Essential information for Your Toyota Prius 4 Door Fourth Generation (2016-2022)

567  
When trouble arises  
7
7-1. Essential information  
Emergency flashers .......... 568  
If your vehicle has to  
be stopped in an  
emergency...................... 569  
If the vehicle is trapped in  
rising water ..................... 570  
7-2. Steps to take in an  
emergency  
If your vehicle needs to  
be towed ......................... 572  
If you think something is  
wrong.............................. 579  
If a warning light turns on  
or a warning buzzer  
sounds ............................ 580  
If a warning message is  
displayed......................... 591  
If you have a flat tire  
(vehicles without  
spare tire)........................ 599  
If you have a flat tire  
(vehicles with  
spare tire)........................ 619  
If the hybrid system will  
not start........................... 633  
If the electronic key does  
not operate properly........ 635  
If the 12-volt battery is  
discharged ...................... 638  
If your vehicle overheats... 644  
If the vehicle becomes  
stuck ............................... 649  
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7-1. Essential information  
Emergency flashers  
The emergency flashers are used to warn other drivers when the  
vehicle has to be stopped in the road due to a breakdown, etc.  
Press the switch.  
All the turn signal lights will flash. To turn them off, press the switch once  
again.  
Vehicles with 7-inch display  
Vehicles with 11.6-inch display  
■Emergency flashers  
●If the emergency flashers are used for a long time while the hybrid system is  
not operating (while the “READY” indicator is not illuminated), the 12-volt  
battery may discharge.  
●If any of the SRS airbags deploy (inflate) or in the event of a strong rear  
impact, the emergency flashers will turn on automatically.  
The emergency flashers will turn off automatically after operating for approx-  
imately 20 minutes. To manually turn the emergency flashers off, press the  
switch twice.  
(The emergency flashers may not turn on automatically depending on the  
force of the impact and conditions of the collision.)  
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7-1. Essential information  
If your vehicle has to be stopped in an  
emergency  
Only in an emergency, such as if it becomes impossible to stop  
the vehicle in the normal way, stop the vehicle using the follow-  
ing procedure:  
1
Steadily step on the brake pedal with both feet and firmly depress it.  
Do not pump the brake pedal repeatedly as this will increase the effort  
required to slow the vehicle.  
2
Shift the shift position to N.  
If the shift position is shifted to N  
3
After slowing down, stop the vehicle in a safe place by the road.  
4
Stop the hybrid system.  
If the shift position cannot be shifted to N  
3
Keep depressing the brake pedal with both feet to reduce vehicle  
speed as much as possible.  
4
To stop the hybrid system,  
press and hold the power  
switch for 2 consecutive sec-  
onds or more, or press it briefly  
3 times or more in succession.  
Press and hold for 2 seconds or  
more, or press briefly 3 times or  
more  
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5
Stop the vehicle in a safe place by the road.  
WARNING  
■If the hybrid system has to be turned off while driving  
Power assist for the steering wheel will be lost, making the steering wheel  
heavier to turn. Decelerate as much as possible before turning off the hybrid  
system.  
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7-1. Essential information  
If the vehicle is trapped in rising water  
In the event the vehicle is submerged in water, remain calm and  
perform the following.  
● Remove the seat belt first.  
● If the door can be opened, open the door and exit the vehicle.  
● If the door can not be opened, open the window using the power  
window switch and exit the vehicle through the window.  
● If the window can not be opened using the power window switch,  
remain calm, wait until the water level inside the vehicle rises to the  
point that the water pressure inside of the vehicle equals the water  
pressure outside of the vehicle, and then open the door and exit the  
vehicle.  
WARNING  
■Using an emergency hammer*1 for emergency escape  
The rear side windows and rear window of this vehicle can be shattered by  
an emergency hammer*1 used for emergency escape, however, since the  
windshield and front side windows*2 are laminated glass they can not be  
shattered by an emergency hammer*1.  
*1: Contact your Toyota dealer or aftermarket accessory manufacturer for fur-  
ther information about an emergency hammer.  
*2: Vehicles with laminated glass  
■Escaping the vehicle from the window  
There are cases where escaping the vehicle from the window is not possi-  
ble due to seating position, passenger body type, etc.  
When using an emergency hammer, consider your seat location and the  
size of the window opening to ensure that the opening is accessible and  
large enough to escape.  
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7-1. Essential information  
■How to distinguish laminated glass  
When looking from the cross-sectional  
view point, laminated glass is two sheets  
of glass pasted together.  
1
Laminated glass  
2
Tempered glass  
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7-2. Steps to take in an emergency  
If your vehicle needs to be towed  
If towing is necessary, we recommend having your vehicle  
towed by your Toyota dealer or commercial towing service,  
using a wheel-lift type truck or flatbed truck.  
Use a safety chain system for all towing, and abide by all state/  
provincial and local laws.  
Situations when it is not possible to be towed by another vehicle  
In the following situations, it is not possible to be towed by another  
vehicle using cables or chains, as the front wheels may be locked due  
to the parking lock. Contact your Toyota dealer or commercial towing  
service.  
● There is a malfunction in the shift control system. (P. 245, 597)  
● There is a malfunction in the immobilizer system. (P. 94)  
● There is a malfunction in the smart key system. (P. 635)  
● The 12-volt battery is discharged. (P. 638)  
Situations when it is necessary to contact dealers before towing  
The following may indicate a problem with your hybrid transmission.  
Contact your Toyota dealer or commercial towing service before tow-  
ing.  
● The hybrid system warning message is displayed and the vehicle  
does not move.  
● The vehicle makes an abnormal sound.  
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7-2. Steps to take in an emergency  
Towing with a sling-type truck  
Do not tow with a sling-type truck  
to prevent body damage.  
Towing with a wheel-lift type truck  
From the front (2WD models)  
From the front (AWD models)  
Release the parking brake.  
Use a towing dolly under the rear  
wheels.  
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From the rear  
Use a towing dolly under the front  
wheels.  
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Using a flatbed truck  
7-2. Steps to take in an emergency  
If your vehicle is transported by a  
flatbed truck, it should be tied  
down at the locations shown in the  
illustration.  
Front  
If you use chains or cables to tie  
down your vehicle, the angles  
shaded in black must be 45.  
Do not overly tighten the tie  
downs or the vehicle may be dam-  
aged.  
Emergency towing  
If a tow truck is not available in an emergency, your vehicle may be  
temporarily towed using cables or chains secured to the emergency  
towing eyelets. This should only be attempted on hard surfaced roads  
for a short distance at under 18 mph (30 km/h).  
A driver must be in the vehicle to steer and operate the brakes. The  
vehicle’s wheels, drive train, axles, steering and brakes must be in  
good condition.  
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7-2. Steps to take in an emergency  
Emergency towing procedure  
1
Take out the towing eyelet. (P. 601, 620)  
2
3
4
Remove the eyelet cover using  
a flathead screwdriver.  
To protect the bodywork, place a  
rag between the screwdriver and  
the vehicle body as shown in the  
illustration.  
Insert the towing eyelet into the  
hole and tighten partially by  
hand.  
Tighten down the towing eyelet  
securely using a wheel nut  
wrench or hard metal bar.  
When tightening with a wheel nut  
wrench or hard metal bar, make  
sure not to damage the vehicle  
body.  
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5
6
Securely attach cables or chains to the towing eyelet.  
Take care not to damage the vehicle body.  
Enter the vehicle being towed and start the hybrid system.  
If the hybrid system does not start, turn the power switch to ON mode.  
Turn off the Parking Support Brake function. (if equipped): P. 363  
Shift the shift position to N* and release the parking brake.  
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*: If the shift position cannot be changed or the current shift position  
can not be confirmed, contact your Toyota dealer or commercial tow-  
ing service before towing.  
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7-2. Steps to take in an emergency  
■While towing  
If the hybrid system is off, the power assist for the brakes and steering will not  
function, making steering and braking more difficult.  
■Wheel nut wrench  
Wheel nut wrench is installed in luggage compartment. (P. 601, 620)  
■Towing eyelet installation hole on the rear of the vehicle  
The hole is equipped for fastening the  
vehicle while shipping. Your vehicle can-  
not tow another vehicle.  
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7-2. Steps to take in an emergency  
WARNING  
Observe the following precautions.  
Failure to do so may result in death or serious injury.  
