air conditioning SUBARU BRZ 2018 Owner's Manual

300 3-1. Using the air conditioning system and defogger
BRZ_U (A4450BE-A)
■Using automatic mode
Fan speed is adjusted automatically according to the temperature setting
and the ambient conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow
immediately after is pressed.
■ Fogging up of the windows
●The windows will easily fog up when the humidity in the vehicle is high.
Turning on will dehumidify the air from the outlets and defog the
windshield effectively.
● If you turn
off, the windows may fog up more easily.
● The windows may fog up if the recirculated air mode is used.
■ Outside/recirculated air mode
●When driving on dusty roads such as tunnels or in heavy traffic, set the
outside/recirculated air mode button to the recirculated air mode. This is
effective in preventing outside air from entering the vehicle interior. Dur-
ing cooling operation, setting the recirc ulated air mode will also cool the
vehicle interior effectively.
● Outside/recirculated air mode may automatically switch depending on
the temperature setting or the inside temperature.
■ When the outside temperature falls to nearly 32 °F (0 °C)
The dehumidification function may not operate even when
is
pressed.

301
3-1. Using the air conditioning system and defogger
3
Interior features
BRZ_U (A4450BE-A)
■
Ventilation and air conditioning odors
● To let fresh air in, set the air condi tioning system to the outside air mode.
● 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.
• The start timing of the blower may be delayed for a short period of time immediately after the air conditioni ng system is started in automatic
mode.
■ Air conditioning filter
→ P. 389
WARNING
■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.
CAUTION
■To prevent battery discharge
Do not leave the air conditioning sy stem on longer than necessary when the
engine is stopped.

302
3-1. Using the air conditioning system and defogger
BRZ_U (A4450BE-A)
Rear window and outside rear view mirror defoggers
The rear window defogger is used to defog the rear window. The out-
side rear view mirror defoggers* are used to remove frost, dew or
raindrops from the outside rear view mirrors.
Vehicles with a manual air conditioning system On/off
The defoggers will automati-
cally turn off after approxi-
mately 15 minutes.
Vehicles with an automatic air conditioning systemOn/off
The defoggers will automati-
cally turn off after approxi-
mately 15 minutes.
*: Vehicles with outside rear view mirror defoggers

303
3-1. Using the air conditioning system and defogger
3
Interior features
BRZ_U (A4450BE-A)
■
The defoggers can be operated when
Vehicles without a keyless access with push button start system
The engine switch is in the “ON” position.
Vehicles with a keyless access with push button start system
The push-button ignition switch is in “ON” mode.
■ The outside rear view mirror defoggers (vehicles with outside rear view
mirror defoggers)
Turning the rear window defogger on will turn the outside rear view mirror
defoggers on.
■ When continuous operation is set (vehicles with an automatic air con-
ditioning system)
During continuous operation, the defogger stops operating for 2 minutes
after every 15 minutes of continual operation. Even during the 2 minutes that
operation stops, the operating light remains illuminated. The rear window
defogger will continue to operate in this cycle until it is turned off.
■ Customization that can be configured at SUBARU dealer (vehicles with
an automatic air conditioning system)
The rear window defogger can be set to 15-minute operation or continuous
operation. (Customizable features →P. 522)
WARNING
■When the outside rear view mirror defoggers are on (vehicles with out-
side rear view mirror defoggers)
Do not touch the outside surface of the rear view mirrors, as they can
become very hot and burn you.
CAUTION
■To prevent battery discharge
Do not leave the rear window defogger on longer than necessary when the
engine is stopped.

