Page 1 of 209

2005 S2000 Online Reference Owner's Manual
Use these links (and links throughout this manual) to navigate through\
this reference.
For a printed owner's manual, click on authorized manuals or go to www.h\
elminc.com. Contents
Introduction ........................................................................\
............................................................... i
A Few Words About Safety........................................................................\
........................................ ii
Your Vehicle at a Glance........................................................................\
........................................... 3
Driver and Passenger Safety ........................................................................\
.................................... 5
Seat belts, SRS, and child protection.
Instruments and Controls........................................................................\
........................................ 37
Indicators, gauges, dashboard, and steering column.
Features ........................................................................\
...................................................................... 73
Heating and Cooling, audio, steering wheel and cruise control
Before Driving........................................................................\
........................................................... 99
Fuel, vehicle break-in, and cargo loading.
Driving ........................................................................\
..................................................................... . 111
Engine and transmission operation.
Maintenance........................................................................\
............................................................. 121
Schedules, fluid checking, minor services, and vehicle storage.
Taking Care of the Unexpected........................................................................\
.............................. 157
Flat tire, dead battery, overheating, fuses.
Technical Information........................................................................\
............................................ . 181
Vehicle specifications, tires, fuels, and emissions controls.
Warranty and Customer Relations (U.S. and Canada)................................................................ 193
Warranty and contact information.
Authorized Manuals (U.S. only)........................................................................\
.............................. 197
How to order.
Index........................................................................\
........................................................................\
..... I
Service Information Summary
Fluid capacities and tire pressures.
Main controls
Owner's Identification Form
Page 159 of 209

This section covers the more
common problems that motorists
experience with their vehicles. It
gives you inf ormation about how to
safely evaluate the problem and what
to do to correct it. If the problem has
stranded you on the side of the road,
you may be able to get going again.
If not, you will also f ind instructions
on getting your vehicle towed.......................
Compact Spare Tire .158
....................
Changing a Flat Tire .159
.............
If the Engine Won’t Start . 164
................................
Jump Starting .166
..............
If the Engine Overheats . 167
.........
Low Oil Pressure Indicator . 170
..........
Charging System Indicator . 170
.......
Malf unction Indicator Lamp . 171
...............
Brake System Indicator . 172
.......
Closing the Convertible Top . 173
..............................................
Fuses .174
..........
Checking and Replacing . 175
..............................
Fuse Locations .177
......................
Emergency Towing .179
..........
If Your Vehicle Gets Stuck . 179
Taking Care of the Unexpected
T aking Care of t he Unexpect ed
157
Page 166 of 209

Diagnosing why the engine won’t
start f alls into two areas, depending
on what you hear when you press
the ENGINE START button.You hear nothing, or almost
nothing. The engine’s starter
motor does not operate at all, or
operates very slowly.
You can hear the starter motor
operating normally, or the starter
motor sounds like it is spinning
f aster than normal, but the engine
does not start up and run. When you press the ENGINE
START button, you do not hear the
normal noise of the engine trying to
start. You may hear a clicking sound
or series of clicks, or nothing at all.
Check these things:
Check the transmission interlock.
The clutch pedal must be pushed
all the way to the f loor or the
starter will not operate.
Turn the ignition switch to ON (II).
Turn on the headlights, and check
their brightness. If the headlights
areverydimordonotcomeonat
all, the battery is discharged. See on page . Press the ENGINE START button,
then release it. If the headlights do
not dim, check the condition of the
fuses.If thefusesareOK,thereis
probably something wrong with
the electrical circuit f or the
ignition switch or starter motor.
You will need a qualif ied
technician to determine the
problem. (See
on page .)
166 179
Nothing Happens or the Starter
Motor Operates Very Slowly
Jump Starting Emergency
Towing
If theEngineWon’tStart
164
Page 176 of 209
The vehicle’s f uses are contained in
threefuseboxes.
The interior f use box is underneath
the dashboard on the driver’s side.The primary under-hood f use box is
onthepassenger’ssidenexttothe
battery. To open it, push the two tabs
as shown.The auxiliary f use box is on the
driver’s side, near the brake f luid
reservoir. To open it, push the tab on
each side, and remove the lid.
Fuses
174
INTERIOR UNDER-HOOD
(PRIMARY)
UNDER-HOOD
(AUXILIARY)
Page 177 of 209
Check the smaller f uses in the
under-hood f use boxes and all the
fuses in the interior fuse box by
pulling out each one with the f use
puller provided in the primary
under-hood f use box.
Turn the ignition switch to LOCK
(0). Make sure the headlights and
all other accessories are off.
Remove the cover f rom the f use
box.
Check each of the large f uses in
the primary under-hood f use box
by looking through the top at the
wire inside. Removing these f uses
requires a Phillips-head
screwdriver.
If something electrical in your
vehicle stops working, check f or a
blown f use f irst. Determine f rom the
chart on pages and , or the
diagram on the f use box lid, which
f use or f uses control that device.
Check those f uses f irst, but check all
the f uses bef ore deciding that a
blown f use is the cause. Replace any
blown f uses, and check if the device
work.
1.
2.
3.4.
177 178
CONT INUED
Fuses
Checking and Replacing Fuses
T aking Care of t he Unexpect ed
175
BLOWN
Page 178 of 209

