Get Steps to take in an emergency -> If a warning message is displayed Guide for Toyota Prius 4 Door Fourth Generation (2016-2022)

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7-2. Steps to take in an emergency

If a warning message is displayed

The multi-information display shows warnings of system mal-

functions, incorrectly performed operations, and messages that

indicate a need for maintenance. When a message is shown,

perform the correction procedure appropriate to the message.

1

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.}*

2

3

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.

7

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Messages and warnings

7-2. Steps to take in an emergency

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.

System

warning

light

Warning

buzzer

*

Indicates an important situation, such

as when a system related to driving is

Comes on



Sounds malfunctioning or that danger may

result if the correction procedure is not

performed

Indicates an important situation, such

Comes on

or flashes

as when the systems shown on the

multi-information display may be mal-



Sounds

functioning

Indicates a situation, such as when

Sounds damage to the vehicle or danger may

result

Flashes

Comes on



Indicates a condition, such as mal-

Does not function of electrical components, their

sound

condition, or indicates the need for

maintenance

Indicates a situation, such as when an

Does not operation has been performed incor-

Flashes



sound

rectly, or indicates how to perform an

operation correctly

The operation of the warning lights and warning buzzers may differ

from those stated. 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.

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7-2. Steps to take in an emergency

■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

or image shown on the multi-information display.

●“Antilock Brake System Malfunction Visit Your Dealer”:

The ABS warning light comes on. (P. 581)

●“Braking Power Low Visit Your Dealer”:

The brake system warning light (yellow) will come on. (P. 580)

●Indicates that a door is not fully closed while the vehicle is stopped.:

The Open door warning light comes on. (P. 582)

■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 decel-

erate the vehicle or follow an instruction shown on the multi-information

display.

• A warning message is shown when Brake Override System operates.

(P. 225, 596)

7

• A warning message is shown when Drive-Start Control or Parking Sup-

port Brake function (if equipped) operates (P. 226, 367). 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. 253) or shift operation 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.

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7-2. Steps to take in an emergency

■If “See Owner’s Manual” is shown

●If “Braking Power Low Stop in a Safe Place See Owner’s Manual” is shown,

this may be a malfunction. Immediately stop the vehicle in a safe place and

contact your Toyota dealer. Continuing to drive the vehicle may be danger-

ous.

●If “Engine Oil Pressure Low” is shown, this may be a malfunction. Immedi-

ately stop the vehicle in a safe place and contact your Toyota dealer.

●If the following messages are shown, there may be a malfunction. Immedi-

ately have the vehicle inspected by your Toyota dealer.

• “Hybrid System Malfunction”

• “Check Engine”

• “Hybrid Battery System Malfunction”

• “Accelerator System Malfunction”

• “Smart Key System Malfunction See Owner’s Manual”

■If “Shift System Not Active Apply Parking Brake Securely While Parking

See Owner’s Manual” is shown

Indicates a temporary operation failure or malfunction in the shift control sys-

tem. Immediately have the vehicle inspected by your Toyota dealer.

When the message is shown, the hybrid system may not be started or the

shift position may not be changed normally. (Coping method: P. 597)

■If “Shift System Malfunction Apply Parking Brake Securely While Park-

ing See Owner’s Manual” is shown

Indicates a malfunction in the shift control system. Immediately have the vehi-

cle inspected by your Toyota dealer.

When the message is shown, the hybrid system may not be started or the

shift position may not be changed normally. (Coping method: P. 597)

■If “

Switch Malfunction Apply Parking Brake Securely While Parking

See Owner’s Manual” is shown

The P position switch may not operate. Immediately have the vehicle

inspected by your Toyota dealer.

When parking the vehicle, stop the vehicle on level ground and apply the

parking brake firmly.

■If “Shift System Malfunction Shifting Unavailable See Owner’s Manual”

is shown

Indicates a malfunction in the shift control system. Immediately have the vehi-

cle inspected by your Toyota dealer.

The shift position may not be shifted from P to other than P.

■If “Shift System Malfunction Stop in a Safe Place See Owner’s Manual”

is shown

Indicates a malfunction in the shift control system. Immediately have the vehi-

cle inspected by your Toyota dealer.

The shift position may not be changed. Stop the vehicle in a safe place.

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7-2. Steps to take in an emergency

■If “Shift System Malfunction See Owner’s Manual” is shown

Indicates a malfunction in the shift control system. Immediately have the sys-

tem inspected by your Toyota dealer.

The system may not operate properly.

■If “Low 12-Volt Battery Apply Parking Brake Securely While Parking See

Owner’s Manual” is shown

Indicates that the 12-volt battery charge is insufficient. Charge or replace the

12-volt battery.

●When the message is shown, the hybrid system may not start or the shift

position may not be changed normally. (Coping method: P. 597)

●After charging the 12-volt battery, the message may not go off until the shift

position is changed from P.

■If “Shifting Unavailable Low 12-Volt Battery See Owner’s Manual” is

shown

Indicates that the shift position cannot be changed because the voltage of the

12-volt battery drops. Charge or replace the 12-volt battery.

(Coping method in the case the 12-volt battery is discharged: P. 638)

■If “Hybrid System Overheated. Reduced Output Power.” is shown

The message may be shown when driving under severe operating conditions.

(For example, when driving up a long steep hill or driving up a steep hill in

reverse.)

