2017 SUBARU LEGACY check engine

Driving tips/Winter driving
–When the vehicle has been left
parked during a snowstorm
Check for snow or ice buildup on the suspension, disc brakes and
brake hoses underneath the ve-
hicle. If there is caked snow or
ice, remove it, being careful not
to damage the disc brakes and
brake hoses and ABS harness.
When parking for long periods in cold
weather, you should observe the following
tips.
1. For MT models, place the shift lever in
the “1”or “R”position. For CVT models,
place the select lever in the “P”position.
2. Use tire stops under the tires to
prevent the vehicle from moving.
! Refueling in cold weather
To help prevent moisture from forming in
the fuel system and the risk of its freezing,
use of an antifreeze additive in the fuel
tank is recommended during cold weather.
Use only additives that are specifically
designed for this purpose. When an
antifreeze additive is used, its effect lasts
longer if the tank is refilled whenever the
fuel level reaches half empty.
If your SUBARU is not going to be used
for an extended period, it is best to have the fuel tank filled to capacity.
&
Driving on snowy and icy
roads
WARNING
Do not use the cruise control on
slippery roads such as snowy or icy
roads. This may cause loss of
vehicle control.
CAUTION
Avoid prolonged continuous driving
in snowstorms. Snow will enter the
engine ’sintakesystemandmay
hinder the airflow, which could re-
sult in engine shutdown or even
breakdown.
To prevent skidding and slipping, avoid
sudden braking, abrupt acceleration, high-
speed driving, and sharp turning when
driving on snowy or icy roads.
Always maintain ample distance between
your vehicle and the vehicle ahead of you
to avoid the need for sudden braking.
To supplement the foot brake, use the
engine brake effectively to control the
vehicle speed. (Shift into a lower gear
when necessary.) Avoid shifting down abruptly. Such beha-
vior can cause the wheels to lock, possibly
leading to loss of vehicle control.
An anti-lock brake system (ABS) en-
hances your vehicle
’s braking perfor-
manceonsnowyandicyroads.For
information about braking on slippery
surfaces, refer to “ABS (Anti-lock Brake
System) ”F 7-33 and “Vehicle Dynamics
Control system ”F 7-35.
! Wiper operation when snowing
Before driving in cold weather, make sure
the wiper blade rubbers are not frozen to
the windshield or rear window.
If the wiper blade rubbers are frozen to the
windshield or rear window, perform the
following procedure.
. To thaw the windshield wiper blade
rubbers, use the defroster with the airflow
selection in “
”and the temperature set
for maximum warmth until the wiper blade
rubbers are completely thawed. Refer to
“Climate control ”F 4-1.
. If your vehicle is equipped with a wiper
deicer, use it. It is helpful to thaw the
windshield wiper blade rubbers. Refer to
“Defogger and deicer ”F 3-61.
. To thaw the rear wiper blade rubbers,
use the rear window defogger. Refer to
“Defogger and deicer ”F 3-61.
8-10

Driving tips/Trailer towing (Legacy)
Trailer towing (Legacy)
Your vehicle is neither designed nor
intended to be used for trailer towing.
Therefore, never tow a trailer with your
vehicle.
SUBARU assumes no responsibility for
injuries or vehicle damage that may result
from trailer towing, from any trailer towing
equipment or from any errors or omissions
in the instructions accompanying such
equipment. SUBARU warranties do not
apply to vehicle damage or malfunction
caused by trailer towing.
Trailer towing (Outback)
Your vehicle is designed and intended to
be used primarily as a passenger-carrying
vehicle. Towing a trailer puts additional
loads on your vehicle’s engine, drivetrain,
brakes, tires and suspension and has an
adverse effect on fuel economy and air
conditioning system cooling performance.
If you do decide to tow a trailer, your safety
and satisfaction depend upon proper use
of correct equipment and cautious opera-
tion of your vehicle. Seek the advice of
your SUBARU dealer to assist you in
purchasing a hitch and other necessary
towing equipment appropriate for your
vehicle. Do not use towing equipment
other than genuine SUBARU towing
equipment. In addition, be sure to follow
the instructions on correct installation and
use provided by SUBARU.
SUBARU assumes no responsibility for
injuries or vehicle damage that result from
trailer towing equipment, or from any
errors or omissions in the instructions
accompanying such equipment or for your
failure to follow the proper instructions.
Regularly check that the hitch mounting
bolts and nuts are tightened securely.
& Warranties and maintenance
SUBARU warranties do not apply to
vehicle damage or malfunction caused
by trailer towing. If you use your vehicle to
tow a trailer, more frequent maintenance
will be required due to the additional load.
(Refer to “Maintenance schedule under
severe driving conditions ”in the “Warranty
and Maintenance Booklet ”.)
Under no circumstances should a trailer
be towed with a new vehicle or a vehicle
with any new powertrain component (en-
gine, transmission, differential, wheel
bearings, etc.) for the first 1,000 miles
(1,600 km) of driving.
& Maximum load limits
WARNING
Never exceed the maximum load
limits explained in the following.
Exceeding the maximum load limits
could cause personal injury and/or
vehicle damage.
CAUTION
. Adequate size trailer brakes are
required when the trailer and its
cargo exceed 1,000 lbs (453 kg)
8-22

