traction control SUBARU LEGACY 2006 4.G Owners Manual

3-22 Instruments and controls
„Door open warning light
When any of the doors or the rear gate
(Station wagon) or trunk lid (Sedan) is not
fully closed, it is indicated by the corre-
sponding part of the door warning light.
Always make sure this light is out before you start to drive. „ All-Wheel Drive warn-
ing light (AT vehicles)
The All-Wheel Drive warning light comes
on when the ignition switch is turned to the
“ON” position and goes out after the en-
gine has started. TFor 5-speed automatic transmission vehicles
This light flashes if the vehicle is driven
with tires of different diameters fitted on its
wheels or with the air pressure excessive-
ly low in any of its tires. T For 4-speed automatic transmission vehicles
This light comes on when All-Wheel Drive
is disengaged and the drive mechanism is
switched to Front Wheel Drive for mainte-
nance or similar purposes.
This light flashes if the vehicle is driven
with tires of different diameters fitted on its
wheels or with the air pressure excessive-
ly low in any of its tires. „ Vehicle Dynamics Con-
trol operation indicator
light (if equipped)
This light comes on when the ignition
switch is ON and goes out approximately
2 seconds later.
It blinks when the skid suppression func-
tion is activated. It illuminates when only
the traction control function is operating. The Vehicle Dynamics Control system is
probably faulty under any of the following
conditions. Have your vehicle checked at
a SUBARU dealer immediately. y
The light does not come on when the ig-
nition switch is turned to the “ON” position. y The light does not go out even after a
period of approximately 2 seconds after
the ignition switch has been turned to the
“ON” position. „ Vehicle Dynamics Con-
trol warning light (if
equipped)/Vehicle Dy-
namics Control OFF indicator
light (if equipped)
This warning light has both the function of
indicating faults in the Vehicle Dynamics
Control system and the function of indicat-
ing that the Vehicle Dynamics Control sys-
tem has been deactivated.
It comes on in the event of a fault in the
system and is on when the system is not
operating.
This warning light comes on when the ig-
nition switch is turned to the “ON” position
and goes out after the engine has started.
It indicates that the Vehicle Dynamics
Control system is in normal operation.
(Turbo model only) Promptly put
fuel in the tank whenever the low
fuel warning light comes on. Engine
misfires as a result of an empty tank
could cause damage to the engine.
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.

7-30 Starting and operating
In the event of wheelspin and/or skidding
on a slippery road surface and/or during
cornering and/or an evasive maneuver,
the Vehicle Dynamics Control system ad-
justs the engine’s output and the wheels’
respective braking forces to help maintain
traction and directional control. yTraction Control Function
The traction control function is designed to
prevent spinning of the driving wheels on
slippery road surfaces, thereby helping to
maintain traction and directional control.
Activation of this function is shown by
steady illumination of the Vehicle Dynam-
ics Control operation indicator light. y Skid Suppression Function
The skid suppression function is designed
to help maintain directional stability by
suppressing the wheels’ tendency to slide
sideways during steering operations. Acti-
vation of this function is shown by flashing
of the Vehicle Dynamics Control operation
indicator light.
NOTE y Slight twitching of the brake pedal may be felt when the Vehicle Dynamics
Control system operates; a small de-
gree of vehicle or st
eering wheel shak-
ing may also be noticed in this situa-
tion. These are normal characteristics
of Vehicle Dynamics Control operation
and are no cause for alarm. y When driving off immediately after
starting the engine, a short-lived oper-
ation noise may be noticed coming
from the engine compartment. This
noise is generated as a result of a
check being performed on the Vehicle
Dynamics Control system and is nor- mal.y Depending on the timing of activa-
tion of the brakes, certain situations
may occur just after driving off where
the brake pedal seems to exhibit a jolt-
ing motion. This too is a consequence
of the Vehicle Dynamics Control opera-
tional check and is normal.y In the circumstances listed in the fol-
lowing, the vehicle may be more unsta-
ble than it feels to the driver. The Vehi-
cle Dynamics Control System may
therefore operate. Such operation does
not indicate a system fault. yon gravel-covered or rutted roads
y on unfinished roads
y when the vehicle is towing a trailer
y when the vehicle is fitted with snow tires or winter tires
y Activation of the Vehicle Dynamics
Control system will cause operation of
the steering wheel to feel slightly dif-
ferent compared to that for normal con-
ditions. y Even if the vehicle is equipped with a
Vehicle Dynamics Control system, it is
important that winter tires be used
when driving on snow-covered or icy
roads. (All four wheels should be fitted
with tires of the same size and brand).
