check engine SUBARU IMPREZA WRX 2007 3.G Owners Manual

6
&Engine exhaust gas (Carbon monoxide)
WARNING
. Never inhale engine exhaust gas.
Engine exhaust gas contains
carbon monoxide, a colorless
and odorless gas which is dan-
gerous, or even lethal, if inhaled.
. Always properly maintain the en-
gine exhaust system to prevent
engine exhaust gas from enter-
ing the vehicle.
. Never run the engine in a closed
space, such as a garage, except
for the brief time needed to drive
the vehicle in or out of it.
. Avoid remaining in a parked
vehicle for a lengthy time while
the engine is running. If that is
unavoidable, then use the venti-
lation fan to force fresh air into
the vehicle.
. Always keep the front ventilator
inlet grille free from snow, leaves
or other obstructions to ensure
that the ventilation system al-
ways works properly.
. If at any time you suspect that
exhaust fumes are entering the vehicle, have the problem
checked and corrected as soon
as possible. If you must drive
under these conditions, drive
only with all windows fully open.
. Keep the trunk lid or rear gate
closed while driving to prevent
exhaust gas from entering thevehicle.
& Drinking and driving
WARNING
Drinking and then driving is very
dangerous. Alcohol in the blood-
stream delays your reaction and
impairs your perception, judgment
and attentiveness. If you drive afterdrinking –even if you drink just a
little –it will increase the risk of
being involved in a serious or fatal
accident, injuring or killing yourself,
your passengers and others. In
addition, if you are injured in the
accident, alcohol may increase the
severity of that injury.
Please don ’t drink and drive.
Drunken driving is one of the most
frequent causes of accidents. Since alco- hol affects all people differently, you may
have consumed too much alcohol to drive
safely even if the level of alcohol in your
blood is below the legal limit. The safest
thing you can do is never drink and drive.
However if you have no choice but to
drive, stop drinking and sober up comple-
tely before getting behind the wheel. &
Drugs and driving
WARNING
There are some drugs (over the
counter and prescription) that can
delay your reaction time and impair
your perception, judgment and at-
tentiveness. If you drive after taking
them, it may increase your, yourpassengers ’and other persons ’risk
of being involved in a serious or
fatal accident.
If you are taking any drugs, check with
your doctor or pharmacist or read the
literature that accompanies the medication
to determine if the drug you are taking can
impair your driving ability. Do not drive
after taking any medications that can
make you drowsy or otherwise affect your
ability to safely operate a motor vehicle. If
you have a medical condition that requires
you to take drugs, please consult with

22
&WARNING AND INDICATOR LIGHT
Mark Name Page
Seatbelt warning light 3-14
SRS airbag system
warning light 3-14
orPassenger airbag ON
indicator light3-15
orPassenger airbag OFF
indicator light3-15
CHECK ENGINE
warning light/Malfunction
indicator lamp3-16
Charge warning light 3-16
Oil pressure warning light
3-16
AT OIL temperature
warning light (if equipped)3-17Mark Name Page
orABS warning light 3-17
orBrake system warning light
3-18
Door open warning light 3-19
All-Wheel Drive warning
light (if equipped)3-19
Turn signal indicator lights3-20
High beam indicator light 3-20
Security indicator light
2-4,
2-13
Intercooler water spray
warning light (if
equipped) 3-19
Lights indicator light (if
equipped)
3-21
Cruise control indicator light3-20Mark Name Page
Cruise control set indi-
cator light
3-20
REV indicator light (if
equipped)3-21
Rear differential oil tem-
perature warning light (if
equipped)3-17
Driver
’s control center
differential auto indicator
light (if equipped) 3-20
Driver
’s control center
differential indicator light
(if equipped) 3-21
Driver
’s control center
differential indicator and
warning lights (if
equipped) 3-21

