coolant level TOYOTA PRIUS PLUG-IN HYBRID 2014 1.G Owners Manual

436
4-2. Maintenance
PRIUS PHV_OM_OM47856U_(U)
General maintenance
Engine compartment
ItemsCheck points
Brake fluid Is the brake fluid at the correct
level? (
P. 470)
Engine/power control unit coolant Is the engine/power control unit
coolant at the correct level?
(P. 467)
Engine oil Is the engine oil at the correct
level?
(P. 463)
Exhaust system There should not be any fumes or
strange sounds.
Radiator/condenser The radiator and condenser
should be free from foreign
objects. (
P. 469)
Washer fluid Is there sufficient washer fluid?
(P. 472)
Listed below are the general maintenance items that should be per-
formed at the intervals specified in the “Owner’s Warranty Informa-
tion Booklet” or “Owner’s Manual Supplement/Scheduled
Maintenance Guide”. It is recommended that any problem you notice
should be brought to the attention of your Toyota dealer or qualified
service shop for advice.

442
PRIUS PHV_OM_OM47856U_(U)
4-3. Do-it-yourself maintenance
Do-it-yourself ser vice precautions
If you perform maintenance by yourself, be sure to follow the correct
procedure as given in these sections.
ItemsParts and tools
12-volt battery condition (P. 474)• Grease
• Conventional wrench
(for terminal clamp bolts)
Brake fluid level ( P. 470)
• FMVSS No.116 DOT 3 or SAE
J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine/power control unit coolant
level ( P. 467)
• “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
For the U.S.A.:
“Toyota Super Long Life Cool-
ant” is pre-mixed with 50% cool-
ant and 50% deionized water.
For Canada:
“Toyota Super Long Life Cool-
ant” is pre-mixed with 55% cool-
ant and 45% deionized water.
• Funnel (used only for adding cool- ant)

462
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47856U_(U)
Engine compar tment
■12-volt battery
P. 474
Engine coolant reservoir
( P. 467)
Engine oil level dipstick ( P. 463)
Engine oil filler cap ( P. 464)
Power control unit coolant
reservoir ( P. 467)Brake fluid reservoir
( P. 470)
Fuse box ( P. 498)
Radiator ( P. 469)
Condenser ( P. 469)
Electric cooling fans
Washer fluid tank ( P. 472)

467
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47856U_(U)
4
Maintenance and care
Coolant
The coolant level is satisfactory if it is between the full (“FULL” or “F”)
and low (“LOW” or “L”) lines on the reservoir when the hybrid system
is cold.
Engine coolant reservoir
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line. (P. 621)
Power control unit coolant reservoir
Reservoir cap
“F” line
“L” line
If the level is on or below the “L”
line, add coolant up to the “F” line.
(P. 621)
ITO43P111

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 cond itioning after use is normal.)
● Flat-looking tires or uneven tire wear
● High engine coolant temperatur e warning light flashes or
comes on
■ Audible symptoms
●Changes in exhaust sound
● Excessive tire squeal when cornering
● Strange noises related 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
● Vehicle pulls heavily to one side when braking
● Vehicle pulls heavily to one side when driving on a level road
● Loss of brake effectiveness, s pongy feeling, pedal almost
touches the floor

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.
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STEP 4
ITO52P130
STEP 5
6 ÉTAPE
STEP7

5
When trouble arises
605
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47856U_(U)
■
If “HYBRID SYSTEM OVERHEAT” is shown on the multi-infor-
mation 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 your Toyota
dealer.
The coolant level is satisfactory if
it is between the “F” and “L” lines
on the reservoir.Reservoir
“F”
“L”
STEP 1
STEP 2
STEP 3
STEP 4

682 Alphabetical index
PRIUS PHV_OM_OM47856U_(U)
Tonneau cover ......................... 406
Tools ......................................... 451
Total load capacity................... 350
Touch tracer display ................260
TowingDinghy 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.... 540U
V
W

685
What to do if...
PRIUS PHV_OM_OM47856U_(U)
■
Warning lights
P. 540
or
P. 537
or
P. 535P. 537
P. 536P. 538
P. 536P. 538
P. 538
or
P. 537P. 538
P. 537P. 538
Master warning light ABS warning light
Brake system warning
light (red indicatorF
Electric power steering
system warning light
Charging system
warning lightPre-collision system
warning light
G
High coolant
temperature warning
lightSlip indicator light
Brake system warning
light (yellow indicator)Malfunction indicator
lamp
Automatic headlight
leveling system
warning light
SRS warning lightCruise control indicator
light
G