2011 SUBARU IMPREZA engine

3-10Instruments and controls
&Fuel gauge
Turbo models
Non-turbo models
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.
If you press the trip knob while the ignition
switch is in the “LOCK ”or “Acc ”position,
the fuel gauge will light up and indicate the
amount of fuel remaining in the tank.
If, while the fuel gauge is indicating the
amount of fuel remaining in the tank, you
(a) do not press the trip knob for 10
seconds or (b) open and close the driver ’s
door, the fuel gauge indication will turn off.
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 illuminates
when the tank is nearly empty [approxi-
mately 2.6 US gal (10.0 liters, 2.2 Impgal)].
It only operates when the ignition switch is
in the “ON ”position.
NOTE
This light does not turn off 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
illuminates. Engine misfires as a
result of an empty tank could cause
damage to the engine.

&Temperature gauge (turbo models)
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.
Refer to “Engine overheating ”F9-
13. REV indicator light and buz-
zer (STI)
The REV alarm system issues a warning
using the REV indicator light (and a
buzzer if additionally selected) when the
engine speed reaches a level previously
set using the trip knob.
If you press the trip knob, the odometer/
trip meter will show the engine speed that
has already been set.Instruments and controls
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3-12Instruments and controls
NOTE
Even if the REV alarm system is not set,
the REV indicator light will illuminate
whenever the engine speed enters thetachometer ’s red zone.
& Setting the alarm-level en-
gine speed
1. Push the trip knob to select “REV ”on
the combination meter.
2. When the trip knob is pushed for more
than 2 seconds, the thousands placeflashes.
3. Release your finger from the trip knob
once, then push and hold the trip knob
again. The number will change sequen-
tially from 2 to 7. Release your finger at
the desired alarm-level engine speed.
4. When the trip knob is pushed, the
hundreds place flashes.
5. Release your finger from trip knob
once, then push and hold the trip knob
again. The number will change sequen-
tially from 0 to 9. Release your finger at
the desired alarm-level engine speed.
6. When the trip knob is pushed, the
buzzer sounds and the REV alarm system
will automatically enter its new setting
mode (step 7 below), in which you can
activate or deactivate the buzzer.

The alarm-level engine speed can be set
(in 100 rpm steps) within the range from
2,000 rpm to 7,000 rpm.7. Every time that the trip knob is pushed
and held, the buzzer changes to activate
or deactivate.b –on: Activated
b –off: Deactivated
When the mode is changed to “activate ”,
the buzzer sounds.
8. Push the trip knob to complete the
setting procedure.
NOTE . The REV alarm system does not
operate while settings are being en- tered.. The speed-setting mode terminates
if “--00 ”rpm is selected.
. The speed-setting mode is canceled
if the ignition switch is turned from ON

