Page 596 of 688
596 5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47856U_(U)
■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. 496)
■ Changing “POWER” switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and
press the “POWER” switch.
The hybrid system does not start and modes will be changed each time the
switch is pressed. ( P. 242)
Page 604 of 688

604 5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47856U_(U)
The coolant level is satisfactory if
it is between the “FULL” and
“LOW ” lines on the reservoir.Reservoir
“FULL”
“LOW ”
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 air conditioning system is turned on
immediately 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 conditioning system on and off repeatedly.
(The fans may not operate in freezing temperatures.)
If the fans are not operating: Stop the hybrid system im mediately and contact your
Toyota dealer.
If the fans are operating: Have the vehicle inspected at the nearest Toyota dealer.
ITO43P111
STEP 4
ITO52P130
STEP 5
6 ÉTAPE
STEP7
Page 606 of 688
606 5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47856U_(U)
Add coolant if necessary.
Water can be used in an emer-
gency if coolant is unavailable.
Start the hybrid system and check for the multi-information
display.
If the message does not disappear: Stop the hybrid system and c ontact your Toyota dealer.
If the message is not displayed: Have the vehicle inspected at the nearest Toyota dealer.
STEP 5
STEP 6
Page 607 of 688

5
When trouble arises
607
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47856U_(U)
CAUTION
■
To prevent an accident or injury when inspecting under the hood of
your vehicle
●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, caus-
ing serious injuries such as burns.
● After the hybrid system has been turned off, check that the indicator on the
“POWER” switch 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 fans,
which may lead to fingers or clothing (especially a tie, a scarf or a muffler)
getting caught, resulting in serious injury.
● Do not loosen the coolant reservoir cap while the hybrid system and radia-
tor are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.
NOTICE
■When adding engine/power control unit coolant
Wait until the hybrid system has cooled down before adding engine/power
control unit coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot hybrid sys-
tem 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 additives.
Page 608 of 688

608
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47856U_(U)
If the vehicle becomes stuck
CAUTION
■When attempting to free a stuck vehicle
If you choose to push the vehicle back and forth to free it, make sure the sur-
rounding 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.
Changing the shift position to any positions other than P or N may cause the
vehicle to accelerate abruptly, causing an accident and resulting in death or
serious injury.
Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:
Set the parking brake and shift the shift position to P. Stop
the hybrid system.
Remove the mud, snow or sand from around the stuck tire.
Place wood, stones or some other material under the tires
to help provide traction.
Restart the hybrid system.
Shift the shift position to D or R, release the parking brake
and carefully apply the accelerator to free the vehicle.STEP 1
STEP 2
STEP 3
STEP 4
STEP 5
Page 675 of 688

675
Alphabetical index
PRIUS PHV_OM_OM47856U_(U)
Daytime running light
system ................................... 297
Deck board............................... 405
Defogger
Rear window......................... 377
Side mirrors .......................... 377
Dimensions .............................. 614
Dinghy towing ......................... 357
Display Dynamic radar cruise control ................................ 314
Multi-information ................... 268
Warning messages............... 548
Do-it-yourself maintenance .... 442
Door lock Back door ............................. 144
Side doors ............................ 138
Smart key system ... .............. 112
Wireless remote control........ 136
Doors Back door ............................. 144
Door glasses ........................ 175
Door lock .............. 112, 136, 138
Rear door child-protector...... 139
Side doors ............................ 138
Driver’s seat belt reminder light ........................................ 539
Driving
Break-in tips ......................... 228
Correct posture..................... 185
Procedures ........................... 226
Winter driving tips ................. 351 Eco drive mode switch ............249
Electric power steering ...........330
Electronic key
If the electronic key does not operate properly..................594
Replacing battery ..................496
Emergency, in case of If a warning buzzer sounds ................................535
If a warning light turns on ......535
If the electronic key does not operate properly..................594
If the hybrid system will not start .....................................591
If the 12-volt battery is
discharged ..........................597
If you have a flat tire .............569
If you lose your keys .............593
If you think something is wrong ..................................534
If your vehicle becomes stuck ...................................608
If your vehicle has to be stopped in an
emergency ..........................610
If your vehicle needs to be towed ..................................527
If your vehicle overheats .......603
Emergency flashers Switch....................................526DE