Master warning light
A buzzer sounds and the warning light comes on and
flashes to indicate that the master warning system has
detected a malfunction.
 P. 650
Tire pressure warning light
When the light comes on:
Low tire inflation pressure such as
• Natural causes ( P. 648)
• Flat tire ( P. 658)
 Adjust the tire inflation pressure to the specified
level.
The light will turn off after a few minutes. In case the
light does not turn off even if the tire inflation pres-
sure is adjusted, have the system checked by any
authorized Toyota dealer or repairer, or another duly
qualified and equipped professional.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system ( P. 648)
 Have the system checked by any authorized Toyota
dealer or repairer, or another duly qualified and
equipped professional.
Warning lightWarning light/Details/Actions

6468-2. Steps to take in an emergency
PRIUS PHV_OM_OM47A89E_(EE)
Brake Override System/Drive-Start Control/
Intelligent Clearance Sonar (symbol display)*5
Indicates that:
• The Brake Override System is operating;
• The Brake Override System is malfunctioning;
• The Drive-Start Control is operating;
• The Drive-Start Control is malfunctioning; or
• The Intelligent Clearance Sonar (if equipped) is operat-
ing ( P. 449)
 Follow the instruction that are displayed on the multi-
information display.
LDA (Lane Departure Alert with steering control) system
(symbol display)*5
Indicates that the LDA (Lane Departure Alert with steering
control) system has determined that the driver does not
have their hands on the steering wheel while the steering
control function is on
 Firmly hold the steering wheel.
LDA (Lane Departure Alert with steering control) system
(symbol display)*5
Indicates that the vehicle has been about to depart from its
lane many times, or the steering wheel is suddenly oper-
ated to avoid departing from the lane.
 Immediately take a break if you feel tired while driv-
ing.
Warning lightWarning light/Details/Actions

6478-2. Steps to take in an emergency
PRIUS PHV_OM_OM47A89E_(EE)
8
When trouble arises
*1: Brake system warning buzzer:
When there is a possible problem that could affect braking performance,
the warning light will come on and a warning buzzer will sound.
*2: Low engine oil pressure warning buzzer:
A buzzer also sounds continuously for approximately 30 seconds at maxi-
mum in addition to the low engine oil pressure warning light when the
“READY” indicator is illuminated.
*3: Open door warning buzzer:
The open door warning buzzer sounds to alert one or more of the doors is
not fully closed (with the vehicle having reached a speed of 5 km/h
[3 mph]).
*4: Seat belt warning buzzer:
The seat belt warning buzzer sounds to alert the driver, front passenger
and rear passengers that his or her seat belt is not fastened. The buzzer
sounds intermittently for 30 seconds after the vehicle reaches a speed of
20 km/h (12 mph). Then, if the seat belt is still unfastened, the buzzer will
sound in a different tone for 90 more seconds.
*5: This symbol is displayed on the multi-information display.
■ Front passenger detection sensor, seat belt reminder and warning
buzzer
● If luggage is placed on the front passenger seat, the front passenger detec-
tion sensor may cause the warning light to flash and the warning buzzer to
sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.
■ Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage tempo-
rarily drops, the electric power steering system warning light may come on
and the warning buzzer may sound.
■ If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp will come on if the fuel tank becomes com-
pletely empty. If the fuel tank is empt y, refuel the vehicle immediately. The
malfunction indicator lamp will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized
Toyota dealer or repairer, or another duly qualified and equipped professional
as soon as possible.

6488-2. Steps to take in an emergency
PRIUS PHV_OM_OM47A89E_(EE)
■ When the tire pressure warning light comes on
Inspect the appearance of the tire to check that the tire is not punctured.
If the tire is punctured: P. 658
If the tire is not punctured:
Carry out the following procedure after the tire temperature has lowered suffi-
ciently.
● Check the tire inflation pressure and adjust to the appropriate level.
● If the warning light does not go out even after several minutes, check that
the tire inflation pressure is at the specified level and carry out initialization.
( P. 582)
The warning light may come on again if the above operations are conducted
without first allowing the tire temperature to lower sufficiently.
■ The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as
natural air leaks and tire inflation pressure changes caused by temperature.
In this case, adjusting the tire inflation pressure will turn off the warning light
(after a few minutes).
■ Conditions that the tire pressure warning system may not function prop-
erly
 P. 584
■ If the tire pressure warning light frequently comes on after blinking for
1minute
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
any authorized Toyota dealer or r epairer, or another duly qualified and
equipped professional.
■ Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location
or audio sound.