■When towing the vehicle  
2WD models  
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.  
AWD models  
Be sure to transport the vehicle with all  
four wheels raised off the ground. If the  
vehicle is towed with the tires contacting  
the ground, the drivetrain or related parts  
may be damaged, the vehicle may fly off  
the truck, or electricity generated by the  
operation of the motor may cause a fire  
to occur depending on the nature of the  
damage or malfunction.  
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7-2. Steps to take in an emergency  
WARNING  
Observe the following precautions.  
Failure to do so may result in death or serious injury.  
■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.  
NOTICE  
■To prevent damage to the vehicle when towing using a wheel-lift type  
truck  
When raising the vehicle, ensure adequate ground clearance for towing at  
the opposite end of the raised vehicle. Without adequate clearance, the  
vehicle could be damaged while being towed.  
■To prevent damage to the vehicle when towing with a sling-type truck  
Do not tow with a sling-type truck, either from the front or rear.  
■To prevent damage to the vehicle during emergency towing  
Do not secure cables or chains to the suspension components.  
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7-2. Steps to take in an emergency  
If you think something is wrong  
If you notice any of the following symptoms, your vehicle proba-  
bly needs adjustment or repair. Contact your Toyota dealer as  
soon as possible.  
Visible symptoms  
● Fluid leaks under the vehicle  
(Water dripping from the air conditioning after use is normal.)  
● Flat-looking tires or uneven tire wear  
● High coolant temperature warning light flashes or comes on  
Audible symptoms  
● Changes in exhaust sound  
● Excessive tire squeal when cornering  
● Strange noises related to the suspension system  
● Pinging or other noises related to the hybrid system  
Operational symptoms  
● Engine missing, stumbling or running roughly  
● Appreciable loss of power  
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● Vehicle pulls heavily to one side when braking  
● Vehicle pulls heavily to one side when driving on a level road  
● Loss of brake effectiveness, spongy feeling, pedal almost touches  
the floor  
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7-2. Steps to take in an emergency  
If a warning light turns on or a warning  
buzzer sounds  
Calmly perform the following actions if any of the warning lights  
comes on or flashes. If a light comes on or flashes, but then  
goes off, this does not necessarily indicate a malfunction in the  
system. However, if this continues to occur, have the vehicle  
inspected by your Toyota dealer.  
Warning light and warning buzzer list  
Warning light  
Warning light/Details/Actions  
Brake system warning light and warning buzzer (red  
indicator)*1  
Indicates that:  
• The brake fluid level is low; or  
(U.S.A.)  
• The brake system is malfunctioning  
Immediately stop the vehicle in a safe place and con-  
tact your Toyota dealer. Continuing to drive the vehi-  
cle may be dangerous.  
(Canada)  
Brake system warning light (yellow indicator)  
Indicates a malfunction in:  
• The regenerative braking system; or  
• The electronically controlled brake system  
Have the vehicle inspected by your Toyota dealer  
immediately.  
Charging system warning light  
Indicates a malfunction in the vehicle’s charging system  
Immediately stop the vehicle in a safe place and con-  
tact your Toyota dealer.  
Low engine oil pressure warning light  
(warning buzzer)*2  
Indicates that the engine oil pressure is too low  
Immediately stop the vehicle in a safe place and con-  
tact your Toyota dealer.  
Malfunction indicator lamp  
Indicates a malfunction in:  
• The hybrid system;  
(U.S.A.)  
• The electronic engine control system; or  
• The electronic throttle control system  
Have the vehicle inspected by your Toyota dealer  
immediately.  
(Canada)  
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7-2. Steps to take in an emergency  
Warning light/Details/Actions  
Warning light  
SRS warning light  
Indicates a malfunction in:  
• The SRS airbag system;  
• The front passenger occupant classification system; or  
• The seat belt pretensioner system  
Have the vehicle inspected by your Toyota dealer  
immediately.  
ABS warning light  
Indicates a malfunction in:  
• The ABS; or  
(U.S.A.)  
• The brake assist system  
Have the vehicle inspected by your Toyota dealer  
immediately.  
(Canada)  
Electric power steering system warning light (warning  
buzzer)  
Indicates a malfunction in the EPS (Electric Power Steer-  
ing) system  
(Red/yellow)  
Have the vehicle inspected by your Toyota dealer  
immediately.  
PCS warning light  
Indicates a malfunction in the PCS (Pre-Collision System)  
or that the system is temporarily unavailable due to the  
vehicle being extremely hot/cold, or dirt around a front  
sensor, etc.  
Follow the instructions displayed on the multi-infor-  
mation display. (P. 303, 596)  
(Flashes or  
illuminates)  
(If equipped)  
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If the PCS (Pre-Collision System) or VSC (Vehicle Stability  
Control) system is disabled, the PCS warning light will illu-  
minate.  
P. 303  
Slip indicator light  
Indicates a malfunction in:  
• The VSC system;  
• The TRAC system; or  
• The hill-start assist control system  
Have the vehicle inspected by your Toyota dealer  
immediately.  
The light will flash when the ABS, VSC or TRAC system is  
operating.  
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7-2. Steps to take in an emergency  
Warning light  
Warning light/Details/Actions  
High coolant temperature warning light  
• When the light flashes:  
Indicates that the engine coolant temperature is too high  
The light changes from a flashing to a solid light when  
the temperature further increases  
Immediately stop the vehicle in a safe place. (P. 644)  
• When the light comes on without flashing:  
Indicates a malfunction in the exhaust heat recirculator  
system  
Have the vehicle inspected by your Toyota dealer  
immediately.  
PKSB OFF indicator  
Indicates a malfunction in the Parking Support Brake func-  
tion  
Have the vehicle inspected by your Toyota dealer.  
The warning light will operate as follows, even when the  
system is not malfunctioning:  
• The light will come on when the Parking Support Brake  
function is turned off (P. 363)  
(Flashes)  
(If equipped)  
• The light will come on when the Parking Support Brake  
function is operating (P. 367)  
• The light will flash when the system cannot be temporar-  
ily used (P. 371)  
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 1.7 gal.  
(6.4 L, 1.4 Imp.gal.) or less  
Refuel the vehicle.  
Driver’s and front passenger’s seat belt reminder light  
(warning buzzer)*4  
Warns the driver and/or front passenger to fasten their  
seat belts  
Fasten the seat belt.  
If the front passenger’s seat is occupied, the front  
passenger’s seat belt also needs to be fastened to  
make the warning light (warning buzzer) turn off.  
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7-2. Steps to take in an emergency  
Warning light/Details/Actions  
Warning light  
Rear passengers’ seat belt reminder lights (warning  
buzzer)*5  
(U.S.A.)  
Warns the rear passengers to fasten their seat belts  
Fasten the seat belt.  
(Canada)  
Master warning light  
A buzzer sounds and the warning light comes on and  
flashes to indicate that the master warning system has  
detected a malfunction.  
P. 591  
Tire pressure warning light  
When the light comes on:  
Low tire inflation pressure such as  
• Natural causes (P. 587)  
• Flat tire (P. 599, 619)  
Adjust the tire inflation pressure to the specified  
level.  
The light will turn off after a few minutes. In case  
the light does not turn off even if the tire inflation  
pressure is adjusted, have the system checked by  
your Toyota dealer.  
When the light comes on after blinking for 1 minute:  
Malfunction in the tire pressure warning system  
(P. 587)  
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Have the system checked by your Toyota dealer.  
“AFS OFF” indicator  
Indicates a malfunction in the adaptive front-lighting sys-  
tem  
(Flashes)  
(If equipped)  
Have the vehicle inspected by your Toyota dealer  
immediately.  
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7-2. Steps to take in an emergency  
Warning light  
Warning light/Details/Actions  
Brake Override System/Drive-Start Control/  
Parking Support Brake function (symbol display)*6  
Brake Override System  
Indicates that the accelerator and brake pedals are being  
depressed simultaneously, and the Brake Override Sys-  
tem is operating  
Release the accelerator pedal and depress the brake  
pedal.  
Indicates a malfunction in the Brake Override System  
(with warning buzzer)  
Have the vehicle inspected by your Toyota dealer  
immediately.  
Drive-Start Control  
Indicates that the shift position was changed and Drive-  
Start Control was operated while depressing the accelera-  
tor pedal (with warning buzzer)  
Momentarily release the accelerator pedal.  
