Page 449 of 568

4497-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
7
When trouble arises
(If equipped)
Hybrid system overheat warning light (warning buzzer)
Indicates that the hybrid system has overheated
This light may come on when driving under severe operat-
ing 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 the vehicle in a safe place.
Handling method ( P. 520)
(If equipped)
Cruise control indicator (yellow indicator)
Indicates a malfunction in the cruise control
Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
(Only outer frame flashes)(If equipped)
Low hybrid battery (traction battery) warning light
(warning buzzer)
Hybrid battery (traction battery) level becomes low
because the shift position is in N for long time
Because recharging is not possible when the shift
position is in N, shift the shift position to P when
parking the vehicle for a long time.
High coolant temperature warning light
Changes from a flashing to a solid light when the engine
coolant temperature increases
Immediately stop the vehicle in a safe place.
( P. 518)
Automatic headlight leveling system warning light
Indicates a malfunction in the automatic headlight leveling
system
Have the vehicle inspected by any authorized Toyota
retailer or Toyota authorized repairer, or any reliable
repairer immediately.
Open door warning light (warning buzzer)*3
Indicates that a door is not fully closed
Check that all the doors are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 6.0 L (1.6
gal., 1.3 Imp.gal.) or less
Refuel the vehicle.
Warning lightWarning light/Details/Actions
Page 455 of 568

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.
Page 460 of 568

4607-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
Indicates that the hybrid battery (traction battery)
power has dropped because a certain period of
time has elapsed after shifting the shift position to
N
A buzzer also sounds.
Restart the hybrid system when starting
the vehicle.
Indicates a malfunction in the shift control system
In this situation, there is a possibility that the
parking lock mechanism will not work. When
parking, park the vehicle on a flat surface and
apply the parking brake securely. Also, 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. A buzzer
also sounds.
Have the vehicle inspected by any autho-
rized Toyota retailer or Toyota authorized
repairer, or any reliable repairer.
Indicates a malfunction in the hybrid system
A buzzer also sounds.
Immediately stop the vehicle in a safe place
and contact any authorized Toyota retailer
or Toyota authorized repairer, or any reli-
able repairer.
Indicates that the hybrid battery (traction battery)
is low
A buzzer also sounds.
When stopping the vehicle, shift the shift
position to P. The battery cannot be
charged with the shift position in N.
Indicates that the shift position was changed and
Drive-Start Control was operated while depress-
ing the accelerator pedal
A buzzer also sounds.
Momentarily release the accelerator pedal.
Warning messageDetails/Actions
(Flashes)
(Flashes)
(Flashes)
Page 512 of 568

5127-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
Press the power switch.
In the event that the hybrid system still cannot be operated, contact
any authorized Toyota retailer or Toyota authorized repairer, or any
reliable repairer.
■ Stopping the hybrid system
Set the parking brake, shift the shift position to P and press the power switch
as you normally do when stopping the hybrid system.
■ Replacing the key battery
As the above procedure is a temporary measure, it is recommended that the
electronic key battery be replaced imm ediately when the battery is depleted.
( P. 417)
■ Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set,
the alarm may be triggered. ( P. 104)
■ Changing power switch modes
Release the brake pedal and press the power switch in step above.
The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P. 227)
■ When the electronic key does not work properly
● Make sure that the smart entry & start system has not been deactivated in
the customization setting. If it is off, turn the function on.
(Customizable features: P. 539)
● Check if battery-saving mode is set. If it is set, cancel the function.
( P. 155)
4
3
Page 516 of 568

5167-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
● If the 12-volt battery discharges while the shift position is in P, it may not be
possible to shift the shift position to other positions. In this case, the vehicle
cannot be towed without lifting both front wheels because the front wheels
will be locked. ( P. 437)
● When the 12-volt battery is reconnected, start the hybrid system and con-
firm that the shift position can be changed to each position using the shift
position indicator.
■ Charging the 12-volt battery
The electricity stored in the 12-volt battery will discharge gradually even when
the vehicle is not in use, due to natural discharge and the draining effects of
certain electrical appliances. If the vehicle is left for a long time, the 12-volt
battery may discharge, and the hybrid system may be unable to start. (The
12-volt battery recharges automatically while the hybrid system is operating.)
WARNING
■ 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.
Page 540 of 568
5408-2. Customization
PRIUS +_OM_OM47D30E_(EE)
Settings that can be changed using the multi-information display
Vehicles with navigation system: Settings that can be changed
using the navigation system
Settings that can be changed by any authorized Toyota retailer or
Toyota authorized repairer, or any reliable repairer
Definition of symbols: O = Available, – =Not available
■Smart entry & start system and wireless remote control
(P. 140, 153)
■Smart entry & start system (P. 153)
Customizable features
1
2
3
FunctionDefault
settingCustomized
setting
Operation signal
(emergency flashers)OnOff–OO
Open door reminder
buzzer (When locking the
vehicle)
OnOff––O
Time elapsed before the
automatic door lock func-
tion is activated if a door is
not opened after being
unlocked
30 seconds
60 seconds
––O
120 seconds
123
FunctionDefault
settingCustomized
setting
Smart entry & start
systemOn Off – O O
123
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