Ignition switch..................................................... 3-3
LOCK .................................................................. 3-3
Acc..................................................................... 3-4
ON...................................................................... 3-4
START ................................................................ 3-4
Key reminder chime ............................................ 3-5
Ignition switch light ............................................. 3-5
Key interlock release (AT vehicles only) ... ............ 3-5
Hazard warning flasher ....................................... 3-6
Meters and gauges (WRX-STI) ........................... 3-6
Combination meter illumination ........................... 3-6
Canceling sequential illumination of the combination meter ............................................ 3-6
Speedometer ....................................................... 3-7
Odometer/Trip meter ............................................ 3-7
Tachometer ......................................................... 3-7
Fuel gauge .......................................................... 3-8
Temperature gauge ............................................. 3-8
Outside temperature indicator ............................. 3-9
REV indicator light and buzzer (WRX-STI) ........ 3-9
Setting the alarm-level engine speed ................... 3-10
Deactivating the REV alarm system ..................... 3-11
Meters and gauges (Except WRX-STI) .............. 3-11
Speedometer ...................................................... 3-11
Odometer/Trip meter ........................................... 3-11
Tachometer ........................................................ 3-12
Fuel gauge ......................................................... 3-12
Temperature gauge ............................................ 3-13
Outside temperature indicator ............................ 3-13
Warning and indicator lights ............................. 3-14
Seatbelt warning light and chime ........................ 3-14SRS airbag system warning light
........................ 3-14
Front passenger ’s frontal airbag ON and OFF
indicators ........................................................ 3-15
CHECK ENGINE warning light/Malfunction indicator lamp ................................................. 3-16
Charge warning light .......................................... 3-16
Oil pressure warning light .................................. 3-16
AT OIL TEMPerature warning light (AT vehicles) .................................................... 3-17
Rear differential oil temperature warning light (WRX-STI) ........................................................ 3-17
ABS warning light .............................................. 3-17
Brake system warning light ................................ 3-18
Door open warning light .................................... 3-19
All-Wheel Drive warning light (AWD AT vehicles –
if equipped) ..................................................... 3-19
Intercooler water spray warning light (WRX-STI) ........................................................ 3-19
Selector lever position indicator (AT vehicles) .................................................... 3-20
Turn signal indicator lights ................................. 3-20
High beam indicator light ................................... 3-20
Cruise control indicator light .............................. 3-20
Cruise control set indicator light ........................ 3-20
Driver ’s control center differential auto indicator
light (WRX-STI) ................................................ 3-20
Driver ’s control center differential indicator and
warning lights (WRX-STI) ................................. 3-21
Lights indicator light (WRX-STI) ......................... 3-21
REV indicator light (WRX-STI) .. .......................... 3-21
Clock .................................................................. 3-22Instruments and controls
3

3-14Instruments and controls
Warning and indicator lights
Several of the warning and indicator lights
come on momentarily and then go out
when the ignition switch is initially turned
to the“ON ”position. This permits check-
ing the operation of the bulbs.
Apply the parking brake and turn the
ignition switch to the “ON ”position. The
following lights come on: . Seatbelt warning light
. SRS airbag system warning light
. Front passenger ’s frontal airbag ON
indicator light. Front passenger ’s frontal airbag OFF
indicator light. CHECK ENGINE warning light/Mal-
function indicator lamp. Charge warning light
. Oil pressure warning light
. AT OIL temperature warning light (AT
vehicles). ABS warning light
. Brake system warning light
. All-Wheel Drive warning light (AWD AT
vehicles). Cruise control indicator light
. Cruise control set indicator light
If any lights fail to come on, it indicates a
burned-out bulb or a malfunction of the corresponding system.
Consult your authorized SUBARU dealer
for repair. &
Seatbelt warning light
and chime
Your vehicle is equipped with a seatbelt
warning device at the driver ’s seat, as
required by current safety standards.
There is a seatbelt warning light in the
combination meter.
If the driver has not yet fastened the
seatbelt when the ignition switch is turned
to the “ON ”position, the seatbelt warning
light will flash for 6 seconds, to warn that
the seatbelt is unfastened. If the driver ’s
seatbelt is not fastened, a chime will also
sound simultaneously.
If the driver ’s seatbelt is still not fastened 6
seconds later, the warning light will remain
lit for 15 seconds. If the driver ’s seatbelt is
still not fastened even 15 seconds later
(21 seconds after turning ON the ignition
switch), the warning lights will alternate
between flashing and steady illumination
at 15-second intervals, and the chime will
sound while the warning light is flashing.
Alternate flashing and steady illumination
of the warning lights and sounding of the
chime will continue until the driver fastens
the seatbelt. NOTE .
If the driver unfastens the seatbelt
after fastening, the seatbelt warning
device operates as follows according
to the vehicle speed.
.At speeds lower than approxi-
mately 9 mph (15 km/h)
The warning light will alternate
between flashing and steady illumi-
nation at 15-second intervals. The
chime will not sound. . At speeds higher than approxi-
mately 9 mph (15 km/h)
The warning light will alternate
between flashing and steady illumi-
nation at 15-second intervals and
the chime will sound while the
warning light is flashing.
. It is possible to cancel the warning
operation that follows the 6-second
warning after turning ON the ignition
switch. When the ignition switch is
turned ON next time, however, the
complete sequence of the warning
operation resumes. For further details
about canceling the warning operation,
please contact your SUBARU dealer. & SRS airbag system
warning light
When the ignition switch is turned to the