Indicates a malfunction in the Drive-Start Control (with  
warning buzzer)  
Have the vehicle inspected by your Toyota dealer  
immediately.  
Parking Support Brake function  
Indicates that the Parking Support Brake function (if  
equipped) is operating (P. 367)  
Follow the instruction that is displayed on the multi-  
information display.  
Low engine oil pressure warning (symbol display)*6  
Indicates that the engine oil pressure is too low  
Immediately stop the vehicle in a safe place and con-  
tact your Toyota dealer.  
(Canada only)  
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7-2. Steps to take in an emergency  
*1: Brake system warning buzzer:  
When there is a possible problem that could affect braking performance,  
the warning light will come on and a warning buzzer will sound.  
*2: Low engine oil pressure warning buzzer:  
A buzzer also sounds continuously for approximately 30 seconds at maxi-  
mum in addition to the low engine oil pressure warning light when the  
“READY” indicator is illuminated.  
*3: Open door warning buzzer:  
The open door warning buzzer sounds to alert one or more of the doors is  
not fully closed (with the vehicle having reached a speed of 3 mph [5 km/h]).  
*4: Driver and front passenger’s seat belt warning buzzer:  
The driver’s seat belt warning buzzer sounds to alert the driver that his or  
her seat belt is not fastened. Once the power switch is turned to ON mode,  
the buzzer sounds for 6 seconds. If the vehicle reaches a speed of 12 mph  
(20 km/h), the buzzer sounds once. If the seat belt is still unfastened after  
24 seconds, the buzzer will sound intermittently for 6 seconds. Then, if the  
seat belt is still unfastened, the buzzer will sound in a different tone for 90  
more seconds.  
The front passenger’s seat belt warning buzzer sounds to alert the front  
passenger that his or her seat belt is not fastened. The buzzer sounds  
once if the vehicle reaches a speed of 12 mph (20 km/h). If the seat belt is  
still unfastened after 24 seconds, the buzzer will sound intermittently for 6  
seconds. Then, if the seat belt is still unfastened, the buzzer will sound in a  
different tone for 90 more seconds.  
*5: Rear passengers’ seat belt warning buzzer:  
The rear passengers’ seat belt warning buzzer sounds to alert the rear  
passengers that his or her seat belt is not fastened. The buzzer sounds  
intermittently for 6 seconds after the vehicle reaches a speed of 12 mph  
(20 km/h). Then, if the seat belt is still unfastened, the buzzer will sound in  
a different tone for 24 more seconds.  
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*6: This symbol is displayed on the multi-information display.  
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7-2. Steps to take in an emergency  
■SRS warning light  
This warning light system monitors the airbag sensor assembly, front impact  
sensors, side impact sensors (front door), side impact sensors (rear), driver’s  
seat belt buckle switch, front passenger occupant classification system (ECU  
and sensors), “AIR BAG ON” indicator light, “AIR BAG OFF” indicator light,  
front passenger’s seat belt buckle switch, seat belt pretensioners, airbags,  
interconnecting wiring and power sources. (P. 36)  
■Front passenger detection sensor, seat belt reminder and warning  
buzzer  
●If luggage is placed on the front passenger seat, the front passenger detec-  
tion sensor may cause the warning light to flash and the warning buzzer to  
sound even if a passenger is not sitting in the seat.  
●If a cushion is placed on the seat, the sensor may not detect a passenger,  
and the warning light may not operate properly.  
■Electric power steering system warning light (warning buzzer)  
When the 12-volt battery charge becomes insufficient or the voltage tempo-  
rarily drops, the electric power steering system warning light may come on  
and the warning buzzer may sound.  
■If the malfunction indicator lamp comes on while driving  
First check the following:  
●Is the fuel tank empty?  
If it is, fill the fuel tank immediately.  
●Is the fuel tank cap loose?  
If it is, tighten it securely.  
The malfunction indicator lamp will go off after several driving trips.  
If the malfunction indicator lamp does not go off even after several trips, con-  
tact your Toyota dealer as soon as possible.  
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7-2. Steps to take in an emergency  
■When the tire pressure warning light comes on  
Inspect the appearance of the tire to check that the tire is not punctured.  
If the tire is punctured: P. 599, 619  
If the tire is not punctured:  
Check the tire inflation pressure and adjust to the appropriate level. Initial-  
izing the tire pressure warning system will not turn off the tire pressure  
warning light.  
■The tire pressure warning light may come on due to natural causes  
The tire pressure warning light may come on due to natural causes such  
as natural air leaks and tire inflation pressure changes caused by tem-  
perature. In this case, adjusting the tire inflation pressure will turn off the  
warning light (after a few minutes).  
■When a tire is replaced with a spare tire  
Vehicles with compact spare tire: The compact spare tire is not equipped  
with a tire pressure warning valve and transmitter. If a tire goes flat, the  
tire pressure warning light will not turn off even though the flat tire has  
been replaced with the spare tire. Replace the spare tire with the repaired  
tire and adjust the tire inflation pressure. The tire pressure warning light  
will go off after a few minutes.  
Vehicles with full-size spare tire: The spare tire is also equipped with a tire  
pressure warning valve and transmitter. The tire pressure warning light  
will turn on if the tire inflation pressure of the spare tire is low. If a tire goes  
flat, the tire pressure warning light will not turn off even though the flat tire  
has been replaced with the spare tire. Replace the spare tire with the  
repaired tire and adjust the tire inflation pressure. The tire pressure warn-  
ing light will go off after a few minutes.  
■Conditions that the tire pressure warning system may not function  
properly  
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P. 526  
■If the tire pressure warning light frequently comes on after blinking  
for 1 minute  
If the tire pressure warning light frequently comes on after blinking for  
1 minute when the power switch is turned to ON mode, have it checked  
by your Toyota dealer.  
■Warning buzzer  
In some cases, the buzzer may not be heard due to being in a noisy location  
or audio sound.  
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7-2. Steps to take in an emergency  
WARNING  
■When the electric power steering system warning light comes on  
When the light comes on yellow, the assist to the power steering is  
restricted. When the light comes on red, the assist to the power steering is  
lost and handling operations of the steering wheel become extremely  
heavy. When steering wheel operations are heavier than usual, grip the  
steering wheel firmly and operate it using more force than usual.  
■If the tire pressure warning light comes on  
Be sure to observe the following precautions. Failure to do so could  
cause a loss of vehicle control and result in death or serious injury.  
●Stop your vehicle in a safe place as soon as possible. Adjust the tire  
inflation pressure immediately.  
●Vehicles with emergency tire puncture repair kit: If the tire pressure  
warning light comes on even after tire inflation pressure adjustment, it  
is probable that you have a flat tire. Check the tires. If a tire is flat,  
repair the flat tire by using emergency tire puncture repair kit.  
●Vehicles with spare tire: If the tire pressure warning light comes on  
even after tire inflation pressure adjustment, it is probable that you  
have a flat tire. Check the tires. If a tire is flat, change it with the spare  
tire and have the flat tire repaired by the nearest Toyota dealer.  
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate,  
you could lose control of the steering wheel or the brakes.  
■If a blowout or sudden air leakage should occur  
The tire pressure warning system may not activate immediately.  
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7-2. Steps to take in an emergency  
WARNING  
■Maintenance of the tires  
Each tire, including the spare (if provided), should be checked monthly  
when cold and inflated to the inflation pressure recommended by the  
vehicle manufacturer on the vehicle placard or tire inflation pressure  
label (tire and load information label). (If your vehicle has tires of a dif-  
ferent size than the size indicated on the vehicle placard or tire inflation  
pressure label [tire and load information label], you should determine  
the proper tire inflation pressure for those tires.)  
As an added safety feature, your vehicle has been equipped with a tire  
pressure monitoring system (TPMS-tire pressure warning system) that  
illuminates a low tire pressure telltale (tire pressure warning light) when  
one or more of your tires is significantly under-inflated. Accordingly,  
when the low tire pressure telltale (tire pressure warning light) illumi-  
nates, you should stop and check your tires as soon as possible, and  
inflate them to the proper pressure. Driving on a significantly under-  
inflated tire causes the tire to overheat and can lead to tire failure.  
Under-inflation also reduces fuel efficiency and tire tread life, and may  
affect the vehicle’s handling and stopping ability.  
