2011 SUBARU IMPREZA WRX battery

Engine compartment overview &Non-turbo models1) Power steering fluid reservoir
(page 11-24)
2) Manual transmission oil level gauge (MT) (page 11-21) or Differential gear oil level
gauge (AT) (page 11-23)
3) Clutch fluid reservoir (page 11-26)
4) Automatic transmission fluid level gauge (AT) (page 11-22)
5) Brake fluid reservoir (page 11-25)
6) Fuse box (page 11-45)
7) Battery (page 11-44)
8) Windshield washer tank (page 11-38)
9) Engine oil filler cap (page 11-10)
10) Engine coolant reservoir (page 11-14)
11) Radiator cap (page 11-14)
12) Engine oil level gauge (page 11-10)
13) Air cleaner case (page 11-17) Maintenance and service
11-7
– CONTINUED –

11-8Maintenance and service
& Turbo models except STI
1) Power steering fluid reservoir
(page 11-24)
2) Manual transmission oil level gauge (MT) (page 11-21)
3) Clutch fluid reservoir (page 11-26)
4) Brake fluid reservoir (page 11-25)
5) Fuse box (page 11-45)
6) Battery (page 11-44)
7) Windshield washer tank (page 11-38)
8) Engine oil filler cap (page 11-10)
9) Engine coolant reservoir (page 11-14)
10) Engine oil level gauge (page 11-10)
11) Radiator cap (page 11-14)
12) Air cleaner case (page 11-17)

&STI1) Power steering fluid reservoir
(page 11-24)
2) Clutch fluid reservoir (page 11-26)
3) Brake fluid reservoir (page 11-25)
4) Fuse box (page 11-45)
5) Battery (page 11-44)
6) Windshield washer tank (page 11-38)
7) Engine oil filler cap (page 11-10)
8) Engine coolant reservoir (page 11-14)
9) Engine oil level gauge (page 11-10)
10) Radiator cap (page 11-14)
11) Air cleaner case (page 11-17) Maintenance and service
11-9

11-44Maintenance and service
Battery
WARNING
. Before beginning work on or near
any battery, be sure to extinguish
all cigarettes, matches, and light-
ers. Never expose a battery to an
open flame or electric sparks.
Batteries give off a gas which is
highly flammable and explosive.
. For safety, in case an explosion
does occur, wear eye protection
or shield your eyes when work-
ing near any battery. Never lean
over a battery.
. Do not let battery fluid contact
eyes, skin, fabrics, or paint be-
cause battery fluid is a corrosive
acid. If battery fluid gets on your
skin or in your eyes, immediately
flush the area with water thor-
oughly. Seek medical help imme-
diately if acid has entered theeyes.
If battery fluid is accidentally
swallowed, immediately drink a
large amount of milk or water,
and seek medical attention im-
mediately.
. To lessen the risk of sparks, remove rings, metal watchbands,
and other metal jewelry. Never
allow metal tools to contact the
positive battery terminal and any-
thing connected to it WHILE you
are at the same time in contact
with any other metallic portion of
the vehicle because a short cir-
cuit will result.
. Keep everyone including children
away from the battery.
. Charge the battery in a well-
ventilated area.
. Battery posts, terminals and re-
lated accessories contain lead
and lead compounds, chemicals
known to the State of California
to cause cancer and reproductive
harm. Batteries also contain
other chemicals known to the
State of California to cause can-
cer.
Wash hands after handling.
1) Cap
2) Upper level
3) Lower level
It is unnecessary to periodically check the
battery fluid level or periodically refill with
distilled water.
However, if the battery fluid level is below
the lower level, remove the cap. Fill to the
upper level with distilled water.
CAUTION
Never use more than 10 amperes
when charging the battery because
it will shorten battery life.

&Engine
Engine model EJ253
(2.5 L, SOHC, non-turbo) EJ255
(2.5 L, DOHC, turbo, except STI) EJ257
(2.5 L, DOHC, turbo, STI)
Engine type Horizontally opposed, liquid cooled 4 cylinder, 4-stroke gasoline engine
Displacement cc (cu-in) 2,457 (150)
Bore 6Stroke in (mm) 3.963.1 (99.5 679.0)
Compression ratio 10.0 : 1 8.4 : 1 8.2 : 1
Firing order 1
–3 –2–4
& Electrical system
Battery type and capacity (5HR) MT 12V-48AH (55D23L)
AT 12V-52AH (65D23L)
Alternator Non-turbo models 12V-90A
Turbo models 12V-110A
Spark plugs Non-turbo models FR5AP-11 (NGK)
Turbo models SILFR6A (NGK)
AT: Automatic transmission
MT: Manual transmission Specifications
12-3
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12-12Specifications
Fuses and circuits &Fuse panel located in the passenger compartmentFuse
panel Fuse
rating Circuit
1 Empty
2 Empty
3 15A .Door locking
4 10A .Front wiper deicer relay
5 10A .Combination meter
. Clock
6 7.5A .Remote control rear
view mirrors
. Seat heater relay
7 15A .Combination meter
. Integrated unit
8 20A .Stop light
9 15A .Front wiper deicer
10 7.5A .Power supply (battery)
11 7.5A .Turn signal unit
12 15A .Automatic transmission
unit
. Engine control unit
. Integrated unit
13 20A .Accessory power outlet
(center console)
14 15A .Position light
. Tail light
. Rear combination light
15 Empty (FWD connector for
AWD AT models)

