2014 TOYOTA PRIUS PLUG-IN coolant temperature

263
2-2. Instrument cluster
PRIUS PHV_OM_OM47856U_(U)
2
When driving
CAUTION
■To p r e v e n t a n a c c i d e n t
NOTICE
■To p r e v e n t d a m a g e t o t h e e n g i n e a n d i ts c o m p o n e n ts
The engine may be overheating if the high coolant temperature warning light
comes on or flashes. In this case, immediately stop the vehicle in a safe
place, and check the engine after it has cooled completely. (→P. 6 0 3 )
Do not place anything or attach a sticker
in front of the instrument cluster. The item
may obscure or obstruct the display, or
could reflect off the display, possibly
causing an accident.
Instrument cluster

468
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47856U_(U)
■Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology.
U.S.A.: “Toyota Super Long Life Coolant” is a mixture of 50% cool-
ant and 50% deionized water. (Minimum temperature: -31 °F
[-35 °C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55% cool-
ant and 45% deionized water. (Minimum temperature: -44 °F
[-42 °C])
For more details about coolant, contact your Toyota dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reser-
voir caps, drain cock and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.
CAUTION
■When the hybrid system is hot
Do not remove the engine/power control unit coolant reservoir caps.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.

534
5-1. Essential information
PRIUS PHV_OM_OM47856U_(U)
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably
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 engine coolant temperature warning light flashes or
comes on
■Audible symptoms
●Changes in exhaust sound
●Excessive tire squeal when cornering
●St rang e noises re la te d 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
●Ve h i c l e p u l l s h e a v i l y t o o n e s i d e w h e n b r a k i n g
●Ve h i c l e p u l l s h e a v i l y t o o n e s i d e w h e n d r i v i n g o n a l e v e l r o a d
●Loss of brake effectiveness, spongy feeling, pedal almost
touches the floor

536
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47856U_(U)
Stop the vehicle immediately.
The following warning indicates the possibility of damage to the vehi-
cle that may lead to an accident. Immediately stop the vehicle in a
safe place and contact your Toyota dealer.
Warning lightWarning light/Details
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
High coolant temperature warning light
Indicates that the coolant temperature is too high
Changes from a flashing to a solid light when the engine
coolant temperature increases.

5
When trouble arises
603
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47856U_(U)
If your vehicle overheats
Correction procedures
■If the high coolant temperature warning light comes on or
flashes
St op 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
the hoses and radiator core
(radiator) for any leaks.
Radiator
Cooling fans
If a large amount of coolant leaks,
immediately contact your Toyota
dealer.
The following may indicate that your vehicle is overheating.
●The high coolant temperature warning light (→P. 5 3 6 ) c o m e s o n
or flashes, or a loss of hybrid system power is experienced. (For
example, the vehicle speed does not increase.)
●“HYBRID SYSTEM OVERHEAT” (→P. 5 5 4 ) i s s h o w n o n t h e
multi-information display.
●St eam comes out fro m un der the ho od.
1 ÉTAPE
2 ÉTAPE
STEP 3

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.
Sta rt the hyb rid syste m a nd turn the air co nditioning 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:
St op the hybrid system immediately and contact your
To y o t a d e a l e r .
If the fans are operating:
Have the vehicle inspected at the nearest Toyota dealer.
ITO43P111
STEP 4
ITO52P130
STEP 5
6 ÉTAPE
STEP7

682
Alphabetical index
PRIUS PHV_OM_OM47856U_(U)
Tonneau cover .........................406
Tools .........................................451
Total load capacity...................350
Touch tracer display ................260
Towing
Dinghy towing........................357
Emergency towing.................528
Trailer towing.........................356
TRAC .........................................330
Traction control........................330
Trailer towing ...........................356
Transmission
Hybrid transmission............... 247
P position switch ...................250
Trip information .......................276
Trip meter .................................259
Turn signal lights
Replacing light bulbs ............. 510
Switch....................................256
Wattage .................................624
USB port*.................................383
Vanity lights
Vanity lights ...........................395
Wattage .................................624
Vanity mirrors...........................395
Vehicle data recordings ............24
Vehicle identification
number ...................................615
Vehicle proximity notification
system ...................................... 38
Vehicle stability control...........330
VSC............................................330
Warning buzzers
Brake system ........................ 535
Open door ............................ 539
Seat belt reminder................. 539
Warning lights
Anti-lock brake system
(ABS) .................................. 537
Automatic headlight leveling
system ................................ 538
Brake system ................ 535, 538
Charging system ................... 536
Cruise control ........................ 538
Electric power steering
system ................................ 537
High coolant temperature...... 536
Hybrid system ....................... 537
Low fuel level ........................ 539
Low tire pressure .................. 540
Malfunction indicator lamp .... 537
Open door ............................. 539
Pre-collision system .............. 538
Radar cruise control. ............. 538
Seat belt warning light........... 539
Slip indicator ......................... 538
SRS airbags .......................... 537
Tire pressure warning light.... 540
U
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684
PRIUS PHV_OM_OM47856U_(U)
What to do if...
What to do if...
A tire puncturesP. 5 6 9If you have a flat tire
The hybrid system does not start
P. 5 9 1If the hybrid system will not start
P. 1 8 3Immobilizer system
P. 5 9 7If the 12-volt battery is
discharged
The high coolant temperature
warning light flashes or comes on
“HYBRID SYSTEM OVERHEAT”
is displayed
Steam can be seen co mi ng
from under the hood
P. 6 0 3If your vehicle overheats
The key is lostP. 5 9 3If you lose your keys
The 12-volt battery runs outP. 5 9 7If the 12-volt battery is
discharged
The doors cannot be lockedP. 1 3 8Side doors
P. 1 4 4Back door
The vehicle is stuck in mud or
sandP. 6 0 8If the vehicle becomes stuck
A warning light or indicator
light comes onP. 5 3 5If a warning light turns on or a
warning buzzer sounds