2006 SUBARU LEGACY check engine

Driving tips 8-5
Driving tips for AWD vehicles
All-Wheel Drive distributes the engine
power to all four wheels. AWD vehicles provide better traction when driving on
slippery, wet or snow-covered roads and
when moving out of mud, dirt and sand. By
shifting power between the front and rear
wheels, SUBARU AWD can also provide
added traction during acceleration, and
added engine braking force during decel-
eration.
Therefore, your SUBARU AWD vehicle
may handle differently than an ordinary
two wheel drive vehicle and it contains
some features unique to AWD. For safety
purposes as well as to avoid damaging
the AWD system, you should keep the fol-
lowing tips in mind: y
An AWD vehicle is better able to climb
steeper roads under snowy or slippery
conditions than a two wheel drive vehicle.
There is little difference in handling, how-
ever, during extremely sharp turns or sud-
den braking. Therefore, when driving
down a slope or turning corners, be sure
to reduce your speed and maintain an am-
ple distance from other vehicles. y When replacing a ti re, make sure you
use only the same si ze, circumference,
construction, brand, and load range as the
original tires listed on the tire placard. Us-
ing other sizes, circumferences or con-
struction may result in severe mechanical
damage to the drive train of your vehicle
and may affect ride, handling, braking, speedometer/odometer calibration, and
clearance between the body and tires. It
also may be dangerous and lead to loss ofvehicle control. y
If you use a temporary spare tire to re-
place a flat tire, be sure to use the original
temporary spare tire stored in the vehicle.
Using other sizes may result in severe
mechanical damage to the drive train ofyour vehicle. y Always check the cold tire pressure be-
fore starting to drive. The recommended
tire pressure is provided on the tire plac-
ard, which is located under the door latch
on the driver’s side.y Tire chains should always be placed on
the front wheels only.y There are some precautions that you
must observe when towing your vehicle.
For detail information, see “Towing” sec-
tion in chapter 9.
y Always maintain a safe driving
speed according to the road and
weather conditions in order to
avoid having an accident on a
sharp turn, during sudden braking
or under other similar conditions.
yAlways use the utmost care in
driving – overconfidence because
you are driving an All-Wheel Drive
vehicle could easily lead to a seri-
ous accident.
800004

8-6 Driving tips
Off road driving
TAll AWD models except OUTBACK
Your AWD vehicle is neither a convention-
al off-road vehicle nor an all terrain vehi-
cle. It is a passenger car designed prima-
rily for on-road use. The AWD feature
gives it some limited off-road capabilities
in situations in which driving surfaces a
relatively level, obstruction-free and other-
wise similar to on-road driving conditions.
Operating it under other than those condi-
tions could subject the vehicle to exces-
sive stress which might result in damage
not eligible for repair under warranty. If
you do take your SUBARU off road, you
should review the common sense precau- tions in the next section (applicable to the
OUTBACK) for general guidance. But
please keep in mind that your vehicle’s
off-road capabilities are more limited than
those of the OUTBACK.
Never attempt to drive through pools and
puddles, or roads flooded with water. Wa-
ter entering the engine air intake or the ex-
haust pipe or water splashing onto electri-
cal parts may damage your vehicle and
may cause it to stall. T
OUTBACK
Because of the AWD feature and higher
ground clearance, your SUBARU can be
driven on ordinary roads or off-road. But
please keep in mind that an AWD
SUBARU is a passenger car and is nei-
ther a conventional off-road vehicle nor an
all-terrain vehicle. If you do take your
SUBARU off-road, ce rtain common sense
precautions such as the following shouldbe taken: y Make certain that you and all of your
passengers are wearing seatbelts. y Carry some emergency equipment,
such as a towing rope or chain, a shovel,
wheel blocks, first aid kit and cell phone or
citizens band radio. y Drive carefully. Do not take unneces-
sary risks by driving in dangerous areas or
over rough terrain. y
Slow down and employ extra caution at
all times. When driving off-road, you will
not have the benefit of marked traffic
lanes, banked curves, traffic signs and the like. y Do not drive across steep slopes. In-
stead, drive either st raight up or straight
down the slopes. A vehicle can much
more easily tip over sideways than it can
end over end. Avoid driving straight up or
down slopes that are too steep. y Avoid sharp turning maneuvers, espe-
cially at higher speeds. y Do not grip the inside or spokes of the
steering wheel. A bad bump could jerk the
wheel and injure your hands. Instead drive
with your fingers and thumbs on the out-
side of the rim.y If driving through water, such as when
crossing shallow streams, first check the
depth of the water and the bottom of the
stream bed for firmness and ensure that
the bed of the stream is flat. Drive slowly
and completely through the stream. The
water should be shallow enough that it
does not reach the vehicle’s undercar-
riage. Water entering the engine air intake
or the exhaust pipe or water splashing
onto electrical parts may damage your ve-
hicle and may cause it to stall. Never at-
tempt to drive through rushing water; re-
gardless of its depth, it can wash away the
y Always maintain a safe driving
speed according to the road and
weather conditions in order to
avoid having an accident on a
sharp turn, during sudden braking
or under other similar conditions.
yAlways use the utmost care in
driving – overconfidence because
you are driving an All-Wheel Drive
vehicle could easily lead to a seri-
ous accident.

