2005 SUBARU IMPREZA WRX engine

2-3
Keys and doors
– CONTINUED –
The valet key fits only the ignition switch and driver’s
door lock. You can keep the trunk and glove box
locked when you leave your vehicle and valet key at a
parking facility.
Do not attach a large key holder or key case to
either key. If it banged against your knees while
you were driving, it could turn the ignitionswitch from the ON position to the ACC or OFF
position, thereby stopping the engine.
„ Key number
The key number is stamped on the metal plate at-
tached to the key set. Write down the key number and
keep it in another safe place, not in the vehicle. This
number is needed to make a replacement key if you
lose your key or lock it inside the vehicle.
Immobilizer (WRX-STi)
The immobilizer system is designed to prevent an un-
authorized person from starting the engine. Only keys
registered with your vehicle’s immobilizer system can
be used to operate your vehicle. Even if an unregis-
tered key fits into the ignition switch and can be turned
to the “START” position, the engine will automatically
stop after several seconds.
Each immobilizer key contains a transponder in which
the key’s ID code is stored. When a key is inserted into
the ignition switch and turned to the “ON” position, the
transponder transmits the key’s ID code to the immo-
bilizer system’s receiver. If the transmitted ID code
matches the ID code registered in the immobilizer sys-
tem, the system allows the engine to be started. Since
the ID code is transmitted and acted upon almost in-
stantly, the immobilizer system does not impede nor-
mal starting of the engine.
If the engine fails to start, pull out the key once before
trying again. (Refer to the “Ignition switch” section
[chapter 3].)
NOTE
To protect your vehicle from theft, please pay
close attention to the following security precau-tions:

2-4
Keys and doors
y
Never leave your vehicle unattended with its
keys inside. y Before leaving your vehicle, close all windows
and lock the doors and rear gate.y Do not leave spare keys or any record of your
key number in the vehicle.
y Do not place the key under direct sunlight or
anywhere it may become hot. y Do not get the key wet. If the key gets wet,
wipe it dry with a cloth immediately. „
Security ID plate
A) Key number plate
B) Security ID plate
The security ID is stamped on the metal plate attached
to the key set. Write down the security ID and keep it
in another safe place, not in the vehicle. This number
is needed to make a replacement key if you lose your
key or lock it inside the vehicle.
This number is also needed for replacement or repair
of the engine control unit, immobilizer control unit.A B
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2-17
Keys and doors
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Security system (if equipped)
The security system helps to protect your vehicle and
valuables from theft. The horn sounds and the turn
signal lights flash if someone attempts to break into
your vehicle. The starter motor is also interrupted to
prevent starting the vehicle without a key.
The system can be armed and disarmed with the re-
mote transmitter.
The system does not operate when the key is inserted
into the ignition switch. „System operation
The security system will give the following alarm indi-
cations when triggered: y The turn signal lights will flash and the horn will
sound intermittently. In addition, the starter motor will
not operate. y The alarm automatically resets after 30 seconds;
however, the alarm will reactivate if the vehicle is tam-
pered with again. The alarm will continue for six times
if any sensor continues to be activated.
The alarm is triggered by: y Opening a door, the rear gate or trunk lid.
y Application of physical shock to the vehicle (e.g. forced entry). Note that there are two alarm levels for
shock: warning and alarm. In warning mode, the alarm
detects lower level vibrations and triggers 2 warning
chirps on the horn and two flashes on the lights as a
deterrent to would be vandals. In alarm mode, higher
levels of shock are detected and the system will go into full alarm. y
Ignition switch being turned on while in armed state.
NOTE
With the valet mode selected, the security system
does not operate when the remote transmitter is
used for locking and unlocking. The security indi-
cator light in the combination meter flashes twice
per second to show that the valet mode is select-
ed. For details, refer to “Valet mode” in this sec- tion. „ Arming the system
T To arm the system using remote transmitter
1. Close all windows.
2. Remove the key from the ignition switch.
3. Open the doors and get out of the vehicle.
4. Make sure that the engine hood (and the trunk lid)
are locked.
5. Close all doors (and the rear gate on the Wagon).

2-19
Keys and doors
– CONTINUED –
properly closed. When you close the door, the system
will automatically arm and doors will automaticallylock. TTo arm the system using power door locking
switches
1. Close all windows.
2. Remove the key from the ignition switch.
3. Open the doors and get out of the vehicle.
4. Make sure that the engine hood (and the trunk lid)
are locked.
5. Close the doors (and the rear gate on the Wagon)
but leave only the driver’s door or the front passen-
ger’s door open. 6. Push the front side (“LOCK” side) of the power door
locking switch to set the door locks.
7. Close the door. An electronic chirp will sound once,
the turn signal lights will flash once and the security in-
dicator light will flash as follows:
All models except WRX-STi: once every approximate-
ly two seconds
WRX-STi: twice every approximately two seconds
NOTE
The system can be armed even if the engine hood
and/or the windows are opened. Always make
sure that they are fully closed before arming the
system. „
Disarming the system
Briefly press the “ ” button (for less than two sec-
onds) on the remote transmitter. The driver’s door will
unlock, an electronic chirp will sound twice, the turn
signal lights will flash twice and the security indicator
light will go off.
NOTE (WRX-STi)
If your vehicle is equipped with an immobilizer, the
immobilizer’s function will cause the security indi-
cator light to flash (once every approximately
three seconds) even after the system is disarmed.
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7
UG2038BB