Driving tips/Trailer towing (Outback)
country on hot days.
. When towing a trailer, steering,
stability, stopping distance and
braking performance will be dif-
ferent when compared to normal
operation. You should never
drive at excessive speeds but
always employ extra caution
when towing a trailer. You should
also keep the following tips in
mind.
. When parking on a steep slope
with a trailer attached to your
vehicle, the braking power of the
electronic parking brake may not
be sufficient since strong brak-
ing power is needed.
! Before starting out on a trip
. Check the towing regulations for trailer
or caravan vehicles that vary by state/
region. Failure to comply with the proce-
dures set forth will not only compromise
your safety, but will also negate your
insurance coverage and/or may violate
the state road and traffic acts and regula-
tions.
. Check that the vehicle and vehicle-to-
hitch mounting are in good condition. If
any problems are apparent, do not tow the
trailer. .
Check that the vehicle rests horizon-
tally with the trailer attached. If the vehicle
is tipped sharply up at the front and down
at the rear, check the total trailer weight,
GVW, GAWs and tongue load again, then
confirm that the load and its distribution
are acceptable.
. Check that the tire pressures are
correct.
. Check that the vehicle and trailer are
connected properly. Confirm that
–the trailer tongue is connected
properly to the hitch ball.
– the trailer lights connector is con-
nected properly and trailer ’s stop lights
illuminate when the vehicle’ s brake
pedal is pressed, and that the trailer ’s
turn signal lights flash when the
vehicle’ s turn signal lever is operated.
– the safety chains are connected
properly.
– all cargo in the trailer is secured
safely in position.
– the side mirrors provide a good
rearward field of view without a sig-
nificant blind spot.
. Sufficient time should be taken to learn
the “feel ”of the vehicle/trailer combination
before starting out on a trip. In an area free
of traffic, practice turning, stopping and
backing up. !
Driving with a trailer
. You should allow for considerably more
stopping distance when towing a trailer.
Avoid sudden braking because it may
result in skidding or jackknifing and loss of
control.
. Avoid abrupt starts and sudden accel-
erations. For MT models, always start out
in first gear and release the clutch pedal at
moderate engine revolution.
. Avoid uneven steering, sharp turns and
rapid lane changes.
. Slow down before turning. Make a
longer than normal turning radius because
the trailer wheels will be closer than the
vehicle wheels to the inside of the turn. In
a tight turn, the trailer could hit your
vehicle.
. Crosswinds will adversely affect the
handling of your vehicle and trailer, caus-
ing sway. Crosswinds can be due to
weather conditions or the passing of large
trucks or buses. If swaying occurs, firmly
grip the steering wheel and promptly begin
decelerating your vehicle at a gradual
pace.
. When passing other vehicles, consid-
erable distance is required because of the
added weight and length caused by
attaching the trailer to your vehicle.
8-28