Driving tips 8-7
– CONTINUED –
ground from under your tires, resulting in
possible loss of traction and even vehicle
rollover.y
Always check your brakes for effective-
ness immediately after driving in sand,
mud or water. Do this by driving slowly
and stepping on the brake pedal. Repeat
that process several times to dry out the
brake discs and brake pads.y Do not drive or park over or near flam-
mable materials such as dry grass or fall-
en leaves, as they may burn easily. The
exhaust system is very hot while the en-
gine is running and right after engine
stops. This could create a fire hazard.y After driving through tall grass, mud,
rocks, sand, rivers, etc., check that there
is no grass, bush, paper, rags, stones,
sand, etc. adhering to or trapped on the
underbody. Clear off any such matter from
the underbody. If the vehicle is used with
these materials trapped or adhering to the
underbody, a mechanical breakdown or
fire could occur. y Secure all cargo carried inside the vehi-
cle and make certain that it is not piled higher than the seatbacks. During sudden
stops or jolts, unsecured cargo could be
thrown around in the vehicle and cause in-
jury. Do not pile heavy loads on the roof.
Those loads raise the vehicle’s center of
gravity and make it more prone to tip over. y
If you must rock the vehicle to free it
from sand or mud, depress the accelera-
tor pedal slightly and move the selector le-
ver back and forth between “D” and “R” re-
peatedly. Do not race the engine. For the
best possible traction, avoid spinning the
wheels when trying to free the vehicle. y When the road surface is extremely
slippery, you can obtain better traction by
starting the vehicle with the transmission
in 2nd than 1st (both for MT and AT). y Never equip your vehi cle with tires larg-
er than those specified in this manual. y Wash the vehicle’s underbody after off-
road driving. Suspension components are
particularly prone to dirt buildup, so they
need to be washed thoroughly. y Frequent driving of an AWD vehicle un-
der hard-driving condit ions such as rough
roads or off roads will necessitate more
frequent replacement of engine oil, brake
fluid and transmission oil than that speci-
fied in the maintenance schedule de-
scribed in the “Warranty and Maintenance Booklet”.
Remember that damage done to your
SUBARU while operating it off-road and
not using common sense precautions
such as those listed above is not eligible for warranty coverage.
Winter driving „ Operation during cold weath- er
Carry some emergency equipment, such
as tire chains, a window scraper, a bag of
sand, flares, a small shovel, and jumper cables.
Check the battery and cables. Cold tem-
peratures reduce battery capacity. The
battery must be in good condition to pro-
vide enough power for cold winter starts.
Use an engine oil of proper grade and vis-
cosity for cold weather. Heavy summer oil
will cause harder starting.
Keep the door locks from freezing by
800015