6498-2. Steps to take in an emergency
PRIUS PHV_OM_OM47A89E_(EE)
8
When trouble arises
WARNING
■When the electric power steering system warning light comes on
When the light comes on yellow, the assist to the power steering is
restricted. When the light comes on red, the assist to the power steering is
lost and handling operations of the steering wheel become extremely
heavy. When steering wheel operations are heavier than usual, grip the
steering wheel firmly and operate it using more force than usual.
■ If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a
loss of vehicle control and result in death or serious injury.
● Stop your vehicle in a safe place as soon as possible. Adjust the tire infla-
tion pressure immediately.
● If the tire pressure warning light comes on even after tire inflation pressure
adjustment, it is probable that you have a flat tire. Check the tires. If a tire
is flat, repair the flat tire by us ing emergency tire puncture repair kit.
● Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you
could lose control of the steering wheel or the brakes.
■ If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
NOTICE
■ To ensure the tire pressure warning system operates properly
Do not install tires with different specif ications or makers, as the tire pres-
sure warning system may not operate properly.

6508-2. Steps to take in an emergency
PRIUS PHV_OM_OM47A89E_(EE)
If a warning message is displayed
Master warning light
The master warning light also
comes on or flashes in order to
indicate that a message is cur-
rently being displayed on the multi-
information display.*
Multi-information display
Handling method
Follow the instructions of the mes-
sage on the multi-information dis-
play.
If any of the warning messages are shown again after the following
actions have been performed, contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
*: The master warning light may not come on or flash when a warning mes-
sage is displayed.
The multi-information display shows warnings of system mal-
functions, incorrectly performed operations, and messages that
indicate a need for maintenance. When a message is shown,
perform the correction procedure appropriate to the message.
When a message about charging is displayed, refer to P. 184.
1
2
3

6518-2. Steps to take in an emergency
PRIUS PHV_OM_OM47A89E_(EE)
8
When trouble arises
The warning lights and warning buzzers operate as follows depending
on the content of the message. If a message indicates the need for
inspection by a dealer, have the vehicle inspected by any authorized
Toyota dealer or repairer, or another duly qualified and equipped pro-
fessional immediately.
The operation of the warning lights and warning buzzers may differ
from those stated. In this case, perform the correction procedure
according to the displayed message.
*: A buzzer sounds the first time a message is shown on the multi-informa-
tion display.
Messages and warnings
System
warning
light
Warning
buzzer*Warning
Comes onSounds
Indicates an important situation, such
as when a system related to driving is
malfunctioning or that danger may
result if the correction procedure is not
performed
Comes on
or flashesSounds
Indicates an important situation, such
as when the systems shown on the
multi-information display may be mal-
functioning
FlashesSounds
Indicates a situation, such as when
damage to the vehicle or danger may
result
Comes onDoes not
sound
Indicates a condition, such as mal-
function of electrical components, their
condition, or indicates the need for
maintenance
FlashesDoes not
sound
Indicates a situation, such as when an
operation has been performed incor-
rectly, or indicates how to perform an
operation correctly

6528-2. Steps to take in an emergency
PRIUS PHV_OM_OM47A89E_(EE)
■Warning messages
The warning messages explained below may differ from the actual messages
according to operation conditions and vehicle specifications.
■ System warning lights
The master warning light does not come on or flash in the following cases.
Instead, a separate system warning light will come on along with a message
shown on the multi-information display.
● “Antilock Brake System Malfunction Visit Your Dealer”:
The ABS warning light comes on. ( P. 642)
● “Braking Power Low Visit Your Dealer”:
The brake system warning light (yellow) will come on. ( P. 641)
● Indicates that a door is not fully closed while the vehicle is stopped.:
The Open door warning light comes on. ( P. 6 4 4 )
■ If “Visit Your Dealer” is shown
The system or part shown on the multi- information display is malfunctioning.
Have the vehicle inspected by any authorized Toyota dealer or repairer, or
another duly qualified and equipped professional.
■ If a message about an operation is shown
● If a message about an operation of the accelerator pedal or brake pedal is
shown
A warning message about an operation of the brake pedal may be shown
while the driving assist systems such as PCS (Pre-Crash Safety system) or
the dynamic radar cruise control with full-speed range is operating. If a
warning message is shown, be sure to decelerate the vehicle or follow an
instruction shown on the multi-information display.
● A warning message is shown when Drive-Start Control, Brake Override Sys-
tem or Intelligent Clearance Sonar (if equipped) operates ( P. 314, 314,
449). Follow the instructions on the multi-information display.
● If a message about an operation of the power switch is shown
An instruction for operation of the power switch is shown when the incorrect
procedure for starting the hybrid system is performed or the power switch is
operated incorrectly. Follow the instructions shown on the multi-information
display to operate the power switch again.
● If a message about a shift operation is shown
To prevent the shift position from being selected incorrectly or the vehicle
from moving unexpectedly, the shift position may be changed automatically
( P. 335) or shift operation may be required. In this case, change the shift
position following the instructions on the multi-information display.
● If a message or image about an open/close state of a part or replenishment
of a consumable is shown
Confirm the part indicated by the multi-information display or a warning light,
and then perform the coping method such as closing the open door or
replenishing a consumable.