Page 438 of 552

4388-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)
WARNING
Observe the following precautions.
Failure to do so may result in death or serious injury.
■When towing the vehicle
■ While towing
●When towing using a rope, avoid sudden starts, etc. which place exces-
sive stress on the towing hook and rope.
The towing hook or rope may become damaged, broken debris may hit
people and cause serious damage.
● Do not turn the engine switch off (vehicles without a smart key system) or
the “POWER” switch off (vehicles with a smart key system).
There is a possibility that the steering wheel is locked and cannot be oper-
ated.
■ Installing towing eyelet to the vehicle
Make sure that towing eyelet is installed securely.
If not securely installed, towing eyelet may come loose during towing.
Be sure to transport the vehicle with the
front wheels raised or with all four wheels
raised off the ground. If the vehicle is
towed with the front wheels contacting
the ground, the drivetrain and related
parts may be damaged or electricity gen-
erated by the operation of the motor may
cause a fire to occur depending on the
nature of the damage or malfunction.
Page 444 of 552

4448-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)
*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.
Parking brake engaged warning buzzer:
P. 452
*2: Driver's and front passenger's seat belt buzzer: The driver's and front passenger's seat belt buzzer sounds to alert the
driver and front passenger that his or her seat belt is not fastened. Once
the engine switch is turned to the “ON” or “START” position (vehicles with-
out a smart key system) or the “POWER” switch is turned to ON mode
(vehicles with a smart key system), the buzzer sounds for 6 seconds. If the
vehicle reaches a speed of 12 mph (20 km/h), the buzzer sounds once. If
the seat belt is still unfastened after 30 seconds, the buzzer will sound
intermittently for 10 seconds. Then, if the seat belt is still unfastened, the
buzzer will sound in a different tone for 20 more seconds.
Tire pressure warning light When the light comes on:
Low tire inflation pressure such as
• Natural causes ( P. 445)
• Flat tire ( P. 462)
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
pressure is adjusted, have the system checked by
your Toyota dealer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system
( P. 446)
Have the system checked by your Toyota dealer.
Warning lightWarning light/Details/Actions
Page 446 of 552

4468-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)■
If the tire pressure warning system is not functioning
P. 402
■
If the tire pressure warning light frequently comes on after blinking
for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1
minute when the engine switch is turned to the “ON” position (vehicles
without a smart key system) or the “POWER” switch is turned to ON
mode (vehicles with a smart key system), have it checked by your Toyota
dealer.
■ Customization that can be configured at Toyota dealer
The vehicle speed linked seat belt reminder buzzer can be disabled. (Cus-
tomizable features P. 514) However, Toyota recommends that the seat belt
reminder buzzer be operational to aler t the driver and front passenger when
seat belts are not fastened.
■ Warning buzzer
In some cases, the buzzer may not be heard because of noisy place or an
audio sound.
WARNING
■When the electric power steerin g system warning light comes on
The steering wheel may become extremely heavy.
If the steering wheel becomes heavier than usual when operating, hold
firmly and operate 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
inflation pressure immediately.
●If the tire pressure warning light comes on even after tire inflation pres-
sure 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 Toyota dealer.
●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.
Page 450 of 552

4508-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)
Warning message and warning buzzer list
Warning messageDetails/Actions
Indicates a malfunction in the hybrid systemA buzzer sounds in accordance with the warn-
ing message that is displayed.
Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
Indicates that the high engine coolant tempera-
ture is too high
Immediately stop the vehicle in a safe
place. ( P. 483)
Indicates abnormal engine oil pressure
The warning message is shown if the engine oil
pressure is too low.
A buzzer also sounds.
Immediately stop the vehicle in a safe place
and contact your Toyota dealer.
(If equipped)
• Indicates a malfunction in the smart key system
• Indicates a malfunction in the steering lock sys-
tem
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
Indicates a malfunction in the LED headlight sys-
tem If there is a malfunction, the LED headlights do
not turn on. However, depending on the mal-
function, they may turn on.
A buzzer also sounds.
Have the vehicle inspected by your Toyota
dealer.
(Flashes)
(Flashes)
Page 454 of 552

