2009 SUBARU LEGACY check engine light

!For 4-speed automatic transmis-
sion vehicles
This light illuminates when All-Wheel
Drive is disengaged and the drive me-
chanism is switched to Front Wheel Drive
for maintenance or similar purposes.
This light flashes if the vehicle is driven
with tires of different diameters fitted on its
wheels or with the air pressure exces-
sively low in any of its tires. & Vehicle Dynamics
Control operation indi-
cator light (if equipped)
This light illuminates when the ignition
switch is ON and goes out approximately
2 seconds later.
It blinks when the skid suppression func-
tion is activated. It illuminates when only
the traction control function is operating.
The Vehicle Dynamics Control system is
probably faulty under any of the following
conditions. Have your vehicle checked at
a SUBARU dealer immediately. .The light does not illuminate when the
ignition switch is turned to the “ON ”
position.. The light does not go out even after a
period of approximately 2 seconds after
the ignition switch has been turned to the“ ON ”position. &
Vehicle Dynamics
Control warning light (if
equipped)/Vehicle Dy-
namics Control OFF in-
dicator light (if equipped)
This warning light has both the function of
indicating faults in the Vehicle Dynamics
Control system and the function of indicat-
ing that the Vehicle Dynamics Control
system has been deactivated.
It illuminates in the event of a fault in the
system and is on when the system is notoperating.
This warning light illuminates when the
ignition switch is turned to the “ON ”
position and goes out after the engine
has started. It indicates that the Vehicle
Dynamics Control system is in normaloperation. ! Vehicle Dynamics Control warning light
The Vehicle Dynamics Control system is
probably inoperative under any of the
following conditions. Have your vehicle
checked at a SUBARU dealer immedi-
ately. . The warning light does not illuminate
when the ignition switch is turned to the “ ON ”position. .
The warning light illuminates while the
vehicle is running. . If the electrical circuit of the Vehicle
Dynamics Control system itself becomes
faulty, the warning light only illuminates. At
this time, the ABS (Anti-lock Brake Sys-
tem) remains fully operational. . The warning light illuminates when the
electronic control system of the ABS/
Vehicle Dynamics Control system be-
comes faulty.
The Vehicle Dynamics Control system
provides its ABS control through the
electrical circuit of the ABS system.
Accordingly, if the ABS is inoperative, the
Vehicle Dynamics Control system be-
comes unable to provide ABS control. As
a result, the Vehicle Dynamics Control
system also becomes inoperative, caus-
ing the warning light to illuminate. Though
both the Vehicle Dynamics Control and
ABS systems are inoperative in this case,
the ordinary functions of the brake system
are still available. You will be safe while
driving with this condition, but have your
vehicle checked at a SUBARU dealer as
soon as possible.
NOTE
If the warning light behavior is as
described in the following examples,
the Vehicle Dynamics Control system Instruments and controls
3-37
– CONTINUED –

3-38Instruments and controls
may be considered normal. . The warning light illuminates right
after the engine is started but goes out
immediately, remaining off.. The warning light illuminates after
engine startup and goes off while the
vehicle is subsequently being driven.. The warning light illuminates during
driving, but it goes out immediately and
remains off. ! Vehicle Dynamics Control OFF in-
dicator light
. It illuminates when the Vehicle Dy-
namics Control OFF switch is pressed. . It also illuminates when the Vehicle
Dynamics Control system is deactivated. NOTE . The light may stay on for a while
after the engine has been started,
especially in cold weather. This does
not indicate the existence of a problem.
The light should go out as soon as the
engine has warmed up.. The indicator light illuminates when
the engine has developed a problem
and the CHECK ENGINE warning light/
malfunction indicator lamp is on.
The Vehicle Dynamics Control system is
probably faulty under the following condi-
tion. Have your vehicle checked at a SUBARU dealer as soon as possible. .
The light does not go out even after the
lapse of several minutes (the engine has
warmed up) after the engine has started.
& Security indicator light
This indicator light shows the status of the
alarm system. It also indicates operation
of the immobilizer system. !Alarm system
It blinks to show the driver the operational
status of the alarm system. For detailed
information, refer to the “Alarm system ”
section in chapter 2. ! Immobilizer system
This light blinks approximately 60 seconds
after the ignition switch is turned from“ ON ”position to the “Acc ”or “LOCK ”
position or immediately after the key is
pulled out. Refer to the “Door locks ”
section in chapter 2.
If the indicator light does not flash, it may
indicate that immobilizer system may be
faulty. Contact your nearest SUBARU
dealer immediately.
In the event that an unauthorized key (for
example, an unauthorized duplicate) is
used, the security indicator light illumi-nates. &
SPORT mode indicator
light (4-speed AT mod-els)
This light illuminates when the ignition
switch is turned to the “ON ”position and
goes out after the engine has started.
When the selector lever is moved to the
manual gate, the SPORT mode is se-
lected and the indicator light illuminates.
Refer to the “Automatic transmission –4-
speed ”section in chapter 7.
& Shift-up indicator light
(MT models with SI- DRIVE)
When the ignition switch is turned to the “ON ”position, the indicator light illumi-
nates for 3 seconds, and then turns off.
While selecting the Intelligent (I) mode of
SI-DRIVE, this indicator light illuminates
and informs the upshift timing to the driver
for fuel-efficient driving.