to OFF, OFF to ON, or the vehicle starts
moving before the setting procedure isfinished..Setting the speed is impossible
when the vehicle is moving.. The set engine speed may differ
from the engine speed shown by the
tachometer. Use the engine speed
shown by the tachometer as a roughguide.. If the setting operation is performed
with the engine switch turned off, the
REV indicator light turns off and the
setting operation is aborted when you
have stopped the setting operation for
approximately 10 seconds. . If the setting operation is performed
with the engine switch turned off, the
REV indicator light turns off and the
setting operation is aborted when you
open and close the driver ’s door.
& Deactivating the REV alarm system
To deactivate the REV indicator light and
buzzer functions of the REV alarm system,
set the thousands place of the alarm-level
engine speed to “–”. Warning and indicator lights
Several of the warning and indicator lights
illuminate momentarily and then turn off
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. For
the system check, the following lights
illuminate and turn off after several sec-
onds or after the engine has started:
: Seatbelt warning light (The seatbelt warning light turns off
only when the driver fastens theseatbelt.)
: Front passenger ’s seatbelt warning
light
(The seatbelt warning light turns off
only when the front seat passenger
fastens the seatbelt.)
: SRS airbag system warning light
ON /
: Front passenger ’s frontal airbag
ON indicator light
/: Front passenger ’s frontal airbag
OFF indicator light
: CHECK ENGINE warning light/Mal- function indicator lamp
: Coolant temperature high warning light(non-turbo models)
: Charge warning light
: Oil pressure warning light
: AT OIL TEMP warning light (AT models)
: Rear differential oil temperature warn-ing light (STI)
: Low tire pressure warning light (U.S.- spec. models)
/: ABS warning light
/: Brake system warning light
: Low fuel warning light
: Hill start assist warning light (MT models –if equipped)/Hill start assist
OFF indicator light (STI)
: Door open warning light
: AWD warning light (AT models)
: Vehicle Dynamics Control operation
indicator light
: Vehicle Dynamics Control warning light/Vehicle Dynamics Control OFF
indicator light/Traction Control OFF
indicator light (STI) Instruments and controls
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3-16Instruments and controls
.Continuous illumination of the
warning light
. Illumination of the warning light
while driving
& Front passenger ’s frontal
airbag ON and OFF indica- tors
ON /: Front passenger ’s frontal airbag ON
indicator
/: Front passenger ’s frontal airbag OFF
indicator
The front passenger ’s frontal airbag ON
and OFF indicators show you the status of
the front passenger ’s SRS frontal airbag.
The indicators are located next to the
clock in the center portion of the dash- board.
When the ignition switch is turned to the “
ON ”position, both the ON and OFF
indicators illuminate for 6 seconds during
which time the system is checked. Follow-
ing the system check, both indicators turn
off for 2 seconds. After that, one of the
indicators illuminates depending on the
status of the front passenger ’s SRS frontal
airbag determined by the SUBARU ad-
vanced frontal airbag system monitoring.
If the front passenger ’s SRS frontal airbag
is activated, the passenger ’s frontal airbag
ON indicator will illuminate while the OFF
indicator will remain off.
If the front passenger ’s SRS frontal airbag
is deactivated, the passenger ’sfrontal
airbag ON indicator will remain off while
the OFF indicator will illuminate.
With the ignition switch turned to the “ON ”
position, if both the ON and OFF indica-
tors remain illuminated or off simulta-
neously even after the system check
period, the system is malfunctioning.
Contact your SUBARU dealer immedi-
ately for an inspection. &
CHECK ENGINE warn-
ing light/Malfunction in-
dicator lamp
CAUTION
If the CHECK ENGINE light illumi-
nates while you are driving, have
your vehicle checked/repaired by
your SUBARU dealer as soon as
possible. Continued vehicle opera-
tion without having the emission
control system checked and re-
paired as necessary could cause
serious damage, which may not be
covered by your vehicle ’s warranty.
If this light illuminates 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 illuminates steadily
If the light illuminates steadily while driving
or does not turn off 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 illuminates 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 illuminat-
ing 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 turn off, 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. The CHECK ENGINE warning light may
stop blinking and illuminate steadily after
several driving trips. You should have your
vehicle checked by an authorized
SUBARU dealer immediately.
& Coolant temperature
low indicator light (non-
turbo models)/Coolant
temperature high warn-
ing light (non-turbo models)
CAUTION
. After turning the ignition switch
to the “ON ”position, if this
indicator light/warning light be-
haves in any of the following
ways, the electrical system may
be malfunctioning. Contact your
SUBARU dealer immediately for
an inspection. – It remains blinking in RED.
– It remains illuminated in RED
for more than 2 seconds.
– It remains blinking in RED and
BLUE alternately.
. While driving, if this indicator
light/warning light behaves in
any of the following ways, take the specified appropriate mea-
sure listed below. –
Blinking or illuminated in
RED:
Safely stop the vehicle as
soon as possible, and refer
to the emergency steps to
take in the case of engine
overheating. After that, have
the system checked by your
nearest SUBARU dealer. Referto “Engine overheating ”F9-
13.
– Blinking in RED and BLUE
alternately:
The electrical system may be
malfunctioning. Contact your
SUBARU dealer for an inspec-tion.
This coolant temperature low indicator
light/coolant temperature high warning
light has the following three functions. . Illumination in BLUEindicates insuffi-
cient warming up of the engine. Blinking in REDindicates that the
engine is close to overheating. Illumination in REDindicates overheat-
ing condition of the engine
For a system check, this indicator light/
warning light illuminates in REDfor
Instruments and controls
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3-18Instruments and controls
approximately 2 seconds when the igni-
tion switch is turned to the “ON ”position.
After that, this indicator light/warning light
changes to BLUEand maintains illumina-
tion in BLUE. This BLUE illuminated light
turns off when the engine is warmed up
sufficiently.
If the engine coolant temperature in-
creases over the specified range, the
indicator light/warning light blinks inRED . At this time, the engine is close to
overheating.
If the engine coolant temperature in-
creases further, the indicator light/warning
light illuminates in REDcontinuously. At
this time, the engine may be overheating.
When the indicator light/warning light
blinks in REDor illuminates in RED, safely
stop the vehicle as soon as possible, and
refer to the emergency steps to take in the
case of engine overheating. Refer to“ Engine overheating ”F 9-13. After that,
have the system checked by your nearest
SUBARU dealer.
Also, if the indicator light/warning light
often blinks in RED, the electrical system
may be malfunctioning. Contact your
SUBARU dealer for an inspection. NOTE
If the engine is restarted after a certain
driving condition, this indicator light/
warning light may illuminate in RED.
However, this is not a malfunction if the
indicator light/warning light turns off
after a short time. &
Charge warning light
If this light illuminates when the engine is
running, it may indicate that the charging
system is not working properly.
If the light illuminates while driving or does
not turn off 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 illuminated,
contact your nearest SUBARU dealer
immediately. &Oil pressure warning light
If this light illuminates 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 illuminates while driving or does
not turn off 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
illuminated, contact your nearest
SUBARU dealer immediately.
For details about checking the engine oil
level or adding the engine oil, refer to“
Engine oil ”F 11-10.
CAUTION
Do not operate the engine with the
oil pressure warning light illumi-
nated. This may cause serious en-
gine damage.
& AT OIL TEMP warning
light (AT models)
If this light illuminates when the engine is
running, it may indicate that the automatic
transmission fluid temperature is too hot.
If the light illuminates while driving, im-
mediately stop the vehicle in a safe place
and let the engine idle until the warning
light turns off. !Automatic transmission control
system warning
If the “AT OIL TEMP ”warning light flashes
after the engine starts, it may indicate that
the automatic transmission control system

