2012 TOYOTA PRIUS PLUG-IN check engine

460
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
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 into 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.
Wipe the dipstick and reinsert it fully.
STEP 1
STEP 2
STEP 3
STEP 4
STEP 4
STEP 5
STEP 6

462
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
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. 6 1 5
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

463
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
4
Maintenance and care
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 p r e v e n t s e r i o u s e n g i n e d a m a g e
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.

465
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
4
Maintenance and care
■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.

495
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
4
Maintenance and care
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.
Ve h i c l e s w i t h S o l a r Ve n t i l a t i o n S ystem: 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 panel
Remove the lid.
After a system failure, see “Fuse layout and amperage rat-
ings” (→P. 4 9 8 ) f o r d e t a i l s a b o u t w h i c h f u s e t o c h e c k .
STEP 1
STEP 2
ITO43P127
STEP 3

604
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(U)
CAUTION
■To p r e v e n t a n a c c i d e n t o r i n j u r y 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.
●Check that the indicator on the “POWER” switch and the “READY” indica-
tor are off.
●On hybrid vehicles, the gasoline engine may automatically 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.
NOTICE
■When adding engine/power control unit coolant
Wait until the hybrid system has cooled down before adding engine/power
control unit coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot hybrid sys-
tem too quickly can cause damage to the hybrid system.
■To p r e v e n t d a m a g e t o t h e c o o l i n g s y s t e m
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.)
●Do not use commercially available coolant additives

614
6-1. Specifications
PRIUS PHV_OM_OM47818U_(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.
TypePermanent magnet motor
Maximum output 60 kW
Maximum torque 153 ft•lbf (207 N•m, 21.1 kgf•m)
TypeLithium-ion battery
Vo l ta g e 3 . 7 V / c e l l
Capacity 21.5 Ah
Quantity 56 cells
Overall voltage 207 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.)

672
Alphabetical index
PRIUS PHV_OM_OM47818U_(U)
Engine
Accessory mode....................240
Compartment ........................459
Hood......................................442
How to start the hybrid
system ................................238
Identification number .............611
If the hybrid system will not
start .....................................588
Ignition switch........................238
Overheating...........................600
“POWER” switch ...................238
Engine coolant
Capacity ................................617
Checking ............................... 464
Preparing and checking
before winter ....................... 349
Engine/power control
unit coolant
Capacity ................................617
Checking ............................... 464
Preparing and checking
before winter ....................... 349
Engine oil
Capacity ................................614
Checking ............................... 460
Preparing and checking
before winter ....................... 349
Enhanced VSC .........................328
EPS............................................328
EV driving ratio indicator ........271
EV driving range ................58, 268
Event data recorder ...................25
EV/HV mode selection
switch .......................................37
Floor mats ................................ 401
Fluid
Brake..................................... 619
Washer.................................. 469
Fog lights
Replacing light bulbs ............. 507
Switch ................................... 298
Wattage................................. 620
Foot lights ................................ 382
Front fog lights
Replacing light bulbs ............. 507
Switch ................................... 298
Wattage................................. 620
Front passenger occupant
classification system ............ 198
Front passenger’s seat belt
reminder light ........................ 537
Front seats
Adjustment ............................ 146
Front side marker light
Replacing light bulbs ............. 507
Wattage................................. 620
Front turn signal lights
Replacing light bulbs ............. 507
Switch ................................... 254
Wattage................................. 620
Fuel
Capacity ................................ 613
Fuel gauge ............................ 257
Information ............................ 621
Refueling ............................... 174
Type ...................................... 621
Fuel door .................................. 174
Fuel filler door .......................... 174
Fuses ........................................ 495
F