automatic transmission SUBARU IMPREZA 2005 2.G Owner's Manual

9-21
In case of emergency
– CONTINUED –
„Towing with all wheels on the ground
1. Check the transmission and differential oil levels
and add oil to bring it to the upper level if necessary.
2. Release the parking brake and put the transmis-
sion in neutral.
3. The ignition switch should be in the “ACC” position
while the vehicle is being towed.
4. Take up slack in the towline slowly to prevent dam-
age to the vehicle.
y Never turn the ignition switch to the “LOCK”
position while the vehicle is being towed be- cause the steering wheel and the direction of
the wheels will be locked.y
Remember that the brake booster and power
steering do not function when the engine is not
running. Because the engine is turned off, it will
take greater effort to operate the brake pedal
and steering wheel.
y If transmission failure occurs, transport your
vehicle on a flat-bed track. y Do not run the engine while being towed us-
ing this method. Transmission damage could
result if the vehicle is towed with the engine
running. y For vehicles with automatic transmission,
the traveling speed must be limited to less than
20 mph (30 km/h) and the traveling distance to
less than 31 miles (50 km). For greater speeds
and distances, transport your vehicle on a flat-
bed track.
HG9024AA

11 - 1
11
Maintenance and service
Maintenance schedule ................................. 11-3
Maintenance precautions ............................ 11-3 Before checking or servicing in the engine compartment .................................................. 11-4
When you do checking or servicing in the engine compartment while the engine is
running ............................................................ 11-5
Engine hood .................................................. 11-5
Engine compartment overview ................... 11-8 2.5-liter non-turbo models ................................ 11-8
2.0-liter turbo models ....................................... 11-9
2.5-liter turbo models ....................................... 11-10
Engine oil ...................................................... 11-11 Checking the oil level ....................................... 11-11
Changing the oil and oil filter .......................... 11-12
Recommended grade and viscosity ................ 11-16
Recommended grade and viscosity under severe driving conditions .............................. 11-18
Synthetic oil ....................................................... 11-18
Cooling system ............................................. 11-18 Cooling fan, hose and connections ................ 11-19
Engine coolant .................................................. 11-19
Air cleaner element ...................................... 11-24 Replacing the air cleaner element ................... 11-24
Spark plugs ................................................... 11-28 Recommended spark plugs ............................. 11-28
Drive belts ..................................................... 11-29
Manual transmission oil ............................... 11-30 Checking the oil level ....................................... 11-30
Recommended grade and viscosity ................ 11-31 Automatic transmission fluid ...................... 11-32
Checking the fluid level .................................... 11-32
Recommended fluid ......................................... 11-34
Front differential gear oil (AT vehicles) ...... 11-35 Checking the oil level ....................................... 11-35
Recommended grade and viscosity ............... 11-35
Rear differential gear oil ............................... 11-36 Checking the gear oil level .............................. 11-36
Recommended grade and viscosity ............... 11-37
Power steering fluid ...................................... 11-38 Checking the fluid level .................................... 11-38
Recommended fluid ......................................... 11-39
Brake fluid ..................................................... 11-40 Checking the fluid level .................................... 11-40
Recommended brake fluid ............................... 11-40
Clutch fluid (MT vehicles) ............................ 11-41 Checking the fluid level .................................... 11-41
Recommended clutch fluid .............................. 11-42
Brake booster ................................................ 11-42
Brake pedal .................................................... 11-43 Checking the brake pedal free play ................ 11-43
Checking the brake pedal reserve distance ... 11-43
Clutch pedal (MT vehicles) ........................... 11-44 Checking the clutch function .......................... 11-44
Checking the clutch pedal free play ............... 11-44
Replacement of brake pad and lining ......... 11-45 Breaking-in of new brake pads and linings .... 11-45
Parking brake stroke .................................... 11-46
Tires and wheels ........................................... 11-47

11 - 8
Maintenance and service
Engine compartment overview „
2.5-liter non-turbo models
13 12 11 10 9 8 23
5
46
17USB102BB
1) Air cleaner element (page 11-
24)
2) Manual transmission oil level gauge (MT) (page 11-30) or Dif-
ferential gear oil level gauge
(AT) (page 11-35)
3) Clutch fluid reservoir (page 11-
41)
4) Automatic transmission fluid lev- el gauge (page 11-32)
5) Brake fluid reservoir (page 11- 40)
6) Windshield washer tank (page
11-56)
7) Fuse box (page 11-65)
8) Battery (page 11-63)
9) Engine coolant reservoir (page 11-19)
10) Engine oil filler cap (page 11-11)
11) Engine oil level gauge (page 11- 11)
12) Radiator cap (page 11-19)
13) Power steering fluid reservoir (page 11-38)

11 - 9
Maintenance and service
– CONTINUED –
„2.0-liter turbo models
34 5 6 7
1
2
13 12 11 10 9 8
UGB138BB
1) Manual transmission oil level gauge (MT) (page 11-30) or Dif-
ferential gear oil level gauge
(AT) (page 11-35)
2) Air cleaner element (page 11- 24)
3) Clutch fluid reservoir (page 11-
41)
4) Automatic transmission fluid lev- el gauge (page 11-32)
5) Brake fluid reservoir (page 11- 40)
6) Windshield washer tank (page
11-56)
7) Fuse box (page 11-65)
8) Battery (page 11-63)
9) Engine oil filler cap (page 11-11)
10) Engine coolant reservoir (page 11-19)
11) Engine oil level gauge (page 11- 11)
12) Radiator cap (page 11-19)
13) Power steering fluid reservoir (page 11-38)

11 - 3 2
Maintenance and service
SAE viscosity No. and applicable temperature
Automatic transmission fluid „
Checking the fluid level
The automatic transmission fluid expands largely as
its temperature rises; the fluid level differs according to
fluid temperature. Therefore, there are two different
scales for checking the level of hot fluid and cold fluid
on the dipstick.
Though the fluid level can be checked without warm-
ing up the fluid on the “COLD” range, we recommend
checking the fluid level when the fluid is at operating
temperature. T Checking the fluid level when the fluid is hot
1. Drive the vehicle several miles to raise the temper-
ature of the transmission fluid up to normal operating
temperature; 158 to 176 °F (70 to 80 °C) is normal.
2. Park the vehicle on a level surface and set the park-
ing brake.
3. First shift the selector lever in each position. Then
shift it in the “P” position, and run the engine at idling
speed.-30 -20 -10 0 10 20 30 40
-20 0 60 20
80W
75W/90 80 100
40
85W 90
HSB036BA

11 - 3 4
Maintenance and service
A) HOT range
B) COLD range
1) Upper level
2) Lower level
4. Pull out the dipstick and check the fluid level on the
gauge. If it is below the lower level on the “HOT”
range, add the recommended automatic transmission
fluid up to the upper level. T Checking the fluid level when the fluid is cold
When the fluid level has to be checked without time to
warm up the automatic transmission, check to see that
the fluid level is between the lower level and upper lev-
el on the “COLD” range. If it is below that range, add fluid up to the upper level. Be careful not to overfill. „
Recommended fluid
“Dexron III” Type Automatic Transmission FluidLF
LF
1 2
12
B A
HGB061BB

11 -3 9
Maintenance and service
– CONTINUED –
1) Specified range
2. Check the fluid level of the reservoir tank.
When the fluid is hot after the vehicle has been run:
Check that the oil level is between “HOT MIN” and
“HOT MAX” on the surface of the reservoir tank.
When the fluid is cool before the vehicle is run: Check
that the oil level is between “COLD MIN” and “COLD
MAX” on the surface of the reservoir tank.
3. If the fluid level is lower than the applicable “MIN”
line, add the recommended fluid as necessary to bring
the level between the “MIN” and “MAX” line.
If the fluid level is extreme low, it may indicate possible
leakage. Consult your SUBARU dealer for an inspec- tion.
Be careful not to burn yourself because the flu-id may be hot.
y
When power steering fluid is being added,
use only clean fluid, and be careful not to allow
any dirt into the tank. And never use different
brands together.
y Avoid spilling fluid when adding it in the tank.
„ Recommended fluid
“Dexron III” Type Automatic Transmission Fluid
1
1
HSB045BB

12-2
Specifications
SpecificationsSpecifications
These specifications are subject to change without notice. „
Dimensions
in (mm)
*1: Measured with vehicle empty
AT: Automatic transmission
MT: Manual transmission
ItemSedanWagon
2.5-liter
non-turbo2.0-liter turbo2.5-liter turbo2.5-liter non-turbo2.0-liter turbo
RS, RS sport packageWRXWRX-STiRSOUTBACK SPORTWRX
Drive systemAWD
Transmission typeATMTATMTMTATMTATMTATMT
Overall length173.8 (4,415)
Overall widthSedan68.5 (1,740)–
Wagon–66.7 (1,695)67.3 (1,710)66.7 (1,695)
Overall heightWithout
roofrail56.7 (1,440)56.3
(1,430)57.7 (1,465)58.1 (1,475)57.7 (1,465)
With roofrail–58.5 (1,485)58.9 (1,495)58.5 (1,485)
Wheel base99.4 (2,525)100
(2,540)99.4 (2,525)
TreadFront58.5 (1,485)58.7
(1,490)57.7 (1,465)57.5 (1,460)57.7 (1,465)
Rear58.1 (1,475)58.3 (1,480)58.9
(1,495)57.3 (1,455)
Ground clearance *15.9 (150)6.1 (155)5.7 (145)5.9 (150)6.3 (160)6.1 (155)

12-3
Specifications
– CONTINUED –
„Engine
„ Electrical system
AT: Automatic transmission
MT: Manual transmission
Engine modelEJ253
(2.5-liter, SOHC, non-turbo)EJ205 (2.0-liter, DOHC, turbo)EJ257 (2.5-liter, DOHC, turbo)
Engine typeHorizontally opposed, liquid cooled 4 cylinder, 4-stroke gasoline engine
Displacement cc (cu-in)2,457 (150)1,994 (122)2,457 (150)
Bore × Stroke in (mm)3.9 × 3.1 (99.5 × 79.0)3.6 × 2.9 (92.0 × 75.0)3.9 × 3.1 (99.5 × 79.0)
Compression ratio10.0 : 18.0 : 18.2 : 1
Firing order1 – 3 – 2 – 4
Battery type and
capacity (5HR)MT12V-48AH (55D23L)
ATWith 2.5-liter non-turbo engine12V-52AH (75D23L)
With 2.0-liter turbo engine12V-52AH (65D23L)
Alternator2.5-liter non-turbo and
2.0-liter turbo engine12V-75A
2.5-liter turbo engine12V-90A
Spark plugs2.5-liter non-turbo engineFR5AP-11
2.0-liter turbo enginePFR6G (NGK)
2.5-liter turbo engineIFLR6B (NGK)

12-4
Specifications „
Capacities
AT: Automatic transmission
MT: Manual transmission
Fuel tank15.9 US gal (60 liters, 13.2 Imp gal)
Engine oil4.2 US qt (4.0 liters, 3.5 Imp qt)
Transmission oil (MT)5 speed3.7 US qt (3.5 liters, 3.1 Imp qt)
6 speed4.3 US qt (4.1 liters, 3.6 Imp qt)
Transmission oil (AT)10.0 US qt (9.5 liters, 8.4 Imp qt)
Power steering gear fluid0.7 US qt (0.7 liter, 0.6 Imp qt)
Engine coolant2.5-liter non-turbo engineMT7.4 US qt (7.0 liters, 6.2 Imp qt)
AT7.3 US qt (6.9 liters, 6.1 Imp qt)
2.0-liter turbo engineMT8.1 US qt (7.7 liters, 6.8 Imp qt)
AT8.0 US qt (7.6 liters, 6.7 Imp qt)
2.5-liter turbo engineMT8.1 US qt (7.7 liters, 6.8 Imp qt)