2001 SUBARU IMPREZA air condition

4-10c lean b ec ause c ooling p erformanc e is imp aired b y an
y ac c umulation
of insec ts and leaves on the c ond enser. Efficient cooling after parking in direct sunlight
After p arking in d irec t sunlig ht, d rive with the wi nd ows op en for a few
minutes to allow outsid e air to c irc ulate into the heated interior. This re-
sults in q uic ker c ooling b y the air c ond itioner. Ke ep the wind ows
c losed d uring the op eration of the air c ond itioner for maximum c ooling
effic ienc y. Lubrication oil circulation in the refrigerant circuit
Op erate the air c ond itioner c omp ressor at a low eng ine sp eed (at id le
or low d riving sp eed s) a few minutes eac h month d ur ing the off-sea-
son to c irc ulate its oil. Checking air conditioning system before summer season
Chec k the air c ond itioner unit for refrig erant leak s, hose c ond itions,
and p rop er op eration eac h sp ring . This c hec k is b es t p erformed b y
your SUBARU d ealer. Cooling and dehumidifying in high humidity and low tempera- ture weather condition
Und er c ertain weather c ond itions (hig h relative hum id ity, low temp era-
tures, etc .) a small amount of water vap or emission from the air outlets
may b e notic ed d uring c ooling or d ehumid ifying . Thi s c ond ition is nor-
mal and d oes not ind ic ate any p rob lem with the air c ond itioning sys-
tem. Air conditioner compressor shut-off when engine is heavily loaded
To imp rove ac c eleration and g as mileag e, the air c o nd itioner c om-
p ressor is d esig ned to temp orarily shut off d uring air c ond itioner op -
eration whenever the ac c elerator is fully d ep ressed . Suc h as d uring
rap id ac c eleration or when d riving on a steep up g ra d e.
Refrigerant for your climate control system
Your air c ond itioner uses ozone friend ly refrig eran t HFC134a. There-
fore, the method of ad d ing , c hang ing or c hec king th e refrig erant is
d ifferent from the method for CFC12 (freon). Consul t your SUBARU

Climate control4-11
–
CONTINUED –
d ealer for servic e. Rep airs need ed as a result of
using the wrong re-
frig erant are not c overed und er warranty.
Air filtration system (if equipped)
If your vehic le ’s air c ond itioning system is eq uip p ed with a op tion al air
filtration system, rep lac e the filter element ac c or d ing to the rep lac ement
sc hed ule shown b elow. This sc hed ule should b e follo wed to maintain the
filter ’s d ust c ollec tion ab ility. Und er extremely d usty c o nd itions, the filter
should b e rep lac ed more freq uently. Sinc e the filte r element is a visc ous
typ e, it is unnec essary to c lean or wash the elemen t. It is rec ommend ed
that you have your filter c hec ked or rep lac ed b y yo ur SUBARU d ealer.
For rep lac ement, use only a g enuine SUBARU air filt er kit.
Replacement schedule: Every 12 months or 7,500 miles (12,000 km) whichever comes first
NOTE The filter can influence the air conditioning, heating and defroster performance.
Replacement procedure
HS0254
HS0253
Screws
Old filter
Cooling unit
Filter cover and rubber seal
1. Remove the filter c over b y removing the two (2) s c rews.
2. Remove the old filter.

6-20
Barometer
HS6004CB
The d isp lay ind ic ates atmosp heric p ressure in the p asseng er
c omp artment. Range : 21.26 to 30.86 inHg or 720 to 1045 hp a
NOTE The reading may change during air-conditioner operation,
door window operation, driving in a tunnel, and so forth. All barometric readings reported in local weather reports are
corrected to a sea-level reading regardless of altitude. The Gauge
Pack displays true local air pressure and hence may differ signifi-cantly from local weather reports (especially at higher altitudes).The barometer is not adjustable. Since air pressure changes with altitude, the barometric read-
ing will vary when the vehicle is moving up or down an incline.For accurate barometric trending, the vehicle should be station-
ary. Altimeter
The altimeter has two mod es, Stand ard elevation mod e and Relative
elevation mod e.

6-22NOTE
The indication may change during air-conditioner operation,
door window operation, driving in a tunnel, and so forth. Adjustable elevation is 780 ft ( 300 m).
To cancel the adjustment and return to the default altimeter
reading, press the “ SET” and “ ” switch together for 1 second
or more. n Relative elevation mode
HS6015BB
The altimeter ind ic ates the relative elevation.
1. The “MODE ” switc h c hang es the stand ard elevation mod e to the
relative elevation mod e.
2. Press the “ SET ” switc h for the “0 ” ft ” ( “0 m ”) setting .
3. The d isp lay shows the c urrent elevation relative to the starting
elevation. Range : up to 9800 ft (3000 m) at a p itc h of 20 ft (5 m)

8-4
Jump starting
WARNING
Battery fluid is SULFURIC ACID. Do not let it come in contact
with the eyes, skin, clothing or the vehicle. If battery fluid gets on you, thoroughly flush the exposed area
with water immediately. Get medical help if the fluid has enteredyour eyes.If battery fluid is accidentally swallowed, immediately drink a
large amount of milk or water, and obtain immediate medicalhelp.
Keep everyone including children away from the battery. The gas generated by a battery explodes if a flame or spark is
brought near it. Do not smoke or light a match while jump start-ing. Never attempt jump starting if the discharged battery is frozen.
It could cause the battery to burst or explode. Whenever working on or around a battery, always wear suit-
able eye protectors, and remove metal objects such as rings,
bands or other metal jewelry. Be sure the jumper cables and clamps on them do not have
loose or missing insulation.Do not jump start unless cables in suitable condition are avail-able. A running engine can be dangerous. Keep your fingers, hands,
clothing, hair and tools away from the cooling fan, belts and anyother moving engine parts. Removing rings, watches and ties isadvisable.
CAUTION
The battery used for boosting must be 12V. Do not jump start un-
less you are sure that the booster battery is correct.