is not working properly. Contact your
nearest SUBARU dealer for service im-
mediately. &Rear differential oil
temperature warning
light (STI)
CAUTION
Reduce vehicle speed and park the
vehicle in a safe place as soon as
possible if the R.DIFF TEMP light
illuminates. Continued driving with
this light illuminated can damage
the rear differential and other parts
of the powertrain.
If this light illuminates when the engine is
running, it may indicate that the rear
differential oil temperature is too hot.
At this time, the driver ’s control center
differential will automatically cancel the
current torque-distribution ratio setting and
adopt its minimum ratio.
If the light illuminates while driving, reduce
vehicle speed and stop the vehicle at the
nearest safe place. Park the vehicle for
several minutes. After the light turns off,
you can start driving.
If the light does not turn off, contact the
nearest SUBARU dealer for service. NOTE .
If the tire pressures are not correct
and/or the tires are not all the same
size and brand, the rear differential will
be heavily loaded when the vehicle is
driven, resulting in an abnormally high
oil temperature.. The rear differential oil will deterio-
rate if its temperature increases en-
ough for the rear differential oil tem-
perature warning light to illuminate. It is
advisable to have the rear differential
oil replaced as soon as possible. & Low tire pressure
warning light (U.S.-spec. models)
When the ignition switch is turned to the “ON ”position, the low tire pressure warn-
ing light will illuminate for approximately 2
seconds to check that the tire pressure
monitoring system (TPMS) is functioning
properly. If there is no problem and all tires
are properly inflated, the light will turn off.
Each tire, including the spare (if provided),
should be checked monthly when cold
and inflated to the inflation pressure
recommended by the vehicle manufac-
turer on the vehicle placard or tire inflation
pressure label. (If your vehicle has tires of
a different size than the size indicated on the vehicle placard or tire inflation pres-
sure label, you should determine the
proper tire inflation pressure for thosetires.)
As an added safety feature, your vehicle
has been equipped with a tire pressure
monitoring system (TPMS) that illuminates
a low tire pressure telltale when one or
more of your tires is significantly under-
inflated. Accordingly, when the low tire
pressure telltale illuminates, you should
stop and check your tires as soon as
possible, and inflate them to the proper
pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life,
and may affect the vehicle
’s handling and
stopping ability.
Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver ’s responsibility to
maintain correct tire pressure, even if
under-inflation has not reached the level
to trigger illumination of the TPMS low tire
pressure telltale.
Your vehicle has also been equipped with
a TPMS malfunction indicator to indicate
when the system is not operating properly.
The TPMS malfunction indicator is com-
bined with the low tire pressure telltale.
When the system detects a malfunction, Instruments and controls
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