Honda Civic Owners Manual: Driving Preparation

Before Driving

...

Exterior Checks

Make sure there are no obstructions on the windows, door mirrors, exterior lights, or other parts of the vehicle.  Remove any frost, snow, or ice.  Remove any snow on the roo ...

See also:

Honda Civic Owners Manual. Locking/Unlocking the Doors Using a Key
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 ...