4548-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)Indicates that the engine switch is turned to the
“ACC” or “LOCK” position (vehicles without a
smart key system) or the “POWER” switch is
turned to ACCESSORY mode or turned off (vehi-
cles with a smart key system) and the driver’s
door is opened while the lights are turned on
A buzzer also sounds.
Turn the lights off.
Indicates that the EV drive mode is not avail-
able
*2
The reason the EV drive mode is not available
(the vehicle is idling, battery charge is low,
speed is higher than the EV drive mode operat-
ing speed range, accelerator pedal is
depressed too much) may be displayed.
A buzzer also sounds.
Use the EV drive mode when it becomes
available.
Indicates that the EV drive mode has been auto-
matically canceled
*2
The reason the EV drive mode is not available
(the battery charge is low, speed is higher than
the EV drive mode speed range, accelerator
pedal is depressed too much) may be dis-
played.
A buzzer also sounds.
Drive the vehicle for a while.
Indicates that the TRAC (Traction Control) sys-
tem has been deactivated
Turn the TRAC on. ( P. 233)
Indicates that the accelerator and brake pedals
are being depressed simultaneously, and the
Brake Override System is operating. ( P. 167)
Release the accelerator or brake pedal.
Warning messageDetails/Actions
(Flashes)
(Flashes 3
times)
(Flashes)
Page 456 of 552
4568-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)
After taking the specified steps to correct the suspected problem,
check that the warning message and light go off.
Have the malfunction repaired immediately. (vehicles with a
smart key system)
InteriorbuzzerExterior buzzerWarning messageDetails/Actions
Once The electronic key is not
detected when an attempt is
made to start the hybrid sys-
tem.
Start the hybrid system
with the electronic key
present.
Once3 times
The electronic key was carried
outside the vehicle and the
driver’s door was opened and
closed while the shift lever was
in P without turning off the
“POWER” switch.
Turn the “POWER” switch
off or bring the electronic
key back into the vehicle.
The electronic key was carried
outside the vehicle and a door
other than the driver's door was
opened and closed while the
“POWER” switch was in a
mode other than off.
Bring the electronic key
back into the vehicle.
(Flashes)
(Flashes)
Page 457 of 552
4578-2. Steps to take in an emergency
8
When trouble arises
PRIUS c_U (OM52E68U)
Once
Contin-uous
(For 5 sec-
onds)
An attempt was made to lock
the doors using the entry func-
tion after the electronic key was
carried outside the vehicle with-
out turning off the “POWER”
switch.
Turn the “POWER” switch
off and lock the doors
again.
9 times
An attempt was made to start
the hybrid system without the
electronic key being present, or
the electronic key was not func-
tioning normally.
An attempt was made to drive
when the regular key was not
inside the vehicle.
Confirm that the elec-
tronic key is inside the
vehicle.
Contin-
uous
The driver’s door was opened
while a shift lever position other
than P was selected without
turning off the “POWER”
switch.
Shift the shift lever to P.
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Displayed alternately)
(Flashes)
(Flashes)
(Flashes)
Page 458 of 552

4588-2. Steps to take in an emergency
PRIUS c_U (OM52E68U)
Contin-uousContin-uous
The electronic key was carried
outside the vehicle and the
driver’s door was opened and
closed while a shift lever posi-
tion other than P was selected
without turning off the
“POWER” switch.
Shift the shift lever to P.
Bring the electronic key
back into the vehicle.
Contin-
uous
(5 sec-
onds)
An attempt was made to lock
the doors using the smart key
system while the electronic key
was still inside the vehicle.
Retrieve the electronic key
from the vehicle and lock
the doors again.
Once
Contin-
uous
(5 sec- onds)
An attempt was made to lock
either front door by opening a
door and putting the inside door
lock button into the lock posi-
tion, and then closing the door
while pulling on the outside
door handle with the electronic
key still inside the vehicle.
Retrieve the electronic key
from the vehicle and lock
the doors again.
Interior
buzzerExterior buzzerWarning messageDetails/Actions
(Displayed alternately)
(Flashes)
(Flashes)
(Flashes)