
663
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8
When trouble arises
8-2. Steps to take in an emergency
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 your Toyota dealer.
*: 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 performe d operations, and messages that
indicate a need for maintenance. When a message is shown,
perform the correction procedur e appropriate to the message.
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6648-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
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 your Toyota
dealer immediately.
The operation of the warning lights and warning buzzers may differ
from those state. 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 lightWarning
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

6658-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
8
When trouble arises
■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. 654)
● “Braking Power Low Visit Your Dealer”:
The brake system warning light (yellow) will come on. ( →P. 653)
● Indicates that a door is not fully closed while the vehicle is stopped.:
The Open door warning light comes on. ( →P. 655)
■ If “Visit Your Dealer” is shown
The system or part shown on the multi-information display is malfunctioning.
Have the vehicle inspected by your Toyota dealer.
■ 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-Collision System) (if
equipped) or the dynamic radar cruise control with full-speed range (if
equipped) is operating. If a warning message is shown, be sure to deceler-
ate the vehicle or follow an instruction shown on the multi-information dis-
play.
● A warning message is shown when Drive-Start Control, Brake Override Sys-
tem or Intelligent Clearance Sonar (if equipped) operates ( →P. 209, 210,
350). 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. 236) or operating the shift lever or P position switch 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.

6818-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
8
When trouble arises
■The compact spare tire (if equipped)
●The compact spare tire is identified by the label “TEMPORARY USE
ONLY” on the tire sidewall.
Use the compact spare tire temporarily, and only in an emergency.
●Make sure to check the tire inflation pressure of the compact spare tire.
(→ P. 730)
■When using the compact spare tire (if equipped)
As the compact spare tire is not equipped with a tire pressure warning
valve and transmitter, low inflation pressure of the spare tire will not be
indicated by the tire pressure warning system. Also, if you replace the
compact spare tire after the tire pressure warning light comes on, the light
remains on.
■When the compact spare tire is equipped (if equipped)
The vehicle height may become lower when driving with the compact
spare tire compared to when driving with standard tires.
■If you have a flat front tire on a road covered with snow or ice (vehi-
cles with compact spare tire)
Install the compact spare tire on one of the rear wheels of the vehicle.
Perform the following steps and fit tire chains to the front tires:
Replace a rear tire with the compact spare tire.
Replace the flat front tire with the tire removed from the rear of the vehi-
cle.
Fit tire chains to the front tires.
■Jack point
■Storing the jack The mark indicating the jack point is
stamped on the underside of the vehi-
cle.
Place the jack in the same direction as
the mark next to the storage space.
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6978-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
8
When trouble arises
■If the tire is inflated to more than the specified air pressure
Disconnect the hose from the valve.
Disconnect the hose from the valve, remove the air release cap from
the hose and then reconnect the hose.
Turn the compressor switch on and wait for several seconds, and then
turn it off. Check that the air pres sure indicator shows the specified air
pressure. ( →P. 730)
If the air pressure is under the designated pressure, turn the compres-
sor switch on again and repeat the inflation procedure until the speci-
fied air pressure is reached.
■The valve of a tire that has been repaired
After a tire is repaired with the emergency tire puncture repair kit, the
valve should be replaced.
■After a tire is repaired with the emergency tire puncture repair kit
●The tire pressure warning valve and transmitter should be replaced.
●Even if the tire inflation pressure is at the recommended level, the tire
pressure warning light may come on/flash.
■Note for checking the emergency tire puncture repair kit
Check the sealant expiry date occasionally.
The expiry date is shown on the bottle. Do not use sealant whose expiry
date has already passed. Otherwise, repairs conducted using the emer-
gency tire puncture repair kit may not be performed properly.Install the air release cap to the end of
the hose and push the protrusion on
the air release cap into the tire valve
to let some air out.
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7128-2. Steps to take in an emergency
PRIUS_OM_OM47B54U_(U)
WARNING
■When removing the 12-volt battery terminals
Always remove the negative (-) terminal first. If the positive (+) terminal con-
tacts any metal in the surrounding area when the positive (+) terminal is
removed, a spark may occur, leading to a fire in addition to electrical shocks
and death or serious injury.
■ Avoiding 12-volt battery fires or explosions
Observe the following precautions to prevent accidentally igniting the flam-
mable gas that may be emitted from the 12-volt battery:
● Make sure each jumper cable is connected to the correct terminal and that
it is not unintentionally in contact with any other than the intended terminal.
● Do not allow the other end of the jumper cable connected to the “+” termi-
nal to come into contact with any other parts or metal surfaces in the area,
such as brackets or unpainted metal.
● Do not allow the + and - clamps of the jumper cables to come into contact
with each other.
● Do not smoke, use matches, cigarette lighters or allow open flame near
the 12-volt battery.
■ 12-volt battery precautions
The 12-volt battery contains poisonous and corrosive acidic electrolyte,
while related parts contain lead and lead compounds. Observe the following
precautions when handling the 12-volt battery:
● When working with the 12-volt battery, always wear safety glasses and
take care not to allow any battery fluids (acid) to come into contact with
skin, clothing or the vehicle body.
● Do not lean over the 12-volt battery.
● In the event that battery fluid comes into contact with the skin or eyes,
immediately wash the affected area with water and seek medical attention.
Place a wet sponge or cloth over the affected area until medical attention
can be received.
● Always wash your hands after handling the 12-volt battery support, termi-
nals, and other battery-related parts.
● Do not allow children near the 12-volt battery.

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8-2. Steps to take in an emergency
If your vehicle overheats
■If the high coolant temperature warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air conditioning
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect the
hoses and radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
your Toyota dealer.
The following may indicate that your vehicle is overheating.
● The high coolant temperature warning light ( →P. 655) comes on
or flashes, or a loss of hybrid system power is experienced. (For
example, the vehicle s peed does not increase.)
● “Hybrid System Overhe ated” is shown on the multi-information
display.
● Steam comes out from under the hood.
Correction procedures
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776What to do if... (Troubleshooting)
PRIUS_OM_OM47B54U_(U)
●The seat belt reminder light is flashing
Are the driver and the front passenger wearing the seat belts? (→P. 657)
●The parking brake indicator is on
Is the parking brake released? (→P. 241)
Depending on the situation, other types of warning buzzer may also sound.
( →P. 653, 663)
●Is the electronic key left inside the vehicle?
Check the message on the multi-information display. ( →P. 663)
●When a warning light turns on or a warning message is displayed, refer to \
P. 653, 663.
A warning buzzer sounds during driving
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed