Honda Civic Service Manual: Engine Cooling

Engine

...

Coolant Replacement (R18A9)

1. Radiator Cap 1. Wait until the engine is cool, then carefully remove the radiator cap. ...

See also:

Honda Civic Owners Manual. Adjusting the Front Head Restraints
Front head restraints are most effective for protection against whiplash and other rearimpact crash injuries when the center of the back of the occupant’s head rests against the center of the restraint. The tops of the occupant’s ears should be level with the center height of the restr ...