ECO mode SUBARU LEGACY 2005 4.G Service Manual

7-48
Starting and operating
!
Vehicle Dynamics Control OFF switch
Pressing the switch to deactivate the Vehicle Dynam-
ics Control system can facilitate the following opera- tions: " a standing start on a steeply sloping road with a
snowy, gravel-covered, or otherwise slippery surface " extrication of the vehicle when its wheels are stuck
in mud or deep snow
When the switch is pressed during engine operation,
the indicator light illuminates. The Vehicle Dynamics
Control system will be deactivated and the vehicle will
behave like a model not equipped with the Vehicle Dy-
namics Control system. When the switch is pressed
again to reactivate the Vehicle Dynamics Control sys- tem, the indicator light goes off.
With the Vehicle Dynamics Control system deactivat-
ed, traction and stability enhancement offered by Ve-
hicle Dynamics Control system is unavailable. There-
fore you should not deactivate the Vehicle Dynamics
Control system except under above-mentioned situa- tions.
NOTE "
When the switch has been pressed to deactivate
the Vehicle Dynamics Control system, the Vehicle
Dynamics Control system automatically reacti-
vates itself the next time the ignition key is turned
to the OFF position and the engine is restarted. " If the switch is held down for 10 seconds or
longer, the indicator light goes off, the Vehicle Dy-
namics Control system is activated, and the sys-
tem ignores any further pressing of the switch. To
make the switch usable again, turn the ignition key
to the OFF position and restart the engine. " When the switch is pressed to deactivate the Ve-
hicle Dynamics Control system, the vehicle’s run-
ning performance is comparable with that of a ve-
hicle that does not have a Vehicle Dynamics Con-
trol system. Do not deactivate the Vehicle Dynam-
ics Control system except when absolutely neces-
sary.
UB3213CA

8-15
Driving tips
– CONTINUED –
!Snow tires
! All models except OUTBACK
"When replacing original tires with winter
(snow) tires, make sure you use only the same
size, construction and load range as the origi-
nal tires listed on the tire placard. Using other
sizes and construction may affect speedome-
ter/odometer calibration and clearance be-
tween the body and tires. It also may be danger-
ous and lead to loss of vehicle control. " You must install four winter tires that are of
the same size, circumferences, construction,
brand, and load range. Mixing other sizes, cir-
cumferences or constructions may result in se-
vere mechanical damage to the drive train of
your vehicle and may affect ride, handling,
braking and speedometer/odometer calibra-
tion. It also may be dangerous and lead to loss
of vehicle control. " Do not use a combination of radial, belted
bias or bias tires since it may cause dangerous
handling characteristics and lead to an acci-
dent. Your vehicle is equipped with “all season tires” which
are designed to provide an adequate measure of trac-
tion, handling and braking performance in year-round
driving. In winter, it may be possible to enhance per-
formance through use of tires designed specifically for
winter driving conditions.
If you choose to install winter tires on your vehicle, be
sure to use the correct tire size and type. You must in-
stall four winter tires that are of the same size, con-
struction, brand and load range and you should never
mix radial, belted bias or bias tires since this may re-
sult in dangerous handling characteristics. When you
choose a tire, make sure that there is enough clear-
ance between the tire and vehicle body.
Remember to drive with care at all times regardless of
the type of tires on your vehicle. !
OUTBACK models only
"When replacing original tires with winter
(snow) tires, make sure you use only the same
size and construction as recommended. Using
other sizes or construction may affect speed-
ometer/odometer calibration and clearance be-
tween the body and tires. It also may be danger-

