Honda Civic Owners Manual: Key Types and Functions

Locking and Unlocking the Doors

...

Keys

Use the key to start and stop the engine, to lock and unlock the doors and to open the trunk. You can also use the remote transmitter or smart entry system* to lock and unlock the doors and to ...

See also:

Honda Civic Service Manual. Rear Air Outlet Removal and Installation
8411A4 Removal 1. Rear Bumper 1. Remove the screws (A), the bolts (B), and the clips (C, D) securing the rear bumper (E). ...