If you cannot drive the vehicle
without f ixing the problem, and you
do not have a spare fuse, take a fuse
of the same rating or a lower rating
f rom one of the other circuits. Make
sureyoucandowithoutthatcircuit
temporarily (such as the accessory
power socket or radio).
If you replace the blown f use with a
spare f use that has a lower rating, it
might blow out again. This does not
indicate anything wrong. Replace the
f use with one of the correct rating as
soon as you can.
Look f or a burned wire inside the
f use. If it is burned, replace it with
oneof thesparefusesof thesame
rating or lower.
If the radio f use is removed, the
audio system will disable itself . The
nexttimeyouturnontheradioyou
will see ‘‘Code’’ in the f requency
display. Use the preset buttons to
enter the f ive-digit code (see page).
If the replacement fuse of the
same rating blows in a short time,
there is probably a serious
electrical problem with your
vehicle. Leave the blown fuse in
that circuit, and have your vehicle
checked by a qualif ied mechanic.
6.
5.
94
Fuses
176
BLOWN
Replacing a f use with one that has a
higher rating greatly increases the
chances of damaging the electrical
system. If you do not have a
replacement f use with the proper rating
f or the circuit, install one with a lower
rating.
Page 179 of 209
µ
µµ
µ
µ
Î
Î
No. Amps.No. Amps. Circuits Protected
Circuits Protected
CONT INUED
1
2
3
4
5
6
7
8
9
10
11
12
13 7.5 A
15 A
10 A
20 A
7.5 A 15 A
7.5 A
15 A
7.5 A 15 A
10 A 14
15
16
17
18
19
20
21
22
23
24
25
26
2710 A
10 A
7.5 A
7.5 A 10 A
15 A
7.5 A
7.5 A
7.5 A 20 A
20 A Daytime Running Lights
Keyless Entry
Back-up
Interior Light
Small Lights
Radio
Starter Signal
Heater Control,
Cooling Fan Relay
Power Mirrors
Right Power Window
Lef t Power Window
Not used
Not used
Not used
Windshield Wiper,
Auto Stop Signal
Washer Motor
Not used
Not used
Accessory Socket
Windshield Wiper
Turn signal Light
ACG
Instrument Light, Backup
Lights
Ignition Coil
Engine Start
Fuel Pump, SRS
SRS
: Canadian Model
Fuse Locations
T aking Care of t he Unexpect ed
177
I IN NT TE
ER
RI IOOR R F
FUUS SEE B
BOOX X
Page 180 of 209
µ
µ
µ
µ
µ
µ
µµ
µ
µ
µ
No. Amps. No. Amps. Circuits Protected
No. Amps. Circuits Protected Circuits Protected
1
2
3
4
5
6
7
8
9
10
11
12
13 40 A
20 A
30 A
20 A
40 A
20 A 14
15
16
17
18
19
20
21
22
23
24
2520 A
15 A
10 A
20 A
15 A
20 A
20 A
30 A
100 A 40 A Magnetic Clutch Relay
Right Headlight
ACG S
Hazard Warning Lights
Cooling Fan
Not used
Stop
Lef t Headlight
ABS F/S
ABS Motor
Battery
IG1 Main
1
2
3
4
5 20 A
70 A
60 A Rear Window Defogger
Not used
Not used
EPS
Air Pump Lighting 1 Relay
Lighting 2 Relay
Horn Relay
Power Window Motor
Right Roof Motor
Not used
Backup ACC
Lef t Roof Motor
Heater Motor
Condenser Fan
Not used
Condenser Fan Relay
Cooling Fan Relay
Fuse Locations
178
(AUXILIARY FUSE BOX)
UNDER-HOOD FUSE BOXES
(PRIMARY FUSE BOX)