2004 HONDA ODYSSEY cooling

When towing a trailer, you should
carry a f ull-size wheel and tire as a
spare in case you have a flat. If you
use the compact spare tire that came
with the vehicle, it may adversely
af f ect vehicle handling. See pagef or inf ormation on proper tire
size, and page f or inf ormation on
how to store a f ull-size tire. When
storing a f ull-size spare tire in the
trailer, f ollow the trailer maker’s
instructions.
Many states and Canadian provinces
require special outside mirrors when
towing a trailer. Even if they don’t,
you should install special mirrors if
you cannot clearly see behind you, or
if the trailer creates a blind spot.
Askyourtrailersalesorrental
agency if any other items are
recommended or required f or your
towing situation. When preparing to tow, and bef ore
driving away, be sure to check the
f ollowing:
You may want to fill the fuel tank
with premium f uel. Premium f uel
provides improved perf ormance. Your vehicle tires and spare are
properly inf lated (see page ),
and the trailer tires and spare are
inflated as recommended by the
trailer maker. The lights and brakes on your
vehicle and the trailer are working
properly. Allitemsonandinthetrailerare
properly secured and cannot shif t
while you drive.
Thehitch,safetychains,andany
other attachments are secure. All weights and loads are within
limits (see pages and ). The trailer has been properly
serviced and is in good condition. If you tow f requently, f ollow the
Severe Conditions maintenance
schedule. The vehicle has been properly
serviced, and the tires, brakes,
suspension, and cooling system
are in good operating condition.
244
233
194231
195
Towing a Trailer
Driving
Spare Vehicle T ire
Additional Trailer EquipmentPre-T ow Checklist
198

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.Always use Honda All Season
Antif reeze/Coolant Type 2. This
coolant is pre-mixed with 50 percent
antif reeze and 50 percent water.
Never add straight antifreeze or
plain water.
If Honda antif reeze/coolant is not
available, you may use another
major-brand non-silicate coolant as a
temporaryreplacement.Makesureit
is a high-quality coolant
recommended f or aluminum engines.
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.If the reserve tank is completely
empty, you should also check the
coolant level in the radiator.
Engine Coolant
Maint enance
A dding Engine Coolant
214
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.

When the radiator and engine are
cool, relieve any pressure in the
cooling system by turning the
radiator cap counterclockwise,
without pressing down.
Remove the radiator cap by
pushing down and turning
counterclockwise.The coolant level should be up to
the base of the f iller neck. Add
coolant if it is low.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.
Do not add any rust inhibitors or
other additives to your vehicle’s
cooling system. They may not be
compatible with the coolant or
engine components.
Pour the coolant slowly and caref ully
so you do not spill. Clean up any
spills immediately; it could damage
components in the engine
compartment. Put the radiator cap back on, and
tighten it fully.
3. 4.
5.
1.
2.
Engine Coolant
Maint enance215
RADIATOR CAP RESERVE TANK

If you use a non-Honda f loor mat,
make sure it f its properly and that it
canbeusedwiththefloormat
anchor. Do not put additional f loor
mats on top of the anchored mat.This f ilter removes the dust and
pollenthatisbroughtinfromthe
outside through the heating and
cooling system/climate control
system.
Have your Honda dealer replace this
f ilter every 30,000 miles (48,000 km)
under normal conditions. It should
be replaced every 15,000 miles
(24,000 km) if you drive primarily in
urban areas that have high
concentrations of soot in the air, or if
the airflow from the heating and
cooling system/climate control
system becomes less than usual.
Floor Mats, Audio Antenna, Dust and Pollen Filter
Maint enance
A udio A ntenna
Dust and Pollen Filter
227
NOTICE:Your vehicle is equipped
with an antenna on the f ront right
f ender. Bef ore using a ‘‘drive-
through’’ car wash, make sure you
remove the antenna by unscrewing it by
hand. This prevents the antenna f rom
being damaged by the car wash brushes.

