2022 TOYOTA PRIUS PLUG-IN HYBRID Owners Manual

7038-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
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When trouble arises
If your vehicle overheats
QIf the high coolant temperature warning light comes on or
flashes
Stop the vehicle in a safe place and turn off the air condition ing
system, and then stop the hybrid system.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the hybrid system has cooled down sufficiently, inspect t he
hoses and radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
any authorized Toyota retailer
or Toyota authorized repairer,
or any reliable repairer.
The following may indicate that your vehicle is overheating.
O The high coolant temperature warning light (P. 659) comes on
or flashes, or a loss of hybrid system power is experienced. (F or
example, the vehicle speed does not increase.)
O “Hybrid System Overheated” is shown on the multi-information
display.
O Steam comes out from under the hood.
Correction procedures
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7048-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
The coolant level is satisfactory if it is between the “MAX” and
“MIN” lines on the reservoir.
Reservoir
“MAX” line
“MIN” line
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
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 temperature setting is adjusted to “L O” and
“A/C” switch ( ) is turned on immediately after a cold start. Co n-
firm that the fans are operating by checking the fan sound and air flow. If
it is difficult to check these, turn the “A/C” switch ( ) on and off
repeatedly. (The fans may not oper ate in freezing temperatures.)
If the fans are not operating:
Stop the hybrid system immediately and contact any authorized
Toyota retailer or Toyota authorized repairer, or any reliable
repairer.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repaire r.
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7058-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
8
When trouble arises
QIf “Hybrid System Overheated” is shown on the multi-informa-
tion display
Stop the vehicle in a safe place.
Stop the hybrid system and carefully lift the hood.
After the hybrid system has cooled down, inspect the hoses and
radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
any authorized Toyota retailer
or Toyota authorized repairer,
or any reliable repairer.
The coolant level is satisfactory if it is between the “FULL” a nd
“LOW” lines on the reservoir.
Reservoir
“FULL” line
“LOW” line
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 any authorized
Toyota retailer or Toyota autho-
rized repairer, or any reliable
repairer as soon as possible.
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7068-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
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 any authorized Toyota
retailer or Toyota authorized repairer, or any reliable repaire r.
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 any a utho-
rized Toyota retailer or Toyota authorized repairer, or any rel iable
repairer.
WARNING
Q 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.
O 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.
O After the hybrid system has been turned off, check that the “Accessory”,
“Ignition ON” or mileage display ( P. 213) on the main display and the
“READY” indicator are off.
When the hybrid system is operating, the gasoline engine may au tomati-
cally start, or the cooling fans may suddenly operate even if t he gasoline
engine stops. Do not touch or approach rotating parts such as t he fan,
which may lead to fingers or clothing (especially a tie, a scar f or a muffler)
getting caught, resulting in serious injury.
O 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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7078-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
8
When trouble arises
NOTICE
QWhen adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down suff iciently.
Adding cool coolant to a hot hybrid system too quickly can caus e damage to
the hybrid system.
Q To prevent damage to the cooling system
Observe the following precautions:
O Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).
O Do not use any coolant additive.

7088-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
If the vehicle becomes stuck
Set the parking brake and shift the shift position to P. Stop the
hybrid system.
Remove the mud, snow or sand from around the front wheels.
Place wood, stones or some other material under the front wheel s
to help provide traction.
Restart the hybrid system.
Shift the shift position to D or R and release the parking brak e.
Then, while exercising caution, depress the accelerator pedal.
Q When it is difficult to free the vehicle
Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Press to turn off TRC. ( P. 5 11 )Vehicles without pan-
oramic view monitor
Vehicles with panoramic
view monitor
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7098-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)
8
When trouble arises
WARNING
QWhen attempting to free a stuck vehicle
If you choose to push the vehicle back and forth to free it, ma ke sure the
surrounding area is clear to avoid striking other vehicles, obj ects or people.
The vehicle may also lunge forward or lunge back suddenly as it becomes
free. Use extreme caution.
Q When changing the shift position
Be careful not to change the shift position with the accelerato r pedal
depressed.
This may lead to unexpected rapid acceleration of the vehicle t hat may
cause an accident resulting in death or serious injury.
NOTICE
Q To avoid damage to the hybrid transmission and other components
O Avoid spinning the front wheels and depressing the accelerator pedal
more than necessary.
O If the vehicle remains stuck even after these procedures are performed,
the vehicle may require towing to be freed.

7108-2. Steps to take in an emergency
Prius Plug-in Hybrid_OM_OM47E75E_(EE)