Please note that the TPMS (tire pressure warning system) is not a sub-  
stitute for proper tire maintenance, and it is the driver’s responsibility to  
maintain correct tire pressure, even if under-inflation has not reached  
the level to trigger illumination of the TPMS low tire pressure telltale (tire  
pressure warning light).  
Your vehicle has also been equipped with a TPMS (tire pressure warn-  
ing system) malfunction indicator to indicate when the system is not  
operating properly. The TPMS (tire pressure warning system) malfunc-  
tion indicator is combined with the low tire pressure telltale (tire pressure  
warning light). When the system detects a malfunction, the telltale will  
flash for approximately one minute and then remain continuously illumi-  
nated. This sequence will continue upon subsequent vehicle start-ups  
as long as the malfunction exists. When the malfunction indicator is illu-  
minated, the system may not be able to detect or signal low tire pres-  
sure as intended.  
7
TPMS (tire pressure warning system) malfunctions may occur for a vari-  
ety of reasons, including the installation of replacement or alternate tires  
or wheels on the vehicle that prevent the TPMS (tire pressure warning  
system) from functioning properly. Always check the TPMS (tire pres-  
sure warning system) malfunction telltale after replacing one or more  
tires or wheels on your vehicle to ensure that the replacement or alter-  
nate tires and wheels allow the TPMS (tire pressure warning system) to  
continue to function properly.  
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7-2. Steps to take in an emergency  
NOTICE  
■To ensure the tire pressure warning system operates properly  
Do not install tires with different specifications or makers, as the tire  
pressure warning system may not operate properly.  
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591  
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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592  
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  
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.  
7
●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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7-2. Steps to take in an emergency  
If you have a flat tire (vehicles without  
spare tire)  
Your vehicle is not equipped with a spare tire, but instead is  
equipped with an emergency tire puncture repair kit.  
A puncture caused by a nail or screw passing through the tire  
tread can be repaired temporarily using the emergency tire  
puncture repair kit. (The kit contains a bottle of sealant. The  
sealant can be used only once to temporarily repair one tire  
without removing the nail or screw from the tire.) After temporar-  
ily repairing the tire with the kit, have the tire repaired or  
replaced by your Toyota dealer.  
WARNING  
■If you have a flat tire  
Do not continue driving with a flat tire.  
Driving even a short distance with a flat tire can damage the tire and the  
wheel beyond repair, which could result in an accident.  
7
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600  
Before repairing the tire  
7-2. Steps to take in an emergency  
● Stop the vehicle in a safe place on a hard, flat surface.  
● Set the parking brake.  
● Shift the shift position to P.  
● Stop the hybrid system.  
● Turn on the emergency flashers.  
● Check the degree of the tire damage.  
A tire should only be repaired  
with the emergency tire punc-  
ture repair kit if the damage is  
caused by a nail or screw pass-  
ing through the tire tread.  
• Do not remove the nail or  
screw from the tire. Remov-  
ing the object may widen the  
opening and make emer-  
gency repair with the repair  
kit impossible.  
• To avoid sealant leakage, move the vehicle until the area of the  
puncture, if known, is positioned at the top of the tire.  
■A flat tire that cannot be repaired with the emergency tire puncture  
repair kit  
In the following cases, the tire cannot be repaired with the emergency tire  
puncture repair kit. Contact your Toyota dealer.  
●When the tire is damaged due to driving without sufficient air pressure  
●When there are any cracks or damage at any location on the tire, such  
as on the side wall, except the tread  
●When the tire is visibly separated from the wheel  
●When the cut or damage to the tread is 0.16 in. (4 mm) long or more  
●When the wheel is damaged  
●When two or more tires have been punctured  
●When more than one sharp objects such as nails or screws have passed  
through the tread on a single tire  
●When the sealant has expired  
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601  
7-2. Steps to take in an emergency  
Location of the emergency tire puncture repair kit and tools  
2WD models  
1
2
4
5
Jack handle  
Emergency tire puncture  
repair kit  
Jack  
(Use of the jack: P. 605)  
Towing eyelet  
3
Wheel nut wrench  
7
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602  
AWD models  
7-2. Steps to take in an emergency  
1
2
3
4
5
Towing eyelet  
Emergency tire puncture  
repair kit  
Jack handle  
Jack  
Wheel nut wrench  
(Use of the jack: P. 605)  
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603  
7-2. Steps to take in an emergency  
Emergency tire puncture repair kit components  
1
2
3
4
5
6
Hose  
Power plug  
Air release cap  
Sticker  
Air pressure gauge  
Compressor switch  
7
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604  
7-2. Steps to take in an emergency  
Taking out the emergency tire puncture repair kit  
1
Pull up the handle to open the  
deck board.  
2
Secure the deck board using  
the grocery bag hooks.  
(P. 457)  
3
Take out the emergency tire puncture repair kit.  
2WD models: If the luggage cover (if equipped) is stowed, turn over the  
tonneau cover to take out the emergency tire puncture repair kit.  
2WD models  
AWD models  
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605  
7-2. Steps to take in an emergency  
■Taking out the jack  
Unhook the tightening strap and take out the jack.  
2WD models  
AWD models  
■Storing the jack  
Place the jack in the same direction as the mark next to the storage  
space.  
2WD models  
AWD models  
WARNING  
■After using the tools and jack  
Before driving, make sure all the tools and jack are securely in place in  
their storage location to reduce the possibility of personal injury during a  
collision or sudden braking.  
7
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606  
7-2. Steps to take in an emergency  
Emergency repair method  
1
Take out the repair kit from the plastic bag.  
2
Remove the valve cap from the  
valve of the punctured tire.  
3
Extend the hose. Remove the  
air release cap from the hose.  
Attach the sticker enclosed with  
the bottle on the specified loca-  
tions. (See step 10 .)  
You will use the air release cap  
again. Therefore keep it in a safe  
place.  
4
Connect the hose to the valve.  
Screw the end of the hose clock-  
wise as far as possible.  
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607  
7-2. Steps to take in an emergency  
5
6
7
Make sure that the compressor  
switch is off.  
Lift the rubber stopper on the  
compressor.  
Remove the power plug from  
the compressor.  
7
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608  
7-2. Steps to take in an emergency  
8
Connect the power plug to the  
power outlet socket. (P. 462)  
9
Connect the bottle to the com-  
pressor.  
As shown in the illustration, insert  
the bottle securely into the com-  
pressor until the upper side of the  
mark on the bottle is aligned with  
the upper end of the notch.  
10  
Attach the sticker provided with  
the tire puncture repair kit to a  
position easily seen from the  
driver’s seat.  
(U.S.A.)  
(Canada)  
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609  
7-2. Steps to take in an emergency  
11  
Check the specified tire inflation  
pressure.  
Tire inflation pressure is specified  
on the label on the driver’s side  
pillar as shown. (P. 660)  
12  
13  
Start the hybrid system. (P. 241)  
To inject the sealant and inflate  
the tire, turn the compressor  
switch on.  
7
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610  
7-2. Steps to take in an emergency  
14  
Inflate the tire until the specified air pressure is reached.  
1
The sealant will be injected  
and the pressure will spike to  
between 44 psi (300 kPa,  
2
3.0 kgf/cm  
or bar) and  
2
58 psi (400 kPa, 4.0 kgf/cm  
or bar), then gradually  
decrease.  
2
The air pressure gauge will  
display the actual tire infla-  
tion pressure about 1 to 5  
minutes after the switch is  
turned on.  
• Turn the compressor switch  
off and then check the tire  
inflation pressure. Being  
careful not to over inflate,  
check and repeat the inflation  
procedure until the specified  
tire inflation pressure is  
reached.  
• The tire can be inflated for about 5 to 20 minutes (depending on  
the outside temperature). If the tire inflation pressure is still lower  
than the specified point after inflation for 25 minutes, the tire is  
too damaged to be repaired. Turn the compressor switch off and  
contact your Toyota dealer.  
• If the tire inflation pressure exceeds the specified air pressure, let  
out some air to adjust the tire inflation pressure. (P. 613, 660)  
15  
16  
With the compressor switch off, disconnect the hose from the valve  
on the tire and then pull out the power plug from the power outlet  
socket.  
Some sealant may leak when the hose is removed.  
