coolant level TOYOTA PRIUS 2016 4.G Owners Manual

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7-2. Maintenance
7
Maintenance and care
General maintenance
Listed below are the general maintenance items that should be
performed at the intervals specified in the “Owner’s Warranty
Information Booklet” or “Owner’s Manual Supplement/Sched-
uled 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.
Engine compartment
ItemsCheck points
12-volt batteryCheck the connections. (P. 598)
Brake fluidIs the brake fluid at the correct level? ( P. 601)
Engine/power control
unit coolantIs the engine/power control unit coolant at the
correct level? (P. 595)
Engine oilIs the engine oil at the correct level? (P. 592)
Exhaust systemThere should not be any fumes or strange
sounds.
Radiator/condenserThe radiator and condenser should be free from
foreign objects. (P. 597)
Washer fluidIs there sufficient washer fluid? (P. 603)

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7-3. Do-it-yourself maintenance
7
Maintenance and care
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. 598)•Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
(P. 601)• 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 cool-
ant level
(P. 595)
• “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 Coolant” is pre-mixed with
50% coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is pre-mixed with
55% coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(P. 592)• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses ( P. 631)• Fuse with same amperage rating as original
Light bulbs
(P. 636)
• Bulb with same number and wattage rating as origi-
nal
• Phillips-head screwdriver
• Flathead screwdriver• Wrench
Radiator and con-
denser ( P. 597)

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7-3. Do-it-yourself maintenance
7
Maintenance and care
Engine compartment
Engine coolant reservoir ( P. 595)
Fuse boxes ( P. 631)
Engine oil level dipstick ( P. 592)
Engine oil filler cap ( P. 593)
Brake fluid reservoir ( P. 601) 12-volt battery (
P. 598)
Power control unit coolant
reservoir ( P. 595)
Radiator ( P. 597)
Condenser ( P. 597)
Electric cooling fans
Washer fluid tank ( P. 603)1
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5957-3. Do-it-yourself maintenance
7
Maintenance and care
The coolant level is satisfactory if it is between the “FULL” and “LOW”
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. 717)
■
Power control unit 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. 717)
Coolant
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7-3. Do-it-yourself maintenance
■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% coolant and 50% deion-
ized water. (Minimum temperature: -31 F [-35 C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-
ized 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 reservoir
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.
WARNING
■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.
NOTICE
■When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
■ If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

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8-2. Steps to take in an emergency
If you think something is wrong
●Fluid leaks under the vehicle
(Water dripping from the air co nditioning after use is normal.)
● Flat-looking tires or uneven tire wear
● High coolant temperature warning light flashes or comes on
● 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
● 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, spon gy feeling, pedal almost touches
the floor
If you notice any of the follow ing symptoms, your vehicle proba-
bly needs adjustment or repair. Contact your Toyota dealer as
soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms

6578-2. Steps to take in an emergency
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8
When trouble arises
Slip indicator lightIndicates a malfunction in:
• The VSC system;
• The TRAC system; or
• The hill-start assist control system
 Have the vehicle inspected by your Toyota dealer
immediately.
The light will flash when the ABS, VSC or TRAC system is
operating.
High coolant temperat ure warning light
• When the light flashes:
Indicates that the engine coolant temperature is too high
The light changes from a flashing to a solid light when
the temperature further increases
 Immediately stop the vehicle in a safe place. ( P. 717)
• When the light comes on without flashing: Indicates a malfunction in the exhaust heat recirculator
system
 Have the vehicle inspected by your Toyota dealer
immediately.
(Flashes)
(If equipped)
ICS OFF indicator
Indicates a malfunction in the Intelligent Clearance Sonar
function
 Have the vehicle inspected by your Toyota dealer.
The warning light will operate as follows, even when the
system is not malfunctioning:
• The light will come on when the Intelligent Clearance Sonar function is turned off ( P. 348)
• The light will come on when the Intelligent Clearance Sonar function is operating ( P. 352)
• The light will flash when the system cannot be tempo- rarily used ( P. 356)
Open door warning light (warning buzzer)*3
Indicates that a door is not fully closed
 Check that all the doors are closed.
Low fuel level warning light
Indicates that remaining fuel is approximately 1.7 gal.
(6.4 L, 1.4 Imp.gal.) or less
 Refuel the vehicle.
Warning lightWarning light/Details/Actions

7188-2. Steps to take in an emergency
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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 th e radiator or hoses.
The fans operate when the air conditioning 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 your Toyota
dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Toyota dealer.
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7198-2. Steps to take in an emergency
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When trouble arises
■If “Hybrid System Overheated” is shown on the multi-informa-
tion displayStop 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 “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.
If water was added in an emer-
gency, have the vehicle inspected
at your Toyota dealer as soon as
possible.
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798Alphabetical index
PRIUS_OM_OM47A29U_(U)
Warning buzzersBlind Spot Monitor (BSM) ..... 322
Brake system ....... ................. 655
Downshifting ......................... 236
Lane departure alert ............. 290
Open door ..................... 169, 657
Open moon roof .................... 204
Parking assist sensors ............... 335, 346, 359
Pre-Collision warning ............ 275
Radar cruise control.............. 309
Seat belt reminder ................ 658
Warning lights ABS....................................... 656
Brake Override System......... 658
Brake system ....... ................. 655
Charging system ................... 655
Drive-Start Control ................ 658
Driver’s seat belt reminder ............................. 658
Electronic engine control system ......... ....................... 655
Electric power steering ......... 656
Front passenger’s seat
belt reminder ...................... 658
High coolant temperature ..... 657
ICS OFF indicator ................. 657
Intelligent Clearance Sonar .................................. 658
LDA system .......................... 659
Low engine oil pressure ........ 655
Low fuel level ........................ 657
Malfunction indicator lamp .... 655
Master warning light.............. 658
Open door ............................. 657
PCS ...................................... 656
Seat belt reminder light ......... 658
Slip indicator ......................... 657
SRS ...................................... 656
Tire pressure......................... 658 Warning messages.................. 665
Warning reflector..................... 536
Washer
Checking............................... 603
Preparing and checking before winter ...................... 414
Switch ........................... 254, 260
Washing and waxing ............... 568
Water-repellent coating .......... 569
Weights Cargo capacity...................... 222
Load limits ............................ 726
What to do if... (Troubleshooting) ................. 778
Wheels ...................................... 618 Replacing wheels ................. 673
Size....................................... 734
Window glasses ...................... 198
Window lock switch ................ 198
Windows Power windows..................... 198
Rear window defogger.......... 517
Washer ......................... 254, 260
Windshield wipers ................... 254 Handling the wiper arms ....... 573
Winter driving tips ................... 414
Wiper rubber replacement ...... 624
Wireless charger ..................... 544
Wireless communication ........ 457
Wireless remote control key .......................................... 160Locking/Unlocking ................ 160
Panic mode........................... 161
Replacing the battery............ 628
WMA disc ................................. 440
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