2006 SUBARU IMPREZA oil

4
Climate control
Ventilator ............................................................. 4-2
Air flow selection ................................ .................... 4-2
Center and side ventilators ....................... ............. 4-3
Manual climate control system (if equipped) ..................................... ............... 4-3
Control panel ..................................... ..................... 4-3
Heater operation .................................. ................... 4-5
Air conditioner operation (if equipped) ........... ..... 4-7
Automatic climate control system (if equipped) ..................................... ............... 4-7
Control panel ..................................... ..................... 4-8
To use as full-automatic climate control
system ............................................ ....................... 4-8
To use as semi-automatic climate control system ............................................ ....................... 4-8
Fan speed control dial ............................ ............... 4-8
Temperature control dial .......................... .............. 4-9
Air flow control dial ............................. ................... 4-9
Air inlet selection button ........................ ................ 4-9
Air conditioner button ............................ ................ 4-10
Temperature sensors ............................... .............. 4-10
Operating tips for heater and air conditioner ....................................... ............... 4-11
Cleaning ventilation grille ....................... ............... 4-11
Efficient cooling after parking in direct sunlight .......................................... ....................... 4-11
Lubrication oil circulation in the refrigerant
circuit ........................................... ......................... 4-11Checking air conditioning system before
summer season ..................................... ............... 4-11
Cooling and dehumidifying in high humidity and
low temperature weather conditions ................ .. 4-11
Air conditioner compressor shut-off when engine is heavily loaded .......................... ............ 4-12
Refrigerant for your climate control system ....... . 4-12
Air filtration system ............................. ............... 4-12
Replacing an air filter ........................... .................. 4-12

Climate control 4-11
– CONTINUED –
–
Do not subject the sensors to impact.
– Keep water away from the sensors.
– Do not cover the sensors.
The sensors are located as follows: – Solar sensor: beside windshield de-
froster grille – Interior air temperature sensor: beside
the fan speed control dial– Outside temperature sensor: behind
front grille.
Operating tips for heater and
air conditioner
Cleaning ventilation grille
Always keep the front ventilation inlet
grille free of snow, leaves, or other ob-
structions to ensure efficient heating and
defrosting. Since the condenser is located
in front of the radiator, this area should be
kept clean because cooling performance
is impaired by any accumulation of insects
and leaves on the condenser.
Efficient cooling after parking
in direct sunlight
After parking in direct sunlight, drive with
the windows open for a few minutes to al- low outside air to circulate into the heated
interior. This results in quicker cooling by
the air conditioner. Keep the windows
closed during the operation of the air con-
ditioner for maximum cooling efficiency.
Lubrication oil circulation in
the refrigerant circuit
Operate the air conditioner compressor at
a low engine speed (at idle or low driving
speeds) a few minutes each month during
the off-season to circulate its oil.
Checking air conditioning
system before summer sea-
son
Check the air conditioner unit for refriger-
ant leaks, hose conditions, and proper op-
eration each spring. This check is best
performed by your SUBARU dealer.
Cooling and dehumidifying in
high humidity and low tem-
perature weather conditions
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
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6-6 Interior equipment
Cigarette lighter socket
A cigarette lighter socket can be found be-
hind the ashtray lid under the climate con-
trols. Push gently on the lid to open it. A
cigarette lighter plug is an optional acces-
sory. It is available from your SUBARU
dealer.
The cigarette lighter socket may also be
used as a power source for an in-car use
electrical appliance.
Do not place any foreign objects,
especially metal ones such as
coins or aluminum foil, into the
accessory power outlet. That
could cause a short circuit. Al-
ways put the cap on the accesso-
ry power outlet when it is not in
use.
Use only electrical appliances
which are designed for 12V DC
and which consume less than
120W. Overloading the accessory
power outlet can cause a short
circuit. Do not use double adapt-
ers or more than one electrical ap-
pliance.
If the plug on your electric appli-
ance is either too loose or too
tight for the accessory power out-
let, this can result in a poor con-
tact or cause the plug to get stuck.
Only use plugs that fit properly.
Use of an electric appliance in the
accessory power outlet for a long
period of time while the engine is
not running can cause battery dis-
charge.
Before driving your vehicle, make
sure that the plug and the cord on
your electrical appliance will not
interfere with your shifting gears
and operating the accelerator and
brake pedals. If they do, do not
use the electrical appliance while
driving.
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Interior equipment 6-7
– CONTINUED –
Use with a cigarette lighter
The cigarette lighter operates only when
the ignition switch is in the “ON ” and
“ ACC ” positions.
To use the cigarette lighter, push in the
knob and wait a few moments. It will auto-
matically spring up when ready for use.
Using as an accessory power
outlet
Electrical power (12V DC) from the battery
is available at the socket when the ignition
switch is either in the “ACC ” or “ON ” posi-
tion.
If you use the socket as an accessory
power outlet, take the following precau-
tions.
When the socket is not in use, always put
the cap on the socket to prevent any for-
eign object from entering it.
The electrical power outlet locat-
ed on the lower part of the instru-
ment panel is originally designed
to use a genuine SUBARU ciga-
rette lighter plug. Do not use non-
genuine cigarette lighter plugs in
the socket. Doing so may cause a
short-circuit and overheating, re-
sulting in a fire.
If the socket is ever used for a
plug-in accessory such as a mo-
bile phone, that may damage the
portion of the socket ’s internal
mechanism that causes a ciga-
rette lighter plug to “pop out ” af-
ter its lighter element is heated.
Therefore, do not place a cigarette
lighter plug in a socket that has
been used, even once, to power a
plug-in accessory. Doing so may
cause the plug to stick and over-
heat, creating a potential fire haz-
ard.
Do not place any foreign objects,
especially metal ones such as
coins or aluminum foil, into the
socket. That could cause a short
circuit.
To avoid being burned, never grasp
the lighter by the end with the heat-
ing element. Doing so could result
in injury and could also damage the
heating element.
600526
Do not hold the lighter pushed in,
because it will overheat.
Use only in-car use electrical ap-
pliances which are designed for
12V DC and which consume less
than 120W. Overloading the sock-
et can cause a short circuit. Do
not use double adapters or more
than one electrical appliance.

