HONDA 2007 Civic Sedan - Owner's Manual - Manual (Page 256)

On vehicles with navigation system
The navigation system will also
disable itself. The next time you turn
on the ignition switch, the system
will require you to enter a PIN
before it can be used. Refer to the
navigation system manual.
If you need to connect the battery to
a charger, disconnect both cables to
prevent damaging your vehicle’s
electrical system. Always disconnect
the negative ( ) cable first, and
reconnect it last. If your vehicle’s battery is
disconnected, or goes dead, the
audio system will disable itself. The
next time you turn on the radio, you
may see ‘‘ENTER CODE’’ in the
frequency display. Use the preset
buttons to enter the code (see page
). 168
Checking the Battery
Ma
int
e
na
nce
253
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
technician do the battery
maintenance.
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