Furthermore, if snow chains are to be
used, they should be fitted on the front
wheels. When a vehicle is fitted with
snow chains, however, the effective-
ness of the Vehicle Dynamics Control
system is reduced and this should be
taken into account when driving the ve-
hicle in such a condition. y It is always important to reduce
speed when approaching a corner,
even if the vehicle is equipped with Ve-
hicle Dynamics Control. y All four wheels shou ld be fitted with
tires of the same size, type, and brand;
furthermore, the amount of wear
should be the same for all four tires. If
these precautions are not observed
and non-matching tires are used, it is
quite possible that the Vehicle Dynam-
ics Control system will be unable to op-
– Keep the tire pressure at the
proper level as shown on the
vehicle placard attached to the
driver’s side door pillar.

Starting and operating 7-31
– CONTINUED –
erate correctly as intended. y
Always turn off the engine before re-
placing a tire as failure to do so may
render the Vehicle Dynamics Control
system unable to operate correctly. „ Vehicle Dynamics Control
system monitor
T Vehicle Dynamics Control operation
indicator light
The indicator light turns on when the igni-
tion switch is turned to the ON position; it
turns off approximately two seconds later.
This indicator light flashes during activa-
tion of the skid suppression function and is
illuminated steadily during activation of
the traction cont rol function. The following two situations could indicate
a malfunction of the Vehicle Dynamics
Control system; if either should occur,
have an authorized SUBARU dealer carry
out an inspection of that
system at the first
available opportunity. y The indicator light does not turn on
when the ignition switch is turned to the
ON position.y The indicator light does not turn off ap-
proximately two seconds after the ignition
switch has been turned to the ON position. T Vehicle Dynamics Control warning
light/Vehicle Dynamics Control OFF
indicator light
This single light has the function of indicat-
ing malfunctions in the Vehicle Dynamics Control system and the function of indicat-ing that the Vehicle Dynamics Control sys-
tem is not operating. It comes on in the
event of a malfunction
in the system and is
illuminated whenever the system is not
operating. V Vehicle Dynamics Control warning
The warning light comes on when the igni-
tion switch is turned to the “ON” position
and goes off several seconds after engine
startup. This lighting pattern indicates that
the Vehicle Dynamics Control system is
operating normally.
The following situations could indicate a
malfunction of the Vehicle Dynamics Con-
trol system; if any should occur, have an
authorized SUBARU dealer carry out an
inspection of the system at the first avail-
able opportunity. y The warning light does not turn on when
the ignition switch is turned to the ON po- sition. y The warning light turns on while the ve-
hicle is being driven. y When a malfunction has occurred in the
Vehicle Dynamics Control electrical sys-
tem, only the warning light will turn on. In
such an event, the ABS will still be operat-
ing normally. y The warning light will also turn on when
a problem occurs with the ABS or Vehicle
Dynamics Control electronic control sys-
700350
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Starting and operating 7-33
– CONTINUED –
The Vehicle Dynamics Control system will
be deactivated and the vehicle will behave
like a model not equipped with the Vehicle
Dynamics Control
system. When the
switch is pressed again to reactivate the
Vehicle Dynamics Control system, the in-
dicator light goes off.
