2010 SUBARU LEGACY check engine light

!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. . 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
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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
lamp may illuminate. Refer to “CHECK
ENGINE warning light/Malfunction in-
dicator lamp ”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
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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 (Legacy)
and rear gate (Outback) 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. Starting and operating
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7-8Starting and operating
NOTE
Engine oil, engine coolant, brake fluid,
washer fluid and other fluid levels
should be checked daily, weekly or at
fuel stops. Starting the engine &
MT models
1. Apply the parking brake.
2. Turn off unnecessary lights and ac- cessories.
3. Depress the clutch pedal to the floor
and shift the shift lever into neutral. Hold
the clutch pedal to the floor while starting
the engine. The starter motor will only
operate when the clutch pedal is de-
pressed fully to the floor.
4. Turn the ignition switch to the “ON ”
position and check the operation of the
warning and indicator lights. Refer to“ Warning and indicator lights ”F 3-9.
CAUTION
Do not operate the starter motor
continuously for more than 10 sec-
onds. If the engine fails to start after
operating the starter for 5 to 10
seconds, wait for 10 seconds or
more before trying again.
5. Turn the ignition switch to the “START ”
position without depressing the accelera-
tor pedal. Release the key immediately
after the engine has started.
If the engine does not start, perform the
following procedure. (1) Turn the ignition switch to the“
LOCK ”position and wait for at least
10 seconds. After checking that the
parking brake is firmly applied, turn the
ignition switch to the “START ”position
while depressing the accelerator pedal
slightly (approximately a quarter of the
full stroke). Release the accelerator
pedal as soon as the engine starts.
(2) If this fails to start the engine, turn
the ignition switch back to the “LOCK ”
position and wait for at least 10
seconds. Then fully depress the accel-
erator pedal and turn the ignition
switch to the “START ”position. If the
engine starts, quickly release the
accelerator pedal.
(3) If this does not start the engine,
turn the ignition switch again to the“ LOCK ”position. After waiting for 10
seconds or longer, turn the ignition
switch to the “START ”position without
depressing the accelerator pedal.
(4) If the engine still refuses to start,
contact your nearest SUBARU dealer
for assistance.

6. Confirm that all warning and indicator
lights have turned off after the engine has
started. The fuel injection system auto-
matically lowers the idle speed as the
engine warms up.
NOTE (2.5 L non-turbo models)
To protect the engine while the shift
lever is in the neutral position, the
engine is controlled so that the engine
speed may not become too high even if
the accelerator pedal is depressedhard. &AT and CVT models
CAUTION
If you restart the engine while the
vehicle is moving, shift the select
lever into the “N ” position. Do not
attempt to place the select lever of a
moving vehicle into the “P ” posi-
tion.
1. Apply the parking brake.
2. Turn off unnecessary lights and ac- cessories.
3. Shift the select lever to the “P ” or “N ”
position (preferably “P ” position). The
starter will only operate when the select
lever is at the “P ”or “N ”position. 4. Turn the ignition switch to the
“ON ”
position and check the operation of the
warning and indicator lights. Refer to“ Warning and indicator lights ”F 3-9.
CAUTION
Do not operate the starter motor
continuously for more than 10 sec-
onds. If the engine fails to start after
operating the starter for 5 to 10
seconds, wait for 10 seconds or
more before trying again.
5. Turn the ignition switch to the “START ”
position without depressing the accelera-
tor pedal. Release the key immediately
after the engine has started.
If the engine does not start, perform the
following procedure.
(1) Turn the ignition switch to the“LOCK ”position and wait for at least
10 seconds. After checking that the
parking brake is firmly applied, turn the
ignition switch to the “START ”position
while depressing the accelerator pedal
slightly (approximately a quarter of the
full stroke). Release the accelerator
pedal as soon as the engine starts.
(2) If this fails to start the engine, turn
the ignition switch back to the “LOCK ”
position and wait for at least 10 seconds. Then fully depress the accel-
erator pedal and turn the ignition
switch to the
“START ”position. If the
engine starts, quickly release the
accelerator pedal.
(3) If this fails to start the engine, turn
the ignition switch again to the “LOCK ”
position. After waiting for 10 seconds
or longer, turn the ignition switch to the“ START ”position without depressing
the accelerator pedal.
(4) If the engine still refuses to start,
contact your nearest SUBARU dealer
for assistance.
6. Confirm that all warning and indicator
lights have turned off after the engine has
started. The fuel injection system auto-
matically lowers the idle speed as the
engine warms up.
While the engine is warming up, make
sure that the select lever is at the “P ” or
“ N ”position and that the parking brake is
applied.
NOTE (2.5 L non-turbo and 3.6 L models)
To protect the engine while the select
lever is in the “P ” or “N ” position, the
engine is controlled so that the engine
speed may not become too high even if
the accelerator pedal is depressed Starting and operating
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&Starting your vehicle
NOTE
All vehicle doors, the engine hood and
trunk / rear gate must be closed prior to
activating the remote engine start sys-
tem. Any open entry point will prevent
starting or cause the system to shutdown.