3-40Instruments and controls
& Selector lever and gear posi-
tion indicator (AT models) (if equipped)
This indicator shows the position of the
selector lever.
When the manual mode is selected, the
gear position indicator (which shows the
current gear selection) and the upshift/
downshift indicator light up. Refer to the“Automatic transmission –5-speed ”sec-
tion in chapter 7.
& Turn signal indicator lights
These lights show the operation of the turn
signal or lane change signal.
If the indicator lights do not blink or blink
rapidly, the turn signal bulb may be burned out. Replace the bulb as soon as possible.
Refer to the
“Replacing bulbs ”section in
chapter 11.
& High beam indicator light
This light shows that the headlights are in
the high beam mode.
This indicator light also illuminates when
the headlight flasher is operated. &Cruise control indica-
tor light
The cruise control indicator light illumi-
nates when the ignition switch is turned tothe “ON ”position and goes out after
approximately 3 seconds.
This light illuminates when the “CRUISE ”
main switch is pressed. NOTE . If you move the cruise control lever
or press the main switch button while
turning the ignition switch “ON ”, the
cruise control function is deactivated
and the “CRUISE ”indicator light
flashes. To reactivate the cruise control
function, turn the ignition switch back
to the “Acc ”or “LOCK ”position, and
then turn it again to the “ON ”position.
. If this indicator light and the CHECK ENGINE warning light/malfunction in-
dicator lamp flash simultaneously dur-
ing driving, have the vehicle checked
by your nearest SUBARU dealer. &
Cruise control set in-
dicator light
The cruise control set indicator light
illuminates when the ignition switch is
turned to the “ON ”position and goes out
after approximately 3 seconds.
This light illuminates when vehicle speed
has been set. & Headlight indicator light
This indicator light illuminates when the
light switch is turned to the “”position
(to turn on the parking lights) or to the “
” position (to turn on the headlights).
& Front fog light indicator
light (if equipped)
This indicator light is on while the front fog
lights are on.

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 ..................................... 4-7
Automatic climate control system (if equipped) ..................................................... 4-7
Control panel ...................................................... 4-8
Temperature sensors .......................................... 4-11
Operating tips for heater and air conditioner ....................................................... 4-12
Cleaning ventilator grille ..................................... 4-12 Efficient cooling after parking in direct
sunlight ........................................................... 4-12
Lubrication oil circulation in the refrigerant circuit ............................................................. 4-12
Checking air conditioning system before summer season ............................................................ 4-12
Cooling and dehumidifying in high humidity and low temperature weather condition ................... 4-12
Air conditioner compressor shut-off when engine is heavily loaded .............................................. 4-12
Refrigerant for your climate control system ... ..... 4-12
Air filtration system ........................................... 4-13Climate control
4

4-12Climate control
Operating tips for heater and
air conditioner &Cleaning ventilator grille
Always keep the front ventilator inlet grille
free of snow, leaves, or other obstructions
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
allow 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 conditioner 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
operation each spring. Please have the air
conditioning system checked by your
SUBARU dealer. & Cooling and dehumidifying in
high humidity and low tem-
perature weather condition
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 on a steepupgrade. & Refrigerant for your climate
control system
Your air conditioner uses ozone friendly
refrigerant HFC134a. Therefore, the meth-
od 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.