With the Vehicle Dynamics Control sys-
tem deactivated, traction and stability en-
hancement offered by Vehicle Dynamics
Control system is unavailable. Therefore
you should not deactivate the Vehicle Dy-
namics Control syst em except under
above-mentioned situations.
NOTE y 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
switch is turned to the OFF position
and the engine is restarted.y If the switch is held down for 10 sec-
onds or longer, the indicator light goes
off, the Vehicle Dynamics Control sys-
tem is activated, and the system ig-
nores any further pressing of the
switch. To make the switch usable
again, turn the igni tion switch to the
OFF position and restart the engine.y When the switch is pressed to deac- tivate the Vehicle Dynamics Control
system, the vehicle’s running perfor-
mance is comparable with that of a ve-
hicle that does not have a Vehicle Dy-
namics Control system. Do not deacti-
vate the Vehicle Dynamics Control sys-
tem except when absolutely neces-
sary.
Tire pressure monitoring
system (TPMS) (if equipped)
The tire pressure monitoring system pro-
vides the driver with a warning message
by sending a signal from a sensor that is
installed in each wheel when tire pressure
is severely low.
The tire pressure mo
nitoring system will
activate only when the vehicle is driven at
speeds above 20 mph (32 km/h). Also,
this system may not react immediately to
a sudden drop in tire pressure (for exam-
ple, a blow-out caused by running over a
sharp object).
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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

8-10 Driving tips
wiper blades (winter blades) during the
seasons you could have snow and sub-
zero temperatures. Blades of this type
give superior wiping performance in
snowy conditions. Be sure to use blades
that are suitable for your vehicle.
NOTE
When the season requiring non-freez-
ing type wiper blades is over, replace
them with standard wiper blades. „Corrosion protection
Refer to the “Corrosion protection” section
(chapter 10). „
Snow tires
T All models except OUTBACK
Your vehicle is equipped with “all season
tires” which are designed to provide an
adequate measure of traction, handling
and braking performance in year-round
driving. In winter, it may be possible to en-
hance performance through use of tires
designed specifically for winter driving
conditions.
If you choose to insta ll winter tires on your
vehicle, be sure to use the correct tire size
and type. You must install four winter tires
that are of the same size, construction,
brand and load range and you should nev-
er mix radial, belted bias or bias tires since
this may result in dangerous handling
characteristics. When you choose a tire,
make sure that there is enough clearance
between the tire and vehicle body.
Remember to drive with care at all times
regardless of the type of tires on your ve-
hicle.
During high-speed driving, non-
freezing type wiper blades may not
perform as well as standard wiper
blades. If this happens, reduce the
vehicle speed.y
When replacing original tires with
winter (snow) tires, make sure you
use only the same size, construc-
tion and load range as the original
tires listed on the tire placard. Us-
ing other sizes and construction
may affect speedometer/odome-
ter calibration and clearance be-
tween the body and tires. It also
may be dangerous and lead to
loss of vehicle control.
y You must install four winter tires
that are of the same size, circum-
ferences, construction, brand,
and load range. Mixing other siz-
es, circumferences or construc-
tions may result in severe me-
chanical damage to the drive train
of your vehicle and may affect
ride, handling, braking and speed-
ometer/odometer calibration. It
also may be dangerous and lead
to loss of vehicle control.
yDo not use a combination of radi-
al, belted bias or bias tires since it
may cause dangerous handling
characteristics and lead to an ac-
cident.

Driving tips 8-11
– CONTINUED –
T
OUTBACK models only
Your vehicle is equipped with “all season
tires” which are designed to provide an
adequate measure of traction, handling
and braking performance in year-round
driving. In winter, it may be possible to en-
hance performance 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 install four winter tires
that are of the same size, construction,
brand and load range and you should nev-
er mix radial, belted bias or bias tires since
this may result in dangerous handling
characteristics. When you choose a tire,
make sure that there is enough clearance
between the tire and vehicle body.
Remember to drive with care at all times
regardless of the type of tires on your ve-
hicle.