Engine overheating
WARNING
Never attempt to remove the radia-
tor cap until the engine has been
shut off and has fully cooled down.
When the engine is hot, the coolant
is under pressure. Removing the
cap while the engine is still hot
could release a spray of boiling hot
coolant, which could burn you very
seriously.
If the engine overheats, pull off the road
safely and stop the vehicle in a safe place.
& If steam is coming from the
engine compartment
Turn off the engine and get everyone
away from the vehicle until it cools down.
&If no steam is coming from
the engine compartment
NOTE
For details about how to check the
coolant level or how to add coolant,
refer to “Engine coolant ”F 11-15.
1. Keep the engine running at idling
speed. 2. Open the hood to ventilate the engine
compartment. Refer to
“Engine hood ”
F 11-7.
Confirm that the cooling fan is turning. If
the fan is not turning, immediately turn off
the engine and contact your authorized
dealer for repair.
3. After the engine coolant temperature
has dropped, turn off the engine.
If the temperature gauge stays in the
overheated zone, turn off the engine.
4. After the engine has fully cooled down,
check the coolant level in the reserve
tank.
If the coolant level is below the “LOW”
mark, add coolant up to the “FULL ”mark.
5. If there is no coolant in the reserve
tank, add coolant to the reserve tank.
Then remove the radiator cap and fill the
radiator with coolant.
If you remove the radiator cap from a hot
radiator, first wrap a thick cloth around the
radiator cap, then turn the cap counter-
clockwise slowly without pressing down
until it stops. Release the pressure from
the radiator. After the pressure has been
fully released, remove the cap by pressing
down and turning it.
Towing
WARNING
Never tow AWD vehicles with the
front wheels raised off the ground
while the rear wheels are on the
ground, or with the rear wheels
raised off the ground while the front
wheels are on the ground. This will
cause the vehicle to spin away due
to the operation or deterioration of
the center differential.
If towing is necessary, SUBARU recom-
mends it be done by your SUBARU dealer
or a commercial towing service.
In case of emergency/Engine overheating
–CONTINUED –9-13

In case of emergency/If your vehicle is involved in an accident
!When the rear gate is stuck at the
fully open position or does not fully
close
If the rear gate cannot be closed due to a
dead battery, etc., while the rear gate is
stopped midway, it can be closed by hand.
1. Gently close the rear gate by hand
until it reaches the half-shut position.
2. Operate the power rear gate to confirm
it is recovered.
& When the rear gate cannot be
opened
Perform the procedure described in “Rear
gate (Outback) –if the rear gate cannot be
opened ”F 9-20.
& When the rear gate cannot be
closed
CAUTION
. On areas which are not flat, such
as hills, do not conduct any of
the following actions. The rear
gate may close suddenly and hit
someone ’s head, face or catch
fingers and body parts in it,
resulting in injury.
. Even while conducting the fol-
lowing actions on a flat surface, be careful not to be injured by
getting caught in or hit by the
rear gate.
. When operating the power rear
gate manually, do not use exces-
sive force. Doing so may cause a
malfunction.
. After closing the rear gate by the
following methods, we recom-
mend that you have the vehicle
checked at a SUBARU dealer.
If the rear gate cannot be closed due to a
dead battery, etc., while the rear gate is
stopped midway, it can be closed by hand.
1. Gently close the rear gate by hand
until it reaches the half-shut position.
2. Operate the power rear gate to confirm
it is recovered.
If your vehicle is involved in
an accident
CAUTION
If your vehicle is involved in an
accident, be sure to inspect the
ground under the vehicle before
restarting the engine. If you find that
fuel has leaked on the ground, do
not try to restart the engine. The fuel
system has been damaged and is in
need of repair. Immediately contact
the nearest automotive service facil-
ity. We recommend that you consult
your SUBARU dealer.
Your vehicle has a fuel pump shut off
system. When the vehicle sustains an
impact in an accident, etc., the fuel pump
shut off system stops supplying the fuel in
order to minimize fuel leakage.
Perform the following procedures to re-
start the engine after the system is
activated.
Models without “keyless access with
push-button start system ”:
1. Turn the ignition switch to the “LOCK”
or “ACC ”position.
2. Restart the engine.
9-22

