Page 562 of 644

562 5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(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
STEP 6
STEP7
Page 564 of 644
564 5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(U)
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.
After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system again and check the multi-infor-
mation 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.
STEP 5
STEP 6
Page 565 of 644

5
When trouble arises
565
5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(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.
Page 567 of 644

5
When trouble arises
567
5-2. Steps to take in an emergency
PRIUS_OM_OM47A17U_DVD_(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 striki ng other vehicles, objects or people. The
vehicle may also lunge forward or lu nge 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 633 of 644

633
Alphabetical index
PRIUS_OM_OM47A17U_DVD_(U)
Eco drive mode switch ........... 207
Electric power steering........... 301
Electronic key
If the electronic key does not operate properly ................. 553
Replacing battery ................. 464
Emergency, in case of If a warning buzzer sounds ............................... 503
If a warning light turns on ..... 503
If the electronic key does not operate properly ................. 553
If the hybrid system will not start .................................... 550
If the 12-volt battery is
discharged ......................... 555
If you have a flat tire ............ 537
If you lose your keys............. 552
If you think something is wrong ................................. 502
If your vehicle becomes stuck................................... 567
If your vehicle has to be stopped in an
emergency ......................... 569
If your vehicle needs to be towed ................................. 495
If your vehicle overheats ...... 561
Emergency flashers Switch ................................... 494 Engine
Accessory mode....................197
Compartment ........................428
Hood......................................422
How to start the hybrid system ................................195
Identification number .............574
If the hybrid system will not start .....................................550
Ignition switch........................195
Overheating...........................561
“POWER” switch ...................195
Engine coolant Capacity ................................578
Checking ...............................433
Preparing and checking before winter .......................323
Engine/power control
unit coolantCapacity ................................578
Checking ...............................433
Preparing and checking before winter .......................323
Engine oil Capacity ................................575
Checking ...............................429
Preparing and checking before winter .......................323
Enhanced VSC .........................301
EPS ............................................301
EV drive mode switch ..............202
Event data recorder ...................25E