8-8 Driving tips
squirting them with deicer or glycerin.
Forcing a frozen door open may damage
or separate the ru bber weather strips
around the door. If the door is frozen, use
hot water to melt the ice, and afterwards
thoroughly wipe the water away.
Use a windshield washer fluid that con-
tains an antifreeze solution. Do not use
engine antifreeze or other substitutes be-
cause they may damage the paint of the
vehicle.
SUBARU Windshield Washer Fluid con-
tains 58.5% methyl alcohol and 41.5%
surfactant, by volume. Its freezing temper-
ature varies according to how much it is di-
luted, as indicated in the following table.
In order to prevent freezing of washer flu-
id, check the freezing temperatures in the
table above when adjusting the fluid con-
centration to the outside temperature.
If you fill the reservoir tank with a fluid with
a different concentration from the one
used previously, purge the old fluid from the piping between the reservoir tank and
washer nozzles by operating the washer
for a certain period of time. Otherwise, if
the concentration of the fluid remaining in
the piping is too low for the outside tem-
perature, it may freeze and block the noz-zles.
T
Before driving your vehicle
Before entering the vehicle, remove any
snow or ice from your shoes because that
could make the pedals slippery and dan-
gerous.
While warming up the vehicle before driv-
ing, check that the accelerator pedal,
brake pedal, and all other controls operatesmoothly.
Clear away ice and snow that has accu-
mulated under the fenders to avoid mak-
ing steering difficult. During severe winter
driving, stop when and where it is safe to do so and check under the fenders period-
ically. T
Parking in cold weather
Do not use the parking brake when park-
ing for long periods in cold weather since
it could freeze in that position. Instead, ob-
serve the following.
1. Place the shift lever in “1” or “R” for
manual transmission vehicles, and in “P”
for automatic trans mission vehicles.
2. Use tire stops under the tires to prevent
the vehicle from moving.
When the vehicle is parked in snow or
when it snows, raise the wiper blades off
the glass to prevent damage to them.
When the vehicle has been left parked af-
ter use on roads heavily covered with
snow, or has been left parked during a
snowstorm, icing may develop on the brake system, which could cause poor
braking action. Check for snow or ice
Washer Fluid
Concentration Freezing
Temperature
30% 10.4 °F (–12 °C)
50% –4 °F (–20 °C)
100% –49 °F (–45 °C)
Adjust the washer fluid concentra-
tion appropriately for the outside
temperature. If the concentration is
inappropriate, sprayed washer fluid
may freeze on the windshield and
obstruct your view, and the fluid
may freeze in the reservoir tank.
Snow can trap dangerous exhaust
gases under your vehicle. Keep
snow clear of the exhaust pipe and
from around your vehicle if you park
the vehicle in snow with the engine
running.

Driving tips 8-27
– CONTINUED –
T
Before starting out on a trip
y Check that the vehicle and vehicle-to-
hitch mounting are in good condition. If
any problems are apparent, do not tow thetrailer. y Check that the vehicle sits horizontally
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. y Check that the tire pressures are cor-
rect. y Check that the vehicle and trailer are
connected properly. Confirm that
– the trailer tongue is connected prop-
erly to the hitch ball.
– the trailer lights connector is connect-
ed properly and trailer’s brake lights illu-
minate when the vehicle’s brake pedal
is pressed, and that the trailer’s turn sig-
nal lights flash when the vehicle’s turn
signal lever is operated.
– the safety chains are connected prop-
erly.
– all cargo in the trailer is secured safe-
ty in position.
– the side mirrors provide a good rear-
ward field of view without a significant
blind spot.
y 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. T
Driving with a trailer
y You should allow for considerably more
stopping distance when towing a trailer.
Avoid sudden braking because it may re-
sult in skidding or jackknifing and loss of
control. y Avoid abrupt starts and sudden acceler-
ations. If your vehicle has a manual trans-
mission, always start out in first gear and
release the clutch at moderate engine rev-
olution. y Avoid uneven steering, sharp turns and
rapid lane changes.y Slow down before turning. Make a long-
er than normal turning radius because the
trailer wheels will be closer than the vehi-
cle wheels to the inside of the turn. In a
tight turn, the trailer could hit your vehicle. y 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 largetrucks or buses. If swaying occurs, firmly
grip the steering wheel and slow down im-
mediately but gradually.y When passing other vehicles, consider-
able distance is required because of the added weight and length caused by at-
taching the trailer to your vehicle.
1) Left turn
2) Right turn
y Backing up with a trailer is difficult and
takes practice. When backing up with a
trailer, never accelerate or steer rapidly.
When turning back, grip the bottom of the
steering wheel with one hand and turn it to
the left for a left turn, and turn it to the right
for a right turn. y If the ABS warning light illuminates
while the vehicle is in motion, stop towing
the trailer and have repairs performed im-
mediately by the nearest SUBARU dealer. T Driving on grades
y Before going down a steep hill, slow
down and shift into lower gear (if neces-
1 2
800251

9-12 In case of emergency
5. Start the engine of the vehicle with the
booster battery and run it at moderate
speed. Then start the engine of the vehi-
cle that has the discharged battery.
6. When finished, carefully disconnect the
cables in exactly the reverse order.Engine overheating
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
1. Keep the engine running at idling
speed.
2. Open the hood to ventilate the engine compartment.
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 at 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 “MIN”
mark, add coolant up to the “MAX” 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.
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.

