2003 HONDA CIVIC HATCHBACK coolant

Remove the radiator cap by
pushing down and turning
counterclockwise.
Turn the radiator cap counter-
clockwise, without pressing down
on it, until it stops. This relieves
any pressure remaining in the
cooling system.
Make sure the engine and radiator
are cool.
The coolant level should be up to
the base of the f iller neck. Add
coolant if it is low.Do not add any rust inhibitors or
other additives to your car’s cooling
system. They may not be compatible
with the coolant or engine compo-
nents.
Pour coolant into the reserve tank.
Fill it to half way between the MAX
and MIN marks. Put the cap back
on the reserve tank.
Pourthecoolantslowlyand
caref ully so you do not spill. Clean
up any spills immediately. Spilled
coolant could damage components
in the engine compartment.
Put the radiator cap back on.
Tighten it f ully.
2. 3. 4. 5.6.
1. Maint enance
Cooling Syst em
172RADIATOR CAP
RESERVE TANK

Remove the radiator cap.
Turn the ignition ON (II). Turn
the temperature control dial to
maximum heat. Turn of f the
ignition. Open the hood. Make
sure the engine and radiator are
cool to the touch.
Thecoolingsystemshouldbe
completely drained and ref illed with
new coolant according to the time
and distance recommendations in
the maintenance schedule. Only use
Honda All Season Antif reeze/
Coolant Type 2.
Bef ore draining the coolant,
remove the cover under the
radiator.
Use a Phillips-head screwdriver to
remove the two bolts, and remove
the nine holding clips f rom the
cover (5 clips on the bottom and 4
clips on the side) with a f lat-tipped
screwdriver. Then pull the cover
away.
Draining the coolant requires access
to the underside of the vehicle.
Unless you have the tools and
knowledge, you should have this
maintenance done by a skilled
mechanic. 1.
3.
2.
CONT INUED
Replacing Engine Coolant
Cooling Syst em
Maint enance 173

Loosen the drain plug on the
bottom of the radiator. Drain the
coolant into an appropriate
container.Disengage the holding clip at the
bottom of the reserve tank.
Remove the drain cap and install a
rubber hose. Drain the coolant
into an appropriate container.
When the coolant stops draining,
tightenthedrainplugatthe
bottom of the radiator.
Remove the rubber hose and
reinstall the drain cap securely.Tighten the drain cap with the
holding clip securely.
Put the cover back in place and
tighten the bolts securely.
Reinstall the nine holding-clips and
lock each clip in place by pushing
on its center.
6. 7.
4.
5.8.
9.
Maint enance
Cooling Syst em
174 DRAIN PLUG
DRAIN CAP
HOLDING CLIP

If necessary, f ill the reserve tank
to the MAX mark. Install the
reserve tank cap.
Install the radiator cap, and
tighten it fully.
Start the engine and hold it at
1,500 rpm until the radiator f an
comes on. Turn of f the engine.
Check the coolant level in the
radiator and add coolant if needed.
Remove the radiator cap. Fill the
radiator with coolant up to the
base of the f iller neck.
Start the engine and let it run until
the radiator fan comes on two
times. Then stop the engine.
Pour Honda All Season
Antif reeze/Coolant Type 2 into
the radiator up to the base of the
f iller neck. This coolant is a
mixture of 50 percent antif reeze
and 50 percent water. Pre-mixing
is not required.
The cooling system capacity is: Install the radiator cap, and
tighten it to the first stop.
Fill the reserve tank to the MAX
mark. Install the reserve tank cap.
Check the level in the radiator,
add coolant if needed.
Start the engine and let it run f or
about 30 seconds. Then turn of f
the engine.
10. 19.
18.
17.
16.
15.
11. 12. 13.14.
Cooling Syst em
Maint enance 175
RESERVE TANK
Fill up to here
1.32 US gal (5.0
)

If you see steam and/or spray
coming f rom under the hood, turn
of f the engine.
If you do not see steam or spray,
leave the engine running and
watch the temperature gauge. If
the high heat is due to overloading
(climbing a long, steep hill on a
hot day with the A/C running, f or
example), the engine should start
to cool down almost immediately.
If it does, wait until the tempera-
ture gauge comes down to the mid-
point then continue driving.
Saf ely pull to the side of the road.
Put the transmission in Neutral or
Park, and set the parking brake.
Turn of f the heating and cooling
system and all other accessories.
Turn on the hazard warning
indicators.
The pointer of your car’s tempera-
ture gauge should stay in the mid-
range under most conditions. It may
go higher if you are driving up a long
steep hill on a very hot day. If it
climbs to the red mark, you should
determine the reason. Your car can overheat f or several
reasons, such as lack of coolant or a
mechanical problem. The only
indication may be the temperature
gauge climbing to or above the red
mark. Or you may see steam or
spray coming f rom under the hood.
In either case, you should take
immediate action.1. 2. 3.
If Your Engine Overheats
T aking Care of t he Unexpect ed
232 Steam and spray from an
overheated engine can
seriously scald you.
Do not open the hood if steam
is coming out.
Driving with the temperature gauge
pointer at the red mark can cause
serious damage to your engine.

