Honda 2003 Civic Owner's Manual page 223

If the terminals are severely cor-
roded, clean them with baking soda
and water. Then use a wrench to
loosen and remove the cables from
the terminals. Always disconnect the
negative ( ) cable first and recon-
nect it last. Clean the battery termi-
nals with a terminal cleaning tool or
wire brush. Reconnect and tighten
the cables, then coat the terminals
with grease.
If you need to connect the battery to
a charger, disconnect both cables to
prevent damage to the car's
electrical system.
The battery gives off explosive
hydrogen gas during normal
operation.
A spark or flame can cause the
battery to explode with enough
force to kill or seriously hurt you.
Wear protective clothing and a
face shield, or have a skilled
mechanic do the battery
maintenance.
Charging the battery with the cables
connected can seriously damage your
car's electronic controls. Detach the
battery cables bef ore connecting the
battery to a charger.
Standard for LX and EX models in the
U.S., and LX and SPORT models in
Canada
Optional for Canadian DX model
If your car's battery is disconnected
or goes dead, the audio system will
disable itself. The next time you turn
on the radio you will see ''
in the frequency display. Use the
Preset buttons to enter the five-digit
).
code (see page
149
On all models
When the battery is disconnected,
the clock setting in the audio system
will be canceled. You will need to
reset the clock according to the
instructions of the audio system.
Maintenance
Battery
''
223