3-1
3
Instruments and controls
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) ........ 3-6
Hazard warning flasher ................................ 3-7
Meters and gauges (WRX-STi) .................... 3-7 Combination meter illumination ...................... 3-7
Cancelling sequential illumination of the combination meter ......................................... 3-7
Speedometer ..................................................... 3-8
Odometer/Trip meter ........................................ 3-8
Tachometer ........................................................ 3-9
Fuel gauge ......................................................... 3-10
Temperature gauge ........................................... 3-11
Outside temperature indicator ......................... 3-12
REV indicator light and buzzer (WRX-STi) .................................................. 3-13Setting the alarm-level engine speed .............. 3-13
Deactivating the REV alarm system ................ 3-15
Meters and gauges (Except WRX-STi) ........ 3-15 Speedometer ..................................................... 3-15
Odometer/Trip meter ........................................ 3-15
Tachometer ........................................................ 3-16
Fuel gauge ......................................................... 3-17
Temperature gauge ........................................... 3-18
Outside temperature indicator (if equipped) .. 3-19
Warning and indicator lights ....................... 3-20 Seatbelt warning light and chime .................... 3-20
SRS airbag system warning light .................... 3-20
CHECK ENGINE warning light/
Malfunction indicator lamp ........................... 3-21
Charge warning light ........................................ 3-22
Oil pressure warning light ............................... 3-22
AT OIL TEMPerature warning light (for AT vehicles) ............................................. 3-22
Rear differential oil temperature warning light
(WRX-STi) ........................................................ 3-23
ABS warning light ............................................. 3-23
Brake system warning light ............................. 3-24
Door open warning light .................................. 3-26
All-wheel drive warning light (for AWD AT vehicles – if equipped) ............ 3-26
Intercooler water spray warning light
(WRX-STi) ........................................................ 3-26
Selector lever position indicator (AT vehicles) ................................................... 3-27
Turn signal indicator lights .............................. 3-27
High beam indicator light.................................. 3-27
Cruise control indicator light ........................... 3-27
Cruise control set indicator light .................... 3-27
Driver’s control center differential auto indicator light (WRX-STi) ............................... 3-28
Driver’s control center differential indicator lights (WRX-STi) ............................. 3-28
Headlight indicator light (WRX-STi) ................ 3-28
REV indicator light (WRX-STi) ......................... 3-28
Clock .............................................................. 3-29
Light control switch ...................................... 3-30 Headlights ......................................................... 3-30

3-4
Instruments and controls
The key can be turned from “ACC” to “LOCK” only
when the selector lever is in the “P” position. T
Manual transmission vehicles
The key can be turned from “ACC” to “LOCK” only
when the key is pushed in while turning it.
y Never turn the ignition switch to “LOCK”
while the vehicle is being driven or towed be-
cause that will lock the steering wheel, prevent-
ing steering control. And when the engine is
turned off, it takes a much greater effort than usual to steer.y
Before leaving the vehicle, always remove
the key from the ignition switch for safety and
never allow an unattended child to remain in
the vehicle. Failure to follow this procedure
could result in injury to a child or others. They
could operate the power windows, the sunroof
or other controls or even make the vehicle
move.
„ ACC
In this position the electrical accessories (radio, ciga-
rette lighter, etc.) can be used. „ ON
This is the normal operating position after the engine
is started. „ START
The engine is started in this position. The starter
cranks the engine to start it. When the key is released
(after the engine has started), the key automatically
returns to the “ON” position.
HS2020DA

3-5
Instruments and controls
– CONTINUED –
Do not turn the ignition switch to the “START”
position while the engine is running.
T For vehicle with immobilizer
If you fail to start your engine with your registered key,
once pull out the key (at this time, the security indicator
light blinks), and then insert the key in the ignition
switch and turn it to the “START” position to start your
engine again.
NOTE
The engine may not start in the following cases: y
The key grip is touching another key or a metal-
lic key holder. y The key is near another key that contains an im-
mobilizer transponder. „ Key reminder chime
The reminder chime sounds when the driver’s door
opens and the key is in the “LOCK” or “ACC” positions.
The chime stops when the key is removed from the ig-
nition switch. „ Ignition switch light
For easy access to the ignition switch in the dark, the
UG3049BA
UG3050BA

3-9
Instruments and controls
– CONTINUED –
odometer/trip meter will go off. TOdometer
The odometer shows the total distance that the vehicle
has been driven. T Double trip meter
1) A trip meter
2) B 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 function alter-
nately. 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.
To ensure safety, do not attempt to change the
function of the indicator during driving, as an
accident could result.
NOTE
If the connection between the combination meter
and battery is broken for any reason such as vehi-
cle maintenance 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.
Do not operate the engine with the pointer of
the tachometer in the red zone. In this range,
1
2
UG3027AB
A trip meter B trip meter