check engine TOYOTA PRIUS 2015 4.G User Guide

414
4-2. Maintenance
PRIUS_OM_OM47A17U_DVD_(U)
General maintenance
Engine compartment
ItemsCheck points
Brake fluid Is the brake fluid at the correct
level? (
P. 436)
Engine/power control unit coolant Is the engine/power control unit
coolant at the correct level?
(P. 433)
Engine oil Is the engine oil at the correct
level?
(P. 429)
Exhaust system There should not be any fumes or
strange sounds.
Radiator/condenser The radiator and condenser
should be free from foreign
objects. (
P. 435)
Washer fluid Is there sufficient washer fluid?
(P. 438)
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.

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4-2. Maintenance
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4
Maintenance and care
Vehicle exterior
ItemsCheck points
Doors • Do the doors operate smoothly?
Engine hood • Does the engine hood lock sys-
tem work properly?
Fluid leaks • There should not be any signs of
fluid leakage after the vehicle has
been parked.
Tires • Is the tire inflation pressure cor-
rect?
• The tires should not be dam- aged or excessively worn.
• Have the tires been rotated according to the maintenance
schedule?
• The wheel nuts should not be loose.
Windshield wipers/rear window
wiper • The wiper blades should not show
any signs of cracking, splitting,
wear, contamination or deforma-
tion.
• The wiper blades should clear the windshield/rear window without
streaking or skipping.
CAUTION
■ If the hybrid system is operating
Turn the hybrid system off and ensure that there is adequate ventilation
before performing maintenance checks.

429
4-3. Do-it-yourself maintenance
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4
Maintenance and care
Engine oil
With the engine at operating temperature and turned off, check the oil
level on the dipstick.
■ Checking the engine oil
Park the vehicle on level ground. After warming up the engine
and turning off the hybrid system, wait more than 5 minutes
for the oil to drain back in to the bottom of the engine.
Holding a rag under the end, pull
the dipstick out.
Wipe the dipstick clean.
Flat dipstick: Reinsert the dipstick fully. Non-flat dipstick: Reinsert the
dipstick fully with its protruding
areas ( in the illustration)
pointing towards the engine.
Holding a rag under the end, pull the dipstick out and check
the oil level.
STEP 1
STEP 2
STEP 3
STEP 4
STEP 4
STEP 5

431
4-3. Do-it-yourself maintenance
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4
Maintenance and care
Make sure to check the oil type and prepare the items needed before
adding oil.
Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.
Engine oil selectionP. 576
Oil quantity
(Low  Full) 1.6 qt. (1.5 L, 1.3 Imp.qt.)
Items Clean funnel
■ Engine oil consumption
A certain amount of engine oil will be consumed while driving. In the follow-
ing situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance intervals.
●When the engine is new, for example directly after purchasing the vehicle
or after replacing the engine
● If low quality oil or oil of an inappropriate viscosity is used
● When driving at high engine speeds or with a heavy load, or when driving
while accelerating or decelerating frequently
● When leaving the engine idling for a long time, or when driving frequently
through heavy traffic
STEP 1
STEP 2
STEP 3

432 4-3. Do-it-yourself maintenance
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CAUTION
■Used engine oil
●Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation and skin cancer, so care
should be taken to avoid prolonged and repeated contact. To remove used
engine oil from your skin, wash thoroughly with soap and water.
● Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewers or onto the
ground. Call your Toyota dealer, service station or auto parts store for
information concerning recycling or disposal.
● Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■ When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
● Avoid overfilling, or the engine could be damaged.
● Check the oil level on the dipstick every time you refill the vehicle.
● Be sure the engine oil filler cap is properly tightened.

434 4-3. Do-it-yourself maintenance
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■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% deionized water. (M inimum temperature: -31F [-35 C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized water. (M inimum 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.

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4-3. Do-it-yourself maintenance
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Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
Turn the “POWER” switch off.
Vehicles with Solar Ventilation Sy stem: Turn the Solar Ventilation
System off and make sure not to operate the Remote Air Condi-
tioning System.
Open the fuse box cover.
Engine compartment
Push the tab in and lift the lid
off.
When closing, first hook the lid
onto the two rear tabs.
Left side instrument panelRemove the lid.
After a system failure, see “Fuse layout and amperage rat-
ings” ( P. 469) for details about which fuse to check.
STEP 1
STEP 2
ITO43P127
STEP 3

5
When trouble arises
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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.

575
6-1. Specifications
6
Vehicle specifications
PRIUS_OM_OM47A17U_DVD_(U)
Electric motor (Traction motor)
Hybrid battery (traction battery)
Lubrication system
*: The engine oil capacity is a reference quantity to be used when changing the
engine oil. Warm up the engine and turn off the hybrid system, wait more
than 5 minutes, and check the oil level on the dipstick.
Ty p ePermanent magnet motor
Maximum output 60 kW
Maximum torque 153 ft•lbf (207 N•m, 21.1 kgf•m)
Ty p eNickel-Metal hydride battery
Voltage 7.2 V/module
Capacity6.5 Ah (3HR)
Quantity 28 modules
Overall voltage 201.6 V
Oil capacity
(Drain and refill 
reference
*)
With filter
Without filter
4.4 qt. (4.2 L, 3.7 Imp.qt.)
4.1 qt. (3.9 L, 3.4 Imp.qt.)

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