cooling TOYOTA PRIUS PLUS 2015 User Guide

3977-2. Steps to take in an emergency
PRIUS +_OM_OM47B16E_(EE)
7
When trouble arises
Carrying out the corresponding action turns the messages off.
Other displayed messages
Displayed messageDetails/Actions
Maintenance of the hybrid battery (traction bat-
tery) cooling component is requiredThe filter may be clogged, the air intake vent
may be blocked or there may be a gap in the
duct.
→ Have maintenance performed on the hybrid
battery (traction battery) cooling compo-
nent at any authorized Toyota dealer or
repairer, or another duly qualified and
equipped professional.
Indicates that the EV drive mode is not available*
The reason the EV drive mode is not available
(the vehicle is idling, battery charge is low,
speed is higher than the EV drive mode operat-
ing speed range, accelerator pedal is
depressed too much) may be displayed.
A buzzer also sounds.
→ Use the EV drive mode when it becomes
available.

4437-2. Steps to take in an emergency
PRIUS +_OM_OM47B16E_(EE)
7
When trouble arises
WARNING
■ After recharging the 12-volt battery
Have the 12-volt battery inspected at any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional as soon as
possible.
If the 12-volt battery is deteriorating, continued use may cause the 12-volt
battery to emit a malodorous gas, which may be detrimental to the health of
passengers.
■ When replacing the 12-volt battery
→ P. 330
NOTICE
■ When handling jumper cables
When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fans, etc.
■ To prevent damaging the vehicle
The exclusive jump starting terminal is to be used when charging the 12-volt
battery from another vehicle in an emergency. It cannot be used to jump
start another vehicle.

4447-2. Steps to take in an emergency
PRIUS +_OM_OM47B16E_(EE)
If your vehicle overheats
■If the high coolant temperature warning light comes on or
flashesStop the vehicle in a safe place and turn off the air conditioning
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 the
hoses and radiator core (radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant
leaks, immediately contact
any authorized Toyota dealer
or repairer, or another duly
qualified and equipped pro-
fessional.
The following may indicate that your vehicle is overheating.● The high coolant temperature warning light ( →P. 380) comes on
or flashes, or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
● Vehicles without multi-information display: The hybrid system
overheat warning light ( →P. 380) comes on.
● Vehicles with multi-information display: The warning message
indicating overheat is shown on the multi-information display.
(→ P. 391)
● Steam comes out from under the hood.
Correction procedures
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4457-2. Steps to take in an emergency
PRIUS +_OM_OM47B16E_(EE)
7
When trouble arises
The coolant level is satisfactory if it is between the “FULL” and
“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.
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 condi tioning 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.)
If the fans are not operating:
Stop the hybrid system immediately and contact any authorized
Toyota dealer or repairer, or another duly qualified and equipped
professional.
If the fans are operating:
Have the vehicle inspected at the nearest any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
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4467-2. Steps to take in an emergency
PRIUS +_OM_OM47B16E_(EE)■
If the hybrid system overheat warning light comes on or the
warning message indicating overheat is shown on the multi-
information 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 dealer
or repairer, or another duly
qualified and equipped pro-
fessional.
The coolant level is satisfactory if it is between the “F” and “L”
lines on the reservoir.
Reservoir
“F” line
“L” 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 dealer or repairer, or
another duly qualified and
equipped professional as soon
as possible.
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4477-2. Steps to take in an emergency
PRIUS +_OM_OM47B16E_(EE)
7
When trouble arises
After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system and check for the instrument clus-
ter or multi-information display.
If the hybrid system overheat warning light does not turn off or
the message does not disappear:
Stop the hybrid system and contact any authorized Toyota dealer
or repairer, or another duly qualified and equipped professional.
If the hybrid system overheat warning light does not come on or
the message is not displayed:
The hybrid system temperature has dropped and the vehicle may
be driven normally.
However, if the warning light comes on again frequently or the message
appears again frequently, contact any authorized Toyota dealer or
repairer, or another duly qualified and equipped professional.
WARNING
■ 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 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 fan 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.
● Do not loosen the coolant reservoir cap while the hybrid system and radia-
tor are hot.
High temperature steam or coolant could spray out.
6

4487-2. Steps to take in an emergency
PRIUS +_OM_OM47B16E_(EE)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.

