2003 HONDA S2000 radiator

Remove the radiator cap.
Pour coolant into the radiator up
to the base of the f iller neck and
into the reserve tank up to the
MAX mark.
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.
Install the radiator cap, and
tighten it fully.
If necessary, f ill the reserve tank
to the MAX mark. Install the
reserve tank cap.
15.
16.
17.
18.
19.
Cooling Syst em
Maint enance170

Run the air conditioning at least once
a week during the cold weather
months. Run it f or at least ten
minutes while you are driving at a
steady speed with the engine at
normal operating temperature. This
circulates the lubricating oil con-
tained in the ref rigerant.If the air conditioning does not get as
cold as before, have your dealer
check the system. Recharge the
system with Ref rigerant HFC-134a
(R-134a). (See Specif ications on page
.)
Your car’s air conditioning is a sealed
system. Any major maintenance,
such as recharging, should be done
by a qualif ied mechanic. You can do
a couple of things to make sure the
air conditioning works ef f iciently.
Periodically check the engine’s
radiator and air conditioning
condenser f or leaves, insects, and
dirt stuck to the f ront surf ace. These
block the air f low and reduce cooling
ef f iciency. Use a light spray f rom a
hose or a sof t brush to remove them. 251
A ir Condit ioning Syst em
Maint enance186
AIR CONDITIONING CONDENSER
Whenever you have the air conditioning
system serviced, make sure the service
f acility uses a ref rigerant recycling
system. This system captures the
ref rigerant f or reuse. Releasing
ref rigerant into the atmosphere can
damage the environment.
The condenser and radiator f ins bend
easily. Only use a low-pressure spray
or sof t-bristle brush to clean them.

Open the hood.
Remove the electrical connector
f rom the bulb by squeezing the
connector to unlock the tab, then
slide the connector of f the bulb.Remove the rubber weather seal
by pulling on the tab.
If you need to change the high
beam headlight bulb on the lef t
side, remove the coolant reserve
tank f rom its holder by pulling it
straight up. Unclip the end of the hold-down
wire f rom its slot. Pivot it out of
the way and remove the bulb
socket.Install the rubber seal over the
back of the headlight assembly.
Make sure it is right side up; it is
marked ‘‘TOP.’’ Insert the socket back into the
headlight assembly. Make sure
the bulb is installed correctly by
looking through the headlight lens.
The pins on the base of the bulb
should f it in the holes in the
headlight assembly. Pivot the hold-
down wire back in place and clip
the end into the slot.
Pull the bulb straight out of its
socket. Push the new bulb straight
into the socket until it bottoms. Push the electrical connector onto
the new bulb. Turn on the
headlights to test the new bulb.
(Lef t side)
Reinstall the radiator reserve tank.
1.
2. 3.
4.
5.6.
7.
8.
9.
Lights
Maint enance199

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 (see page
). If the level is below the
MIN mark, add coolant to halfway
between the MIN and MAX marks. 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
of f .
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 reading
reaches the middle of the
temperature gauge, or lower,
bef ore checking the radiator.
6.
7.9.
8.
245 124
Emergency
Towing
If Your Engine Overheats
T aking Care of t he Unexpect ed230
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.

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.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.
10.
12.
11.
245Emergency
Towing
If Your Engine Overheats
T aking Care of t he Unexpect ed231

CONT INUED
.........................
Low Fuel Indicator .48
...
Low Oil Pressure Indicator . 46,232
...
Lubricant Specif ications Chart . 250
.........................................
Luggage .128
..................
New Vehicle Break-in . 120
.....................
Normal Shif t Speeds .138
..................
NOTICE, Explanation of . ii
...............
Numbers, Identif ication . 248
..................................
Maintenance .147
...
Owner Maintenance Checks . 159
........................................
Record .157
....................................
Schedule .150
..
Maintenance Required Indicator . 51
.
Malf unction Indicator Lamp . 47,234
...................
Manual Transmission . 137
........
Manual Transmission Fluid . 172
...............................
Meters, Gauges .49
...................
Methanol in Gasoline . 255
..........................
Mirrors, Adjusting .80 ...
Octane Requirement, Gasoline . 120
.........................................
Odometer .50
...............................
Odometer, Trip .51
Oil ........................
Change, How to .163
......................
Change, When to .150
......................
Checking Engine .123
..............
Pressure Indicator . 46,232
Selecting Proper Viscosity ......................................
Chart .162
...........
ON (Ignition Key Position) . 61
.........................
Opening the Trunk .66
..
Operation in Foreign Countries . 256
..............................
Outside Mirrors .80
....................
Overheating, Engine .229
.........................
Oxygenated Fuels .255
..............................
Paint Touch-up .210
..............
Panel Brightness Control . 54
.................................
Parking Brake .81
.................................
Parking Lights .53
.............................
PGM-FI System .258 ..................
Polishing and Waxing . 209
Power ..................................
Door Locks .62
..............
Engine, Specif ications . 250
.........................................
Mirrors .80
......................................
Windows .70
.........
Pregnancy, Using Seat Belts . 17
............................
Protecting Adults .12
...
Additional Safety Precautions . 18
.....
Advice f or Pregnant Women . 17
........................
Protecting Children .18
.......
Protecting Larger Children . 29
.........
Protecting Small Children . 26
...................
Radiator Overheating . 229
.......................
Radio Sound System .94
...................
Readiness Codes . 235,260
..
Rear Lights, Bulb Replacement . 202
............................
Rear View Mirror .80
................
Reclining the Seat-backs . 69
.......
Recommended Shif t Speeds . 138
Index
M
N O
P
R
V