2006 SUBARU IMPREZA WRX Owners Manual

6-8 Interior equipment
If the socket has been used for electrical
appliances, damage may have been done
to the internal mechanism that causes a
cigarette lighter to “pop out ” after its ele-
ment has been heated. For that reason, a
cigarette lighter, even if it is a genuine
part, should not be used in the socket. If
you want to use the socket for a cigarette
lighter again, or to protect your purchaser
before you sell your vehicle, have your
SUBARU dealer replace the socket with a
new one.
Ashtray
To open the ashtray, push lightly on the lid
below the climate controls.
Fully close the lid after using it to help re-
duce residual smoke.
To remove the ashtray for cleaning, hold
the right and left sides of the ashtray and
pull it out.
NOTE
Particles of ash and tobacco will accu-
mulate around the hinges of the ash-
tray ’s inner lid. Clean them off using a
toothbrush or other narrow-ended im-
plement.
If the plug on your electric appli-
ance is either too loose or too
tight for the socket, this can result
in a poor contact or cause the
plug to get stuck. Only use plugs
that fit properly.
Use of an electric appliance in the
socket for a long period of time
while the engine is not running
can cause battery discharge.
Before driving your vehicle, make
sure that the plug and the cord on
your electrical appliance will not
interfere with your shifting gears
and operating the accelerator and
brake pedals. If they do, do not
use the electrical appliance while
driving.
600222
Do not use ashtrays as waste recep-
tacles or leave a lighted cigarette in
an ashtray. This could cause a fire.
600097

Interior equipment 6-9
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.
Coat hook
The coat hook is attached to the rear left
passenger ’s hand grip.
600513
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.
600481
Never hang anything on the coat
hook that might obstruct the driv-
er ’s view or that could cause injury
in sudden stops or in a collision.
And do not hang items on the coat
hook that weigh 2.2 lbs (1 kg) or
more.
600224

6-10 Interior equipment
Cargo area cover (Wagon – if
equipped)
The cargo area cover is provided for cov-
ering the cargo area and to protect its con-
tents from direct sunlight. This cover is de-
tachable to make room for additional car-
go.
Using the cover
To extend the cover, pull the end of the
cover out of the housing, then insert its
hooks into the catches as shown. To re-
wind it, unhook it from the catches and it
will rewind automatically. You should hold
on to the cover and guide it back into the
cover housing while it is rewinding.
To remove the cover
1. Rewind the cover. 2. Pull either sleeve on the end of the cov-
er housing to shorten the cover
’s length.
3. Take it off the retainer.
Stowage of the cover
600225
Do not place anything on the ex-
tended cover. Putting excessive
weight on the extended cover can
break it and an object on the cover
could tumble forward in the event of
a sudden stop or collision. This
could cause serious injury.
Be careful not to scratch the rear
gate stays while extending and re-
winding the cover.
Scratches on the stays could cause
leakage of gas from the stays, which
may result in their inability to hold
the rear gate open.
600226
600227

Interior equipment 6-11
The cargo area cover can be stowed un-
der the cargo floor.
To install the cover housing
1. Pull either sleeve on the end of the cov-
er housing to shorten the cover ’s length.
2. Insert the projections located on the
both ends of the sleeve into the recesses
of the retainers.
Cargo tie-down hooks (Wag-
on – if equipped)
The cargo area is equipped with four tie-
down hooks so that cargo can be secured
with a cargo net or ropes.
When using the tie-down hooks, turn them
down out of the storing recesses. When
not in use, put the hooks up into the stor-
ing recesses.
600228
600229
The cargo tie-down hooks are de-
signed only for securing light cargo.
Never try to secure cargo that ex-
ceeds the capacity of the hooks. The
maximum load capacity is 44 lbs (20
kg) per a hook.