Maintenance and care4
335
BRZ_U (A4450BE-A)
4-1. Maintenance and careCleaning and protecting the vehicle exterior......... 336
Cleaning and protecting the vehicle interior.......... 342
Cleaning and protecting the Alcantara
® area ....... 346
4-2. Maintenance Maintenance requirements .................. 348
General maintenance....... 351
Emission inspection and maintenance (I/M)
programs........................ 354 4-3. Do-it-yourself
maintenance
Do-it-yourself service precautions .................... 355
Engine hood ..................... 358
Engine compartment ........ 360
Tires ................................. 374
Tire inflation pressure ...... 382
Wheels ............................. 386
Air conditioning filter......... 389
Transmitter/ access key battery ......... 392
Checking and replacing fuses .............................. 397
Light bulbs........................ 405

344 4-1. Maintenance and care
BRZ_U (A4450BE-A)
CAUTION
■Cleaning detergents
●Do not use organic substances such as benzene or gasoline, acidic or
alkaline solutions, dye, bleach or other detergent. Doing so may discolor
the vehicle interior or cause streaks or damage to painted surfaces.
● Do not use polish wax or polish cleaner. The instrument panel's or other
interior part’s painted surface may be damaged.
● Do not use a chemical agent containing silicone (highly-polymerized sili-
con compound) when cleaning any of the electrical appliances such as the
air conditioning, all switches and their surrounding areas.
If silicon (highly-polymerized silicon compound) contacts these compo-
nents, it may cause the electrical appliances to malfunction.
■ Preventing damage to leather surfaces
Observe the following precautions to avoid damage to and deterioration of
leather surfaces.
●Remove any dust, dirt, sand, oil spots etc. on leather surfaces immedi-
ately.
● Do not expose the vehicle to direct sunlight for extended periods of time.
Park the vehicle in the shade, especially during summer.
● Do not place items made of vinyl, plastic, or that contain wax on the uphol-
stery, as they may stick to the leather surface if the vehicle interior heats
up significantly.
■ Water on the floor
Do not wash the vehicle floor with water.
Vehicle systems such as the audio system may be damaged if water comes
into contact with electrical components under the floor of the vehicle, and
may also cause the body to rust.

357
4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
WARNING
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 in 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.
■ When working near the electric cooling fans or radiator grille
Vehicles without a keyless access with push button start system: Be sure the
engine switch is off. With the engine switch in the “ON” position, the electric
cooling fans may automatically start to run if the air conditioning is on and/or
the coolant temperature is high. ( →P. 366)
Vehicles with a keyless access with push button start system: Be sure the
push-button ignition switch is off. With the push-button ignition switch in
“ON” mode, the electric cooling fans may automatically start to run if the air
conditioning is on and/or the coolant temperature is high. ( →P. 366)
■ Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from
getting in the eyes.
CAUTION
■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 compart-
ment.

389
4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
Air conditioning filter
The air conditioning filter must be changed regularly to maintain air
conditioning efficiency.
■Removal method
Vehicles without a keyless access with push button
start system
Turn the engine switch off.
Vehicles with a keyless access with push button start
system
Turn the push-button ignition switch off. Open the glove box. Slide off
the damper.
Push in each side of the glove
box and pull the glove box
toward you to disconnect the
claws.
STEP 1
STEP 2
STEP 3

390 4-3. Do-it-yourself maintenance
BRZ_U (A4450BE-A)
Lower the glove box slowly
until surface is horizontal
with the floor, then pull it out.
(Simply pulling with gentle
force will disengage the lower
claws.)Lower claw
Lower claw engagement
point
Do not forcibly pull the glove
box. Otherwise, the lower
claws or the lower claw
engagement points may be
deformed, making it difficult to
reinstall or close the glove box.
Remove the filter cover.
Remove the air conditioning
filter and replace it with a new
one.
The “ ↑UP” marks shown on
the filter should be pointing up.
When installing, reverse the steps listed.
STEP 4
STEP 5
STEP 6
STEP 7

391
4-3. Do-it-yourself maintenance
4
Maintenance and care
BRZ_U (A4450BE-A)
■
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 “Warranty and Maintenance Booklet” [except for Canada] or “Warranty
and Service Booklet” [for Canada].)
■ If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
CAUTION
■When removing the glove box
Do not forcibly pull the glove box. Otherwise, the lower claws or the lower
claw engagement points may be deformed, making it difficult to reinstall or
close the glove box.
■ When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the
system.