2012 TOYOTA PRIUS PLUG-IN air conditioning

441
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
4
Maintenance and care
CAUTION
The engine compartment contains many mechanisms and fluids that may
move suddenly, become hot, or become electrically energized. To avoid death
or serious injury, observe the following precautions.
■When working on the engine compartment
●Make sure that the indicator on the “POWER” switch and the “READY”
indicator are both off.
●Keep hands, clothing and tools away from the moving fan.
●Be careful not to touch the engine, power control unit, radiator, exhaust
manifold, etc. right after driving as they may be hot. Oil and other fluids
may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the
engine compartment.
●Do not smoke, cause sparks or expose an open flame to fuel. Fuel fumes
are flammable.
■When working near the electric cooling fans or radiator grille
Be sure the “POWER” switch is off.
With the “POWER” switch in ON mode, the electric cooling fans may auto-
matically start to run if the air conditioning is on and/or the coolant tempera-
ture is high. (→P. 4 6 6 )
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine wear
due to dirt in the air.

498
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
Fuse layout and amperage ratings
■Engine compartment
FUSEAmpereCircuit
1HTR 50A Air conditioning system
2RDI 30A Electric cooling fans
3CDS 30A Electric cooling fans
4FUEL OPN 7.5A Fuel filler door opener
5S-HORN 10A No circuit
6ENG W/P 30A Cooling system
7ABS MAIN
NO.27.5A Anti-lock brake system
8H-LP CLN 30A Headlight cleaner
9P-CON MTR 30AP position control system, trans-
mission
10 AMP NO.1 30A Audio system

503
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
4
Maintenance and care
FUSEAmpereCircuit
14 STOP 10A
Stop lights, high mounted stop-
light, brake system, driver support
system, vehicle proximity notifica-
tion system
15 P FR DOOR 25A Power windows
16 D FR DOOR 25A Power windows
17 DOOR RR 25A Power windows
18 DOOR RL 25A Power windows
19 S/ROOF 30A No circuit
20 ECU-IG NO.1 10A
Electric cooling fans, multiplex
communication system, vehicle
proximity notification system
21 ECU-IG NO.2 10A
Driver support system, Pre-Colli-
sion System, inside rear view mir-
ror, garage door opener, yaw rate
& G sensor, brake system, naviga-
tion system, tire pressure warning
system, seat belt pretensioners,
audio system, emergency flash-
ers, turn signal lights, windshield
wipers, headlight cleaner
22 GAUGE 10AHeadlight leveling system, gauges
and meters
23 A/C 10AAir conditioning system, Remote
Air Conditioning System
24 WASHER 15A Windshield washer

504
4-3. Do-it-yourself maintenance
PRIUS PHV_OM_OM47818U_(U)
FUSEAmpereCircuit
25 RR WIP 20A Rear window wiper and washer
26 WIP 30A Windshield wipers
27 MET 7.5A Gauges and meters
28 IGN 10A
Brake system, driver support sys-
tem, multiport fuel injection sys-
tem/sequential multiport fuel
injection system, SRS airbag sys-
tem, front passenger occupant
classification system (ECU and
sensors), power management sys-
tem, smart key system, front pas-
senger’s seat belt reminder light
29 PANEL 10A
Air conditioning system, personal
light, transmission, P position
switch, navigation system, Remote
Air Conditioning System, headlight
cleaner, front passenger’s seat
belt reminder light, headlight level-
ing system, glove box light, clock,
audio system, MPH or km/h switch
30 TAIL 10A
Headlight leveling system, park-
ing lights, tail lights, license plate
lights, front fog lights, side marker
lights

532
5-1. Essential information
PRIUS PHV_OM_OM47818U_(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 conditioning after use is normal.)
●Flat-looking tires or uneven tire wear
●High engine coolant temperature warning light flashes or
comes on
■Audible symptoms
●Changes in exhaust sound
●Excessive tire squeal when cornering
●St rang e noises re la te d 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
●Ve h i c l e p u l l s h e a v i l y t o o n e s i d e w h e n b r a k i n g
●Ve h i c l e p u l l s h e a v i l y t o o n e s i d e w h e n d r i v i n g o n a l e v e l r o a d
●Loss of brake effectiveness, spongy feeling, pedal almost
touches the floor

5
When trouble arises
601
5-2. Steps to take in an emergency
PRIUS PHV_OM_OM47818U_(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.
Sta rt the hyb rid system an d turn the air co nditioning 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:
St op the hybrid system immediately and contact your
To y o t a d e a l e r .
If the fans are operating:
Have the vehicle inspected at the nearest Toyota dealer.
ITO43P111
STEP 4
ITO52P130
STEP 5
6 ÉTAPE
STEP7

631
6-1. Specifications
6
Vehicle specifications
PRIUS PHV_OM_OM47818U_(U)
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
Tire pressure when the vehicle has been
parked for three hours or more, or has not
been driven more than 1 mile or 1.5 km under
that condition
Maximum inflation
pressure
The maximum cold inflated pressure to which a
tire may be inflated, shown on the sidewall of
the tire
Recommended infla-
tion pressure
Cold tire inflation pressure recommended by a
manufacturer
Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of auto-
matic transmission, power steering, power
brakes, power windows, power seats, radio
and heater, to the extent that these items are
available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard
equipment, including the maximum capacity of
fuel, oil and coolant, and if so equipped, air
conditioning and additional weight optional
engine
Maximum loaded vehi-
cle weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight

644
6-2. Customization
PRIUS PHV_OM_OM47818U_(U)
ItemFunctionDefault set-
ting
Custom-
ized
setting
Meter and
instrument
panel
(→P. 2 5 7 )
Sensor sensitiv-
ity for darkening
the brightness of
the meter, navi-
gation system
and instrument
panel depend-
ing on the out-
side brightness
0 -2 to +2 – – O
Sensor sensitiv-
ity for returning
the brightness of
the meter, navi-
gation system
and instrument
panel to the orig-
inal level
depending on
the outside
brightness
0 -2 to +2 – – O
Automatic
air
conditioning
system
(→P. 3 5 8 )
Enable/disable
automatic
operation of the
air conditioning
compressor
when the
“AUTO” switch
ON
ON OFF – O O
Heating/cooling
operation mini-
mized in Eco
drive mode
ON OFF – – O