If the keyless remote battery or the vehicle battery is dead, use the key instead of the keyless remote.

Fully insert the key and turn it.
Locking/Unlocking the Doors Using a Key
When you lock the driver’s door with a key, all the other doors lock at the same time. When unlocking, the driver’s door unlocks first. Turn the key a second time within a few seconds to unlock the remaining doors.
Models with driver information interface
You can customize the door unlock mode setting.
Customized Features
Using the Remote Transmitter
Locking a Door Without Using a KeyHonda Civic Owners Manual. Replacing the Flat Tire
Remove the wheel nuts and flat tire.
Wipe the mounting surfaces of the wheel
with a clean cloth.
Mount the compact spare tire.
Screw the wheel nuts until they touch the
lips around the mounting holes, and stop
rotating.
Lower the vehicle and remove th ...