3-16Instruments and controls
&CHECK ENGINE warn-
ing light/Malfunction in-
dicator lamp
CAUTION
If the CHECK ENGINE light comes
on while you are driving, have your
vehicle checked/repaired by your
SUBARU dealer as soon as possi-
ble. Continued vehicle operation
without having the emission control
system checked and repaired as
necessary could cause serious da-
mage, which may not be covered by
your vehicle ’s warranty.
If this light comes on steadily or blinks
while the engine is running, it may indicate
that there is a problem or potential
problem somewhere in the emission con-
trol system. ! If the light comes on steadily:
If the light comes on steadily while driving
or does not go out after the engine starts,
an emission control system malfunction
has been detected.
You should have your vehicle checked by
an authorized SUBARU dealer immedi-
ately. NOTE
This light also comes on when the fuel
filler cap is not tightened until it clicks.
If you have recently refueled your vehicle,
the cause of the CHECK ENGINE warning
light/malfunction indicator lamp coming on
could be a loose or missing fuel filler cap.
Remove the cap and retighten it until it
clicks. Make sure nothing is interfering
with the sealing of the cap. Tightening the
cap will not make the CHECK ENGINE
warning light turn off immediately. It may
take several driving trips. If the light does
not go out, take your vehicle to your
authorized SUBARU dealer immediately. !
If the light is blinking:
If the light is blinking while driving, an
engine misfire condition has been de-
tected which may damage the emission
control system.
To prevent serious damage to the emis-
sion control system, you should do thefollowing. . Reduce vehicle speed.
. Avoid hard acceleration.
. Avoid steep uphill grades.
. Reduce the amount of cargo, if possi-
ble.. Stop towing a trailer as soon as
possible. The CHECK ENGINE warning light may
stop blinking and come on steadily after
several driving trips. You should have your
vehicle checked by an authorized
SUBARU dealer immediately. &
Charge warning light
If this light comes on when the engine is
running, it may indicate that the charging
system is not working properly.
If the light comes on while driving or does
not go out after the engine starts, stop the
engine at the first safe opportunity and
check the alternator belt. If the belt is
loose, broken or if the belt is in good
condition but the light remains on, contact
your nearest SUBARU dealer immedi-
ately. &Oil pressure warning light
If this light comes on when the engine is
running, it may indicate that the engine oil
pressure is low and the lubricating system
is not working properly.
If the light comes on while driving or does
not go out after the engine starts, stop the
engine at the first safe opportunity and
check the engine oil level. If the oil level is
low, add oil immediately. If the engine oil is
at the proper level but the light remains on,

3-18Instruments and controls
.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.
With a vehicle equipped with an EBD
system, 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, we recom-
mend that you 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 malfunctioning 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, apply the
parking brake and 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.
& Door open warning light
The door open warning light comes on if
any door or the rear gate is not fullyclosed.
Always make sure this light is out before
you start to drive. &All-Wheel Drive warn-
ing light (AWD AT vehicles –if equipped)
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.
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 (Non-turbo vehicles). It flashes if the vehicle is driven with tires
of differing diameters fitted on the wheels
or with an excessively low air pressure in
any of the tires.
CAUTION
Continuing to drive with the AWD
warning light flashing can damage
the powertrain. If the AWD warning
light starts to flash, promptly park in
a safe place and check whether the
tires have differing diameters and
whether any of the tires has an
excessively low inflation pressure.
& Intercooler water spray
warning light (WRX-STI)
This light comes on when the water level
in the intercooler water spray tank falls to
the lower limit (approximately 0.4 US qt,
0.4 liter, 0.4 Imp qt). Instruments and controls
3-19
– CONTINUED –