4588-1. Specifications
PRIUS +_OM_OM47B16E_(EE)
Cooling system
Capacity
Gasoline
engine
XWithout an exhaust heat recirculator sys-
tem
6.5 L (6.9 qt., 5.7 Imp.qt.)
XWith an exhaust heat recirculator system
6.9 L (7.3 qt., 6.1 Imp.qt.)
Power
control unit2.7 L (2.9 qt., 2.4 Imp.qt.)
Coolant type
Use either of the following: • “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-silicate, non-amine, non-
nitrite, and non-borate coolant with
long-life hybrid organic acid technology
Do not use plain water alone.
Ignition system (spark plug)
MakeDENSO SC20HR11 or SC16HR11
Gap1.1 mm (0.043 in.)
NOTICE
■ Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

4688-2. Customization
PRIUS +_OM_OM47B16E_(EE)■
Instrument cluster (
→P. 109)
*: The default setting varies according to countries.
■
Automatic air conditioning system ( →P. 270)
FunctionDefault
settingCustomized setting
Sensor sensitivity for
darkening the brightness
of the instrument cluster
depending on the outside
brightness
Standard-2 to 2––O
Sensor sensitivity for
returning the brightness of
the instrument cluster to
the original level depend-
ing on the outside bright-
ness
Standard-2 to 2––O
Language*English
French
O–OGerman
Spanish
Italian
Unitskm
(L/100km)km (km/L)OOO
Pop-up displayOnOffO–O
123
FunctionDefault settingCustomized setting
A/C auto switching opera-
tionOnOff––O
Heating/cooling operation
minimized in Eco drive
mode
OnOff––O
123

480Alphabetical index
PRIUS +_OM_OM47B16E_(EE)
Card holder............................... 288
CareAluminum wheels .................. 301
Exterior.................................. 300
Interior ................................... 305
Panoramic roof...................... 304
Radar sensor ................ 246, 260
Seat belts .............................. 306
Cargo hooks ............................. 289
CD player
*
Chains ....................................... 266
Child restraint system ............... 59 Baby seat definition................. 60
Baby seat installation .............. 68
Child seat definition................. 60
Child seat installation .............. 70
Installing CRS with ISOFIX rigid anchors ......................... 74
Installing CRS with seat belt ... 68
Installing CRS with top strap ... 76
Junior seats definition ............. 60
Junior seat installation ............ 72
Child safety ................................ 58 12-volt battery precautions.... 329
Airbag precautions .................. 48
Back door precautions .......... 148
Child restraint system ............. 59
How your child should wear the seat belt .......................... 42
Installing child restraints.......... 67
Power window lock switch .... 186
Power window precautions ... 188 Rear door child-protectors .... 145
Removed key battery
precautions......................... 352
Seat belt precautions .............. 44
Seat heater precautions........ 279
Child-protectors....................... 145
Cleaning Aluminum wheels.................. 301
Exterior ................................. 300
Interior................................... 305
Panoramic roof ..................... 304
Radar sensor ................ 246, 260
Seat belts .............................. 306
Climate remote control ........... 278
Clock ......................................... 293
Condenser ................................ 324
Console box ............................. 284
Coolant Capacity ................................ 458
Checking ............................... 323
Preparing and checking before winter....................... 265
Cooling system ........................ 323 Hybrid system overheating ... 444
Consumption screen ............... 131
Cruise control Cruise control........................ 227
Dynamic radar cruise control................................. 231
Warning messages ............... 391
Cup holders.............................. 285
Curtain shield airbags ............... 46
Customizable features ............ 465
C