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 Service Manual. Front Individual Map Light Removal, Installation, and Test (Without Moonroof)
Removal 1. Front Individual Map Light (without moonroof) 1. Turn the front individual map light switch OFF. 2. Carefully pry off the lenses (A) with ...