Honda Civic Service Manual: Engine Cooling

Engine

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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. Voice Recognition
To achieve optimum voice recognition when using the voice control system: Make sure the correct screen is displayed for the voice command that you are using. Close the windows and moonroof*. Adjust the dashboard and side vents so air does not blow onto the microphone on the ceiling ...