cooling TOYOTA xD 2012 Owners Manual (in English)

177
3-1. Using the air conditioning system
and defogger
3
Interior features
Scion_xD_U_(OM52C20U)
Air flows to the feet and the
windshield defogger operates.
Set the air intake selection knob
to (outside air) mode.
Pressing to turn the cooling
and dehumidification function on
clears the windshield and side
windows faster.
Air flows to the windshield and
side windows.
Set the air intake selection knob
to (outside air) mode.
Pressing to turn the cooling
and dehumidification function on
clears the windshield and side
windows faster.
■Selecting the air intake modes
Turn air intake selection knob to (outside air) mode or
(recirculated air) mode.

180 3-1. Using the air conditioning system and defogger
Scion_xD_U_(OM52C20U)
■Using the system in recirculated air mode
The windows will fog up more easily if recirculated air mode is used for an
extended period of time.
■ 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 temperature setting.
■ When outside air temperature is below 32°F (0°C)
The cooling and dehumidification function may not operate even when

is pressed.
■ Air conditioning odors
● During 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.
● 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.
CAUTION
■ To prevent the windshield from fogging up
Do not use during cool air operation in extremely humid weather. The
difference between the temperature of the outside air and that of the wind-
shield can cause the outer surface of the windshield to fog up, blocking your
vision.
NOTICE
■To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the
engine is stopped.

217
4-3. Do-it-yourself maintenance
4
Maintenance and care
Scion_xD_U_(OM52C20U)
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 and 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.
■ When working near the electric c ooling fans or radiator grille
Be sure the engine switch is off. 
With the ignition on, the electric cooling fans may automatically start to run if
the air conditioning is on and/or the coolant temperature is high. ( P. 229)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting 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. Also, a backfire could cause a fire in the engine com-
partment.

222
4-3. Do-it-yourself maintenance
Scion_xD_U_(OM52C20U)
Engine compar tment
Washer fluid tank (P. 234)
Engine oil filler cap 
(  P. 224)
Brake fluid reservoir 
(  P. 229)
Battery ( P. 232)
Fuse box ( P. 256)Radiator ( P. 229)
Condenser ( P. 229)
Electric cooling fan
Engine coolant reservoir 
(  P. 227)
Engine oil level dipstick 
(  P. 223)

227
4-3. Do-it-yourself maintenance
4
Maintenance and care
Scion_xD_U_(OM52C20U)
Engine coolant
The coolant level is satisf actory if it is between the “F” and “L” lines on
the reservoir when the engine is cold.
Reservoir cap
Full
Low
If the level is on or below the “L”
line, add coolant up to the “F” line.
(P. 326)
■ 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% coolant and 50% deionized water. (Minimum temperature: -31 F [-35 C])
Canada: “Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized water. (Minimum temperature: -44 F [-42 C])
For more details about engine coolant, contact your Scion dealer.
■ If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock
and water pump. 
If you cannot find a leak, have your Scion dealer test the cap and check for
leaks in the cooling system.

228 4-3. Do-it-yourself maintenance
Scion_xD_U_(OM52C20U)
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 serious injuries, such as burns.
NOTICE
■ When adding coolant
Coolant is neither plain water nor strai ght 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 damaging parts or paint.

261
4-3. Do-it-yourself maintenance
4
Maintenance and care
Scion_xD_U_(OM52C20U)
FuseAmpereCircuit
9 ABS1/VSC1 50 A ABS, VSC
10 HTR 40 A Air conditioning system 11 RDI 30 A Electric cooling fan
12HTR SUB130 A Air conditioning system
13 H-LP CLN/PWR
HTR 30 A Air conditioning system
14 FR DEF 20 A No circuit
15 ABS2/VSC2 30 A ABS, VSC
16 H-LP MAIN 30 A No circuit
17 ST 30 A Starting system
18 S-LOCK 20 A No circuit
19 DOME 15 A Interior light, personal lights, lug-
gage compartment light
20 ECU-B 7.5 A SRS airbag system, power win-
dows, gauges and meters, air con-
ditioning system
21ALT-S7.5 A Charging system
22 ETCS 10 A Multi-port fuel injection system/
sequential multi-port fuel injection
system

264 4-3. Do-it-yourself maintenance
Scion_xD_U_(OM52C20U)
*1: Vehicles sold in Canada
Fuse nameAmpereCircuit
10 IGN 7.5 A Multi-port fuel injection system/
sequential multi-port fuel injection
system
11 MET 7.5 A Gauges and meters
12 WIP 20 A Windshield wipers
13 RR WIP 15 A Rear window wiper
14 WSH 15 A Windshield washers, rear window
washer
15 ECU-IG 10 A ABS, electric cooling fan, EPS
16 GAUGE 10 A Charging system, back-up lights,
air conditioning system, gauges
and meters
17 OBD2 7.5 A On-board diagnosis system
18 STOP 10 A Stop lights, high mounted stop-
light, multi-port fuel injection sys-
tem/sequential multi-port fuel
injection system, ABS, VSC, shift
lock system
19 D/L 25 A Power door lock system
20 FR FOG 15 A No circuit
21 AM1 25 A “ACC”, “CIG” fuses

5
When trouble arises
325
5-2. Steps to take in an emergency
Scion_xD_U_(OM52C20U)
CAUTION
■
To prevent damage to the vehicle
Do not pull- or push-start the vehicle as the three-way catalytic converter
may overheat and become a fire hazard.
NOTICE
■When handling jumper cables
When connecting the jumper cables, ensure that they do not become entan-
gled in the cooling fans or belt.
■ To prevent damage to the engine cover
● When removing the cover, make sure that you pull the cover towards you
after lifting the front edge to remove the fixed pins.
● When installing the cover, do not force the cover or subject it to strong
shocks.

326
5-2. Steps to take in an emergency
Scion_xD_U_(OM52C20U)
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the air condi-
tioning system.
Check to see if steam is coming out from under the hood.
If you see steam: 
Stop the engine. Carefully lift the hood after the steam
subsides and then restart the engine.
If you do not see steam: 
Leave the engine running and carefully lift the hood.
Check to see if the cooling fans are operating.
If the fans are operating: 
Wait until the high coolant temperature warning light
goes off and then stop the engine.
If the fans are not operating: 
Stop the engine immediately and call your Scion dealer.
After the engine has cooled
down sufficiently, check the
engine coolant level and
inspect the radiator core (radi-
ator) for any leaks.STEP 1
STEP 2
STEP 3
STEP 5 STEP 4