Your OUTBACK comes with 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 in the followingis the winter tire size that we recom-
mend.Recommended winter (snow) tire size
OUTBACK models: P215/55R17,
P225/60R16 or P215/60R16 Studless
„ Tire chains
Driving on snowy grades or icy roads may
yWhen replacing original tires with
winter (snow) tires, make sure you
use only the same size and con-
struction as recommended. Using
other sizes or construction may
affect speedometer/odometer cal-
ibration and clearance between
the body and tires. It also may be
dangerous and lead to loss of ve-
hicle control.
yYou must install four winter tires
that are of the same size, circum-
ferences, construction, brand,
and load range. Mixing other siz-
es, circumferences or construc-
tions may result in severe me-
chanical damage to the drive train
of your vehicle and may affect
ride, handling, braking and speed-
ometer/odometer calibration. It
also may be dangerous and lead
to loss of vehicle control.
yDo not use a combination of radi-
al, belted bias or bias tires since it
may cause dangerous handling
characteristics and lead to an ac-
cident.
Tire chains cannot be used on tires
listed in the following because of
lack of clearance between the tires
and vehicle body. y2.5-liter non-turbo models (except
OUTBACK): P205/50R17 tires
y 2.5-liter turbo models (except
OUTBACK): 215/45ZR17 tires
y OUTBACK models: P225/55R17tires
y 2.5-liter non-turbo and 3.0-liter
models (OUTBACK): P225/60R16
winter (snow) tires
y 2.5-liter non-turbo and 3.0-liter
models (OUTBACK): P215/60R16
winter (snow) tires
y 2.5-liter turbo and 3.0-liter models
(OUTBACK): P215/55R17 winter
(snow) tires

13-12 Consumer information and Reporting safety defects
Uniform tire quality grading
standards
This information indicates the relative
performance of passenger car tires in
the area of treadwear, traction, and
temperature resistance. This is to aid
the consumer in making an informed
choice in the purchase of tires.
Quality grades can be found where
applicable on the tire sidewall be-
tween tread shoulder and maximum
section width. For example:
Treadwear 200 Traction AA Tem- perature A
The quality grades apply to new pneu-
matic tires for use on passenger cars.
However, they do not apply to deep
tread, winter type snow tires, space-
saver or temporary use spare tires,
tires with nominal rim diameters of 12
inches or less, or to some limited pro-
duction tires.
All passenger car tires must confirm
to Federal Safety Requirements in
addition to these grades. „
Treadwear
The treadwear grade is a comparative
rating based on the wear rate of the
tire when tested under controlled con-
ditions on a specified government test course.
For example, a tire graded 150 would
wear one and one-half (1-1/2) times
as well on the government course as
a tire graded 100. The relative perfor-
mance of tires depends upon the ac-
tual conditions of their use, however,
and may depart significantly from the
norm due to variations in driving hab-
its, service practices and differences
in road characteristics and climate. „ Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C. Thosegrades represent th e tire’s ability to
stop on wet pavement as measured
under controlled conditions on speci-
fied government test surfaces of as-
phalt and concrete. A tire marked C
may have poor traction performance.
„ Temperature A, B, C
The temperature grades are A (the
highest), B, and C, representing the
tire’s resistance to the generation of
heat and its ability to dissipate heat
when tested under controlled condi-
tions on a specified indoor laboratory
test wheel. Sustained high tempera-
ture can cause the material of the tire
to degenerate and reduce tire life, and
excessive temperature can lead to
sudden tire failure. The grade C corre-
sponds to a level of performance
which all passenger car tires must
meet under the Federal Motor Vehicle
Safety Standards No. 109. Grades B
and A represent higher levels of per-
formance on the la boratory test wheel
than the minimum required by law.
The traction grade assigned to
this tire is b ased on straight-
ahead braking traction tests,
and does not include accelera-
tion, cornering, hydroplaning, or
peak traction characteristics.