2012 SUBARU LEGACY check engine light

3-20Instruments and controls
&All-Wheel Drive
warning light (AT and
CVT models)
WARNING
Continued driving with the AWD
warning light flashing can lead to
powertrain damage. If the AWD
warning light flashes, promptly park
in a safe place then check whether
all four tires are the same diameter
and whether any of the tires has a
puncture or has lost air pressure for
some other reason.
NOTE
If the temporary spare tire is used, the
AWD warning light may flash. Use of
the temporary spare tire should there-
fore be restricted to the minimum time
necessary. Replace the temporary
spare tire with a conventional tire as
soon as possible.
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 warning light/
Vehicle Dynamics Con-
trol operation indicatorlight
!Vehicle Dynamics Control warning light
CAUTION
The Vehicle Dynamics Control sys-
tem provides its ABS control
through the electrical circuit of the
ABS system. Accordingly, if the ABS
is inoperative, the Vehicle Dynamics
Control system becomes unable to
provide ABS control. As a result, the
Vehicle Dynamics Control system
becomes inoperative, causing the
warning light to illuminate. Although
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 in this
condition, but drive carefully and
have your vehicle checked at a
SUBARU dealer as soon as possi-ble. NOTE .
If the electrical circuit of the Vehicle
Dynamics Control system itself mal-
functions, the warning light only illumi-
nates. At this time, the ABS (Anti-lock
Brake System) remains fully opera-tional.. The warning light illuminates when
the electronic control system of the
ABS/Vehicle Dynamics Control systemmalfunctions.
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. NOTE
If the warning light behavior is as
described in the following examples,
the Vehicle Dynamics Control system
may be considered normal. . The warning light illuminates right
after the engine is started but turns off
immediately and remains off.. The warning light illuminates after
the engine has started and turns off

while the vehicle is subsequently being driven..The warning light illuminates during
driving, but turns off immediately and
remains off. ! Vehicle Dynamics Control opera-
tion indicator light
The indicator light flashes during activa-
tion of the skid suppression function and
during activation of the traction controlfunction. NOTE . The light may remain illuminated for
a short period of time after the engine
has been started, especially in cold
weather. This does not indicate the
existence of a problem. The light
should turn off 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 light is on.
The Vehicle Dynamics Control system is
probably malfunctioning under the follow-
ing condition. Have your vehicle checked
at a SUBARU dealer as soon as possible. . The light does not turn off even after
the lapse of several minutes (the engine
has warmed up) after the engine has started.
& Vehicle Dynamics
Control OFF indicatorlight
The light illuminates when the Vehicle
Dynamics Control OFF switch is pressed
to deactivate the Vehicle Dynamics Con-
trol system.
The Vehicle Dynamics Control system is
probably malfunctioning under any of the
following conditions. Have your vehicle
checked at a SUBARU dealer immedi-
ately. .The light does not illuminate when the
ignition switch is turned to the “ON ”
position.. The light does not turn off even after a
period of approximately 2 seconds after
the ignition switch has been turned to the“ ON ”position.
& 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 “Alarm system ”F 2- 15. !
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 “Immobilizer ”F 2-3.
If the indicator light does not flash, it may
indicate that immobilizer system may be
malfunctioning. 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. NOTE
Even if the security indicator light
flashes irregularly or its fuse blows
(the light does not flash if its fuse is
blown), the immobilizer system will
function normally. Instruments and controls
3-21
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&Cruise control indica-
tor light
This light illuminates when the “CRUISE ”
main switch is pressed to activate the
cruise control function. NOTE . If you press the main switch button
while turning the ignition switch “ON ”,
the cruise control function is deacti-
vated 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 light flash simultaneously dur-
ing driving, have the vehicle checked
by your nearest SUBARU dealer.