Install the valve cap onto the valve of the emergency repaired tire.  
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7-2. Steps to take in an emergency  
17  
Attach the air release cap to the  
end of the hose.  
If the air release cap is not  
attached, the sealant may leak  
and the vehicle may get dirty.  
18  
19  
20  
Temporarily store the bottle in the luggage compartment while it is  
connected to the compressor.  
To spread the liquid sealant evenly within the tire, immediately drive  
safely for about 3 miles (5 km) below 50 mph (80 km/h).  
After driving, stop your vehicle  
in a safe place on a hard, flat  
surface and reconnect the  
repair kit.  
Remove the air release cap from  
the hose before reconnecting the  
hose.  
21  
Turn the compressor switch on and wait for several seconds, then  
turn it off. Check the tire inflation pressure.  
7
1
If the tire inflation pressure is  
under  
1.3 kgf/cm  
19 psi  
(130 kPa,  
2
or bar): The  
puncture cannot be repaired.  
Contact your Toyota dealer.  
2
3
If the tire inflation pressure is  
19 psi (130 kPa, 1.3 kgf/cm  
2
or bar) or higher, but less  
than the specified air pres-  
22  
sure: Proceed to step  
.
If the tire inflation pressure is the specified air pressure (P. 660):  
23  
Proceed to step  
.
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612  
7-2. Steps to take in an emergency  
22  
Turn the compressor switch on to inflate the tire until the specified  
air pressure is reached. Drive for about 3 miles (5 km) and then  
20  
perform step  
.
23  
Attach the air release cap to the  
end of the hose.  
If the air release cap is not  
attached, the sealant may leak  
and the vehicle may get dirty.  
24  
25  
Store the bottle in the luggage compartment while it is connected to  
the compressor.  
Taking precautions to avoid sudden braking, sudden acceleration  
and sharp turns, drive carefully at under 50 mph (80 km/h) to the  
nearest Toyota dealer that is less than 62 miles (100 km) away for  
tire repair or replacement.  
When having the tire repaired or replaced, make sure to tell the Toyota  
dealer that the sealant is injected.  
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613  
7-2. Steps to take in an emergency  
■If the tire is inflated to more than the specified air pressure  
1
Disconnect the hose from the valve.  
2
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.  
3
Disconnect the hose from the valve, remove the air release cap from  
the hose and then reconnect the hose.  
4
Turn the compressor switch on and wait for several seconds, and then  
turn it off. Check that the air pressure indicator shows the specified air  
pressure. (P. 660)  
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.  
7
■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.  
PRIUS_OM_OM47D44U_(U)  
614  
7-2. Steps to take in an emergency  
■Emergency tire puncture repair kit  
●The emergency tire puncture repair kit is for filling the car tire with air.  
●The sealant has a limited life span. The expiry date is marked on the  
bottle. The sealant should be replaced before the expiry date. Contact  
your Toyota dealer for replacement.  
●The sealant stored in the emergency tire puncture repair kit can be used  
only once to temporarily repair a single tire. If the sealant in the bottle  
and other parts of the kit have been used and need to be replaced, con-  
tact your Toyota dealer.  
●The compressor can be used repeatedly.  
●The sealant can be used when the outside temperature is from -40°F  
(-40°C) to 140°F (60°C).  
●The kit is exclusively designed for size and type of tires originally  
installed on your vehicle. Do not use it for tires that a different size than  
the original ones, or for any other purposes.  
●If the sealant gets on your clothes, it may stain.  
●If the sealant adheres to a wheel or the surface of the vehicle body, the  
stain may not be removable if it is not cleaned at once. Immediately wipe  
away the sealant with a wet cloth.  
●During operation of the repair kit, a loud operation noise is produced.  
This does not indicate a malfunction.  
●Do not use to check or to adjust the tire pressure.  
PRIUS_OM_OM47D44U_(U)  
615  
7-2. Steps to take in an emergency  
WARNING  
■Do not drive the vehicle with a flat tire  
Do not continue driving with a flat tire.  
Driving even a short distance with a flat tire can damage the tire and the  
wheel beyond repair.  
Driving with a flat tire may cause a circumferential groove on the side  
wall. In such a case, the tire may explode when using a repair kit.  
■Caution while driving  
●Store the repair kit in the luggage compartment.  
Injuries may result in the event of an accident or sudden braking.  
●The repair kit is exclusively only for your vehicle.  
Do not use repair kit on other vehicles, which could lead to an accident  
causing death or serious injury.  
●Do not use repair kit for tires that are different size than the original  
ones, or for any other purpose. If the tires have not been completely  
repaired, it could lead to an accident causing death or serious injury.  
■Precautions for use of the sealant  
●Ingesting the sealant is hazardous to your health. If you ingest sealant,  
consume as much water as possible, and then immediately consult a  
doctor.  
●If sealant gets in eyes or adheres to skin, immediately wash it off with  
water. If discomfort persists, consult a doctor.  
7
PRIUS_OM_OM47D44U_(U)  
616  
7-2. Steps to take in an emergency  
WARNING  
■When fixing the flat tire  
●Stop your vehicle in a safe and flat area.  
●Do not touch the wheels or the area around the brakes immediately  
after the vehicle has been driven.  
After the vehicle has been driven, the wheels and the area around the  
brakes may be extremely hot. Touching these areas with hands, feet or  
other body parts may result in burns.  
●Connect the valve and hose securely with the tire installed on the vehi-  
cle. If the hose is not properly connected to the valve, air leakage may  
occur as sealant may be sprayed out.  
●If the hose comes off the valve while inflating the tire, there is a risk  
that the hose will move abruptly due to air pressure.  
●After inflation of the tire has completed, the sealant may splatter when  
the hose is disconnected or some air is let out of the tire.  
●Follow the operation procedure to repair the tire. If the procedures not  
followed, the sealant may spray out.  
●Keep back from the tire while it is being repaired, as there is a chance  
of it bursting while the repair operation is being performed. If you  
notice any cracks or deformation of the tire, turn off the compressor  
switch and stop the repair operation immediately.  
●The repair kit may overheat if operated for a long period of time. Do not  
operate the repair kit continuously for more than 40 minutes.  
●Parts of the repair kit become hot during operation. Be careful handling  
the repair kit during and after operation. Do not touch the metal part  
connecting the bottle and the compressor. It will be extremely hot.  
●Do not attach the vehicle speed warning sticker to an area other than  
the one indicated. If the sticker is attached to an area where an SRS  
airbag is located, such as the pad of the steering wheel, it may prevent  
the SRS airbag from operating properly.  
PRIUS_OM_OM47D44U_(U)  
617  
7-2. Steps to take in an emergency  
WARNING  
■Driving to spread the liquid sealant evenly  
Observe the following precautions to reduce the risk of accidents.  
Failing to do so may result in a loss of vehicle control and cause death  
or serious injury.  
●Drive the vehicle carefully at a low speed. Be especially careful when  
turning and cornering.  
●If the vehicle does not drive straight or you feel a pull through the  
steering wheel, stop the vehicle and check the following.  
• Tire condition. The tire may have separated from the wheel.  
• Tire inflation pressure. If the tire inflation pressure is 19 psi  
2
(130 kPa, 1.3 kgf/cm or bar) or less, the tire may be severely dam-  
aged.  
NOTICE  
■When performing an emergency repair  
●A tire should only be repaired with the emergency tire puncture repair  
kit if the damage is caused by a sharp object such as nail or screw  
passing through the tire tread.  
Do not remove the sharp object from the tire. Removing the object may  
widen the opening and disenable emergency repair with the repair kit.  
●The repair kit is not waterproof. Make sure that the repair kit is not  
exposed to water, such as when it is being used in the rain.  
●Do not put the repair kit directly onto dusty ground such as sand at the  
side of the road. If the repair kit vacuums up dust etc., a malfunction  
may occur.  
7
■Precautions for the emergency tire puncture repair kit  
●The repair kit power source should be 12 V DC suitable for vehicle  
use. Do not connect the repair kit to any other source.  
●If fuel splatters on the repair kit, the repair kit may deteriorate. Take  
care not to allow fuel to contact it.  
●Place the repair kit in a storage to prevent it from being exposed to dirt  
or water.  
●Store the repair kit in the luggage compartment out of reach of chil-  
dren.  