9-16 In case of emergency
each of the jack-up reinforcements.
„Using a flat-bed truck
This is the best way to transport your vehi-
cle. Use the following procedures to en-
sure safe transportation.
1. Shift the selector lever into the “P” po-
sition for automatic transmission vehicles
or “1st” for manual transmission vehicles. 2. Pull up the parking brake lever firmly.
3. Secure the vehicle onto the carrier
properly with safety chains. Each safety
chain should be equally tightened and
care must be taken not to pull the chains
so tightly that the suspension bottoms out. „
Towing with all wheels on the ground
1. Check the transmission and differential
oil levels and add oil to bring it to the upper
level if necessary.
2. Release the parking brake and put the
transmission in neutral.
Use the rear tie-down hooks only for
downward anchoring. If they are
used to anchor the vehicle in any
other direction, cables may slip off
the hooks, possibly causing a dan-
gerous situation.
900033
yNever turn the ignition switch to
the “LOCK” position while the ve-
hicle is being towed because the
steering wheel and the direction
of the wheels will be locked.
900254
yRemember that the brake booster
and power steering do not func-
tion when the engine is not run-
ning. Because the engine is
turned off, it will take greater ef-
fort to operate the brake pedal and
steering wheel.
y If transmission failure occurs,
transport your vehicle on a flat-
bed truck.
y Do not run the engine while being
towed using this method. Trans-
mission damage could result if
the vehicle is towed with the en-
gine running.
y For vehicles with automatic trans-
mission, the traveling speed must
be limited to less than 20 mph (30
km/h) and the traveling distance
to less than 31 miles (50 km). For
greater speeds and distances,
transport your vehicle on a flat-
bed truck.

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 ......... 11-4
Engine hood ....................................................... 11-4
Engine compartment overview ......................... 11-6 2.5-liter non-turbo models ..................................... 11-6
2.5-liter turbo models ............................................. 11-7
3.0-liter models ....................................................... 11-8
Engine oil ............................................................ 11-9 Checking the oil level ............................................. 11-9
Changing the oil and oil filter ................................ 11-10
Recommended grade and viscosity ..................... 11-12
Recommended grade and viscosity under severe driving conditions ................................................ 11-13
Cooling system .................................................. 11-13 Hose and connections ........................................... 11-14
Engine coolant ........................................................ 11-14
Air cleaner element ............................................ 11-17 Replacing the air cleaner element ......................... 11-17
Spark plugs ......................................................... 11-19 Recommended spark plugs ................................... 11-19
Drive belts ........................................................... 11-20 2.5-liter models ....................................................... 11-20
3.0-liter models ....................................................... 11-20
Manual transmission oil .................................... 11-20 Checking the oil level ............................................. 11-20
Recommended grade and viscosity ..................... 11-21
Automatic transmission flui d ............................ 11-22
Checking the fluid level .......................................... 11-22
Recommended fluid ............................................... 11-23
Front differential gear oil (AT vehicles) ............ 11-23 Checking the oil level ............................................. 11-23
Recommended grade and viscosity ..................... 11-24
Rear differential gear oil .................................... 11-24 Checking the gear oil level .................................... 11-24
Recommended grade and viscosity ..................... 11-26
Power steering fluid ........................................... 11-27 Checking the fluid level .......................................... 11-27
Recommended fluid ............................................... 11-27
Brake fluid ........................................................... 11-28 Checking the fluid level .......................................... 11-28
Recommended brake fluid ..................................... 11-28
Clutch fluid (MT vehicles) .................................. 11-29 Checking the fluid level .......................................... 11-29
Recommended clutch fluid .................................... 11-29
Brake booster ..................................................... 11-30
Brake pedal ......................................................... 11-30 Checking the brake pedal free play ...................... 11-30
Checking the brake pedal reserve distance ......... 11-30
Clutch pedal (Man ual transmission
vehicles) ........................................................... 11-31 Checking the clutch function ................................ 11-31
Checking the clutch pedal free play ..................... 11-31