& Cruise control set in-
dicator light
This light illuminates when vehicle speed
has been set to use the cruise controlfunction. &
Headlight indicator light
This indicator light illuminates under the
following conditions. .when the light switch is turned to the
“
” or “”position
. when the light switch is in the “AUTO ”
position and the headlights illuminate automatically & Front fog light indicator
light (if equipped)
This indicator light illuminates while the
front fog lights are illuminated. Clock NOTE
Your SUBARU dealer can change the
settings of activating/deactivating the
automatic adjustment of the clock by
the GPS (Global Positioning System)
(for models with the genuine SUBARU
navigation system). Contact your
SUBARU dealer for details.
The clock shows the time while the
ignition switch is in the
“Acc ”or “ON ”
position.
To adjust the time shown by the clock,
press the “+ ” button or the “ ” button. If
you press the “+ ” button, the indicated
time will change in one-minute incre-
ments. If you press the “ ” button, the
Instruments and controls
3-23
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Ventilator control................................................. 4-2
Center ventilators ................................................ 4-2
Side ventilators ................................................... 4-2
Climate control panel .......................................... 4-3
Type A ................................................................ 4-3
Type B ................................................................ 4-4
Automatic climate control system (type B) ....... 4-5
Temperature sensors ........................................... 4-5
Manual climate control ....................................... 4-6
Airflow mode selection ........................................ 4-6
Temperature control ............................................ 4-7
Fan speed control ............................................... 4-7
Air conditioner control ........................................ 4-7
Air inlet selection ................................................ 4-7
Defrosting ............................................................ 4-8 Operating tips for heater and air
conditioner ........................................................ 4-8
Cleaning ventilator grille ...................................... 4-8
Efficient cooling after parking in direct sunlight ............................................................. 4-8
Lubrication oil circulation in the refrigerant circuit ................................................................ 4-9
Checking air conditioning system before summer season .............................................................. 4-9
Cooling and dehumidifying in high humidity and low temperature weather condition ..................... 4-9
Air conditioner compressor shut-off when engine is heavily loaded ................................................ 4-9
Refrigerant for your climate control system ... ....... 4-9
Air filtration system ............................................. 4-9
Replacing an air filter ......................................... 4-10Climate control
4

Fuel...................................................................... 7-2
Fuel requirements ............................................... 7-2
Fuel filler lid and cap ........................................... 7-3
State emission testing (U.S. only) ...................... 7-6
Preparing to drive ............................................... 7-7
Starting the engine .............................................. 7-8
MT models .......................................................... 7-8
AT and CVT models ............................................. 7-9
Stopping the engine ........................................... 7-10
Remote engine start system (dealer option) .............................................................. 7-10
Starting your vehicle .......................................... 7-10
Remote start safety features ............................... 7-11
Entering the vehicle while it is running via remote start ................................................................. 7-11
Remote start confirmation transmitter feature ............................................................. 7-12
Entering the vehicle following remote engine start shutdown ......................................................... 7-13
Pre-heating or pre-cooling the interior of the vehicle ............................................................. 7-13
Service mode ..................................................... 7-13
Remote transmitter program ............................... 7-13
System maintenance .......................................... 7-14
Manual transmission .......................................... 7-15
Selecting reverse gear ........................................ 7-16
Shifting speeds .................................................. 7-16
Driving tips ........................................................ 7-17
Automatic transmission/Continuously variable transmission ..................................... 7-17
Select lever ........................................................ 7-18 Shift lock function
............................................. 7-20
Selection of manual mode .................................. 7-21
Driving tips ........................................................ 7-22
Power steering ................................................... 7-23
Braking ............................................................... 7-23
Braking tips ....................................................... 7-23
Brake system .................................................... 7-23
Disc brake pad wear warning indicators ............. 7-24
ABS (Anti-lock Brake System) .......................... 7-24
ABS system self-check ...................................... 7-25
ABS warning light .............................................. 7-25
Electronic Brake Force Distribution (EBD) system ............................................................. 7-25
Steps to take if EBD system malfunctions ..... ..... 7-25
Vehicle Dynamics Control system .................... 7-26
Vehicle Dynamics Control system monitor..... ..... 7-28
Vehicle Dynamics Control OFF switch ................ 7-28
Tire pressure monitoring system (TPMS) (if equipped) .................................................... 7-29
Parking your vehicle ......................................... 7-30
Electronic parking brake .................................... 7-31
Parking tips ....................................................... 7-34
Cruise control .................................................... 7-35
To set cruise control .......................................... 7-35
To temporarily cancel the cruise control ............. 7-36
To turn off the cruise control .............................. 7-36
To change the cruising speed .. .......................... 7-37
Cruise control indicator light .............................. 7-38
Cruise control set indicator light ........................ 7-38
Starting and operating
7

7-2Starting and operating
Fuel
CAUTION
Use of a fuel which is low in quality
or use of an inappropriate fuel
additive may cause engine damage.
