fuel SUBARU IMPREZA 2007 3.G User Guide

3-8Instruments and controls
&Fuel gauge
1) Low fuel warning light
The fuel gauge shows the approximate
amount of fuel remaining in the tank.
When the ignition switch is in the “LOCK ”
or “Acc ”position, the fuel gauge shows “E ”
even if the fuel tank contains fuel.
The gauge may move slightly during
braking, turning or acceleration due to fuel
level movement in the tank. NOTE
You will see the
“”sign in the fuel
gauge meter.
This indicates that the fuel filler door
(lid) is located on the right side of thevehicle. ! Low fuel warning light
The low fuel warning light comes on when
the tank is nearly empty [Approximately
2.3 US gal (9.0 liters, 1.9 Imp gal)].
It only operates when the ignition switch is
in the “ON ”position.
NOTE
This light does not go out unless the
tank is replenished up to an internal fuel quantity of approximately 4.0 US
gal (15 liters, 3.3 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.
& Temperature gauge
1) Normal operating range
The temperature gauge shows engine
coolant temperature when the ignition
switch is in the “ON ”position.
The coolant temperature will vary in

3-12Instruments and controls
To set the trip meter to zero, select the A
trip or B trip meter by pushing the knob
and keep the knob pushed for more than 2seconds.
CAUTION
To ensure safety, do not attempt to
change the function of the indicator
during driving, as an accident couldresult.
NOTE
If the connection between the combina-
tion meter and battery is broken for any
reason such as vehicle maintenance or
fuse replacement, the data recorded on
the trip meter will be lost. & Tachometer
The tachometer shows the engine speed
in thousands of revolutions per minute.
CAUTION
Do not operate the engine with the
pointer of the tachometer in the red
zone. In this range, fuel injection will
be cut by the engine control module
to protect the engine from overrev-
ving. The engine will resume run-
ning normally after the engine speed is reduced below the red zone.
& Fuel gauge
1) Low fuel warning light
The fuel gauge shows the approximate
amount of fuel remaining in the tank.
The gauge does not return to “E ” even
though the ignition switch is in the “Acc ”or
“ LOCK ”position.
The gauge may move slightly during
braking, turning or acceleration due to fuel
level movement in the tank. NOTE
You will see the
“FUEL DOOR”
sign in the fuel gauge.
This indicates that the fuel filler door
(lid) is located on the right side of thevehicle. ! Low fuel warning light
The low fuel warning light comes on when
the tank is nearly empty [approximately
2.3 US gal (9.0 liters, 1.9 Imp gal]. It only
operates when the ignition switch is in the“ ON ”position.
NOTE
This light does not go out unless the
tank is replenished up to an internal

fuel quantity of approximately 4.0 US
gal (15 liters, 3.3 Imp gal).
CAUTION
(Turbo model only)
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.
& Temperature gauge
1) Normal operating range
The temperature gauge shows engine
coolant temperature when the ignition
switch is in the “ON ”position. The coolant temperature will vary in
accordance with the outside temperature
and driving conditions.
We recommend that you drive moderately
until the pointer of the temperature gauge
reaches near the middle of the range.
Engine operation is optimum with the
engine coolant at this temperature range
and high revving operation when the
engine is not warmed up enough should
be avoided.
CAUTION
If the pointer exceeds the normal
operating range, safely stop the
vehicle as soon as possible. See “In case of emergency ”in
chapter 9. &
Outside temperature indica- tor
1) U.S.-spec. models
2) 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. Instruments and controls
3-13

