Honda Civic 2 Door Owner's Manual page 88

Door Locks
4. Push and hold the rear of the
master door lock switch on the
driver's door. You will hear a
clicking sound, and after about 5
seconds, you will hear another
clicking sound.
5. Release the switch, and turn the
ignition switch to the LOCK (0)
position within 5 seconds.
84
Even though your vehicle's battery is
removed or goes dead, the system
keeps the auto door lock/unlock
setting which you selected.