8-16
Driving tips
ous and lead to loss of vehicle control. "
You must install four winter tires that are of
the same size, circumferences, construction,
brand, and load range. Mixing other sizes, cir-
cumferences or constructions may result in se-
vere mechanical damage to the drive train of
your vehicle and may affect ride, handling,
braking and speedometer/odometer calibra-
tion. It also may be dangerous and lead to loss
of vehicle control. " Do not use a combination of radial, belted
bias or bias tires since it may cause dangerous
handling characteristics and lead to an acci-
dent.
Your vehicle is equipped with “all season tires” which
are designed to provide an adequate measure of trac-
tion, handling and braking performance in year-round
driving. In winter, it may be possible to enhance per-
formance through use of tires designed specifically for
winter driving conditions.
If you choose to install winter tires on your vehicle, be
sure to use the correct tire size and type. You must in-
stall four winter tires that are of the same size, con-
struction, brand and load range and you should never
mix radial, belted bias or bias tires since this may re-
sult in dangerous handling characteristics. When you choose a tire, make sure that there is enough clear-
ance between the tire and vehicle body.
Remember to drive with care at all times regardless of
the type of tires on your vehicle.
Your OUTBACK comes with P225/60R16 or P225/
55R17 “all season tires” as original equipment.
You should be aware that some winter tires with
that same size designation may actually be too
large for the vehicle and may cause rubbing on
sharp turns. Listed below is the winter tire size
that we recommend.Recommended winter (snow) tire size
2.5-liter non-turbo models: P225/60R16 or P215/
60R16 Studless
All models other than 2.5-liter non-turbo models:
P215/55R17, P225/60R16 or P215/60R16 Studless

8-27
Driving tips
– CONTINUED –
Trailer hitch (if equipped)
"Never exceed the maximum weight specified
for the trailer hitch. Exceeding the maximum
weight could cause an accident resulting in se-
rious personal injuries. Permissible trailer
weight changes depending on the situation. Re-
fer to the next section “Trailer towing” for pos-
sible recommendations and limitations. " Trailer brakes are required when the towing
load exceeds 1,000 lbs (453 kg). Be sure your
trailer has safety chains and that each chain
will hold the trailer’s maximum gross weight.
Towing trailers without safety chains could cre-
ate a traffic safety hazard if the trailer separates
from the hitch due to coupling damage or hitch
ball damage. " Be sure to check the hitch pin and safety pin
for positive locking placement before towing a
trailer. If the ball mount comes off the hitch re-
ceiver, the trailer could get loose and create a
traffic safety hazard." Use only the ball mount supplied with this
hitch. Use the hitch only as a weight carrying
hitch. Do not use with any type of weight dis-
tributing hitch.
The trailer hitch is designed to tow a Class 1 rated
load. The maximum gross trailer weight and maximum
gross tongue weight are indicated in the following ta-
ble.
When you tow a trailer, follow the instructions in the
next section “Trailer towing”. ! Connecting a trailer
1. Remove the receiver cover from the hitch receiver
tube. Then insert the ball mount into the hitch receiver
tube. Maximum gross
trailer weight
Maximum gross
tongue weight
3.0-liter models 3,000 lbs (1,360 kg)
200 lbs (90 kg)
All models
other than
3.0-liter models 2,700 lbs
(1,224 kg)

