2008 SUBARU LEGACY check engine

3-34Instruments and controls
the TPMS is unable to monitor all
four road wheels. Contact your
SUBARU dealer as soon as possible
for tire and sensor replacement and/
or system resetting. If the light
illuminates steadily after blinking
for approximately one minute,
promptly contact a SUBARU dealer
to have the system inspected.
CAUTION
The tire pressure monitoring system
is NOT a substitute for manually
checking tire pressure. The tire
pressure should be checked peri-
odically (at least monthly) using a
tire gauge. After any change to tire
pressure(s), the tire pressure mon-
itoring system will not re-check tire
inflation pressures until the vehicle
is first driven more than 20 mph (32
km/h). After adjusting the tire pres-
sures, increase the vehicle speed to
at least 20 mph (32 km/h) to start the
TPMS re-checking of the tire infla-
tion pressures. If the tire pressures
are now above the severe low
pressure threshold, the low tire
pressure warning light should go
off a few minutes later. Therefore, be
sure to install the specified size for the front and rear tires.
& ABS warning light
The ABS warning light comes on when the
ignition switch is turned to the “ON ”
position and goes out after approximately
2 seconds.
This is an indication that the ABS system
is working properly.
CAUTION
If the warning light behaves as
follows, the ABS system may not
work 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 come
on when the ignition switch is
turned to the “ON ”position.
. The warning light comes on when
the ignition switch is turned tothe “ON ”position, but it does not
go out even when the vehicle
speed exceeds approximately 8
mph (12 km/h).
. The warning light comes on dur-
ing driving. If any of these conditions occur,
have the ABS system repaired at
the first available opportunity by
your SUBARU dealer.
The ABS warning light comes on together
with the brake system warning light if the
EBD system becomes faulty. For further
details of the EBD system fault warning,
refer to “Brake system warning light ”.
NOTE
If the warning light behavior is as
described in the following, the ABS
system may be considered normal. . The warning light comes on right
after the engine is started but goes out
immediately, remaining off.. The warning light remains on after
the engine has been started, but it goes
out when the vehicle speed reaches
approximately 8 mph (12 km/h).. The warning light comes on during
driving, but it goes out immediately and
remains off.
When driving with an insufficient battery
voltage such as when the engine is jump
started, the ABS warning light may come
on. This is due to the low battery voltage
and does not indicate a malfunction.
When the battery becomes fully charged,
the light will go out.

