Press the master door lock switch in as shown to lock or unlock all doors.
Using the Master Door Lock Switch
When you lock/unlock either of the front doors using the master lock switch, all the other doors lock/ unlock at the same time.
Honda Civic Owners Manual. Defaulting All the Settings
Models with Display Audio
Reset all the menu and customized settings as the factory defaults.
Select .
Select Settings.
Select System.
Select the Others tab.
Select Factory Data Reset.
A confirmation message appears on the
screen.
Select Y ...