2019 TOYOTA PRIUS PLUS warning light

4527-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
■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 retailer or Toyota authorized repai rer, or any reliable repairer as soon
as possible.
■ 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. 478, 492
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. 395)
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 turn on due to natural causes such as
natural air leaks or 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).
■ When a tire is replaced with a spare tire
The compact spare tire is not equipped with a tire pressure warning valve and
transmitter. If a tire goes flat, the tire pressure warning light will not turn off
even though the flat tire has been replaced with the spare tire. Replace the
spare tire with the repaired tire and adjus t the tire inflation pressure. The tire
pressure warning light will go off after a few minutes.

4537-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
7
When trouble arises
■Conditions that the tire pressure warning system may not function prop-
erly
 P. 397
■ 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 retailer or Toyota authorized repairer, or any reliable
repairer.
■ Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location
or audio sound.

4547-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized
Toyota retailer or Toyota authorized r epairer, or any reliable repairer. 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.
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.
● Vehicles with spare tire: 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, change it with the spare tire and have
the flat tire repaired by the nearest any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
● Vehicles with emergency tire puncture repair kit: If the tire pressure warn-
ing light comes on even after tire inflat ion pressure adjustment, it is proba-
ble that you have a flat tire. Check the tire s. If a tire is flat, repair the flat tire
by using 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.

4557-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
7
When trouble arises
After taking the specified steps to correct the suspected problem,
check that the smart entry & start system warning light or the smart
entry & start system indicator light turn off.
Follow the correction procedures. (vehicles without multi-infor-
mation display)
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/DetailsCorrection
procedure
Continuous Continuous
(Flashes in yellow)
Smart entry & start
system warning light
The electronic key was
carried outside the
vehicle and the
driver’s door was
opened and closed
while any shift posi-
tion other than P was
selected without turn-
ing off the power
switch.
• Change the
shift position to
P.
• Bring the elec-
tronic key back
into the vehicle.
Once3 times
(Flashes in yellow)
Smart entry & start
system warning light
The electronic key was
carried outside the
vehicle and the
driver’s door was
opened and closed
while the shift position
P was selected without
turning off the power
switch.
Turn the power
switch off or bring
the electronic key
back into the vehi-
cle.

4567-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
Once3 times
(Flashes in yellow)
Smart entry & start
system warning light
Indicates that a door
other than the driver’s
door has been opened
and closed with the
power switch in any
mode other than off
and the electronic key
outside of the detec-
tion area.
Confirm the loca-
tion of the elec-
tronic key.
OnceContinuous
(5 seconds)(Flashes in yellow)
Smart entry & start
system warning light
An attempt was made
to exit the vehicle with
the electronic key and
lock the doors without
first turning the power
switch off.
Turn the power
switch off and
lock the doors
again.
Once(Flashes in yellow for 15 seconds)
Smart entry & start
system warning light
Indicates that the elec-
tronic key is not pres-
ent when attempting to
start the engine.
Confirm the loca-
tion of the elec-
tronic key.
9 times
(Flashes in yellow)
Smart entry & start
system warning light
An attempt was made
to drive when the regu-
lar key was not inside
the vehicle.
Confirm that the
electronic key is
inside the vehicle.
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/DetailsCorrection
procedure

4577-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
7
When trouble arises
Once(Flashes in yellow for 15 seconds)
Smart entry & start
system warning light
Indicates that the elec-
tronic key battery is
low.
Replace the bat-
tery. ( P. 417)
Once(Flashes in yellow for 15 seconds)
Smart entry & start
system warning light
Indicates a malfunction
in the smart entry &
start system.
Have the vehicle
inspected by any
authorized Toyota
retailer or Toyota
authorized
repairer, or any
reliable repairer.
Once(Flashes in yellow for 30 seconds)
Smart entry & start
system warning light
• When the doors were
unlocked with the
mechanical key and
then the power switch
was pressed, the elec-
tronic key could not be
detected in the vehicle.
• The electronic key
could not be detected
in the vehicle even
after the power switch
was pressed two con-
secutive times.
Touch the elec-
tronic key to the
power switch
while depressing
the brake pedal.
Interior
buzzer
Exterior
buzzer
Warning
lightWarning light/DetailsCorrection
procedure

4587-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(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
If any of the warning lights come on again after the following actions
have been performed, contact any authorized Toyota retailer or Toyota
authorized repairer, or any reliable repairer.
: If equipped
If a warning is shown on the multi-information display, stay calm
and perform the following actions:
1
2

4647-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
Indicates that the hybrid system has overheated
This message may be displayed when driving
under severe operating conditions, and the out-
put 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.)
A buzzer also sounds.
 Stop the vehicle in a safe place.
Handling method ( P. 520)
(If equipped)
Indicates a malfunction in the Automatic High
Beam
A buzzer also sounds.
 Have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
(If equipped)
Indicates a malfunction in the RSA (Road Sign
Assist)
A buzzer also sounds
 Have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Indicates that the accelerator and brake pedals
are being depressed simultaneously, and the
brake override system is operating.
 Release the accelerator pedal and depress
the brake pedal. ( P. 2 1 3 )
(if equipped)
The Automatic High Beam switch was pressed
with the low beam headlights turned on.
 Turn the high beam headlights on before
pressing the Automatic High Beam switch.
Warning messageDetails/Actions
(flashes)