2003 HONDA ODYSSEY coolant

CONT INUED
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.
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.Turn the ignition ON (II). Turn
the heater temperature control
dial f ully clockwise or set the
climate control system to
90°F (32°C). Turn the ignition of f .
Openthehood.Makesurethe
engine and radiator are cool to the
touch.
Remove the radiator cap.Loosen the drain plug on the
bottom of the radiator. The
coolant will drain through the
splash guard. Drain the coolant
into an appropriate container.
1.
3.
2.
Replacing Engine Coolant
Cooling Syst em
Maint enance303
DRAIN PLUG
DRAIN BOLT

When the coolant stops draining,
tightenthedrainplugatthe
bottom of the radiator.
Tighten the drain bolt at the rear
of the engine cylinder block
securely.
Tightening torque:
Remove the reserve tank f rom its
holder by pulling it straight up.
Drain the coolant into an
appropriate container, then put the
tank back in its holder.
Install a rubber hose on the drain
bolt in the back of the engine
block. Loosen the drain bolt. Drain
the coolant into an appropriate
container. 6.
4. 5. 7.
Cooling Syst em
Maint enance304
RESERVE TANK RESERVE
TANK CAP
HOLDER
7 lbf·ft (10 N·m , 1.0 kgf·m)

Fill the reserve tank to the MAX
mark. Install the reserve tank cap.
Install the radiator cap, and
tighten it to the first stop.
Start the engine and let it run until
the radiator cooling f an comes on
at least twice. Then stop the
engine.
Remove the radiator cap. Fill the
radiator with coolant up to the
base of the f iller neck.
Install the radiator cap, and
tighten it fully.
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:
8. 10.
11.
12.
13.9.
Cooling Syst em
Maint enance305
FILLER NECK
Fill up to here
1.98 US gal (7.5, 1.65 Imp gal)

Remove the air cleaner housing
cover.
Remove the old air cleaner
element.
Caref ully clean the inside of the
air cleaner housing with a damp
rag.
The coolant lines inside the air
cleaner housing may be warm. Place the new air cleaner element
in the air cleaner housing.
Reinstall the air cleaner housing
cover, and tighten the four bolts.
Reinstall the air intake cover.
Reinstall the two pins and secure
thembypushingontheheads
until they lock.
3.
4.
6.
7.
5. 8.
Maint enance
A ir Cleaner Element
312
AIR CLEANER ELEMENT

Your vehicle can overheat for 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.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/
climate control system and all
otheraccessories.Turnonthe
hazard warning indicators.
If you see steam and/or spray
coming f rom under the hood, turn
of f the engine.
The pointer of your vehicle’s
temperature gauge should stay in
the midrange under most conditions.
Itmaygohigherif youaredrivingup
a long steep hill on a very hot day. If
it climbs to the red mark, you should
determine the reason.
1.
2.
If Your Engine Overheats
T aking Care of t he Unexpect ed366
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 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.
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 the
hood.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 ).
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 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.
3.
7. 6.
5. 4. 380
249 8.
CONT INUED
Emergency
Towing
If Your Engine Overheats
T aking Care of t he Unexpect ed367
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.

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 (climate control to
FULL AUTO at 90°F/32°C). 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.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 .)
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.
9.
10. 11.
12.
380
If Your Engine Overheats
T aking Care of t he Unexpect ed
Emergency
Towing
368

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Specif ications
T echnical Inf ormation386
Dimensions
Weights
Air Conditioning Capacities
201.2 in (5,110 mm)
75.6 in (1,920 mm)
5.3 US qt (5.0
, 4.4 Imp qt)
2.6 US qt (2.5
, 2.2 Imp qt)
Including the coolant in the reserve tank and that remaining in the
engine.
Reserve tank capacity:
0.16 US gal (0.6
, 0.13 Imp gal)
Excluding the oil remaining in the engine. 4.6 US qt (4.4
, 3.9 Imp qt)
4.2 US qt (4.0
, 3.5 Imp qt)
2.48 US gal (9.4
, 2.07 Imp gal)
3.5 US qt (3.3
, 2.9 Imp qt)
8.3 US qt (7.9, 7.0 Imp qt)
4.8 US qt (4.5
, 4.0 Imp qt)
HFC-134a (R-134a)
66.1 in (1,680 mm) 66.1 in (1,680 mm)
118.1 in (3,000 mm) 68.5 in (1,740 mm)
32 34 oz (850 900 g) ND-OIL8 20.00 US gal (75.7
, 16.65 Imp gal)
1.98 US gal (7.5, 1.65 Imp gal)
69.7 in (1,770 mm)
Length
Width
Height
Wheelbase
Track
Gross vehicle weight rating
Gross combined weight
rating (GCWR) See the tire information label atta-
ched to the driver’s doorjamb.
Refrigerant type
Charge quantity
Lubricant type Fuel tank
Engine
coolant
Engine oil
Automatic
transmission
fluid
Windshield
washer
reservoir
8,265 lbs (3,750 kg) Approx.
Front
Rear
1:
2:Change
Total
Change
Including
filter
Without
filter
Total
Change
Total
U.S. Vehicles
Canada Vehicles
1: LX
2: EX,EX-L1
2
1
2