Page 711 of 816

7118-2. Steps to take in an emergency 
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
8
When trouble arises
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 cables or chains, avoid sudden starts, etc. which place 
excessive stress on the towing eyelets, cables or chains. The towing eye-
lets, cables or chains may become damaged, broken debris may hit peo-
ple, and cause serious damage. 
● Do not turn the power switch off. 
This may lead to an accident as the front wheels will be locked by the
parking lock. 
■ Installing towing eyelets to the vehicle 
● The towing eyelets are only for the vehicle equipped with them. Do not use 
the towing eyelets for another vehicle, and do not use the towing eyelets 
for this vehicle on another vehicle. 
● Make sure that towing eyelets are installed securely. 
If not securely installed, towing eyelets 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 725 of 816

7258-2. Steps to take in an emergency 
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
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
or image shown on the multi-information display. 
● “Antilock Brake System Malfunction Visit Your Dealer”: 
The ABS warning light comes on. ( P. 715) 
● “Braking Power Low Visit Your Dealer”: 
The brake system warning light (yellow) will come on. ( P. 714) 
● Indicates that a door is not fully closed while the vehicle is stopped.: 
The Open door warning light comes on. ( P.  7 1 7 ) 
■ If “Visit Your Dealer” is shown 
The system or part shown on the multi- information display is malfunctioning. 
Have the vehicle inspected by any authorized Toyota retailer or Toyota autho- 
rized repairer, or any reliable repairer. 
■ 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) or
the dynamic radar cruise control with full-speed range is operating. If a 
warning message is shown, be sure to decelerate the vehicle or follow an 
instruction shown on the multi-information display.
• A warning message is shown when Brake Override System operates. 
( P. 360, 729) 
• A warning message is shown when Drive-Start Control or Parking Sup-
port Brake function (if equipped) operates ( P. 360, 516). 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. 381) or shift operation may be required. In this case, change the shift 
position following the instructions on the multi-information display. 
         
        
        
     
        
        Page 728 of 816

7288-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■If “Maintenance required for Traction battery cooling parts See owner’s 
manual” is shown 
There is a possibility that the filter may be clogged, the air intake vent may be 
blocked or there may be a gap in the duct. 
● When the air intake vents or filters are dirty, clean them by the procedures 
on P. 623. 
● When the air intake vents or filters are not dirty and the warning message is 
shown, have the vehicle inspected at any authorized Toyota retailer or 
Toyota authorized repairer, or any reliable repairer. 
■ 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. 
■ 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 “Shifted to   Stop Vehicle to Shift to  ” is shown 
If the P position switch is pressed while driving, the shift position is changed 
to N and the message is shown. ( P. 381) 
■ 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. 
         
        
        
     
        
        Page 738 of 816
7388-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
Connect the hose to the valve.
Screw the end of the hose clock- 
wise as far as possible.
Make sure that the compressor 
switch is off. 
Connect the power plug to the power outlet socket. ( P. 606) 
Attach the sticker provided with 
the tire puncture repair kit to a 
position easily seen from the 
driver’s seat.
7
8
9
FrontRear
10 
         
        
        
     
        
        Page 751 of 816
7518-2. Steps to take in an emergency 
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
8
When trouble arises
If the electronic key does not operate  
properly
Use the mechanical key ( P. 279) in order to perform the following 
operations: 
Locks all the doors 
Closes the windows (turn and 
hold)*
Unlocks all the doors 
Opens the windows (turn and 
hold)* 
*: This setting must be customized at 
any authorized Toyota retailer or
Toyota authorized repairer, or any
reliable repairer. ( P. 782)
If communication between the electronic key and vehicle is inter- 
rupted ( P. 296) 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
1
2
3
4 
         
        
        
     
        
        Page 753 of 816
7538-2. Steps to take in an emergency 
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
8
When trouble arises
■Locking the charging port lid 
Close the charging port lid. ( P. 122) 
Lock the doors using the mechanical key. ( P. 751)
The charging port lid can be locked if the steps   and   are performed 
in reverse. 
■Unlocking the charging port lid 
Unlock the doors using the mechanical key. ( P. 751) 
Open the charging port lid. ( P. 122) 
Unlock the doors using the mechanical key. ( P. 751) 
Push the charging connector lock switch. ( P. 169)
The charging connector will be unlocked.
Locking and unlocking the charging port lid
Unlocking the charging connector
1
2
12
1
2
1
2 
         
        
        
     
        
        Page 754 of 816

7548-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
■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. 688) 
■ 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.  8 7 ) 
■ 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. 375) 
■ 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. 782) 
● Check if battery-saving mode is set. If it is set, cancel the function.  
( P. 295)
WARNING
■When using the mechanical key and operating the power windows 
Operate the power window after checking to make sure that there is no pos- 
sibility of any passenger having any of their body parts caught in the win-
dow.  
Also, do not allow children to operate the mechanical key. It is possible for 
children and other passengers to get caught in the power window.
3 
         
        
        
     
        
        Page 755 of 816
7558-2. Steps to take in an emergency 
Prius Plug-in Hybrid_OM_OM47D72E_(EE)
8
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 an alarm  
( P.  8 7 ) :   
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. 89)
Open the hood. (P. 634) 
Remove the engine cover.
Pull up the both ends of the cover 
vertically.
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.
1
2
3