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 (if equipped) ...................................................... 4-7
Automatic climate control system (if equipped) ..................................................... 4-8
Control panel ...................................................... 4-8
To use as full-automatic climate control system .............................................................. 4-8
To use as semi-automatic climate control system .............................................................. 4-8
Fan speed control dial ......................................... 4-9
Temperature control dial ...................................... 4-9
Air flow control dial ............................................. 4-9 Air inlet selection button
.................................... 4-10
Air conditioner button ........................................ 4-10
Temperature sensors ......................................... 4-11
Operating tips for heater and air conditioner ...................................................... 4-11
Cleaning ventilation grille ................................... 4-11
Efficient cooling after parking in direct sunlight ........................................................... 4-11
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 conditions ................. 4-12
Air conditioner compressor shut-off when engine is heavily loaded .............................................. 4-12
Refrigerant for your climate control system ... ..... 4-12
Air filtration system ........................................... 4-12
Replacing the air filter ........................................ 4-13Climate control
4

4-12Climate control
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 of each spring. Have your
SUBARU dealer perform this check. & Cooling and dehumidifying in
high humidity and low tem-
perature weather conditions
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. &
Air conditioner compressor
shut-off when engine is
heavily loaded
To improve acceleration and gas mileage,
the air conditioner compressor is designed
to temporarily shut off during air condi-
tioner operation whenever the accelerator
is fully depressed such as during rapid
acceleration or when driving on a steepupgrade. & Refrigerant for your climate
control system
Your air conditioner uses ozone friendly
refrigerant HFC134a. Therefore, the meth-
od of adding, changing or checking the
refrigerant is different from the method for
CFC12 (Freon). Consult your SUBARU
dealer for service. Repairs needed as a
result of using the wrong refrigerant are
not covered under warranty. Air filtration system
If your vehicle
’s air conditioning system is
equipped with an air filtration system,
replace the filter element according to
the replacement schedule shown in the
following. This schedule should be fol-
lowed to maintain the filter ’s dust collec-
tion ability. Under extremely dusty condi-
tions, the filter should be replaced more
frequently. It is recommended that you
have your filter checked or replaced by
your SUBARU dealer. For replacement,
use only a genuine SUBARU air filter kit.
Replacement schedule: Every 12 months or 7,500 miles (12,000
km) whichever comes first

Fuel...................................................................... 7-2
Fuel requirements ............................................... 7-2
Fuel filler lid and cap ........................................... 7-4
State emission testing (U.S. only) ...................... 7-5
Preparing to drive ............................................... 7-6
Starting the engine .............................................. 7-7
Manual transmission vehicle ................................ 7-7
Automatic transmission vehicle ........................... 7-7
Stopping the engine ............................................ 7-8
Manual transmission –6 speeds (WRX-STI) ..... 7-9
Selecting reverse gear ......................................... 7-9
Shifting speeds ................................................... 7-9
Driving tips ........................................................ 7-10
Manual transmission –5 speeds (except
WRX-STI) .......................................................... 7-11
Shifting speeds .................................................. 7-11
Driving tips ........................................................ 7-12
Driver ’s Control Center Differential (DCCD)
(WRX-STI) ........................................................ 7-12
Auto mode ......................................................... 7-13
Manual mode ..................................................... 7-13
Temporary release .............................................. 7-15
Automatic transmission ..................................... 7-15
Selector lever ..................................................... 7-16 Shift lock release
............................................... 7-19
Limited slip differential (LSD) (if equipped) .................................................... 7-20
Power steering ................................................... 7-20
Braking ............................................................... 7-20
Braking tips ....................................................... 7-20
Brake system .................................................... 7-21
Disc brake pad wear warning indicators ............. 7-21
ABS (Anti-lock Brake System) .......................... 7-21
ABS system self-check ...................................... 7-22
ABS warning light .............................................. 7-22
Electronic Brake Force Distribution (EBD) system ............................................................. 7-23
Steps to take if EBD system fails ....................... 7-23
Parking your vehicle ......................................... 7-24
Parking brake .................................................... 7-24
Parking tips ....................................................... 7-25
Cruise control .................................................... 7-26
To set cruise control .......................................... 7-26
To temporarily cancel the cruise control ............. 7-27
To turn off the cruise control .............................. 7-27
To change the cruising speed .. .......................... 7-28
Starting and operating
7