●Do not disassemble or modify the repair kit. Do not subject parts such  
as the air pressure indicator to impacts. This may cause a malfunction.  
PRIUS_OM_OM47D44U_(U)  
618  
7-2. Steps to take in an emergency  
NOTICE  
■To avoid damage to the tire pressure warning valves and transmit-  
ters  
When a tire is repaired with liquid sealants, the tire pressure warning  
valve and transmitter may not operate properly. If a liquid sealant is  
used, contact your Toyota dealer or other qualified service shop as soon  
as possible. After use of liquid sealant, make sure to replace the tire  
pressure warning valve and transmitter when repairing or replacing the  
tire. (P. 522)  
PRIUS_OM_OM47D44U_(U)  
619  
7-2. Steps to take in an emergency  
If you have a flat tire (vehicles with spare  
tire)  
Your vehicle is equipped with a spare tire. The flat tire can be  
replaced with the spare tire.  
For details about tires: P. 520  
WARNING  
■If you have a flat tire  
Do not continue driving with a flat tire.  
Driving even a short distance with a flat tire can damage the tire and the  
wheel beyond repair, which could result in an accident.  
Before jacking up the vehicle  
● Stop the vehicle in a safe place on a hard, flat surface.  
● Set the parking brake.  
● Shift the shift position to P.  
● Stop the hybrid system.  
● Turn on the emergency flashers. (P. 568)  
7
PRIUS_OM_OM47D44U_(U)  
620  
7-2. Steps to take in an emergency  
Location of the spare tire, jack and tools  
Vehicles with compact spare tire  
1
2
3
4
5
Wheel nut wrench  
Jack handle  
Jack  
Spare tire  
Towing eyelet  
PRIUS_OM_OM47D44U_(U)  
621  
7-2. Steps to take in an emergency  
Vehicles with full-size spare tire  
1
2
3
4
5
Jack handle  
Towing eyelet  
Jack  
Wheel nut wrench  
Spare tire  
7
PRIUS_OM_OM47D44U_(U)  
622  
7-2. Steps to take in an emergency  
WARNING  
■Using the tire jack  
Observe the following precautions.  
Improper use of the tire jack may cause the vehicle to suddenly fall off  
the jack, leading to death or serious injury.  
●Only use the tire jack that comes with this vehicle for replacing a flat  
tire.  
Do not use it on other vehicles, and do not use other tire jacks for  
replacing tires on this vehicle.  
●Do not raise the vehicle while someone is inside.  
●Do not use the tire jack for any purpose other than replacing tires or  
installing and removing tire chains.  
●Put the jack properly in its jack point.  
(P. 626)  
●Do not put any part of your body under the vehicle while it is supported  
by the jack.  
●Do not start the hybrid system or drive the vehicle while the vehicle is  
supported by the jack.  
●When raising the vehicle, do not put an object on or under the jack.  
●Do not raise the vehicle to a height greater than that required to  
replace the tire.  
●Use a jack stand if it is necessary to get under the vehicle.  
●When lowering the vehicle, make sure that there is no-one near the  
vehicle. If there are people nearby, warn them vocally before lowering.  
PRIUS_OM_OM47D44U_(U)  
623  
7-2. Steps to take in an emergency  
Taking out the jack  
1
Pull up the handle to open the  
deck board.  
2
Secure the deck board using  
the grocery bag hooks.  
(P. 457)  
3
Unhook the tightening strap  
and take out the jack.  
7
PRIUS_OM_OM47D44U_(U)  
624  
7-2. Steps to take in an emergency  
Taking out the spare tire  
1
Open and secure the deck board. (P. 623)  
2
Remove the tray.  
Vehicles with compact spare tire: If the luggage cover is stowed  
(P. 460), remove both the tray and luggage cover.  
Vehicles with compact spare Vehicles with full-size spare  
tire  
tire  
3
Loosen the center fastener that  
secures the spare tire.  
WARNING  
■When storing the spare tire  
Be careful not to catch fingers or other body parts between the spare  
tire and the body of the vehicle.  
PRIUS_OM_OM47D44U_(U)  
625  
7-2. Steps to take in an emergency  
Replacing a flat tire  
1
Chock the tires.  
Flat tire  
Wheel chock positions  
Behind the rear right-hand side tire  
Behind the rear left-hand side tire  
Left-hand side  
Front  
Rear  
Right-hand side  
Left-hand side  
Right-hand side  
In front of the front right-hand side tire  
In front of the front left-hand side tire  
2
For vehicles with the wheel  
ornament: Remove the wheel  
ornament using the wrench.  
To prevent damage, cover the  
tip of the wrench with a rag.  
7
3
Slightly loosen the wheel nuts  
(one turn).  
PRIUS_OM_OM47D44U_(U)  
626  
7-2. Steps to take in an emergency  
4
Turn the tire jack portion  
A
by  
hand until the center of the  
recessed portion of the jack is  
in contact with the center of the  
jack point.  
Jack point  
5
6
7
Assemble the jack handle and  
the wheel nut wrench as shown  
in the illustration.  
Raise the vehicle until the tire is  
slightly raised off the ground.  
Remove all the wheel nuts and  
the tire.  
When resting the tire on the  
ground, place the tire so that the  
wheel design faces up to avoid  
scratching the wheel surface.  
PRIUS_OM_OM47D44U_(U)  
627  
7-2. Steps to take in an emergency  
WARNING  
■Replacing a flat tire  
●Do not touch the disc wheels or the area around the brakes immedi-  
ately after the vehicle has been driven.  
After the vehicle has been driven the disc wheels and the area around  
the brakes will be extremely hot. Touching these areas with hands, feet  
or other body parts while changing a tire, etc. may result in burns.  
●Failure to follow these precautions could cause the wheel nuts to  
loosen and the tire to fall off, resulting in death or serious injury.  
• Have the wheel nuts tightened with a torque wrench to 76 ft•lbf  
(103 N•m, 10.5 kgf•m) as soon as possible after changing wheels.  
• When installing a tire, only use wheel nuts that have been specifi-  
cally designed for that wheel.  
• If there are any cracks or deformations in the bolt screws, nut  
threads or bolt holes of the wheel, have the vehicle inspected by  
your Toyota dealer.  
• When installing the wheel nuts, be sure to install the wheel nuts with  
the tapered ends facing inward. (P. 534)  
7
PRIUS_OM_OM47D44U_(U)  
628  
7-2. Steps to take in an emergency  
Installing the spare tire  
1
Remove any dirt or foreign mat-  
ter from the wheel contact sur-  
face.  
If foreign matter is on the wheel  
contact surface, the wheel nuts  
may loosen while the vehicle is in  
motion, causing the tire to come  
off.  
2
Install the spare tire and loosely tighten each wheel nut by hand by  
approximately the same amount.  
When replacing an aluminum  
wheel with steel wheel  
Tapered portion  
a
(including a compact spare  
tire), tighten the wheel nuts until  
the tapered portion comes into  
loose contact with the disc  
wheel seat.  
Disc wheel seat  
Disc wheel  
When replacing an aluminum  
wheel with an aluminum wheel,  
turn the wheel nuts until the  
washers come into contact with  
the disc wheel.  
Washer  
PRIUS_OM_OM47D44U_(U)  
629  
7-2. Steps to take in an emergency  
3
4
5
Lower the vehicle.  
Firmly tighten each wheel nut  
two or three times in the order  
shown in the illustration.  
Tightening torque:  
76 ft•lbf (103 N•m, 10.5 kgf•m)  
For vehicles with the wheel  
ornament: When reinstalling an  
original wheel or installing a full-  
size spare tire, reinstall the  
wheel ornament.*  
Align the cutout of the wheel  
ornament with the valve stem as  
shown.  
7
*: The wheel ornament cannot be  
installed on the compact spare  
tire.  
6
Stow the flat tire, tire jack and all tools.  
PRIUS_OM_OM47D44U_(U)  
630  
7-2. Steps to take in an emergency  
■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. 660)  
■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:  
1
Replace a rear tire with the compact spare tire.  
2
Replace the flat front tire with the tire removed from the rear of the vehi-  
cle.  
3
Fit tire chains to the front tires.  
■Jack point  
The mark indicating the jack point is  
stamped on the underside of the vehi-  
cle.  
■Storing the jack  
Place the jack in the same direction as  
the mark next to the storage space.  
