2006 SUBARU IMPREZA engine

3-8 Instruments 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 brak-
ing, turning or acceleration due to fuel lev-
el 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 the
vehicle.
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).
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 ac-
cordance with the outside temperature
and driving conditions.
1300615300310
Promptly put fuel in the tank when-
ever the low fuel warning light
comes on. Engine misfires as a re-
sult of an empty tank could cause
damage to the engine.
1
300616

Instruments and controls 3-9
– CONTINUED –
We recommend that you drive moderately
until the pointer of the temperature gauge
reaches near the middle of the range. En-
gine 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.
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 F ( –30 to 50 C).
The indicator can give a false reading un-
der 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.
REV indicator light and buzz-
er (WRX-STI)
The REV alarm system issues a warning
using the REV indicator light (and a buzz-
er if additionally selected) when the en-
gine speed reaches a level previously set
using the REV setting knob.
If you press the trip knob when the ignition
switch is in the “LOCK ” position, the out-
side temperature indicator will show the
engine speed that has already been set.
NOTE
Even if the REV alarm system is not
set, the REV indicator light will come
on whenever the engine speed enters
the tachometer ’s red zone.
If the pointer exceeds the normal
operating range, safely stop the ve-
hicle as soon as possible.
See the
“In case of emergency ” in
chapter 9.
1
2
300617
300239

3-10 Instruments and controls
Setting the alarm-level en-
gine speed
1. Turn the REV setting knob clockwise or
counterclockwise, then release it and let it
return to its initial position. The buzzer will
sound. The REV alarm system is now
ready to be set.
2. Turn the REV setting knob to select the
desired alarm-level engine speed.
At this time, the outside temperature indi-
cator will show the engine-speed setting.
Counterclockwise ( –) for less than 0.5
second: Speed setting changes down-
ward by 100 rpm.
Clockwise (+) for less than 0.5 sec-
ond: Speed setting changes upward by
100 rpm.
Counterclockwise ( –) for 0.5 second or longer: Speed setting changes down-
ward by 1,000 rpm.
Clockwise (+) for 0.5 second or long-
er: Speed setting changes upward by
1,000 rpm.
The speed setting will stop changing if it
reaches 0 rpm or the maximum engine
speed.

The alarm-level engine speed can be set
(in 100 rpm steps) within a range from
2,000 to 7,500 rpm.
The indicator shows the setting as follows:
Approximately three seconds after you
stop turning the knob, the REV alarm sys-
tem will automatically enter its next setting
mode (step 3 below), in which you can ac-
tivate or deactivate the buzzer. 3. Activate or deactivate the buzzer as
desired using the REV setting knob.Turn the knob clockwise (+) to acti-
vate the buzzer. The indicator will show “ ON ”, and the buzzer will sound three
times. With the buzzer activated, en-
gine-speed warnings are given by both
the REV indicator light and the buzzer.
Turn the knob counterclockwise ( –) to
deactivate the buzzer. The indicator will
show “– –” , and the buzzer will not
sound. With the buzzer deactivated, en-
gine-speed warnings are given only by
the REV indicator light.
Approximately three seconds after you
stop turning the knob, the buzzer will
sound once to indicate the end of the set-
ting procedure. The indicator will return to
showing the outside temperature.
Also, the tachometer needle will return to
approximately “0 ”.
NOTE
The REV alarm system does not op-
erate while settings are being entered.
The speed-setting mode terminates
if 0 rpm is selected.
The speed-setting mode is canceled
if the ignition switch is turned to OFF or
the vehicle starts moving before the
setting procedure is finished.
Speed setting is impossible when
300618Speed (rpm) Indication
0 00
2,000 20
2,100 21
7,400 74
7,500 75

