2006 SUBARU IMPREZA cooling

11-4 Maintenance and service
Before checking or servicing
in the engine compartment
When you do checking or ser-
vicing in the engine compart-
ment while the engine is run-
ning
Engine hood
0
To open the hood:
1. If the wiper blades are lifted off the
windshield, return them to their original
positions.
2. Pull the hood release knob under the
instrument panel.
Wear adequate eye protection to
guard against getting oil or fluids
in your eyes. If something does
get in your eyes, thoroughly wash
them out with clean water.
Do not tamper with the wiring of
the SRS airbag system or seatbelt
pretensioner system, or attempt
to take its connectors apart, as
that may activate the system or it
can render it inoperative. The wir-
ing and connectors of these sys-
tems are yellow for easy identifi-
cation. NEVER use a circuit tester
for these wiring.
If your SRS airbag or seatbelt pre-
tensioner needs service, consult
your nearest SUBARU dealer.
Always stop the engine and set
the parking brake firmly to pre-
vent the vehicle from moving.
Always let the engine cool down.
Engine parts become very hot
when the engine is running and
remain hot for some time after the
engine is stopped.
Do not spill engine oil, engine
coolant, brake fluid or any other
fluid on hot engine components.
This may cause a fire.
Always remove the key from the
ignition switch. When the ignition
switch is in the “ON ” position, the
cooling fan may operate suddenly
even when the engine is stopped.
A running engine can be dangerous.
Keep your fingers, hands, clothing,
hair and tools away from the cooling
fan, belts and any other moving en-
gine parts. Removing rings, watch-
es and ties is advisable.
B00002

11-12 Maintenance and service
Cooling system
Cooling fan, hose and con-
nections
Your vehicle employs an electric cooling
fan which is thermostatically controlled to
operate when the engine coolant reaches
a specific temperature.
If the radiator cooling fan does not operate
even when the engine coolant tempera-
ture gauge exceeds the normal operating
range, the cooling fan circuit may be de-
fective. Check the fuse and replace it if
necessary. If the fuse is not blown, have
the cooling system checked by your
SUBARU dealer.
If frequent addition of coolant is neces-
sary, there may be a leak in the engine
cooling system. It is recommended that
the cooling system and connections be
checked for leaks, damage, or looseness.
Engine coolant
Checking the coolant level
1)“FULL ” level mark
2) “LOW ” level mark
Check the coolant level at each fuel stop.
1. Check the coolant level on the outside
of the reservoir while the engine is cool.
2. If the level is close to or lower than the “ LOW ” level mark, add coolant up to the
“ FULL ” level mark. If the reserve tank is
empty, remove the radiator cap and refill
as required.
Never attempt to remove the radia-
tor cap until the engine has been
shut off and has cooled down com-
pletely. Since the coolant is under
pressure, you may suffer serious
burns from a spray of boiling hot
coolant when the cap is removed.
The cooling system has been
filled at the factory with a high
quality, corrosion-inhibiting, year-
around coolant which provides
protection against freezing down
to –33 F ( –36 C). For adding, use
genuine SUBARU coolant or an
equivalent: a mixture of 50% soft
water and 50% ethylene-glycol ba-
sis coolant. Use of improper cool-
ants may result in corrosion in the
cooling system. It is important to
maintain protection against freez-
ing and corrosion, even if freezing
temperatures are not expected.
Never mix different kinds of cool-
ant.
Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
F U L L
L OW1 2
B00468

Maintenance and service 11-13
– CONTINUED –
3. After refilling the reserve tank and the
radiator, reinstall the caps and check that
the rubber gaskets inside the radiator cap
are in the proper position.
Changing the coolant
Always add genuine Subaru cooling sys-
tem conditioner whenever the coolant is
replaced.
Change the engine coolant and add gen-
uine Subaru cooling system conditioner
using the following procedures according
to the maintenance schedule.
1. Remove the under cover.
2. Place a proper container under the
drain plug and loosen the drain plug.
3. Loosen the radiator cap to drain the
coolant from the radiator. Then drain the
coolant from the reserve tank. Tighten the
drain plug securely.
NOTE (Turbo model only)
The cap (without tabs) on top of the ra-
diator does not need to be removed. To add coolant, remove the cap (with tabs)
on the coolant tank on top of the en-
gine.
4. Install the under cover.
Non-turbo models
1) Filler neck
2) Fill up to this level
Be careful not to spill engine cool-
ant when adding it. If coolant
touches the exhaust pipe, it may
cause a bad smell, smoke, and/or
a fire. If engine coolant gets on the
exhaust pipe, be sure to wipe it
off.
Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
B00018
B00019
Never attempt to remove the radia-
tor cap until the engine has been
shut off and has cooled down com-
pletely. Since the coolant is under
pressure, you may suffer serious
burns from a spray of boiling hot
coolant when the cap is removed.
1
2
B00453

