2011 TOYOTA YARIS SEDAN cooling

167
3-1. Using the air conditioning system
and defogger
3
Interior features
Adjusting the settings
n Adjusting the temperature setting (heater)
Turn the temperature control dial clockwise to increase the temper-
ature.
n Adjusting the temperature setting (air conditioning system)
Turn the temperature control dial clockwise (warm) or counter-
clockwise (cool).
If is not pressed, the system will blow ambient temperature air or
heated air.
For quick cooling, turn the temperature control dial to the “
MAX A/C”
position and set the air intake selection dial to (recirculated air)
mode.
n Adjusting the fan speed
Turn the fan speed control dial clockwise (increase) or counter-
clockwise (decrease).
Set the dial to “0” to turn the fan off.
n Selecting the air outlets
Set the air outlet selection di al to an appropriate position.
The positions between the air outlet selections shown below can also be
selected for more detailed adjustment.
When the dial is set to , air
flows to the upper body.

172 3-1. Using the air conditioning system and defogger
nFor quick cooling (vehicles wi th air conditioning system)
Turn the temperature control dial to the “MAX A/C” position and select the
recirculated air mode.
n For quick clearing of th e windshield and side windows (vehicles with
air conditioning system)
Press
to turn the air conditioning on.
n Using the system in recirculated air mode
The windows will fog up more easily if the recirculated air mode is used for
an extended period.
n When outside air temperature approach es 32°F (0°C) (vehicles with air
conditioning system)
The air conditioning system may not operate even when
is pressed.
n When
is selected for the air outlets used
For your driving comfort, air flowing to the feet may be warmer than air flow-
ing to the upper body depending on the position of the temperature adjust-
ment dial.
n Air conditioning odors
lDuring use, various odors from inside and outside the vehicle may enter
into and accumulate in the air conditioning system. This may then cause
odor to be emitted from the vents.
l To reduce potential odors from occurring:
It is recommended that the air conditioning system be set to outside air
mode prior to turning the vehicle off.

233
4-3. Do-it-yourself maintenance
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
●Keep hands, clothing, and tools away from the moving fan and engine
drive belt.
● Be careful not to touch the engine, 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 or rags, in the
engine compartment.
● Do not smoke, cause sparks or expose an open flame to fuel or the bat-
tery. Fuel and battery fumes are flammable.
● Be extremely cautious when working on the battery. It contains poisonous
and corrosive sulfuric acid.
● Take care because brake fluid can harm your hands or eyes and damage
painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with
clean water immediately.
If you still experience discomfort, see a doctor.
■ When working near the electric cooling fan or radiator grille
Be sure the engine switch is off.
With the engine switch on, the electric cooling fan may automatically start to
run if the air conditioning is on and/or the coolant temperature is high.
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.

238
4-3. Do-it-yourself maintenance
Engine compar tment
Washer fluid tank (→P. 248)
Engine oil filler cap (→ P. 239)
Engine oil level dipstick (→ P. 239)
Radiator cap
Battery ( →P. 246)
Brake fluid reservoir (→ P. 244)Fuse box ( →P. 267)
Condenser ( →P. 244)
Electric cooling fan
Engine coolant reservoir (→ P. 243)
Radiator ( →P. 244)

243
4-3. Do-it-yourself maintenance
4
Maintenance and care
Engine coolant
The coolant level is satisfactory if it is between the FULL and LOW
lines on the reservoir when the engine is cold.
Reservoir cap
FULL
LOW
If the level is on or below the
LOW line, add coolant up to the
FULL line.
■If the coolant level drops within a short time after replenishing
Visually check the radiator, hoses, reservoir cap, radiator cap, drain cock
and water pump.
If you cannot find a leak, have your Toyota dealer pressure test the cap and
check for leaks in the cooling system.
■ Coolant selection
Only use “Toyota Super Long Life Coolant” or similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant
with long-life hybrid organic acid technology.
Except Canada:“Toyota Super Long Life Coolant” is a mixture of 50% cool- ant and 50% deionized water. (Enabled: -31 °F [-35 °C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized water. (Enabled: -44 °F [-42 °C])
For more details about engine coolant, contact your Toyota dealer.
CAUTION
■ When the engine is hot
Do not remove the radiator cap.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing burns or other injuries.

244 4-3. Do-it-yourself maintenance
Radiator and condenserCheck the radiator and condenser and clear any foreign objects.
If either of the above parts are ex tremely dirty or you are not sure of
their condition, have your vehicl e checked by your Toyota dealer.
Brake fluid
■ Checking fluid level
The brake fluid level should be
between the MAX and MIN lines
on the reservoir.
NOTICE
■When adding engine coolant
Coolant is neither plain water nor stra ight 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 damage to parts or paint.
CAUTION
■When the engine is hot
Do not touch the radiator or condenser as they may be hot and may cause
burns.

273
4-3. Do-it-yourself maintenance
4
Maintenance and care
13 ECU-B
7.5 ADaytime running light system, front
passenger occupant classification
system, power windows, door lock
system, theft deterrent system,
meter and gauge, traction control
system, vehicle stability control
system
14 ALT-S 7.5 A Charging system
15 ETCS 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, electronic throttle control
system
16 HAZ 10 ATurn signal lights, emergency
flashers
17 H-LP RH/H-LP
LO RH 10 A Right-hand headlight
18 H-LP LH/H-LP
LO LH 10 A Left-hand headlight
19 EFI2 10 AMultiport fuel injection system/
sequential multiport fuel injection
system
20 HTR SUB2 40 A Air conditioning system
21 EPS 50 A Electric power steering system
22 ABS1/VSC1 50 A Anti-lock brake system, vehicle sta-
bility control system
23 HTR 40 A Air conditioning system
24 RDI 30 A Electric cooling fan
25 HTR SUB1 30 A Air conditioning system
26 H-LP CLN/PWR
HTR 30 A No circuit
27 AMT 50 A No circuit
FuseAmpereCircuit

276 4-3. Do-it-yourself maintenance
9 ID/UP/MIR HTR 10 AMultiport fuel injection system/
sequential multiport fuel injection
system, outside rear view mirror
control, outside rear view mirror
heaters
10 IGN 7.5 A Multiport fuel injection system/
sequential multiport fuel injection
system, SRS airbag system, front
passenger occupant classification
system
11 MET 7.5 A Meter and gauge
12 WIP 25 A Windshield wiper and washer
13 RR WIP 15 A No circuit
14 WSH 15 A Windshield wiper and washer
15 ECU-IG 10 A Daytime running light system, anti-
lock brake system, electric power
steering system, power windows,
door lock system, vehicle stability
control system, electric cooling fan,
meter and gauge
16 GAUGE 10 A Charging system, turn signal lights,
emergency flashers, back-up
lights, instrument panel light con-
trol, shift lock system, rear window
defogger, air conditioning system,
automatic transmission system
17 OBD2 7.5 A On-board diagnosis system
18 STOP 10 A Stop lights, high mounted stop-
light, multiport fuel injection sys-
tem/sequential multiport fuel
injection system, shift lock system,
anti-lock brake system
19 D/L 25 A Door lock system
FuseAmpereCircuit