Instruments and controls 3-11
– CONTINUED –
the vehicle is moving.
The set engine speed may differ from
the engine speed shown by the ta-
chometer. Use the engine speed
shown by the tachometer as a rough
guide.
Deactivating the REV alarm
system
To deactivate the REV alarm system ’s
REV indicator light and buzzer functions,
set the alarm-level engine speed to 0 (ze-
ro) rpm.
Meters and gauges (Except
WRX-STI)
Speedometer
The speedometer shows the vehicle
speed.
Odometer/Trip meter
1) Trip meter
2) Odometer
This meter displays the odometer and two
trip meters when the ignition switch is in
the “LOCK ”, “ACC ” or “ON ” position.
Odometer
The odometer shows the total distance
that the vehicle has been driven.
Double trip meter
The trip meter shows the distance that the
vehicle has been driven since you last set
it to zero.
To change the mode indication, briefly
push the knob.
Each press of the knob changes the func-
tion alternately.
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
2 seconds.
1
2
300614
300660
A trip meter B trip meter

3-12 Instruments and controls
NOTE
If the connection between the combi-
nation meter and battery is broken for
any reason such as vehicle mainte-
nance or fuse replacement, the data re-
corded on the trip meter will be lost.
Tachometer
The tachometer shows the engine speed
in thousands of revolutions per minute.
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 brak-
ing, turning or acceleration due to fuel lev-
el movement in the tank.
NOTE
You will see the “FUEL DOOR ”
sign near the fuel gauge.
This indicates that the fuel filler door
(lid) is located on the right side of the
vehicle.
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).
To ensure safety, do not attempt to
change the function of the indicator
during driving, as an accident could
result.
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.
1
300619300121

Instruments and controls 3-13
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 ac-
cordance 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. En-
gine 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.
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 F ( –30 to 50 C).
The indicator can give a false reading un-
der 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.
(Turbo model only)
Promptly put fuel in the tank when-
ever the low fuel warning light
comes on. Engine misfires as a re-
sult of an empty tank could cause
damage to the engine.
1
300620
If the pointer exceeds the normal
operating range, safely stop the ve-
hicle as soon as possible.
See
“In case of emergency ” in chap-
ter 9.
1
2
300621

3-14 Instruments 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 igni-
tion switch to the “ON ” position. The fol-
lowing lights come on:
Seatbelt warning light
SRS airbag system warning light
Front passenger ’s frontal airbag ON in-
dicator 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 (AT vehi-
cles)
Cruise control indicator light (if
equipped)
Cruise control set indicator light (if
equipped)
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 re-
quired by current safety standards. There
is a seatbelt warning light in the combina-
tion meter.
If the driver has not yet fastened the seat-
belt 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 re-
main lit for 15 seconds. If the driver ’s seat-
belt is still not fastened even 15 seconds
later (21 seconds after turning ON the ig-
nition switch), the warning lights will alter-
nate between flashing and steady illumi-
nation 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 af-
ter fastening, the seatbelt warning de-
vice operates as follows according to
the vehicle speed.
At speeds lower than approximate-
ly 9 mph (15 km/h)
The warning light will alternate be-
tween flashing and steady illumina-
tion 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 be-
tween flashing and steady illumina-
tion 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 by unfastening and refastening
the driver ’s seatbelt. When the ignition
switch is turned ON next time, howev-
er, the complete sequence of the warn-
ing operation resumes. For further de-
tails about canceling the warning oper-
ation, please contact your SUBARU
dealer.

3-16 Instruments and controls
CHECK ENGINE warn-
ing light/Malfunction in-
dicator lamp
If this light comes on steadily or blinks
while the engine is running, it may indicate
that there is a problem or potential prob-
lem somewhere in the emission control
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 au-
thorized SUBARU dealer immediately.
If the light is blinking:
If the light is blinking while driving, an en-
gine misfire condition has been detected
which may damage the emission control
system.
To prevent serious damage to the emis-
sion control system, you should do the fol-
lowing.
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 pos-
sible. 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 con-
dition but the light remains on, contact
your nearest SUBARU dealer immediate-
ly.
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
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
damage, which may not be covered
by your vehicle
’s warranty.