PRIUS_OM_OM47D44U_(U)  
631  
7-2. Steps to take in an emergency  
WARNING  
■When using the compact spare tire (if equipped)  
●Remember that the spare tire provided is specifically designed for use  
with your vehicle. Do not use your spare tire on another vehicle.  
●Do not use more than one compact spare tire simultaneously.  
●Replace the spare tire with a standard tire as soon as possible.  
●Avoid sudden acceleration, abrupt steering, sudden braking and shift-  
ing operations that cause sudden engine braking.  
■When the compact spare tire is attached (if equipped)  
The vehicle speed may not be correctly detected, and the following sys-  
tems may not operate correctly:  
• ABS & Brake assist  
• VSC  
• TRAC  
• Cruise control*  
• BSM (Blind Spot Monitor)*  
• Intuitive parking assist*  
• Parking Support Brake function*  
• S-APGS (Simple Advanced  
Parking Guidance System)*  
• EPS  
• Automatic High Beam*  
• PCS (Pre-Collision System)*  
• LDA (Lane Departure Alert with • Rear view monitor system  
steering control)*  
• Navigation system*  
• Dynamic radar cruise control  
with full-speed range*  
Also, not only can the following system not be utilized fully, but it may  
even negatively affect the drive-train components:  
• E-Four (Electric Four wheel drive system)*  
*: If equipped  
7
■Speed limit when using the compact spare tire (if equipped)  
Do not drive at speeds in excess of 50 mph (80 km/h) when a compact  
spare tire is installed on the vehicle.  
The compact spare tire is not designed for driving at high speeds. Fail-  
ure to observe this precaution may lead to an accident causing death or  
serious injury.  
■After using the tools and jack  
Before driving, make sure all the tools and jack are securely in place in  
their storage location to reduce the possibility of personal injury during a  
collision or sudden braking.  
PRIUS_OM_OM47D44U_(U)  
632  
7-2. Steps to take in an emergency  
NOTICE  
■Be careful when driving over bumps with the compact spare tire  
installed on the vehicle. (if equipped)  
The vehicle height may become lower when driving with the compact  
spare tire, compared to when driving with standard tires. Be careful  
when driving over uneven road surfaces.  
■Driving with tire chains and the compact spare tire (if equipped)  
Do not fit tire chains to the compact spare tire.  
Tire chains may damage the vehicle body and adversely affect driving  
performance.  
■When replacing the tires  
When removing or fitting the wheels, tires or the tire pressure warning  
valve and transmitter, contact your Toyota dealer as the tire pressure  
warning valve and transmitter may be damaged if not handled correctly.  
■Handling the decorative resin parts (for vehicles equipped with 17-  
inch wheels)  
P. 488  
PRIUS_OM_OM47D44U_(U)  
633  
7-2. Steps to take in an emergency  
If the hybrid system will not start  
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. 241)  
One of the following may be the cause of the problem:  
● The electronic key may not be functioning properly.* (P. 635)  
● There may not be sufficient fuel in the vehicle’s tank.  
Refuel the vehicle. (P. 89)  
● There may be a malfunction in the immobilizer system.* (P. 94)  
● There may be a malfunction in the shift control system.*  
(P. 245, 597)  
● 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. 634)  
● There is a possibility that the temperature of the hybrid battery  
(traction battery) is extremely low (approximately below -22°F  
[-30°C]). (P. 89, 244)  
7
*: It may not be possible to shift the shift position other than P.  
The interior lights and headlights are dim, or the horn does not  
sound or sounds at a low volume.  
One of the following may be the cause of the problem:  
● The 12-volt battery may be discharged. (P. 638)  
● The 12-volt battery terminal connections may be loose or corroded.  
(P. 512)  
PRIUS_OM_OM47D44U_(U)  
634  
7-2. Steps to take in an emergency  
The interior lights and headlights do not turn on, or the horn  
does not sound.  
One of the following may be the cause of the problem:  
● The 12-volt battery may be discharged. (P. 638)  
● One or both of the 12-volt battery terminals may be disconnected.  
(P. 512)  
Contact your Toyota dealer if the problem cannot be repaired, or if repair  
procedures are unknown.  
Emergency start function  
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.  
1
Set the parking brake.  
2
Turn the power switch to ACCESSORY mode.  
3
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 your  
Toyota dealer.  
PRIUS_OM_OM47D44U_(U)  
635  
7-2. Steps to take in an emergency  
If the electronic key does not operate  
properly  
If communication between the electronic key and vehicle is  
interrupted (P. 194) or the electronic key cannot be used  
because the battery is depleted, the smart key 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 procedure below.  
Locking and unlocking the doors  
Use the mechanical key (P. 177) in order to perform the following  
operations:  
1
2
Locks all the doors  
Closes the windows and moon  
roof*1 (turn and hold)*2  
3
Unlocks the door  
Turning the key rearward unlocks  
the driver’s door. Turning the key  
once again within  
3
seconds  
unlocks the other doors.  
Opens the windows and moon roof*1 (turn and hold)*2  
7
4
*1: If equipped  
*2: This setting must be customized at your Toyota dealer. (P. 678)  
PRIUS_OM_OM47D44U_(U)  
636  
7-2. Steps to take in an emergency  
Starting the hybrid system  
1
Depress the brake pedal.  
2
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 key system is  
deactivated in customization set-  
ting, the power switch will turn to  
ACCESSORY mode.  
3
Firmly depress the brake pedal  
and check that  
is shown  
on the multi-information display.  
4
Press the power switch.  
In the event that the hybrid system still cannot be operated, contact  
your Toyota dealer.  
PRIUS_OM_OM47D44U_(U)  
637  
7-2. Steps to take in an emergency  
■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 immediately when the battery is depleted.  
(P. 548)  
■Changing power switch modes  
3
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. 243)  
■When the electronic key does not work properly  
●Make sure that the smart key system has not been deactivated in the cus-  
tomization setting. If it is off, turn the function on.  
(Customizable features: P. 678)  
●Check if battery-saving mode is set. If it is set, cancel the function.  
(P. 194)  
WARNING  
■When using the mechanical key and operating the power windows or  
moon roof (if equipped)  
Operate the power window or moon roof after checking to make sure that  
there is no possibility of any passenger having any of their body parts  
caught in the window or moon roof.  
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 or moon  
roof.  
7
PRIUS_OM_OM47D44U_(U)  
638  
7-2. Steps to take in an emergency  
If the 12-volt battery is discharged  
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 your Toyota dealer or a qualified repair shop.  
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.  
1
Open the hood. (P. 503)  
2
Remove the engine cover.  
Pull up the both ends of the cover  
vertically.  
PRIUS_OM_OM47D44U_(U)  
639  
7-2. Steps to take in an emergency  
3
Connect the jumper cables according to the following procedure:  
1
Connect a positive jumper cable clamp to the positive (+) battery  
terminal on your vehicle.  
2
3
4
Connect the clamp on the other end of the positive cable to the  
positive (+) battery terminal on the second vehicle.  
Connect a negative cable clamp to the negative (-) battery termi-  
nal on the second vehicle.  
Connect the clamp at the other end of the negative cable to a  
solid, stationary, unpainted metallic point away from the 12-volt  
battery and any moving parts, as shown in the illustration.  
4
1
2
3
7
4
5
6
Start the engine of the second vehicle. Increase the engine speed  
slightly and maintain at that level for approximately 5 minutes to  
recharge the 12-volt battery of your vehicle.  
Maintain the engine speed of the second vehicle and start the  
hybrid system of your vehicle by turning the power switch to ON  
mode.  
Make sure the “READY” indicator comes on. If the indicator light  
does not come on, contact your Toyota dealer.  
PRIUS_OM_OM47D44U_(U)  
640  
7-2. Steps to take in an emergency  
7
Once the hybrid system has started, remove the jumper cables in  
the exact reverse order from which they were connected.  
8
To install the engine cover, conduct the removal procedure in  
reverse. After installing, check that the fixed pins are inserted  
securely.  
Once the hybrid system starts, have the vehicle inspected at your  
Toyota dealer as soon as possible.  
■When opening the cover of the positive (+) battery terminal  
P. 513  
■Starting the hybrid system when the 12-volt battery is discharged  
The hybrid system cannot be started by push-starting.  