The remote engine start function is acti-
vated by pressing the “
”button twice
within 3 seconds on your remote engine
start transmitter. Upon successful activa-
tion the remote start confirming transmitter
button will flash once* and the vehicle will
honk the horn and flash the side marker
lights, tail lights and front position lights
once. The system will check certain preconditions before starting, and if all
safety parameters are correct, the engine
will start within 5 seconds. Upon success-
ful engine start, the remote start confirma-
tion transmitter button will flash twice
every 5 seconds* and the vehicle will
honk the horn and flash the side marker
lights, tail lights and the front position
lights once, then the lights will illuminate
and remain illuminated, indicating that the
engine is running. While the vehicle is
operating via the remote engine start
function, the power window features will
be disabled. Also, the system has a timer
and will shut down after 15 minutes if you
do not operate the vehicle. Press and hold the
“
”button for 2 seconds to turn the
engine off. The remote start confirmation
transmitter button will flash three times*
indicating that the engine has shut down.
If the starter cranks but does not start or
starts and stalls, the remote engine start
system will power off and then attempt to
start the engine an additional three times
unless the remote engine start system
determines that a vehicle malfunction is
preventing the system from starting. If the
engine does not start after additional
attempts, the remote engine start system
will abort and return to a non-activatestate.
*: Provided that the remote engine start transmitter is within the operating range of
the system.
& Remote start safety features
For safety and security reasons, the
system will fail to start and honk the horn
twice or shut down the engine during
remote start operation if any of the
following occur: . Any of the doors or the trunk / rear gate
are open / opened (*the vehicle ’s horn will
honk six times and the side marker lights,
tail lights and the front position lights will
flash six times indicating that a vehicle
door or trunk / rear gate was open when
the remote engine start system wasactivated). . The brake pedal is depressed
. The key was already in the ignition
switch. The engine hood is opened
. The remote start system “Service
mode ”is engaged
. The vehicle ’s engine idle speed has
reached a level over 3,500 RPM. The alarm is triggered by opening a
door or the rear gate.. The select lever is not in the “P ”
position (AT and CVT models)
In addition to the items above, if the Starting and operating
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ABS (Anti-lock Brake Sys- tem)
WARNING
Always use the utmost care in driving –overconfidence because
youaredrivingwithanABS
equipped vehicle could easily lead
to a serious accident.
CAUTION
. The ABS system does not always
decrease stopping distance. You
should always maintain a safe
following distance from othervehicles.
. When driving on badly surfaced
roads, gravel roads, icy road, or
over deep newly fallen snow,
stopping distances may be long-
er for a vehicle with the ABS
system than one without. When
driving under these conditions,
therefore, reduce your speed and
leave ample distance from othervehicles.
. When you feel the ABS system
operating, you should maintain constant brake pedal pressure.
Do not pump the brake pedal
since doing so may defeat the
operation of the ABS system.
The ABS system prevents the lock-up of
wheels which may occur during sudden
braking or braking on slippery road sur-
faces. This helps prevent the loss of
steering control and directional stability
caused by wheel lock-up.
When the ABS system is operating, you
may hear a chattering noise or feel a slight
vibration in the brake pedal. This is normal
when the ABS operates.
The ABS system will not operate when the
vehicle speed is below approximately 6
mph (10 km/h).
& ABS system self-check
You may feel a slight shock in the brake
pedal and hear the operating sound of
ABS from the engine compartment just
after the vehicle is started. This is caused
by an automatic functional test of the ABS
system being carried out and does not
indicate any abnormal condition. &
ABS warning light
The ABS warning light illuminates when
the ignition switch is turned to the “ON ”
position and turns off after approximately 2seconds.
This is an indication that the ABS system
is working properly.
CAUTION
If the warning light behaves as
follows, the ABS system may not
be working properly.
When the warning light is on, the
ABS function shuts down; however,
the conventional brake system con-
tinues to operate normally. . The warning light does not illu- Starting and operating
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&Steps to take if EBD system malfunctions
If a malfunction occurs in the EBD system,
the system stops working and the brake
system warning light and ABS warning
light illuminate simultaneously.
The EBD system may be malfunctioning if
the brake system warning light and ABS
warning light illuminate simultaneously
during driving.
Even if the EBD system fails, the conven-
tional braking system will still function.
However, the rear wheels will be more
prone to locking when the brakes are
applied harder than usual and the vehi-cle’s motion may therefore become some-
what harder to control.
If the brake system warning light and ABS warning light illuminate simultaneously,
take the following steps.
1. Stop the vehicle in the nearest safe,
flat place.
2. Shut down the engine, then restart it.
3. Release the parking brake. If both
warning lights turn off, the EBD system
may be malfunctioning.
Drive carefully to the nearest SUBARU
dealer and have the system inspected.
4. If both warning lights illuminate again
and remain illuminated after the engine
has been restarted, shut down the engine
again, apply the parking brake, and check
the brake fluid level.
5. If the brake fluid level is not below the “
MIN ”mark, the EBD system may be
faulty. Drive carefully to the nearest
SUBARU dealer and have the systeminspected.
6. If the brake fluid level is below the “ MIN ”mark, DO NOT drive the vehicle.
Instead, have the vehicle towed to the
nearest SUBARU dealer for repair.
WARNING
. Driving with the brake system
warning light on is dangerous.
This indicates your brake system
may not be working properly. If the light remains on, have the
brakes inspected by a SUBARU
dealer immediately.
. If at all in doubt about whether
the brakes are operating prop-
erly, do not drive the vehicle.
Have your vehicle towed to the
nearest SUBARU dealer for re-
pair. Starting and operating
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