11 - 1
11
Maintenance and service
Maintenance schedule ................................. 11-3
Maintenance precautions ............................ 11-3 Before checking or servicing in the engine compartment .................................................. 11-4
When you do checking or servicing in the engine compartment while the engine is
running ............................................................ 11-5
Engine hood .................................................. 11-5
Engine compartment overview ................... 11-8 2.5-liter non-turbo models ................................ 11-8
2.5-liter non-turbo California-spec. models .... 11-9
2.5-liter turbo models ....................................... 11-10
3.0-liter models .................................................. 11-11
Engine oil ...................................................... 11-12 Checking the oil level ....................................... 11-12
Changing the oil and oil filter .......................... 11-13
Recommended grade and viscosity ................ 11-16
Recommended grade and viscosity under severe driving conditions .............................. 11-17
Cooling system ............................................. 11-18 Hose and connections ...................................... 11-19
Engine coolant .................................................. 11-19
Air cleaner element ...................................... 11-24 Replacing the air cleaner element ................... 11-24
Spark plugs ................................................... 11-29 Recommended spark plugs ............................. 11-29
Drive belts ..................................................... 11-30 2.5-liter models .................................................. 11-30
3.0-liter models .................................................. 11-30
Manual transmission oil ............................... 11-31 Checking the oil level ....................................... 11-31
Recommended grade and viscosity ............... 11-32
Automatic transmission fluid ...................... 11-33 Checking the fluid level .................................... 11-33
Recommended fluid ......................................... 11-35
Front differential gear oil (AT vehicles) ...... 11-35 Checking the oil level ....................................... 11-35
Recommended grade and viscosity ............... 11-36
Rear differential gear oil ............................... 11-37 Checking the gear oil level .............................. 11-37
Recommended grade and viscosity ............... 11-40
Power steering fluid ...................................... 11-41 Checking the fluid level .................................... 11-41
Recommended fluid ......................................... 11-42
Brake fluid ..................................................... 11-42 Checking the fluid level .................................... 11-42
Recommended brake fluid ............................... 11-43
Clutch fluid (MT vehicles) ............................ 11-43 Checking the fluid level .................................... 11-43
Recommended clutch fluid .............................. 11-44
Brake booster ................................................ 11-44
Brake pedal .................................................... 11-45 Checking the brake pedal free play ................ 11-45
Checking the brake pedal reserve distance ... 11-45
Clutch pedal (Manual transmission vehicles) ..................................................... 11-46Checking the clutch function .......................... 11-46
Checking the clutch pedal free play ............... 11-46
Replacement of brake pad and lining ......... 11-47

11 -1 3
Maintenance and service
– CONTINUED –
3.0-liter models
A) Upper level
B) Lower level
4. Pull out the dipstick again and check the oil level on
it. If it is below the lower level, add oil to bring the level
up to the upper level.
" Use only engine oil with the recommended
grade and viscosity. " Be careful not to spill engine oil when adding
it. If oil touches the exhaust pipe, it may cause
a bad smell, smoke, and/or a fire.
If you check the oil level just after stopping the engine,
wait a few minutes for the oil to drain back into the oil
pan before checking the level.
To prevent overfilling the engine oil, do not add any
additional oil above the upper level when the engine is cold.
In 2.5-liter-engine models, the dipstick has a notch
above the upper level.
Just after driving or while the engine is warm, the en-
gine oil level reading may be in a range between the
upper level and the notch mark. This is caused by ther-
mal expansion of the engine oil. ! Changing the oil and oil filter
Change the oil and oil filter according to the mainte-
nance schedule in the “Warranty and Maintenance
Booklet”.
The engine oil and oil filter must be changed more fre-
quently than listed in the maintenance schedule when
driving on dusty roads, when short trips are frequently
made, or when driving in extremely cold whether.
1. Warm up the engine by letting the engine idle for
about 10 minutes to ease draining the engine oil.
A
B
UBB576BB

11 - 2 4
Maintenance and service
Air cleaner element
Do not operate the engine with the air cleaner
element removed. The air cleaner element not
only filters intake air but also stops flames if the
engine backfires. If the air cleaner element is
not installed when the engine backfires, you
could be burned.
The air cleaner element functions as a filter screen.
When the element is perforated or removed, engine
wear will be excessive and engine life shortened.
The air cleaner element is a dry type. It is unnecessary
to clean or wash the element. ! Replacing the air cleaner element
Replace the air cleaner element according to the
maintenance schedule in the “Warranty and Mainte-
nance Booklet”. Under extremely dusty conditions, re-
place it more frequently. It is recommended that you
always use genuine SUBARU parts. !
Non-turbo models
0
A) Connector
B) Duct
C) Clamp
1. Unplug the connector that is attached to the top of
the air cleaner case.
2. Remove the hose that is located at the bottom of
the side surface of the air cleaner case.
3. Undo the screw and pull the air duct out of the air
cleaner case.
4. Unsnap the two clamps holding the air cleaner
case cover.
A
C
BUBB512CB

11 -2 9
Maintenance and service
– CONTINUED –
Spark plugs
"When disconnecting the spark plug cables,
always grasp the spark plug cap, not the ca-
bles. " Make sure the cables are replaced in the cor-
rect order.
It may be difficult to replace the spark plugs. It is rec-
ommended that you have the spark plugs replaced by
your SUBARU dealer. The spark plugs should be replaced according to the
maintenance schedule in the “Warranty and Mainte-
nance Booklet”. !
Recommended spark plugs
2.5-liter non-turbo models:
FR5AP-11 (NGK)
2.5-liter turbo and 3.0-liter models:
ILFR6B (NGK)
HSB032BA