If the temperature gauge stays at
the red mark, turn of f the engine.
Wait until you see no more signs
of steam or spray, then open thehood.
If you don’t f ind an obvious leak,
check the coolant level in the
radiator reserve tank (see page). If the level is below the
MIN mark, add coolant to halfway
between the MIN and MAX marks. If the temperature stays normal,
check the coolant level in the
radiator reserve tank. If it has
gone down, add coolant to the
MAX mark. Put the cap back on
tightly.
If there was no coolant in the
reserve tank, you may also have to
add coolant to the radiator. Let the
engine cool down until the pointer reaches the middle of the tempera-
ture gauge, or lower, bef ore check-
ing the radiator.
Using gloves or a large heavy
cloth, turn the radiator cap
counterclockwise, without pushing
down, to the f irst stop. This
releases any remaining pressure in
the cooling system. After the
pressure releases, push down on
the cap and turn it until it comes
off.
Start the engine and set the
temperature control dial to
maximum. Add coolant to the
radiator up to the base of the f iller
neck. If you do not have the
proper coolant mixture available,
you can add plain water.
Remember to have the cooling
system drained and ref illed with
the proper mixture as soon as you
can.
Look f or any obvious coolant leaks,
such as a split radiator hose.
Everything is still extremely hot,
so use caution. If you f ind a leak, it
must be repaired bef ore you
continue driving (see
on page ). Put the radiator cap back on
tightly. Run the engine and watch
the temperature gauge. If it goes
back to the red mark, the engine
needs repair. (See
on page .)
4. 5.
6. 7. 8. 9.10.
11.
12.
133 245
245
Emergency
Towing
Emergency
Towing
If Your Engine Overheats
T aking Care of t he Unexpect ed 233
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.

ÎÎ Î
Î Î Î
Specif ications
T echnical Inf ormation
250 Dimensions
Weights
Engine
Capacities
67.1 in (1,705 mm)
54.1 in (1,375 mm)
101.2 in (2,570 mm)
57.8 in (1,468 mm)
57.8 in (1,468 mm)
3.39 x 3.39 in (86.0 x 86.0 mm) 121.9 cu-in (1,998 cm
)
9.8 : 1 13.2 US gal (50
)
1.32 US gal (5.0
)
164.2 in (4,170 mm)
Length
Width
Height
Wheelbase
Track
Gross vehicle weight ratingType
BorexStroke
Displacement
Compression ratio
Spark plugs See the certification label attached
to the driver’s doorjamb. Fuel tank
Engine
coolant
Engine oil Manual
transmission
fluid
Windshield
washer reservoir1.77 US gal (6.7
)
4.4 US qt (4.2
)
4.2 US qt (4.0)
5.6 US qt (5.3)
1.6 US qt (1.5)
1.8 US qt (1.7)
2.6 US qt (2.5
)
0.13 US gal (0.5
)
Including the coolant in the reserve tank and that remaining in the
engine.
Reserve tank capacity:
Water cooled 4-stroke DOHC
i-VTEC 4-cylinder gasoline engine 5.8 US qt (5.5
)
See spark plug maintenance
section page 183 .
FrontRear
Approx.
Change Manual
Total Manual
Change
Without filter
Total
ChangeTotal
1: 2: 3: On the U.S. model
On Canadian model 1
23
Including filter

CONT INUED
BatteryCharging System ...........................
Indicator . 58, 235
............................
Jump Starting . 230
..............................
Maintenance . 184
............................
Specif ications . 251
..............................
Bef ore Driving . 127
....................................
Belts,Seat .8,43
...........................
Beverage Holders . 90
.................................
Body Repairs . 220
Brakes
.............
Break-in, New Linings . 128
...........................................
Fluid . 177
.....................
Light, Burned-out . 207
.........................................
Parking . 89
.................
System Indicator . 59, 238
........................
Wear Indicators . 147
.............................
Braking System . 147
........................
Break-in, New Car . 128
..
Brightness Control, Instruments . 67
........................
Brights, Headlights . 66
...
Accessories and Modif ications . 135
................................
Accessories . 135
.
Additional Safety Precautions . 136
............................
Modif ications . 136
ACCESSORY (Ignition Key .......................................
Position) . 73
...............
Accessory Power Socket . 92
Adding
................................
Brake Fluid . 178
...............................
Clutch Fluid . 178
..........................
Engine Coolant . 171
..................................
Engine Oil . 167
....
Manual Transmission Fluid . 177
........
Windshield Washer Fluid . 176
Additional Inf ormation About .......................
Your Seat Belts . 43
......................
Lap/Shoulder Belt . 43
...............
Seat Belt Maintenance . 45
..
Seat Belt System Components . 43
Additional Inf ormation About ...........................
Your Airbags . 46
...
Additional Safety Precautions . 51
How the Passenger Airbag
..........
Cutoff Indicator Works . 49 How Your Front Airbags
.........................................
Work . 46
....................
Airbag Components . 46
....................
Additives, Engine Oil . 168
Adjustments
..........................
Head Restraints . 82
.........................................
Mirrors . 88
.............................................
Seats . 81
...........................
Steering Wheel . 71
...............................
Airbag (SRS) . 9, 46
.....................
Air Cleaner Element . 179
................
Air Conditioning System . 96
..............................
Maintenance . 189
............................................
Usage . 96
.........................
Air Outlets (Vents) . 98
.......................
Air Pressure, Tires . 193
..................
High Speed Driving . 194
.........................
Normal Driving . 194
.......................
Alcohol in Gasoline . 254
......................................
Antif reeze . 171
Anti-thef t Steering Column
..............................................
Lock . 73
..........................
Appearance Care . 213
................................
Audio System . 104
Index
A B
I