Coping method: P. 644

■If “Maintenance required for Traction battery cooling parts See owner’s

manual” is shown

The filter may be clogged, the air intake vent may be blocked or there may be

a gap in the duct.

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●If the air intake vent is dirty, refer to P. 539 for information on how to clean

the air intake vent.

●If the message is shown when the air intake vent is not dirty, have the vehi-

cle inspected by your Toyota dealer.

■If “Traction Battery Needs to be Protected Refrain From the Use of

Position” is shown

This message may be displayed when the shift position is in N.

As the hybrid battery (traction battery) can not be charged when the shift

position is in N, shift the shift position to P when the vehicle is stopped.

■If “Traction Battery Needs to be Protected Shift into

to Restart” is

shown

This message is displayed when the hybrid battery (traction battery) charge

has become extremely low because the vehicle has been left with the N shift

position selected for a certain amount of time.

When operating the vehicle, shift to P and restart the hybrid system.

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7-2. Steps to take in an emergency

■If “Shift to Before Exiting Vehicle” is shown

Message is displayed when the driver’s door is opened without turning the

power switch to off with the shift position in any position other than P.

Shift the shift position to P.

■If “Shift is in

Release Accelerator Before Shifting” is shown

Message is displayed when the accelerator pedal has been depressed and

the shift position is in N.

Release the accelerator pedal and shift the shift position to D or R.

■If “Depress Brake When Vehicle is Stopped. Hybrid System may Over-

heat.” is shown

The message may be shown when the accelerator pedal is depressed to hold

the vehicle while the vehicle is stopped on an uphill, etc.

The hybrid system may overheat. Release the accelerator pedal and depress

the brake pedal.

■If “Auto Power OFF to Conserve Battery” is shown

The power switch has been turned off by the automatic power off function.

When starting the hybrid system next time, operate the hybrid system for

approximately 5 minutes to recharge the 12-volt battery.

■If “Engine Oil Level Low Add or Replace” is displayed

The engine oil level may be low. Check the level of the engine oil, and add

engine oil if necessary. This message may be displayed if the vehicle is

stopped on a slope. Move the vehicle to a level surface and check if the mes-

sage disappears.

■If “Accelerator and Brake Pedals Depressed Simultaneously” is shown

The accelerator and brake pedals are being depressed simultaneously.

(P. 225)

Release the accelerator pedal and depress the brake pedal.

■If “Front Camera Unavailable See Owner’s Manual” or “Front Camera

Unavailable” is displayed. *

The following systems may be suspended until the problem shown in the

message is resolved. (P. 303, 580)

^{●PCS (Pre-Collision System)}*

●LDA (Lane Departure Alert with steering control)*

●Dynamic radar cruise control with full-speed range*

●Automatic High Beam*

*^{: If equipped}

■If “Cruise Control not Available” is shown

The dynamic radar cruise control with full-speed range cannot be used tem-

porarily. Use the system when it becomes available again.

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7-2. Steps to take in an emergency

■If “Maintenance Required Soon” is displayed (U.S.A. only)

Indicates that all maintenance according to the driven distance on the mainte-

^{nance schedule}* should be performed soon.

Comes on approximately 4500 miles (7200 km) after the message has been

reset.

If necessary, perform maintenance. Please reset the message after the main-

tenance is performed. (P. 494)

*: Refer to the separate “Scheduled Maintenance Guide” or “Owner’s Manual

Supplement” for the maintenance interval applicable to your vehicle.

■If “Maintenance Required Visit Your Dealer” is displayed (U.S.A. only)

Indicates that all maintenance is required to correspond to the driven distance

^{on the maintenance schedule}*.

Comes on approximately 5000 miles (8000 km) after the message has been

reset. (The indicator will not work properly unless the message has been

reset.)

Perform the necessary maintenance. Please reset the message after the

maintenance is performed. (P. 494)

*: Refer to the separate “Scheduled Maintenance Guide” or “Owner’s Manual

Supplement” for the maintenance interval applicable to your vehicle.

■If the shift position cannot be changed or the power switch is turned to

ACCESSORY mode even if trying to turn the power switch off when a

warning message is shown

If the 12-volt battery is discharged or the shift control system is malfunction-

ing, the followings may occur.

●The shift position may not be changed to P.

When parking, stop the vehicle on level ground and apply the parking brake

firmly.

7

●The hybrid system may not start.

●The power switch may be turned to ACCESSORY mode even if trying to

turn the power switch off.

In this case, the power switch may be turned off after applying the parking

brake.

●The automatic P position selection function (P. 254) may not operate.

Before turning the power switch off, be sure to press the P position switch

and check that the shift position is in P by the shift position indicator or P

position switch indicator.

■Warning buzzer

P. 587

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7-2. Steps to take in an emergency

NOTICE

■If “Have Traction Battery Inspected” is shown

The hybrid battery (traction battery) is scheduled to be inspected or

replaced. Have the vehicle inspected by your Toyota dealer immediately.

●Continuing to drive the vehicle without having the hybrid battery (traction

battery) inspected will cause the hybrid system not to start.

●If the hybrid system does not start, contact your Toyota dealer immedi-

ately.

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Steps to take in an emergency -> If a warning message is displayed for Your Toyota Prius 4 Door Fourth Generation (2016-2022)

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