engine SUBARU IMPREZA 2007 3.G Owners Manual

11-42Maintenance and service
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. Fuses
CAUTION
Never replace a fuse with one hav-
ing a higher rating or with material
other than a fuse because serious
damage or a fire could result.
The fuses are designed to melt during an
overload to prevent damage to the wiring
harness and electrical equipment. The
fuses are located in two fuse boxes.
One is located under the instrument panel
behind the coin tray on the driver ’s seat
side.
To remove the coin tray, open the cover
and pull the coin tray out.
The other one is housed in the engine compartment.

The spare fuses are stored in the main
fuse box cover in the engine compart-ment.
The fuse puller is stored in the main fuse
box in the engine compartment.
1) Good
2) Blown
If any lights, accessories or other electrical
controls do not operate, inspect the
corresponding fuse. If a fuse has blown,
replace it.
1. Turn the ignition switch to the “LOCK ”
position and turn off all electrical acces- sories.
2. Remove the cover.
3. Determine which fuse may be blown.
The back side of each fuse box cover andthe “Fuses and circuits ”section in chapter
12 in this manual show the circuit for eachfuse.4. Pull out the fuse with the fuse puller.
5. Inspect the fuse. If it has blown,
replace it with a spare fuse of the samerating.
6. If the same fuse blows again, this
indicates that its system has a problem.
Contact your SUBARU dealer for repairs. Maintenance and service
11-43

Specifications..................................................... 12-2
Dimensions ........................................................ 12-2
Engine ............................................................... 12-3
Electrical system ................................................ 12-3
Capacities .......................................................... 12-4
Tires .................................................................. 12-5
Wheel alignment ................................................ 12-5 Fuses and circuits
............................................. 12-6
Fuse panel located behind the coin tray ............. 12-6
Fuse panel located in the engine compartment ................................................... 12-8
Bulb chart ........................................................... 12-9
Vehicle identification ....................................... 12-11Specifications
12

&Engine
Engine model EJ253
(2.5-liter, SOHC, non-turbo) EJ255
(2.5-liter, DOHC, turbo, WRX) EJ257
(2.5-liter, DOHC, turbo, WRX-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 (75D23L)
Alternator Non-turbo models 12V-90A
Turbo models 12V-110A
Spark plugs Non-turbo engine
FR5AP-11 (NGK)
Turbo engine ILFR6B (NGK)
AT: Automatic transmission
MT: Manual transmission Specifications
12-3
– CONTINUED –

12-4Specifications
&Capacities
Fuel tank 15.9 US gal (60 liters, 13.2 Imp gal)
Engine oil 4.2 US qt (4.0 liters, 3.5 Imp qt)
Transmission oil (MT) 5-speed 3.7 US qt (3.5 liters, 3.1 Imp qt)
6-speed 4.3 US qt (4.1 liters, 3.6 Imp qt)
Front differential gear oil (AT) 1.3 US qt (1.2 liters, 1.1 Imp qt)
Rear differential gear oil WRX-STI 1.1 US qt (1.0 liters, 0.9 Imp qt)
Others 0.8 US qt (0.8 liters, 0.7 Imp qt)
Transmission fluid (AT) 10.0 US qt (9.5 liters, 8.4 Imp qt)
Power steering fluid 0.7 US qt (0.7 liter, 0.6 Imp qt)
Engine coolant Non-turbo engine MT7.4 US qt (7.0 liters, 6.2 Imp qt)
AT 7.3 US qt (6.9 liters, 6.1 Imp qt)
Turbo engine MT 8.1 US qt (7.7 liters, 6.8 Imp qt)
AT 8.0 US qt (7.6 liters, 6.7 Imp qt)
AT: Automatic transmission
MT: Manual transmission