Maintenance schedule....................................... 11-3
Maintenance precautions ................................... 11-3
Before checking or servicing in the engine
compartment .................................................... 11-4
When checking or servicing in the engine compartment (2.5 L models) ............................. 11-5
When checking or servicing in the engine compartment while the engine is running .......... 11-5
Maintenance tips................................................ 11-5Removing and reinstalling clips .......................... 11-5
Engine hood....................................................... 11-7
Engine compartment overview .......................... 11-9
2.5 L models...................................................... 11-9
3.6 L models .................................................... 11-10
Engine oil.......................................................... 11-11Engine oil consumption .................................... 11-11
Checking the oil level ....................................... 11-11
Changing the oil and oil filter ............................ 11-13
Recommended grade and viscosity .................. 11-13
Synthetic oil ..................................................... 11-13
Cooling system ................................................ 11-14
Cooling fan, hose and connections ................... 11-14
Engine coolant ................................................. 11-15
Air cleaner element .......................................... 11-15Replacing the air cleaner element ..................... 11-16
Spark plugs...................................................... 11-18Recommended spark plugs .............................. 11-18
Drive belts........................................................ 11-18
Manual transmission oil .................................. 11-19
Recommended grade and viscosity .................. 11-19
Continuously variable transmission fluid ...... 11-19
Front differential gear oil (CVT models) and rear differential gear oil ................................ 11-19
Recommended grade and viscosity .................. 11-19
Brake fluid........................................................ 11-20Checking the fluid level .................................... 11-20
Recommended brake fluid ............................... 11-21
Clutch fluid (MT models)................................. 11-21Checking the fluid level.................................... 11-21
Recommended clutch fluid ............................... 11-22
Brake booster.................................................. 11-22
Brake pedal ...................................................... 11-23
Checking the brake pedal free play .................. 11-23
Checking the brake pedal reserve distance ....... 11-23
Clutch pedal (MT models) ............................... 11-23Checking the clutch function ............................ 11-23
Checking the clutch pedal free play .................. 11-24
Replacement of brake pad.............................. 11-24Breaking-in of new brake pads . ........................ 11-24
Tires and wheels.............................................. 11-25Types of tires................................................... 11-25
Tire pressure monitoring system (TPMS) (if equipped) ...................................................... 11-25
Tire inspection ................................................. 11-27
Tire pressures and wear .................................. 11-27
Wheel balance ................................................. 11-29
Wear indicators ............................................... 11-29
Tire rotation direction mark .............................. 11-29
Tire rotation ..................................................... 11-30
Tire replacement .............................................. 11-30
Maintenance and service
11

Maintenance and service/Maintenance precautions
guard against getting oil or fluids
in your eyes. If something does
get in your eyes, thoroughly
wash them out with clean water.
. Do not tamper with the wiring of
the SRS airbag system or seat-
belt pretensioner system, or at-
tempt to take its connectors
apart, as that may activate the
system or it can render it inop-
erative. NEVER use a circuit
tester for these wiring. If your
SRS airbag or seatbelt preten-
sioner needs service, consult
your nearest SUBARU dealer.
NOTE
SUBARU does not endorse the use of
non-SUBARU approved flushing sys-
tems and strongly advises against
performing these services on a
SUBARU vehicle. Non-SUBARU ap-
proved flushing systems use chemi-
cals and/or solvents which have not
been tested or approved by SUBARU.
SUBARU warranties do not cover any
part of the vehicle which is damaged by
adding or applying chemicals and/or
solvents other than those approved or
recommended by SUBARU.
& Before checking or servicing
in the engine compartment
WARNING
. Always stop the engine and apply
the parking brake to prevent the
vehicle from moving.
. Always let the engine cool down.
Engine parts become very hot
when the engine is running and
remain hot for some time after
the engine is stopped.
. Do not spill engine oil, engine
coolant, brake fluid or any other
fluid on hot engine components.
This may cause a fire.
. When the ignition switch is in the
“ ON ”position, the cooling fan
may operate suddenly even
when the engine is stopped. If
your body or clothes come into
contact with a rotating fan, that
could result in serious injury. To
avoid risk of injury, perform the
following precautions.
– Models with push-button start
system:
Always turn the push-button
ignition switch to the “OFF ”
position and confirm that the operation indicator on the
switch is turned off. Then take
the access key out from the
vehicle.
– Models without push-button
start system:
Always remove the key from
the ignition switch.
. Before performing any servicing
on a vehicle equipped with a
remote engine start system tem-
porarily place that system in the
service mode to prevent it from
unexpectedly starting the engine.
11-4

&When checking or servicing
in the engine compartment
(2.5 L models)
CAUTION
. Do not contact the belt cover
while checking the components
in the engine compartment.
Doing so may cause your hand
to slip off the belt cover and
result in an unexpected injury.
. Do not touch the oil filter until the
engine has cooled down comple-
tely. Doing so may result in a
burn or other injury. Note that the
oil filter becomes very hot when
the engine is running and re-
mains hot for some time after the engine has stopped.
&
When checking or servicing
in the engine compartment
while the engine is running
WARNING
A running engine can be dangerous.
Keep your fingers, hands, clothing,
hair and tools away from the cooling
fan, belts and any other moving
engine parts. Removing rings,
watches and ties is advisable.
Maintenance tips
Some clips and fender linings must be
removed before replacing the air cleaner
elements or specific bulbs.
&Removing and reinstalling
clips
! Removing clips
There are several types of clips used for
your vehicle.
!Type A and D clips
Type A clips
Maintenance and service/Maintenance tips
–CONTINUED –
11-5