2008 TOYOTA PRIUS engine

5
When trouble arises
453
5-2. Steps to take in an emergency
PRIUS_U_(L/O_0802)
■
Starting the hybrid system when the battery is discharged
The hybrid system cannot be started by push-starting.
■ Avoiding a discharged 12 volt battery
● Turn off the headlights and the audio system while the hybrid system is
turned off.
● Turn off any unnecessary electrical components when the vehicle is run-
ning at a low speed for an extended period, such as in heavy traffic, etc.
Start the engine of the second vehicle. Increase the engine
speed slightly and maintain at that level for approximately
five minutes to recharge the 12 volt battery of your vehicle.
Open and close any of the doors with the “POWER” switch
OFF.
Maintain the engine speed on the second vehicle and turn
the “POWER” switch to the ON mode, then start the vehi-
cle’s engine.
Make sure the “READY” light comes on. If the “READY”
light will not come on and the hybrid system will not start
after you recharge the battery, do the following procedure.
Turn the hybrid system off. Open and close the driver’s
door. Then push the “POWER” switch briefly and firmly. If
the light does not come on, contact your Toyota dealer.
Once the vehicle’s engine has started, remove the jumper
cables in the exact reverse order in which they were con-
nected.
Once the engine starts, have the vehicle checked at your Toyota
dealer as soon as possible.STEP4
STEP5
STEP6
STEP7
STEP8

456
5-2. Steps to take in an emergency
PRIUS_U_(L/O_0802)
If your vehicle overheats
Correction proceduresStop the vehicle in a safe place and turn off the automatic air
conditioning system.
Check to see if steam is coming out from under the hood.
If you see steam: Stop the engine and carefully lift the hood.
If you do not see steam: Leave the engine running and carefully lift the hood.
Remove the engine compartment cover. ( P. 365)
Check to see if the cooling fan is operating.
If the fan is operating: Wait until the engine coolant temperature gauge begins to
fall and then stop the engine.
If the fan is not operating: Stop the hybrid system immediately and call your local Toy-
ota dealer.
After the hybrid system has
cooled down sufficiently, check
the coolant level and inspect the
radiator core (radiator) for any
leaks.
The following may indicate that your vehicle is overheating:
The high engine coolant temperature warning light comes on:
The engine may be overheating.
Follow the correction procedure as described blow.
STEP1
STEP2
STEP3
STEP4
ITY52P018
STEP5

5
When trouble arises
457
5-2. Steps to take in an emergency
PRIUS_U_(L/O_0802)
Add coolant if required.
Water can be used in an emer-
gency measure if coolant is
unavailable. (
P. 467)
Have the vehicle checked at your nearest Toyota dealer as soon as
possible.
ITY52P019
STEP6
■Overheating
In the following situations, your vehicle may be overheating.
● High coolant temperature warning light is displayed on the touch screen.
● Steam is coming from under the hood.
CAUTION
■To prevent an accident or injury when inspecting under the hood of
your vehicle
● Keep hands and clothing away from the fan and engine drive belt while the
engine is running.
● Do not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam
released under pressure.

458 5-2. Steps to take in an emergency
PRIUS_U_(L/O_0802)
NOTICE
■When adding engine 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 engine too
quickly can cause damage to the hybrid system.

463
6-1. Specifications
6
Vehicle specifications
PRIUS_U_(L/O_0802)
Vehicle identification
The vehicle identificati on number (VIN) is the legal identifier for your
vehicle. This is the primary identification number for your Toyota. It is
used in registering the ownership of your vehicle.
This number is stamped on the
top left of the instrument panel.
This number is also on the Certi-
fication Label.
The engine number and traction
motor number are stamped on
the engine block as shown.Gasoline engine number
Electric motor (traction motor)
number
ITY61P001
ITY61P002
ITY61P003

464 6-1. Specifications
PRIUS_U_(L/O_0802)
Engine
Fuel
Model1NZ-FXE
Type4-cylinder in line, 4-cycle, gasoline
Bore and stroke 2.95  3.33 in. (75.0  84.7 mm)
Displacement91.4 cu. in. (1497 cm3)
Drive belt tension 44 - 88 lbf(196 - 392 N, 20 - 40 kgf)*
*: Drive belt tension measured with Boroughs
drive belt tension gauge No. BT-33-73F (used
belt)
Valve clearance
(engine cold)
Intake
Exhaust
0.007 - 0.009 in. (0.17 - 0.23 mm)
0.011 - 0.013 in. (0.27 - 0.33 mm)
Fuel typeUnleaded gasoline only
Octane Rating
87 (Research Octane Number 91) or higher
Fuel tank capacity 11.9 gal. (45 L, 9.9 lmp.gal.)
Idler assembly
Crankshaft Water pump

466 6-1. Specifications
PRIUS_U_(L/O_0802)
Lubrication system
*:5W-30 is an oil that provides optimal levels of fuel efficiency.
Oil viscosity:
● The 5W portion of the oil viscosity rating indicates the characteristic
of the oil which allows cold startab ility. Oils with a lower value before
the W allow for easier starting of the engine in cold weather.
● The 30 in 5W-30 indicates the oil viscosity when the oil is as its oper-
ating temperature. An oil with a higher viscosity may be better suited
if the vehicle is operated at high speeds, or under extreme load con-
dition.
Oil capacity
(drain and refill)
with filter
without filter 3.9 qt. (3.7 L, 3.3 lmp.qt.)
3.6 qt. (3.4 L, 3.0 lmp.qt.)
Oil grade
ILSAC multigrade engine oil
Recommended oil
viscosityUse Toyota approved “Toyota Genuine Motor Oil” or
equivalent to satisfy the grade and viscosity shown
below.
Outside temperature

467
6-1. Specifications
6
Vehicle specifications
PRIUS_U_(L/O_0802)
Cooling system
Ignition system
Capacity
Gasoline engine
Power control unit
9.0 qt. (8.6 L, 7.5 lmp.qt.)
2.9 qt. (2.7 L, 2.4 lmp.qt.)
Coolant typeUse either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-silicate, non-amine, non-nitrite, and non-borate
coolant with long-life organic acid technology
Do not use plain water alone.
Spark plug
Make DENSO NGK SK16R11
IFR5A11
Gap
0.043 in. (1.1 mm)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.