.Passenger car tire
A tire intended for use on passen-
ger cars, multipurpose passenger
vehicles, and trucks, that have a
gross vehicle weight rating (GVWR)
of 10,000 lbs (4,535 kg) or less. . Ply
A layer of rubber-coated parallel cords.. Ply separation
A parting of rubber compound
between adjacent plies.. Pneumatic tire
A mechanical device made of rub-
ber, chemicals, fabric and steel or
other materials, that, when
mounted on an automotive wheel,
provides the traction and contains
the gas or fluid that sustains theload. . Production options weight
The combined weight of those
installed regular production options
weighing over 5.1 lbs (2.3 kg) in
excess of those standard items
which they replace, not previously
considered in curb weight or acces- sory weight, including heavy duty
brakes, ride levelers, roof rack,
heavy duty battery, and special trim.
. Radial ply tire
A pneumatic tire in which the ply
cords that extend to the beads are
laid at substantially 90 degrees to
the centerline of the tread. . Recommended inflation pres-
sure
The cold inflation pressure recom-
mended by a vehicle manufacturer. . Reinforced tire
A tire designed to operate at higher
loads and at higher inflation pres-
sures than the corresponding stan-
dard tire. . Rim
A metal support for a tire or a tire
and tube assembly upon which the
tire beads are seated. . Rim diameter
Nominal diameter of the bead seat. . Rim size designation
Rim diameter and width. .
Rim type designation
The industry of manufacturer ’s des-
ignation for a rim by style or code. . Rim width
Nominal distance between rim flanges. . Section width
The linear distance between the
exteriors of the sidewalls of an
inflated tire, excluding elevations
due to labeling, decoration, or
protective bands. . Sidewall
That portion of a tire between the
tread and bead.. Sidewall separation
The parting of the rubber com-
pound from the cord material in
the sidewall.. Test rim
The rim on which a tire is fitted for
testing, and it may be any rim listed
as appropriate for use with that tire.. Tread
That portion of a tire that comes
into contact with the road.
Consumer information and Reporting safety defects
13-7
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14-2Index
A
ABS (Anti-lock Brake System) ..................................... 7-32
Warning light ......................................................... 3-21
Accessories ....................................................... 5-4, 11-46
Accessory power outlet ................................................. 6-8
Active head restraint ..................................................... 1-5
Air cleaner element ................................................... 11-17
Air conditioner Automatic climate control system ............................. 4-11
Manual climate control system ............................. 4-4, 4-7
Air filtration system ..................................................... 4-13
Airflow selection Automatic climate control system ......................... 4-2, 4-9
Manual climate control system ............................. 4-2, 4-4
Alarm system ............................................................ 2-16
All-Wheel Drive warning light ....................................... 3-23
Aluminum wheel ....................................................... 11-38
Cleaning ............................................................... 10-3
Antenna system ........................................................... 5-3
Anti-lock Brake System (ABS) ..................................... 7-32
Arming the system ..................................................... 2-17
Armrest ....................................................................... 1-8
Ashtray ..................................................................... 6-10
AT OIL TEMP warning light ......................................... 3-18
Audio Antenna system ....................................................... 5-3
Auxiliary input jack ................................................. 5-34
Bluetooth
®audio .................................................... 5-45
CD player operation ............................................... 5-23
Control button ........................................................ 5-42
FM/AM radio operation ........................................... 5-12 iPod
®operations
.................................................... 5-37
Power and sound controls ........................................ 5-8
Satellite radio operations ......................................... 5-17
Set ........................................................................ 5-4
USB storage device operations ................................ 5-37
Auto-dimming mirror/compass .............................. 3-40, 3-41
Automatic climate control system ................................... 4-8
Automatic transmission ............................................... 7-22
Fluid ........................................................... 11-22, 12-9
MANUAL mode ...................................................... 7-26
Oil temperature warning light (AT OIL TEMP) ............. 3-18
Select lever ........................................................... 7-23
Shift lock function ................................................... 7-24
SPORT mode ........................................................ 7-28
Automatic/Emergency Locking Retractor (A/ELR) ........... 1-12
Auxiliary input jack ...................................................... 5-34
BBattery .................................................................... 11-44
Drainage prevention function ..................................... 2-5
Jump starting ......................................................... 9-11
Replacement (remote engine start transmitter) ........... 7-13
Replacement (remote keyless entry system) .............. 2-11
Bluetooth
®audio ........................................................ 5-45
Booster seat .............................................................. 1-27
Bottle holder ............................................................... 6-7
Brake
Assist .................................................................... 7-32
Booster ....................................................... 7-31, 11-27
Fluid ........................................................... 11-25, 12-9
Pad and lining ...................................................... 11-30