&Brake system
warning light
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.
This light has the following three functions: ! Parking brake warning
The light comes on with the parking brake
applied while the ignition switch is in the“ ON ”position. It goes out when the
parking brake is fully released. ! Brake fluid level warning
This light comes on when the brake fluid
level has dropped to near the “MIN ”level
of the brake fluid reservoir with the ignition
switch in the “ON ”position and with the
parking brake fully released. If the brake system warning light should
come on while driving (with the parking
brake fully released and with the ignition
switch positioned in
“ON ”), it could be an
indication of leaking of brake fluid or worn
brake pads. If this occurs, immediately
stop the vehicle at the nearest safe place
and check the brake fluid level. If the fluid
level is below the “MIN ”mark in the
reservoir, do not drive the vehicle. Have
the vehicle towed to the nearest SUBARU
dealer for repair. ! Electronic Brake Force Distribution
(EBD) system warning
The brake system warning light also
illuminates if a malfunction occurs in the
EBD system. In that event, it comes on
together with the ABS warning light.
The EBD system may be faulty 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 go out, the EBD system
may be faulty.
Drive carefully to the nearest SUBARU
dealer and have the system inspected.
4. If both warning lights come on again
and stay 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.
& Low fuel warning light
The low fuel warning light comes on when
the tank is nearly empty approximately 2.6
US gal (10.0 liters, or 2.2 Imp gal). It only
operates when the ignition switch is in the“ON ”position. Instruments and controls
3-35
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3-36Instruments and controls
NOTE
This light does not go out unless the
tank is replenished up to an internal
fuel quantity of approximately 3.7 US
gal (14 liters, 3.1 Imp gal).
CAUTION
Promptly put fuel in the tank when-
ever the low fuel warning light
comes on. Engine misfires as a
result of an empty tank could cause
damage to the engine.
& Door open warning light
When any of the doors, the rear gate
(Station wagon) or the trunk lid (Sedan) is
not fully closed, the door open warning
light comes on.
For a vehicle without SI-DRIVE, the
open door is indicated by the correspond-
ing part of the door open warning light.
For a vehicle with SI-DRIVE, the opening
door is indicated on the multi-information
display.
Always make sure this light is out before
you start to drive. &
All-Wheel Drive
warning light
(AT models)
WARNING
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.
The All-Wheel Drive warning light comes
on when the ignition switch is turned to the“ ON ”position and goes out after the
engine has started. ! For 5-speed automatic transmis-
sion vehicles
This light flashes if the vehicle is driven
with tires of different diameters fitted on its
wheels or with the air pressure exces-
sively low in any of its tires. ! For 4-speed automatic transmis-
sion vehicles
This light comes on when All-Wheel Drive
is disengaged and the drive mechanism is
switched to Front Wheel Drive for main- tenance 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 exces-
sively low in any of its tires.
& Vehicle Dynamics
Control operation indi-
cator 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. .The light does not come on when the
ignition switch is turned to the “ON ”
position. . 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
Control warning light (if
equipped)/Vehicle Dy-
namics Control OFF in-
dicator 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
system has been deactivated.
It comes on in the event of a fault in the
system and is on when the system is notoperating.
This warning light comes on when the
ignition 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 normaloperation. ! Vehicle Dynamics Control warning light
The Vehicle Dynamics Control system is
probably inoperative under any of the
following conditions. Have your vehicle
checked at a SUBARU dealer immedi-
ately. . The warning light does not come on
when the ignition switch is turned to the “ ON ”position. .
The warning light comes on while the
vehicle is running. . If the electrical circuit of the Vehicle
Dynamics Control system itself becomes
faulty, the warning light only comes on. At
this time, the ABS (Anti-lock Brake Sys-
tem) remains fully operational. . The warning light comes on when the
electronic control system of the ABS/
Vehicle Dynamics Control system be-
comes faulty.
The Vehicle Dynamics Control system
provides its ABS control through the
electrical circuit of the ABS system.
Accordingly, if the ABS is inoperative, the
Vehicle Dynamics Control system be-
comes unable to provide ABS control. As
a result, the Vehicle Dynamics Control
system also becomes inoperative, caus-
ing the warning light to come on. Though
both the Vehicle Dynamics Control and
ABS systems are inoperative in this case,
the ordinary functions of the brake system
are still available. You will be safe while
driving with this condition, but have your
vehicle checked at a SUBARU dealer as
soon as possible. NOTE
If the warning light behavior is as
shown in the following, the Vehicle
Dynamics Control system may be con- sidered normal. .
The warning light comes on right
after the engine is started but goes out
immediately, remaining off.. The warning light comes on after
engine startup and goes off while the
vehicle is subsequently being driven.. The warning light comes on during
driving, but it goes out immediately and
remains off. ! Vehicle Dynamics Control OFF in-
dicator light
. It comes on when the Vehicle Dy-
namics Control OFF switch is pressed. . It also comes on when the Vehicle
Dynamics Control system is deactivated. NOTE . The light may stay on for a while
after the engine has been started,
especially in cold weather. This does
not indicate the existence of a problem.
The light should go out as soon as the
engine has warmed up.. The indicator light comes on when
the engine has developed a problem
and the CHECK ENGINE warning light/
malfunction indicator lamp is on.
The Vehicle Dynamics Control system is
probably faulty under the following condi-
tion. Have your vehicle checked at a Instruments and controls
3-37
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3-40Instruments and controls
rapidly, the turn signal bulb may be burned
out. Replace the bulb as soon as possible.
Refer to the “Replacing bulbs ”section in
chapter 11.
& High beam indicator light
This light shows that the headlights are in
the high beam mode.
This indicator light also comes on when
the headlight flasher is operated. &Cruise control indica-
tor light
The cruise control indicator light comes on
when the ignition switch is turned to the“ON ”position and goes out after approxi-
mately 3 seconds.
This light comes on when the “CRUISE ”
main switch is pressed. NOTE . If you move the cruise control lever
or press the main switch button while
turning the ignition switch “ON ”, the
cruise control function is deactivated
and the “CRUISE ”indicator light
flashes. To reactivate the cruise control
function, turn the ignition switch back
to the “Acc ”or “LOCK ”position, and
then turn it again to the “ON ”position. .
If this indicator light and the CHECK
ENGINE warning light/malfunction in-
dicator lamp flash simultaneously dur-
ing driving, have the vehicle checked
by your nearest SUBARU dealer. & Cruise control set in-
dicator light
The cruise control set indicator light
comes on when the ignition switch is
turned to the “ON ”position and goes out
after approximately 3 seconds.
This light comes on when vehicle speed
has been set.
& Headlight indicator light
This indicator light comes on when the
light switch is turned to the “”position
(to turn on the parking lights) or to the “
” position (to turn on the headlights).
& Front fog light indicator light
This indicator light is on while the front fog
lights are on. Clock (Vehicle without Navi-
gation System) NOTE .
If your vehicle is a 2.5-liter non-turbo
model equipped with a navigation sys-
tem, refer to the separate “Operating
Instructions for Monitor System ”.
. If your vehicle is a turbo model or a
3.0-liter model equipped with a naviga-
tion system, refer to the “Clock (Vehicle
with Navigation System) ”in the multi-
information display (vehicle with SI-
DRIVE) section in this chapter.
The clock shows the time while the
ignition switch is in the “Acc ”or “ON ”
position.