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,

3-26Instruments and controls
Front fog light button (if equipped)
The front fog lights operate only when the
headlights are on low beam. Push the
front fog light button to turn the front fog
lights on.
Press the button again to turn them off.
The indicator light located on the button
will illuminate when the front fog lights areon. Wiper and washer
WARNING
In freezing weather, do not use the
windshield washer until the wind-
shield is sufficiently warmed by the
defroster.
Otherwise the washer fluid can
freeze on the windshield, blocking
your view.
CAUTION
. Do not operate the washer con-
tinuously for more than 10 sec-
onds, or when the washer fluid
tank is empty. This may cause
overheating of the washer motor.
Check the washer fluid level
frequently, such as at fuel stops.
. Do not operate the wipers when
the windshield or rear window is
dry. This may scratch the glass,
damage the wiper blades and
cause the wiper motor to burn
out. Before operating the wiper
on a dry windshield or rear
window, always use the wind-
shield washer. .
In freezing weather, be sure that
the wiper blades are not frozen to
the windshield or rear window
before switching on the wipers.
Attempting to operate the wiper
with the blades frozen to the
window glass could cause not
only the wiper blades to be
damaged but also the wiper mo-
tor to burn out. If the wiper
blades are frozen to the window
glass, be sure to operate the
defroster, windshield wiper dei-
cer (if equipped) or rear window
defogger before turning on the
wiper.
. If the wipers stop during opera-
tion because of ice or some other
obstruction on the window, the
wiper motor could burn out even
if the wiper switch is turned off. If
this occurs, promptly stop the
vehicle in a safe place, turn the
ignition switch to the “LOCK ”
position and clean the window
glass to allow proper wiper op-eration.
. Use clean water if windshield
washer fluid is unavailable. In
areas where water freezes in
winter, use SUBARU Windshield
Washer Fluid or the equivalent.

Floor mat (if equipped)
A retaining pin is located on the driver’s
side of the vehicle next to the fuel filler
door release.
The floor mat is secured using the built-in
grommet, by placing the grommet over the
pin and pushing downward.
CAUTION
Make sure the driver ’s floor mat is
placed back in its proper location
and correctly secured on its retain-
ing pin. If the floor mat slips forward
and interferes with the movement of
the pedals during driving, it could
cause an accident. Coat hooks
The coat hook is attached to the rear left
and rear right passenger
’s hand grip.
CAUTION
Never hang anything on the coat
hook that might obstruct the driver ’s
view or that could cause injury in a
sudden stop or in a collision. And
do not hang items on the coat hook
that weigh 2.2 lbs (1 kg) or more. Interior equipment
6-9

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

7-2Starting and operating
Fuel
CAUTION
Use of a fuel which is low in quality
or use of an inappropriate fuel
additive may cause engine damage.
& Fuel requirements
! 2.5-liter non-turbo models
The 2.5-liter non-turbo engine is designed
to operate using unleaded gasoline with
an octane rating of 87 AKI or higher. ! WRX
The 2.5-liter turbo engine is designed to
operate using premium unleaded gasoline
with an octane rating of 91 AKI or higher. If
premium unleaded gasoline is not avail-
able, regular unleaded gasoline with an
octane rating of 87 AKI or higher may be
temporarily used. For optimum engine
performance and driveability, it is required
that you use premium grade unleadedgasoline. NOTE
Be sure to use premium unleaded
gasoline of 91 AKI or higher for WRX.
If other gasoline (lower than 91 AKI) is used, knocking, reduced output and
poor accelerator response will result. !
WRX-STI
The 2.5-liter turbo engine is designed to
operate using super-premium unleaded
gasoline with an octane rating of 93 AKI or
higher. If super-premium unleaded gaso-
line with an octane rating of 93 AKI or
higher is not available, premium unleaded
gasoline with an octane rating of 91 AKI or
higher may be temporarily used. For
optimum engine performance and drive-
ability, it is required that you use super-
premium grade unleaded gasoline with an
octane rating of 93 AKI or higher.
NOTE
Be sure to use super-premium un-
leaded gasoline of 93 AKI or higher
for WRX-STI. If other gasoline (lower
than 93 AKI) is used, knocking, re-
duced output and poor accelerator
response will result. ! 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).
Using a gasoline with a lower octane
rating can cause persistent and heavy knocking, which can damage the engine.
Do not be concerned if your vehicle
sometimes knocks lightly when you drive
up a hill or when you accelerate. See your
dealer or a qualified service technician if
you use a fuel with the specified octane
rating and your vehicle knocks heavily or
persistently. !
Unleaded gasoline
The neck of the fuel filler pipe is designed
to accept only an unleaded gasoline filler
nozzle. Under no circumstances should
leaded gasoline be used because it will
damage the emission control system and
may impair driveability and fuel economy. ! Gasoline for California-certified LEV
If your vehicle was certified to California ’s
low emission vehicle (LEV) standards as
indicated on the underhood tune-up label,
it is designed to optimize engine and
emission performance with gasoline that
meets the clean burning low-sulfur Cali-
fornia gasoline specifications. If you live in
any other state than California, your
vehicle will operate on gasoline meeting
Federal specifications. Gasoline sold out-
side California is permitted to have higher
sulfur levels, which may affect the perfor-
mance of your vehicle ’s catalytic converter
and may produce a sulfur exhaust odor or