12-6Specifications
Fuses and circuits &Fuse panel located behind the coin trayFuse
panel Fuse
rating Circuit
1 15A .Heater fan
2 15A .Heater fan
3 15A .Power door lock
. Remote keyless entry
4 20A .Power outlet (front)
. Remote controlled rear
view mirrors
5 10A .Tail light
. Parking light
6 15A .SRS airbag
7 15A .Fog light
8 20A .ABS solenoid
9 15A .Radio
10 Empty
11 15A .Engine ignition system
. SRS airbag
. AT control system
12 10A .Illumination brightness
control

12-8Specifications
&Fuse panel located in the engine compartment
A) FWD socket (AT models except Turbo)
B) Main fuse
C) Engine sensor (Non-turbo models) Fuse
panel Fuse
rating Circuit
1 20A .Radiator cooling fan
(Main)
2 20A .Radiator cooling fan
(Sub)
3 30A .ABS motor
4 20A .Rear window defogger
5 15A .Hazard warning flasher
. Horn
6 15A .Turn signal lights
7 10A .Automatic transmission
control unit
8 10A .Alternator
9 15A .Headlight (right side)
10 15A .Headlight (left side)
11 20A .Lighting switch
12 20A .Clock
. Interior light
13 10A .Secondary air combina-
tion valve (Turbo models only)

CenterConsole .................................................................. 6-4
Ventilators ............................................................... 4-3
Center and side ventilators ............................................ 4-3
Changing Flat tire ................................................................... 9-4
Oil and oil filter ...................................................... 11-9
Charge warning light .................................................. 3-16
CHECK ENGINE warning light/Malfunction indicator lamp ...................................................................... 3-16
Checking Brake pedal free play ............................................ 11-27
Brake pedal reserve distance ................................. 11-28
Clutch function ...................................................... 11-28
Clutch pedal free play ............................................ 11-28
Engine oil level ...................................................... 11-8
Fluid level ............................... 11-20, 11-24, 11-25, 11-26
Gear oil level ........................................................ 11-22
Child restraint systems ............................................... 1-22
Installation with A/ELR seatbelt ................................ 1-25
Lower and tether anchorages .................................. 1-29
Child safety .................................................................... 5
Locks ................................................................... 2-18
Chime Key ........................................................................ 3-5 Seatbelt ........................................................ 1-11, 3-14
Cleaning
Aluminum wheels ................................................... 10-3
Interior .................................................................. 10-5
Ventilation grille ..................................................... 4-11 Climate control system
Automatic ............................................................... 4-8
Manual ................................................................... 4-3
Clock ........................................................................ 3-22
Clutch Fluid ................................................................... 11-26
Pedal .................................................................. 11-28
Coat hook. .................................................................. 6-9
Coin tray .................................................................... 6-4
Cooling system ........................................................ 11-12
Corrosion protection ............................................ 8-10, 10-4
Cruise control ............................................................ 7-26
Set indicator light .................................................... 3-20
Cruise control indicator light ......................................... 3-20
Cup holder ................................................................. 6-5
Front passenger ’s.................................................... 6-5
Rear passenger ’s .................................................... 6-6
D
Daytime running light system ....................................... 3-23
Differential gear oil
Front ................................................................... 11-21
Rear ................................................................... 11-22
Dimensions ................................................................ 12-2
Disarming the system ................................................. 2-15
Disc brake pad wear warning indicators ........................ 7-21
Dome light .................................................................. 6-2
Door
Locks ..................................................................... 2-4
Open warning light. ................................................. 3-19
Drive belts ............................................................... 11-18 Index
14-3

