2003 HONDA CIVIC HATCHBACK radiator

These labels are in the locations
shown. They warn you of potential
hazards that could cause serious
injury. Read these labels caref ully.
If a label comes of f or becomes hard
to read, contact your Honda dealer
f or a replacement.
On cars without Side AirbagsOn cars with Side Airbags U.S. model only
U.S. model
Canadian model
Saf ety L abels
Driver and Passenger Saf ety 53
HOOD
SUN VISOR
RADIATOR CAP
DASHBOARD

Refer toon page f or inf ormation
on checking other items in your
Honda.
Look at the coolant level in the
radiator reserve tank. Make sure it is
between the MAX and MIN lines. If
it is below the MIN line, see
on page f or
informationonaddingtheproper
coolant.
Remove the dipstick again and
check the level. It should be
between the upper and lower
marks.
If it is near or below the lower mark,
see on page .
Insert it all the way back in its tube. 4.
3.
167171
165
Service Station Procedures
Bef ore Driving
Owner Maintenance
Checks A dding
Engine Coolant
A dding Oil
Engine Coolant Check
133
UPPER MARK
LOWER MARK MAX
RESERVE
TANK
MIN

µµ µ
µ µ
µ
Youshouldcheckthefollowing
items at the specif ied intervals. If
you are unsure of how to perf orm
any check, turn to the page given.
Engine oil level Check every
time you fill the fuel tank. See
page .
Engine coolant level Check the
radiator reserve tank every time
youfillthefueltank.Seepage .Tires Check the tire pressure
monthly. Examine the tread f or
wear and foreign objects. See page
.
Windshield washer f luid Check
the level in the reservoir monthly.
If weather conditions cause you to
use the washers f requently, check
the reservoir each time you stop
f or f uel. See page . Lights Check the operation of
the headlights, parking lights,
taillights, high-mount brake light,
turn signals, brake lights, and
license plate lights monthly. See
page .
Brakes Check the f luid level
monthly. See page . 132
133
176 177 193
200
Owner Maintenance Checks
Maint enance 165

Fluid Locations
Maint enance
166 ENGINE OIL
DIPSTICK
(Orange handle)
WASHER FLUID
(Blue cap)
ENGINE
COOLANT
RESERVOIR RADIATOR CAP BRAKE FLUID
(Gray cap)
CLUTCH FLUID
(Gray cap)
ENGINE OIL
FILL CAP

If the coolant level in the reserve
tank is at or below the MIN line, add
coolant to bring it up to the MAX line.
Inspect the cooling system f or leaks.
The coolant you add should always
be a mixture of 50 percent antif reeze
and 50 percent water. Never add
straight antif reeze or plain water.If the reserve tank is completely
empty, you should also check the
coolant level in the radiator.
Always use Honda All Season
Antif reeze/Coolant Type 2. This
coolant is pre-mixed with 50 percent
antif reeze and 50 percent water. It
does not require any additional
mixing.
If it is not available, you may use
another major-brand non-silicate
coolant as a temporary replacement.
Make sure it is a high-quality coolant
recommended f or aluminum engines.
However, continued use of any non-
Honda coolant can result in
corrosion, causing the cooling
system to malf unction or f ail. Have
the cooling system f lushed and
ref illed with Honda antif reeze/
coolant as soon as possible.
CONT INUED
A dding Engine Coolant
Cooling Syst em
Maint enance
171
RESERVE TANK
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.

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