smell. SUBARU recommends that you try
a different brand of unleaded gasoline
having lower sulfur to determine if the
problem is fuel related before returning
your vehicle to an authorized dealer forservice. !MMT
Some gasoline contains an octane-en-
hancing additive called MMT (Methylcy-
clopentadienyl Manganese Tricarbonyl). If
you use such fuels, your emission control
system performance may deteriorate and
the CHECK ENGINE warning light/Mal-
function indicator lamp may turn on. If this
happens, return to your authorized
SUBARU Dealer for service. If it is
determined that the condition is caused
by the type of fuel used, repairs may not
be covered by your warranty. ! Gasoline for cleaner air
Your use of gasoline with detergent
additives will help prevent deposits from
forming in your engine and fuel system.
This helps keep your engine in tune and
your emission control system working
properly, and is a way of doing your part
for cleaner air. If you continuously use a
high quality fuel with the proper detergent
and other additives, you should never
need to add any fuel system cleaning
agents to your fuel tank. Many gasolines are now blended with
materials called oxygenates. Use of these
fuels can also help keep the air cleaner.
Oxygenated blend fuels, such as MTBE
(Methyl Tertiary Butyl ether) or ethanol
(ethyl or grain alcohol) may be used in
your vehicle, but should contain no more
than 15% MTBE or 10% ethanol for the
proper operation of your SUBARU.
In addition, some gasoline suppliers are
now producing reformulated gasolines,
which are designed to reduce vehicle
emissions. SUBARU approves the use of
reformulated gasoline.
If you are not sure what the fuel contains,
you should ask your service station
operators if their gasolines contain deter-
gents and oxygenates and if they have
been reformulated to reduce vehicle emis-sions.
As additional guidance, only use fuels
suited for your vehicle as explained in thefollowing. .
Fuel should be unleaded and have an
octane rating no lower than that specified
in this manual. . Methanol (methyl or wood alcohol) is
sometimes mixed with unleaded gasoline.
Methanol can be used in your vehicle
ONLY if it does not exceed 5% of the fuel
mixture ANDif it is accompanied by sufficient quantities of the proper cosol-
vents and corrosion inhibitors required to
prevent damage to the fuel system. Do not
use fuel containing methanol
EXCEPT
under these conditions. . If undesirable driveability problems are
experienced and you suspect they may be
fuel related, try a different brand of gaso-
line before seeking service at your
SUBARU dealer. . Fuel system damage or driveability
problems which result from the use of
improper fuel are not covered under the
SUBARU Limited Warranty.
CAUTION
Do not let fuel spill on the exterior
surfaces of the vehicle. Fuels con-
taining alcohol may cause paint
damage, which is not covered under
the SUBARU Limited Warranty. Starting and operating
7-3
– CONTINUED –

7-4Starting and operating
&Fuel filler lid and cap
! Refueling
1. To open the fuel filler lid, pull the lid
release lever up. The lever is on the floor
at the left of the driver ’s seat.
1) Open
2) Close
2. Remove the fuel filler cap by turning it
slowly counterclockwise.
WARNING
. Gasoline vapor is highly flam-
mable. Before refueling, always
first stop the engine and make
sure that there are no lighted
cigarettes, open flames or elec-
trical sparks in the adjacent area. .
When opening the cap, do not
remove the cap quickly. Fuel may
be under pressure and spray out
of the fuel filler neck especially in
hot weather, which may cause
injury.
3. Stop filling the tank after the fuel filler
pump automatically stops. Do not add any
more fuel.
4. Put the cap back on, turn it clockwise
until you hear a clicking noise. Be certain
not to catch the tether under the cap whiletightening.
5. Close the fuel filler lid completely.
If you spill any fuel on the painted surface,
rinse it off immediately. Otherwise, the
painted surface could be damaged. NOTE . You will see the “
”or “FUEL
DOOR” sign in the fuel gauge. This
indicates that the fuel filler door (lid) is
located on the right side of the vehicle.. If the fuel filler cap is not tightened
until it clicks or if the tether is caught
under the cap, the CHECK ENGINE
warning light may come on. Refer tothe “Warning and indicator lights ”
section located in chapter 3.
(Turbo model only) Promptly put fuel in