14-4Index
Driver ’s Control Center Differential ............................... 7-12
Auto indicator light ................................................. 3-20
Indicator light ......................................................... 3-21
Driving All-Wheel Drive vehicle ........................................... 3-19
Car phone/cell phone .................................................. 7
Drinking ..................................................................... 6
Drugs ........................................................................ 6
Foreign countries ..................................................... 8-4
Pets .......................................................................... 7
Snowy and icy roads ................................................ 8-9
Tips........................................................ 7-10, 7-12, 8-5
Tired or sleepy. ........................................................... 7
E
Electrical system ........................................................ 12-3
Electronic Brake Force Distribution (EBD) system ........................................................... 3-18, 7-23
Emergency Locking Retractor (ELR) ............................. 1-11
Engine Compartment overview ........................................... 11-6
Coolant ................................................................ 11-13
Exhaust gas (Carbon monoxide) ............................ 6, 8-2
Hood .................................................................... 11-4
Oil........................................................................ 11-8Overheating .......................................................... 9-11
Starting ................................................................... 7-7
Stopping ................................................................. 7-8
Exterior care .............................................................. 10-2 F
Flat tires
..................................................................... 9-4
Floor mat .................................................................... 6-9
Fluid level Automatic transmission ......................................... 11-20
Brake .................................................................. 11-25
Clutch ................................................................. 11-26
Power steering ..................................................... 11-24
Front
Differential gear oil ................................................ 11-21
Fog light .............................................................. 11-49
Seatbelt pretensioners ............................................ 1-19
Seats ..................................................................... 1-2
Turn signal light .................................................... 11-49
Fuel ........................................................................... 7-2
Economy hints ........................................................ 8-2
Filler lid and cap ...................................................... 7-4
Gauge ............................................................ 3-8, 3-12
Requirements ......................................................... 7-2
Fuses ..................................................................... 11-42
Fuses and circuits ...................................................... 12-6
G
GAWR (Gross Axle Weight Rating) ............................... 8-14
Glove box ................................................................... 6-4
GVWR (Gross Vehicle Weight Rating) ... ........................ 8-14
H
Hazard warning flasher .......................................... 3-6, 9-2
Head restraint adjustment ............................................. 1-4
Rear ...................................................................... 1-7

14-6Index
M
Main fuse ................................................................. 11-44
Maintenance
Precautions ........................................................... 11-3
Schedule .............................................................. 11-3
Seatbelt ................................................................ 1-18
Tools .................................................................... 9-16
Manual Climate control system ............................................. 4-3
Transmission oil .................................................... 11-19
Transmission-5 speeds ........................................... 7-11
Transmission-6 speeds ............................................. 7-9
Map light ..................................................................... 6-2
Maximum load limits ................................................... 8-20
Meters and gauges .............................................. 3-6, 3-11
Mirrors ...................................................................... 3-32
Moonroof .................................................................. 2-24
N
New vehicle break-in driving .......................................... 8-2
O
Odometer/Tripmeter ............................................. 3-7, 3-11
Off road driving ............................................................ 8-6
Oil filter ..................................................................... 11-9
Oil level
Engine .................................................................. 11-8
Front differential gear (AT vehicles) ......................... 11-21
Manual transmission .............................................. 11-19
Rear differential .................................................... 11-22
Oil pressure warning light ............................................ 3-16 Outside mirrors
.......................................................... 3-33
Outside temperature indicator ............................... 3-9, 3-13
Overheating engine .................................................... 9-11
P Parking Brake .................................................................... 7-24
Brake stroke ........................................................ 11-30
Light switch ........................................................... 3-25
Tips ...................................................................... 7-25
Parking your vehicle ................................................... 7-24
Periodic inspections ..................................................... 8-4
Power
Door locking switch .................................................. 2-6
Steering ................................................................ 7-20
Steering fluid ........................................................ 11-24
Windows ............................................................... 2-18
Precautions against vehicle modification ................ 1-22, 1-57
Preparing to drive ........................................................ 7-6
Printed antenna ........................................................... 5-2
R Rear Combination lights ................................................ 11-49
Gate ............................................................. 2-23, 9-14
Seats ..................................................................... 1-6
Viscous limited slip differential .................................. 7-20
Rear differential Gear oil ............................................................... 11-22
Oil temperature warning light ................................... 3-17