6-12 Interior equipment
Cargo area bars
1) Cargo area bar
In the cargo area, there are two bars (one
on each side) to which a net can be at-
tached.
Under-floor storage compart-
ment (if equipped)
The storage compartment is located un-
der the floor of the cargo area and can be
used to store small items. To open the lid,
pull the tab up.
NOTE
When storing a flat tire, put the storage
tray in the cargo area.Do not place objects with a total
weight exceeding 6.6 lbs (3 kg) on a
net attached to the cargo area bars.
1
600528
Always keep the lids closed while
driving to reduce the risk of injury
in the event of sudden stop or an
accident.
600539
Do not store spray cans, contain-
ers with flammable or corrosive
liquids or any other dangerous
items in the storage compartment.

7
Starting and operating
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 ............................ ........ 7-16
Selector lever for automatic transmission ......... .. 7-16
Shift lock release ................................ .................... 7-19
Limited slip differential (LSD) (if equipped) ..... 7-20
Power steering .................................... ............... 7-21Braking ...........................................
..................... 7-21
Braking tips ...................................... ....................... 7-21
Brake system ...................................... .................... 7-21
Disc brake pad wear warning indicators ............ .. 7-22
ABS (Anti-lock Brake System) ...................... .... 7-22
ABS system self-check ............................. ............. 7-22
ABS warning light ................................. .................. 7-23
Electronic Brake Force Distribution (EBD) system ............................................ .................. 7-24
Steps to take if EBD system fails ................. ......... 7-24
Parking your vehicle .............................. ............ 7-25
Parking brake ..................................... ..................... 7-25
Parking tips ...................................... ....................... 7-25
Cruise control .................................... ................. 7-27
To set cruise control ............................. ................. 7-27
To temporarily cancel the cruise control .......... ... 7-28
To turn off the cruise control .................... ............. 7-28
To change the cruising speed ...................... ......... 7-28

7-2 Starting and operating
Starting and operatingFuel
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 unleaded
gasoline.
NOTE
Be sure to use premium unleaded gas-
oline 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 opti-
mum engine performance and driveability,
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 unlead-
ed gasoline of 93 AKI or higher for
WRX-STI. If other gasoline (lower than
93 AKI) is used, knocking, reduced out-
put and poor accelerator response will
result.
Fuel octane rating
This octane rating is the average of the
Research Octane and Motor Octane num-
bers and is commonly referred to as the
Anti Knock Index (AKI).
Using a gasoline with a lower octane rat-
ing can cause persistent and heavy
knocking, which can damage the engine.
Do not be concerned if your vehicle some- times 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
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 Califor-
nia gasoline specifications. If you live in
any other state than California, your vehi-
cle will operate on gasoline meeting Fed-
eral specifications. Gasoline sold outside
California is permitted to have higher sul-
fur levels, which may affect the perfor-
mance of your vehicle ’s catalytic convert-
er 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
Use of a fuel which is low in quality
or use of an inappropriate fuel addi-
tive may cause engine damage.

Starting and operating 7-3
– CONTINUED –
problem is fuel related before returning
your vehicle to an authorized dealer for
service.
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 deter-
mined that the condition is caused by the
type of fuel used, repairs may not be cov-
ered by your warranty.
Gasoline for cleaner air
Your use of gasoline with detergent addi-
tives will help prevent deposits from form-
ing 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 ma-
terials called oxygenates. Use of these fu- els can also help keep the air cleaner. Ox-
ygenated blend fuels, such as MTBE (Me-
thyl Tertiary Butyl ether) or ethanol (ethyl
or grain alcohol) may be used in your ve-
hicle, 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 oper-
ators if their gasolines contain detergents
and oxygenates and if they have been re-
formulated to reduce vehicle emissions.
As additional guidance, only use fuels
suited for your vehicle as explained in the
following.
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 AND if it is accompanied by suffi-
cient quantities of the proper cosolvents
and corrosion inhibitors required to pre- vent damage to the fuel system. Do not
use fuel containing methanol
EXCEPT un-
der 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 im-
proper fuel are not covered under the
SUBARU Limited Warranty.
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.