7-6 Starting and operating
The EPA has issued regulations for in-
specting the On-Board Diagnostic (OBD)
system as part of the state emissions in-
spection. The OBD system is designed to
detect engine and transmission problems
that might cause vehicle emissions to ex-
ceed allowable limits. These inspections
apply to all 1996 model year and newer
passenger cars and light trucks. Over 30
states plus the District of Columbia have
implemented the OBD system inspection.
The inspection of the OBD system con-
sists of a visual operational check of the “ CHECK ENGINE ” warning light/malfunc-
tion indicator lamp (MIL) and an examina-
tion of the OBD system with an electronic
scan tool while the engine is running.
A vehicle passes the OBD system in-
spection if proper the “CHECK ENGINE ”
warning light/MIL illumination is observed,
there is no stored diagnostic trouble
codes, and the OBD system readiness
monitors are complete.
A vehicle fails the OBD inspection if the
“ CHECK ENGINE ” warning light/MIL is
not properly operating or there is one or
more diagnostic trouble codes stored in
vehicle ’s computer with the “CHECK EN-
GINE ” warning light/MIL illuminated.
A state emission inspection may reject
(not pass or fail) a vehicle if the number of
OBD system readiness monitors “Not
Ready ” is greater than one. Under this
condition, the vehicle operator should be
instructed to drive his/her vehicle for a few
days to set the monitors and return for an
emission re-inspection.
Owners of rejected or failing vehicles
should contact their Subaru Dealer for
service.
Preparing to drive
You should perform the following checks
and adjustments every day before you
start driving.
1. Check that all windows, mirrors, and
lights are clean and unobstructed.
2. Check the appearance and condition of
the tires. Also check tires for proper infla-
tion.
3. Look under the vehicle for any sign of
leaks.
4. Check that the hood, trunk (Sedan)
and rear gate (Wagon) are fully closed.
5. Check the adjustment of the seat.
6. Check the adjustment of the inside and
outside mirrors.
7. Fasten your seatbelt. Check that your
passengers have fastened their seatbelts.
8. Check the operation of the warning and
indicator lights when the ignition switch is
turned to the “ON ” position.
9. Check the gauges, indicator and warn-
ing lights after starting the engine.
NOTE
Engine oil, engine coolant, brake fluid,
washer fluid and other fluid levels
should be checked daily, weekly or at
fuel stops.
Resultant vehicle damage due to im-
proper testing is not covered under
the SUBARU Limited Warranty and
is the responsibility of the state in-
spection program or its contractors
or licensees.

7-26 Starting and operating
When parking on a hill, always turn the
steering wheel. When the vehicle is head-
ed up the hill, the front wheels should be
turned away from the curb.
When facing downhill, the front wheels
should be turned into the curb.
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700137
Never leave unattended children
or pets in the vehicle. They could
accidentally injure themselves or
others through inadvertent opera-
tion of the vehicle. Also, on hot or
sunny days, the temperature in a
closed vehicle could quickly be-
come high enough to cause se-
vere or possibly fatal injuries to
people.
Do not park the vehicle over flam-
mable materials such as dry
grass, waste paper or rags, as
they may burn easily if they come
near hot engine or exhaust sys-
tem parts.
Be sure to stop the engine if you
take a nap in the vehicle. If engine
exhaust gas enters the passenger
compartment, occupants in the
vehicle could die from carbon
monoxide (CO) contained in the
exhaust gas.
If your vehicle has a front under-
spoiler and rear underspoiler (both
optional), pay attention to blocks
and other obstructions on the
ground when parking. The under-
spoilers could be damaged by con-
tact with them.

