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. Engine Compartment Fuse Box
Located near the battery. Push the tabs to open the box. Fuse locations are shown on the fuse box cover. Locate the fuse in question by the fuse number and box cover number. Circuit protected and fuse rating *1:Models with the smart entry system have an ENGINE START/STOP button ...