■To prevent 12-volt battery discharge  
●Turn off the headlights and the audio system while the hybrid system is off.  
●Turn off any unnecessary electrical components when the vehicle is running  
at a low speed for an extended period, such as in heavy traffic.  
■When the 12-volt battery is removed or discharged  
●Information stored in the ECU is cleared. When the 12-volt battery is  
depleted, have the vehicle inspected at your Toyota dealer.  
●Some systems may require initialization. (P. 688)  
■When removing the 12-volt battery terminals  
When the 12-volt battery terminals are removed, the information stored in the  
ECU is cleared. Before removing the 12-volt battery terminals, contact your  
Toyota dealer.  
■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.)  
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641  
7-2. Steps to take in an emergency  
■When recharging or replacing the 12-volt battery  
●In some cases, it may not be possible to unlock the doors using the smart  
key system when the 12-volt battery is discharged. Use the wireless remote  
control or the mechanical key to lock or unlock the doors.  
●The hybrid system may not start on the first attempt after the 12-volt battery  
has recharged but will start normally after the second attempt. This is not a  
malfunction.  
●The power switch mode is memorized by the vehicle. When the 12-volt bat-  
tery is reconnected, the system will return to the mode it was in before the  
12-volt battery was discharged. Before disconnecting the 12-volt battery,  
turn the power switch off.  
If you are unsure what mode the power switch was in before the 12-volt bat-  
tery discharged, be especially careful when reconnecting the 12-volt battery.  
●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. 572)  
■When replacing the 12-volt battery  
●Use a 12-volt battery that conforms to European regulations.  
●Use a 12-volt battery that the case size is same as the previous one (LN1),  
20 hour rate capacity (20HR) is equivalent (45Ah) or greater, and perfor-  
mance rating (CCA) is equivalent (295A) or greater.  
• If the sizes differ, the 12-volt battery cannot be properly secured.  
• If the 20 hour rate capacity is low, even if the time period where the vehi-  
cle is not used is a short time, the 12-volt battery may discharge and the  
hybrid system may not be able to start.  
●For details, consult your Toyota dealer.  
7
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7-2. Steps to take in an emergency  
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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7-2. Steps to take in an emergency  
NOTICE  
■When handling jumper cables  
When connecting the jumper cables, ensure that they do not become entan-  
gled in the cooling fans, etc.  
7
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644  
7-2. Steps to take in an emergency  
If your vehicle overheats  
The following may indicate that your vehicle is overheating.  
● The high coolant temperature warning light (P. 582) comes on  
or flashes, or a loss of hybrid system power is experienced. (For  
example, the vehicle speed does not increase.)  
● “Hybrid System Overheated” is shown on the multi-information  
display.  
● Steam comes out from under the hood.  
Correction procedures  
■ If the high coolant temperature warning light comes on or  
flashes  
1
Stop the vehicle in a safe place and turn off the air conditioning  
system, and then stop the hybrid system.  
2
If you see steam:  
Carefully lift the hood after the steam subsides.  
If you do not see steam:  
Carefully lift the hood.  
3
After the hybrid system has cooled down sufficiently, inspect the  
hoses and radiator core (radiator) for any leaks.  
1
2
Radiator  
Cooling fans  
If a large amount of coolant  
leaks, immediately contact  
your Toyota dealer.  
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7-2. Steps to take in an emergency  
4
The coolant level is satisfactory if it is between the “FULL” and  
“LOW” lines on the reservoir.  
1
Reservoir  
“FULL” line  
“LOW” line  
2
3
5
Add coolant if necessary.  
Water can be used in an emer-  
gency if coolant is unavailable.  
6
Start the hybrid system and turn the air conditioning system on to  
check that the radiator cooling fans operate and to check for  
coolant leaks from the radiator or hoses.  
The fans operate when the air conditioning system is turned on immedi-  
ately after a cold start. Confirm that the fans are operating by checking  
the fan sound and air flow. If it is difficult to check these, turn the air con-  
ditioning system on and off repeatedly. (The fans may not operate in  
freezing temperatures.)  
7
7
If the fans are not operating:  
Stop the hybrid system immediately and contact your Toyota  
dealer.  
If the fans are operating:  
Have the vehicle inspected at the nearest Toyota dealer.  
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646  
7-2. Steps to take in an emergency  
■ If “Hybrid System Overheated” is shown on the multi-informa-  
tion display  
1
Stop the vehicle in a safe place.  
2
Stop the hybrid system and carefully lift the hood.  
3
After the hybrid system has cooled down, inspect the hoses and  
radiator core (radiator) for any leaks.  
1
2
Radiator  
Cooling fans  
If a large amount of coolant  
leaks, immediately contact  
your Toyota dealer.  
4
The coolant level is satisfactory if it is between the “FULL” and  
“LOW” lines on the reservoir.  
1
Reservoir  
“FULL” line  
“LOW” line  
2
3
5
Add coolant if necessary.  
Water can be used in an emer-  
gency if coolant is unavailable.  
If water was added in an emer-  
gency, have the vehicle inspected  
at your Toyota dealer as soon as  
possible.  
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647  
7-2. Steps to take in an emergency  
6
After stopping the hybrid system and waiting for 5 minutes or  
more, start the hybrid system again and check if “Hybrid System  
Overheated” is shown on the multi-information display.  
If the message does not disappear:  
Stop the hybrid system and contact your Toyota dealer.  
If the message is not displayed:  
The hybrid system temperature has dropped and the vehicle may  
be driven normally.  
However, if the message appears again frequently, contact your Toyota  
dealer.  
WARNING  
■To prevent an accident or injury when inspecting under the hood of  
your vehicle  
Observe the following precautions.  
Failure to do so may result in serious injury such as burns.  
●If steam is seen coming from under the hood, do not open the hood until  
the steam has subsided. The engine compartment may be very hot.  
●After the hybrid system has been turned off, check that the “Accessory”,  
“Ignition ON” or mileage display (P. 116) on the main display and the  
“READY” indicator are off.  
When the hybrid system is operating, the gasoline engine may automati-  
cally start, or the cooling fans may suddenly operate even if the gasoline  
engine stops. Do not touch or approach rotating parts such as the fan,  
which may lead to fingers or clothing (especially a tie, a scarf or a muffler)  
getting caught, resulting in serious injury.  
7
●Do not loosen the coolant reservoir caps while the hybrid system and radi-  
ator are hot.  
High temperature steam or coolant could spray out.  
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7-2. Steps to take in an emergency  
NOTICE  
■When adding engine/power control unit coolant  
Add coolant slowly after the hybrid system has cooled down sufficiently.  
Adding cool coolant to a hot hybrid system too quickly can cause damage to  
the hybrid system.  
■To prevent damage to the cooling system  
Observe the following precautions:  
●Avoid contaminating the coolant with foreign matter (such as sand or dust  
etc.).  
●Do not use any coolant additive.  
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649  
7-2. Steps to take in an emergency  
If the vehicle becomes stuck  
Carry out the following procedures if the tires spin or the vehicle  
becomes stuck in mud, dirt or snow:  
1
Set the parking brake and shift the shift position to P. Stop the  
hybrid system.  
2
Remove the mud, snow or sand from around the front wheels.  
3
Place wood, stones or some other material under the front wheels  
to help provide traction.  
4
Restart the hybrid system.  
5
Shift the shift position to D or R and release the parking brake.  
Then, while exercising caution, depress the accelerator pedal.  
■When it is difficult to free the vehicle  
Press  
to turn off TRAC. (P. 410)  
7
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7-2. Steps to take in an emergency  
WARNING  
■When attempting to free a stuck vehicle  
If you choose to push the vehicle back and forth to free it, make sure the  
surrounding area is clear to avoid striking other vehicles, objects or people.  
The vehicle may also lunge forward or lunge back suddenly as it becomes  
free. Use extreme caution.  
■When changing the shift position  
Be careful not to change the shift position with the accelerator pedal  
depressed.  
This may lead to unexpected rapid acceleration of the vehicle that may  
cause an accident resulting in death or serious injury.  
NOTICE  
■To avoid damage to the hybrid transmission and other components  
●Avoid spinning the front wheels and depressing the accelerator pedal  
more than necessary.  
●If the vehicle remains stuck even after these procedures are performed,  
the vehicle may require towing to be freed.  
PRIUS_OM_OM47D44U_(U)  

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