Driving tips 8-7
with your fingers and thumbs on the out-
side of the rim.
If driving through water, such as when
crossing shallow streams, first check the
depth of the water and the bottom of the
stream bed for firmness and ensure that
the bed of the stream is flat. Drive slowly
and completely through the stream. The
water should be shallow enough that it
does not reach the vehicle ’s undercar-
riage. Water entering the engine air intake
or the exhaust pipe or water splashing
onto electrical parts may damage your ve-
hicle and may cause it to stall. Never at-
tempt to drive through rushing water; re-
gardless of its depth, it can wash away the
ground from under your tires, resulting in
possible loss of traction and even vehicle
rollover.
Always check your brakes for effective-
ness immediately after driving in sand,
mud or water. Do this by driving slowly
and stepping on the brake pedal. Repeat
that process several times to dry out the
brake discs and brake pads.
Do not drive or park over or near flam-
mable materials such as dry grass or fall-
en leaves, as they may burn easily. The
exhaust system is very hot while the en-
gine is running and right after the engine
stops. This could create a fire hazard.
After driving through tall grass, mud, rocks, sand, rivers, etc., check that there
is no grass, bush, paper, rags, stones,
sand, etc. adhering to or trapped on the
underbody. Clear off any such matter from
the underbody. If the vehicle is used with
these materials trapped or adhering to the
underbody, a mechanical breakdown or
fire could occur.
Secure all cargo carried inside the vehi-
cle and make certain that it is not piled
higher than the seatbacks. During sudden
stops or jolts, unsecured cargo could be
thrown around in the vehicle and cause in-
jury. Do not pile heavy loads on the roof.
Those loads raise the vehicle ’s center of
gravity and make it more prone to tip over.
If you must rock the vehicle to free it
from sand or mud, depress the accelera-
tor pedal slightly and move the selector le-
ver back and forth between “D ” and “R ” re-
peatedly. Do not race the engine. For the
best possible traction, avoid spinning the
wheels when trying to free the vehicle.
When the road surface is extremely slip-
pery, you can obtain better traction by
starting the vehicle with the transmission
in 2nd than 1st (both for MT and AT).
Never equip your vehicle with tires larg-
er than those specified in this manual.
Frequent driving of an AWD vehicle un-
der hard-driving conditions such as rough
roads or off roads will necessitate more frequent replacement of engine oil, brake
fluid and transmission oil than that speci-
fied in the maintenance schedule de-
scribed in the
“Warranty and Maintenance
Booklet ”.
Remember that damage done to your
Subaru while operating it off-road and not
using common sense precautions such as
those listed above is not eligible for war-
ranty coverage.
Wash the vehicle ’s underbody after off-
road driving. Suspension components are
particularly prone to dirt buildup, so they
need to be washed thoroughly.

8-8 Driving tips
Winter driving
Operation during cold weath-
er
Carry some emergency equipment, such
as tire chains, a window scraper, a bag of
sand, flares, a small shovel, and jumper
cables.
Check the battery and cables. Cold tem-
peratures reduce battery capacity. The
battery must be in good condition to pro-
vide enough power for cold winter starts.
Use an engine oil of proper grade and vis-
cosity for cold weather. Heavy summer oil
will cause harder starting.
Keep the door locks from freezing by squirting them with deicer or glycerin.
Forcing a frozen door open may damage
or separate the rubber weather strips
around the door. If the door is frozen, use
hot water to melt the ice, and afterwards
thoroughly wipe the water away.
Use a windshield washer fluid that con-
tains an antifreeze solution. Do not use
engine antifreeze or other substitutes be-
cause they may damage the paint of the
vehicle.
SUBARU Windshield Washer Fluid con-
tains 58.5% methyl alcohol and 41.5%
surfactant, by volume. Its freezing temper-
ature varies according to how much it is di-
luted, as indicated in the following table.
In order to prevent freezing of washer flu-
id, check the freezing temperatures in the
table above when adjusting the fluid con-
centration to the outside temperature.
If you fill the reservoir tank with a fluid with
a different concentration from the one
used previously, purge the old fluid fromthe piping between the reservoir tank and
washer nozzles by operating the washer
for a certain period of time. Otherwise, if
the concentration of the fluid remaining in
the piping is too low for the outside tem-
perature, it may freeze and block the noz-
zles.
Before driving your vehicle
Before entering the vehicle, remove any
snow or ice from your shoes because that
could make the pedals slippery and dan-
gerous.
While warming up the vehicle before driv-
ing, check that the accelerator pedal,
brake pedal, and all other controls operate
smoothly.
Clear away ice and snow that has accu-
mulated under the fenders to avoid mak-
ing steering difficult. During severe winter
driving, stop when and where it is safe to
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Washer Fluid
Concentration Freezing
Temperature
30% 10.4 F ( –12 C)
50% –4F ( –20 C)
100% –49 F ( –45 C)
Adjust the washer fluid concentra-
tion appropriately for the outside
temperature. If the concentration is
inappropriate, sprayed washer fluid
may freeze on the windshield and
obstruct your view, and the fluid
may freeze in the reservoir tank.