2019 TOYOTA PRIUS PLUS battery

4707-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
Carrying out the corresponding action turns the messages off.
Other displayed messages
Displayed messageDetails/Actions
Maintenance of the hybrid battery (traction bat-
tery) cooling component is required
The filter may be clogged, the air intake vent
may be blocked or there may be a gap in the
duct.
 Have maintenance performed on the hybrid
battery (traction battery) cooling compo-
nent at any authorized Toyota retailer or
Toyota authorized repairer, or any reliable
repairer.
Indicates that the EV drive mode is not available*
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.

4717-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
7
When trouble arises
*: For the EV drive mode operating conditions (P. 231).
Indicates that the EV drive mode has been auto-
matically canceled*
The reason the EV drive mode is not available
(the battery charge is low, speed is higher than
the EV drive mode operating speed range,
accelerator pedal is depressed too much) may
be displayed.
A buzzer also sounds.
 Drive the vehicle for a while.
(If equipped)
Indicates that the LDA (Lane Departure Alert with
steering control) system cannot be used as the
vehicle speed is approximately 50 km/h (32 mph)
or less
 Drive the vehicle at approximately 50 km/h
(32 mph) or more.
(If equipped)
Indicates that LDA (Lane Departure Alert with
steering control) system cannot be used due to
the vehicle speed being too high
 Slow down.
Displayed messageDetails/Actions
(Flashes 3 times)

4767-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
Once
The driver’s door was opened
and closed with the power
switch turned off and then the
power switch was put in
ACCESSORY mode twice with-
out the hybrid system being
started.
 Press the power switch
while depressing the brake
pedal.
During a hybrid system starting
procedure in the event that the
electronic key was not function-
ing properly ( P. 5 1 1 ) , t h e
power switch was touched with
the electronic key.
 Press the power switch
within 10 seconds of the
buzzer sounding.
Once
An attempt was made to start
the hybrid system with the shift
position in N.
 Shift the shift position to P
and start the hybrid sys-
tem.
Once
The electronic key has a low
battery.
 Replace the electronic key
battery. ( P. 417)
Interior
buzzer
Exterior
buzzerWarning messageDetails/Actions
(Flashes)
(Flashes)

5097-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
7
When trouble arises
If the hybrid system will not start
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly.* (P. 5 1 1 )
● There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle. ( P. 8 7 )
● There may be a malfunction in the immobilizer system.* (P. 9 1 )
● There may be a malfunction in the shift control system.*
( P. 229, 447, 460)
● The hybrid system may be malfunctioning due to an electrical prob-
lem such as electronic key battery depletion or a blown fuse. How-
ever, depending on the type of malfunction, an interim measure is
available to start the hybrid system. ( P. 510)
*: It may not be possible to shift the shift position other than P.
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. (P. 513)
● The 12-volt battery terminal connections may be loose or corroded.
( P. 389)
Reasons for the hybrid system not starting vary depending on
the situation. Check the following and perform the appropriate
procedure:
The hybrid system will not start even though the correct starting
procedure is being followed. ( P. 224)
The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.

5107-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. (P. 513)
● One or both of the 12-volt battery terminals may be disconnected.
( P. 389)
Contact any authorized Toyota retailer or Toyota authorized repairer,
or any reliable repairer if the problem cannot be repaired, or if repair
procedures are unknown.
When the hybrid system does not start, the following steps can be
used as an interim measure to start the hybrid system if the power
switch is functioning normally.
Do not use this starting procedure except in cases of emergency.
Set the parking brake.
Turn the power switch to ACCESSORY mode.
Press and hold the power switch for about 15 seconds while
depressing the brake pedal firmly.
Even if the hybrid system can be started using the above steps, the
system may be malfunctioning. Have the vehicle inspected by any
authorized Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
The interior lights and headlights do not turn on, or the horn
does not sound.
Emergency start function
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5117-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
7
When trouble arises
If the electronic key does not operate
properly
Use the mechanical key ( P. 141)
in order to perform the following
operations:
Locks all the doors
Unlocks all the doors
Ensure that the shift position is in P and depress the brake pedal.
Touch the Toyota emblem side
of the electronic key to the
power switch.
When the electronic key is
detected, a buzzer sounds and the
power switch will turn to ON mode.
When the smart entry & start sys-
tem is deactivated in customization
setting, the power switch will turn
to ACCESSORY mode.
Firmly depress the brake pedal and check that the smart entry &
start system indicator light (green) turns on (vehicles without multi-
information display) or is shown on the multi-information
display (vehicles with multi-information display).
If communication between the electronic key and vehicle is inter-
rupted ( P. 156) or the electronic key cannot be used because the
battery is depleted, the smart entry & start system and wireless
remote control cannot be used. In such cases, the doors can be
opened and the hybrid system can be started by following the pro-
cedure below.
Locking and unlocking the doors
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Starting the hybrid system
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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)
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5137-2. Steps to take in an emergency
PRIUS +_OM_OM47D30E_(EE)
7
When trouble arises
If the 12-volt battery is discharged
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following the
steps below.
Vehicles with alarm ( P. 104):
Confirm that the electronic key
is being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate
and doors locked. ( P. 106)
Open the hood (P. 375) and
fuse box cover.
When closing, first hook the lid
onto the two rear tabs.
Open the exclusive jump start-
ing terminal cover.
The following procedures may be used to start the hybrid sys-
tem if the vehicle’s 12-volt battery is discharged.
You can also call any authorized Toyota retailer or Toyota autho-
rized repairer, or any reliable repairer.
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