7-4Starting and operating
vehicle will operate on gasoline meeting
Federal specifications. Gasoline sold out-
side California is permitted to have higher
sulfur levels, which may affect the perfor-
mance of your vehicle ’s catalytic converter
and may produce a sulfur exhaust odor or
smell. SUBARU recommends that you try
a different brand of unleaded gasoline
having lower sulfur to determine if the
problem is fuel related before returning
your vehicle to an authorized dealer for
service. The CHECK ENGINE warning
light/malfunction indicator lamp may also
turn on. If this occurs, return to your
authorized SUBARU dealer for diagnosis.
If it is determined that the condition is
caused by the type of fuel used, repairs
may not be covered by your warranty. ! MMT
Some gasoline contains an octane-en-
hancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl). If
you use such fuels, your emission control
system performance may deteriorate and
the CHECK ENGINE warning light/mal-
function indicator lamp may turn on. If this
happens, return to your authorized
SUBARU Dealer for service. If it is
determined that the condition is caused
by the type of fuel used, repairs may not
be covered by your warranty. !
Gasoline for cleaner air
CAUTION
Do not let fuel spill on the exterior
surfaces of the vehicle. Fuels con-
taining alcohol may cause paint
damage, which is not covered under
the SUBARU Limited Warranty.
Your use of gasoline with detergent
additives will help prevent deposits from
forming in your engine and fuel system.
This helps keep your engine in tune and
your emission control system working
properly, and is a way of doing your part
for cleaner air. If you continuously use a
high quality fuel with the proper detergent
and other additives, you should never
need to add any fuel system cleaning
agents to your fuel tank.
Many gasolines are now blended with
materials called oxygenates. Use of these
fuels can also help keep the air cleaner.
Oxygenated blend fuels, such as MTBE
(Methyl Tertiary Butyl ether) or ethanol
(ethyl or grain alcohol) may be used in
your vehicle, but should contain no more
than 15% MTBE or 10% ethanol for the
proper operation of your SUBARU.
In addition, some gasoline suppliers are now producing reformulated gasolines,
which are designed to reduce vehicle
emissions. SUBARU approves the use of
reformulated gasoline.
If you are not sure what the fuel contains,
you should ask your service station
operators if their gasolines contain deter-
gents and oxygenates and if they have
been reformulated to reduce vehicle emis-sions.
As additional guidance, only use fuels
suited for your vehicle as explained in thefollowing. .
Fuel should be unleaded and have an
octane rating no lower than that specified
in this manual. . Methanol (methyl or wood alcohol) is
sometimes mixed with unleaded gasoline.
Methanol can be used in your vehicle
ONLY if it does not exceed 5% of the fuel
mixture ANDif it is accompanied by
sufficient quantities of the proper cosol-
vents and corrosion inhibitors required to
prevent damage to the fuel system. Do not
use fuel containing methanol EXCEPT
under these conditions. . If undesirable driveability problems are
experienced and you suspect they may be
fuel related, try a different brand of gaso-
line before seeking service at your
SUBARU dealer.

7-6Starting and operating
WARNING
. Gasoline vapor is highly flam-
mable. Before refueling, always
first stop the engine and close all
vehicle doors and windows.
Make sure that there are no
lighted cigarettes, open flames
or electrical sparks in the adja-
cent area. Refueling must be
performed outside. Quickly wipe
up any spilled fuel.
. When opening the cap, grasp it
firmly and turn it slowly to the
left. Do not remove the cap
quickly. Fuel may be under pres-
sure and spray out of the fuel
filler neck, especially in hot
weather. If you hear a hissing
sound while you are removing
the cap, wait for the sound to
stop and then slowly open the
cap to prevent fuel from spraying
out and creating a fire hazard.
. When refueling, insert the fuel
nozzle securely into the fuel filler
pipe. If the nozzle is lifted or not
fully inserted, its automatic stop-
ping mechanism may not func-
tion, causing fuel to overflow the
tank and creating a fire hazard.
. Stop refueling when the auto- matic stop mechanism on the
fuel nozzle activates. If you con-
tinue to add fuel, temperature
changes or other conditions
may cause fuel to overflow from
the tank and create a fire hazard.
4. Stop filling the tank after the fuel filler
pump automatically turns off. Do not add
any more fuel.
CAUTION
Make sure that the cap is tightened
until it clicks to prevent fuel spillage
in the event of an accident.
5. Put the cap back on, turn it clockwise
until you hear a clicking noise. Be certain
not to catch the tether under the cap whiletightening.
6. Close the fuel filler lid completely. If
you spill any fuel on the painted surface,
rinse it off immediately. Otherwise, the
painted surface could be damaged. NOTE
.
You will see the “”sign in the fuel
gauge. This indicates that the fuel filler
door (lid) is located on the right side of
the vehicle.. If the fuel filler cap is not tightened
until it clicks or if the tether is caught
under the cap, the CHECK ENGINE
warning light/malfunction indicator
lamp may illuminate. Refer to the“ Warning and indicator lights ”section
located in chapter 3.
CAUTION
. Never add any cleaning agents to
the fuel tank. The addition of a
cleaning agent may cause da-

7-8Starting and operating
not damage an AWD SUBARU vehicle.
Under no circumstances should the rear
wheels be jacked off the ground, nor
should the driveshaft be disconnected for
state emission testing.
The EPA has issued regulations for
inspecting the On-Board Diagnostic
(OBD) system as part of the state emis-
sions inspection. The OBD system is
designed to detect engine and transmis-
sion problems that might cause vehicle
emissions to exceed 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
consists of a visual operational check of the “CHECK ENGINE ”warning light/mal-
function indicator lamp (MIL) and an
examination of the OBD system with an
electronic scan tool while the engine isrunning. . Avehicle
passes the OBD system
inspection if proper the “CHECK ENGINE ”
warning light/MIL illumination is observed,
there is nostored 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 invehicle
’s computer with the “CHECK
ENGINE ”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 properinflation.
3. Look under the vehicle for any sign of leaks.
4. Check that the hood, trunk (Sedan)
and rear gate (Station wagon) are fullyclosed.
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.