If you need to park your vehicle f or
an extended period (more than one
month), there are several things you
should do to prepare it f or storage.
Proper preparation helps prevent
deterioration and makes it easier to
get your vehicle back on the road. If
possible, store your vehicle indoors.Fill the f uel tank.
Change the engine oil and f ilter.
Wash and dry the exterior
completely.
Cleantheinterior.Makesurethe
carpeting, floor mats, etc. are
completely dry.
Leave the parking brake off. Put
the transmission in Park. Block the rear wheels.
If the vehicle is to be stored f or a
longer period, it should be
supported on jackstands so the
tires are of f the ground.
Leave one window open slightly (if
the vehicle is being stored
indoors).
Disconnect the battery.
Support the f ront and rear wiper
blade arms with a f olded towel or
ragsotheydonottouchthe
windshield.
To minimize sticking, apply a
silicone spray lubricant to all door
and tailgate seals. Also, apply a
vehiclebodywaxtothepainted
surfaces that mate with the door
and tailgate seals.Cover the vehicle with a
‘‘breathable’’ cover, one made
f rom a porous material such as
cotton. Non-porous materials, such
as plastic sheeting, trap moisture,
which can damage the paint.
If possible, periodically run the
engine until it reaches f ull
operating temperature (the
cooling f ans cycle on and of f
twice). Pref erably, do this once a
month.
If you store your vehicle f or 1 year or
longer, have your Honda dealer
perf orm the inspections called f or in
the 2 years/30,000 miles (48,000 km)
maintenance schedule (Normal
Conditions) as soon as you take it
out of storage (see page ). The
replacements called f or in the
maintenance schedule are not
needed unless the vehicle has
actually reached that time or mileage. 205
Vehicle Storage
Maint enance236

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 (seeon page ).
If you don’t f ind an obvious leak,
check the coolant level in the
radiator reserve tank. Add coolant
if the level is below the MIN mark.
If there was no coolant in the
reserve tank, you may need 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 first stop. After the
pressure releases, push down on
the cap and turn it until it comes
off.
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. 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 (seeon page ).
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.
5.
6.
7.
8.9.
255
10.
11.255
Emergency
Towing
Emergency
Towing
If theEngineOverheats
T aking Care of t he Unexpect ed251
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.

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Circuits Protected
Circuits Protected
No. Amps. No. Amps.
Circuits Protected
Amps.
No.
Back Up, ACC
Power Seat
Heater Motor
Cooling Fan
Spare Fuse
Spare Fuse
Spare Fuse
Battery
Condenser Fan
MG Clutch
Ignition Switch (IG 1 Main)
ABS Motor
Spare Fuse
Spare Fuse
Right Headlight
ACG S
Hazard
Not Used
Stop
Lef t Headlight
ABS F/S
Power Window Motor
Power Sliding Door
Rear Defroster
1
2
3
4
5
6
7
8
9
10
11
12 20 A
30 A
15 A
15 A
15 A
20 A
15 A
20 A
40 A
30 A
30 A 13
14
15
16
17
18
19
20
21
22
23
2440 A
40 A
40 A
30 A
7.5 A 10 A
15 A
120 A 30 A
7.5 A 50 A
30 A
Rear Entertaiment System
Not Used
Seat Heaters
Driver’s Power Window
Rear A/C
Power Sliding Door
20 A
20 A
30 A
40 A
20 A
1
27 8
9
10
11 : EX and EX-L models
EX-L models
1:
EX and EX-L models
2:
1
1
2
Fuse Locations
T aking Care of t he Unexpect ed260
PRIMARY UNDER-HOOD FUSE BOX
SECONDARY UNDER-HOOD FUSE BOX

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No. Amps. Circuits ProtectedNo. Amps. Circuits Protected
1
2
3
4
5
6
7
8
9
10
11
12
13 15 A
10 A
7.5 A
7.5 A
7.5 A 15 A
15 A
7.5 A 10 A
7.5 A 10 A
30 A
7.5 A Fuel Pump
SRS
Heater Control, A/C Clutch
Relay, Cooling Fan Relay
Power Mirror
Daytime Running Light
ECU(PCM),CruiseControl
IG Coil
ACC Relay
Back-up Lights, Instrument
Lights
Turn Signals
Rear Wiper
Front Wiper
Starter Signal 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16 20 A
20 A
10 A
20 A
20 A
10 A
7.5 A 20 A
15 A
15 A
10 A
20 A
7.5 A
7.5 A 20 A
7.5 A Driver’s Side Automatic
Sliding Door
Power Seat Reclining
BSC
Power Seat Sliding
Passenger’s Side Automatic
Sliding Door
Daytime Running Light
Left Rear Window
Front Passenger’s Power
Window
ACC Socket
Inst. Panel Light, License
Light
Interior Light, Radio
Power Door Locks
Clock, Back Up
ABS Motor Check
Driver’s Power Window
Right Rear Window
EX and EX-L models
Canadian models
:
1:
2:
On Canadian models
1
1 1
2
Fuse Locations
T aking Care of t he Unexpect ed261
Driver’s Side INTERIOR FUSE BOX Passenger’s Side
Front Front