Subaru WRX & WRX STI Manuals 2018 WRX & WRX STI Owner’s Manual | Page 234

4-10
Climate control/Air filtration system
& Cooling and dehumidifying in
high humidity and low tem-
perature weather conditions
& Refrigerant for your climate
control system
Your vehicle’s air conditioning system is
equipped with an air filtration system.
Replace the cabin air filter element ac-
cording to the replacement schedule
found in the “Warranty and Maintenance
Booklet”. This schedule should be fol-
lowed to maintain the filter’s dust collec-
tion ability. Under extremely dusty condi-
tions, the filter should be replaced more
frequently. Have your filter checked or
replaced by your SUBARU dealer. For
replacement, use only a genuine
SUBARU air filter kit.
Under certain weather conditions (high
relative humidity, low temperatures, etc.) a
small amount of water vapor emission
from the air outlets may be noticed. This
condition is normal and does not indicate
any problem with the air conditioning
system.
& Air conditioner compressor
shut-off when engine is
heavily loaded
To improve acceleration and gas mileage,
the air conditioner compressor is designed
to temporarily shut off during air condi-
tioner operation whenever the accelerator
is fully depressed such as during rapid
acceleration or when driving up a steep
incline.
Air filtration system
1)
Air conditioner label
Your air conditioner uses ozone friendly
refrigerant HFC134a (as shown on the air
conditioner label). Therefore, the method
of adding, changing or checking the
refrigerant is different from the method
for CFC12 (freon). Consult your SUBARU
dealer for service. Repairs needed as a
result of using the wrong refrigerant are
not covered under warranty.
CAUTION
Contact your SUBARU dealer if the
following occurs, even if it is not yet
time to change the filter:
. Reduction of the airflow through
the vents.
. Windshield gets easily fogged or
misted.
NOTE
The filter can influence the air condi-
tioning, heating and defroster perfor-
mance if not properly maintained.