& Fuel requirements
! Non-turbo models
The non-turbo engine is designed to
operate using unleadedgasoline with an
octane rating of 87 AKI (90 RON) or
higher .
! Turbo models
The engine is designed to operate at
maximum performance using premium
unleaded gasoline with an octane rating
of 93 AKI (98 RON) or higher . If 93 AKI
(98 RON) fuel is not readily available in
your area, unleaded gasoline with an
octane rating of 91 AKI (95 RON) may
be used with no detriment to engine
durability or driveability. However, you
may notice a slight decrease in maximum
engine performance while using 91 AKI
(95 RON) fuel. Use of 91 AKI (95 RON)
fuel will not affect your warranty coverage.
If premium unleaded gasoline is not available, regular unleaded gasoline with
an octane rating of 87 AKI (90 RON) or
higher may be temporarily used. For
optimum engine performance and drive-
ability, it is required that you use premium
grade unleaded gasoline.
NOTE
Be sure to use premium unleaded
gasoline of 91 AKI (95 RON) or higher
for a turbo engine model. If other
gasoline (lower than 91 AKI (95 RON))
is used, knocking, reduced output and
poor accelerator response will result. ! Fuel octane rating
This octane rating is the average of the
Research Octane and Motor Octane
numbers and is commonly referred to as
the Anti Knock Index (AKI).
Using a gasoline with a lower octane
rating can cause persistent and heavy
knocking, which can damage the engine.
Do not be concerned if your vehicle
sometimes knocks lightly when you drive
up a hill or when you accelerate. See your
dealer or a qualified service technician if
you use a fuel with the specified octane
rating and your vehicle knocks heavily or
persistently. !
Unleaded gasoline
The neck of the fuel filler pipe is designed
to accept only an unleaded gasoline filler
nozzle. Under no circumstances should
leaded gasoline be used because it will
damage the emission control system and
may impair driveability and fuel economy. ! California fuel
If your vehicle was certified to California
Emission Standards as indicated on the
underhood tune-up label, it is designed to
optimize engine and emission control
system performance with gasoline that
meets the clean burning low-sulfur Cali-
fornia gasoline specifications. If you live in
any other state than California, your
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 light 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 light 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. . Fuel system damage or driveability
problems which result from the use of
improper fuel are not covered under the
SUBARU Limited Warranty.
& Fuel filler lid and cap
! Refueling
Only one person should be involved in
refueling. Do not allow others to approach
the area of the vehicle near the fuel filler
pipe while refueling is in progress.
Be sure to observe any other precautions
that are posted at the service station. Starting and operating
7-3
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4. Hook the cord that is attached to the
fuel filler cap onto the hook inside the fuel
filler lid.
WARNING
. 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.
5. 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.
6. 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.
7. 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
light may illuminate. Refer to “CHECK
ENGINE warning light/Malfunction in-
dicator light ”F 3-12.
CAUTION
. Never add any cleaning agents to
the fuel tank. The addition of a
cleaning agent may cause da- Starting and operating
7-5
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