11-14 Maintenance and service
Turbo models
1) Filler neck
2) Fill up to this level
5. Slowly pour the coolant and fill up to
just below the filler neck, allowing enough
room to add genuine Subaru cooling sys-
tem conditioner in the radiator. Add genu-
ine Subaru cooling system conditioner un-
til the coolant level reaches the filler neck.
Do not pour the coolant too quickly, as this
may lead to insufficient air bleeding and
trapped air in the system.
Guideline of coolant quantity (including cool-
ant in reservoir tank):
Non-turbo models: MT. 7.4 US qt (7.0 liters, 6.2 Imp qt)
AT. 7.3 US qt (6.9 liters, 6.1 Imp qt)
Turbo models: MT. 8.1 US qt (7.7 liters, 6.8 Imp qt)
AT. 8.0 US qt (7.6 liters, 6.7 Imp qt)
1) “FULL ” level mark
2) “LOW ” level mark
6. Pour the coolant and fill to the reservoir
tank ’s “FULL ” level mark.
1) Rubber gaskets
7. Put the radiator cap back on and tight-
1
2
B00454
F U L L
L OW1 2
B00468
Be careful not to spill engine cool-
ant when adding it. If coolant
touches the exhaust pipe, it may
cause a bad smell, smoke, and/or
a fire. If engine coolant gets on the
exhaust pipe, be sure to wipe it
off.
Do not splash the engine coolant
over painted parts. The alcohol
contained in the engine coolant
may damage the paint surface.
B00018

12-8 Specifications
Fuse panel located in the engine compartment
A) FWD socket (AT models except Turbo)
B) Main fuse
C) Engine sensor (Non-turbo models)
1 3
A
B
9
6
5
7
C
312
4 8
1 0 11 1 2
C00107
Fuse panelFuse ratingCircuit
120ARadiator cooling fan (Main)
220ARadiator cooling fan (Sub)
330AABS motor
420ARear window defogger
515AHazard warning flasher
Horn
615ATurn signal lights
710AAutomatic transmission control unit
810AAlternator
915AHeadlight (right side)
1015AHeadlight (left side)
1120ALighting switch
1220AClock
Interior light
1310ASecondary air combination valve
(Turbo models only)

Index 14-3
Oil and oil filter ................................ ............................. 11-8
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 ........................... ......... 11-27
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 ..................................... ... 11-18, 11-21, 11-22
Child restraint systems ............................... ...................... 1-23
Installation with A/ELR seatbelt ................... ................ 1-26
Lower and tether anchorages ........................ .............. 1-30
Child safety ........................................ .................................... 5
Locks ................................................ ........................... 2-18
Chime Key ................................................ ................................ 3-5
Seatbelt .......................................... .................... 1-11, 3-14
Cigarette lighter socket ............................ ........................... 6-6
Cleaning Aluminum wheels .................................... .................... 10-3
Interior .......................................... ............................... 10-5
Ventilator grille ................................. ............................ 4-11
Climate control system Automatic ......................................... .............................. 4-7
Manual ............................................ ............................... 4-3
Clock ............................................... ................................. 3-22
Clutch fluid ....................................... ............................... 11-26
Clutch pedal ....................................... ............................ 11-28
Coat hook .......................................... ................................. 6-9Coin tray ..........................................
................................... 6-4
Cooling system ....................................... ........................ 11-12
Corrosion protection ................................ ................ 8-10, 10-4
Cruise control ...................................... .............................. 7-27
Indicator light .................................... ............................ 3-20
Set indicator light ................................ ......................... 3-20
Cup holder ........................................ .................................. 6-5
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 ................ ........... 7-22
Dome light ........................................ ........................ 6-2, 11-50
Door locks ......................................... .................................. 2-4
Door open warning light ........................... ......................... 3-19
Drive belts ........................................ ............................... 11-18
Driver ’s control center differential ....................... .............. 7-12
Drivers control center differential Auto indicator light ............................... ........................ 3-20
Indicator lights .................................... .......................... 3-21
Driving Car phone/cell phone ............................... ......................... 7
Drinking ........................................... .................................. 6
Drugs .............................................. .................................. 7
Foreign countries ................................... ........................ 8-4
Pets ............................................... .................................... 7
Snowy and icy roads ................................... ................... 8-9
Tips ............................................... .............. 7-10, 7-12, 8-5