2012 TOYOTA PRIUS PLUS air condition

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Maintenance and care
PRIUS +_OM_OM47821E_(EE)
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. 410)
Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in your eyes.

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PRIUS +_OM_OM47821E_(EE)
Radiator and condenser
Check the radiator and condenser and clear away any foreign
objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehicle inspected by any authorized Toyota
dealer or repairer, or another duly qualified and equipped profes-
sional.
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.
CAUTION
When the hybrid system is hot
Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.

424 4-3. Do-it-yourself maintenance
PRIUS +_OM_OM47821E_(EE)
CAUTION
Proper inflation is critical to save tire performance
Keep your tires properly inflated. Otherwise, the following conditions may
occur and result in an accident causing death or serious injury:
Excessive wear
Uneven wear
Poor handling
Possibility of blowouts resulting from overheated tires
Poor sealing of the tire bead
Wheel deformation and/or tire separation
A greater possibility of tire damage from road hazards
NOTICE
When inspecting and adjusting tire inflation pressure
Be sure to put the tire valve caps back on.
Without the valve caps, dirt or moisture could get into the valve and cause
air leakage, which could result in an accident. If the caps are lost, replace
them as soon as possible.

427
4-3. Do-it-yourself maintenance
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Maintenance and care
PRIUS +_OM_OM47821E_(EE)
Air conditioning filter
The air conditioning filter must be changed regularly to maintain air
conditioning efficiency.
Removal method
Turn the “POWER” switch off.
Open the glove box and
remove the filter exchange
cover.
Remove the filter cover.
Left-hand drive vehicles
Right-hand drive vehicles
STEP 1
STEP 2
STEP 3

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Maintenance and care
PRIUS +_OM_OM47821E_(EE)
Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to
the “Toyota Service Booklet” or “Toyota Warranty Booklet”.)
If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
NOTICE
To prevent damage to the system
When using the air conditioning system, make sure that a filter is always
installed.

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Maintenance and care
PRIUS +_OM_OM47821E_(EE)
Fuse layout and amperage ratings
Engine compartment
FUSEAmpereCircuit
1 HTR 50A Air conditioning system
2 RDI 30A Electric cooling fans
3 CDS 30A Electric cooling fans
4 S-HORN 10A S-HORN
5 ENG W/P 30A Cooling system
6ABS MAIN
NO.27.5A Anti-lock brake system
7 H-LP CLN 30A Headlight cleaner
8 P-CON MTR 30AP position control system, trans-
mission
9 AMP 30A Audio system
10 IGCT 30A PCU, IGCT NO.2, IGCT NO.3
11 DC/DC-S 5A Inverter and converter

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PRIUS +_OM_OM47821E_(EE)
FUSEAmpereCircuit
12 P CON MAIN 7.5AP position control system, trans-
mission
13 AM2 7.5A Power management system
14 ECU-B2 7.5A Smart entry & start system
15 MAYDAY 10A No circuit
16 ECU-B3 10A Air conditioning system
17 TURN & HAZ 10A Turn signal lights
18 ETCS 10AMultiport fuel injection system/
sequential multiport fuel injection
system
19ABS MAIN
NO.120A Anti-lock brake system
20 P/I 2 40AHorn, right-hand headlight (low
beam), left-hand headlight (low
beam), back-up lights
21 ABS MTR 1 30A Anti-lock brake system
22 ABS MTR 2 30A Anti-lock brake system
23 H-LP HI MAIN 20AH-LP HI RH, H-LP HI LH,
headlight switch, daytime running
light system
24 HV BATT 10AHybrid system, hybrid battery
(traction battery)
25 DRL 7.5A Daytime running light system
26 P/I 1 60A IG2, EFI MAIN, BATT FAN
27 EPS 60A Electric power steering
28 PCU 10A Inverter and converter
29 IGCT NO.2 10AHybrid system, P position control
system, inverter and converter

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Maintenance and care
PRIUS +_OM_OM47821E_(EE)
FUSEAmpereCircuit
14 STOP 10AStop lights, high mounted stop-
light, brake system, driver support
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 Panoramic roof shades
20 ECU-IG NO.1 10AElectric cooling fans, multiplex
communication system
21 ECU-IG NO.2 10ADriver support system, Pre-crash
safety System, inside rear view
mirror, yaw rate & G sensor, brake
system, electric power steering,
navigation system, panoramic roof
shades, seat belt pretensioners,
audio system, emergency flash-
ers, turn signal lights, windshield
wipers, headlight cleaner
22 GAUGE 10AHeadlight leveling system, seat
belt reminder light, gauges and
meters
23 A/C 10A Air conditioning system
24 WASHER 15A Windshield washer
25 RR WIP 20A Rear window wiper and washer