13-8
Consumer information and Reporting safety defects
hicle control could lead to an accident. !
Measuring and adjusting air pressure to
achieve proper inflation
Check and, if necessary, adjust the pressure of
each tire (including the spare) at least once a
month and before any long journey. Check the
tire pressures when the tires are cold. Use a
pressure gauge to adjust the tire pressures to the
specific values. Driving even a short distance
warms up the tires and increases the tire pres-
sures. Also, the tire pressures are affected by the
outside temperature. It is best to check tire pres-
sure outdoors before driving the vehicle. When a
tire becomes warm, the air inside it expands,
causing the tire pressure to increase. Be careful
not to mistakenly release air from a warm tire to
reduce its pressure. ! Glossary of tire terminology
" Cold tire pressure
The pressure in a tire that has been driven less
than 1 mile or has been standing for three hours
or more. " Maximum inflation pressure The maximum cold inflation pressure to which a
tire may be inflated. "
Recommended inflation pressure
The cold inflation pressure recommended by a
vehicle manufacturer. " Intended outboard sidewall
1)The sidewall that contains a whitewall, bears
white lettering or bears manufacturer, brand,
and/or model name molding that is higher or
deeper than the same molding on the other
sidewall of the tire, or
2)The outward facing sidewall of an asymmet-
rical tire that has a particular side that must al-
ways face outward when mounting on a vehi-
cle.
" Accessory weight
The combined weight (in excess of those stan-
dard items which may be replaced) of floor mats,
leather seats and cross bars to the extent that
these items are available as factory-installed
equipment (whether installed or not). " Curb weight
The weight of a motor vehicle with standard
equipment including the maximum capacity of fu-
el, oil, and coolant and air conditioning.

GAS STATION REFERENCE
Fuel: !2.5-liter non-turbo models
Use only unleaded gasoline with an octane rating of
87 AKI or higher. ! 2.5-liter turbo models and 3.0-liter models
Use premium unleaded gasoline with an octane rat-
ing of 91 AKI or higher. For temporary purposes if
premium unleaded gasoline is not available, you
may use regular unleaded gasoline with an octane
rating of 87 AKI or higher. For optimum engine per-
formance and driveability, it is required (for 2.5-liter
turbo models), and recommended (for 3.0-liter mod-
els) that you use premium grade unleaded gasoline. ! 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). Refer to
“Fuel” section in this manual.
Fuel capacity:
16.9 US gal (64 liters, 14.1 Imp gal) Engine oil:
Use only API classification SL with the words “EN-
ERGY CONSERVING” and the New API certification
mark (starburst mark) displayed on the container. Engine oil capacity:
2.5-liter models: 4.2 US qt (4.0 liters, 3.5 Imp qt)
3.0-liter models: 5.8 US qt (5.5 liters, 4.8 Imp qt)
Cold tire pressure: Tire size P205/55R16 89H 215/45ZR17 P225/60R16 97H P225/55R17 95V
Wheel size 16 x 6.5JJ 17 x 7JJ 16 x 6.5JJ 17 x 7JJ
Pressure Front 32 psi (220 kPa, 2.2 kgf/cm2
) 35 psi
(240 kPa, 2.4 kgf/cm 2
) 32 psi (220 kPa, 2.2 kgf/cm
2
)
Rear 30 psi (210 kPa, 2.1 kgf/cm 2
) 33 psi
(230 kPa, 2.3 kgf/cm 2
) 30 psi (210 kPa, 2.1 kgf/cm
2
)
Rear at trail-
er towing – 32 psi (220 kPa, 2.2 kgf/cm
2
)
Temporary
spare tire Size T135/80D16 T135/70D17 T155/70D17
Pressure
60 psi (420 kPa, 4.2 kgf/cm2
)