3-42Instruments and controls
Canada-spec. models
The outside temperature indicator shows
the outside temperature in a range from 22 to 122 8F( 30 to 50 8C).
The indicator can give a false reading
under any of the following conditions: . When there is too much sun.
. During idling; while running at low
speeds in a traffic jam; when the engine
is restarted immediately following a shut-down. . When the actual outside temperature
falls outside the specified indicator range. !
Road surface freeze warning indi- cation
U.S.-spec. models
Canada-spec. models
When the outside temperature drops to 37
8F(3 8C) or lower, the temperature
indication flashes to show that the road
surface may be frozen.
If the outside temperature drops to 37 8F
(3 8C) or lower while the display is giving
an indication other than the outside
temperature, the display switches to the
outside temperature indication and flashes
for 5 seconds before returning to its
original indication.
If the display is already indicating an
outside temperature of 37 8F(3 8C) or lower
when the ignition switch is turned to the“ ON ”position, the indication does not
flash.
NOTE
The outside temper ature indication
may differ from the actual outside
temperature. The road surface freeze
warning indication should be treated
only as a guide. Be sure to check the
condition of the road surface beforedriving.

Ventilator.............................................................. 4-2
Air flow selection ................................................ 4-2
Center and side ventilators .................................. 4-3
Manual climate control system (if equipped) ..................................................... 4-3
Control panel ...................................................... 4-3
Heater operation ................................................. 4-5
Air conditioner operation ..................................... 4-7
Automatic climate control system (if equipped) ..................................................... 4-8
Control panel ...................................................... 4-8
Temperature sensors .......................................... 4-11
Operating tips for heater and air conditioner ....................................................... 4-12
Cleaning ventilator grille ..................................... 4-12 Efficient cooling after parking in direct
sunlight ........................................................... 4-12
Lubrication oil circulation in the refrigerant circuit .............................................................. 4-12
Checking air conditioning system before summer season ............................................................ 4-12
Cooling and dehumidifying in high humidity and low temperature weather condition ................... 4-12
Air conditioner compressor shut-off when engine is heavily loaded .............................................. 4-13
Refrigerant for your climate control system ... ..... 4-13
Air filtration system (if equipped) ..................... 4-13
Climate control
4

4-12Climate control
–Interior air temperature sensor: on the
side of the driver-side part of the center panel – Outside temperature sensor: behind
front grille. Operating tips for heater and
air conditioner &
Cleaning ventilator grille
Always keep the front ventilator inlet grille
free of snow, leaves, or other obstructions
to ensure efficient heating and defrosting.
Since the condenser is located in front of
the radiator, this area should be kept clean
because cooling performance is impaired
by any accumulation of insects and leaves
on the condenser. &Efficient cooling after parking
in direct sunlight
After parking in direct sunlight, drive with
the windows open for a few minutes to
allow outside air to circulate into the heated interior. This results in quicker
cooling by the air conditioner. Keep the
windows closed during the operation of
the air conditioner for maximum cooling
efficiency. &
Lubrication oil circulation in
the refrigerant circuit
Operate the air conditioner compressor at
a low engine speed (at idle or low driving
speeds) a few minutes each month during
the off-season to circulate its oil. & Checking air conditioning
system before summer sea-son
Check the air conditioner unit for refriger-
ant leaks, hose conditions, and proper
operation each spring. Have your
SUBARU dealer perform this check. & Cooling and dehumidifying in
high humidity and low tem-
perature weather condition
Under certain weather conditions (high
relative humidity, low temperatures, etc.) a
small amount of water vapor emission
from the air outlets may be noticed. This
condition is normal and does not indicate
any problem with the air conditioningsystem.